(no commit message)
[oweals/gnunet.git] / src / transport / plugin_transport_http.c
index baf063ea6507b9397bec260e93ebb1c854c91f72..5cd611d1f1b5783c1434a90b94b9c1f7960f4180 100644 (file)
  */
 
 #include "platform.h"
+#include "gnunet_common.h"
 #include "gnunet_constants.h"
 #include "gnunet_protocols.h"
 #include "gnunet_connection_lib.h"
-#include "gnunet_server_lib.h"
 #include "gnunet_service_lib.h"
 #include "gnunet_statistics_service.h"
 #include "gnunet_transport_service.h"
 #include "microhttpd.h"
 #include <curl/curl.h>
 
-
-#define DEBUG_CURL GNUNET_YES
 #define DEBUG_HTTP GNUNET_NO
-#define HTTP_CONNECT_TIMEOUT_DBG 10
+#define DEBUG_CURL GNUNET_NO
+#define DEBUG_CONNECTIONS GNUNET_NO
+#define DEBUG_SESSION_SELECTION GNUNET_NO
+
+#define INBOUND GNUNET_NO
+#define OUTBOUND GNUNET_YES
 
 /**
  * Text of the response sent back after the last bytes of a PUT
@@ -69,6 +72,7 @@
  */
 #define HTTP_CONNECT_TIMEOUT 30
 
+
 /**
  * Network format for IPv4 addresses.
  */
@@ -134,7 +138,7 @@ struct HTTP_Message
    * buffer length
    */
   size_t size;
-  
+
   /**
    * Continuation function to call once the transmission buffer
    * has again space available.  NULL if there is no
@@ -149,147 +153,152 @@ struct HTTP_Message
 };
 
 
-struct HTTP_Connection_out
+struct HTTP_PeerContext
 {
-  struct HTTP_Connection_out * next;
-
-  struct HTTP_Connection_out * prev;
-
-  void * addr;
-  size_t addrlen;
-
-  struct HTTP_Message * pending_msgs_head;
-  struct HTTP_Message * pending_msgs_tail;
-
-  char * url;
-  unsigned int put_connected;
-  unsigned int put_send_paused;
-
-  unsigned int get_connected;
-
   /**
-   * curl handle for sending data using HTTP/PUT
-   * outbound data
+   * peer's identity
    */
-  CURL *put_curl_handle;
+  struct GNUNET_PeerIdentity identity;
 
   /**
-   * curl handle for recieving data using HTTP/GET transmission
-   * inbound data
+   * Pointer to the global plugin struct.
    */
-  CURL *get_curl_handle;
-
-  struct Session * session;
-};
-
-struct HTTP_Connection_in
-{
-  struct HTTP_Connection_in * next;
-
-  struct HTTP_Connection_in * prev;
-
-  void * addr;
-  size_t addrlen;
-
-  unsigned int connected;
-  unsigned int send_paused;
+  struct Plugin *plugin;
 
-  struct GNUNET_SERVER_MessageStreamTokenizer * msgtok;
+  /**
+   * Linked list of connections with this peer
+   * head
+   */
+  struct Session * head;
 
-  struct Session * session;
+  /**
+   * Linked list of connections with this peer
+   * tail
+   */
+  struct Session * tail;
 
   /**
-   * Is there a HTTP/PUT in progress?
+   * id for next session
    */
-  int is_put_in_progress;
+  size_t session_id_counter;
 
   /**
-   * Is the http request invalid?
+   * Last session used to send data
    */
-  int is_bad_request;
+  struct Session * last_session;
 };
 
 
-/**
- * Session handle for connections.
- */
 struct Session
 {
-
   /**
    * API requirement.
    */
   struct SessionHeader header;
 
   /**
-   * Stored in a linked list.
+   * next session in linked list
    */
-  struct Session *next;
+  struct Session * next;
 
   /**
-   * Pointer to the global plugin struct.
+   * previous session in linked list
    */
-  struct Plugin *plugin;
+  struct Session * prev;
 
   /**
-   * To whom are we talking to (set to our identity
-   * if we are still waiting for the welcome message)
+   * address of this session
    */
-  struct GNUNET_PeerIdentity identity;
+  void * addr;
 
   /**
-   * Sender's ip address to distinguish between incoming connections
+   * address length
    */
-  void * addr_in;
+  size_t addrlen;
 
-  size_t addr_in_len;
+  /**
+   * target url
+   */
+  char * url;
 
-  void * addr_out;
+  /**
+   * Message queue for outbound messages
+   * head of queue
+   */
+  struct HTTP_Message * pending_msgs_head;
 
-  size_t addr_out_len;
+  /**
+   * Message queue for outbound messages
+   * tail of queue
+   */
+  struct HTTP_Message * pending_msgs_tail;
+
+  /**
+   * partner peer this connection belongs to
+   */
+  struct HTTP_PeerContext * peercontext;
 
   /**
-   * Did we initiate the connection (GNUNET_YES) or the other peer (GNUNET_NO)?
+   * message stream tokenizer for incoming data
    */
-  int is_client;
+  struct GNUNET_SERVER_MessageStreamTokenizer *msgtok;
 
   /**
-   * At what time did we reset last_received last?
+   * session direction
+   * outbound: OUTBOUND (GNUNET_YES)
+   * inbound : INBOUND (GNUNET_NO)
    */
-  struct GNUNET_TIME_Absolute last_quota_update;
+  unsigned int direction;
 
   /**
-   * How many bytes have we received since the "last_quota_update"
-   * timestamp?
+   * is session connected to send data?
    */
-  uint64_t last_received;
+  unsigned int send_connected;
 
   /**
-   * Number of bytes per ms that this peer is allowed
-   * to send to us.
+   * is send connection active?
    */
-  uint32_t quota;
+  unsigned int send_active;
 
   /**
-   * Encoded hash
+   * connection disconnect forced (e.g. from transport)
    */
-  struct GNUNET_CRYPTO_HashAsciiEncoded hash;
+  unsigned int send_force_disconnect;
 
   /**
-   * curl handle for outbound transmissions
+   * is session connected to receive data?
    */
-  CURL *curl_handle;
+  unsigned int recv_connected;
 
   /**
-   * Message tokenizer for incoming data
+   * is receive connection active?
    */
-  //struct GNUNET_SERVER_MessageStreamTokenizer * msgtok;
+  unsigned int recv_active;
 
-  struct HTTP_Connection_out *outbound_connections_head;
-  struct HTTP_Connection_out *outbound_connections_tail;
+  /**
+   * connection disconnect forced (e.g. from transport)
+   */
+  unsigned int recv_force_disconnect;
 
-  struct HTTP_Connection_in *inbound_connections_head;
-  struct HTTP_Connection_in *inbound_connections_tail;
+  /**
+   * id for next session
+   * NOTE: 0 is not an ID, zero is not defined. A correct ID is always > 0
+   */
+  size_t session_id;
+
+  /**
+   * entity managing sending data
+   * outbound session: CURL *
+   * inbound session: mhd_connection *
+   */
+  void * send_endpoint;
+
+  /**
+   * entity managing recieving data
+   * outbound session: CURL *
+   * inbound session: mhd_connection *
+   */
+  void * recv_endpoint;
 };
 
 /**
@@ -302,12 +311,14 @@ struct Plugin
    */
   struct GNUNET_TRANSPORT_PluginEnvironment *env;
 
-  unsigned int port_inbound;
-
   /**
-   * Hashmap for all existing sessions.
+   * Handle for reporting statistics.
    */
-  struct GNUNET_CONTAINER_MultiHashMap *sessions;
+  struct GNUNET_STATISTICS_Handle *stats;
+
+  unsigned int port_inbound;
+
+  struct GNUNET_CONTAINER_MultiHashMap *peers;
 
   /**
    * Daemon for listening for new IPv4 connections.
@@ -332,7 +343,7 @@ struct Plugin
   /**
    * The task sending data
    */
-  GNUNET_SCHEDULER_TaskIdentifier http_server_task_send;
+  GNUNET_SCHEDULER_TaskIdentifier http_curl_task;
 
   /**
    * cURL Multihandle
@@ -344,6 +355,12 @@ struct Plugin
    * This string is used to distinguish between connections and is added to the urls
    */
   struct GNUNET_CRYPTO_HashAsciiEncoded my_ascii_hash_ident;
+
+  struct sockaddr_in * bind4_address;
+  struct sockaddr_in6 * bind6_address;
+  char * bind_hostname;
+  int use_ipv6;
+  int use_ipv4;
 };
 
 
@@ -363,220 +380,289 @@ http_plugin_address_to_string (void *cls,
                                    const void *addr,
                                    size_t addrlen);
 
+
 /**
- * Create a new session
- * @param cls plugin as closure
- * @param addr_in address the peer is using inbound
- * @param addr_len_in address length
- * @param addr_out address the peer is using outbound
- * @param addr_len_out address length
- * @param peer identity
- * @return created session object
+ * Call MHD to process pending ipv4 requests and then go back
+ * and schedule the next run.
  */
-static struct Session * 
-create_session (void * cls, 
-               char * addr_in, 
-               size_t addrlen_in,
-               char * addr_out, 
-               size_t addrlen_out, 
-               const struct GNUNET_PeerIdentity *peer)
-{
-  struct Plugin *plugin = cls;
-  struct Session * cs = GNUNET_malloc ( sizeof( struct Session) );
-
-  GNUNET_assert(cls !=NULL);
-  if (addrlen_in != 0)
-  {
-    cs->addr_in = GNUNET_malloc (addrlen_in);
-    cs->addr_in_len = addrlen_in;
-    memcpy(cs->addr_in,addr_in,addrlen_in);
-  }
+static void http_server_daemon_v4_run (void *cls, const struct GNUNET_SCHEDULER_TaskContext *tc);
+/**
+ * Call MHD to process pending ipv6 requests and then go back
+ * and schedule the next run.
+ */
+static void http_server_daemon_v6_run (void *cls, const struct GNUNET_SCHEDULER_TaskContext *tc);
 
-  if (addrlen_out != 0)
-  {
-    cs->addr_out = GNUNET_malloc (addrlen_out);
-    cs->addr_out_len = addrlen_out;
-    memcpy(cs->addr_out,addr_out,addrlen_out);
-  }
-  cs->plugin = plugin;
-  memcpy(&cs->identity, peer, sizeof (struct GNUNET_PeerIdentity));
-  GNUNET_CRYPTO_hash_to_enc(&cs->identity.hashPubKey,&(cs->hash));
-  cs->outbound_connections_head = NULL;
-  cs->outbound_connections_tail = NULL;
-  return cs;
-}
+/**
+ * Function setting up curl handle and selecting message to send
+ * @param cls plugin
+ * @param ses session to send data to
+ * @param con connection
+ * @return bytes sent to peer
+ */
+static ssize_t send_check_connections (void *cls, struct Session *ps);
 
 /**
- * Check if session for this peer is already existing, otherwise create it
- * @param cls the plugin used
- * @param p peer to get session for
- * @return session found or created
+ * Function setting up file descriptors and scheduling task to run
+ * @param cls closure
+ * @param ses session to send data to
+ * @param
  */
-static struct Session * session_get (void * cls, const struct GNUNET_PeerIdentity *p)
-{
-  struct Plugin *plugin = cls;
-  struct Session *cs;
-  unsigned int res;
+static int curl_schedule(void *cls );
+
 
-  cs = GNUNET_CONTAINER_multihashmap_get (plugin->sessions, &p->hashPubKey);
-  if (cs == NULL)
-  {
-    cs = create_session(plugin, NULL, 0, NULL, 0, p);
-    res = GNUNET_CONTAINER_multihashmap_put ( plugin->sessions,
-                                        &cs->identity.hashPubKey,
-                                        cs,
-                                        GNUNET_CONTAINER_MULTIHASHMAPOPTION_UNIQUE_ONLY);
-    if (res == GNUNET_OK)
-      GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
-                  "New Session `%s' inserted\n", GNUNET_i2s(p));
-  }
-  return cs;
-}
 
-static char * create_url(void * cls, const void * addr, size_t addrlen)
+static char * create_url(void * cls, const void * addr, size_t addrlen, size_t id)
 {
   struct Plugin *plugin = cls;
   char *url = NULL;
 
