prevent assertion failure
[oweals/gnunet.git] / src / transport / plugin_transport_http_server.c
index 19fd632b8bc7d5b4cb4dbb2a92214b29855f2763..6a9c1b0baba318e9002aede5072a3ebdc1264ee8 100644 (file)
@@ -1,6 +1,6 @@
 /*
      This file is part of GNUnet
-     (C) 2002-2013 Christian Grothoff (and other contributing authors)
+     Copyright (C) 2002-2014, 2017 GNUnet e.V.
 
      GNUnet is free software; you can redistribute it and/or modify
      it under the terms of the GNU General Public License as published
 
      You should have received a copy of the GNU General Public License
      along with GNUnet; see the file COPYING.  If not, write to the
-     Free Software Foundation, Inc., 59 Temple Place - Suite 330,
-     Boston, MA 02111-1307, USA.
+     Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
+     Boston, MA 02110-1301, USA.
 */
 
 /**
  * @file transport/plugin_transport_http_server.c
  * @brief HTTP/S server transport plugin
  * @author Matthias Wachs
+ * @author David Barksdale
+ * @author Christian Grothoff
  */
 #include "platform.h"
 #include "gnunet_util_lib.h"
 #include "gnunet_statistics_service.h"
 #include "gnunet_transport_plugin.h"
-#include "gnunet_nat_lib.h"
+#include "gnunet_nat_service.h"
 #include "plugin_transport_http_common.h"
 #include <microhttpd.h>
+#include <regex.h>
 
 
 
 #define _SEND 1
 
 
-/**
- * Enable output for debbuging URL's of incoming requests
- */
-#define DEBUG_URL_PARSE GNUNET_NO
+#define LOG(kind,...) GNUNET_log_from (kind, "transport-" PLUGIN_NAME,__VA_ARGS__)
 
 
 /**
- * Encapsulation of all of the state of the plugin.
+ * Information we keep with MHD for an HTTP request.
  */
-struct Plugin;
-
-/**
- * Session handle for connections.
- */
-struct Session
+struct ServerRequest
 {
   /**
-   * Stored in a linked list.
+   * The session this server request belongs to
+   * Can be NULL, when session was disconnected and freed
    */
-  struct Session *next;
+  struct GNUNET_ATS_Session *session;
 
   /**
-   * Stored in a linked list.
+   * The MHD connection
    */
-  struct Session *prev;
+  struct MHD_Connection *mhd_conn;
 
   /**
-   * To whom are we talking to (set to our identity
-   * if we are still waiting for the welcome message)
+   * The MHD daemon
    */
-  struct GNUNET_PeerIdentity target;
+  struct MHD_Daemon *mhd_daemon;
 
   /**
-   * Pointer to the global plugin struct.
+   * Options requested by peer
    */
-  struct HTTP_Server_Plugin *plugin;
+  uint32_t options;
+#define OPTION_LONG_POLL 1 /* GET request wants long-poll semantics */
 
   /**
-   * next pointer for double linked list
+   * _RECV or _SEND
    */
-  struct HTTP_Message *msg_head;
+  int direction;
 
   /**
-   * previous pointer for double linked list
+   * For PUT requests: Is this the first or last callback with size 0
+   * For GET requests: Have we sent a message
    */
-  struct HTTP_Message *msg_tail;
+  int connected;
 
   /**
-   * Message stream tokenizer for incoming data
+   * Currently suspended
    */
-  struct GNUNET_SERVER_MessageStreamTokenizer *msg_tk;
+  bool suspended;
+
+};
+
 
+/**
+ * Wrapper to manage addresses
+ */
+struct HttpAddressWrapper
+{
   /**
-   * Client send handle
+   * Linked list next
    */
-  struct ServerConnection *server_recv;
+  struct HttpAddressWrapper *next;
 
   /**
-   * Client send handle
+   * Linked list previous
    */
-  struct ServerConnection *server_send;
+  struct HttpAddressWrapper *prev;
 
   /**
-   * Address
+   * An address we are using.
    */
-  void *addr;
+  struct HttpAddress *address;
 
   /**
-   * Address length
+   * Length of the address.
    */
   size_t addrlen;
+};
+
 
+/**
+ *  Message to send using http
+ */
+struct HTTP_Message
+{
   /**
-   * Unique HTTP/S connection tag for this connection
+   * next pointer for double linked list
    */
-  uint32_t tag;
+  struct HTTP_Message *next;
 
   /**
-   * ATS network type in NBO
+   * previous pointer for double linked list
    */
-  uint32_t ats_address_network_type;
+  struct HTTP_Message *prev;
 
   /**
-   * Was session given to transport service?
+   * buffer containing data to send
    */
-  int session_passed;
+  char *buf;
 
   /**
-   * Did we immediately end the session in disconnect_cb
+   * amount of data already sent
    */
-  int session_ended;
+  size_t pos;
 
   /**
-   * Are incoming connection established at the moment
+   * buffer length
    */
-  int connect_in_progress;
+  size_t size;
 
   /**
-   * Absolute time when to receive data again
-   * Used for receive throttling
+   * HTTP/S specific overhead
    */
-  struct GNUNET_TIME_Absolute next_receive;
+  size_t overhead;
 
   /**
-   * Session timeout task
+   * Continuation function to call once the transmission buffer
+   * has again space available.  NULL if there is no
+   * continuation to call.
+   */
+  GNUNET_TRANSPORT_TransmitContinuation transmit_cont;
+
+  /**
+   * Closure for transmit_cont.
    */
-  GNUNET_SCHEDULER_TaskIdentifier timeout_task;
+  void *transmit_cont_cls;
 };
 
 
-struct ServerConnection
+/**
+ * Session handle for connections.
+ */
+struct GNUNET_ATS_Session
 {
+
   /**
-   * _RECV or _SEND
+   * To whom are we talking to (set to our identity
+   * if we are still waiting for the welcome message)
    */
-  int direction;
+  struct GNUNET_PeerIdentity target;
 
   /**
-   * Should this connection get disconnected? GNUNET_YES/NO
+   * Pointer to the global plugin struct.
    */
-  int disconnect;
+  struct HTTP_Server_Plugin *plugin;
 
   /**
-   * For PUT connections: Is this the first or last callback with size 0
+   * next pointer for double linked list
    */
-  int connected;
+  struct HTTP_Message *msg_head;
 
   /**
-   * The session this server connection belongs to
+   * previous pointer for double linked list
    */
-  struct Session *session;
+  struct HTTP_Message *msg_tail;
 
   /**
-   * The MHD connection
+   * Message stream tokenizer for incoming data
    */
-  struct MHD_Connection *mhd_conn;
+  struct GNUNET_MessageStreamTokenizer *msg_tk;
 
   /**
-   * The MHD daemon
+   * Client recv handle
    */
-  struct MHD_Daemon *mhd_daemon;
-};
-
+  struct ServerRequest *server_recv;
 
-/**
- * Encapsulation of all of the state of the plugin.
- */
-struct HTTP_Server_Plugin
-{
   /**
-   * Our environment.
+   * Client send handle
    */
-  struct GNUNET_TRANSPORT_PluginEnvironment *env;
+  struct ServerRequest *server_send;
 
   /**
-   * Linked list head of open sessions.
+   * Address
    */
-  struct Session *head;
+  struct GNUNET_HELLO_Address *address;
 
   /**
-   * Linked list tail of open sessions.
+   * Absolute time when to receive data again
+   * Used for receive throttling
    */
-  struct Session *tail;
+  struct GNUNET_TIME_Absolute next_receive;
 
   /**
-   * Plugin name
+   * Absolute time when this connection will time out.
    */
-  char *name;
+  struct GNUNET_TIME_Absolute timeout;
 
   /**
-   * Protocol
+   * Session timeout task
    */
-  char *protocol;
+  struct GNUNET_SCHEDULER_Task * timeout_task;
 
   /**
-   * My options to be included in the address
+   * Task to resume MHD handling when receiving is allowed again
    */
-  uint32_t options;
+  struct GNUNET_SCHEDULER_Task * recv_wakeup_task;
 
   /**
-   * External address
+   * Number of bytes waiting for transmission to this peer.
    */
-  char *external_hostname;
+  unsigned long long bytes_in_queue;
 
   /**
-   * Verify external address
+   * Number of messages waiting for transmission to this peer.
    */
-  int verify_external_hostname;
+  unsigned int msgs_in_queue;
 
   /**
-   * Maximum number of sockets the plugin can use
-   * Each http inbound /outbound connections are two connections
+   * Unique HTTP/S connection tag for this connection
    */
-  unsigned int max_connections;
+  uint32_t tag;
 
   /**
-   * Current number of sockets the plugin can use
-   * Each http inbound /outbound connections are two connections
+   * ATS network type.
    */
-  unsigned int cur_connections;
+  enum GNUNET_ATS_Network_Type scope;
 
   /**
-   * Did we immediately end the session in disconnect_cb
+   * #GNUNET_YES if this session is known to the service.
    */
-  int in_shutdown;
+  int known_to_service;
 
+};
+
+
+/**
+ * Encapsulation of all of the state of the plugin.
+ */
+struct HTTP_Server_Plugin
+{
   /**
-   * Length of peer id
+   * Our environment.
    */
-  int peer_id_length;
+  struct GNUNET_TRANSPORT_PluginEnvironment *env;
 
   /**
-   * External hostname the plugin can be connected to, can be different to
-   * the host's FQDN, used e.g. for reverse proxying
+   * Hash map of open sessions.
    */
-  struct HttpAddress *ext_addr;
+  struct GNUNET_CONTAINER_MultiPeerMap *sessions;
 
   /**
-   * Notify transport only about external address
+   * Function to call about session status changes.
    */
-  unsigned int external_only;
+  GNUNET_TRANSPORT_SessionInfoCallback sic;
 
   /**
-   * External address length
+   * Closure for @e sic.
    */
-  size_t ext_addr_len;
+  void *sic_cls;
 
   /**
-   * use IPv6
+   * Plugin name
    */
-  uint16_t use_ipv6;
+  char *name;
 
   /**
-   * use IPv4
+   * Protocol
    */
-  uint16_t use_ipv4;
+  char *protocol;
 
   /**
-   * Port used
+   * External address
    */
-  uint16_t port;
+  char *external_hostname;
 
   /**
-   * Task calling transport service about external address
+   * External hostname the plugin can be connected to, can be different to
+   * the host's FQDN, used e.g. for reverse proxying
    */
-  GNUNET_SCHEDULER_TaskIdentifier notify_ext_task;
+  struct GNUNET_HELLO_Address *ext_addr;
 
   /**
    * NAT handle & address management
    */
   struct GNUNET_NAT_Handle *nat;
 
-  /**
-   * List of own addresses
-   */
-
   /**
    * IPv4 addresses DLL head
    */
@@ -324,26 +343,6 @@ struct HTTP_Server_Plugin
    */
   struct sockaddr_in6 *server_addr_v6;
 
-  /**
-   * MHD IPv4 task
-   */
-  GNUNET_SCHEDULER_TaskIdentifier server_v4_task;
-
-  /**
-   * MHD IPv6 task
-   */
-  GNUNET_SCHEDULER_TaskIdentifier server_v6_task;
-
-  /**
-   * The IPv4 server is scheduled to run asap
-   */
-  int server_v4_immediately;
-
-  /**
-   * The IPv6 server is scheduled to run asap
-   */
-  int server_v6_immediately;
-
   /**
    * MHD IPv4 daemon
    */
@@ -377,105 +376,268 @@ struct HTTP_Server_Plugin
   char *cert;
 #endif
 
-};
+  /**
+   * MHD IPv4 task
+   */
+  struct GNUNET_SCHEDULER_Task *server_v4_task;
 
+  /**
+   * MHD IPv6 task
+   */
+  struct GNUNET_SCHEDULER_Task *server_v6_task;
 
-/**
- * Wrapper to manage addresses
- */
-struct HttpAddressWrapper
-{
   /**
-   * Linked list next
+   * Task calling transport service about external address
    */
-  struct HttpAddressWrapper *next;
+  struct GNUNET_SCHEDULER_Task *notify_ext_task;
 
   /**
-   * Linked list previous
+   * Notify transport only about external address
    */
-  struct HttpAddressWrapper *prev;
+  unsigned int external_only;
 
-  struct HttpAddress *address;
+  /**
+   * The IPv4 server is scheduled to run asap
+   */
+  int server_v4_immediately;
 
-  size_t addrlen;
-};
+  /**
+   * The IPv6 server is scheduled to run asap
+   */
+  int server_v6_immediately;
 
+  /**
+   * Verify external address
+   */
+  int verify_external_hostname;
 
-/**
- *  Message to send using http
- */
-struct HTTP_Message
-{
   /**
-   * next pointer for double linked list
+   * Maximum number of sockets the plugin can use
+   * Each http request /request connections are two connections
    */
-  struct HTTP_Message *next;
+  unsigned int max_request;
 
   /**
-   * previous pointer for double linked list
+   * Current number of sockets the plugin can use
+   * Each http connection are two requests
    */
-  struct HTTP_Message *prev;
+  unsigned int cur_request;
 
   /**
-   * buffer containing data to send
+   * Did we immediately end the session in disconnect_cb
    */
-  char *buf;
+  int in_shutdown;
 
   /**
-   * amount of data already sent
+   * Length of peer id
    */
-  size_t pos;
+  int peer_id_length;
 
   /**
-   * buffer length
+   * My options to be included in the address
    */
-  size_t size;
+  uint32_t options;
 
   /**
-   * HTTP/S specific overhead
+   * use IPv6
    */
-  size_t overhead;
+  uint16_t use_ipv6;
 
   /**
-   * Continuation function to call once the transmission buffer
-   * has again space available.  NULL if there is no
-   * continuation to call.
+   * use IPv4
    */
-  GNUNET_TRANSPORT_TransmitContinuation transmit_cont;
+  uint16_t use_ipv4;
 
   /**
-   * Closure for transmit_cont.
+   * Port used
    */
-  void *transmit_cont_cls;
+  uint16_t port;
+
+  /**
+   * Regex for parsing URLs. FIXME: this seems overkill.
+   */
+  regex_t url_regex;
+
 };
 
 
 /**
- * Start session timeout for session s
- * @param s the session
+ * If a session monitor is attached, notify it about the new
+ * session state.
+ *
+ * @param plugin our plugin
+ * @param session session that changed state
+ * @param state new state of the session
  */
 static void
-server_start_session_timeout (struct Session *s);
+notify_session_monitor (struct HTTP_Server_Plugin *plugin,
+                        struct GNUNET_ATS_Session *session,
+                        enum GNUNET_TRANSPORT_SessionState state)
+{
+  struct GNUNET_TRANSPORT_SessionInfo info;
+
+  if (NULL == plugin->sic)
+    return;
+  memset (&info, 0, sizeof (info));
+  info.state = state;
+  info.is_inbound = GNUNET_YES;
+  info.num_msg_pending = session->msgs_in_queue;
+  info.num_bytes_pending = session->bytes_in_queue;
+  info.receive_delay = session->next_receive;
+  info.session_timeout = session->timeout;
+  info.address = session->address;
+  plugin->sic (plugin->sic_cls,
+               session,
+               &info);
+}
 
 
 /**
- * Increment session timeout due to activity for session s
- * @param s the session
+ * Wake up an MHD connection which was suspended
+ *
+ * @param cls the session
  */
 static void
-server_reschedule_session_timeout (struct Session *s);
+server_wake_up (void *cls)
+{
+  struct GNUNET_ATS_Session *s = cls;
+
+  s->recv_wakeup_task = NULL;
+  LOG (GNUNET_ERROR_TYPE_DEBUG,
+       "Session %p: Waking up PUT handle\n",
+       s);
+  GNUNET_assert (s->server_recv->suspended);
+  MHD_resume_connection (s->server_recv->mhd_conn);
+  s->server_recv->suspended = false;
+}
 
 
 /**
- * Cancel timeout for session s
- * @param s the session
+ * Reschedule the execution of both IPv4 and IPv6 server.
+ *
+ * @param plugin the plugin
+ * @param server which server to schedule v4 or v6?
+ * @param now #GNUNET_YES to schedule execution immediately, #GNUNET_NO to wait
+ * until timeout
+ */
+static void
+server_reschedule (struct HTTP_Server_Plugin *plugin,
+                   struct MHD_Daemon *server,
+                   int now);
+
+
+/**
+ * Deletes the session.  Must not be used afterwards.
+ *
+ * @param s the session to delete
  */
 static void
-server_stop_session_timeout (struct Session *s);
+server_delete_session (struct GNUNET_ATS_Session *s)
+{
+  struct HTTP_Server_Plugin *plugin = s->plugin;
+  struct HTTP_Message *msg;
+
+  if (NULL != s->timeout_task)
+  {
+    GNUNET_SCHEDULER_cancel (s->timeout_task);
+    s->timeout_task = NULL;
+    s->timeout = GNUNET_TIME_UNIT_ZERO_ABS;
+  }
+  if (NULL != s->recv_wakeup_task)
+  {
+    GNUNET_SCHEDULER_cancel (s->recv_wakeup_task);
+    s->recv_wakeup_task = NULL;
+    if (NULL != s->server_recv)
+    {
+      GNUNET_assert (s->server_recv->suspended);
+      s->server_recv->suspended = false;
+      MHD_resume_connection (s->server_recv->mhd_conn);
+    }
+  }
+  GNUNET_assert (GNUNET_OK ==
+                 GNUNET_CONTAINER_multipeermap_remove (plugin->sessions,
+                                                       &s->target,
+                                                       s));
+  while (NULL != (msg = s->msg_head))
+  {
+    GNUNET_CONTAINER_DLL_remove (s->msg_head,
+                                 s->msg_tail,
+                                 msg);
+    if (NULL != msg->transmit_cont)
+      msg->transmit_cont (msg->transmit_cont_cls,
+                          &s->target,
+                          GNUNET_SYSERR,
+                          msg->size,
+                          msg->pos + msg->overhead);
+    GNUNET_assert (s->msgs_in_queue > 0);
+    s->msgs_in_queue--;
+    GNUNET_assert (s->bytes_in_queue >= msg->size);
+    s->bytes_in_queue -= msg->size;
+    GNUNET_free (msg);
+  }
+
+  GNUNET_assert (0 == s->msgs_in_queue);
+  GNUNET_assert (0 == s->bytes_in_queue);
+
+  if (NULL != s->server_send)
+  {
+    LOG (GNUNET_ERROR_TYPE_DEBUG,
+         "Server: %p / %p Terminating inbound PUT session to peer `%s'\n",
+         s, s->server_send,
+         GNUNET_i2s (&s->target));
+    s->server_send->session = NULL;
+    MHD_set_connection_option (s->server_send->mhd_conn,
+                               MHD_CONNECTION_OPTION_TIMEOUT,
+                               1 /* 0 = no timeout, so this is MIN */);
+    if (s->server_send->suspended)
+    {
+      s->server_send->suspended = false;
+      MHD_resume_connection (s->server_send->mhd_conn);
+    }
+    server_reschedule (plugin,
+                      s->server_send->mhd_daemon,
+                      GNUNET_YES);
+  }
+
+  if (NULL != s->server_recv)
+  {
+    LOG (GNUNET_ERROR_TYPE_DEBUG,
+         "Server: %p / %p Terminating inbound GET session to peer `%s'\n",
+         s, s->server_recv, GNUNET_i2s (&s->target));
+    s->server_recv->session = NULL;
+    MHD_set_connection_option (s->server_recv->mhd_conn,
+                               MHD_CONNECTION_OPTION_TIMEOUT,
+                               1 /* 0 = no timeout, so this is MIN */);
+    server_reschedule (plugin,
+                      s->server_recv->mhd_daemon,
+                      GNUNET_YES);
+  }
+  notify_session_monitor (plugin,
+                          s,
+                          GNUNET_TRANSPORT_SS_DONE);
+  if (GNUNET_YES == s->known_to_service)
+  {
+    plugin->env->session_end (plugin->env->cls,
+                              s->address,
+                              s);
+    s->known_to_service = GNUNET_NO;
+  }
+  if (NULL != s->msg_tk)
+  {
+    GNUNET_MST_destroy (s->msg_tk);
+    s->msg_tk = NULL;
+  }
+  GNUNET_HELLO_address_free (s->address);
+  LOG (GNUNET_ERROR_TYPE_DEBUG,
+       "Session %p destroyed\n",
+       s);
+  GNUNET_free (s);
+}
 
 
 /**
- * Disconnect session @a s
+ * Disconnect session @a s by telling MHD to close the
+ * connections (reducing timeout, etc.).
  *
  * @param cls closure with the `struct HTTP_Server_Plugin`
  * @param s the session
@@ -483,31 +645,58 @@ server_stop_session_timeout (struct Session *s);
  */
 static int
 http_server_plugin_disconnect_session (void *cls,
-                                       struct Session *s);
+                                       struct GNUNET_ATS_Session *s)
+{
+  server_delete_session (s);
+  return GNUNET_OK;
+}
 
