REST/NAMESTORE: rework API
[oweals/gnunet.git] / src / transport / plugin_transport_http_client.c
index 16676bc2d252fb775699b56af0681ab9e90b47f2..3c8dc21e5589a01d96fd3486a78bdbe87a1735ef 100644 (file)
@@ -1,21 +1,21 @@
 /*
      This file is part of GNUnet
-     (C) 2002-2014 Christian Grothoff (and other contributing authors)
+     Copyright (C) 2002-2014 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
-     by the Free Software Foundation; either version 3, or (at your
-     option) any later version.
+     GNUnet is free software: you can redistribute it and/or modify it
+     under the terms of the GNU Affero General Public License as published
+     by the Free Software Foundation, either version 3 of the License,
+     or (at your option) any later version.
 
      GNUnet is distributed in the hope that it will be useful, but
      WITHOUT ANY WARRANTY; without even the implied warranty of
      MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
-     General Public License for more details.
+     Affero General Public License for more details.
+    
+     You should have received a copy of the GNU Affero General Public License
+     along with this program.  If not, see <http://www.gnu.org/licenses/>.
 
-     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.
+     SPDX-License-Identifier: AGPL3.0-or-later
 */
 
 /**
 #include "gnunet_protocols.h"
 #include "gnunet_transport_plugin.h"
 #include "plugin_transport_http_common.h"
+#if HAVE_CURL_CURL_H
 #include <curl/curl.h>
+#elif HAVE_GNURL_CURL_H
+#include <gnurl/curl.h>
+#endif
 
 
 #define LOG(kind,...) GNUNET_log_from(kind, PLUGIN_NAME, __VA_ARGS__)
@@ -148,7 +152,7 @@ struct HTTP_Message
 /**
  * Session handle for HTTP(S) connections.
  */
-struct Session;
+struct GNUNET_ATS_Session;
 
 
 /**
@@ -170,14 +174,14 @@ struct RequestHandle
   /**
    * The related session
    */
-  struct Session *s;
+  struct GNUNET_ATS_Session *s;
 };
 
 
 /**
  * Session handle for connections.
  */
-struct Session
+struct GNUNET_ATS_Session
 {
   /**
    * The URL to connect to
@@ -217,22 +221,22 @@ struct Session
   /**
    * Message stream tokenizer for incoming data
    */
-  struct GNUNET_SERVER_MessageStreamTokenizer *msg_tk;
+  struct GNUNET_MessageStreamTokenizer *msg_tk;
 
   /**
    * Session timeout task
    */
-  GNUNET_SCHEDULER_TaskIdentifier put_disconnect_task;
+  struct GNUNET_SCHEDULER_Task *put_disconnect_task;
 
   /**
    * Session timeout task
    */
-  GNUNET_SCHEDULER_TaskIdentifier timeout_task;
+  struct GNUNET_SCHEDULER_Task *timeout_task;
 
   /**
    * Task to wake up client receive handle when receiving is allowed again
    */
-  GNUNET_SCHEDULER_TaskIdentifier recv_wakeup_task;
+  struct GNUNET_SCHEDULER_Task *recv_wakeup_task;
 
   /**
    * Absolute time when to receive data again.
@@ -262,9 +266,9 @@ struct Session
   unsigned int msgs_in_queue;
 
   /**
-   * ATS network type in NBO
+   * ATS network type.
    */
-  uint32_t ats_address_network_type;
+  enum GNUNET_NetworkType scope;
 };
 
 
@@ -326,7 +330,7 @@ struct HTTP_Client_Plugin
   /**
    * curl perform task
    */
-  GNUNET_SCHEDULER_TaskIdentifier client_perform_task;
+  struct GNUNET_SCHEDULER_Task * client_perform_task;
 
   /**
    * Type of proxy server:
@@ -393,7 +397,7 @@ struct HTTP_Client_Plugin
  * @return #GNUNET_OK on success, #GNUNET_SYSERR on error
  */
 static int
-http_client_plugin_session_disconnect (void *cls, struct Session *s);
+http_client_plugin_session_disconnect (void *cls, struct GNUNET_ATS_Session *s);
 
 
 /**
@@ -406,7 +410,7 @@ http_client_plugin_session_disconnect (void *cls, struct Session *s);
  */
 static void
 notify_session_monitor (struct HTTP_Client_Plugin *plugin,
-                        struct Session *session,
+                        struct GNUNET_ATS_Session *session,
                         enum GNUNET_TRANSPORT_SessionState state)
 {
   struct GNUNET_TRANSPORT_SessionInfo info;
@@ -433,28 +437,28 @@ notify_session_monitor (struct HTTP_Client_Plugin *plugin,
  * @param s the session to delete
  */
 static void
-client_delete_session (struct Session *s)
+client_delete_session (struct GNUNET_ATS_Session *s)
 {
   struct HTTP_Client_Plugin *plugin = s->plugin;
   struct HTTP_Message *pos;
   struct HTTP_Message *next;
   CURLMcode mret;
 