   GNUNET_assert ((addr!=NULL) && (addrlen != 0));
   GNUNET_asprintf(&url,
-                  "http://%s/%s",
+                  "http://%s/%s;%u",
                   http_plugin_address_to_string(NULL, addr, addrlen),
-                  (char *) (&plugin->my_ascii_hash_ident));
+                  (char *) (&plugin->my_ascii_hash_ident),id);
 
   return url;
 }
 
 /**
- * Check if session already knows this address for a outbound connection to this peer
- * If address not in session, add it to the session
- * @param cls the plugin used
- * @param cs the session
- * @param addr address
- * @param addr_len address length
- * @return the found or created address
+ * Removes a message from the linked list of messages
+ * @param con connection to remove message from
+ * @param msg message to remove
+ * @return GNUNET_SYSERR if msg not found, GNUNET_OK on success
  */
-static struct HTTP_Connection_out * session_check_outbound_address (void * cls, struct Session *cs, const void * addr, size_t addr_len)
+static int remove_http_message (struct Session * ps, struct HTTP_Message * msg)
 {
-  struct Plugin *plugin = cls;
-  struct HTTP_Connection_out * cc = cs->outbound_connections_head;
-  struct HTTP_Connection_out * con = NULL;
+  GNUNET_CONTAINER_DLL_remove(ps->pending_msgs_head,ps->pending_msgs_tail,msg);
+  GNUNET_free(msg);
+  return GNUNET_OK;
+}
+
+/**
+ * Removes a session from the linked list of sessions
+ * @param pc peer context
+ * @param ps session
+ * @param call_msg_cont GNUNET_YES to call pending message continuations, otherwise no
+ * @param call_msg_cont_result, result to call message continuations with
+ * @return GNUNET_SYSERR if msg not found, GNUNET_OK on success
+ */
+static int remove_session (struct HTTP_PeerContext * pc, struct Session * ps,  int call_msg_cont, int call_msg_cont_result)
+{
+  struct HTTP_Message * msg;
+  struct Plugin * plugin = ps->peercontext->plugin;
 
-  GNUNET_assert((addr_len == sizeof (struct IPv4HttpAddress)) || (addr_len == sizeof (struct IPv6HttpAddress)));
+#if DEBUG_CONNECTIONS
+  GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,"Connection %X: removing %s session %X with id %u\n", ps, (ps->direction == INBOUND) ? "inbound" : "outbound", ps, ps->session_id);
+#endif
+  plugin->env->session_end(plugin, &pc->identity, ps);
 
-  while (cc!=NULL)
+  GNUNET_free_non_null (ps->addr);
+  GNUNET_SERVER_mst_destroy (ps->msgtok);
+  GNUNET_free(ps->url);
+
+  msg = ps->pending_msgs_head;
+  while (msg!=NULL)
   {
-    if (addr_len == cc->addrlen)
+    if ((call_msg_cont == GNUNET_YES) && (msg->transmit_cont!=NULL))
     {
-      if (0 == memcmp(cc->addr, addr, addr_len))
-      {
-        con = cc;
-        break;
-      }
+      msg->transmit_cont (msg->transmit_cont_cls,&pc->identity,call_msg_cont_result);
     }
-    cc=cc->next;
+    GNUNET_free(msg);
+    GNUNET_CONTAINER_DLL_remove(ps->pending_msgs_head,ps->pending_msgs_head,msg);
+    msg = ps->pending_msgs_head;
   }
 
-  if (con==NULL)
+  GNUNET_CONTAINER_DLL_remove(pc->head,pc->tail,ps);
+  GNUNET_free(ps);
+  ps = NULL;
+  return GNUNET_OK;
+}
+
+int remove_peer_context_Iterator (void *cls, const GNUNET_HashCode *key, void *value)
+{
+  struct Plugin *plugin = cls;
+  struct HTTP_PeerContext * pc = value;
+  struct Session * ps = pc->head;
+  struct Session * tmp = NULL;
+  struct HTTP_Message * msg = NULL;
+  struct HTTP_Message * msg_tmp = NULL;
+#if DEBUG_HTTP
+  GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,"Freeing context for peer `%s'\n",GNUNET_i2s(&pc->identity));
+#endif
+  while (ps!=NULL)
   {
-    con = GNUNET_malloc(sizeof(struct HTTP_Connection_out) + addr_len);
-    con->addrlen = addr_len;
-    con->addr=&con[1];
-    con->url=create_url(plugin, addr, addr_len);
-    con->put_curl_handle = NULL;
-    con->put_connected = GNUNET_NO;
-    con->get_curl_handle = NULL;
-    con->get_connected = GNUNET_NO;
-    con->session = cs;
-    memcpy(con->addr, addr, addr_len);
-    GNUNET_CONTAINER_DLL_insert(cs->outbound_connections_head,cs->outbound_connections_tail,con);
-    GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,"Created new connection %X to peer `%s'\n",con,GNUNET_i2s(&cs->identity));
+       plugin->env->session_end(plugin, &pc->identity, ps);
+       tmp = ps->next;
+
+    GNUNET_free_non_null (ps->addr);
+    GNUNET_free(ps->url);
+    if (ps->msgtok != NULL)
+      GNUNET_SERVER_mst_destroy (ps->msgtok);
+
+    msg = ps->pending_msgs_head;
+    while (msg!=NULL)
+    {
+      msg_tmp = msg->next;
+      GNUNET_free(msg);
+      msg = msg_tmp;
+    }
+    if (ps->direction==OUTBOUND)
+    {
+      if (ps->send_endpoint!=NULL)
+        curl_easy_cleanup(ps->send_endpoint);
+      if (ps->recv_endpoint!=NULL)
+        curl_easy_cleanup(ps->recv_endpoint);
+    }
+
+    GNUNET_free(ps);
+    ps=tmp;
   }
-  return con;
+  GNUNET_free(pc);
+  return GNUNET_YES;
 }
 
-
 /**
- * Check if session already knows this address for a inbound connection to this peer
- * If address not in session, add it to the session
- * @param cls not needed, can be NULL
- * @param cs the session
- * @param addr address
- * @param addr_len address length
- * @return the found or created address
+ * Add the IP of our network interface to the list of
+ * our external IP addresses.
+ *
+ * @param cls the 'struct Plugin*'
+ * @param name name of the interface
+ * @param isDefault do we think this may be our default interface
+ * @param addr address of the interface
+ * @param addrlen number of bytes in addr
+ * @return GNUNET_OK to continue iterating
  */
-static struct HTTP_Connection_in * session_check_inbound_address (void * cls, struct Session *cs, const void * addr, size_t addr_len)
+static int
+process_interfaces (void *cls,
+                    const char *name,
+                    int isDefault,
+                    const struct sockaddr *addr, socklen_t addrlen)
 {
-  struct HTTP_Connection_in * cc = cs->inbound_connections_head;
-  struct HTTP_Connection_in * con = NULL;
+  struct Plugin *plugin = cls;
+  struct IPv4HttpAddress * t4;
+  struct IPv6HttpAddress * t6;
+  int af;
 
-  GNUNET_assert((addr_len == sizeof (struct IPv4HttpAddress)) || (addr_len == sizeof (struct IPv6HttpAddress)));
 
-  while (cc!=NULL)
-  {
-    if (addr_len == cc->addrlen)
+  GNUNET_assert(cls !=NULL);
+  af = addr->sa_family;
+  if ((af == AF_INET) && (plugin->use_ipv4 == GNUNET_YES) && (plugin->bind6_address == NULL))
     {
-      if (0 == memcmp(cc->addr, addr, addr_len))
+         struct in_addr bnd_cmp = ((struct sockaddr_in *) addr)->sin_addr;
+      t4 = GNUNET_malloc(sizeof(struct IPv4HttpAddress));
+      /* Not skipping loopback addresses
+      if (INADDR_LOOPBACK == ntohl(((struct sockaddr_in *) addr)->sin_addr.s_addr))
       {
-        con = cc;
-        break;
+
+        return GNUNET_OK;
+      }
+      */
+      t4->ipv4_addr = ((struct sockaddr_in *) addr)->sin_addr.s_addr;
+      t4->u_port = htons (plugin->port_inbound);
+      if (plugin->bind4_address != NULL)
+      {
+         if (0 == memcmp(&plugin->bind4_address->sin_addr, &bnd_cmp, sizeof (struct in_addr)))
+         {
+                 plugin->env->notify_address(plugin->env->cls,"http",t4, sizeof (struct IPv4HttpAddress), GNUNET_TIME_UNIT_FOREVER_REL);
+         }
+      }
+      else
+      {
+         plugin->env->notify_address(plugin->env->cls,"http",t4, sizeof (struct IPv4HttpAddress), GNUNET_TIME_UNIT_FOREVER_REL);
       }
+      GNUNET_free (t4);
     }
-    cc=cc->next;
-  }
-
-
-  if (con==NULL)
-  {
-    con = GNUNET_malloc(sizeof(struct HTTP_Connection_in) + addr_len);
-    con->addrlen = addr_len;
-    con->addr=&con[1];
-    con->connected = GNUNET_NO;
-    con->session = cs;
-    memcpy(con->addr, addr, addr_len);
-    GNUNET_CONTAINER_DLL_insert(cs->inbound_connections_head,cs->inbound_connections_tail,con);
-  }
+  else if ((af == AF_INET6) && (plugin->use_ipv6 == GNUNET_YES)  && (plugin->bind4_address == NULL))
+    {
+         struct in6_addr bnd_cmp6 = ((struct sockaddr_in6 *) addr)->sin6_addr;
+      t6 = GNUNET_malloc(sizeof(struct IPv6HttpAddress));
+      if (IN6_IS_ADDR_LINKLOCAL (&((struct sockaddr_in6 *) addr)->sin6_addr))
+        {
+          return GNUNET_OK;
+        }
 
-  GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,"Connection %X for inbound address %s (%s) was found\n",
-              con,
-              GNUNET_i2s(&cs->identity),
-              http_plugin_address_to_string(NULL,con->addr,con->addrlen));
-  return con;
+      if (plugin->bind6_address != NULL)
+      {
+         if (0 == memcmp(&plugin->bind6_address->sin6_addr, &bnd_cmp6, sizeof (struct in6_addr)))
+         {
+             memcpy (&t6->ipv6_addr,
+                     &((struct sockaddr_in6 *) addr)->sin6_addr,
+                     sizeof (struct in6_addr));
+             t6->u6_port = htons (plugin->port_inbound);
+             plugin->env->notify_address(plugin->env->cls,"http",t6,sizeof (struct IPv6HttpAddress) , GNUNET_TIME_UNIT_FOREVER_REL);
+         }
+      }
+      else
+      {
+          memcpy (&t6->ipv6_addr,
+                  &((struct sockaddr_in6 *) addr)->sin6_addr,
+                  sizeof (struct in6_addr));
+          t6->u6_port = htons (plugin->port_inbound);
+          plugin->env->notify_address(plugin->env->cls,"http",t6,sizeof (struct IPv6HttpAddress) , GNUNET_TIME_UNIT_FOREVER_REL);
+      }
+      GNUNET_free (t6);
+    }
+  return GNUNET_OK;
 }
 
 
 /**
  * Callback called by MHD when a connection is terminated
  */
-static void requestCompletedCallback (void *cls, struct MHD_Connection * connection, void **httpSessionCache)
+static void mhd_termination_cb (void *cls, struct MHD_Connection * connection, void **httpSessionCache)
 {
-  struct HTTP_Connection_in * con;
-
-  con = *httpSessionCache;
-  if (con == NULL)
+  struct Session * ps = *httpSessionCache;
+  if (ps == NULL)
     return;
-  GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,"Connection from peer `%s' was terminated\n",GNUNET_i2s(&con->session->identity));
-  /* session set to inactive */
-  con->is_put_in_progress = GNUNET_NO;
-  con->is_bad_request = GNUNET_NO;
+  struct HTTP_PeerContext * pc = ps->peercontext;
+
+  if (connection==ps->recv_endpoint)
+  {
+#if DEBUG_CONNECTIONS
+    GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,"Connection %X: inbound connection from peer `%s' was terminated\n", ps, GNUNET_i2s(&pc->identity));
+#endif
+    ps->recv_active = GNUNET_NO;
+    ps->recv_connected = GNUNET_NO;
+    ps->recv_endpoint = NULL;
+  }
+  if (connection==ps->send_endpoint)
+  {
+
+    ps->send_active = GNUNET_NO;
+    ps->send_connected = GNUNET_NO;
+    ps->send_endpoint = NULL;
+#if DEBUG_CONNECTIONS
+    GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,"Connection %X: outbound connection from peer `%s' was terminated\n", ps, GNUNET_i2s(&pc->identity));
+#endif
+  }
+
+  /* if both connections disconnected, remove session */
+  if ((ps->send_connected == GNUNET_NO) && (ps->recv_connected == GNUNET_NO))
+  {
+    remove_session(pc,ps,GNUNET_YES,GNUNET_SYSERR);
+  }
 }
 
-static void messageTokenizerCallback (void *cls,
-                                      void *client,
-                                      const struct GNUNET_MessageHeader *message)
+static void mhd_write_mst_cb (void *cls,
+                              void *client,
+                              const struct GNUNET_MessageHeader *message)
 {
-  struct HTTP_Connection_in * con = cls;
-  GNUNET_assert(con != NULL);
 