 
 /**
- * Does session s exist?
+ * Session was idle, so disconnect it
  *
- * @param plugin the plugin handle
- * @param s the session
- * @return #GNUNET_YES on success, #GNUNET_NO on error
+ * @param cls the session
  */
-static int
-server_exist_session (struct HTTP_Server_Plugin *plugin, struct Session *s);
+static void
+server_session_timeout (void *cls)
+{
+  struct GNUNET_ATS_Session *s = cls;
+  struct GNUNET_TIME_Relative left;
+
+  s->timeout_task = NULL;
+  left = GNUNET_TIME_absolute_get_remaining (s->timeout);
+  if (0 != left.rel_value_us)
+  {
+    /* not actually our turn yet, but let's at least update
+       the monitor, it may think we're about to die ... */
+    notify_session_monitor (s->plugin,
+                            s,
+                            GNUNET_TRANSPORT_SS_UP);
+    s->timeout_task = GNUNET_SCHEDULER_add_delayed (left,
+                                                    &server_session_timeout,
+                                                    s);
+    return;
+  }
+  GNUNET_log (TIMEOUT_LOG,
+              "Session %p was idle for %s, disconnecting\n",
+              s,
+             GNUNET_STRINGS_relative_time_to_string (HTTP_SERVER_SESSION_TIMEOUT,
+                                                     GNUNET_YES));
+  server_delete_session (s);
+}
 
 
 /**
- * Reschedule the execution of both IPv4 and IPv6 server
- * @param plugin the plugin
- * @param server which server to schedule v4 or v6?
- * @param now #GNUNET_YES to schedule execution immediately, #GNUNET_NO to wait
- * until timeout
+ * Increment session timeout due to activity session @a s
+ *
+ * @param s the session
  */
 static void
-server_reschedule (struct HTTP_Server_Plugin *plugin,
-                   struct MHD_Daemon *server,
-                   int now);
+server_reschedule_session_timeout (struct GNUNET_ATS_Session *s)
+{
+ GNUNET_assert (NULL != s->timeout_task);
+  s->timeout = GNUNET_TIME_relative_to_absolute (GNUNET_CONSTANTS_IDLE_CONNECTION_TIMEOUT);
+}
 
 
 /**
@@ -539,48 +728,25 @@ server_reschedule (struct HTTP_Server_Plugin *plugin,
  */
 static ssize_t
 http_server_plugin_send (void *cls,
-                  struct Session *session,
-                  const char *msgbuf, size_t msgbuf_size,
-                  unsigned int priority,
-                  struct GNUNET_TIME_Relative to,
-                  GNUNET_TRANSPORT_TransmitContinuation cont, void *cont_cls)
+                         struct GNUNET_ATS_Session *session,
+                         const char *msgbuf,
+                         size_t msgbuf_size,
+                         unsigned int priority,
+                         struct GNUNET_TIME_Relative to,
+                         GNUNET_TRANSPORT_TransmitContinuation cont,
+                         void *cont_cls)
 {
   struct HTTP_Server_Plugin *plugin = cls;
   struct HTTP_Message *msg;
-  int bytes_sent = 0;
+  ssize_t bytes_sent = 0;
   char *stat_txt;
 
-  GNUNET_assert (plugin != NULL);
-  GNUNET_assert (session != NULL);
-
-  if (GNUNET_NO == server_exist_session (plugin, session))
-  {
-      GNUNET_break (0);
-      return GNUNET_SYSERR;
-  }
-  if (NULL == session->server_send)
-  {
-     if (GNUNET_NO == session->connect_in_progress)
-     {
-      GNUNET_log_from (GNUNET_ERROR_TYPE_ERROR, session->plugin->name,
-                       "Session %p/connection %p: Sending message with %u bytes to peer `%s' with FAILED\n",
-                       session, session->server_send,
-                       msgbuf_size, GNUNET_i2s (&session->target));
-      GNUNET_break (0);
-      return GNUNET_SYSERR;
-     }
-  }
-  else
-  {
-    if (GNUNET_YES == session->server_send->disconnect)
-      return GNUNET_SYSERR;
-  }
-
-
-  GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, session->plugin->name,
-                   "Session %p/connection %p: Sending message with %u to peer `%s' with \n",
-                   session, session->server_send,
-                   msgbuf_size, GNUNET_i2s (&session->target));
+  LOG (GNUNET_ERROR_TYPE_DEBUG,
+       "Session %p/request %p: Sending message with %u to peer `%s'\n",
+       session,
+       session->server_send,
+       msgbuf_size,
+       GNUNET_i2s (&session->target));
 
   /* create new message and schedule */
   bytes_sent = sizeof (struct HTTP_Message) + msgbuf_size;
@@ -591,26 +757,88 @@ http_server_plugin_send (void *cls,
   msg->buf = (char *) &msg[1];
   msg->transmit_cont = cont;
   msg->transmit_cont_cls = cont_cls;
-  memcpy (msg->buf, msgbuf, msgbuf_size);
-
-  GNUNET_CONTAINER_DLL_insert_tail (session->msg_head, session->msg_tail, msg);
-
-  GNUNET_asprintf (&stat_txt, "# bytes currently in %s_server buffers", plugin->protocol);
+  GNUNET_memcpy (msg->buf,
+          msgbuf,
+          msgbuf_size);
+  GNUNET_CONTAINER_DLL_insert_tail (session->msg_head,
+                                    session->msg_tail,
+                                    msg);
+  session->msgs_in_queue++;
+  session->bytes_in_queue += msg->size;
+  notify_session_monitor (plugin,
+                          session,
+                          GNUNET_TRANSPORT_SS_UP);
+  GNUNET_asprintf (&stat_txt,
+                   "# bytes currently in %s_server buffers",
+                   plugin->protocol);
   GNUNET_STATISTICS_update (plugin->env->stats,
                             stat_txt, msgbuf_size, GNUNET_NO);
   GNUNET_free (stat_txt);
 
   if (NULL != session->server_send)
   {
+    if (session->server_send->suspended)
+    {
+      MHD_resume_connection (session->server_send->mhd_conn);
+      session->server_send->suspended = false;
+    }
     server_reschedule (session->plugin,
                        session->server_send->mhd_daemon,
                        GNUNET_YES);
-    server_reschedule_session_timeout (session);
   }
   return bytes_sent;
 }
 
 
+/**
+ * Terminate session during shutdown.
+ *
+ * @param cls the `struct HTTP_Server_Plugin *`
+ * @param peer for which this is a session
+ * @param value the `struct GNUNET_ATS_Session` to clean up
+ * @return #GNUNET_OK (continue to iterate)
+ */
+static int
+destroy_session_shutdown_cb (void *cls,
+                            const struct GNUNET_PeerIdentity *peer,
+                            void *value)
+{
+  struct GNUNET_ATS_Session *s = value;
+  struct ServerRequest *sc_send;
+  struct ServerRequest *sc_recv;
+
+  sc_send = s->server_send;
+  sc_recv = s->server_recv;
+  server_delete_session (s);
+  if (NULL != sc_send)
+    sc_send->session = NULL;
+  if (NULL != sc_recv)
+    sc_recv->session = NULL;
+
+  return GNUNET_OK;
+}
+
+
+/**
+ * Terminate session.
+ *
+ * @param cls the `struct HTTP_Server_Plugin *`
+ * @param peer for which this is a session
+ * @param value the `struct GNUNET_ATS_Session` to clean up
+ * @return #GNUNET_OK (continue to iterate)
+ */
+static int
+destroy_session_cb (void *cls,
+                    const struct GNUNET_PeerIdentity *peer,
+                    void *value)
+{
+  struct GNUNET_ATS_Session *s = value;
+
+  server_delete_session (s);
+  return GNUNET_OK;
+}
+
+
 /**
  * Function that can be used to force the plugin to disconnect
  * from the given peer and cancel all previous transmissions
@@ -624,24 +852,14 @@ http_server_plugin_disconnect_peer (void *cls,
                                     const struct GNUNET_PeerIdentity *target)
 {
   struct HTTP_Server_Plugin *plugin = cls;
-  struct Session *next;
-  struct Session *pos;
 
-  GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, plugin->name,
-                   "Transport tells me to disconnect `%s'\n",
-                   GNUNET_i2s (target));
-  next = plugin->head;
-  while (NULL != (pos = next))
-  {
-    next = pos->next;
-    if (0 == memcmp (target, &pos->target, sizeof (struct GNUNET_PeerIdentity)))
-    {
-      GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, plugin->name,
-                       "Disconnecting session %p to `%s'\n",
-                       pos, GNUNET_i2s (target));
-      http_server_plugin_disconnect_session (plugin, pos);
-    }
-  }
+  LOG (GNUNET_ERROR_TYPE_DEBUG,
+       "Transport tells me to disconnect `%s'\n",
+       GNUNET_i2s (target));
+  GNUNET_CONTAINER_multipeermap_get_multiple (plugin->sessions,
+                                              target,
+                                              &destroy_session_cb,
+                                              plugin);
 }
 
 
@@ -669,8 +887,8 @@ http_server_plugin_address_suggested (void *cls,
 
   if ((NULL != plugin->ext_addr) &&
       GNUNET_YES == (http_common_cmp_addresses (addr, addrlen,
-                                                plugin->ext_addr,
-                                                plugin->ext_addr_len)))
+                                                plugin->ext_addr->address,
+                                                plugin->ext_addr->address_length)))
   {
     /* Checking HTTP_OPTIONS_VERIFY_CERTIFICATE option for external hostname */
     if ((ntohl (haddr->options) & HTTP_OPTIONS_VERIFY_CERTIFICATE) !=
@@ -694,15 +912,15 @@ http_server_plugin_address_suggested (void *cls,
 
 /**
  * Creates a new outbound session the transport
- * service will use to send data to the peer
+ * service will use to send data to the peer.
  *
- * Since HTTP/S server cannot create sessions, always return NULL
+ * Since HTTP/S server cannot create sessions, always returns NULL.
  *
  * @param cls the plugin
  * @param address the address
  * @return always NULL
  */
-static struct Session *
+static struct GNUNET_ATS_Session *
 http_server_plugin_get_session (void *cls,
                                 const struct GNUNET_HELLO_Address *address)
 {
@@ -711,85 +929,148 @@ http_server_plugin_get_session (void *cls,
 
 
 /**
- * Deleting the session
- * Must not be used afterwards
+ * Call MHD IPv4 to process pending requests and then go back
+ * and schedule the next run.
  *
- * @param cls closure with the `struct HTTP_ServerPlugin`
- * @param s the session to delete
- * @return #GNUNET_OK on success
+ * @param cls plugin as closure
  */
-static int
-server_delete_session (void *cls,
-                       struct Session *s)
+static void
+server_v4_run (void *cls)
 {
   struct HTTP_Server_Plugin *plugin = cls;
-  struct HTTP_Message *msg;
-  struct HTTP_Message *tmp;
 
-  server_stop_session_timeout(s);
-  GNUNET_CONTAINER_DLL_remove (plugin->head, plugin->tail, s);
-  msg = s->msg_head;
-  while (NULL != msg)
-  {
-    tmp = msg->next;
-    GNUNET_CONTAINER_DLL_remove (s->msg_head, s->msg_tail, msg);
-    if (NULL != msg->transmit_cont)
-      msg->transmit_cont (msg->transmit_cont_cls, &s->target, GNUNET_SYSERR,
-                          msg->size, msg->pos + msg->overhead);
-    GNUNET_free (msg);
-    msg = tmp;
-  }
-  if (NULL != s->msg_tk)
-  {
-    GNUNET_SERVER_mst_destroy (s->msg_tk);
-    s->msg_tk = NULL;
-  }
-  GNUNET_free (s->addr);
-  GNUNET_free_non_null (s->server_recv);
-  GNUNET_free_non_null (s->server_send);
-  GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG,
-                   plugin->name,
-                   "Session %p destroyed\n", s);
-  GNUNET_free (s);
-  return GNUNET_OK;
+  plugin->server_v4_task = NULL;
+  plugin->server_v4_immediately = GNUNET_NO;
+  GNUNET_assert (MHD_YES == MHD_run (plugin->server_v4));
+  server_reschedule (plugin, plugin->server_v4, GNUNET_NO);
 }
 
 
 /**
-* Cancel timeout for session s
-*
-* @param s the session
-*/
+ * Call MHD IPv6 to process pending requests and then go back
+ * and schedule the next run.
+ *
+ * @param cls plugin as closure
+ */
 static void
-server_stop_session_timeout (struct Session *s)
+server_v6_run (void *cls)
 {
- GNUNET_assert (NULL != s);
-
- if (GNUNET_SCHEDULER_NO_TASK != s->timeout_task)
- {
-   GNUNET_SCHEDULER_cancel (s->timeout_task);
-   s->timeout_task = GNUNET_SCHEDULER_NO_TASK;
-   GNUNET_log (TIMEOUT_LOG, "Timeout stopped for session %p\n", s);
- }
+  struct HTTP_Server_Plugin *plugin = cls;
+
+  plugin->server_v6_task = NULL;
+  plugin->server_v6_immediately = GNUNET_NO;
+  GNUNET_assert (MHD_YES == MHD_run (plugin->server_v6));
+  server_reschedule (plugin, plugin->server_v6, GNUNET_NO);
 }
 
 
 /**
  * Function that queries MHD's select sets and
  * starts the task waiting for them.
+ *
  * @param plugin plugin
  * @param daemon_handle the MHD daemon handle
- * @param now schedule immediately
- * @return task identifier
+ * @param now schedule now
+ * @return gnunet task identifier
  */
-static GNUNET_SCHEDULER_TaskIdentifier
+static struct GNUNET_SCHEDULER_Task *
 server_schedule (struct HTTP_Server_Plugin *plugin,
                  struct MHD_Daemon *daemon_handle,
-                 int now);
+                 int now)
+{
+  struct GNUNET_SCHEDULER_Task * ret;
+  fd_set rs;
+  fd_set ws;
+  fd_set es;
+  struct GNUNET_NETWORK_FDSet *wrs;
+  struct GNUNET_NETWORK_FDSet *wws;
+  int max;
+  MHD_UNSIGNED_LONG_LONG timeout;
+  static unsigned long long last_timeout = 0;
+  int haveto;
+  struct GNUNET_TIME_Relative tv;
+
+  if (GNUNET_YES == plugin->in_shutdown)
+    return NULL;
+
+  ret = NULL;
+  FD_ZERO (&rs);
+  FD_ZERO (&ws);
+  FD_ZERO (&es);
+  wrs = GNUNET_NETWORK_fdset_create ();
+  wws = GNUNET_NETWORK_fdset_create ();
+  max = -1;
+  GNUNET_assert (MHD_YES ==
+                 MHD_get_fdset (daemon_handle,
+                                &rs,
+                                &ws,
+                                &es,
+                                &max));
+  haveto = MHD_get_timeout (daemon_handle, &timeout);
+  if (haveto == MHD_YES)
+  {
+    if (timeout != last_timeout)
+    {
+      LOG (GNUNET_ERROR_TYPE_DEBUG,
+           "SELECT Timeout changed from %llu to %llu (ms)\n",
+           last_timeout, timeout);
+      last_timeout = timeout;
+    }
+    if (timeout <= GNUNET_TIME_UNIT_SECONDS.rel_value_us / 1000LL)
+      tv.rel_value_us = (uint64_t) timeout * 1000LL;
+    else
+      tv = GNUNET_TIME_UNIT_SECONDS;
+  }
+  else
+    tv = GNUNET_TIME_UNIT_SECONDS;
+  /* Force immediate run, since we have outbound data to send */
+  if (now == GNUNET_YES)
+    tv = GNUNET_TIME_UNIT_MILLISECONDS;
+  GNUNET_NETWORK_fdset_copy_native (wrs, &rs, max + 1);
+  GNUNET_NETWORK_fdset_copy_native (wws, &ws, max + 1);
+
+  if (daemon_handle == plugin->server_v4)
+  {
+    if (plugin->server_v4_task != NULL)
+    {
+      GNUNET_SCHEDULER_cancel (plugin->server_v4_task);
+      plugin->server_v4_task = NULL;
+    }
+#if 0
+    LOG (GNUNET_ERROR_TYPE_DEBUG,
+         "Scheduling IPv4 server task in %llu ms\n",
+         tv);
+#endif
+    ret =
+        GNUNET_SCHEDULER_add_select (GNUNET_SCHEDULER_PRIORITY_DEFAULT,
+                                     tv, wrs, wws,
+                                     &server_v4_run, plugin);
+  }
+  if (daemon_handle == plugin->server_v6)
+  {
+    if (plugin->server_v6_task != NULL)
+    {
+      GNUNET_SCHEDULER_cancel (plugin->server_v6_task);
+      plugin->server_v6_task = NULL;
+    }
+#if 0
+    LOG (GNUNET_ERROR_TYPE_DEBUG,
+         "Scheduling IPv6 server task in %llu ms\n", tv);
+#endif
+    ret =
+        GNUNET_SCHEDULER_add_select (GNUNET_SCHEDULER_PRIORITY_DEFAULT,
+                                     tv, wrs, wws,
+                                     &server_v6_run, plugin);
+  }
+  GNUNET_NETWORK_fdset_destroy (wrs);
+  GNUNET_NETWORK_fdset_destroy (wws);
+  return ret;
+}
 
 
 /**
  * Reschedule the execution of both IPv4 and IPv6 server
+ *
  * @param plugin the plugin
  * @param server which server to schedule v4 or v6?
  * @param now #GNUNET_YES to schedule execution immediately, #GNUNET_NO to wait
@@ -808,10 +1089,10 @@ server_reschedule (struct HTTP_Server_Plugin *plugin,
     if (GNUNET_YES == now)
       plugin->server_v4_immediately = GNUNET_YES;
 
-    if (plugin->server_v4_task != GNUNET_SCHEDULER_NO_TASK)
+    if (plugin->server_v4_task != NULL)
     {
       GNUNET_SCHEDULER_cancel (plugin->server_v4_task);
-      plugin->server_v4_task = GNUNET_SCHEDULER_NO_TASK;
+      plugin->server_v4_task = NULL;
     }
     plugin->server_v4_task = server_schedule (plugin, plugin->server_v4, now);
   }
@@ -824,10 +1105,10 @@ server_reschedule (struct HTTP_Server_Plugin *plugin,
     if (GNUNET_YES == now)
       plugin->server_v6_immediately = GNUNET_YES;
 
-    if (plugin->server_v6_task != GNUNET_SCHEDULER_NO_TASK)
+    if (plugin->server_v6_task != NULL)
     {
       GNUNET_SCHEDULER_cancel (plugin->server_v6_task);
-      plugin->server_v6_task = GNUNET_SCHEDULER_NO_TASK;
+      plugin->server_v6_task = NULL;
     }
     plugin->server_v6_task = server_schedule (plugin, plugin->server_v6, now);
   }
@@ -835,69 +1116,35 @@ server_reschedule (struct HTTP_Server_Plugin *plugin,
 
 
 /**
- * Disconnect session @a s
+ * Function that is called to get the keepalive factor.
+ * GNUNET_CONSTANTS_IDLE_CONNECTION_TIMEOUT is divided by this number to
+ * calculate the interval between keepalive packets.
  *
  * @param cls closure with the `struct HTTP_Server_Plugin`
- * @param s the session
- * @return #GNUNET_OK on success
+ * @return keepalive factor
  */
-static int
-http_server_plugin_disconnect_session (void *cls,
-                                       struct Session *s)
+static unsigned int
+http_server_query_keepalive_factor (void *cls)
 {
-  struct HTTP_Server_Plugin *plugin = cls;
-  struct ServerConnection * send;
-  struct ServerConnection * recv;
-
-  if (GNUNET_NO == server_exist_session (plugin, s))
-  {
-    GNUNET_break (0);
-    return GNUNET_SYSERR;
-  }
-
-  send = (struct ServerConnection *) s->server_send;
-  if (s->server_send != NULL)
-  {
-    GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, s->plugin->name,
-                     "Server: %p / %p Terminating inbound PUT session to peer `%s'\n",
-                     s, s->server_send, GNUNET_i2s (&s->target));
-
-    send->disconnect = GNUNET_YES;
-    MHD_set_connection_option (send->mhd_conn,
-                               MHD_CONNECTION_OPTION_TIMEOUT,
-                               1);
-    server_reschedule (s->plugin, send->mhd_daemon, GNUNET_YES);
-  }
-
-  recv = (struct ServerConnection *) s->server_recv;
-  if (recv != NULL)
-  {
-    GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, s->plugin->name,
-                     "Server: %p / %p Terminating inbound GET session to peer `%s'\n",
-                     s, s->server_recv, GNUNET_i2s (&s->target));
-
-    recv->disconnect = GNUNET_YES;
-    MHD_set_connection_option (recv->mhd_conn,
-                               MHD_CONNECTION_OPTION_TIMEOUT,
-                               1);
-    server_reschedule (s->plugin, recv->mhd_daemon, GNUNET_YES);
-  }
-  return GNUNET_OK;
+  return 3;
 }
 
 
 /**
- * Function that is called to get the keepalive factor.
- * GNUNET_CONSTANTS_IDLE_CONNECTION_TIMEOUT is divided by this number to
- * calculate the interval between keepalive packets.
+ * Function that will be called whenever the transport service wants to
+ * notify the plugin that a session is still active and in use and
+ * therefore the session timeout for this session has to be updated
  *
- * @param cls closure with the `struct Plugin`
- * @return keepalive factor
+ * @param cls closure
+ * @param peer which peer was the session for
+ * @param session which session is being updated
  */
-static unsigned int
-http_server_query_keepalive_factor (void *cls)
+static void
+http_server_plugin_update_session_timeout (void *cls,
+                                           const struct GNUNET_PeerIdentity *peer,
+                                           struct GNUNET_ATS_Session *session)
 {
-  return 3;
+  server_reschedule_session_timeout (session);
 }
 