-  if (GNUNET_SCHEDULER_NO_TASK != s->timeout_task)
+  if (NULL != s->timeout_task)
   {
     GNUNET_SCHEDULER_cancel (s->timeout_task);
-    s->timeout_task = GNUNET_SCHEDULER_NO_TASK;
+    s->timeout_task = NULL;
     s->timeout = GNUNET_TIME_UNIT_ZERO_ABS;
   }
-  if (GNUNET_SCHEDULER_NO_TASK != s->put_disconnect_task)
+  if (NULL != s->put_disconnect_task)
   {
     GNUNET_SCHEDULER_cancel (s->put_disconnect_task);
-    s->put_disconnect_task = GNUNET_SCHEDULER_NO_TASK;
+    s->put_disconnect_task = NULL;
   }
-  if (GNUNET_SCHEDULER_NO_TASK != s->recv_wakeup_task)
+  if (NULL != s->recv_wakeup_task)
   {
     GNUNET_SCHEDULER_cancel (s->recv_wakeup_task);
-    s->recv_wakeup_task = GNUNET_SCHEDULER_NO_TASK;
+    s->recv_wakeup_task = NULL;
   }
   GNUNET_assert (GNUNET_OK ==
                  GNUNET_CONTAINER_multipeermap_remove (plugin->sessions,
@@ -524,7 +528,7 @@ client_delete_session (struct Session *s)
                           GNUNET_TRANSPORT_SS_DONE);
   if (NULL != s->msg_tk)
   {
-    GNUNET_SERVER_mst_destroy (s->msg_tk);
+    GNUNET_MST_destroy (s->msg_tk);
     s->msg_tk = NULL;
   }
   GNUNET_HELLO_address_free (s->address);
@@ -539,9 +543,9 @@ client_delete_session (struct Session *s)
  * @param s the session
  */
 static void
-client_reschedule_session_timeout (struct Session *s)
+client_reschedule_session_timeout (struct GNUNET_ATS_Session *s)
 {
-  GNUNET_assert (GNUNET_SCHEDULER_NO_TASK != s->timeout_task);
+  GNUNET_assert (NULL != s->timeout_task);
   s->timeout = GNUNET_TIME_relative_to_absolute (GNUNET_CONSTANTS_IDLE_CONNECTION_TIMEOUT);
 }
 
@@ -553,8 +557,7 @@ client_reschedule_session_timeout (struct Session *s)
  * @param tc gnunet scheduler task context
  */
 static void
-client_run (void *cls,
-            const struct GNUNET_SCHEDULER_TaskContext *tc);
+client_run (void *cls);
 
 
 /**
@@ -579,10 +582,10 @@ client_schedule (struct HTTP_Client_Plugin *plugin,
   struct GNUNET_TIME_Relative timeout;
 
   /* Cancel previous scheduled task */
-  if (plugin->client_perform_task != GNUNET_SCHEDULER_NO_TASK)
+  if (plugin->client_perform_task != NULL)
   {
     GNUNET_SCHEDULER_cancel (plugin->client_perform_task);
-    plugin->client_perform_task = GNUNET_SCHEDULER_NO_TASK;
+    plugin->client_perform_task = NULL;
   }
   max = -1;
   FD_ZERO (&rs);
@@ -678,7 +681,7 @@ client_log (CURL *curl,
     ttype = "UNSPECIFIED";
     break;
   }
-  memcpy (text, data, size);
+  GNUNET_memcpy (text, data, size);
   if (text[size - 1] == '\n')
   {
     text[size] = '\0';
@@ -704,7 +707,7 @@ client_log (CURL *curl,
  * @return #GNUNET_OK on success, #GNUNET_SYSERR otherwise
  */
 static int
-client_connect_get (struct Session *s);
+client_connect_get (struct GNUNET_ATS_Session *s);
 
 
 /**
@@ -714,7 +717,7 @@ client_connect_get (struct Session *s);
  * @return #GNUNET_SYSERR for hard failure, #GNUNET_OK for success
  */
 static int
-client_connect_put (struct Session *s);
+client_connect_put (struct GNUNET_ATS_Session *s);
 