+  struct Session *ps  = cls;
+  struct HTTP_PeerContext *pc = ps->peercontext;
+  GNUNET_assert(ps != NULL);
+  GNUNET_assert(pc != NULL);
+#if DEBUG_HTTP
   GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
-             "Forwarding message to transport service, type %u and size %u from `%s' (`%s')\n",
+             "Connection %X: Forwarding message to transport service, type %u and size %u from `%s' (`%s')\n",
+             ps,
              ntohs(message->type),
               ntohs(message->size),
-             GNUNET_i2s(&(con->session->identity)),http_plugin_address_to_string(NULL,con->addr,con->addrlen));
-
-  con->session->plugin->env->receive (con->session->plugin->env->cls,
-                           &con->session->identity,
-                           message, 1, con->session,
+             GNUNET_i2s(&(ps->peercontext)->identity),http_plugin_address_to_string(NULL,ps->addr,ps->addrlen));
+#endif
+  pc->plugin->env->receive (ps->peercontext->plugin->env->cls,
+                           &pc->identity,
+                           message, 1, ps,
                            NULL,
                            0);
 }
@@ -585,7 +671,7 @@ static void messageTokenizerCallback (void *cls,
  * Check if ip is allowed to connect.
  */
 static int
-acceptPolicyCallback (void *cls,
+mhd_accept_cb (void *cls,
                       const struct sockaddr *addr, socklen_t addr_len)
 {
 #if 0
@@ -595,10 +681,47 @@ acceptPolicyCallback (void *cls,
   return MHD_YES;
 }
 
-int server_read_callback (void *cls, uint64_t pos, char *buf, int max)
+int mhd_send_callback (void *cls, uint64_t pos, char *buf, int max)
 {
-  int bytes_read = -1;
-  GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "server_read_callback\n");
+  int bytes_read = 0;
+
+  struct Session * ps = cls;
+  struct HTTP_PeerContext * pc;
+  struct HTTP_Message * msg;
+
+  GNUNET_assert (ps!=NULL);
+  pc = ps->peercontext;
+  msg = ps->pending_msgs_tail;
+  if (ps->send_force_disconnect==GNUNET_YES)
+  {
+#if DEBUG_CONNECTIONS
+    GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,"Connection %X: outbound forced to disconnect\n",ps);
+#endif
+    return -1;
+  }
+
+  if (msg!=NULL)
+  {
+    if ((msg->size-msg->pos) <= max)
+    {
+      memcpy(buf,&msg->buf[msg->pos],(msg->size-msg->pos));
+      bytes_read = msg->size-msg->pos;
+      msg->pos+=(msg->size-msg->pos);
+    }
+    else
+    {
+      memcpy(buf,&msg->buf[msg->pos],max);
+      msg->pos+=max;
+      bytes_read = max;
+    }
+
+    if (msg->pos==msg->size)
+    {
+      if (NULL!=msg->transmit_cont)
+        msg->transmit_cont (msg->transmit_cont_cls,&pc->identity,GNUNET_OK);
+      remove_http_message(ps,msg);
+    }
+  }
   return bytes_read;
 }
 
@@ -610,7 +733,7 @@ int server_read_callback (void *cls, uint64_t pos, char *buf, int max)
  * already exists and create a new one if not.
  */
 static int
-accessHandlerCallback (void *cls,
+mdh_access_cb (void *cls,
                        struct MHD_Connection *mhd_connection,
                        const char *url,
                        const char *method,
@@ -620,46 +743,81 @@ accessHandlerCallback (void *cls,
 {
   struct Plugin *plugin = cls;
   struct MHD_Response *response;
-  struct Session * cs;
-  struct HTTP_Connection_in * con;
   const union MHD_ConnectionInfo * conn_info;
+
   struct sockaddr_in  *addrin;
   struct sockaddr_in6 *addrin6;
+
   char address[INET6_ADDRSTRLEN+14];
   struct GNUNET_PeerIdentity pi_in;
-  int res = GNUNET_NO;
-  int send_error_to_client;
+  size_t id_num = 0;
+
   struct IPv4HttpAddress ipv4addr;
   struct IPv6HttpAddress ipv6addr;
 
+  struct HTTP_PeerContext *pc;
+  struct Session *ps = NULL;
+  struct Session *ps_tmp = NULL;
+
+  int res = GNUNET_NO;
+  int send_error_to_client;
+  void * addr;
+  size_t addr_len;
+
   GNUNET_assert(cls !=NULL);
   send_error_to_client = GNUNET_NO;
+
   if (NULL == *httpSessionCache)
   {
     /* check url for peer identity , if invalid send HTTP 404*/
-    res = GNUNET_CRYPTO_hash_from_string ( &url[1], &(pi_in.hashPubKey));
+    size_t len = strlen(&url[1]);
+    char * peer = GNUNET_malloc(104+1);
+
+    if ((len>104) && (url[104]==';'))
+    {
+        char * id = GNUNET_malloc((len-104)+1);
+        strcpy(id,&url[105]);
+        memcpy(peer,&url[1],103);
+        peer[103] = '\0';
+        id_num = strtoul ( id, NULL , 10);
+        GNUNET_free(id);
+    }
+    res = GNUNET_CRYPTO_hash_from_string (peer, &(pi_in.hashPubKey));
+    GNUNET_free(peer);
     if ( GNUNET_SYSERR == res )
     {
       response = MHD_create_response_from_data (strlen (HTTP_ERROR_RESPONSE),HTTP_ERROR_RESPONSE, MHD_NO, MHD_NO);
       res = MHD_queue_response (mhd_connection, MHD_HTTP_NOT_FOUND, response);
       MHD_destroy_response (response);
+#if DEBUG_CONNECTIONS
       if (res == MHD_YES)
         GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,"Peer has no valid ident, sent HTTP 1.1/404\n");
       else
         GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,"Peer has no valid ident, could not send error\n");
+#endif
       return res;
     }
   }
   else
   {
-    con = *httpSessionCache;
-    cs = con->session;
+    ps = *httpSessionCache;
+    pc = ps->peercontext;
   }
 
   if (NULL == *httpSessionCache)
   {
-    /* get session for peer identity */
-    cs = session_get (plugin ,&pi_in);
+    /* get peer context */
+    pc = GNUNET_CONTAINER_multihashmap_get (plugin->peers, &pi_in.hashPubKey);
+    /* Peer unknown */
+    if (pc==NULL)
+    {
+      pc = GNUNET_malloc(sizeof (struct HTTP_PeerContext));
+      pc->plugin = plugin;
+      pc->session_id_counter=1;
+      pc->last_session = NULL;
+      memcpy(&pc->identity, &pi_in, sizeof(struct GNUNET_PeerIdentity));
+      GNUNET_CONTAINER_multihashmap_put(plugin->peers, &pc->identity.hashPubKey, pc, GNUNET_CONTAINER_MULTIHASHMAPOPTION_UNIQUE_ONLY);
+    }
 
     conn_info = MHD_get_connection_info(mhd_connection, MHD_CONNECTION_INFO_CLIENT_ADDRESS );
     /* Incoming IPv4 connection */
@@ -669,7 +827,8 @@ accessHandlerCallback (void *cls,
       inet_ntop(addrin->sin_family, &(addrin->sin_addr),address,INET_ADDRSTRLEN);
       memcpy(&ipv4addr.ipv4_addr,&(addrin->sin_addr),sizeof(struct in_addr));
       ipv4addr.u_port = addrin->sin_port;
-      con = session_check_inbound_address (plugin, cs, (const void *) &ipv4addr, sizeof (struct IPv4HttpAddress));
+      addr = &ipv4addr;
+      addr_len = sizeof(struct IPv4HttpAddress);
     }
     /* Incoming IPv6 connection */
     if ( AF_INET6 == conn_info->client_addr->sin_family)
@@ -678,49 +837,96 @@ accessHandlerCallback (void *cls,
       inet_ntop(addrin6->sin6_family, &(addrin6->sin6_addr),address,INET6_ADDRSTRLEN);
       memcpy(&ipv6addr.ipv6_addr,&(addrin6->sin6_addr),sizeof(struct in6_addr));
       ipv6addr.u6_port = addrin6->sin6_port;
-      con = session_check_inbound_address (plugin, cs, &ipv6addr, sizeof (struct IPv6HttpAddress));
+      addr = &ipv6addr;
+      addr_len = sizeof(struct IPv6HttpAddress);
+    }
+
+    ps = NULL;
+    /* only inbound sessions here */
+
+    ps_tmp = pc->head;
+    while (ps_tmp!=NULL)
+    {
+      if ((ps_tmp->direction==INBOUND) && (ps_tmp->session_id == id_num) && (id_num!=0))
+      {
+        if ((ps_tmp->recv_force_disconnect!=GNUNET_YES) && (ps_tmp->send_force_disconnect!=GNUNET_YES))
+        ps=ps_tmp;
+        break;
+      }
+      ps_tmp=ps_tmp->next;
     }
-    /* Set closure and update current session*/
 
-    *httpSessionCache = con;
-    if (con->msgtok==NULL)
-      con->msgtok = GNUNET_SERVER_mst_create (GNUNET_SERVER_MAX_MESSAGE_SIZE - 1, &messageTokenizerCallback, con);
+    if (ps==NULL)
+    {
+      ps = GNUNET_malloc(sizeof (struct Session));
+      ps->addr = GNUNET_malloc(addr_len);
+      memcpy(ps->addr,addr,addr_len);
+      ps->addrlen = addr_len;
+      ps->direction=INBOUND;
+      ps->pending_msgs_head = NULL;
+      ps->pending_msgs_tail = NULL;
+      ps->send_connected=GNUNET_NO;
+      ps->send_active=GNUNET_NO;
+      ps->recv_connected=GNUNET_NO;
+      ps->recv_active=GNUNET_NO;
+      ps->peercontext=pc;
+      ps->session_id =id_num;
+      ps->url = create_url (plugin, ps->addr, ps->addrlen, ps->session_id);
+      GNUNET_CONTAINER_DLL_insert(pc->head,pc->tail,ps);
+    }
 
-    GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,"HTTP Daemon has new an incoming `%s' request from peer `%s' (`%s')\n",
+    *httpSessionCache = ps;
+    if (ps->msgtok==NULL)
+      ps->msgtok = GNUNET_SERVER_mst_create (&mhd_write_mst_cb, ps);
+#if DEBUG_HTTP
+    GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,"Connection %X: HTTP Daemon has new an incoming `%s' request from peer `%s' (`%s')\n",
+                ps,
                 method,
-                GNUNET_i2s(&cs->identity),
-                http_plugin_address_to_string(NULL, con->addr, con->addrlen));
+                GNUNET_i2s(&pc->identity),
+                http_plugin_address_to_string(NULL, ps->addr, ps->addrlen));
+#endif
   }
 
   /* Is it a PUT or a GET request */
   if (0 == strcmp (MHD_HTTP_METHOD_PUT, method))
   {
-
-
-    if ((*upload_data_size == 0) && (con->is_put_in_progress==GNUNET_NO))
+    if (ps->recv_force_disconnect == GNUNET_YES)
     {
-      con->is_put_in_progress = GNUNET_YES;
+#if DEBUG_CONNECTIONS
+      GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,"Connection %X: inbound connection was forced to disconnect\n",ps);
+#endif
+      ps->recv_active = GNUNET_NO;
+      return MHD_NO;
+    }
+    if ((*upload_data_size == 0) && (ps->recv_active==GNUNET_NO))
+    {
+      ps->recv_endpoint = mhd_connection;
+      ps->recv_connected = GNUNET_YES;
+      ps->recv_active = GNUNET_YES;
+      ps->recv_force_disconnect = GNUNET_NO;
+#if DEBUG_CONNECTIONS
+      GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,"Connection %X: inbound PUT connection connected\n",ps);
+#endif
       return MHD_YES;
     }
 
     /* Transmission of all data complete */
-    if ((*upload_data_size == 0) && (con->is_put_in_progress == GNUNET_YES))
+    if ((*upload_data_size == 0) && (ps->recv_active == GNUNET_YES))
     {
-        response = MHD_create_response_from_data (strlen (HTTP_PUT_RESPONSE),HTTP_PUT_RESPONSE, MHD_NO, MHD_NO);
-        res = MHD_queue_response (mhd_connection, MHD_HTTP_OK, response);
-        GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,"Sent HTTP/1.1: 200 OK as PUT Response\n",HTTP_PUT_RESPONSE, strlen (HTTP_PUT_RESPONSE), res );
-        MHD_destroy_response (response);
-        return MHD_YES;
-
-      con->is_put_in_progress = GNUNET_NO;
-      con->is_bad_request = GNUNET_NO;
-      return res;
+      response = MHD_create_response_from_data (strlen (HTTP_PUT_RESPONSE),HTTP_PUT_RESPONSE, MHD_NO, MHD_NO);
+      res = MHD_queue_response (mhd_connection, MHD_HTTP_OK, response);
+#if DEBUG_CONNECTIONS
+      GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,"Connection %X: Sent HTTP/1.1: 200 OK as PUT Response\n",ps);
+#endif
+      MHD_destroy_response (response);
+      ps->recv_active=GNUNET_NO;
+      return MHD_YES;
     }
 