 
@@ -910,15 +1157,15 @@ http_server_query_keepalive_factor (void *cls)
  */
 static void
 server_mhd_connection_timeout (struct HTTP_Server_Plugin *plugin,
-                              struct Session *s,
+                              struct GNUNET_ATS_Session *s,
                               unsigned int to)
 {
-    /* Setting timeouts for other connections */
+  /* Setting timeouts for other connections */
   if (NULL != s->server_recv)
   {
-    GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, plugin->name,
-                    "Setting timeout for %p to %u sec.\n",
-                    s->server_recv, to);
+    LOG (GNUNET_ERROR_TYPE_DEBUG,
+         "Setting timeout for %p to %u sec.\n",
+         s->server_recv, to);
     MHD_set_connection_option (s->server_recv->mhd_conn,
                               MHD_CONNECTION_OPTION_TIMEOUT,
                               to);
@@ -926,9 +1173,9 @@ server_mhd_connection_timeout (struct HTTP_Server_Plugin *plugin,
   }
   if (NULL != s->server_send)
   {
-    GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, plugin->name,
-                    "Setting timeout for %p to %u sec.\n",
-                    s->server_send, to);
+    LOG (GNUNET_ERROR_TYPE_DEBUG,
+         "Setting timeout for %p to %u sec.\n",
+         s->server_send, to);
     MHD_set_connection_option (s->server_send->mhd_conn,
                               MHD_CONNECTION_OPTION_TIMEOUT,
                               to);
@@ -944,112 +1191,171 @@ server_mhd_connection_timeout (struct HTTP_Server_Plugin *plugin,
  * @param url incoming url
  * @param target where to store the target
  * @param tag where to store the tag
+ * @param options where to store the options
  * @return #GNUNET_OK on success, #GNUNET_SYSERR on error
  */
 static int
 server_parse_url (struct HTTP_Server_Plugin *plugin,
                  const char *url,
                  struct GNUNET_PeerIdentity *target,
-                 uint32_t *tag)
+                 uint32_t *tag,
+                 uint32_t *options)
 {
-  char * tag_start = NULL;
-  char * tag_end = NULL;
-  char * target_start = NULL;
-  char * separator = NULL;
-  unsigned int hash_length;
-  unsigned long int ctag;
-
-  /* URL parsing
-   * URL is valid if it is in the form [prefix with (multiple) '/'][peerid[103];tag]*/
+  regmatch_t matches[4];
+  const char *tag_start;
+  const char *target_start;
+  char *tag_end;
+  char *options_end;
+  size_t hash_length;
+  unsigned long int rc;
+
+  /* URL parsing */
+#define URL_REGEX \
+  ("^.*/([0-9A-Z]+);([0-9]+)(,[0-9]+)?$")
 
   if (NULL == url)
   {
-      GNUNET_break (0);
-      return GNUNET_SYSERR;
+    GNUNET_break (0);
+    return GNUNET_SYSERR;
   }
-  /* convert tag */
-
-  /* find separator */
-  separator = strrchr (url, ';');
 
-  if (NULL == separator)
+  if (regexec(&plugin->url_regex, url, 4, matches, 0))
   {
-      if (DEBUG_URL_PARSE) GNUNET_break (0);
-      return GNUNET_SYSERR;
+    LOG (GNUNET_ERROR_TYPE_DEBUG,
+         "URL `%s' did not match regex\n", url);
+    return GNUNET_SYSERR;
   }
-  tag_start = separator + 1;
 
-  if (strlen (tag_start) == 0)
+  target_start = &url[matches[1].rm_so];
+  tag_start = &url[matches[2].rm_so];
+
+  /* convert tag */
+  rc = strtoul (tag_start, &tag_end, 10);
+  if (&url[matches[2].rm_eo] != tag_end)
   {
-    /* No tag after separator */
-    if (DEBUG_URL_PARSE) GNUNET_break (0);
+    LOG (GNUNET_ERROR_TYPE_DEBUG,
+         "URL tag did not line up with submatch\n");
     return GNUNET_SYSERR;
   }
-  ctag = strtoul (tag_start, &tag_end, 10);
-  if (ctag == 0)
+  if (rc == 0)
   {
-    /* tag == 0 , invalid */
-    if (DEBUG_URL_PARSE) GNUNET_break (0);
+    LOG (GNUNET_ERROR_TYPE_DEBUG,
+         "URL tag is zero\n");
     return GNUNET_SYSERR;
   }
-  if ((ctag == ULONG_MAX) && (ERANGE == errno))
+  if ((rc == ULONG_MAX) && (ERANGE == errno))
   {
-    /* out of range: > ULONG_MAX */
-    if (DEBUG_URL_PARSE) GNUNET_break (0);
+    LOG (GNUNET_ERROR_TYPE_DEBUG,
+         "URL tag > ULONG_MAX\n");
     return GNUNET_SYSERR;
   }
-  if (ctag > UINT32_MAX)
+  if (rc > UINT32_MAX)
   {
-    /* out of range: > UINT32_MAX */
-    if (DEBUG_URL_PARSE) GNUNET_break (0);
+    LOG (GNUNET_ERROR_TYPE_DEBUG,
+         "URL tag > UINT32_MAX\n");
     return GNUNET_SYSERR;
   }
-  (*tag) = (uint32_t) ctag;
-  if (NULL == tag_end)
-  {
-      /* no char after tag */
-      if (DEBUG_URL_PARSE) GNUNET_break (0);
-      return GNUNET_SYSERR;
-  }
-  if (url[strlen(url)] != tag_end[0])
-  {
-      /* there are more not converted chars after tag */
-      if (DEBUG_URL_PARSE) GNUNET_break (0);
-      return GNUNET_SYSERR;
-  }
-  if (DEBUG_URL_PARSE)
-    GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, plugin->name,
-       "Found tag `%u' in url\n", (*tag));
+  (*tag) = (uint32_t)rc;
+  LOG (GNUNET_ERROR_TYPE_DEBUG,
+       "Found tag `%u' in url\n",
+       *tag);
 
   /* convert peer id */
-  target_start = strrchr (url, '/');
-  if (NULL == target_start)
-  {
-      /* no leading '/' */
-      target_start = (char *) url;
-  }
-  target_start++;
-  hash_length = separator - target_start;
+  hash_length = matches[1].rm_eo - matches[1].rm_so;
   if (hash_length != plugin->peer_id_length)
   {
-      /* no char after tag */
-      if (DEBUG_URL_PARSE) GNUNET_break (0);
-      return GNUNET_SYSERR;
+    LOG (GNUNET_ERROR_TYPE_DEBUG,
+         "URL target is %u bytes, expecting %u\n",
+         hash_length, plugin->peer_id_length);
+    return GNUNET_SYSERR;
   }
   if (GNUNET_OK !=
       GNUNET_CRYPTO_eddsa_public_key_from_string (target_start,
                                                     hash_length,
                                                     &target->public_key))
+  {
+    LOG (GNUNET_ERROR_TYPE_DEBUG,
+         "URL target conversion failed\n");
+    return GNUNET_SYSERR;
+  }
+  LOG (GNUNET_ERROR_TYPE_DEBUG,
+       "Found target `%s' in URL\n",
+       GNUNET_i2s_full (target));
+
+  /* convert options */
+  if (-1 == matches[3].rm_so)
+  {
+    *options = 0;
+  }
+  else
+  {
+    rc = strtoul (&url[matches[3].rm_so + 1], &options_end, 10);
+    if (&url[matches[3].rm_eo] != options_end)
+    {
+      LOG (GNUNET_ERROR_TYPE_DEBUG,
+           "URL options did not line up with submatch\n");
+      return GNUNET_SYSERR;
+    }
+    if ((rc == ULONG_MAX) && (ERANGE == errno))
+    {
+      LOG (GNUNET_ERROR_TYPE_DEBUG,
+           "URL options > ULONG_MAX\n");
+      return GNUNET_SYSERR;
+    }
+    if (rc > UINT32_MAX)
     {
-      /* hash conversion failed */
-      if (DEBUG_URL_PARSE) GNUNET_break (0);
+      LOG (GNUNET_ERROR_TYPE_DEBUG,
+           "URL options > UINT32_MAX\n");
       return GNUNET_SYSERR;
+    }
+    (*options) = (uint32_t) rc;
+    LOG (GNUNET_ERROR_TYPE_DEBUG,
+         "Found options `%u' in url\n",
+         *options);
+  }
+  return GNUNET_OK;
+}
+
+
+/**
+ * Closure for #session_tag_it().
+ */
+struct GNUNET_ATS_SessionTagContext
+{
+  /**
+   * Set to session matching the tag.
+   */
+  struct GNUNET_ATS_Session *res;
+
+  /**
+   * Tag we are looking for.
+   */
+  uint32_t tag;
+};
+
+
+/**
+ * Find a session with a matching tag.
+ *
+ * @param cls the `struct GNUNET_ATS_SessionTagContext *`
+ * @param key peer identity (unused)
+ * @param value the `struct GNUNET_ATS_Session *`
+ * @return #GNUNET_NO if we found the session, #GNUNET_OK if not
+ */
+static int
+session_tag_it (void *cls,
+                const struct GNUNET_PeerIdentity *key,
+                void *value)
+{
+  struct GNUNET_ATS_SessionTagContext *stc = cls;
+  struct GNUNET_ATS_Session *s = value;
+
+  if (s->tag == stc->tag)
+  {
+    stc->res = s;
+    return GNUNET_NO;
   }
-  GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG,
-                  plugin->name,
-                  "Found target `%s' in URL\n",
-                  GNUNET_i2s_full (target));
-  return GNUNET_OK;
+  return GNUNET_YES;
 }
 
 
@@ -1062,35 +1368,41 @@ server_parse_url (struct HTTP_Server_Plugin *plugin,
  * @param method PUT or GET
  * @return the server connecetion
  */
-static struct ServerConnection *
+static struct ServerRequest *
 server_lookup_connection (struct HTTP_Server_Plugin *plugin,
-                       struct MHD_Connection *mhd_connection, const char *url,
-                       const char *method)
+                          struct MHD_Connection *mhd_connection,
+                          const char *url,
+                          const char *method)
 {
-  struct Session *s = NULL;
-  struct ServerConnection *sc = NULL;
+  struct GNUNET_ATS_Session *s = NULL;
+  struct ServerRequest *sc = NULL;
   const union MHD_ConnectionInfo *conn_info;
-  struct GNUNET_ATS_Information ats;
   struct HttpAddress *addr;
-  size_t addr_len;
   struct GNUNET_PeerIdentity target;
-  uint32_t tag = 0;
+  size_t addr_len;
+  struct GNUNET_ATS_SessionTagContext stc;
+  uint32_t options;
   int direction = GNUNET_SYSERR;
   unsigned int to;
+  enum GNUNET_ATS_Network_Type scope;
 
   conn_info = MHD_get_connection_info (mhd_connection,
                                        MHD_CONNECTION_INFO_CLIENT_ADDRESS);
   if ((conn_info->client_addr->sa_family != AF_INET) &&
       (conn_info->client_addr->sa_family != AF_INET6))
     return NULL;
-  GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, plugin->name,
-                   "New %s connection from %s\n", method, url);
-
-  if (GNUNET_SYSERR == server_parse_url (plugin, url, &target, &tag))
-  {
-      GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, plugin->name,
-                       "Invalid url %s\n", url);
-      return NULL;
+  LOG (GNUNET_ERROR_TYPE_DEBUG,
+       "New %s request from %s\n",
+       method,
+       url);
+  stc.tag = 0;
+  options = 0; /* make gcc happy */
+  if (GNUNET_SYSERR ==
+      server_parse_url (plugin, url, &target, &stc.tag, &options))
+  {
+    LOG (GNUNET_ERROR_TYPE_DEBUG,
+         "Invalid url %s\n", url);
+    return NULL;
   }
   if (0 == strcmp (MHD_HTTP_METHOD_PUT, method))
     direction = _RECEIVE;
@@ -1098,92 +1410,105 @@ server_lookup_connection (struct HTTP_Server_Plugin *plugin,
     direction = _SEND;
   else
   {
-    GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, plugin->name,
-                     "Invalid method %s connection from %s\n", method, url);
+    LOG (GNUNET_ERROR_TYPE_DEBUG,
+         "Invalid method %s for request from %s\n",
+         method, url);
     return NULL;
   }
 
-  plugin->cur_connections++;
-  GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, plugin->name,
-                   "New %s connection from %s with tag %u (%u of %u)\n",
-                   method,
-                   GNUNET_i2s (&target), tag,
-                   plugin->cur_connections, plugin->max_connections);
-  /* find duplicate session */
-  s = plugin->head;
-  while (s != NULL)
-  {
-    if ((0 == memcmp (&s->target, &target, sizeof (struct GNUNET_PeerIdentity))) &&
-        (s->tag == tag))
-      break;
-    s = s->next;
-  }
-  if (s != NULL)
-  {
-    if ((_RECEIVE == direction) && (NULL != s->server_recv))
-    {
-      GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, plugin->name,
-                       "Duplicate PUT connection from `%s' tag %u, dismissing new connection\n",
-                       GNUNET_i2s (&target),
-                       tag);
-      return NULL;
-
-    }
-    if ((_SEND == direction) && (NULL != s->server_send))
-    {
-        GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, plugin->name,
-                         "Duplicate GET connection from `%s' tag %u, dismissing new connection\n",
-                         GNUNET_i2s (&target),
-                         tag);
-        return NULL;
-    }
-  }
-  else
+  plugin->cur_request++;
+  LOG (GNUNET_ERROR_TYPE_DEBUG,
+       "New %s request from %s with tag %u (%u of %u)\n",
+       method,
+       GNUNET_i2s (&target),
+       stc.tag,
+       plugin->cur_request, plugin->max_request);
+  /* find existing session */
+  stc.res = NULL;
+  GNUNET_CONTAINER_multipeermap_get_multiple (plugin->sessions,
+                                              &target,
+                                              &session_tag_it,
+                                              &stc);
+  if (NULL == (s = stc.res))
   {
     /* create new session */
+    addr = NULL;
     switch (conn_info->client_addr->sa_family)
     {
     case (AF_INET):
-      addr = http_common_address_from_socket (plugin->protocol, conn_info->client_addr, sizeof (struct sockaddr_in));
+      addr = http_common_address_from_socket (plugin->protocol,
+                                              conn_info->client_addr,
+                                              sizeof (struct sockaddr_in));
       addr_len = http_common_address_get_size (addr);
-      ats = plugin->env->get_address_type (plugin->env->cls, conn_info->client_addr, sizeof (struct sockaddr_in));
+      scope = plugin->env->get_address_type (plugin->env->cls,
+                                             conn_info->client_addr,
+                                             sizeof (struct sockaddr_in));
       break;
     case (AF_INET6):
-      addr = http_common_address_from_socket (plugin->protocol, conn_info->client_addr, sizeof (struct sockaddr_in6));
+      addr = http_common_address_from_socket (plugin->protocol,
+                                              conn_info->client_addr,
+                                              sizeof (struct sockaddr_in6));
       addr_len = http_common_address_get_size (addr);
-      ats = plugin->env->get_address_type (plugin->env->cls, conn_info->client_addr, sizeof (struct sockaddr_in6));
+      scope = plugin->env->get_address_type (plugin->env->cls,
+                                             conn_info->client_addr,
+                                             sizeof (struct sockaddr_in6));
       break;
     default:
-       /* external host name */
-      ats.type = htonl (GNUNET_ATS_NETWORK_TYPE);
-      ats.type = htonl (GNUNET_ATS_NET_WAN);
+      /* external host name */
       return NULL;
     }
-
-    s = GNUNET_new (struct Session);
-    memcpy (&s->target, &target, sizeof (struct GNUNET_PeerIdentity));
+    s = GNUNET_new (struct GNUNET_ATS_Session);
+    s->target = target;
     s->plugin = plugin;
-    s->addr = addr;
-    s->addrlen = addr_len;
-    s->ats_address_network_type = ats.value;
+    s->scope = scope;
+    s->address = GNUNET_HELLO_address_allocate (&s->target,
+                                                PLUGIN_NAME,
+                                                addr,
+                                                addr_len,
+                                                GNUNET_HELLO_ADDRESS_INFO_INBOUND);
     s->next_receive = GNUNET_TIME_UNIT_ZERO_ABS;
-    s->tag = tag;
-    s->server_recv = NULL;
-    s->server_send = NULL;
-    s->session_passed = GNUNET_NO;
-    s->session_ended = GNUNET_NO;
-    s->connect_in_progress = GNUNET_YES;
-    server_start_session_timeout(s);
-    GNUNET_CONTAINER_DLL_insert (plugin->head, plugin->tail, s);
-
-    GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, plugin->name,
-                     "Creating new session %p for peer `%s' connecting from `%s'\n",
-                     s, GNUNET_i2s (&target),
-                     http_common_plugin_address_to_string (NULL,
-                                                           plugin->protocol,
-                                                           addr, addr_len));
-  }
-  sc = GNUNET_new (struct ServerConnection);
+    s->tag = stc.tag;
+    s->timeout = GNUNET_TIME_relative_to_absolute (HTTP_SERVER_SESSION_TIMEOUT);
+    s->timeout_task = GNUNET_SCHEDULER_add_delayed (HTTP_SERVER_SESSION_TIMEOUT,
+                                                    &server_session_timeout,
+                                                    s);
+    (void) GNUNET_CONTAINER_multipeermap_put (plugin->sessions,
+                                              &s->target,
+                                              s,
+                                              GNUNET_CONTAINER_MULTIHASHMAPOPTION_MULTIPLE);
+    notify_session_monitor (plugin,
+                            s,
+                            GNUNET_TRANSPORT_SS_INIT);
+    notify_session_monitor (plugin,
+                            s,
+                            GNUNET_TRANSPORT_SS_HANDSHAKE);
+    LOG (GNUNET_ERROR_TYPE_DEBUG,
+         "Creating new session %p for peer `%s' connecting from `%s'\n",
+         s, GNUNET_i2s (&target),
+         http_common_plugin_address_to_string (plugin->protocol,
+                                               addr,
+                                               addr_len));
+    GNUNET_free_non_null (addr);
+  }
+
+  if ( (_RECEIVE == direction) &&
+       (NULL != s->server_recv) )
+  {
+    LOG (GNUNET_ERROR_TYPE_DEBUG,
+         "Duplicate PUT request from `%s' tag %u, dismissing new request\n",
+         GNUNET_i2s (&target),
+         stc.tag);
+    return NULL;
+  }
+  if ((_SEND == direction) && (NULL != s->server_send))
+  {
+    LOG (GNUNET_ERROR_TYPE_DEBUG,
+         "Duplicate GET request from `%s' tag %u, dismissing new request\n",
+         GNUNET_i2s (&target),
+         stc.tag);
+    return NULL;
+  }
+  sc = GNUNET_new (struct ServerRequest);
   if (conn_info->client_addr->sa_family == AF_INET)
     sc->mhd_daemon = plugin->server_v4;
   if (conn_info->client_addr->sa_family == AF_INET6)
@@ -1192,90 +1517,65 @@ server_lookup_connection (struct HTTP_Server_Plugin *plugin,
   sc->direction = direction;
   sc->connected = GNUNET_NO;
   sc->session = s;
+  sc->options = options;
   if (direction == _SEND)
+  {
     s->server_send = sc;
+  }
   if (direction == _RECEIVE)
-    s->server_recv = sc;
-
-  if ((NULL != s->server_send) && (NULL != s->server_recv))
   {
-    s->connect_in_progress = GNUNET_NO; /* PUT and GET are connected */
-    plugin->env->session_start (NULL, &s->target, PLUGIN_NAME, NULL, 0 ,s, NULL, 0);
+    s->server_recv = sc;
   }
 
-  if ((NULL == s->server_recv) || (NULL == s->server_send))
+  if ((GNUNET_NO == s->known_to_service) &&
+      (NULL != s->server_send) &&
+      (NULL != s->server_recv) )
   {
-    to = (HTTP_SERVER_NOT_VALIDATED_TIMEOUT.rel_value_us / 1000LL / 1000LL);
-    MHD_set_connection_option (mhd_connection,
-                              MHD_CONNECTION_OPTION_TIMEOUT, to);
-    server_reschedule (plugin, sc->mhd_daemon, GNUNET_NO);
-  }
-  else
-  {
-    GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, plugin->name,
-                     "Session %p for peer `%s' fully connected\n",
-                     s, GNUNET_i2s (&target));
-    to = (HTTP_SERVER_SESSION_TIMEOUT.rel_value_us / 1000LL / 1000LL);
-    server_mhd_connection_timeout (plugin, s, to);
+    s->known_to_service = GNUNET_YES;
+    notify_session_monitor (plugin,
+                            s,
+                            GNUNET_TRANSPORT_SS_UP);
+    plugin->env->session_start (plugin->env->cls,
+                                s->address,
+                                s,
+                                s->scope);
   }
 