 
 /**
@@ -746,7 +749,7 @@ client_connect_put (struct Session *s);
  */
 static ssize_t
 http_client_plugin_send (void *cls,
-                         struct Session *s,
+                         struct GNUNET_ATS_Session *s,
                          const char *msgbuf,
                          size_t msgbuf_size,
                          unsigned int priority,
@@ -771,7 +774,7 @@ http_client_plugin_send (void *cls,
   msg->buf = (char *) &msg[1];
   msg->transmit_cont = cont;
   msg->transmit_cont_cls = cont_cls;
-  memcpy (msg->buf,
+  GNUNET_memcpy (msg->buf,
           msgbuf,
           msgbuf_size);
   GNUNET_CONTAINER_DLL_insert_tail (s->msg_head,
@@ -802,9 +805,9 @@ http_client_plugin_send (void *cls,
   if (H_PAUSED == s->put.state)
   {
     /* PUT request was paused, unpause */
-    GNUNET_assert (s->put_disconnect_task != GNUNET_SCHEDULER_NO_TASK);
+    GNUNET_assert (s->put_disconnect_task != NULL);
     GNUNET_SCHEDULER_cancel (s->put_disconnect_task);
-    s->put_disconnect_task = GNUNET_SCHEDULER_NO_TASK;
+    s->put_disconnect_task = NULL;
     LOG (GNUNET_ERROR_TYPE_DEBUG,
          "Session %p/request %p: unpausing request\n",
          s, s->put.easyhandle);
@@ -838,7 +841,7 @@ http_client_plugin_send (void *cls,
  */
 static int
 http_client_plugin_session_disconnect (void *cls,
-                                       struct Session *s)
+                                       struct GNUNET_ATS_Session *s)
 {
   struct HTTP_Client_Plugin *plugin = cls;
 
@@ -851,10 +854,10 @@ http_client_plugin_session_disconnect (void *cls,
   client_delete_session (s);
 
   /* Re-schedule since handles have changed */
-  if (plugin->client_perform_task != GNUNET_SCHEDULER_NO_TASK)
+  if (NULL != plugin->client_perform_task)
   {
     GNUNET_SCHEDULER_cancel (plugin->client_perform_task);
-    plugin->client_perform_task = GNUNET_SCHEDULER_NO_TASK;
+    plugin->client_perform_task = NULL;
   }
   client_schedule (plugin, GNUNET_YES);
 
@@ -882,7 +885,7 @@ http_client_query_keepalive_factor (void *cls)
  *
  * @param cls the `struct HTTP_Client_Plugin *`
  * @param peer identity of the peer
- * @param value the `struct Session *`
+ * @param value the `struct GNUNET_ATS_Session *`
  * @return #GNUNET_OK (continue iterating)
  */
 static int
@@ -891,7 +894,7 @@ destroy_session_cb (void *cls,
                     void *value)
 {
   struct HTTP_Client_Plugin *plugin = cls;
-  struct Session *session = value;
+  struct GNUNET_ATS_Session *session = value;
 
   http_client_plugin_session_disconnect (plugin, session);
   return GNUNET_OK;
@@ -925,7 +928,7 @@ http_client_plugin_peer_disconnect (void *cls,
 /**
  * Closure for #session_lookup_client_by_address().
  */
-struct SessionClientCtx
+struct GNUNET_ATS_SessionClientCtx
 {
   /**
    * Address we are looking for.
@@ -935,16 +938,16 @@ struct SessionClientCtx
   /**
    * Session that was found.
    */
-  struct Session *ret;
+  struct GNUNET_ATS_Session *ret;
 };
 
 
 /**
  * Locate the seession object for a given address.
  *
- * @param cls the `struct SessionClientCtx *`
+ * @param cls the `struct GNUNET_ATS_SessionClientCtx *`
  * @param key peer identity
- * @param value the `struct Session` to check
+ * @param value the `struct GNUNET_ATS_Session` to check
  * @return #GNUNET_NO if found, #GNUNET_OK if not
  */
 static int
@@ -952,8 +955,8 @@ session_lookup_client_by_address (void *cls,
                                   const struct GNUNET_PeerIdentity *key,
                                   void *value)
 {
-  struct SessionClientCtx *sc_ctx = cls;
-  struct Session *s = value;
+  struct GNUNET_ATS_SessionClientCtx *sc_ctx = cls;
+  struct GNUNET_ATS_Session *s = value;
 
   if (0 == GNUNET_HELLO_address_cmp (sc_ctx->address,
                                      s->address))
@@ -972,11 +975,11 @@ session_lookup_client_by_address (void *cls,
  * @param address the address
  * @return the session or NULL
  */
-static struct Session *
+static struct GNUNET_ATS_Session *
 client_lookup_session (struct HTTP_Client_Plugin *plugin,
                        const struct GNUNET_HELLO_Address *address)
 {
-  struct SessionClientCtx sc_ctx;
+  struct GNUNET_ATS_SessionClientCtx sc_ctx;
 