     /* Recieving data */
-    if ((*upload_data_size > 0) && (con->is_put_in_progress == GNUNET_YES))
+    if ((*upload_data_size > 0) && (ps->recv_active == GNUNET_YES))
     {
-      res = GNUNET_SERVER_mst_receive(con->msgtok, con, upload_data,*upload_data_size, GNUNET_NO, GNUNET_NO);
+      res = GNUNET_SERVER_mst_receive(ps->msgtok, ps, upload_data,*upload_data_size, GNUNET_NO, GNUNET_NO);
       (*upload_data_size) = 0;
       return MHD_YES;
     }
@@ -729,51 +935,29 @@ accessHandlerCallback (void *cls,
   }
   if ( 0 == strcmp (MHD_HTTP_METHOD_GET, method) )
   {
-    GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,"Got GET Request\n");
-    GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,"URL: `%s'\n",url);
-
-    /* check url for peer identity , if invalid send HTTP 404*/
-    res = GNUNET_CRYPTO_hash_from_string ( &url[1], &(pi_in.hashPubKey));
-
-    if ( GNUNET_SYSERR == res )
+    if (ps->send_force_disconnect == GNUNET_YES)
     {
-      response = MHD_create_response_from_data (strlen (HTTP_ERROR_RESPONSE),HTTP_ERROR_RESPONSE, MHD_NO, MHD_NO);
-      res = MHD_queue_response (mhd_connection, MHD_HTTP_NOT_FOUND, response);
-      MHD_destroy_response (response);
-      if (res == MHD_YES)
-        GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,"Peer has no valid ident, sent HTTP 1.1/404\n");
-      else
-        GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,"Peer has no valid ident, could not send error\n");
-      return res;
+#if DEBUG_CONNECTIONS
+      GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,"Connection %X: outbound connection was  forced to disconnect\n",ps);
+#endif
+      ps->send_active = GNUNET_NO;
+      return MHD_NO;
     }
-
-    response = MHD_create_response_from_callback(-1,32 * 1024, &server_read_callback, cs, NULL);
-    res = MHD_queue_response (mhd_connection, MHD_HTTP_NOT_FOUND, response);
-    MHD_destroy_response (response);
-
-    GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,"HTTP Daemon has new an incoming `%s' request from peer `%s' (`%s')\n",
-                method,
-                GNUNET_i2s(&cs->identity),
-                http_plugin_address_to_string(NULL, con->addr, con->addrlen));
-
-    return res;
-
+         ps->send_connected = GNUNET_YES;
+         ps->send_active = GNUNET_YES;
+         ps->send_endpoint = mhd_connection;
+         ps->send_force_disconnect = GNUNET_NO;
+#if DEBUG_CONNECTIONS
+         GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,"Connection %X: inbound GET connection connected\n",ps);
+#endif
+         response = MHD_create_response_from_callback(-1,32 * 1024, &mhd_send_callback, ps, NULL);
+         res = MHD_queue_response (mhd_connection, MHD_HTTP_OK, response);
+         MHD_destroy_response (response);
+         return MHD_YES;
   }
   return MHD_NO;
 }
 
-
-/**
- * Call MHD to process pending ipv4 requests and then go back
- * and schedule the next run.
- */
-static void http_server_daemon_v4_run (void *cls, const struct GNUNET_SCHEDULER_TaskContext *tc);
-/**
- * Call MHD to process pending ipv6 requests and then go back
- * and schedule the next run.
- */
-static void http_server_daemon_v6_run (void *cls, const struct GNUNET_SCHEDULER_TaskContext *tc);
-
 /**
  * Function that queries MHD's select sets and
  * starts the task waiting for them.
@@ -819,6 +1003,12 @@ http_server_daemon_prepare (void * cls, struct MHD_Daemon *daemon_handle)
   GNUNET_NETWORK_fdset_copy_native (wes, &es, max);
   if (daemon_handle == plugin->http_server_daemon_v4)
   {
+       if (plugin->http_server_task_v4 != GNUNET_SCHEDULER_NO_TASK)
+       {
+               GNUNET_SCHEDULER_cancel(plugin->env->sched, plugin->http_server_task_v4);
+               plugin->http_server_daemon_v4 = GNUNET_SCHEDULER_NO_TASK;
+       }
+
     ret = GNUNET_SCHEDULER_add_select (plugin->env->sched,
                                        GNUNET_SCHEDULER_PRIORITY_DEFAULT,
                                        GNUNET_SCHEDULER_NO_TASK,
@@ -830,6 +1020,12 @@ http_server_daemon_prepare (void * cls, struct MHD_Daemon *daemon_handle)
   }
   if (daemon_handle == plugin->http_server_daemon_v6)
   {
+       if (plugin->http_server_task_v6 != GNUNET_SCHEDULER_NO_TASK)
+       {
+               GNUNET_SCHEDULER_cancel(plugin->env->sched, plugin->http_server_task_v6);
+               plugin->http_server_task_v6 = GNUNET_SCHEDULER_NO_TASK;
+       }
+
     ret = GNUNET_SCHEDULER_add_select (plugin->env->sched,
                                        GNUNET_SCHEDULER_PRIORITY_DEFAULT,
                                        GNUNET_SCHEDULER_NO_TASK,
@@ -855,8 +1051,7 @@ static void http_server_daemon_v4_run (void *cls,
   struct Plugin *plugin = cls;
 
   GNUNET_assert(cls !=NULL);
-  if (plugin->http_server_task_v4 != GNUNET_SCHEDULER_NO_TASK)
-    plugin->http_server_task_v4 = GNUNET_SCHEDULER_NO_TASK;
+  plugin->http_server_task_v4 = GNUNET_SCHEDULER_NO_TASK;
 
   if (0 != (tc->reason & GNUNET_SCHEDULER_REASON_SHUTDOWN))
     return;
@@ -877,8 +1072,7 @@ static void http_server_daemon_v6_run (void *cls,
   struct Plugin *plugin = cls;
 
   GNUNET_assert(cls !=NULL);
-  if (plugin->http_server_task_v6 != GNUNET_SCHEDULER_NO_TASK)
-    plugin->http_server_task_v6 = GNUNET_SCHEDULER_NO_TASK;
+  plugin->http_server_task_v6 = GNUNET_SCHEDULER_NO_TASK;
 
   if (0 != (tc->reason & GNUNET_SCHEDULER_REASON_SHUTDOWN))
     return;
@@ -888,25 +1082,84 @@ static void http_server_daemon_v6_run (void *cls,
   return;
 }
 
-/**
- * Removes a message from the linked list of messages
- * @param con connection to remove message from
- * @param msg message to remove
- * @return GNUNET_SYSERR if msg not found, GNUNET_OK on success
- */
-
-static int remove_http_message(struct HTTP_Connection_out * con, struct HTTP_Message * msg)
+static size_t curl_get_header_cb( void *ptr, size_t size, size_t nmemb, void *stream)
 {
-  GNUNET_CONTAINER_DLL_remove(con->pending_msgs_head,con->pending_msgs_tail,msg);
-  GNUNET_free(msg);
-  return GNUNET_OK;
-}
+  struct Session * ps = stream;
 
+  char * tmp;
+  size_t len = size * nmemb;
+  long http_result = 0;
+  int res;
+  /* Getting last http result code */
+  if (ps->recv_connected==GNUNET_NO)
+  {
+    GNUNET_assert(NULL!=ps);
+    res = curl_easy_getinfo(ps->recv_endpoint, CURLINFO_RESPONSE_CODE, &http_result);
+    if (CURLE_OK == res)
+    {
+      if (http_result == 200)
+      {
+        ps->recv_connected = GNUNET_YES;
+        ps->recv_active = GNUNET_YES;
+#if DEBUG_CONNECTIONS
+        GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,"Connection %X: connected to recieve data\n",ps);
+#endif
+        // Calling send_check_connections again since receive is established
+        send_check_connections (ps->peercontext->plugin, ps);
+      }
+    }
+  }
 
-static size_t header_function( void *ptr, size_t size, size_t nmemb, void *stream)
+  tmp = NULL;
+  if ((size * nmemb) < SIZE_MAX)
+    tmp = GNUNET_malloc (len+1);
+
+  if ((tmp != NULL) && (len > 0))
+  {
+    memcpy(tmp,ptr,len);
+    if (len>=2)
+    {
+      if (tmp[len-2] == 13)
+        tmp[len-2]= '\0';
+    }
+  }
+  if (NULL != tmp)
+    GNUNET_free (tmp);
+
+  return size * nmemb;
+}
+
+static size_t curl_put_header_cb( void *ptr, size_t size, size_t nmemb, void *stream)
 {
+  struct Session * ps = stream;
+
   char * tmp;
   size_t len = size * nmemb;
+  long http_result = 0;
+  int res;
+
+  /* Getting last http result code */
+  GNUNET_assert(NULL!=ps);
+  res = curl_easy_getinfo(ps->send_endpoint, CURLINFO_RESPONSE_CODE, &http_result);
+  if (CURLE_OK == res)
+  {
+    if ((http_result == 100) && (ps->send_connected==GNUNET_NO))
+    {
+      ps->send_connected = GNUNET_YES;
+      ps->send_active = GNUNET_YES;
+#if DEBUG_CONNECTIONS
+      GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,"Connection %X: connected to send data\n",ps);
+#endif
+    }
+    if ((http_result == 200) && (ps->send_connected==GNUNET_YES))
+    {
+      ps->send_connected = GNUNET_NO;
+      ps->send_active = GNUNET_NO;
+#if DEBUG_CONNECTIONS
+      GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,"Connection %X: sending disconnected\n",ps);
+#endif
+    }
+  }
 
   tmp = NULL;
   if ((size * nmemb) < SIZE_MAX)
@@ -920,9 +1173,6 @@ static size_t header_function( void *ptr, size_t size, size_t nmemb, void *strea
       if (tmp[len-2] == 13)
         tmp[len-2]= '\0';
     }
-#if DEBUG_HTTP
-    GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Header: `%s'\n",tmp);
-#endif
   }
   if (NULL != tmp)
     GNUNET_free (tmp);
@@ -939,21 +1189,27 @@ static size_t header_function( void *ptr, size_t size, size_t nmemb, void *strea
  * @param ptr source pointer, passed to the libcurl handle
  * @return bytes written to stream
  */
-static size_t send_read_callback(void *stream, size_t size, size_t nmemb, void *ptr)
+static size_t curl_send_cb(void *stream, size_t size, size_t nmemb, void *ptr)
 {
-  struct HTTP_Connection_out * con = ptr;
-  struct HTTP_Message * msg = con->pending_msgs_tail;
+  struct Session * ps = ptr;
+  struct HTTP_Message * msg = ps->pending_msgs_tail;
   size_t bytes_sent;
   size_t len;
 
-  if (con->pending_msgs_tail == NULL)
+  if (ps->send_active == GNUNET_NO)
+       return CURL_READFUNC_PAUSE;
+
+
+  if ((ps->pending_msgs_tail == NULL) && (ps->send_active == GNUNET_YES))
   {
-    GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,"Connection %X: No Message to send, pausing connection\n",con);
-    con->put_send_paused = GNUNET_YES;
+#if DEBUG_CONNECTIONS
+    GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,"Connection %X: No Message to send, pausing connection\n",ps);
+#endif
+    ps->send_active = GNUNET_NO;
     return CURL_READFUNC_PAUSE;
   }
 
-  msg = con->pending_msgs_tail;
+  msg = ps->pending_msgs_tail;
   /* data to send */
   if (msg->pos < msg->size)
   {
@@ -981,15 +1237,41 @@ static size_t send_read_callback(void *stream, size_t size, size_t nmemb, void *
 
   if ( msg->pos == msg->size)
   {
-    GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,"Connection %X: Message with %u bytes sent, removing message from queue \n",con, msg->pos);
+#if DEBUG_CONNECTIONS
+    GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,"Connection %X: Message with %u bytes sent, removing message from queue \n",ps, msg->pos);
+#endif
     /* Calling transmit continuation  */
-    if (( NULL != con->pending_msgs_tail) && (NULL != con->pending_msgs_tail->transmit_cont))
-      msg->transmit_cont (con->pending_msgs_tail->transmit_cont_cls,&(con->session)->identity,GNUNET_OK);
-    remove_http_message(con, msg);
+    if (( NULL != ps->pending_msgs_tail) && (NULL != ps->pending_msgs_tail->transmit_cont))
+      msg->transmit_cont (ps->pending_msgs_tail->transmit_cont_cls,&(ps->peercontext)->identity,GNUNET_OK);
+    remove_http_message(ps, msg);
   }
   return bytes_sent;
 }
 