-  GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, plugin->name,
-                   "Setting timeout for %p to %u sec.\n", sc, to);
+  to = (HTTP_SERVER_SESSION_TIMEOUT.rel_value_us / 1000LL / 1000LL);
+  server_mhd_connection_timeout (plugin, s, to);
   return sc;
 }
 
 
-/**
- * Lookup a session for a server connection
- *
- * @param plugin the plugin
- * @param sc the server connection
- * @return the session found or NULL
- */
-static struct Session *
-server_lookup_session (struct HTTP_Server_Plugin *plugin,
-                       struct ServerConnection * sc)
-{
-  struct Session *s;
-
-  for (s = plugin->head; NULL != s; s = s->next)
-    if ((s->server_recv == sc) || (s->server_send == sc))
-      return s;
-  return NULL;
-}
-
-
-static int
-server_exist_session (struct HTTP_Server_Plugin *plugin,
-                      struct Session *s)
-{
-  struct Session * head;
-
-  for (head = plugin->head; head != NULL; head = head->next)
-    if (head == s)
-      return GNUNET_YES;
-  return GNUNET_NO;
-}
-
-
 /**
  * Callback called by MHD when it needs data to send
  *
  * @param cls current session
  * @param pos position in buffer
  * @param buf the buffer to write data to
- * @param max max number of bytes available in buffer
- * @return bytes written to buffer
+ * @param max max number of bytes available in @a buf
+ * @return bytes written to @a buf
  */
 static ssize_t
-server_send_callback (void *cls, uint64_t pos, char *buf, size_t max)
+server_send_callback (void *cls,
+                      uint64_t pos,
+                      char *buf,
+                      size_t max)
 {
-  struct Session *s = cls;
+  struct ServerRequest *sc = cls;
+  struct GNUNET_ATS_Session *s = sc->session;
   ssize_t bytes_read = 0;
   struct HTTP_Message *msg;
   char *stat_txt;
 
-  if (GNUNET_NO == server_exist_session (s->plugin, s))
+  if (NULL == s)
+  {
+    /* session is disconnecting */
+    return 0;
+  }
+
+  sc = s->server_send;
+  if (NULL == sc)
     return 0;
   msg = s->msg_head;
   if (NULL != msg)
@@ -1283,34 +1583,65 @@ server_send_callback (void *cls, uint64_t pos, char *buf, size_t max)
     /* sending */
     bytes_read = GNUNET_MIN (msg->size - msg->pos,
                              max);
-    memcpy (buf, &msg->buf[msg->pos], bytes_read);
+    GNUNET_memcpy (buf, &msg->buf[msg->pos], bytes_read);
     msg->pos += bytes_read;
 
     /* removing message */
     if (msg->pos == msg->size)
     {
-      GNUNET_CONTAINER_DLL_remove (s->msg_head, s->msg_tail, msg);
+      GNUNET_CONTAINER_DLL_remove (s->msg_head,
+                                   s->msg_tail,
+                                   msg);
       if (NULL != msg->transmit_cont)
         msg->transmit_cont (msg->transmit_cont_cls, &s->target, GNUNET_OK,
                             msg->size, msg->size + msg->overhead);
+      GNUNET_assert (s->msgs_in_queue > 0);
+      s->msgs_in_queue--;
+      GNUNET_assert (s->bytes_in_queue >= msg->size);
+      s->bytes_in_queue -= msg->size;
       GNUNET_free (msg);
+      notify_session_monitor (s->plugin,
+                              s,
+                              GNUNET_TRANSPORT_SS_UPDATE);
     }
   }
   if (0 < bytes_read)
   {
-    GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, s->plugin->name,
-                   "Sent %u bytes to peer `%s' with session %p \n", bytes_read, GNUNET_i2s (&s->target), s);
-    GNUNET_asprintf (&stat_txt, "# bytes currently in %s_server buffers",
+    sc->connected = GNUNET_YES;
+    LOG (GNUNET_ERROR_TYPE_DEBUG,
+         "Sent %u bytes to peer `%s' with session %p \n",
+         bytes_read,
+         GNUNET_i2s (&s->target),
+         s);
+    GNUNET_asprintf (&stat_txt,
+                     "# bytes currently in %s_server buffers",
                      s->plugin->protocol);
     GNUNET_STATISTICS_update (s->plugin->env->stats,
-                              stat_txt, -bytes_read, GNUNET_NO);
+                              stat_txt,
+                              - bytes_read,
+                              GNUNET_NO);
     GNUNET_free (stat_txt);
-    GNUNET_asprintf (&stat_txt, "# bytes transmitted via %s_server",
+    GNUNET_asprintf (&stat_txt,
+                     "# bytes transmitted via %s_server",
                      s->plugin->protocol);
     GNUNET_STATISTICS_update (s->plugin->env->stats,
                               stat_txt, bytes_read, GNUNET_NO);
     GNUNET_free (stat_txt);
   }
+  else if ((sc->options & OPTION_LONG_POLL) && sc->connected)
+  {
+    LOG (GNUNET_ERROR_TYPE_DEBUG,
+         "Completing GET response to peer `%s' with session %p\n",
+         GNUNET_i2s (&s->target),
+         s);
+    return MHD_CONTENT_READER_END_OF_STREAM;
+  }
+  else
+  {
+    MHD_suspend_connection (s->server_send->mhd_conn);
+    s->server_send->suspended = true;
+    return 0;
+  }
   return bytes_read;
 }
 
@@ -1319,61 +1650,79 @@ server_send_callback (void *cls, uint64_t pos, char *buf, size_t max)
  * Callback called by MessageStreamTokenizer when a message has arrived
  *
  * @param cls current session as closure
- * @param client client
  * @param message the message to be forwarded to transport service
- * @return #GNUNET_OK
+ * @return #GNUNET_OK (all OK)
  */
 static int
-server_receive_mst_cb (void *cls, void *client,
+server_receive_mst_cb (void *cls,
                        const struct GNUNET_MessageHeader *message)
 {
-  struct Session *s = cls;
+  struct GNUNET_ATS_Session *s = cls;
   struct HTTP_Server_Plugin *plugin = s->plugin;
-  struct GNUNET_ATS_Information atsi;
   struct GNUNET_TIME_Relative delay;
   char *stat_txt;
 
-  if (GNUNET_NO == server_exist_session (s->plugin, s))
-    return GNUNET_OK;
-
-
-  atsi.type = htonl (GNUNET_ATS_NETWORK_TYPE);
-  atsi.value = s->ats_address_network_type;
-  GNUNET_break (s->ats_address_network_type != ntohl (GNUNET_ATS_NET_UNSPECIFIED));
-
-
+  if (GNUNET_NO == s->known_to_service)
+  {
+    s->known_to_service = GNUNET_YES;
+    plugin->env->session_start (plugin->env->cls,
+                                s->address,
+                                s,
+                                s->scope);
+    notify_session_monitor (plugin,
+                            s,
+                            GNUNET_TRANSPORT_SS_UP);
+  }
   delay = plugin->env->receive (plugin->env->cls,
-                                &s->target,
-                                message,
-                                s, NULL, 0);
-
-  plugin->env->update_address_metrics (plugin->env->cls,
-                                      &s->target,
-                                      NULL, 0, s, &atsi, 1);
-
-  GNUNET_asprintf (&stat_txt, "# bytes received via %s_server", plugin->protocol);
+                                s->address,
+                                s,
+                                message);
+  GNUNET_asprintf (&stat_txt,
+                   "# bytes received via %s_server",
+                   plugin->protocol);
   GNUNET_STATISTICS_update (plugin->env->stats,
-                            stat_txt, ntohs (message->size), GNUNET_NO);
+                            stat_txt,
+                           ntohs (message->size),
+                           GNUNET_NO);
   GNUNET_free (stat_txt);
-
-  s->session_passed = GNUNET_YES;
-  s->next_receive = GNUNET_TIME_absolute_add (GNUNET_TIME_absolute_get (), delay);
+  s->next_receive = GNUNET_TIME_relative_to_absolute (delay);
   if (delay.rel_value_us > 0)
   {
-    GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, plugin->name,
-                     "Peer `%s' address `%s' next read delayed for %s\n",
-                     GNUNET_i2s (&s->target),
-                     http_common_plugin_address_to_string (NULL,
-                                                           plugin->protocol,
-                                                           s->addr, s->addrlen),
-                     GNUNET_STRINGS_relative_time_to_string (delay,
-                                                            GNUNET_YES));
+    LOG (GNUNET_ERROR_TYPE_DEBUG,
+         "Peer `%s' address `%s' next read delayed for %s\n",
+         GNUNET_i2s (&s->target),
+         http_common_plugin_address_to_string (plugin->protocol,
+                                               s->address->address,
+                                               s->address->address_length),
+         GNUNET_STRINGS_relative_time_to_string (delay,
+                                                 GNUNET_YES));
   }
   server_reschedule_session_timeout (s);
   return GNUNET_OK;
 }
 
 
+/**
+ * Add headers to a request indicating that we allow Cross-Origin Resource
+ * Sharing.
+ *
+ * @param response response object to modify
+ */
+static void
+add_cors_headers(struct MHD_Response *response)
+{
+  MHD_add_response_header (response,
+                           "Access-Control-Allow-Origin",
+                           "*");
+  MHD_add_response_header (response,
+                           "Access-Control-Allow-Methods",
+                           "GET, PUT, OPTIONS");
+  MHD_add_response_header (response,
+                           "Access-Control-Max-Age",
+                           "86400");
+}
+
+
 /**
  * MHD callback for a new incoming connection
  *
@@ -1383,82 +1732,88 @@ server_receive_mst_cb (void *cls, void *client,
  * @param method GET or PUT
  * @param version HTTP version
  * @param upload_data upload data
- * @param upload_data_size sizeof upload data
+ * @param upload_data_size size of @a upload_data
  * @param httpSessionCache the session cache to remember the connection
  * @return MHD_YES if connection is accepted, MHD_NO on reject
  */
 static int
-server_access_cb (void *cls, struct MHD_Connection *mhd_connection,
-                  const char *url, const char *method, const char *version,
-                  const char *upload_data, size_t * upload_data_size,
+server_access_cb (void *cls,
+                  struct MHD_Connection *mhd_connection,
+                  const char *url,
+                  const char *method,
+                  const char *version,
+                  const char *upload_data,
+                  size_t *upload_data_size,
                   void **httpSessionCache)
 {
   struct HTTP_Server_Plugin *plugin = cls;
-  int res = MHD_YES;
-
-  struct ServerConnection *sc = *httpSessionCache;
-  struct Session *s;
+  struct ServerRequest *sc = *httpSessionCache;
+  struct GNUNET_ATS_Session *s;
   struct MHD_Response *response;
+  int res = MHD_YES;
 
-  GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, plugin->name,
-                   _("Access from connection %p (%u of %u) for `%s' `%s' url `%s' with upload data size %u\n"),
-                   sc,
-                   plugin->cur_connections, plugin->max_connections,
-                   method, version, url, (*upload_data_size));
-
-  GNUNET_assert (cls != NULL);
-  if (sc == NULL)
-  {
+  LOG (GNUNET_ERROR_TYPE_DEBUG,
+       _("Access from connection %p (%u of %u) for `%s' `%s' url `%s' with upload data size %u\n"),
+       sc,
+       plugin->cur_request,
+       plugin->max_request,
+       method,
+       version,
+       url,
+       (*upload_data_size));
+  if (NULL == sc)
+  {
+    /* CORS pre-flight request */
+    if (0 == strcmp (MHD_HTTP_METHOD_OPTIONS, method))
+    {
+      response = MHD_create_response_from_buffer (0, NULL,
+          MHD_RESPMEM_PERSISTENT);
+      add_cors_headers(response);
+      res = MHD_queue_response (mhd_connection, MHD_HTTP_OK, response);
+      MHD_destroy_response (response);
+      return res;
+    }
     /* new connection */
     sc = server_lookup_connection (plugin, mhd_connection, url, method);
-    if (sc != NULL)
+    if (NULL != sc)
     {
+      /* attach to new / existing session */
       (*httpSessionCache) = sc;
     }
     else
     {
-      response = MHD_create_response_from_data (strlen (HTTP_ERROR_RESPONSE), HTTP_ERROR_RESPONSE, MHD_NO, MHD_NO);
+      /* existing session already has matching connection, refuse */
+      response = MHD_create_response_from_buffer (strlen (HTTP_ERROR_RESPONSE),
+                                                  HTTP_ERROR_RESPONSE,
+                                                  MHD_RESPMEM_PERSISTENT);
       MHD_add_response_header (response,
                               MHD_HTTP_HEADER_CONTENT_TYPE,
                               "text/html");
+      add_cors_headers(response);
       res = MHD_queue_response (mhd_connection, MHD_HTTP_NOT_FOUND, response);
       MHD_destroy_response (response);
       return res;
     }
   }
-  else
-  {
-    /* 'old' connection */
-    if (NULL == server_lookup_session (plugin, sc))
-    {
-      /* Session was already disconnected */
-      return MHD_NO;
-    }
-  }
-
-  /* existing connection */
-  sc = (*httpSessionCache);
-  s = sc->session;
-  GNUNET_assert (NULL != s);
-  /* connection is to be disconnected */
-  if (sc->disconnect == GNUNET_YES)
+  /* 'old' connection */
+  if (NULL == (s = sc->session))
   {
-    /* Sent HTTP/1.1: 200 OK as response */
-    response = MHD_create_response_from_data (strlen ("Thank you!"),
-                                       "Thank you!",
-                                       MHD_NO, MHD_NO);
+    /* Session was already disconnected;
+       sent HTTP/1.1: 200 OK as response */
+    response = MHD_create_response_from_buffer (strlen ("Thank you!"),
+                                                "Thank you!",
+                                                MHD_RESPMEM_PERSISTENT);
+    add_cors_headers(response);
     MHD_queue_response (mhd_connection, MHD_HTTP_OK, response);
     MHD_destroy_response (response);
     return MHD_YES;
   }
-  GNUNET_assert (s != NULL);
 
   if (sc->direction == _SEND)
   {
-    response = MHD_create_response_from_callback (MHD_SIZE_UNKNOWN,
-                                                  32 * 1024,
-                                                  &server_send_callback, s,
-                                                  NULL);
+    response = MHD_create_response_from_callback (MHD_SIZE_UNKNOWN, 32 * 1024,
+        &server_send_callback, sc, NULL);
+    add_cors_headers(response);
     MHD_queue_response (mhd_connection, MHD_HTTP_OK, response);
     MHD_destroy_response (response);
     return MHD_YES;
@@ -1468,73 +1823,86 @@ server_access_cb (void *cls, struct MHD_Connection *mhd_connection,
     if ((*upload_data_size == 0) && (sc->connected == GNUNET_NO))
     {
       /* (*upload_data_size == 0) first callback when header are passed */
-      GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, plugin->name,
-                       "Session %p / Connection %p: Peer `%s' PUT on address `%s' connected\n",
-                       s, sc,
-                       GNUNET_i2s (&s->target),
-                       http_common_plugin_address_to_string (NULL,
-                                                             plugin->protocol,
-                                                             s->addr,
-                                                             s->addrlen));
+      LOG (GNUNET_ERROR_TYPE_DEBUG,
+           "Session %p / Connection %p: Peer `%s' PUT on address `%s' connected\n",
+           s, sc,
+           GNUNET_i2s (&s->target),
+           http_common_plugin_address_to_string (plugin->protocol,
+                                                 s->address->address,
+                                                 s->address->address_length));
       sc->connected = GNUNET_YES;
       return MHD_YES;
     }
     else if ((*upload_data_size == 0) && (sc->connected == GNUNET_YES))
     {
       /* (*upload_data_size == 0) when upload is complete */
-      GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, plugin->name,
-                       "Session %p / Connection %p: Peer `%s' PUT on address `%s' finished upload\n",
-                       s, sc,
-                       GNUNET_i2s (&s->target),
-                       http_common_plugin_address_to_string (NULL,
-                                                             plugin->protocol,
-                                                             s->addr,
-                                                             s->addrlen));
+      LOG (GNUNET_ERROR_TYPE_DEBUG,
+           "Session %p / Connection %p: Peer `%s' PUT on address `%s' finished upload\n",
+           s, sc,
+           GNUNET_i2s (&s->target),
+           http_common_plugin_address_to_string (plugin->protocol,
+                                                 s->address->address,
+                                                 s->address->address_length));
       sc->connected = GNUNET_NO;
       /* Sent HTTP/1.1: 200 OK as PUT Response\ */
-      response = MHD_create_response_from_data (strlen ("Thank you!"),
-                                         "Thank you!",
-                                         MHD_NO, MHD_NO);
+      response = MHD_create_response_from_buffer (strlen ("Thank you!"),
+                                                  "Thank you!",
+                                                  MHD_RESPMEM_PERSISTENT);
+      add_cors_headers(response);
       MHD_queue_response (mhd_connection, MHD_HTTP_OK, response);
       MHD_destroy_response (response);
       return MHD_YES;
     }
     else if ((*upload_data_size > 0) && (sc->connected == GNUNET_YES))
     {
+      struct GNUNET_TIME_Relative delay;
+
       /* (*upload_data_size > 0) for every segment received */
-      GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, plugin->name,
-                       "Session %p / Connection %p: Peer `%s' PUT on address `%s' received %u bytes\n",
-                       s, sc,
-                       GNUNET_i2s (&s->target),
-                       http_common_plugin_address_to_string (NULL,
-                                                             plugin->protocol,
-                                                             s->addr,
-                                                             s->addrlen),
-                       *upload_data_size);
-      struct GNUNET_TIME_Absolute now = GNUNET_TIME_absolute_get ();
-
-      if ((s->next_receive.abs_value_us <= now.abs_value_us))
+      LOG (GNUNET_ERROR_TYPE_DEBUG,
+           "Session %p / Connection %p: Peer `%s' PUT on address `%s' received %u bytes\n",
+           s, sc,
+           GNUNET_i2s (&s->target),
+           http_common_plugin_address_to_string (plugin->protocol,
+                                                 s->address->address,
+                                                 s->address->address_length),
+           *upload_data_size);
+      delay = GNUNET_TIME_absolute_get_remaining (s->next_receive);
+      if (0 == delay.rel_value_us)
       {
-        GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, plugin->name,
-                         "PUT with %u bytes forwarded to MST\n",
-                         *upload_data_size);
+        LOG (GNUNET_ERROR_TYPE_DEBUG,
+             "PUT with %u bytes forwarded to MST\n",
+             *upload_data_size);
         if (s->msg_tk == NULL)
         {
-          s->msg_tk = GNUNET_SERVER_mst_create (&server_receive_mst_cb, s);
+          s->msg_tk = GNUNET_MST_create (&server_receive_mst_cb,
+                                         s);
         }
-            GNUNET_SERVER_mst_receive (s->msg_tk, s, upload_data,
-                                       *upload_data_size, GNUNET_NO, GNUNET_NO);
+        GNUNET_MST_from_buffer (s->msg_tk,
+                                upload_data,
+                                *upload_data_size,
+                                GNUNET_NO, GNUNET_NO);
         server_mhd_connection_timeout (plugin, s,
-                                      GNUNET_CONSTANTS_IDLE_CONNECTION_TIMEOUT.rel_value_us / 1000LL / 1000LL);
+                                       GNUNET_CONSTANTS_IDLE_CONNECTION_TIMEOUT.rel_value_us / 1000LL
+                                       / 1000LL);
         (*upload_data_size) = 0;
       }
       else
       {
+        /* delay processing */
         GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
-                    "Session %p / Connection %p: no inbound bandwidth available! Next read was delayed by %s\n",
-                    s, sc,
-                   GNUNET_STRINGS_relative_time_to_string (GNUNET_TIME_absolute_get_duration (s->next_receive),
+                   "Session %p / Connection %p: no inbound bandwidth available! Next read was delayed by %s\n",
+                   s,
+                   sc,
+                   GNUNET_STRINGS_relative_time_to_string (delay,
                                                            GNUNET_YES));
+        GNUNET_assert(s->server_recv->mhd_conn == mhd_connection);
+        MHD_suspend_connection (s->server_recv->mhd_conn);
+        s->server_recv->suspended = true;
+        if (NULL == s->recv_wakeup_task)
+          s->recv_wakeup_task
+           = GNUNET_SCHEDULER_add_delayed (delay,
+                                           &server_wake_up,
+                                           s);
       }
       return MHD_YES;
     }
@@ -1556,96 +1924,86 @@ server_access_cb (void *cls, struct MHD_Connection *mhd_connection,
  * @param httpSessionCache the pointer to distinguish
  */
 static void
-server_disconnect_cb (void *cls, struct MHD_Connection *connection,
+server_disconnect_cb (void *cls,
+                      struct MHD_Connection *connection,
                       void **httpSessionCache)
 {
   struct HTTP_Server_Plugin *plugin = cls;
-  struct ServerConnection *sc = *httpSessionCache;
-  struct Session *s = NULL;
-  struct Session *t = NULL;
-
-  GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG,
-                   plugin->name,
-                   "Disconnect for connection %p \n", sc);
-
-  if (sc == NULL)
-    return;
+  struct ServerRequest *sc = *httpSessionCache;
 