   sc_ctx.address = address;
   sc_ctx.ret = NULL;
@@ -992,16 +995,14 @@ client_lookup_session (struct HTTP_Client_Plugin *plugin,
  * after a while (so that gnurl stops asking).  This task
  * is the delayed task that actually disconnects the PUT.
  *
- * @param cls the `struct Session *` with the put
- * @param tc scheduler context
+ * @param cls the `struct GNUNET_ATS_Session *` with the put
  */
 static void
-client_put_disconnect (void *cls,
-                       const struct GNUNET_SCHEDULER_TaskContext *tc)
+client_put_disconnect (void *cls)
 {
-  struct Session *s = cls;
+  struct GNUNET_ATS_Session *s = cls;
 
-  s->put_disconnect_task = GNUNET_SCHEDULER_NO_TASK;
+  s->put_disconnect_task = NULL;
   LOG (GNUNET_ERROR_TYPE_DEBUG,
        "Session %p/request %p: will be disconnected due to no activity\n",
        s, s->put.easyhandle);
@@ -1020,7 +1021,7 @@ client_put_disconnect (void *cls,
  * @param stream pointer where to write data
  * @param size size of an individual element
  * @param nmemb count of elements that can be written to the buffer
- * @param cls our `struct Session`
+ * @param cls our `struct GNUNET_ATS_Session`
  * @return bytes written to stream, returning 0 will terminate request!
  */
 static size_t
@@ -1029,7 +1030,7 @@ client_send_cb (void *stream,
                 size_t nmemb,
                 void *cls)
 {
-  struct Session *s = cls;
+  struct GNUNET_ATS_Session *s = cls;
   struct HTTP_Client_Plugin *plugin = s->plugin;
   struct HTTP_Message *msg = s->msg_head;
   size_t len;
@@ -1060,8 +1061,10 @@ client_send_cb (void *stream,
          "Session %p/request %p: nothing to send, suspending\n",
          s,
          s->put.easyhandle);
-    s->put_disconnect_task = GNUNET_SCHEDULER_add_delayed (PUT_DISCONNECT_TIMEOUT,
-        &client_put_disconnect, s);
+    s->put_disconnect_task
+      = GNUNET_SCHEDULER_add_delayed (PUT_DISCONNECT_TIMEOUT,
+                                     &client_put_disconnect,
+                                     s);
     s->put.state = H_PAUSED;
     return CURL_READFUNC_PAUSE;
   }
@@ -1070,7 +1073,9 @@ client_send_cb (void *stream,
   /* calculate how much fits in buffer */
   len = GNUNET_MIN (msg->size - msg->pos,
                     size * nmemb);
-  memcpy (stream, &msg->buf[msg->pos], len);
+  GNUNET_memcpy (stream,
+                &msg->buf[msg->pos],
+                len);
   msg->pos += len;
   if (msg->pos == msg->size)
   {
@@ -1124,26 +1129,22 @@ client_send_cb (void *stream,
  * Wake up a curl handle which was suspended
  *
  * @param cls the session
- * @param tc task context
  */
 static void
-client_wake_up (void *cls,
-                const struct GNUNET_SCHEDULER_TaskContext *tc)
+client_wake_up (void *cls)
 {
-  struct Session *s = cls;
+  struct GNUNET_ATS_Session *s = cls;
 
-  s->recv_wakeup_task = GNUNET_SCHEDULER_NO_TASK;
-  if (0 != (tc->reason & GNUNET_SCHEDULER_REASON_SHUTDOWN))
-    return;
+  s->recv_wakeup_task = NULL;
   LOG (GNUNET_ERROR_TYPE_DEBUG,
        "Session %p/request %p: Waking up GET handle\n",
        s, s->get.easyhandle);
   if (H_PAUSED == s->put.state)
   {
     /* PUT request was paused, unpause */
-    GNUNET_assert (s->put_disconnect_task != GNUNET_SCHEDULER_NO_TASK);
+    GNUNET_assert (s->put_disconnect_task != NULL);
     GNUNET_SCHEDULER_cancel (s->put_disconnect_task);
-    s->put_disconnect_task = GNUNET_SCHEDULER_NO_TASK;
+    s->put_disconnect_task = NULL;
     s->put.state = H_CONNECTED;
     if (NULL != s->put.easyhandle)
       curl_easy_pause (s->put.easyhandle, CURLPAUSE_CONT);
@@ -1157,35 +1158,23 @@ client_wake_up (void *cls,
  * Callback for message stream tokenizer
  *
  * @param cls the session
- * @param client not used
  * @param message the message received
  * @return always #GNUNET_OK
  */
 static int
 client_receive_mst_cb (void *cls,
-                       void *client,
                        const struct GNUNET_MessageHeader *message)
 {
-  struct Session *s = cls;
+  struct GNUNET_ATS_Session *s = cls;
   struct HTTP_Client_Plugin *plugin;
   struct GNUNET_TIME_Relative delay;
-  struct GNUNET_ATS_Information atsi;
   char *stat_txt;
 