+static void curl_receive_mst_cb  (void *cls,
+                                void *client,
+                                const struct GNUNET_MessageHeader *message)
+{
+  struct Session *ps  = cls;
+  struct HTTP_PeerContext *pc = ps->peercontext;
+  GNUNET_assert(ps != NULL);
+  GNUNET_assert(pc != NULL);
+#if DEBUG_HTTP
+  GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
+              "Connection %X: Forwarding message to transport service, type %u and size %u from `%s' (`%s')\n",
+              ps,
+              ntohs(message->type),
+              ntohs(message->size),
+              GNUNET_i2s(&(pc->identity)),http_plugin_address_to_string(NULL,ps->addr,ps->addrlen));
+#endif
+  pc->plugin->env->receive (pc->plugin->env->cls,
+                            &pc->identity,
+                            message, 1, ps,
+                            ps->addr,
+                            ps->addrlen);
+}
+
+
 /**
 * Callback method used with libcurl
 * Method is called when libcurl needs to write data during sending
@@ -999,143 +1281,18 @@ static size_t send_read_callback(void *stream, size_t size, size_t nmemb, void *
 * @param ptr destination pointer, passed to the libcurl handle
 * @return bytes read from stream
 */
-static size_t send_write_callback( void *stream, size_t size, size_t nmemb, void *ptr)
-{
-  char * data = NULL;
-
-  if ((size * nmemb) < SIZE_MAX)
-    data = GNUNET_malloc(size*nmemb +1);
-  if (data != NULL)
-  {
-    memcpy( data, stream, size*nmemb);
-    data[size*nmemb] = '\0';
-    free (data);
-  }
-  return (size * nmemb);
-
-}
-
-/**
- * Function setting up file descriptors and scheduling task to run
- * @param cls closure
- * @param ses session to send data to
- * @return bytes sent to peer
- */
-static size_t send_schedule(void *cls, struct Session* ses );
-
-
-
-/**
- * Function setting up curl handle and selecting message to send
- * @param cls plugin
- * @param ses session to send data to
- * @param con connection
- * @return bytes sent to peer
- */
-static ssize_t send_initiate (void *cls, struct Session* ses , struct HTTP_Connection_out *con)
+static size_t curl_receive_cb( void *stream, size_t size, size_t nmemb, void *ptr)
 {
-  struct Plugin *plugin = cls;
-  int bytes_sent = 0;
-  CURLMcode mret;
-  struct HTTP_Message * msg;
-  struct GNUNET_TIME_Relative timeout = GNUNET_CONSTANTS_IDLE_CONNECTION_TIMEOUT;
-
-  GNUNET_assert(cls !=NULL);
-
-#if 0
-  if (con->get_connected == GNUNET_NO)
-  {
-    if (con->get_curl_handle == NULL)
-      con->get_curl_handle = curl_easy_init();
-
-#if DEBUG_CURL
-    curl_easy_setopt(con->get_curl_handle, CURLOPT_VERBOSE, 1L);
+  struct Session * ps = ptr;
+#if DEBUG_CONNECTIONS
+  GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,"Connection %X: %u bytes received\n",ps, size*nmemb);
 #endif
-    curl_easy_setopt(con->get_curl_handle, CURLOPT_URL, con->url);
-    //curl_easy_setopt(con->put_curl_handle, CURLOPT_PUT, 1L);
-    curl_easy_setopt(con->get_curl_handle, CURLOPT_HEADERFUNCTION, &header_function);
-    curl_easy_setopt(con->get_curl_handle, CURLOPT_WRITEHEADER, con);
-    curl_easy_setopt(con->get_curl_handle, CURLOPT_READFUNCTION, send_read_callback);
-    curl_easy_setopt(con->get_curl_handle, CURLOPT_READDATA, con);
-    curl_easy_setopt(con->get_curl_handle, CURLOPT_WRITEFUNCTION, send_write_callback);
-    curl_easy_setopt(con->get_curl_handle, CURLOPT_READDATA, con);
-    curl_easy_setopt(con->get_curl_handle, CURLOPT_TIMEOUT, (long) timeout.value);
-    curl_easy_setopt(con->get_curl_handle, CURLOPT_PRIVATE, con);
-    curl_easy_setopt(con->get_curl_handle, CURLOPT_CONNECTTIMEOUT, HTTP_CONNECT_TIMEOUT_DBG);
-    curl_easy_setopt(con->get_curl_handle, CURLOPT_BUFFERSIZE, GNUNET_SERVER_MAX_MESSAGE_SIZE);
-
-    mret = curl_multi_add_handle(plugin->multi_handle, con->get_curl_handle);
-    if (mret != CURLM_OK)
-    {
-      GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
-                  _("%s failed at %s:%d: `%s'\n"),
-                  "curl_multi_add_handle", __FILE__, __LINE__,
-                  curl_multi_strerror (mret));
-      return -1;
-    }
-
-    GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,"Connection %X: inbound not connected, initiating connection\n",con);
-  }
-#endif
-
-  /* PUT already connected, no need to initiate connection */
-  if ((con->put_connected == GNUNET_YES) && (con->put_curl_handle != NULL))
-  {
-    if (con->put_send_paused == GNUNET_NO)
-    {
-      GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,"Connection %X: outbound active, enqueueing message\n",con);
-      return bytes_sent;
-    }
-    if (con->put_send_paused == GNUNET_YES)
-    {
-      GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,"Connection %X: outbound paused, unpausing existing connection and enqueueing message\n",con);
-      curl_easy_pause(con->put_curl_handle,CURLPAUSE_CONT);
-      con->put_send_paused=GNUNET_NO;
-      return bytes_sent;
-    }
-  }
-
-
-  /* not connected, initiate connection */
-  if ( NULL == con->put_curl_handle)
-    con->put_curl_handle = curl_easy_init();
-  GNUNET_assert (con->put_curl_handle != NULL);
-  GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,"Connection %X: outbound not connected, initiating connection\n",con);
-
-  GNUNET_assert (NULL != con->pending_msgs_tail);
-  msg = con->pending_msgs_tail;
+  GNUNET_SERVER_mst_receive(ps->msgtok, ps, stream, size*nmemb, GNUNET_NO, GNUNET_NO);
+  return (size * nmemb);
 
-#if DEBUG_CURL
-  curl_easy_setopt(con->put_curl_handle, CURLOPT_VERBOSE, 1L);
-#endif
-  curl_easy_setopt(con->put_curl_handle, CURLOPT_URL, con->url);
-  curl_easy_setopt(con->put_curl_handle, CURLOPT_PUT, 1L);
-  curl_easy_setopt(con->put_curl_handle, CURLOPT_HEADERFUNCTION, &header_function);
-  curl_easy_setopt(con->put_curl_handle, CURLOPT_WRITEHEADER, con);
-  curl_easy_setopt(con->put_curl_handle, CURLOPT_READFUNCTION, send_read_callback);
-  curl_easy_setopt(con->put_curl_handle, CURLOPT_READDATA, con);
-  curl_easy_setopt(con->put_curl_handle, CURLOPT_WRITEFUNCTION, send_write_callback);
-  curl_easy_setopt(con->put_curl_handle, CURLOPT_READDATA, con);
-  curl_easy_setopt(con->put_curl_handle, CURLOPT_TIMEOUT, (long) timeout.value);
-  curl_easy_setopt(con->put_curl_handle, CURLOPT_PRIVATE, con);
-  curl_easy_setopt(con->put_curl_handle, CURLOPT_CONNECTTIMEOUT, HTTP_CONNECT_TIMEOUT_DBG);
-  curl_easy_setopt(con->put_curl_handle, CURLOPT_BUFFERSIZE, GNUNET_SERVER_MAX_MESSAGE_SIZE);
-
-  mret = curl_multi_add_handle(plugin->multi_handle, con->put_curl_handle);
-  if (mret != CURLM_OK)
-  {
-    GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
-                _("%s failed at %s:%d: `%s'\n"),
-                "curl_multi_add_handle", __FILE__, __LINE__,
-                curl_multi_strerror (mret));
-    return -1;
-  }
-  con->put_connected = GNUNET_YES;
-  bytes_sent = send_schedule (plugin, ses);
-  return bytes_sent;
 }
 
-static void send_execute (void *cls,
+static void curl_perform (void *cls,
              const struct GNUNET_SCHEDULER_TaskContext *tc)
 {
   struct Plugin *plugin = cls;
@@ -1143,12 +1300,14 @@ static void send_execute (void *cls,
   int running;
   struct CURLMsg *msg;
   CURLMcode mret;
-  struct HTTP_Connection_out * con = NULL;
-  struct Session * cs = NULL;
+  struct Session *ps = NULL;
+  struct HTTP_PeerContext *pc = NULL;
+  struct HTTP_Message * cur_msg = NULL;
   long http_result;
 
   GNUNET_assert(cls !=NULL);
-  plugin->http_server_task_send = GNUNET_SCHEDULER_NO_TASK;
+
+  plugin->http_curl_task = GNUNET_SCHEDULER_NO_TASK;
   if (0 != (tc->reason & GNUNET_SCHEDULER_REASON_SHUTDOWN))
     return;
 
@@ -1156,20 +1315,20 @@ static void send_execute (void *cls,
     {
       running = 0;
       mret = curl_multi_perform (plugin->multi_handle, &running);
-      if (running < handles_last_run)
+      if ((running < handles_last_run) && (running>0))
         {
           do
             {
 
               msg = curl_multi_info_read (plugin->multi_handle, &running);
-              if (msg == NULL)
-                break;
+              if (running == 0)
+                 break;
               /* get session for affected curl handle */
               GNUNET_assert ( msg->easy_handle != NULL );
-              curl_easy_getinfo(msg->easy_handle, CURLINFO_PRIVATE, (char *) &con);
-              GNUNET_assert ( con != NULL );
-              cs = con->session;
-              GNUNET_assert ( cs != NULL );
+              curl_easy_getinfo(msg->easy_handle, CURLINFO_PRIVATE, (char *) &ps);
+              GNUNET_assert ( ps != NULL );
+              pc = ps->peercontext;
+              GNUNET_assert ( pc != NULL );
               switch (msg->msg)
                 {
 