-  if (NULL == (s = server_lookup_session (plugin, sc)))
-    return;
-  for (t = plugin->head; t != NULL; t = t->next)
-    if (t == s)
-      break;
-  if (NULL == t)
+  LOG (GNUNET_ERROR_TYPE_DEBUG,
+       "Disconnect for connection %p\n",
+       sc);
+  if (NULL == sc)
+  {
+    /* CORS pre-flight request finished */
     return;
+  }
 
-  if (sc->direction == _SEND)
+  if (NULL != sc->session)
   {
-    GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, plugin->name,
-                     "Peer `%s' connection  %p, GET on address `%s' disconnected\n",
-                     GNUNET_i2s (&s->target), s->server_send,
-                     http_common_plugin_address_to_string (NULL,
-                                                           plugin->protocol,
-                                                           s->addr, s->addrlen));
-    s->server_send = NULL;
-    if (NULL != (s->server_recv))
+    if (sc->direction == _SEND)
     {
-      s->server_recv->disconnect = GNUNET_YES;
-      GNUNET_assert (NULL != s->server_recv->mhd_conn);
-#if MHD_VERSION >= 0x00090E00
-      MHD_set_connection_option (s->server_recv->mhd_conn, MHD_CONNECTION_OPTION_TIMEOUT,
-                                 1);
-#endif
-      server_reschedule (plugin, s->server_recv->mhd_daemon, GNUNET_NO);
+      LOG (GNUNET_ERROR_TYPE_DEBUG,
+           "Peer `%s' connection  %p, GET on address `%s' disconnected\n",
+           GNUNET_i2s (&sc->session->target),
+           sc->session->server_send,
+           http_common_plugin_address_to_string (plugin->protocol,
+               sc->session->address->address,
+               sc->session->address->address_length));
+
+      sc->session->server_send = NULL;
     }
-  }
-  if (sc->direction == _RECEIVE)
-  {
-    GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, plugin->name,
-                     "Peer `%s' connection %p PUT on address `%s' disconnected\n",
-                     GNUNET_i2s (&s->target), s->server_recv,
-                     http_common_plugin_address_to_string (NULL,
-                                                           plugin->protocol,
-                                                           s->addr, s->addrlen));
-    s->server_recv = NULL;
-    /* Do not terminate session when PUT disconnects
-    if (NULL != (s->server_send))
-    {
-        s->server_send->disconnect = GNUNET_YES;
-      GNUNET_assert (NULL != s->server_send->mhd_conn);
-#if MHD_VERSION >= 0x00090E00
-      MHD_set_connection_option (s->server_send->mhd_conn, MHD_CONNECTION_OPTION_TIMEOUT,
-                                 1);
-#endif
-      server_reschedule (plugin, s->server_send->mhd_daemon, GNUNET_NO);
-    }*/
-    if (s->msg_tk != NULL)
+    else if (sc->direction == _RECEIVE)
     {
-      GNUNET_SERVER_mst_destroy (s->msg_tk);
-      s->msg_tk = NULL;
+      LOG (GNUNET_ERROR_TYPE_DEBUG,
+           "Peer `%s' connection %p PUT on address `%s' disconnected\n",
+           GNUNET_i2s (&sc->session->target),
+           sc->session->server_recv,
+           http_common_plugin_address_to_string (plugin->protocol,
+               sc->session->address->address,
+               sc->session->address->address_length));
+      sc->session->server_recv = NULL;
+      if (NULL != sc->session->msg_tk)
+      {
+        GNUNET_MST_destroy (sc->session->msg_tk);
+        sc->session->msg_tk = NULL;
+      }
     }
   }
-
   GNUNET_free (sc);
-  plugin->cur_connections--;
+  plugin->cur_request--;
+}
 
-  if ((s->server_send == NULL) && (s->server_recv == NULL))
-  {
-    GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, plugin->name,
-                     "Peer `%s' on address `%s' disconnected\n",
-                     GNUNET_i2s (&s->target),
-                     http_common_plugin_address_to_string (NULL,
-                                                           plugin->protocol,
-                                                           s->addr, s->addrlen));
 
-    if ((GNUNET_YES == s->session_passed) && (GNUNET_NO == s->session_ended))
-    {
-        /* Notify transport immediately that this session is invalid */
-        s->session_ended = GNUNET_YES;
-        plugin->env->session_end (plugin->env->cls, &s->target, s);
-    }
-    server_delete_session (plugin, s);
-  }
+/**
+ * Callback from MHD when a connection starts/stops
+ *
+ * @param cls closure with the `struct HTTP_Server_Plugin *`
+ * @param connection connection handle
+ * @param socket_context socket-specific pointer
+ * @param toe reason for connection notification
+ * @see #MHD_OPTION_NOTIFY_CONNECTION
+ */
+static void
+server_connection_cb (void *cls,
+                      struct MHD_Connection *connection,
+                      void **socket_context,
+                      enum MHD_ConnectionNotificationCode toe)
+{
+  struct HTTP_Server_Plugin *plugin = cls;
+  const union MHD_ConnectionInfo *info;
+
+  if (MHD_CONNECTION_NOTIFY_STARTED == toe)
+    return;
+
+  /* Reschedule to remove closed socket from our select set */
+  info = MHD_get_connection_info (connection,
+                                  MHD_CONNECTION_INFO_DAEMON);
+  GNUNET_assert (NULL != info);
+  server_reschedule (plugin,
+                     info->daemon,
+                     GNUNET_YES);
 }
 
 
@@ -1654,194 +2012,56 @@ server_disconnect_cb (void *cls, struct MHD_Connection *connection,
  *
  * @param cls plugin as closure
  * @param addr address of incoming connection
- * @param addr_len address length of incoming connection
+ * @param addr_len number of bytes in @a addr
  * @return MHD_YES if connection is accepted, MHD_NO if connection is rejected
  */
 static int
-server_accept_cb (void *cls, const struct sockaddr *addr, socklen_t addr_len)
+server_accept_cb (void *cls,
+                  const struct sockaddr *addr,
+                  socklen_t addr_len)
 {
   struct HTTP_Server_Plugin *plugin = cls;
 
-  if (plugin->cur_connections <= plugin->max_connections)
+  if (plugin->cur_request <= plugin->max_request)
   {
-    GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, plugin->name,
-                     _("Accepting connection (%u of %u) from `%s'\n"),
-                     plugin->cur_connections, plugin->max_connections,
-                     GNUNET_a2s (addr, addr_len));
+    LOG (GNUNET_ERROR_TYPE_DEBUG,
+         _("Accepting connection (%u of %u) from `%s'\n"),
+         plugin->cur_request, plugin->max_request,
+         GNUNET_a2s (addr, addr_len));
     return MHD_YES;
   }
   else
   {
-    GNUNET_log_from (GNUNET_ERROR_TYPE_WARNING, plugin->name,
-                     _("Server reached maximum number connections (%u), rejecting new connection\n"),
-                     plugin->max_connections);
+    LOG (GNUNET_ERROR_TYPE_WARNING,
+         _("Server reached maximum number connections (%u), rejecting new connection\n"),
+         plugin->max_request);
     return MHD_NO;
   }
 }
 
 
-static void
-server_log (void *arg, const char *fmt, va_list ap)
-{
-  char text[1024];
-
-  vsnprintf (text, sizeof (text), fmt, ap);
-  va_end (ap);
-  GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Server: %s\n", text);
-}
-
-
-/**
- * Call MHD IPv4 to process pending requests and then go back
- * and schedule the next run.
- * @param cls plugin as closure
- * @param tc task context
- */
-static void
-server_v4_run (void *cls, const struct GNUNET_SCHEDULER_TaskContext *tc)
-{
-  struct HTTP_Server_Plugin *plugin = cls;
-
-  GNUNET_assert (cls != NULL);
-
-  plugin->server_v4_task = GNUNET_SCHEDULER_NO_TASK;
-  if (0 != (tc->reason & GNUNET_SCHEDULER_REASON_SHUTDOWN))
-    return;
-#if 0
-  GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, plugin->name,
-                   "Running IPv4 server\n");
-#endif
-  plugin->server_v4_immediately = GNUNET_NO;
-  GNUNET_assert (MHD_YES == MHD_run (plugin->server_v4));
-  server_reschedule (plugin, plugin->server_v4, GNUNET_NO);
-}
-
-
-/**
- * Call MHD IPv6 to process pending requests and then go back
- * and schedule the next run.
- * @param cls plugin as closure
- * @param tc task context
- */
-static void
-server_v6_run (void *cls, const struct GNUNET_SCHEDULER_TaskContext *tc)
-{
-  struct HTTP_Server_Plugin *plugin = cls;
-
-  GNUNET_assert (cls != NULL);
-  plugin->server_v6_task = GNUNET_SCHEDULER_NO_TASK;
-  if (0 != (tc->reason & GNUNET_SCHEDULER_REASON_SHUTDOWN))
-    return;
-#if 0
-  GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, plugin->name,
-                   "Running IPv6 server\n");
-#endif
-  plugin->server_v6_immediately = GNUNET_NO;
-  GNUNET_assert (MHD_YES == MHD_run (plugin->server_v6));
-  server_reschedule (plugin, plugin->server_v6, GNUNET_NO);
-}
-
-
 /**
- * Function that queries MHD's select sets and
- * starts the task waiting for them.
+ * Log function called by MHD.
  *
- * @param plugin plugin
- * @param daemon_handle the MHD daemon handle
- * @return gnunet task identifier
+ * @param arg NULL
+ * @param fmt format string
+ * @param ap arguments for the format string (va_start() and va_end()
+ *           will be called by MHD)
  */
-static GNUNET_SCHEDULER_TaskIdentifier
-server_schedule (struct HTTP_Server_Plugin *plugin,
-                 struct MHD_Daemon *daemon_handle,
-                 int now)
+static void
+server_log (void *arg,
+            const char *fmt,
+            va_list ap)
 {
-  GNUNET_SCHEDULER_TaskIdentifier ret;
-  fd_set rs;
-  fd_set ws;
-  fd_set es;
-  struct GNUNET_NETWORK_FDSet *wrs;
-  struct GNUNET_NETWORK_FDSet *wws;
-  struct GNUNET_NETWORK_FDSet *wes;
-  int max;
-  MHD_UNSIGNED_LONG_LONG timeout;
-  static unsigned long long last_timeout = 0;
-  int haveto;
-
-  struct GNUNET_TIME_Relative tv;
-
-  if (GNUNET_YES == plugin->in_shutdown)
-    return GNUNET_SCHEDULER_NO_TASK;
-
-  ret = GNUNET_SCHEDULER_NO_TASK;
-  FD_ZERO (&rs);
-  FD_ZERO (&ws);
-  FD_ZERO (&es);
-  wrs = GNUNET_NETWORK_fdset_create ();
-  wes = GNUNET_NETWORK_fdset_create ();
-  wws = GNUNET_NETWORK_fdset_create ();
-  max = -1;
-  GNUNET_assert (MHD_YES == MHD_get_fdset (daemon_handle, &rs, &ws, &es, &max));
-  haveto = MHD_get_timeout (daemon_handle, &timeout);
-  if (haveto == MHD_YES)
-  {
-    if (timeout != last_timeout)
-    {
-
-      GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, plugin->name,
-                       "SELECT Timeout changed from %llu to %llu (ms)\n",
-                       last_timeout, timeout);
-      last_timeout = timeout;
-    }
-    if (timeout <= GNUNET_TIME_UNIT_SECONDS.rel_value_us / 1000LL)
-      tv.rel_value_us = (uint64_t) timeout * 1000LL;
-    else
-      tv = GNUNET_TIME_UNIT_SECONDS;
-  }
-  else
-    tv = GNUNET_TIME_UNIT_SECONDS;
-  /* Force immediate run, since we have outbound data to send */
-  if (now == GNUNET_YES)
-    tv = GNUNET_TIME_UNIT_MILLISECONDS;
-  GNUNET_NETWORK_fdset_copy_native (wrs, &rs, max + 1);
-  GNUNET_NETWORK_fdset_copy_native (wws, &ws, max + 1);
-  GNUNET_NETWORK_fdset_copy_native (wes, &es, max + 1);
-
-  if (daemon_handle == plugin->server_v4)
-  {
-    if (plugin->server_v4_task != GNUNET_SCHEDULER_NO_TASK)
-    {
-      GNUNET_SCHEDULER_cancel (plugin->server_v4_task);
-      plugin->server_v4_task = GNUNET_SCHEDULER_NO_TASK;
-    }
-#if 0
-    GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, plugin->name,
-                     "Scheduling IPv4 server task in %llu ms\n", tv);
-#endif
-    ret =
-        GNUNET_SCHEDULER_add_select (GNUNET_SCHEDULER_PRIORITY_DEFAULT,
-                                     tv, wrs, wws,
-                                     &server_v4_run, plugin);
-  }
-  if (daemon_handle == plugin->server_v6)
-  {
-    if (plugin->server_v6_task != GNUNET_SCHEDULER_NO_TASK)
-    {
-      GNUNET_SCHEDULER_cancel (plugin->server_v6_task);
-      plugin->server_v6_task = GNUNET_SCHEDULER_NO_TASK;
-    }
-#if 0
-    GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, plugin->name,
-                     "Scheduling IPv6 server task in %llu ms\n", tv);
-#endif
-    ret =
-        GNUNET_SCHEDULER_add_select (GNUNET_SCHEDULER_PRIORITY_DEFAULT,
-                                     tv, wrs, wws,
-                                     &server_v6_run, plugin);
-  }
-  GNUNET_NETWORK_fdset_destroy (wrs);
-  GNUNET_NETWORK_fdset_destroy (wws);
-  GNUNET_NETWORK_fdset_destroy (wes);
-  return ret;
+  char text[1024];
+
+  vsnprintf (text,
+             sizeof (text),
+             fmt,
+             ap);
+  GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
+              "Server: %s\n",
+              text);
 }
 
 
@@ -1866,7 +2086,7 @@ server_load_file (const char *file)
   gn_file =
       GNUNET_DISK_file_open (file, GNUNET_DISK_OPEN_READ,
                              GNUNET_DISK_PERM_USER_READ);
-  if (gn_file == NULL)
+  if (NULL == gn_file)
   {
     GNUNET_free (text);
     return NULL;
@@ -1900,7 +2120,8 @@ server_load_certificate (struct HTTP_Server_Plugin *plugin)
 
 
   if (GNUNET_OK !=
-      GNUNET_CONFIGURATION_get_value_filename (plugin->env->cfg, plugin->name,
+      GNUNET_CONFIGURATION_get_value_filename (plugin->env->cfg,
+                                               plugin->name,
                                                "KEY_FILE", &key_file))
   {
     GNUNET_log_config_missing (GNUNET_ERROR_TYPE_ERROR,
@@ -1908,7 +2129,8 @@ server_load_certificate (struct HTTP_Server_Plugin *plugin)
     return GNUNET_SYSERR;
   }
   if (GNUNET_OK !=
-      GNUNET_CONFIGURATION_get_value_filename (plugin->env->cfg, plugin->name,
+      GNUNET_CONFIGURATION_get_value_filename (plugin->env->cfg,
+                                               plugin->name,
                                                "CERT_FILE", &cert_file))
   {
     GNUNET_log_config_missing (GNUNET_ERROR_TYPE_ERROR,
@@ -1923,12 +2145,12 @@ server_load_certificate (struct HTTP_Server_Plugin *plugin)
                                              plugin->name,
                                              "CRYPTO_INIT",
                                              &plugin->crypto_init))
-    GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, plugin->name,
-                     "Using crypto init string `%s'\n",
-                     plugin->crypto_init);
+    LOG (GNUNET_ERROR_TYPE_DEBUG,
+         "Using crypto init string `%s'\n",
+         plugin->crypto_init);
   else
-    GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, plugin->name,
-                     "Using default crypto init string \n");
+    LOG (GNUNET_ERROR_TYPE_DEBUG,
+         "Using default crypto init string \n");
 
   /* read key & certificates from file */
   GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
@@ -1951,15 +2173,17 @@ server_load_certificate (struct HTTP_Server_Plugin *plugin)
                 "No usable TLS certificate found, creating certificate\n");
     errno = 0;
     cert_creation =
-        GNUNET_OS_start_process (GNUNET_NO, GNUNET_OS_INHERIT_STD_OUT_AND_ERR, NULL, NULL,
+        GNUNET_OS_start_process (GNUNET_NO, GNUNET_OS_INHERIT_STD_OUT_AND_ERR,
+                                 NULL, NULL, NULL,
                                  "gnunet-transport-certificate-creation",
                                  "gnunet-transport-certificate-creation",
-                                 key_file, cert_file, NULL);
-    if (cert_creation == NULL)
+                                 key_file,
+                                 cert_file,
+                                 NULL);
+    if (NULL == cert_creation)
     {
-      GNUNET_log_from (GNUNET_ERROR_TYPE_ERROR, plugin->name,
-                       _
-                       ("Could not create a new TLS certificate, program `gnunet-transport-certificate-creation' could not be started!\n"));
+      LOG (GNUNET_ERROR_TYPE_ERROR,
+           _("Could not create a new TLS certificate, program `gnunet-transport-certificate-creation' could not be started!\n"));
       GNUNET_free (key_file);
       GNUNET_free (cert_file);
 
@@ -1981,10 +2205,9 @@ server_load_certificate (struct HTTP_Server_Plugin *plugin)
 
   if ((plugin->key == NULL) || (plugin->cert == NULL))
   {
-    GNUNET_log_from (GNUNET_ERROR_TYPE_ERROR,
-                     plugin->name,
-                     _("No usable TLS certificate found and creating one at `%s/%s' failed!\n"),
-                     key_file, cert_file);
+    LOG (GNUNET_ERROR_TYPE_ERROR,
+         _("No usable TLS certificate found and creating one at `%s/%s' failed!\n"),
+         key_file, cert_file);
     GNUNET_free (key_file);
     GNUNET_free (cert_file);
 
@@ -1999,196 +2222,193 @@ server_load_certificate (struct HTTP_Server_Plugin *plugin)
   }
   GNUNET_free (key_file);
   GNUNET_free (cert_file);
-  GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "TLS certificate loaded\n");
+  GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
+              "TLS certificate loaded\n");
   return res;
 }
 #endif
 
 
 /**
- * Start the HTTP server
+ * Invoke `MHD_start_daemon` with the various options we need to
+ * setup the HTTP server with the given listen address.
  *
- * @param plugin the plugin handle
- * @return GNUNET_OK on success, GNUNET_SYSERR on failure
+ * @param plugin our plugin
+ * @param addr listen address to use
+ * @param v6 MHD_NO_FLAG or MHD_USE_IPv6, depending on context
+ * @return NULL on error
  */
-static int
-server_start (struct HTTP_Server_Plugin *plugin)
+static struct MHD_Daemon *
+run_mhd_start_daemon (struct HTTP_Server_Plugin *plugin,
+                      const struct sockaddr_in *addr,
+                      int v6)
 {
+  struct MHD_Daemon *server;
   unsigned int timeout;
-  char *msg;
-  GNUNET_assert (NULL != plugin);
-
-#if BUILD_HTTPS
-  if (GNUNET_SYSERR == server_load_certificate (plugin))
-  {
-    GNUNET_log_from (GNUNET_ERROR_TYPE_ERROR, plugin->name,
-                     "Could not load or create server certificate! Loading plugin failed!\n");
-    return GNUNET_SYSERR;
-  }
-#endif
-
 