   plugin = s->plugin;
-  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));
-
   delay = s->plugin->env->receive (plugin->env->cls,
                                    s->address,
                                    s,
                                    message);
-  plugin->env->update_address_metrics (plugin->env->cls,
-                                      s->address,
-                                       s,
-                                      &atsi, 1);
-
   GNUNET_asprintf (&stat_txt,
                    "# bytes received via %s_client",
                    plugin->protocol);
@@ -1248,7 +1237,7 @@ client_receive (void *stream,
                 size_t nmemb,
                 void *cls)
 {
-  struct Session *s = cls;
+  struct GNUNET_ATS_Session *s = cls;
   struct GNUNET_TIME_Absolute now;
   size_t len = size * nmemb;
 
@@ -1271,10 +1260,10 @@ client_receive (void *stream,
          s->get.easyhandle,
          GNUNET_STRINGS_relative_time_to_string (delta,
                                                  GNUNET_YES));
-    if (s->recv_wakeup_task != GNUNET_SCHEDULER_NO_TASK)
+    if (s->recv_wakeup_task != NULL)
     {
       GNUNET_SCHEDULER_cancel (s->recv_wakeup_task);
-      s->recv_wakeup_task = GNUNET_SCHEDULER_NO_TASK;
+      s->recv_wakeup_task = NULL;
     }
     s->recv_wakeup_task
       = GNUNET_SCHEDULER_add_delayed (delta,
@@ -1283,14 +1272,13 @@ client_receive (void *stream,
     return CURL_WRITEFUNC_PAUSE;
   }
   if (NULL == s->msg_tk)
-    s->msg_tk = GNUNET_SERVER_mst_create (&client_receive_mst_cb,
-                                          s);
-  GNUNET_SERVER_mst_receive (s->msg_tk,
-                             s,
-                             stream,
-                             len,
-                             GNUNET_NO,
-                             GNUNET_NO);
+    s->msg_tk = GNUNET_MST_create (&client_receive_mst_cb,
+                                   s);
+  GNUNET_MST_from_buffer (s->msg_tk,
+                          stream,
+                          len,
+                          GNUNET_NO,
+                          GNUNET_NO);
   return len;
 }
 
@@ -1299,11 +1287,9 @@ client_receive (void *stream,
  * Task performing curl operations
  *
  * @param cls plugin as closure
- * @param tc scheduler task context
  */
 static void
-client_run (void *cls,
-            const struct GNUNET_SCHEDULER_TaskContext *tc)
+client_run (void *cls)
 {
   struct HTTP_Client_Plugin *plugin = cls;
   int running;
@@ -1313,10 +1299,7 @@ client_run (void *cls,
   int put_request; /* GNUNET_YES if easy handle is put, GNUNET_NO for get */
   int msgs_left;
 
-  plugin->client_perform_task = GNUNET_SCHEDULER_NO_TASK;
-  if (0 != (tc->reason & GNUNET_SCHEDULER_REASON_SHUTDOWN))
-    return;
-
+  plugin->client_perform_task = NULL;
   /* While data are available or timeouts occured */
   do
   {
@@ -1328,14 +1311,14 @@ client_run (void *cls,
     while (NULL != (msg = curl_multi_info_read (plugin->curl_multi_handle, &msgs_left)))
     {
       CURL *easy_h = msg->easy_handle;
-      struct Session *s = NULL;
+      struct GNUNET_ATS_Session *s = NULL;
       char *d = NULL; /* curl requires 'd' to be a 'char *' */
 
       GNUNET_assert (NULL != easy_h);
 
       /* Obtain session from easy handle */
       GNUNET_assert (CURLE_OK == curl_easy_getinfo (easy_h, CURLINFO_PRIVATE, &d));
-      s = (struct Session *) d;
+      s = (struct GNUNET_ATS_Session *) d;
       GNUNET_assert (NULL != s);
 