@@ -1177,54 +1336,99 @@ static void send_execute (void *cls,
                   if ( (msg->data.result != CURLE_OK) &&
                        (msg->data.result != CURLE_GOT_NOTHING) )
                   {
-
-
-                    GNUNET_log(GNUNET_ERROR_TYPE_INFO,
-                               _("Connection %X to peer `%s' (`%s') failed: `%s' `%s'\n"),
-                               con,
-                               GNUNET_i2s(&cs->identity),
-                               http_plugin_address_to_string(NULL, con->addr, con->addrlen),
-                               "curl_multi_perform",
-                               curl_easy_strerror (msg->data.result));
                     /* sending msg failed*/
-                    con->put_connected = GNUNET_NO;
-                    curl_easy_cleanup(con->put_curl_handle);
-                    con->put_curl_handle=NULL;
-                    if (( NULL != con->pending_msgs_tail) && ( NULL != con->pending_msgs_tail->transmit_cont))
-                      con->pending_msgs_tail->transmit_cont (con->pending_msgs_tail->transmit_cont_cls,&con->session->identity,GNUNET_SYSERR);
-
+                    if (msg->easy_handle == ps->send_endpoint)
+                    {
+#if DEBUG_CONNECTIONS
+                      GNUNET_log(GNUNET_ERROR_TYPE_INFO,
+                                 _("Connection %X: HTTP PUT to peer `%s' (`%s') failed: `%s' `%s'\n"),
+                                 ps,
+                                 GNUNET_i2s(&pc->identity),
+                                 http_plugin_address_to_string(NULL, ps->addr, ps->addrlen),
+                                 "curl_multi_perform",
+                                 curl_easy_strerror (msg->data.result));
+#endif
+                      ps->send_connected = GNUNET_NO;
+                      ps->send_active = GNUNET_NO;
+                      curl_multi_remove_handle(plugin->multi_handle,ps->send_endpoint);
+                      curl_easy_cleanup(ps->send_endpoint);
+                      ps->send_endpoint=NULL;
+                      cur_msg = ps->pending_msgs_tail;
+                      if (( NULL != cur_msg) && ( NULL != cur_msg->transmit_cont))
+                        cur_msg->transmit_cont (cur_msg->transmit_cont_cls,&pc->identity,GNUNET_SYSERR);
+                    }
+                    /* GET connection failed */
+                    if (msg->easy_handle == ps->recv_endpoint)
+                    {
+#if DEBUG_CONNECTIONS
+                      GNUNET_log(GNUNET_ERROR_TYPE_INFO,
+                           _("Connection %X: HTTP GET to peer `%s' (`%s') failed: `%s' `%s'\n"),
+                           ps,
+                           GNUNET_i2s(&pc->identity),
+                           http_plugin_address_to_string(NULL, ps->addr, ps->addrlen),
+                           "curl_multi_perform",
+                           curl_easy_strerror (msg->data.result));
+#endif
+                      ps->recv_connected = GNUNET_NO;
+                      ps->recv_active = GNUNET_NO;
+                      curl_multi_remove_handle(plugin->multi_handle,ps->recv_endpoint);
+                      curl_easy_cleanup(ps->recv_endpoint);
+                      ps->recv_endpoint=NULL;
+                    }
                   }
                   else
                   {
-                    GNUNET_assert (CURLE_OK == curl_easy_getinfo(msg->easy_handle, CURLINFO_RESPONSE_CODE, &http_result));
-                    GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
-                                "Send to peer `%s' completed with code %u\n", GNUNET_i2s(&cs->identity), http_result );
-
-                    curl_easy_cleanup(con->put_curl_handle);
-                    con->put_connected = GNUNET_NO;
-                    con->put_curl_handle=NULL;
-
-                    /* Calling transmit continuation  */
-                    if (( NULL != con->pending_msgs_tail) && (NULL != con->pending_msgs_tail->transmit_cont))
+                    if (msg->easy_handle == ps->send_endpoint)
                     {
-                      /* HTTP 1xx : Last message before here was informational */
-                      if ((http_result >=100) && (http_result < 200))
-                        con->pending_msgs_tail->transmit_cont (con->pending_msgs_tail->transmit_cont_cls,&cs->identity,GNUNET_OK);
-                      /* HTTP 2xx: successful operations */
-                      if ((http_result >=200) && (http_result < 300))
-                        con->pending_msgs_tail->transmit_cont (con->pending_msgs_tail->transmit_cont_cls,&cs->identity,GNUNET_OK);
-                      /* HTTP 3xx..5xx: error */
-                      if ((http_result >=300) && (http_result < 600))
-                        con->pending_msgs_tail->transmit_cont (con->pending_msgs_tail->transmit_cont_cls,&cs->identity,GNUNET_SYSERR);
+                      GNUNET_assert (CURLE_OK == curl_easy_getinfo(msg->easy_handle, CURLINFO_RESPONSE_CODE, &http_result));
+#if DEBUG_CONNECTIONS
+                      GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
+                                  "Connection %X: HTTP PUT connection to peer `%s' (`%s') was closed with HTTP code %u\n",
+                                   ps,
+                                   GNUNET_i2s(&pc->identity),
+                                   http_plugin_address_to_string(NULL, ps->addr, ps->addrlen),
+                                   http_result);
+#endif
+                      /* Calling transmit continuation  */
+                      cur_msg = ps->pending_msgs_tail;
+                      if (( NULL != cur_msg) && (NULL != cur_msg->transmit_cont))
+                      {
+                        /* HTTP 1xx : Last message before here was informational */
+                        if ((http_result >=100) && (http_result < 200))
+                          cur_msg->transmit_cont (cur_msg->transmit_cont_cls,&pc->identity,GNUNET_OK);
+                        /* HTTP 2xx: successful operations */
+                        if ((http_result >=200) && (http_result < 300))
+                          cur_msg->transmit_cont (cur_msg->transmit_cont_cls,&pc->identity,GNUNET_OK);
+                        /* HTTP 3xx..5xx: error */
+                        if ((http_result >=300) && (http_result < 600))
+                          cur_msg->transmit_cont (cur_msg->transmit_cont_cls,&pc->identity,GNUNET_SYSERR);
+                      }
+                      ps->send_connected = GNUNET_NO;
+                      ps->send_active = GNUNET_NO;
+                      curl_multi_remove_handle(plugin->multi_handle,ps->send_endpoint);
+                      curl_easy_cleanup(ps->send_endpoint);
+                      ps->send_endpoint =NULL;
+                    }
+                    if (msg->easy_handle == ps->recv_endpoint)
+                    {
+#if DEBUG_CONNECTIONS
+                      GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
+                                  "Connection %X: HTTP GET connection to peer `%s' (`%s') was closed with HTTP code %u\n",
+                                   ps,
+                                   GNUNET_i2s(&pc->identity),
+                                   http_plugin_address_to_string(NULL, ps->addr, ps->addrlen),
+                                   http_result);
+#endif
+                      ps->recv_connected = GNUNET_NO;
+                      ps->recv_active = GNUNET_NO;
+                      curl_multi_remove_handle(plugin->multi_handle,ps->recv_endpoint);
+                      curl_easy_cleanup(ps->recv_endpoint);
+                      ps->recv_endpoint=NULL;
                     }
                   }
-                  if (con->pending_msgs_tail != NULL)
-                  {
-                    if (con->pending_msgs_tail->pos>0)
-                      remove_http_message(con, con->pending_msgs_tail);
-                    GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Message could not be removed from session `%s'\n", GNUNET_i2s(&cs->identity));
-                  }
-                  return;
+                  if ((ps->recv_connected == GNUNET_NO) && (ps->send_connected == GNUNET_NO))
+                    remove_session (pc, ps, GNUNET_YES, GNUNET_SYSERR);
+                  break;
                 default:
                   break;
                 }
@@ -1235,16 +1439,16 @@ static void send_execute (void *cls,
       handles_last_run = running;
     }
   while (mret == CURLM_CALL_MULTI_PERFORM);
-  send_schedule(plugin, cls);
+  curl_schedule(plugin);
 }
 
 
 /**
  * Function setting up file descriptors and scheduling task to run
  * @param ses session to send data to
- * @return bytes sent to peer
+ * @return GNUNET_SYSERR for hard failure, GNUNET_OK for ok
  */
-static size_t send_schedule(void *cls, struct Session* ses )
+static int curl_schedule(void *cls )
 {
   struct Plugin *plugin = cls;
   fd_set rs;
@@ -1257,6 +1461,14 @@ static size_t send_schedule(void *cls, struct Session* ses )
   CURLMcode mret;
 
   GNUNET_assert(cls !=NULL);
+
+  /* Cancel previous scheduled task */
+  if (plugin->http_curl_task !=  GNUNET_SCHEDULER_NO_TASK)
+  {
+         GNUNET_SCHEDULER_cancel(plugin->env->sched, plugin->http_curl_task);
+         plugin->http_curl_task = GNUNET_SCHEDULER_NO_TASK;
+  }
+
   max = -1;
   FD_ZERO (&rs);
   FD_ZERO (&ws);
@@ -1268,7 +1480,7 @@ static size_t send_schedule(void *cls, struct Session* ses )
                   _("%s failed at %s:%d: `%s'\n"),
                   "curl_multi_fdset", __FILE__, __LINE__,
                   curl_multi_strerror (mret));
-      return -1;
+      return GNUNET_SYSERR;
     }
   mret = curl_multi_timeout (plugin->multi_handle, &to);
   if (mret != CURLM_OK)
@@ -1277,28 +1489,274 @@ static size_t send_schedule(void *cls, struct Session* ses )
                   _("%s failed at %s:%d: `%s'\n"),
                   "curl_multi_timeout", __FILE__, __LINE__,
                   curl_multi_strerror (mret));
-      return -1;
+      return GNUNET_SYSERR;
     }
 
   grs = GNUNET_NETWORK_fdset_create ();
   gws = GNUNET_NETWORK_fdset_create ();
   GNUNET_NETWORK_fdset_copy_native (grs, &rs, max + 1);
   GNUNET_NETWORK_fdset_copy_native (gws, &ws, max + 1);
-  plugin->http_server_task_send = GNUNET_SCHEDULER_add_select (plugin->env->sched,
+  plugin->http_curl_task = GNUNET_SCHEDULER_add_select (plugin->env->sched,
                                    GNUNET_SCHEDULER_PRIORITY_DEFAULT,
                                    GNUNET_SCHEDULER_NO_TASK,
                                    GNUNET_TIME_relative_multiply (GNUNET_TIME_UNIT_SECONDS, 0),
                                    grs,
                                    gws,
-                                   &send_execute,
+                                   &curl_perform,
                                    plugin);
   GNUNET_NETWORK_fdset_destroy (gws);
   GNUNET_NETWORK_fdset_destroy (grs);
+  return GNUNET_OK;
+}
+
+/**
+ * Function setting up curl handle and selecting message to send
+ * @param cls plugin
+ * @param ses session to send data to
+ * @param con connection
+ * @return GNUNET_SYSERR on failure, GNUNET_NO if connecting, GNUNET_YES if ok
+ */
+static ssize_t send_check_connections (void *cls, struct Session *ps)
+{
+  struct Plugin *plugin = cls;
+  CURLMcode mret;
+  struct HTTP_Message * msg;
+
+  struct GNUNET_TIME_Relative timeout = GNUNET_CONSTANTS_IDLE_CONNECTION_TIMEOUT;
+
+  GNUNET_assert(cls !=NULL);
+
+  if (ps->direction == OUTBOUND)
+  {
+    /* RECV DIRECTION */
+    /* Check if session is connected to receive data, otherwise connect to peer */
+    if (ps->recv_connected == GNUNET_NO)
+    {
+        if (ps->recv_endpoint == NULL)
+        {
+          ps->recv_endpoint = curl_easy_init();
+#if DEBUG_CURL
+        curl_easy_setopt(ps->recv_endpoint, CURLOPT_VERBOSE, 1L);
+#endif
+        curl_easy_setopt(ps->recv_endpoint, CURLOPT_URL, ps->url);
+        curl_easy_setopt(ps->recv_endpoint, CURLOPT_HEADERFUNCTION, &curl_get_header_cb);
+        curl_easy_setopt(ps->recv_endpoint, CURLOPT_WRITEHEADER, ps);
+        curl_easy_setopt(ps->recv_endpoint, CURLOPT_READFUNCTION, curl_send_cb);
+        curl_easy_setopt(ps->recv_endpoint, CURLOPT_READDATA, ps);
+        curl_easy_setopt(ps->recv_endpoint, CURLOPT_WRITEFUNCTION, curl_receive_cb);
+        curl_easy_setopt(ps->recv_endpoint, CURLOPT_WRITEDATA, ps);
+        curl_easy_setopt(ps->recv_endpoint, CURLOPT_TIMEOUT, (long) timeout.value);
+        curl_easy_setopt(ps->recv_endpoint, CURLOPT_PRIVATE, ps);
+        curl_easy_setopt(ps->recv_endpoint, CURLOPT_CONNECTTIMEOUT, HTTP_CONNECT_TIMEOUT);
+        curl_easy_setopt(ps->recv_endpoint, CURLOPT_BUFFERSIZE, GNUNET_SERVER_MAX_MESSAGE_SIZE);
+
+        mret = curl_multi_add_handle(plugin->multi_handle, ps->recv_endpoint);
+        if (mret != CURLM_OK)
+        {
+          GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
+                                         _("Connection: %X: %s failed at %s:%d: `%s'\n"),
+                                         ps,
+                      "curl_multi_add_handle", __FILE__, __LINE__,
+                      curl_multi_strerror (mret));
+          return GNUNET_SYSERR;
+        }
+        if (curl_schedule (plugin) == GNUNET_SYSERR)
+               return GNUNET_SYSERR;
+#if DEBUG_CONNECTIONS
+        GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,"Connection %X: inbound not connected, initiating connection\n",ps);
+#endif
+      }
+    }
+
+    /* waiting for receive direction */
+    if (ps->recv_connected==GNUNET_NO)
+      return GNUNET_NO;
+
+    /* SEND DIRECTION */
+    /* Check if session is connected to send data, otherwise connect to peer */
+    if ((ps->send_connected == GNUNET_YES) && (ps->send_endpoint!= NULL))
+    {
+      if (ps->send_active == GNUNET_YES)
+      {
+#if DEBUG_CONNECTIONS
+        GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,"Connection %X: outbound active, enqueueing message\n",ps);
+#endif
+        return GNUNET_YES;
+      }
+      if (ps->send_active == GNUNET_NO)
+      {
+#if DEBUG_CONNECTIONS
+        GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,"Connection %X: outbound paused, unpausing existing connection and enqueueing message\n",ps);
+#endif
+        if (CURLE_OK == curl_easy_pause(ps->send_endpoint,CURLPAUSE_CONT))
+        {
+                       ps->send_active=GNUNET_YES;
+                       return GNUNET_YES;
+        }
+        else
+               return GNUNET_SYSERR;
+      }
+    }
+    /* not connected, initiate connection */
+    if ((ps->send_connected==GNUNET_NO) && (NULL == ps->send_endpoint))
+    {
+       ps->send_endpoint = curl_easy_init();
+               GNUNET_assert (ps->send_endpoint != NULL);
+               GNUNET_assert (NULL != ps->pending_msgs_tail);
+#if DEBUG_CONNECTIONS
+               GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,"Connection %X: outbound not connected, initiating connection\n",ps);
+#endif
+               ps->send_active = GNUNET_NO;
+               msg = ps->pending_msgs_tail;
 