 #if MHD_VERSION >= 0x00090E00
   timeout = HTTP_SERVER_NOT_VALIDATED_TIMEOUT.rel_value_us / 1000LL / 1000LL;
-  GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, plugin->name,
-                   "MHD can set timeout per connection! Default time out %u sec.\n",
-                   timeout);
+  LOG (GNUNET_ERROR_TYPE_DEBUG,
+       "MHD can set timeout per connection! Default time out %u sec.\n",
+       timeout);
 #else
   timeout = HTTP_SERVER_SESSION_TIMEOUT.rel_value_us / 1000LL / 1000LL;
-  GNUNET_log_from (GNUNET_ERROR_TYPE_WARNING, plugin->name,
-                   "MHD cannot set timeout per connection! Default time out %u sec.\n",
-                   timeout);
+  LOG (GNUNET_ERROR_TYPE_WARNING,
+       "MHD cannot set timeout per connection! Default time out %u sec.\n",
+       timeout);
 #endif
-
-  plugin->server_v4 = NULL;
-  if (plugin->use_ipv4 == GNUNET_YES)
-  {
-    plugin->server_v4 = MHD_start_daemon (
+  server = MHD_start_daemon (
 #if VERBOSE_SERVER
-                                           MHD_USE_DEBUG |
+                             MHD_USE_DEBUG |
 #endif
 #if BUILD_HTTPS
-                                           MHD_USE_SSL |
+                             MHD_USE_SSL |
 #endif
-                                           MHD_NO_FLAG, plugin->port,
-                                           &server_accept_cb, plugin,
-                                           &server_access_cb, plugin,
-                                           MHD_OPTION_SOCK_ADDR,
-                                           (struct sockaddr_in *)
-                                           plugin->server_addr_v4,
-                                           MHD_OPTION_CONNECTION_LIMIT,
-                                           (unsigned int)
-                                           plugin->max_connections,
+                             MHD_USE_SUSPEND_RESUME |
+                             v6,
+                             plugin->port,
+                             &server_accept_cb, plugin,
+                             &server_access_cb, plugin,
+                             MHD_OPTION_SOCK_ADDR,
+                             addr,
+                             MHD_OPTION_CONNECTION_LIMIT,
+                             (unsigned int) plugin->max_request,
 #if BUILD_HTTPS
-                                           MHD_OPTION_HTTPS_PRIORITIES,
-                                           plugin->crypto_init,
-                                           MHD_OPTION_HTTPS_MEM_KEY,
-                                           plugin->key,
-                                           MHD_OPTION_HTTPS_MEM_CERT,
-                                           plugin->cert,
+                             MHD_OPTION_HTTPS_PRIORITIES,
+                             plugin->crypto_init,
+                             MHD_OPTION_HTTPS_MEM_KEY,
+                             plugin->key,
+                             MHD_OPTION_HTTPS_MEM_CERT,
+                             plugin->cert,
 #endif
-                                           MHD_OPTION_CONNECTION_TIMEOUT,
-                                           timeout,
-                                           MHD_OPTION_CONNECTION_MEMORY_LIMIT,
-                                           (size_t) (2 *
-                                                     GNUNET_SERVER_MAX_MESSAGE_SIZE),
-                                           MHD_OPTION_NOTIFY_COMPLETED,
-                                           &server_disconnect_cb, plugin,
-                                           MHD_OPTION_EXTERNAL_LOGGER,
-                                           server_log, NULL, MHD_OPTION_END);
-    if (plugin->server_v4 == NULL)
+                             MHD_OPTION_CONNECTION_TIMEOUT,
+                             timeout,
+                             MHD_OPTION_CONNECTION_MEMORY_LIMIT,
+                             (size_t) (2 *
+                                       GNUNET_MAX_MESSAGE_SIZE),
+                             MHD_OPTION_NOTIFY_COMPLETED,
+                             &server_disconnect_cb, plugin,
+                             MHD_OPTION_NOTIFY_CONNECTION,
+                             &server_connection_cb, plugin,
+                             MHD_OPTION_EXTERNAL_LOGGER,
+                             &server_log, NULL,
+                             MHD_OPTION_END);
+#ifdef TCP_STEALTH
+  if ( (NULL != server) &&
+       (0 != (plugin->options & HTTP_OPTIONS_TCP_STEALTH)) )
+  {
+    const union MHD_DaemonInfo *di;
+
+    di = MHD_get_daemon_info (server,
+                              MHD_DAEMON_INFO_LISTEN_FD,
+                              NULL);
+    if ( (0 != setsockopt ((int) di->listen_fd,
+                           IPPROTO_TCP,
+                           TCP_STEALTH,
+                           plugin->env->my_identity,
+                           sizeof (struct GNUNET_PeerIdentity))) )
     {
-      GNUNET_log_from (GNUNET_ERROR_TYPE_ERROR, plugin->name,
-                       "Failed to start %s IPv4 server component on port %u\n",
-                       plugin->name, plugin->port);
+      GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
+                  _("TCP_STEALTH not supported on this platform.\n"));
+      MHD_stop_daemon (server);
+      server = NULL;
     }
-    else
-       server_reschedule (plugin, plugin->server_v4, GNUNET_NO);
   }
+#endif
+  return server;
+}
 
 
-  plugin->server_v6 = NULL;
-  if (plugin->use_ipv6 == GNUNET_YES)
-  {
-    plugin->server_v6 = MHD_start_daemon (
-#if VERBOSE_SERVER
-                                           MHD_USE_DEBUG |
-#endif
-#if BUILD_HTTPS
-                                           MHD_USE_SSL |
-#endif
-                                           MHD_USE_IPv6, plugin->port,
-                                           &server_accept_cb, plugin,
-                                           &server_access_cb, plugin,
-                                           MHD_OPTION_SOCK_ADDR,
-                                           (struct sockaddr_in6 *)
-                                           plugin->server_addr_v6,
-                                           MHD_OPTION_CONNECTION_LIMIT,
-                                           (unsigned int)
-                                           plugin->max_connections,
-#if BUILD_HTTPS
-                                           MHD_OPTION_HTTPS_PRIORITIES,
-                                           plugin->crypto_init,
-                                           MHD_OPTION_HTTPS_MEM_KEY,
-                                           plugin->key,
-                                           MHD_OPTION_HTTPS_MEM_CERT,
-                                           plugin->cert,
-#endif
-                                           MHD_OPTION_CONNECTION_TIMEOUT,
-                                           timeout,
-                                           MHD_OPTION_CONNECTION_MEMORY_LIMIT,
-                                           (size_t) (2 *
-                                                     GNUNET_SERVER_MAX_MESSAGE_SIZE),
-                                           MHD_OPTION_NOTIFY_COMPLETED,
-                                           &server_disconnect_cb, plugin,
-                                           MHD_OPTION_EXTERNAL_LOGGER,
-                                           server_log, NULL, MHD_OPTION_END);
-    if (plugin->server_v6 == NULL)
-    {
-      GNUNET_log_from (GNUNET_ERROR_TYPE_ERROR, plugin->name,
-                       "Failed to start %s IPv6 server component on port %u\n",
-                       plugin->name, plugin->port);
-    }
-    else
-       server_reschedule (plugin, plugin->server_v6, GNUNET_NO);
-  }
+/**
+ * Start the HTTP server
+ *
+ * @param plugin the plugin handle
+ * @return #GNUNET_OK on success, #GNUNET_SYSERR on failure
+ */
+static int
+server_start (struct HTTP_Server_Plugin *plugin)
+{
+  const char *msg;
 
-       msg = "No";
-  if ((plugin->server_v6 == NULL) && (plugin->server_v4 == NULL))
+  GNUNET_assert (NULL != plugin);
+#if BUILD_HTTPS
+  if (GNUNET_SYSERR == server_load_certificate (plugin))
   {
-    GNUNET_log_from (GNUNET_ERROR_TYPE_ERROR, plugin->name,
-                     "%s %s server component started on port %u\n",
-                     msg, plugin->name, plugin->port);
-    sleep (10);
+    LOG (GNUNET_ERROR_TYPE_ERROR,
+         _("Could not load or create server certificate! Loading plugin failed!\n"));
     return GNUNET_SYSERR;
   }
-  else if ((plugin->server_v6 != NULL) && (plugin->server_v4 != NULL))
-       msg = "IPv4 and IPv6";
-  else if (plugin->server_v6 != NULL)
-       msg = "IPv6";
-  else if (plugin->server_v4 != NULL)
-       msg = "IPv4";
-  GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, plugin->name,
-                   "%s %s server component started on port %u\n",
-                   msg, plugin->name, plugin->port);
-  return GNUNET_OK;
-}
+#endif
 
 
-void
-server_stop (struct HTTP_Server_Plugin *plugin)
-{
-  if (plugin->server_v4 != NULL)
-  {
-    MHD_stop_daemon (plugin->server_v4);
-    plugin->server_v4 = NULL;
-  }
-  if ( plugin->server_v6 != NULL)
+
+  plugin->server_v4 = NULL;
+  if (GNUNET_YES == plugin->use_ipv4)
   {
-    MHD_stop_daemon (plugin->server_v6);
-    plugin->server_v6 = NULL;
+    plugin->server_v4
+      = run_mhd_start_daemon (plugin,
+                              (const struct sockaddr_in *) plugin->server_addr_v4,
+                              MHD_NO_FLAG);
+
+    if (NULL == plugin->server_v4)
+    {
+      LOG (GNUNET_ERROR_TYPE_ERROR,
+           "Failed to start %s IPv4 server component on port %u\n",
+           plugin->name,
+           plugin->port);
+    }
+    else
+      server_reschedule (plugin,
+                         plugin->server_v4,
+                         GNUNET_NO);
   }
 
 
-  if (plugin->server_v4_task != GNUNET_SCHEDULER_NO_TASK)
+  plugin->server_v6 = NULL;
+  if (GNUNET_YES == plugin->use_ipv6)
   {
-    GNUNET_SCHEDULER_cancel (plugin->server_v4_task);
-    plugin->server_v4_task = GNUNET_SCHEDULER_NO_TASK;
+    plugin->server_v6
+      = run_mhd_start_daemon (plugin,
+                              (const struct sockaddr_in *) plugin->server_addr_v6,
+                              MHD_USE_IPv6);
+    if (NULL == plugin->server_v6)
+    {
+      LOG (GNUNET_ERROR_TYPE_ERROR,
+           "Failed to start %s IPv6 server component on port %u\n",
+           plugin->name,
+           plugin->port);
+    }
+    else
+    {
+      server_reschedule (plugin,
+                         plugin->server_v6,
+                         GNUNET_NO);
+    }
   }
-
-  if (plugin->server_v6_task != GNUNET_SCHEDULER_NO_TASK)
+  msg = "No";
+  if ( (NULL == plugin->server_v6) &&
+       (NULL == plugin->server_v4) )
   {
-    GNUNET_SCHEDULER_cancel (plugin->server_v6_task);
-    plugin->server_v6_task = GNUNET_SCHEDULER_NO_TASK;
+    LOG (GNUNET_ERROR_TYPE_ERROR,
+         "%s %s server component started on port %u\n",
+         msg,
+         plugin->name,
+         plugin->port);
+    return GNUNET_SYSERR;
   }
-#if BUILD_HTTPS
-  GNUNET_free_non_null (plugin->crypto_init);
-  GNUNET_free_non_null (plugin->cert);
-  GNUNET_free_non_null (plugin->key);
-#endif
-
-  GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, plugin->name,
-                   "%s server component stopped\n", plugin->name);
+  if ((NULL != plugin->server_v6) &&
+      (NULL != plugin->server_v4))
+    msg = "IPv4 and IPv6";
+  else if (NULL != plugin->server_v6)
+    msg = "IPv6";
+  else if (NULL != plugin->server_v4)
+    msg = "IPv4";
+  LOG (GNUNET_ERROR_TYPE_DEBUG,
+       "%s %s server component started on port %u\n",
+       msg,
+       plugin->name,
+       plugin->port);
+  return GNUNET_OK;
 }
 
 
@@ -2196,19 +2416,24 @@ server_stop (struct HTTP_Server_Plugin *plugin)
  * Add an address to the server's set of addresses and notify transport
  *
  * @param cls the plugin handle
- * @param add_remove GNUNET_YES on add, GNUNET_NO on remove
+ * @param add_remove #GNUNET_YES on add, #GNUNET_NO on remove
  * @param addr the address
  * @param addrlen address length
  */
 static void
-server_add_address (void *cls, int add_remove, const struct sockaddr *addr,
-                 socklen_t addrlen)
+server_add_address (void *cls,
+                    int add_remove,
+                    const struct sockaddr *addr,
+                    socklen_t addrlen)
 {
   struct HTTP_Server_Plugin *plugin = cls;
+  struct GNUNET_HELLO_Address *address;
   struct HttpAddressWrapper *w = NULL;
 
-  w = GNUNET_malloc (sizeof (struct HttpAddressWrapper));
-  w->address = http_common_address_from_socket (plugin->protocol, addr, addrlen);
+  w = GNUNET_new (struct HttpAddressWrapper);
+  w->address = http_common_address_from_socket (plugin->protocol,
+                                                addr,
+                                                addrlen);
   if (NULL == w->address)
   {
     GNUNET_free (w);
@@ -2216,17 +2441,27 @@ server_add_address (void *cls, int add_remove, const struct sockaddr *addr,
   }
   w->addrlen = http_common_address_get_size (w->address);
 
-  GNUNET_CONTAINER_DLL_insert(plugin->addr_head, plugin->addr_tail, w);
-  GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, plugin->name,
-                   "Notifying transport to add address `%s'\n",
-                   http_common_plugin_address_to_string (NULL,
-                                                         plugin->protocol,
-                                                         w->address, w->addrlen));
+  GNUNET_CONTAINER_DLL_insert (plugin->addr_head,
+                               plugin->addr_tail,
+                               w);
+  LOG (GNUNET_ERROR_TYPE_DEBUG,
+       "Notifying transport to add address `%s'\n",
+       http_common_plugin_address_to_string (plugin->protocol,
+                                             w->address,
+                                             w->addrlen));
+  /* modify our published address list */
 #if BUILD_HTTPS
-  plugin->env->notify_address (plugin->env->cls, add_remove, w->address, w->addrlen, "https_client");
+  address = GNUNET_HELLO_address_allocate (plugin->env->my_identity,
+      "https_client", w->address, w->addrlen, GNUNET_HELLO_ADDRESS_INFO_NONE);
 #else
-  plugin->env->notify_address (plugin->env->cls, add_remove, w->address, w->addrlen, "http_client");
+  address = GNUNET_HELLO_address_allocate (plugin->env->my_identity,
+      "http_client", w->address, w->addrlen, GNUNET_HELLO_ADDRESS_INFO_NONE);
 #endif
+
+  plugin->env->notify_address (plugin->env->cls,
+                               add_remove,
+                               address);
+  GNUNET_HELLO_address_free (address);
 }
 
 
@@ -2234,44 +2469,62 @@ server_add_address (void *cls, int add_remove, const struct sockaddr *addr,
  * Remove an address from the server's set of addresses and notify transport
  *
  * @param cls the plugin handle
- * @param add_remove GNUNET_YES on add, GNUNET_NO on remove
+ * @param add_remove #GNUNET_YES on add, #GNUNET_NO on remove
  * @param addr the address
  * @param addrlen address length
  */
 static void
-server_remove_address (void *cls, int add_remove, const struct sockaddr *addr,
-                    socklen_t addrlen)
+server_remove_address (void *cls,
+                       int add_remove,
+                       const struct sockaddr *addr,
+                       socklen_t addrlen)
 {
   struct HTTP_Server_Plugin *plugin = cls;
+  struct GNUNET_HELLO_Address *address;
   struct HttpAddressWrapper *w = plugin->addr_head;
   size_t saddr_len;
-  void * saddr = http_common_address_from_socket (plugin->protocol, addr, addrlen);
+  void * saddr;
+
+  saddr = http_common_address_from_socket (plugin->protocol,
+                                           addr,
+                                           addrlen);
   if (NULL == saddr)
     return;
-  saddr_len =  http_common_address_get_size (saddr);
+  saddr_len = http_common_address_get_size (saddr);
 
   while (NULL != w)
   {
-      if (GNUNET_YES == http_common_cmp_addresses(w->address, w->addrlen, saddr, saddr_len))
-        break;
-      w = w->next;
+    if (GNUNET_YES ==
+        http_common_cmp_addresses (w->address,
+                                   w->addrlen,
+                                   saddr,
+                                   saddr_len))
+      break;
+    w = w->next;
   }
   GNUNET_free (saddr);
 
   if (NULL == w)
     return;
 
-  GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, plugin->name,
-                   "Notifying transport to remove address `%s'\n",
-                   http_common_plugin_address_to_string (NULL,
-                                                         plugin->protocol,
-                                                         w->address, w->addrlen));
-  GNUNET_CONTAINER_DLL_remove (plugin->addr_head, plugin->addr_tail, w);
+  LOG (GNUNET_ERROR_TYPE_DEBUG,
+       "Notifying transport to remove address `%s'\n",
+       http_common_plugin_address_to_string (plugin->protocol,
+                                             w->address,
+                                             w->addrlen));
+  GNUNET_CONTAINER_DLL_remove (plugin->addr_head,
+                               plugin->addr_tail,
+                               w);
+  /* modify our published address list */
 #if BUILD_HTTPS
-  plugin->env->notify_address (plugin->env->cls, add_remove, w->address, w->addrlen, "https_client");
+  address = GNUNET_HELLO_address_allocate (plugin->env->my_identity,
+      "https_client", w->address, w->addrlen, GNUNET_HELLO_ADDRESS_INFO_NONE);
 #else
-  plugin->env->notify_address (plugin->env->cls, add_remove, w->address, w->addrlen, "http_client");
+  address = GNUNET_HELLO_address_allocate (plugin->env->my_identity,
+      "http_client", w->address, w->addrlen, GNUNET_HELLO_ADDRESS_INFO_NONE);
 #endif
+  plugin->env->notify_address (plugin->env->cls, add_remove, address);
+  GNUNET_HELLO_address_free (address);
   GNUNET_free (w->address);
   GNUNET_free (w);
 }
@@ -2282,22 +2535,25 @@ server_remove_address (void *cls, int add_remove, const struct sockaddr *addr,
  * Our external IP address/port mapping has changed.
  *
  * @param cls closure, the 'struct LocalAddrList'
- * @param add_remove GNUNET_YES to mean the new public IP address, GNUNET_NO to mean
+ * @param add_remove #GNUNET_YES to mean the new public IP address, #GNUNET_NO to mean
  *     the previous (now invalid) one
+ * @param ac address class the address belongs to
  * @param addr either the previous or the new public IP address
  * @param addrlen actual lenght of the address
  */
 static void
-server_nat_port_map_callback (void *cls, int add_remove, const struct sockaddr *addr,
-                       socklen_t addrlen)
+server_nat_port_map_callback (void *cls,
+                              int add_remove,
+                             enum GNUNET_NAT_AddressClass ac,
+                              const struct sockaddr *addr,
+                              socklen_t addrlen)
 {
-  GNUNET_assert (cls != NULL);
   struct HTTP_Server_Plugin *plugin = cls;
 
-  GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, plugin->name,
-                   "NAT called to %s address `%s'\n",
-                   (add_remove == GNUNET_NO) ? "remove" : "add",
-                   GNUNET_a2s (addr, addrlen));
+  LOG (GNUNET_ERROR_TYPE_DEBUG,
+       "NAT called to %s address `%s'\n",
+       (add_remove == GNUNET_NO) ? "remove" : "add",
+       GNUNET_a2s (addr, addrlen));
 
   if (AF_INET == addr->sa_family)
   {
@@ -2308,11 +2564,12 @@ server_nat_port_map_callback (void *cls, int add_remove, const struct sockaddr *
 
     if ((NULL != plugin->server_addr_v4) &&
         (0 != memcmp (&plugin->server_addr_v4->sin_addr,
-                      &s4->sin_addr, sizeof (struct in_addr))))
+                      &s4->sin_addr,
+                     sizeof (struct in_addr))))
     {
-        GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, plugin->name,
-                         "Skipping address `%s' (not bindto address)\n",
-                         GNUNET_a2s (addr, addrlen));
+      LOG (GNUNET_ERROR_TYPE_DEBUG,
+           "Skipping address `%s' (not bindto address)\n",
+           GNUNET_a2s (addr, addrlen));
       return;
     }
   }
@@ -2327,10 +2584,10 @@ server_nat_port_map_callback (void *cls, int add_remove, const struct sockaddr *
         (0 != memcmp (&plugin->server_addr_v6->sin6_addr,
                       &s6->sin6_addr, sizeof (struct in6_addr))))
     {
-        GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, plugin->name,
-                         "Skipping address `%s' (not bindto address)\n",
-                         GNUNET_a2s (addr, addrlen));
-        return;
+      LOG (GNUNET_ERROR_TYPE_DEBUG,
+           "Skipping address `%s' (not bindto address)\n",
+           GNUNET_a2s (addr, addrlen));
+      return;
     }
   }
 
@@ -2360,7 +2617,8 @@ static int
 server_get_addresses (struct HTTP_Server_Plugin *plugin,
                       const char *service_name,
                       const struct GNUNET_CONFIGURATION_Handle *cfg,
-                      struct sockaddr ***addrs, socklen_t ** addr_lens)
+                      struct sockaddr ***addrs,
+                      socklen_t ** addr_lens)
 {
   int disablev6;
   unsigned long long port;
@@ -2389,20 +2647,20 @@ server_get_addresses (struct HTTP_Server_Plugin *plugin,
     if (port > 65535)
     {
       GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
-                  _
-                  ("Require valid port number for service in configuration!\n"));
+                  _("Require valid port number for service in configuration!\n"));
       return GNUNET_SYSERR;
     }
   }
   if (0 == port)
   {
-    GNUNET_log_from (GNUNET_ERROR_TYPE_INFO, plugin->name,
-                     "Starting in listen only mode\n");
+    LOG (GNUNET_ERROR_TYPE_INFO,
+         "Starting in listen only mode\n");
     return -1; /* listen only */
   }
 
 
-  if (GNUNET_CONFIGURATION_have_value (cfg, service_name, "BINDTO"))
+  if (GNUNET_CONFIGURATION_have_value (cfg, service_name,
+                                       "BINDTO"))
   {
     GNUNET_break (GNUNET_OK ==
                   GNUNET_CONFIGURATION_get_value_string (cfg, service_name,
@@ -2411,19 +2669,21 @@ server_get_addresses (struct HTTP_Server_Plugin *plugin,
   else
     hostname = NULL;
 