       if (msg->msg != CURLMSG_DONE)
@@ -1452,11 +1435,11 @@ client_run (void *cls,
 }
 
 
-#ifdef SO_TCPSTEALTH
+#ifdef TCP_STEALTH
 /**
  * Open TCP socket with TCP STEALTH enabled.
  *
- * @param clientp our `struct Session *`
+ * @param clientp our `struct GNUNET_ATS_Session *`
  * @param purpose why does curl want to open a socket
  * @param address what kind of socket does curl want to have opened?
  * @return opened socket
@@ -1466,7 +1449,7 @@ open_tcp_stealth_socket_cb (void *clientp,
                             curlsocktype purpose,
                             struct curl_sockaddr *address)
 {
-  struct Session *s = clientp;
+  struct GNUNET_ATS_Session *s = clientp;
   int ret;
 
   switch (purpose)
@@ -1483,10 +1466,12 @@ open_tcp_stealth_socket_cb (void *clientp,
       return (curl_socket_t) ret;
     if ( (0 != setsockopt (ret,
                            IPPROTO_TCP,
-                           SO_TCPSTEALTH,
+                           TCP_STEALTH,
                            &s->address->peer,
                            sizeof (struct GNUNET_PeerIdentity))) )
     {
+      GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
+                  _("TCP_STEALTH not supported on this platform.\n"));
       (void) close (ret);
       return CURL_SOCKET_BAD;
     }
@@ -1513,7 +1498,7 @@ open_tcp_stealth_socket_cb (void *clientp,
  * @return #GNUNET_OK on success, #GNUNET_SYSERR otherwise
  */
 static int
-client_connect_get (struct Session *s)
+client_connect_get (struct GNUNET_ATS_Session *s)
 {
   CURLMcode mret;
   struct HttpAddress *ha;
@@ -1526,7 +1511,7 @@ client_connect_get (struct Session *s)
   s->get.s = s;
   if (0 != (options & HTTP_OPTIONS_TCP_STEALTH))
   {
-#ifdef SO_TCPSTEALTH
+#ifdef TCP_STEALTH
     curl_easy_setopt (s->get.easyhandle,
                       CURLOPT_OPENSOCKETFUNCTION,
                       &open_tcp_stealth_socket_cb);
@@ -1653,7 +1638,7 @@ client_connect_get (struct Session *s)
                     CURLOPT_CONNECTTIMEOUT_MS,
                     (long) (HTTP_CLIENT_NOT_VALIDATED_TIMEOUT.rel_value_us / 1000LL));
   curl_easy_setopt (s->get.easyhandle, CURLOPT_BUFFERSIZE,
-                    2 * GNUNET_SERVER_MAX_MESSAGE_SIZE);
+                    2 * GNUNET_MAX_MESSAGE_SIZE);
 #if CURL_TCP_NODELAY
   curl_easy_setopt (ps->recv_endpoint,
                     CURLOPT_TCP_NODELAY,
@@ -1693,7 +1678,7 @@ client_connect_get (struct Session *s)
  * @return #GNUNET_SYSERR for hard failure, #GNUNET_OK for ok
  */
 static int
-client_connect_put (struct Session *s)
+client_connect_put (struct GNUNET_ATS_Session *s)
 {
   CURLMcode mret;
   struct HttpAddress *ha;
@@ -1720,7 +1705,7 @@ client_connect_put (struct Session *s)
 #endif
   if (0 != (options & HTTP_OPTIONS_TCP_STEALTH))
   {
-#ifdef SO_TCPSTEALTH
+#ifdef TCP_STEALTH
     curl_easy_setopt (s->put.easyhandle,
                       CURLOPT_OPENSOCKETFUNCTION,
                       &open_tcp_stealth_socket_cb);
@@ -1830,7 +1815,7 @@ client_connect_put (struct Session *s)
                     CURLOPT_CONNECTTIMEOUT_MS,
                     (long) (HTTP_CLIENT_NOT_VALIDATED_TIMEOUT.rel_value_us / 1000LL));
   curl_easy_setopt (s->put.easyhandle, CURLOPT_BUFFERSIZE,
-                    2 * GNUNET_SERVER_MAX_MESSAGE_SIZE);
+                    2 * GNUNET_MAX_MESSAGE_SIZE);
 #if CURL_TCP_NODELAY
   curl_easy_setopt (s->put.easyhandle, CURLOPT_TCP_NODELAY, 1);
 #endif
@@ -1865,7 +1850,7 @@ client_connect_put (struct Session *s)
  * @return #GNUNET_OK on success, #GNUNET_SYSERR otherwise
  */
 static int
-client_connect (struct Session *s)
+client_connect (struct GNUNET_ATS_Session *s)
 {
   struct HTTP_Client_Plugin *plugin = s->plugin;
   int res = GNUNET_OK;
@@ -1882,13 +1867,13 @@ client_connect (struct Session *s)
     return GNUNET_SYSERR;
   }
 