-  /* FIXME: return bytes REALLY sent */
-  return 0;
+#if DEBUG_CURL
+               curl_easy_setopt(ps->send_endpoint, CURLOPT_VERBOSE, 1L);
+#endif
+               curl_easy_setopt(ps->send_endpoint, CURLOPT_URL, ps->url);
+               curl_easy_setopt(ps->send_endpoint, CURLOPT_PUT, 1L);
+               curl_easy_setopt(ps->send_endpoint, CURLOPT_HEADERFUNCTION, &curl_put_header_cb);
+               curl_easy_setopt(ps->send_endpoint, CURLOPT_WRITEHEADER, ps);
+               curl_easy_setopt(ps->send_endpoint, CURLOPT_READFUNCTION, curl_send_cb);
+               curl_easy_setopt(ps->send_endpoint, CURLOPT_READDATA, ps);
+               curl_easy_setopt(ps->send_endpoint, CURLOPT_WRITEFUNCTION, curl_receive_cb);
+               curl_easy_setopt(ps->send_endpoint, CURLOPT_READDATA, ps);
+               curl_easy_setopt(ps->send_endpoint, CURLOPT_TIMEOUT, (long) timeout.value);
+               curl_easy_setopt(ps->send_endpoint, CURLOPT_PRIVATE, ps);
+               curl_easy_setopt(ps->send_endpoint, CURLOPT_CONNECTTIMEOUT, HTTP_CONNECT_TIMEOUT);
+               curl_easy_setopt(ps->send_endpoint, CURLOPT_BUFFERSIZE, GNUNET_SERVER_MAX_MESSAGE_SIZE);
+
+               mret = curl_multi_add_handle(plugin->multi_handle, ps->send_endpoint);
+               if (mret != CURLM_OK)
+               {
+                 GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
+                                         _("Connection: %X: %s failed at %s:%d: `%s'\n"),
+                                         ps,
+                                         "curl_multi_add_handle", __FILE__, __LINE__,
+                                         curl_multi_strerror (mret));
+                 return GNUNET_SYSERR;
+               }
+    }
+    if (curl_schedule (plugin) == GNUNET_SYSERR)
+       return GNUNET_SYSERR;
+    return GNUNET_YES;
+  }
+  if (ps->direction == INBOUND)
+  {
+    GNUNET_assert (NULL != ps->pending_msgs_tail);
+    if ((ps->recv_connected==GNUNET_YES) && (ps->send_connected==GNUNET_YES) &&
+       (ps->recv_force_disconnect==GNUNET_NO) && (ps->recv_force_disconnect==GNUNET_NO))
+       return GNUNET_YES;
+  }
+  return GNUNET_SYSERR;
 }
 
+static struct Session * send_select_session (void * cls, struct HTTP_PeerContext *pc, const void * addr, size_t addrlen, int force_address, struct Session * session)
+{
+       struct Session * tmp = NULL;
+       int addr_given = GNUNET_NO;
+
+       if ((addr!=NULL) && (addrlen>0))
+               addr_given = GNUNET_YES;
+
+       if (force_address == GNUNET_YES)
+       {
+               /* check session given as argument */
+               if ((session != NULL) && (addr_given == GNUNET_YES))
+               {
+                     if (0 == memcmp(session->addr, addr, addrlen))
+                     {
+                       /* connection can not be used, since it is disconnected */
+                       if ((session->recv_force_disconnect==GNUNET_NO) && (session->send_force_disconnect==GNUNET_NO))
+                       {
+#if DEBUG_SESSION_SELECTION
+                                 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,"Session %X selected: Using session passed by transport to send to forced address \n", session);
+#endif
+                               return session;
+                       }
+                     }
+               }
+               /* check last session used */
+               if ((pc->last_session != NULL)&& (addr_given == GNUNET_YES))
+               {
+                     if (0 == memcmp(pc->last_session->addr, addr, addrlen))
+                     {
+                       /* connection can not be used, since it is disconnected */
+                       if ((pc->last_session->recv_force_disconnect==GNUNET_NO) && (pc->last_session->send_force_disconnect==GNUNET_NO))
+                       {
+#if DEBUG_SESSION_SELECTION
+                                 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,"Session %X selected: Using last session used to send to forced address \n", pc->last_session);
+#endif
+                               return pc->last_session;
+                       }
+                     }
+               }
+               /* find session in existing sessions */
+               tmp = pc->head;
+               while ((tmp!=NULL) && (addr_given == GNUNET_YES))
+               {
+
+                         if (0 == memcmp(tmp->addr, addr, addrlen))
+                     {
+                       /* connection can not be used, since it is disconnected */
+                       if ((tmp->recv_force_disconnect==GNUNET_NO) && (tmp->send_force_disconnect==GNUNET_NO))
+                       {
+#if DEBUG_SESSION_SELECTION
+                                 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,"Session %X selected: Using existing session to send to forced address \n", session);
+#endif
+                                 return session;
+                       }
+
+                     }
+                         tmp=tmp->next;
+               }
+               /* no session to use */
+               return NULL;
+       }
+       if ((force_address == GNUNET_NO) || (force_address == GNUNET_SYSERR))
+       {
+               /* check session given as argument */
+               if (session != NULL)
+               {
+                       /* connection can not be used, since it is disconnected */
+                       if ((session->recv_force_disconnect==GNUNET_NO) && (session->send_force_disconnect==GNUNET_NO))
+                       {
+#if DEBUG_SESSION_SELECTION
+                                 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,"Session %X selected: Using session passed by transport to send not-forced address \n", session);
+#endif
+                                 return session;
+                       }
+
+               }
+               /* check last session used */
+               if (pc->last_session != NULL)
+               {
+                       /* connection can not be used, since it is disconnected */
+                       if ((pc->last_session->recv_force_disconnect==GNUNET_NO) && (pc->last_session->send_force_disconnect==GNUNET_NO))
+                       {
+#if DEBUG_SESSION_SELECTION
+                                 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,"Session %X selected: Using last session to send to not-forced address \n", pc->last_session);
+#endif
+                               return pc->last_session;
+                       }
+               }
+               /* find session in existing sessions */
+               tmp = pc->head;
+               while (tmp!=NULL)
+               {
+                       /* connection can not be used, since it is disconnected */
+                       if ((tmp->recv_force_disconnect==GNUNET_NO) && (tmp->send_force_disconnect==GNUNET_NO))
+                       {
+#if DEBUG_SESSION_SELECTION
+                                 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,"Session %X selected: Using existing session to send to not-forced address \n", tmp);
+#endif
+                               return tmp;
+                       }
+                       tmp=tmp->next;
+               }
+               return NULL;
+       }
+       return NULL;
+}
 
 /**
  * Function that can be used by the transport service to transmit
@@ -1351,34 +1809,92 @@ http_plugin_send (void *cls,
                   void *cont_cls)
 {
   struct Plugin *plugin = cls;
-  struct Session *cs;
   struct HTTP_Message *msg;
-  struct HTTP_Connection_out *con;
-  //unsigned int ret;
+  struct HTTP_PeerContext * pc;
+  struct Session * ps = NULL;
 
   GNUNET_assert(cls !=NULL);
-  GNUNET_assert ((addr!=NULL) && (addrlen != 0));
-
-  /* get session from hashmap */
-  cs = session_get(plugin, target);
-  con = session_check_outbound_address(plugin, cs, addr, addrlen);
-
-  char * force = GNUNET_malloc(30);
 
+#if DEBUG_HTTP
+  char * force = GNUNET_malloc(40);
   if (force_address == GNUNET_YES)
     strcpy(force,"forced addr.");
   if (force_address == GNUNET_NO)
     strcpy(force,"any addr.");
   if (force_address == GNUNET_SYSERR)
     strcpy(force,"reliable bi-direc. address addr.");
-  GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,"Transport tells me to send %u bytes to `%s' %s (%s), session: %X\n",
+
+  GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,"Transport tells me to send %u bytes to `%s' using %s (%s) and session: %X\n",
                                       msgbuf_size,
-                                      GNUNET_i2s(&cs->identity),
+                                      GNUNET_i2s(target),
                                       force,
                                       http_plugin_address_to_string(NULL, addr, addrlen),
                                       session);
 
-  //GNUNET_free(force);
+  GNUNET_free(force);
+#endif
+
+  pc = GNUNET_CONTAINER_multihashmap_get (plugin->peers, &target->hashPubKey);
+  /* Peer unknown */
+  if (pc==NULL)
+  {
+    pc = GNUNET_malloc(sizeof (struct HTTP_PeerContext));
+    pc->plugin = plugin;
+    pc->session_id_counter=1;
+    pc->last_session = NULL;
+    memcpy(&pc->identity, target, sizeof(struct GNUNET_PeerIdentity));
+    GNUNET_CONTAINER_multihashmap_put(plugin->peers, &pc->identity.hashPubKey, pc, GNUNET_CONTAINER_MULTIHASHMAPOPTION_UNIQUE_ONLY);
+  }
+
+  ps = send_select_session (plugin, pc, addr, addrlen, force_address, session);
+
+  /* session not existing, but address forced -> creating new session */
+  if (ps==NULL)
+  {
+    if ((addr!=NULL) && (addrlen!=0))
+    {
+      ps = GNUNET_malloc(sizeof (struct Session));
+#if DEBUG_SESSION_SELECTION
+      if (force_address == GNUNET_YES)
+        GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,"No existing connection & forced address: creating new session %X to peer %s\n", ps, GNUNET_i2s(target));
+      if (force_address != GNUNET_YES)
+        GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,"No existing connection: creating new session %X to peer %s\n", ps, GNUNET_i2s(target));
+#endif
+      if ((addrlen!=0) && (addr!=NULL))
+      {
+      ps->addr = GNUNET_malloc(addrlen);
+      memcpy(ps->addr,addr,addrlen);
+      ps->addrlen = addrlen;
+      }
+      else
+      {
+        ps->addr = NULL;
+        ps->addrlen = 0;
+      }
+      ps->direction=OUTBOUND;
+      ps->recv_connected = GNUNET_NO;
+      ps->recv_force_disconnect = GNUNET_NO;
+      ps->send_connected = GNUNET_NO;
+      ps->send_force_disconnect = GNUNET_NO;
+      ps->pending_msgs_head = NULL;
+      ps->pending_msgs_tail = NULL;
+      ps->peercontext=pc;
+      ps->session_id = pc->session_id_counter;
+      pc->session_id_counter++;
+      ps->url = create_url (plugin, ps->addr, ps->addrlen, ps->session_id);
+      if (ps->msgtok == NULL)
+        ps->msgtok = GNUNET_SERVER_mst_create (&curl_receive_mst_cb, ps);
+      GNUNET_CONTAINER_DLL_insert(pc->head,pc->tail,ps);
+    }
+    else
+    {
+#if DEBUG_HTTP
+      GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,"No existing session found & and no address given: no way to send this message to peer `%s'!\n", GNUNET_i2s(target));
+#endif
+      return GNUNET_SYSERR;
+    }
+  }
+
   /* create msg */
   msg = GNUNET_malloc (sizeof (struct HTTP_Message) + msgbuf_size);
   msg->next = NULL;
@@ -1388,20 +1904,19 @@ http_plugin_send (void *cls,
   msg->transmit_cont = cont;
   msg->transmit_cont_cls = cont_cls;
   memcpy (msg->buf,msgbuf, msgbuf_size);
+  GNUNET_CONTAINER_DLL_insert(ps->pending_msgs_head,ps->pending_msgs_tail,msg);
 
-  /* must use this address */
-  if (force_address == GNUNET_YES)
+  if (send_check_connections (plugin, ps) != GNUNET_SYSERR)
   {
-    /* enqueue in connection message queue */
-    GNUNET_CONTAINER_DLL_insert(con->pending_msgs_head,con->pending_msgs_tail,msg);
+         if (force_address != GNUNET_YES)
+                 pc->last_session = ps;
+
+         if (pc->last_session==NULL)
+                 pc->last_session = ps;
+         return msg->size;
   }
-  /* can use existing connection to send */
   else
-  {
-    /* enqueue in connection message queue */
-    GNUNET_CONTAINER_DLL_insert(con->pending_msgs_head,con->pending_msgs_tail,msg);
-  }
-  return send_initiate (plugin, cs, con);
+         return GNUNET_SYSERR;
 }
 
 
@@ -1418,25 +1933,53 @@ static void
 http_plugin_disconnect (void *cls,
                             const struct GNUNET_PeerIdentity *target)
 {
+
+
   struct Plugin *plugin = cls;
-  struct HTTP_Connection_out *con;
-  struct Session *cs;
+  struct HTTP_PeerContext *pc = NULL;
+  struct Session *ps = NULL;
+  //struct Session *tmp = NULL;
 
-  /* get session from hashmap */
-  cs = session_get(plugin, target);
-  con = cs->outbound_connections_head;
+  pc = GNUNET_CONTAINER_multihashmap_get (plugin->peers, &target->hashPubKey);
+  if (pc==NULL)
+    return;
+  ps = pc->head;
 
-  while (con!=NULL)
+  while (ps!=NULL)
   {
-    if (con->put_curl_handle!=NULL)
-      curl_easy_cleanup(con->put_curl_handle);
-    con->put_curl_handle=NULL;
-    con->put_connected = GNUNET_NO;
-    while (con->pending_msgs_head!=NULL)
+    /* Telling transport that session is getting disconnected */
+    plugin->env->session_end(plugin, target, ps);
+    if (ps->direction==OUTBOUND)
+    {
+      if (ps->send_endpoint!=NULL)
+      {
+        //GNUNET_assert(CURLM_OK == curl_multi_remove_handle(plugin->multi_handle,ps->send_endpoint));
+        //curl_easy_cleanup(ps->send_endpoint);
+        //ps->send_endpoint=NULL;
+        ps->send_force_disconnect = GNUNET_YES;
+      }
+      if (ps->recv_endpoint!=NULL)
+      {
+       //GNUNET_assert(CURLM_OK == curl_multi_remove_handle(plugin->multi_handle,ps->recv_endpoint));
+       //curl_easy_cleanup(ps->recv_endpoint);
+       //ps->recv_endpoint=NULL;
+       ps->recv_force_disconnect = GNUNET_YES;
+      }
+    }
+
+    if (ps->direction==INBOUND)
     {
-      remove_http_message(con, con->pending_msgs_head);
+      ps->recv_force_disconnect = GNUNET_YES;
+      ps->send_force_disconnect = GNUNET_YES;
     }
-    con=con->next;
+
+    while (ps->pending_msgs_head!=NULL)
+    {
+      remove_http_message(ps, ps->pending_msgs_head);
+    }
+    ps->recv_active = GNUNET_NO;
+    ps->send_active = GNUNET_NO;
+    ps=ps->next;
   }
 }
 