-  if (hostname != NULL)
+  if (NULL != hostname)
   {
-    GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, plugin->name,
-                     "Resolving `%s' since that is where `%s' will bind to.\n",
-                     hostname, service_name);
+    LOG (GNUNET_ERROR_TYPE_DEBUG,
+         "Resolving `%s' since that is where `%s' will bind to.\n",
+         hostname, service_name);
     memset (&hints, 0, sizeof (struct addrinfo));
     if (disablev6)
       hints.ai_family = AF_INET;
     if ((0 != (ret = getaddrinfo (hostname, NULL, &hints, &res))) ||
-        (res == NULL))
+        (NULL == res))
     {
-      GNUNET_log (GNUNET_ERROR_TYPE_ERROR, _("Failed to resolve `%s': %s\n"),
-                  hostname, gai_strerror (ret));
+      GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
+                  _("Failed to resolve `%s': %s\n"),
+                  hostname,
+                  gai_strerror (ret));
       GNUNET_free (hostname);
       return GNUNET_SYSERR;
     }
@@ -2455,19 +2715,20 @@ server_get_addresses (struct HTTP_Server_Plugin *plugin,
       next = pos->ai_next;
       if ((disablev6) && (pos->ai_family == AF_INET6))
         continue;
-      if ((pos->ai_protocol != IPPROTO_TCP) && (pos->ai_protocol != 0))
+      if ((pos->ai_protocol != IPPROTO_TCP) && (0 != pos->ai_protocol))
         continue;               /* not TCP */
-      if ((pos->ai_socktype != SOCK_STREAM) && (pos->ai_socktype != 0))
+      if ((pos->ai_socktype != SOCK_STREAM) && (0 != pos->ai_socktype))
         continue;               /* huh? */
-      GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, plugin->name,
-                       "Service will bind to `%s'\n", GNUNET_a2s (pos->ai_addr,
-                                                                  pos->ai_addrlen));
+      LOG (GNUNET_ERROR_TYPE_DEBUG,
+           "Service will bind to `%s'\n",
+           GNUNET_a2s (pos->ai_addr,
+                       pos->ai_addrlen));
       if (pos->ai_family == AF_INET)
       {
         GNUNET_assert (pos->ai_addrlen == sizeof (struct sockaddr_in));
         saddrlens[i] = pos->ai_addrlen;
         saddrs[i] = GNUNET_malloc (saddrlens[i]);
-        memcpy (saddrs[i], pos->ai_addr, saddrlens[i]);
+        GNUNET_memcpy (saddrs[i], pos->ai_addr, saddrlens[i]);
         ((struct sockaddr_in *) saddrs[i])->sin_port = htons (port);
       }
       else
@@ -2476,7 +2737,7 @@ server_get_addresses (struct HTTP_Server_Plugin *plugin,
         GNUNET_assert (pos->ai_addrlen == sizeof (struct sockaddr_in6));
         saddrlens[i] = pos->ai_addrlen;
         saddrs[i] = GNUNET_malloc (saddrlens[i]);
-        memcpy (saddrs[i], pos->ai_addr, saddrlens[i]);
+        GNUNET_memcpy (saddrs[i], pos->ai_addr, saddrlens[i]);
         ((struct sockaddr_in6 *) saddrs[i])->sin6_port = htons (port);
       }
       i++;
@@ -2547,10 +2808,12 @@ server_start_report_addresses (struct HTTP_Server_Plugin *plugin)
   socklen_t *addrlens;
 
   res = server_get_addresses (plugin,
-                              plugin->name, plugin->env->cfg,
+                              plugin->name,
+                              plugin->env->cfg,
                               &addrs, &addrlens);
-  GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, plugin->name,
-                   _("Found %u addresses to report to NAT service\n"), res);
+  LOG (GNUNET_ERROR_TYPE_DEBUG,
+       _("Found %u addresses to report to NAT service\n"),
+       res);
 
   if (GNUNET_SYSERR == res)
   {
@@ -2558,15 +2821,20 @@ server_start_report_addresses (struct HTTP_Server_Plugin *plugin)
     return;
   }
 
-  plugin->nat =
-      GNUNET_NAT_register (plugin->env->cfg, GNUNET_YES, plugin->port,
+  plugin->nat
+    = GNUNET_NAT_register (plugin->env->cfg,
+                          "transport-http_server",
+                          IPPROTO_TCP,
                            (unsigned int) res,
-                           (const struct sockaddr **) addrs, addrlens,
-                           &server_nat_port_map_callback, NULL, plugin);
+                           (const struct sockaddr **) addrs,
+                          addrlens,
+                           &server_nat_port_map_callback,
+                          NULL,
+                          plugin);
   while (res > 0)
   {
     res--;
-    GNUNET_assert (addrs[res] != NULL);
+    GNUNET_assert (NULL != addrs[res]);
     GNUNET_free (addrs[res]);
   }
   GNUNET_free_non_null (addrs);
@@ -2582,17 +2850,21 @@ server_start_report_addresses (struct HTTP_Server_Plugin *plugin)
 static void
 server_stop_report_addresses (struct HTTP_Server_Plugin *plugin)
 {
+  struct HttpAddressWrapper *w;
+
   /* Stop NAT handle */
   if (NULL != plugin->nat)
+  {
     GNUNET_NAT_unregister (plugin->nat);
-
+    plugin->nat = NULL;
+  }
   /* Clean up addresses */
-  struct HttpAddressWrapper *w;
-
-  while (plugin->addr_head != NULL)
+  while (NULL != plugin->addr_head)
   {
     w = plugin->addr_head;
-    GNUNET_CONTAINER_DLL_remove (plugin->addr_head, plugin->addr_tail, w);
+    GNUNET_CONTAINER_DLL_remove (plugin->addr_head,
+                                 plugin->addr_tail,
+                                 w);
     GNUNET_free (w->address);
     GNUNET_free (w);
   }
@@ -2603,7 +2875,7 @@ server_stop_report_addresses (struct HTTP_Server_Plugin *plugin)
  * Check if IPv6 supported on this system
  *
  * @param plugin the plugin handle
- * @return GNUNET_YES on success, else GNUNET_NO
+ * @return #GNUNET_YES on success, else #GNUNET_NO
  */
 static int
 server_check_ipv6_support (struct HTTP_Server_Plugin *plugin)
@@ -2612,28 +2884,33 @@ server_check_ipv6_support (struct HTTP_Server_Plugin *plugin)
   int res = GNUNET_NO;
 
   /* Probe IPv6 support */
-  desc = GNUNET_NETWORK_socket_create (PF_INET6, SOCK_STREAM, 0);
+  desc = GNUNET_NETWORK_socket_create (PF_INET6,
+                                      SOCK_STREAM,
+                                      0);
   if (NULL == desc)
   {
-    if ((errno == ENOBUFS) || (errno == ENOMEM) || (errno == ENFILE) ||
-        (errno == EACCES))
+    if ( (errno == ENOBUFS) ||
+        (errno == ENOMEM) ||
+        (errno == ENFILE) ||
+        (errno == EACCES) )
     {
-      GNUNET_log_strerror (GNUNET_ERROR_TYPE_ERROR, "socket");
+      GNUNET_log_strerror (GNUNET_ERROR_TYPE_ERROR,
+                          "socket");
     }
-    GNUNET_log_from (GNUNET_ERROR_TYPE_WARNING, plugin->name,
-                     _
-                     ("Disabling IPv6 since it is not supported on this system!\n"));
+    LOG (GNUNET_ERROR_TYPE_WARNING,
+         _("Disabling IPv6 since it is not supported on this system!\n"));
     res = GNUNET_NO;
   }
   else
   {
-    GNUNET_break (GNUNET_OK == GNUNET_NETWORK_socket_close (desc));
+    GNUNET_break (GNUNET_OK ==
+                 GNUNET_NETWORK_socket_close (desc));
     desc = NULL;
     res = GNUNET_YES;
   }
-  GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, plugin->name,
-                   "Testing IPv6 on this system: %s\n",
-                   (res == GNUNET_YES) ? "successful" : "failed");
+  LOG (GNUNET_ERROR_TYPE_DEBUG,
+       "Testing IPv6 on this system: %s\n",
+       (res == GNUNET_YES) ? "successful" : "failed");
   return res;
 }
 
@@ -2642,42 +2919,59 @@ server_check_ipv6_support (struct HTTP_Server_Plugin *plugin)
  * Notify server about our external hostname
  *
  * @param cls plugin
- * @param tc task context (unused)
  */
 static void
-server_notify_external_hostname (void *cls, const struct GNUNET_SCHEDULER_TaskContext *tc)
+server_notify_external_hostname (void *cls)
 {
   struct HTTP_Server_Plugin *plugin = cls;
+  struct HttpAddress *ext_addr;
+  size_t ext_addr_len;
   unsigned int urlen;
   char *url;
 
-  plugin->notify_ext_task = GNUNET_SCHEDULER_NO_TASK;
-  if (0 != (tc->reason & GNUNET_SCHEDULER_REASON_SHUTDOWN))
-    return;
-
-  GNUNET_asprintf(&url, "%s://%s", plugin->protocol, plugin->external_hostname);
-
+  plugin->notify_ext_task = NULL;
+  GNUNET_asprintf (&url,
+                  "%s://%s",
+                  plugin->protocol,
+                  plugin->external_hostname);
   urlen = strlen (url) + 1;
-  plugin->ext_addr = GNUNET_malloc (sizeof (struct HttpAddress) + urlen);
-  plugin->ext_addr->options = htonl(plugin->options);
-  plugin->ext_addr->urlen = htonl (urlen);
-  plugin->ext_addr_len = sizeof (struct HttpAddress) + urlen;
-  memcpy (&plugin->ext_addr[1], url, urlen);
+  ext_addr = GNUNET_malloc (sizeof (struct HttpAddress) + urlen);
+  ext_addr->options = htonl (plugin->options);
+  ext_addr->urlen = htonl (urlen);
+  ext_addr_len = sizeof (struct HttpAddress) + urlen;
+  GNUNET_memcpy (&ext_addr[1], url, urlen);
   GNUNET_free (url);
-  GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, plugin->name,
-                   "Notifying transport about external hostname address `%s'\n", plugin->external_hostname);
+
+  LOG (GNUNET_ERROR_TYPE_DEBUG,
+       "Notifying transport about external hostname address `%s'\n",
+       plugin->external_hostname);
 
 #if BUILD_HTTPS
   if (GNUNET_YES == plugin->verify_external_hostname)
-    GNUNET_log_from (GNUNET_ERROR_TYPE_INFO, plugin->name,
-                     "Enabling SSL verification for external hostname address `%s'\n", plugin->external_hostname);
-  plugin->env->notify_address (plugin->env->cls, GNUNET_YES,
-                               plugin->ext_addr, plugin->ext_addr_len,
-                               "https_client");
+    LOG (GNUNET_ERROR_TYPE_INFO,
+         "Enabling SSL verification for external hostname address `%s'\n",
+         plugin->external_hostname);
+  plugin->ext_addr
+    = GNUNET_HELLO_address_allocate (plugin->env->my_identity,
+                                    "https_client",
+                                    ext_addr,
+                                    ext_addr_len,
+                                    GNUNET_HELLO_ADDRESS_INFO_NONE);
+  plugin->env->notify_address (plugin->env->cls,
+                              GNUNET_YES,
+                              plugin->ext_addr);
+  GNUNET_free (ext_addr);
 #else
-  plugin->env->notify_address (plugin->env->cls, GNUNET_YES,
-                               plugin->ext_addr, plugin->ext_addr_len,
-                               "http_client");
+  plugin->ext_addr
+    = GNUNET_HELLO_address_allocate (plugin->env->my_identity,
+                                    "http_client",
+                                    ext_addr,
+                                    ext_addr_len,
+                                    GNUNET_HELLO_ADDRESS_INFO_NONE);
+  plugin->env->notify_address (plugin->env->cls,
+                              GNUNET_YES,
+                              plugin->ext_addr);
+  GNUNET_free (ext_addr);
 #endif
 }
 
@@ -2686,7 +2980,7 @@ server_notify_external_hostname (void *cls, const struct GNUNET_SCHEDULER_TaskCo
  * Configure the plugin
  *
  * @param plugin plugin handle
- * @return GNUNET_OK on success, GNUNET_SYSERR on failure
+ * @return #GNUNET_OK on success, #GNUNET_SYSERR on failure
  */
 static int
 server_configure_plugin (struct HTTP_Server_Plugin *plugin)
@@ -2703,68 +2997,72 @@ server_configure_plugin (struct HTTP_Server_Plugin *plugin)
       (plugin->env->cfg, plugin->name, "USE_IPv4"))
   {
     plugin->use_ipv4 =
-        GNUNET_CONFIGURATION_get_value_yesno (plugin->env->cfg, plugin->name,
+        GNUNET_CONFIGURATION_get_value_yesno (plugin->env->cfg,
+                                              plugin->name,
                                               "USE_IPv4");
   }
   else
     plugin->use_ipv4 = GNUNET_YES;
-  GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, plugin->name,
-                   _("IPv4 support is %s\n"),
-                   (plugin->use_ipv4 == GNUNET_YES) ? "enabled" : "disabled");
+  LOG (GNUNET_ERROR_TYPE_DEBUG,
+       _("IPv4 support is %s\n"),
+       (plugin->use_ipv4 == GNUNET_YES) ? "enabled" : "disabled");
 
   /* Use IPv6? */
   if (GNUNET_CONFIGURATION_have_value
       (plugin->env->cfg, plugin->name, "USE_IPv6"))
   {
     plugin->use_ipv6 =
-        GNUNET_CONFIGURATION_get_value_yesno (plugin->env->cfg, plugin->name,
+        GNUNET_CONFIGURATION_get_value_yesno (plugin->env->cfg,
+                                              plugin->name,
                                               "USE_IPv6");
   }
   else
     plugin->use_ipv6 = GNUNET_YES;
-  GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, plugin->name,
-                   _("IPv6 support is %s\n"),
-                   (plugin->use_ipv6 == GNUNET_YES) ? "enabled" : "disabled");
+  LOG (GNUNET_ERROR_TYPE_DEBUG,
+       _("IPv6 support is %s\n"),
+       (plugin->use_ipv6 == GNUNET_YES) ? "enabled" : "disabled");
 
   if ((plugin->use_ipv4 == GNUNET_NO) && (plugin->use_ipv6 == GNUNET_NO))
   {
-    GNUNET_log_from (GNUNET_ERROR_TYPE_ERROR, plugin->name,
-                     _
-                     ("Neither IPv4 nor IPv6 are enabled! Fix in configuration\n"),
-                     plugin->name);
+    LOG (GNUNET_ERROR_TYPE_ERROR,
+         _("Neither IPv4 nor IPv6 are enabled! Fix in configuration\n"));
     return GNUNET_SYSERR;
   }
 
   /* Reading port number from config file */
   if ((GNUNET_OK !=
-       GNUNET_CONFIGURATION_get_value_number (plugin->env->cfg, plugin->name,
+       GNUNET_CONFIGURATION_get_value_number (plugin->env->cfg,
+                                              plugin->name,
                                               "PORT", &port)) || (port > 65535))
   {
-    GNUNET_log_from (GNUNET_ERROR_TYPE_ERROR, plugin->name,
-                     _("Port is required! Fix in configuration\n"),
-                     plugin->name);
+    LOG (GNUNET_ERROR_TYPE_ERROR,
+         _("Port is required! Fix in configuration\n"));
     return GNUNET_SYSERR;
   }
   plugin->port = port;
 
-  GNUNET_log_from (GNUNET_ERROR_TYPE_INFO, plugin->name,
-                   _("Using port %u\n"), plugin->port);
-
-  if ((plugin->use_ipv4 == GNUNET_YES) &&
-      (GNUNET_YES == GNUNET_CONFIGURATION_get_value_string (plugin->env->cfg,
-                          plugin->name, "BINDTO", &bind4_address)))
-  {
-    GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, plugin->name,
-                     "Binding %s plugin to specific IPv4 address: `%s'\n",
-                     plugin->protocol, bind4_address);
-    plugin->server_addr_v4 = GNUNET_malloc (sizeof (struct sockaddr_in));
-    if (1 != inet_pton (AF_INET, bind4_address,
+  LOG (GNUNET_ERROR_TYPE_INFO,
+       _("Using port %u\n"), plugin->port);
+
+  if ( (plugin->use_ipv4 == GNUNET_YES) &&
+       (GNUNET_YES ==
+       GNUNET_CONFIGURATION_get_value_string (plugin->env->cfg,
+                                              plugin->name,
+                                              "BINDTO",
+                                              &bind4_address)))
+  {
+    LOG (GNUNET_ERROR_TYPE_DEBUG,
+         "Binding %s plugin to specific IPv4 address: `%s'\n",
+         plugin->protocol,
+        bind4_address);
+    plugin->server_addr_v4 = GNUNET_new (struct sockaddr_in);
+    if (1 != inet_pton (AF_INET,
+                       bind4_address,
                         &plugin->server_addr_v4->sin_addr))
     {
-        GNUNET_log_from (GNUNET_ERROR_TYPE_ERROR, plugin->name,
-                         _
-                         ("Specific IPv4 address `%s' in configuration file is invalid!\n"),
-                         bind4_address);
+      LOG (GNUNET_ERROR_TYPE_ERROR,
+           _("Specific IPv4 address `%s' in configuration file is invalid!\n"),
+           bind4_address);
       GNUNET_free (bind4_address);
       GNUNET_free (plugin->server_addr_v4);
       plugin->server_addr_v4 = NULL;
@@ -2772,8 +3070,9 @@ server_configure_plugin (struct HTTP_Server_Plugin *plugin)
     }
     else
     {
-      GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, plugin->name,
-                         _("Binding to IPv4 address %s\n"), bind4_address);
+      LOG (GNUNET_ERROR_TYPE_DEBUG,
+           "Binding to IPv4 address %s\n",
+           bind4_address);
       plugin->server_addr_v4->sin_family = AF_INET;
       plugin->server_addr_v4->sin_port = htons (plugin->port);
     }
@@ -2782,20 +3081,23 @@ server_configure_plugin (struct HTTP_Server_Plugin *plugin)
 
   if ((plugin->use_ipv6 == GNUNET_YES) &&
       (GNUNET_YES ==
-       GNUNET_CONFIGURATION_get_value_string (plugin->env->cfg, plugin->name,
-                                              "BINDTO6", &bind6_address)))
-  {
-    GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, plugin->name,
-                     "Binding %s plugin to specific IPv6 address: `%s'\n",
-                     plugin->protocol, bind6_address);
-    plugin->server_addr_v6 = GNUNET_malloc (sizeof (struct sockaddr_in6));
+       GNUNET_CONFIGURATION_get_value_string (plugin->env->cfg,
+                                              plugin->name,
+                                              "BINDTO6",
+                                             &bind6_address)))
+  {
+    LOG (GNUNET_ERROR_TYPE_DEBUG,
+         "Binding %s plugin to specific IPv6 address: `%s'\n",
+         plugin->protocol, bind6_address);
+    plugin->server_addr_v6 = GNUNET_new (struct sockaddr_in6);
     if (1 !=
-        inet_pton (AF_INET6, bind6_address, &plugin->server_addr_v6->sin6_addr))
+        inet_pton (AF_INET6,
+                  bind6_address,
+                  &plugin->server_addr_v6->sin6_addr))
     {
-      GNUNET_log_from (GNUNET_ERROR_TYPE_ERROR, plugin->name,
-                       _
-                       ("Specific IPv6 address `%s' in configuration file is invalid!\n"),
-                       bind6_address);
+      LOG (GNUNET_ERROR_TYPE_ERROR,
+           _("Specific IPv6 address `%s' in configuration file is invalid!\n"),
+           bind6_address);
       GNUNET_free (bind6_address);
       GNUNET_free (plugin->server_addr_v6);
       plugin->server_addr_v6 = NULL;
@@ -2803,8 +3105,9 @@ server_configure_plugin (struct HTTP_Server_Plugin *plugin)
     }
     else
     {
-      GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, plugin->name,
-                         _("Binding to IPv6 address %s\n"), bind6_address);
+      LOG (GNUNET_ERROR_TYPE_DEBUG,
+           "Binding to IPv6 address %s\n",
+           bind6_address);
       plugin->server_addr_v6->sin6_family = AF_INET6;
       plugin->server_addr_v6->sin6_port = htons (plugin->port);
     }
@@ -2813,82 +3116,101 @@ server_configure_plugin (struct HTTP_Server_Plugin *plugin)
 
   plugin->verify_external_hostname = GNUNET_NO;
 #if BUILD_HTTPS
-  plugin->verify_external_hostname = GNUNET_CONFIGURATION_get_value_yesno (plugin->env->cfg, plugin->name,
-                                                                                                                                                               "VERIFY_EXTERNAL_HOSTNAME");
+  plugin->verify_external_hostname
+    = GNUNET_CONFIGURATION_get_value_yesno (plugin->env->cfg,
+                                           plugin->name,
+                                           "VERIFY_EXTERNAL_HOSTNAME");
   if (GNUNET_SYSERR == plugin->verify_external_hostname)
        plugin->verify_external_hostname = GNUNET_NO;
   if (GNUNET_YES == plugin->verify_external_hostname)
        plugin->options |= HTTP_OPTIONS_VERIFY_CERTIFICATE;
 #endif
-  external_hostname_use_port = GNUNET_CONFIGURATION_get_value_yesno (plugin->env->cfg, plugin->name,
-                                                                                                                                                               "EXTERNAL_HOSTNAME_USE_PORT");
+  external_hostname_use_port
+    = GNUNET_CONFIGURATION_get_value_yesno (plugin->env->cfg,
+                                           plugin->name,
+                                           "EXTERNAL_HOSTNAME_USE_PORT");
   if (GNUNET_SYSERR == external_hostname_use_port)
        external_hostname_use_port = GNUNET_NO;
 