-  GNUNET_asprintf(&s->url,
-                  "%s/%s;%u",
-                  http_common_plugin_address_to_url(NULL,
-                                                    s->address->address,
-                                                    s->address->address_length),
-                  GNUNET_i2s_full (plugin->env->my_identity),
-                  plugin->last_tag);
+  GNUNET_asprintf (&s->url,
+                   "%s/%s;%u",
+                   http_common_plugin_address_to_url (NULL,
+                                                      s->address->address,
+                                                      s->address->address_length),
+                   GNUNET_i2s_full (plugin->env->my_identity),
+                   plugin->last_tag);
 
   plugin->last_tag++;
   LOG (GNUNET_ERROR_TYPE_DEBUG,
@@ -1909,21 +1894,23 @@ client_connect (struct Session *s)
 
   LOG (GNUNET_ERROR_TYPE_DEBUG,
        "Session %p: connected with GET %p and PUT %p\n",
-       s, s->get.easyhandle, s->put.easyhandle);
+       s, s->get.easyhandle,
+       s->put.easyhandle);
   /* Perform connect */
   GNUNET_STATISTICS_set (plugin->env->stats,
                          HTTP_STAT_STR_CONNECTIONS,
                          plugin->cur_requests,
                          GNUNET_NO);
   /* Re-schedule since handles have changed */
-  if (plugin->client_perform_task != GNUNET_SCHEDULER_NO_TASK)
+  if (NULL != plugin->client_perform_task)
   {
     GNUNET_SCHEDULER_cancel (plugin->client_perform_task);
-    plugin->client_perform_task = GNUNET_SCHEDULER_NO_TASK;
+    plugin->client_perform_task = NULL;
   }
 
   /* Schedule task to run immediately */
-  plugin->client_perform_task = GNUNET_SCHEDULER_add_now (client_run, plugin);
+  plugin->client_perform_task = GNUNET_SCHEDULER_add_now (client_run,
+                                                          plugin);
   return res;
 }
 
@@ -1935,28 +1922,44 @@ client_connect (struct Session *s)
  * @param session the session
  * @return the network type
  */
-static enum GNUNET_ATS_Network_Type
+static enum GNUNET_NetworkType
 http_client_plugin_get_network (void *cls,
-                                struct Session *session)
+                                struct GNUNET_ATS_Session *session)
 {
-  return ntohl (session->ats_address_network_type);
+  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_NetworkType
+http_client_plugin_get_network_for_address (void *cls,
+                                            const struct GNUNET_HELLO_Address *address)
+{
+  struct HTTP_Client_Plugin *plugin = cls;
+
+  return http_common_get_network_for_address (plugin->env,
+                                              address);
 }
 
 
 /**
  * Session was idle, so disconnect it
  *
- * @param cls the `struct Session` of the idle session
- * @param tc scheduler context
+ * @param cls the `struct GNUNET_ATS_Session` of the idle session
  */
 static void
-client_session_timeout (void *cls,
-                        const struct GNUNET_SCHEDULER_TaskContext *tc)
+client_session_timeout (void *cls)
 {
-  struct Session *s = cls;
+  struct GNUNET_ATS_Session *s = cls;
   struct GNUNET_TIME_Relative left;
 
-  s->timeout_task = GNUNET_SCHEDULER_NO_TASK;
+  s->timeout_task = NULL;
   left = GNUNET_TIME_absolute_get_remaining (s->timeout);
   if (0 != left.rel_value_us)
   {
@@ -1989,14 +1992,14 @@ client_session_timeout (void *cls,
  * @param address the address
  * @return the session or NULL of max connections exceeded
  */
-static struct Session *
+static struct GNUNET_ATS_Session *
 http_client_plugin_get_session (void *cls,
                                 const struct GNUNET_HELLO_Address *address)
 {
   struct HTTP_Client_Plugin *plugin = cls;
-  struct Session *s;
+  struct GNUNET_ATS_Session *s;
   struct sockaddr *sa;
-  struct GNUNET_ATS_Information ats;
+  enum GNUNET_NetworkType net_type;
   size_t salen = 0;
   int res;
 
@@ -2019,8 +2022,7 @@ http_client_plugin_get_session (void *cls,
   }
 
   /* Determine network location */
-  ats.type = htonl (GNUNET_ATS_NETWORK_TYPE);
-  ats.value = htonl (GNUNET_ATS_NET_UNSPECIFIED);
+  net_type = GNUNET_NT_UNSPECIFIED;
   sa = http_common_socket_from_address (address->address,
                                         address->address_length,
                                         &res);
@@ -2037,24 +2039,24 @@ http_client_plugin_get_session (void *cls,
     {
       salen = sizeof (struct sockaddr_in6);
     }
-    ats = plugin->env->get_address_type (plugin->env->cls, sa, salen);
+    net_type = plugin->env->get_address_type (plugin->env->cls, sa, salen);
     GNUNET_free (sa);
   }
   else if (GNUNET_NO == res)
   {
     /* Cannot convert to sockaddr -> is external hostname */
-    ats.value = htonl (GNUNET_ATS_NET_WAN);
+    net_type = GNUNET_NT_WAN;
   }
-  if (GNUNET_ATS_NET_UNSPECIFIED == ntohl (ats.value))
+  if (GNUNET_NT_UNSPECIFIED == net_type)
   {
     GNUNET_break (0);
     return NULL;
   }
 
-  s = GNUNET_new (struct Session);
+  s = GNUNET_new (struct GNUNET_ATS_Session);
   s->plugin = plugin;
   s->address = GNUNET_HELLO_address_copy (address);
-  s->ats_address_network_type = ats.value;
+  s->scope = net_type;
 
   s->put.state = H_NOT_CONNECTED;
   s->timeout = GNUNET_TIME_relative_to_absolute (HTTP_CLIENT_SESSION_TIMEOUT);
@@ -2164,10 +2166,10 @@ LIBGNUNET_PLUGIN_TRANSPORT_DONE (void *cls)
   GNUNET_CONTAINER_multipeermap_iterate (plugin->sessions,
                                          &destroy_session_cb,
                                          plugin);
-  if (GNUNET_SCHEDULER_NO_TASK != plugin->client_perform_task)
+  if (NULL != plugin->client_perform_task)
   {
     GNUNET_SCHEDULER_cancel (plugin->client_perform_task);
-    plugin->client_perform_task = GNUNET_SCHEDULER_NO_TASK;
+    plugin->client_perform_task = NULL;
   }
   if (NULL != plugin->curl_multi_handle)
   {
@@ -2339,7 +2341,7 @@ http_client_plugin_address_to_string (void *cls,
 static void
 http_client_plugin_update_session_timeout (void *cls,
                                            const struct GNUNET_PeerIdentity *peer,
-                                           struct Session *session)
+                                           struct GNUNET_ATS_Session *session)
 {
   client_reschedule_session_timeout (session);
 }
@@ -2358,7 +2360,7 @@ http_client_plugin_update_session_timeout (void *cls,
 static void
 http_client_plugin_update_inbound_delay (void *cls,
                                          const struct GNUNET_PeerIdentity *peer,
-                                         struct Session *s,
+                                         struct GNUNET_ATS_Session *s,
                                          struct GNUNET_TIME_Relative delay)
 {
   s->next_receive = GNUNET_TIME_relative_to_absolute (delay);
@@ -2366,11 +2368,13 @@ http_client_plugin_update_inbound_delay (void *cls,
        "New inbound delay %s\n",
        GNUNET_STRINGS_relative_time_to_string (delay,
                                                GNUNET_NO));
-  if (s->recv_wakeup_task != GNUNET_SCHEDULER_NO_TASK)
+  if (s->recv_wakeup_task != NULL)
   {
     GNUNET_SCHEDULER_cancel (s->recv_wakeup_task);
-    s->recv_wakeup_task = GNUNET_SCHEDULER_add_delayed (delay,
-        &client_wake_up, s);
+    s->recv_wakeup_task
+      = GNUNET_SCHEDULER_add_delayed (delay,
+                                     &client_wake_up,
+                                     s);
   }
 }
 
@@ -2381,7 +2385,7 @@ http_client_plugin_update_inbound_delay (void *cls,
  *
  * @param cls the `struct Plugin` with the monitor callback (`sic`)
  * @param peer peer we send information about
- * @param value our `struct Session` to send information about
+ * @param value our `struct GNUNET_ATS_Session` to send information about
  * @return #GNUNET_OK (continue to iterate)
  */
 static int
@@ -2390,7 +2394,7 @@ send_session_info_iter (void *cls,
                         void *value)
 {
   struct HTTP_Client_Plugin *plugin = cls;
-  struct Session *session = value;
+  struct GNUNET_ATS_Session *session = value;
 
   notify_session_monitor (plugin,
                           session,
@@ -2472,6 +2476,7 @@ LIBGNUNET_PLUGIN_TRANSPORT_INIT (void *cls)
   api->string_to_address = &http_common_plugin_string_to_address;
   api->address_pretty_printer = &http_common_plugin_address_pretty_printer;
   api->get_network = &http_client_plugin_get_network;
+  api->get_network_for_address = &http_client_plugin_get_network_for_address;
   api->update_session_timeout = &http_client_plugin_update_session_timeout;
   api->update_inbound_delay = &http_client_plugin_update_inbound_delay;
   api->setup_monitor = &http_client_plugin_setup_monitor;