 
-  if (GNUNET_YES == GNUNET_CONFIGURATION_get_value_string (plugin->env->cfg, plugin->name,
-                                              "EXTERNAL_HOSTNAME", &eh_tmp))
+  if (GNUNET_YES ==
+      GNUNET_CONFIGURATION_get_value_string (plugin->env->cfg,
+                                             plugin->name,
+                                             "EXTERNAL_HOSTNAME",
+                                             &eh_tmp))
   {
-      char * tmp = NULL;
-      char * pos = NULL;
-      char * pos_url = NULL;
-
-      if (NULL != strstr(eh_tmp, "://"))
-      {
-          tmp = &strstr(eh_tmp, "://")[3];
-      }
-      else
-               tmp = eh_tmp;
+    char *tmp;
+    char *pos = NULL;
+    char *pos_url = NULL;
 
-      if (GNUNET_YES == external_hostname_use_port)
-      {
-        if ( (strlen (tmp) > 1) && (NULL != (pos = strchr(tmp, '/'))) )
-        {
-               pos_url = pos + 1;
-               pos[0] = '\0';
-               GNUNET_asprintf (&plugin->external_hostname, "%s:%u/%s", tmp, (uint16_t) port, (NULL == pos_url) ? "" : pos_url);
-        }
-        else
-               GNUNET_asprintf (&plugin->external_hostname, "%s:%u", tmp, (uint16_t) port);
-      }
-      else
-       plugin->external_hostname = GNUNET_strdup (tmp);
-      GNUNET_free (eh_tmp);
-
-      GNUNET_log_from (GNUNET_ERROR_TYPE_INFO, plugin->name,
-                       _("Using external hostname `%s'\n"), plugin->external_hostname);
-      plugin->notify_ext_task = GNUNET_SCHEDULER_add_now (&server_notify_external_hostname, plugin);
+    if (NULL != strstr(eh_tmp, "://"))
+      tmp = &strstr(eh_tmp, "://")[3];
+    else
+      tmp = eh_tmp;
 
-      /* Use only configured external hostname */
-      if (GNUNET_CONFIGURATION_have_value
-          (plugin->env->cfg, plugin->name, "EXTERNAL_HOSTNAME_ONLY"))
+    if (GNUNET_YES == external_hostname_use_port)
+    {
+      if ( (strlen (tmp) > 1) && (NULL != (pos = strchr(tmp, '/'))) )
       {
-        plugin->external_only =
-            GNUNET_CONFIGURATION_get_value_yesno (plugin->env->cfg, plugin->name,
-                                                  "EXTERNAL_HOSTNAME_ONLY");
+        pos_url = pos + 1;
+        pos[0] = '\0';
+        GNUNET_asprintf (&plugin->external_hostname,
+                         "%s:%u/%s",
+                         tmp,
+                         (uint16_t) port,
+                         pos_url);
       }
       else
-        plugin->external_only = GNUNET_NO;
+        GNUNET_asprintf (&plugin->external_hostname,
+                         "%s:%u",
+                         tmp,
+                         (uint16_t) port);
+    }
+    else
+      plugin->external_hostname = GNUNET_strdup (tmp);
+    GNUNET_free (eh_tmp);
+
+    LOG (GNUNET_ERROR_TYPE_INFO,
+         _("Using external hostname `%s'\n"),
+         plugin->external_hostname);
+    plugin->notify_ext_task = GNUNET_SCHEDULER_add_now (&server_notify_external_hostname,
+                                                        plugin);
+
+    /* Use only configured external hostname */
+    if (GNUNET_CONFIGURATION_have_value
+        (plugin->env->cfg,
+         plugin->name,
+         "EXTERNAL_HOSTNAME_ONLY"))
+    {
+      plugin->external_only =
+        GNUNET_CONFIGURATION_get_value_yesno (plugin->env->cfg,
+                                              plugin->name,
+                                              "EXTERNAL_HOSTNAME_ONLY");
+    }
+    else
+      plugin->external_only = GNUNET_NO;
 
-      if (GNUNET_YES == plugin->external_only)
-        GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, plugin->name,
-                         _("Notifying transport only about hostname `%s'\n"), plugin->external_hostname);
+    if (GNUNET_YES == plugin->external_only)
+      LOG (GNUNET_ERROR_TYPE_DEBUG,
+           _("Notifying transport only about hostname `%s'\n"),
+           plugin->external_hostname);
   }
   else
-    GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, plugin->name,
-                     "No external hostname configured\n");
+    LOG (GNUNET_ERROR_TYPE_DEBUG,
+         "No external hostname configured\n");
 
   /* Optional parameters */
-  if (GNUNET_OK != GNUNET_CONFIGURATION_get_value_number (plugin->env->cfg,
-                      plugin->name,
-                      "MAX_CONNECTIONS", &max_connections))
+  if (GNUNET_OK !=
+      GNUNET_CONFIGURATION_get_value_number (plugin->env->cfg,
+                                             plugin->name,
+                                             "MAX_CONNECTIONS",
+                                             &max_connections))
     max_connections = 128;
-  plugin->max_connections = max_connections;
-
-  GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, plugin->name,
-                   _("Maximum number of connections is %u\n"),
-                   plugin->max_connections);
+  plugin->max_request = max_connections;
 
+  LOG (GNUNET_ERROR_TYPE_DEBUG,
+       _("Maximum number of connections is %u\n"),
+       plugin->max_request);
 
   plugin->peer_id_length = strlen (GNUNET_i2s_full (plugin->env->my_identity));
 
@@ -2896,74 +3218,6 @@ server_configure_plugin (struct HTTP_Server_Plugin *plugin)
 }
 
 
-/**
- * Session was idle, so disconnect it
- *
- * @param cls the session
- * @param tc task context
- */
-static void
-server_session_timeout (void *cls, const struct GNUNET_SCHEDULER_TaskContext *tc)
-{
-  struct Session *s = cls;
-
-  s->timeout_task = GNUNET_SCHEDULER_NO_TASK;
-  GNUNET_log (TIMEOUT_LOG,
-              "Session %p was idle for %s, disconnecting\n",
-              s,
-             GNUNET_STRINGS_relative_time_to_string (HTTP_SERVER_SESSION_TIMEOUT,
-                                                     GNUNET_YES));
-
-  /* call session destroy function */
-  GNUNET_assert (GNUNET_OK ==
-                 http_server_plugin_disconnect_session (s->plugin, s));
-}
-
-
-/**
-* Start session timeout for session s
-*
-* @param s the session
-*/
-static void
-server_start_session_timeout (struct Session *s)
-{
- GNUNET_assert (NULL != s);
- GNUNET_assert (GNUNET_SCHEDULER_NO_TASK == s->timeout_task);
- s->timeout_task =  GNUNET_SCHEDULER_add_delayed (HTTP_SERVER_SESSION_TIMEOUT,
-                                                  &server_session_timeout,
-                                                  s);
- GNUNET_log (TIMEOUT_LOG,
-             "Timeout for session %p set to %s\n",
-             s,
-            GNUNET_STRINGS_relative_time_to_string (HTTP_SERVER_SESSION_TIMEOUT,
-                                                    GNUNET_YES));
-}
-
-
-/**
-* Increment session timeout due to activity session s
-*
-* @param s the session
-*/
-static void
-server_reschedule_session_timeout (struct Session *s)
-{
- GNUNET_assert (NULL != s);
- GNUNET_assert (GNUNET_SCHEDULER_NO_TASK != s->timeout_task);
-
- GNUNET_SCHEDULER_cancel (s->timeout_task);
- s->timeout_task =  GNUNET_SCHEDULER_add_delayed (HTTP_SERVER_SESSION_TIMEOUT,
-                                                  &server_session_timeout,
-                                                  s);
- GNUNET_log (TIMEOUT_LOG,
-             "Timeout rescheduled for session %p set to %s\n",
-             s,
-            GNUNET_STRINGS_relative_time_to_string (HTTP_SERVER_SESSION_TIMEOUT,
-                                                    GNUNET_YES));
-}
-
-
 /**
  * Exit point from the plugin.
  *
@@ -2975,8 +3229,6 @@ LIBGNUNET_PLUGIN_TRANSPORT_DONE (void *cls)
 {
   struct GNUNET_TRANSPORT_PluginFunctions *api = cls;
   struct HTTP_Server_Plugin *plugin = api->cls;
-  struct Session *pos;
-  struct Session *next;
 
   if (NULL == api->cls)
   {
@@ -2985,67 +3237,79 @@ LIBGNUNET_PLUGIN_TRANSPORT_DONE (void *cls)
     return NULL;
   }
   plugin->in_shutdown = GNUNET_YES;
-  GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, plugin->name,
-                   _("Shutting down plugin `%s'\n"),
-                   plugin->name);
+  LOG (GNUNET_ERROR_TYPE_INFO,
+       _("Shutting down plugin `%s'\n"),
+       plugin->name);
 
-  if (GNUNET_SCHEDULER_NO_TASK != plugin->notify_ext_task)
+  if (NULL != plugin->notify_ext_task)
   {
     GNUNET_SCHEDULER_cancel (plugin->notify_ext_task);
-    plugin->notify_ext_task = GNUNET_SCHEDULER_NO_TASK;
+    plugin->notify_ext_task = NULL;
   }
 
   if (NULL != plugin->ext_addr)
   {
-    GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, plugin->name,
-                     "Notifying transport to remove address `%s'\n",
-                     http_common_plugin_address_to_string (NULL,
-                                                           plugin->protocol,
-                                                           plugin->ext_addr,
-                                                           plugin->ext_addr_len));
+    LOG (GNUNET_ERROR_TYPE_DEBUG,
+         "Notifying transport to remove address `%s'\n",
+         http_common_plugin_address_to_string (plugin->protocol,
+                                               plugin->ext_addr->address,
+                                               plugin->ext_addr->address_length));
 #if BUILD_HTTPS
     plugin->env->notify_address (plugin->env->cls,
                                  GNUNET_NO,
-                                 plugin->ext_addr,
-                                 plugin->ext_addr_len,
-                                 "https_client");
+                                 plugin->ext_addr);
 #else
   plugin->env->notify_address (plugin->env->cls,
                                GNUNET_NO,
-                               plugin->ext_addr,
-                               plugin->ext_addr_len,
-                               "http_client");
+                               plugin->ext_addr);
 #endif
+    GNUNET_HELLO_address_free (plugin->ext_addr);
+    plugin->ext_addr = NULL;
   }
 
   /* Stop to report addresses to transport service */
   server_stop_report_addresses (plugin);
-  server_stop (plugin);
-  next = plugin->head;
-  while (NULL != (pos = next))
+  if (NULL != plugin->server_v4_task)
   {
-    next = pos->next;
-    GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, plugin->name,
-                     "Removing left over session %p\n", pos);
-
-    if ((GNUNET_YES == pos->session_passed) && (GNUNET_NO == pos->session_ended))
-    {
-      /* Notify transport immediately that this session is invalid */
-      pos->session_ended = GNUNET_YES;
-      plugin->env->session_end (plugin->env->cls, &pos->target, pos);
-    }
-    server_delete_session (plugin, pos);
+    GNUNET_SCHEDULER_cancel (plugin->server_v4_task);
+    plugin->server_v4_task = NULL;
   }
 
+  if (NULL != plugin->server_v6_task)
+  {
+    GNUNET_SCHEDULER_cancel (plugin->server_v6_task);
+    plugin->server_v6_task = NULL;
+  }
+#if BUILD_HTTPS
+  GNUNET_free_non_null (plugin->crypto_init);
+  GNUNET_free_non_null (plugin->cert);
+  GNUNET_free_non_null (plugin->key);
+#endif
+  GNUNET_CONTAINER_multipeermap_iterate (plugin->sessions,
+                                         &destroy_session_shutdown_cb,
+                                         plugin);
+  GNUNET_CONTAINER_multipeermap_destroy (plugin->sessions);
+  plugin->sessions = NULL;
+  if (NULL != plugin->server_v4)
+  {
+    MHD_stop_daemon (plugin->server_v4);
+    plugin->server_v4 = NULL;
+  }
+  if (NULL != plugin->server_v6)
+  {
+    MHD_stop_daemon (plugin->server_v6);
+    plugin->server_v6 = NULL;
+  }
   /* Clean up */
   GNUNET_free_non_null (plugin->external_hostname);
   GNUNET_free_non_null (plugin->ext_addr);
   GNUNET_free_non_null (plugin->server_addr_v4);
   GNUNET_free_non_null (plugin->server_addr_v6);
+  regfree (&plugin->url_regex);
 
-  GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, plugin->name,
-                   _("Shutdown for plugin `%s' complete\n"),
-                   plugin->name);
+  LOG (GNUNET_ERROR_TYPE_DEBUG,
+       _("Shutdown for plugin `%s' complete\n"),
+       plugin->name);
 
   GNUNET_free (plugin);
   GNUNET_free (api);
@@ -3053,32 +3317,146 @@ LIBGNUNET_PLUGIN_TRANSPORT_DONE (void *cls)
 }
 
 
+/**
+ * Function called for a quick conversion of the binary address to
+ * a numeric address.  Note that the caller must not free the
+ * address and that the next call to this function is allowed
+ * to override the address again.
+ *
+ * @param cls unused
+ * @param addr binary address
+ * @param addrlen length of the address
+ * @return string representing the same address
+ */
 static const char *
-http_plugin_address_to_string (void *cls,
-                               const void *addr,
-                               size_t addrlen)
+http_server_plugin_address_to_string (void *cls,
+                                      const void *addr,
+                                      size_t addrlen)
 {
-#if BUILD_HTTPS
-  return http_common_plugin_address_to_string (cls, PLUGIN_NAME, addr, addrlen);
-#else
-  return http_common_plugin_address_to_string (cls, PLUGIN_NAME, addr, addrlen);
-#endif
+  return http_common_plugin_address_to_string (PLUGIN_NAME,
+                                               addr,
+                                               addrlen);
 }
 
 
 /**
  * Function obtain the network type for a session
  *
- * @param cls closure ('struct Plugin*')
+ * @param cls closure (`struct HTTP_Server_Plugin *`)
  * @param session the session
- * @return the network type in HBO or GNUNET_SYSERR
+ * @return the network type in HBO or #GNUNET_SYSERR
+ */
+static enum GNUNET_ATS_Network_Type
+http_server_plugin_get_network (void *cls,
+                                struct GNUNET_ATS_Session *session)
+{
+  return session->scope;
+}
+
+
+/**
+ * Function obtain the network type for an address.
+ *
+ * @param cls closure (`struct Plugin *`)
+ * @param address the address
+ * @return the network type
  */
 static enum GNUNET_ATS_Network_Type
-http_server_get_network (void *cls,
-                        struct Session *session)
+http_server_plugin_get_network_for_address (void *cls,
+                                            const struct GNUNET_HELLO_Address *address)
+{
+  struct HTTP_Server_Plugin *plugin = cls;
+
+  return http_common_get_network_for_address (plugin->env,
+                                              address);
+}
+
+
+/**
+ * Function that will be called whenever the transport service wants to
+ * notify the plugin that the inbound quota changed and that the plugin
+ * should update it's delay for the next receive value
+ *
+ * @param cls closure
+ * @param peer which peer was the session for
+ * @param session which session is being updated
+ * @param delay new delay to use for receiving
+ */
+static void
+http_server_plugin_update_inbound_delay (void *cls,
+                                         const struct GNUNET_PeerIdentity *peer,
+                                         struct GNUNET_ATS_Session *session,
+                                         struct GNUNET_TIME_Relative delay)
+{
+  session->next_receive = GNUNET_TIME_relative_to_absolute (delay);
+  LOG (GNUNET_ERROR_TYPE_DEBUG,
+       "New inbound delay %s\n",
+       GNUNET_STRINGS_relative_time_to_string (delay,
+                                               GNUNET_NO));
+  if (NULL != session->recv_wakeup_task)
+  {
+    GNUNET_SCHEDULER_cancel (session->recv_wakeup_task);
+    session->recv_wakeup_task
+      = GNUNET_SCHEDULER_add_delayed (delay,
+                                      &server_wake_up,
+                                      session);
+  }
+}
+
+
+/**
+ * Return information about the given session to the
+ * monitor callback.
+ *
+ * @param cls the `struct Plugin` with the monitor callback (`sic`)
+ * @param peer peer we send information about
+ * @param value our `struct GNUNET_ATS_Session` to send information about
+ * @return #GNUNET_OK (continue to iterate)
+ */
+static int
+send_session_info_iter (void *cls,
+                        const struct GNUNET_PeerIdentity *peer,
+                        void *value)
+{
+  struct HTTP_Server_Plugin *plugin = cls;
+  struct GNUNET_ATS_Session *session = value;
+
+  notify_session_monitor (plugin,
+                          session,
+                          GNUNET_TRANSPORT_SS_INIT);
+  return GNUNET_OK;
+}
+
+
+/**
+ * Begin monitoring sessions of a plugin.  There can only
+ * be one active monitor per plugin (i.e. if there are
+ * multiple monitors, the transport service needs to
+ * multiplex the generated events over all of them).
+ *
+ * @param cls closure of the plugin
+ * @param sic callback to invoke, NULL to disable monitor;
+ *            plugin will being by iterating over all active
+ *            sessions immediately and then enter monitor mode
+ * @param sic_cls closure for @a sic
+ */
+static void
+http_server_plugin_setup_monitor (void *cls,
+                                  GNUNET_TRANSPORT_SessionInfoCallback sic,
+                                  void *sic_cls)
 {
-  GNUNET_assert (NULL != session);
-  return ntohl (session->ats_address_network_type);
+  struct HTTP_Server_Plugin *plugin = cls;
+
+  plugin->sic = sic;
+  plugin->sic_cls = sic_cls;
+  if (NULL != sic)
+  {
+    GNUNET_CONTAINER_multipeermap_iterate (plugin->sessions,
+                                           &send_session_info_iter,
+                                           plugin);
+    /* signal end of first iteration */
+    sic (sic_cls, NULL, NULL);
+  }
 }
 
 
@@ -3101,13 +3479,16 @@ LIBGNUNET_PLUGIN_TRANSPORT_INIT (void *cls)
        initialze the plugin or the API */
     api = GNUNET_new (struct GNUNET_TRANSPORT_PluginFunctions);
     api->cls = NULL;
-    api->address_to_string = &http_plugin_address_to_string;
+    api->address_to_string = &http_server_plugin_address_to_string;
     api->string_to_address = &http_common_plugin_string_to_address;
     api->address_pretty_printer = &http_common_plugin_address_pretty_printer;
     return api;
   }
   plugin = GNUNET_new (struct HTTP_Server_Plugin);
   plugin->env = env;
+  plugin->sessions = GNUNET_CONTAINER_multipeermap_create (128,
+                                                           GNUNET_YES);
+
   api = GNUNET_new (struct GNUNET_TRANSPORT_PluginFunctions);
   api->cls = plugin;
   api->send = &http_server_plugin_send;
@@ -3117,11 +3498,14 @@ LIBGNUNET_PLUGIN_TRANSPORT_INIT (void *cls)
   api->check_address = &http_server_plugin_address_suggested;
   api->get_session = &http_server_plugin_get_session;
 
-  api->address_to_string = &http_plugin_address_to_string;
+  api->address_to_string = &http_server_plugin_address_to_string;
   api->string_to_address = &http_common_plugin_string_to_address;
   api->address_pretty_printer = &http_common_plugin_address_pretty_printer;
-  api->get_network = &http_server_get_network;
-
+  api->get_network = &http_server_plugin_get_network;
+  api->get_network_for_address = &http_server_plugin_get_network_for_address;
+  api->update_session_timeout = &http_server_plugin_update_session_timeout;
+  api->update_inbound_delay = &http_server_plugin_update_inbound_delay;
+  api->setup_monitor = &http_server_plugin_setup_monitor;
 #if BUILD_HTTPS
   plugin->name = "transport-https_server";
   plugin->protocol = "https";
@@ -3130,6 +3514,32 @@ LIBGNUNET_PLUGIN_TRANSPORT_INIT (void *cls)
   plugin->protocol = "http";
 #endif
 
+  if (GNUNET_YES ==
+      GNUNET_CONFIGURATION_get_value_yesno (env->cfg,
+                                            plugin->name,
+                                            "TCP_STEALTH"))
+  {
+#ifdef TCP_STEALTH
+    plugin->options |= HTTP_OPTIONS_TCP_STEALTH;
+#else
+    GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
+                _("TCP_STEALTH not supported on this platform.\n"));
+    LIBGNUNET_PLUGIN_TRANSPORT_DONE (api);
+    return NULL;
+#endif
+  }
+
+  /* Compile URL regex */
+  if (regcomp (&plugin->url_regex,
+              URL_REGEX,
+              REG_EXTENDED))
+  {
+    LOG (GNUNET_ERROR_TYPE_ERROR,
+        _("Unable to compile URL regex\n"));
+    LIBGNUNET_PLUGIN_TRANSPORT_DONE (api);
+    return NULL;
+  }
+
   /* Configure plugin */
   if (GNUNET_SYSERR == server_configure_plugin (plugin))
   {