@@ -1501,8 +2044,8 @@ http_plugin_address_pretty_printer (void *cls,
   res = GNUNET_asprintf(&ret,"http://%s:%u/",address,port);
   GNUNET_free (address);
   GNUNET_assert(res != 0);
-
   asc (asc_cls, ret);
+  GNUNET_free_non_null (ret);
 }
 
 
@@ -1537,17 +2080,18 @@ http_plugin_address_suggested (void *cls,
   if (addrlen == sizeof (struct IPv4HttpAddress))
     {
       v4 = (struct IPv4HttpAddress *) addr;
+      /* Not skipping loopback
       if (INADDR_LOOPBACK == ntohl(v4->ipv4_addr))
       {
         return GNUNET_SYSERR;
-      }
+      } */
       port = ntohs (v4->u_port);
       if (port != plugin->port_inbound)
       {
         return GNUNET_SYSERR;
       }
     }
-  else
+  if (addrlen == sizeof (struct IPv6HttpAddress))
     {
       v6 = (struct IPv6HttpAddress *) addr;
       if (IN6_IS_ADDR_LINKLOCAL (&v6->ipv6_addr))
@@ -1560,6 +2104,7 @@ http_plugin_address_suggested (void *cls,
         return GNUNET_SYSERR;
       }
     }
+
   return GNUNET_OK;
 }
 
@@ -1616,97 +2161,6 @@ http_plugin_address_to_string (void *cls,
   return ret;
 }
 
-/**
- * Add the IP of our network interface to the list of
- * our external IP addresses.
- *
- * @param cls the 'struct Plugin*'
- * @param name name of the interface
- * @param isDefault do we think this may be our default interface
- * @param addr address of the interface
- * @param addrlen number of bytes in addr
- * @return GNUNET_OK to continue iterating
- */
-static int
-process_interfaces (void *cls,
-                    const char *name,
-                    int isDefault,
-                    const struct sockaddr *addr, socklen_t addrlen)
-{
-  struct Plugin *plugin = cls;
-  struct IPv4HttpAddress * t4;
-  struct IPv6HttpAddress * t6;
-  int af;
-
-  GNUNET_assert(cls !=NULL);
-  af = addr->sa_family;
-  if (af == AF_INET)
-    {
-      t4 = GNUNET_malloc(sizeof(struct IPv4HttpAddress));
-      if (INADDR_LOOPBACK == ntohl(((struct sockaddr_in *) addr)->sin_addr.s_addr))
-      {
-        /* skip loopback addresses */
-        return GNUNET_OK;
-      }
-      t4->ipv4_addr = ((struct sockaddr_in *) addr)->sin_addr.s_addr;
-      t4->u_port = htons (plugin->port_inbound);
-      plugin->env->notify_address(plugin->env->cls,"http",t4, sizeof (struct IPv4HttpAddress), GNUNET_TIME_UNIT_FOREVER_REL);
-
-    }
-  else if (af == AF_INET6)
-    {
-      t6 = GNUNET_malloc(sizeof(struct IPv6HttpAddress));
-      if (IN6_IS_ADDR_LINKLOCAL (&((struct sockaddr_in6 *) addr)->sin6_addr))
-        {
-          /* skip link local addresses */
-          return GNUNET_OK;
-        }
-      if (IN6_IS_ADDR_LOOPBACK (&((struct sockaddr_in6 *) addr)->sin6_addr))
-        {
-          /* skip loopback addresses */
-          return GNUNET_OK;
-        }
-      memcpy (&t6->ipv6_addr,
-              &((struct sockaddr_in6 *) addr)->sin6_addr,
-              sizeof (struct in6_addr));
-      t6->u6_port = htons (plugin->port_inbound);
-      plugin->env->notify_address(plugin->env->cls,"http",t6,sizeof (struct IPv6HttpAddress) , GNUNET_TIME_UNIT_FOREVER_REL);
-    }
-  return GNUNET_OK;
-}
-int hashMapFreeIterator (void *cls, const GNUNET_HashCode *key, void *value)
-{
-  struct Session * cs = value;
-  struct HTTP_Connection_out * con = cs->outbound_connections_head;
-  struct HTTP_Connection_out * tmp_con = cs->outbound_connections_head;
-  struct HTTP_Message * msg = NULL;
-  struct HTTP_Message * tmp_msg = NULL;
-
-  GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,"Freeing session for peer `%s'\n",GNUNET_i2s(&cs->identity));
-
-  /* freeing connections */
-  while (con!=NULL)
-  {
-    GNUNET_free(con->url);
-    if (con->put_curl_handle!=NULL)
-      curl_easy_cleanup(con->put_curl_handle);
-    con->put_curl_handle = NULL;
-    msg = con->pending_msgs_head;
-    while (msg!=NULL)
-    {
-      tmp_msg=msg->next;
-      GNUNET_free(msg);
-      msg = tmp_msg;
-    }
-    tmp_con=con->next;
-    GNUNET_free(con);
-    con=tmp_con;
-  }
-  GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,"All sessions freed \n");
-
-  GNUNET_free (cs);
-  return GNUNET_YES;
-}
 
 /**
  * Exit point from the plugin.
@@ -1717,9 +2171,18 @@ libgnunet_plugin_transport_http_done (void *cls)
   struct GNUNET_TRANSPORT_PluginFunctions *api = cls;
   struct Plugin *plugin = api->cls;
   CURLMcode mret;
-
   GNUNET_assert(cls !=NULL);
 
+  if (plugin->http_server_daemon_v4 != NULL)
+  {
+    MHD_stop_daemon (plugin->http_server_daemon_v4);
+    plugin->http_server_daemon_v4 = NULL;
+  }
+  if (plugin->http_server_daemon_v6 != NULL)
+  {
+    MHD_stop_daemon (plugin->http_server_daemon_v6);
+    plugin->http_server_daemon_v6 = NULL;
+  }
 
   if ( plugin->http_server_task_v4 != GNUNET_SCHEDULER_NO_TASK)
   {
@@ -1733,37 +2196,40 @@ libgnunet_plugin_transport_http_done (void *cls)
     plugin->http_server_task_v6 = GNUNET_SCHEDULER_NO_TASK;
   }
 
-  if ( plugin->http_server_task_send != GNUNET_SCHEDULER_NO_TASK)
-  {
-    GNUNET_SCHEDULER_cancel(plugin->env->sched, plugin->http_server_task_send);
-    plugin->http_server_task_send = GNUNET_SCHEDULER_NO_TASK;
-  }
 
-  if (plugin->http_server_daemon_v4 != NULL)
+  /* free all peer information */
+  if (plugin->peers!=NULL)
   {
-    MHD_stop_daemon (plugin->http_server_daemon_v4);
-    plugin->http_server_daemon_v4 = NULL;
+         GNUNET_CONTAINER_multihashmap_iterate (plugin->peers,
+                                                                                        &remove_peer_context_Iterator,
+                                                                                        plugin);
+         GNUNET_CONTAINER_multihashmap_destroy (plugin->peers);
   }
-  if (plugin->http_server_daemon_v6 != NULL)
+  if (plugin->multi_handle!=NULL)
   {
-    MHD_stop_daemon (plugin->http_server_daemon_v6);
-    plugin->http_server_daemon_v6 = NULL;
+         mret = curl_multi_cleanup(plugin->multi_handle);
+#if DEBUG_HTTP
+         if ( CURLM_OK != mret)
+               GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,"curl multihandle clean up failed\n");
+#endif
+         plugin->multi_handle = NULL;
   }
+  curl_global_cleanup();
 
-  /* free all sessions */
-  GNUNET_CONTAINER_multihashmap_iterate (plugin->sessions,
-                                         &hashMapFreeIterator,
-                                         NULL);
-
-  GNUNET_CONTAINER_multihashmap_destroy (plugin->sessions);
-
-  mret = curl_multi_cleanup(plugin->multi_handle);
-  if ( CURLM_OK != mret)
-    GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,"curl multihandle clean up failed");
+  if ( plugin->http_curl_task != GNUNET_SCHEDULER_NO_TASK)
+  {
+    GNUNET_SCHEDULER_cancel(plugin->env->sched, plugin->http_curl_task);
+    plugin->http_curl_task = GNUNET_SCHEDULER_NO_TASK;
+  }
 
+  GNUNET_free_non_null (plugin->bind4_address);
+  GNUNET_free_non_null (plugin->bind6_address);
+  GNUNET_free_non_null(plugin->bind_hostname);
   GNUNET_free (plugin);
   GNUNET_free (api);
+#if DEBUG_HTTP
   GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,"Unload http plugin complete...\n");
+#endif
   return NULL;
 }
 
@@ -1781,11 +2247,17 @@ libgnunet_plugin_transport_http_init (void *cls)
   long long unsigned int port;
 
   GNUNET_assert(cls !=NULL);
+#if DEBUG_HTTP
   GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,"Starting http plugin...\n");
+#endif
 
   plugin = GNUNET_malloc (sizeof (struct Plugin));
+  plugin->stats = env->stats;
   plugin->env = env;
-  plugin->sessions = NULL;
+  plugin->peers = NULL;
+  plugin->bind4_address = NULL;
+  plugin->use_ipv6  = GNUNET_YES;
+  plugin->use_ipv4  = GNUNET_YES;
 
   api = GNUNET_malloc (sizeof (struct GNUNET_TRANSPORT_PluginFunctions));
   api->cls = plugin;
@@ -1798,6 +2270,22 @@ libgnunet_plugin_transport_http_init (void *cls)
   /* Hashing our identity to use it in URLs */
   GNUNET_CRYPTO_hash_to_enc ( &(plugin->env->my_identity->hashPubKey), &plugin->my_ascii_hash_ident);
 
+  /* Reading port number from config file */
+  if (GNUNET_CONFIGURATION_have_value (env->cfg,
+                                                                  "transport-http", "USE_IPv6"))
+    {
+         plugin->use_ipv6 = GNUNET_CONFIGURATION_get_value_yesno (env->cfg,
+                                                                                                          "transport-http",
+                                                                                                          "USE_IPv6");
+    }
+  /* Reading port number from config file */
+  if (GNUNET_CONFIGURATION_have_value (env->cfg,
+                                                                  "transport-http", "USE_IPv4"))
+    {
+         plugin->use_ipv4 = GNUNET_CONFIGURATION_get_value_yesno (env->cfg,
+                                                                                                          "transport-http",
+                                                                                                          "USE_IPv4");
+    }
   /* Reading port number from config file */
   if ((GNUNET_OK !=
        GNUNET_CONFIGURATION_get_value_number (env->cfg,
@@ -1808,50 +2296,135 @@ libgnunet_plugin_transport_http_init (void *cls)
     {
       GNUNET_log_from (GNUNET_ERROR_TYPE_ERROR,
                        "http",
-                       _
-                       ("Require valid port number for transport plugin `%s' in configuration!\n"),
+                       _("Require valid port number for transport plugin `%s' in configuration!\n"),
                        "transport-http");
       libgnunet_plugin_transport_http_done (api);
       return NULL;
     }
+
+  /* Reading ipv4 addresse to bind to from config file */
+  if ((plugin->use_ipv4==GNUNET_YES) && (GNUNET_CONFIGURATION_have_value (env->cfg,
+                                                                  "transport-http", "BINDTO4")))
+  {
+         GNUNET_break (GNUNET_OK ==
+                                       GNUNET_CONFIGURATION_get_value_string (env->cfg,
+                                                                                                                  "transport-http",
+                                                                                                                  "BINDTO4",
+                                                                                                                  &plugin->bind_hostname));
+         plugin->bind4_address = GNUNET_malloc(sizeof(struct sockaddr_in));
+         plugin->bind4_address->sin_family = AF_INET;
+         plugin->bind4_address->sin_port = htons (port);
+
+         if (inet_pton(AF_INET,plugin->bind_hostname, &plugin->bind4_address->sin_addr)<=0)
+         {
+                 GNUNET_log_from (GNUNET_ERROR_TYPE_ERROR,
+                                                  "http",
+                                                  _("Misconfigured address to bind to in configuration!\n"),
+                                                  "transport-http");
+                 GNUNET_free(plugin->bind4_address);
+                 GNUNET_free(plugin->bind_hostname);
+                 plugin->bind_hostname = NULL;
+                 plugin->bind4_address = NULL;
+         }
+  }
+
+  /* Reading ipv4 addresse to bind to from config file */
+  if ((plugin->use_ipv6==GNUNET_YES) && (GNUNET_CONFIGURATION_have_value (env->cfg,
+                                                                  "transport-http", "BINDTO6")))
+  {
+         GNUNET_break (GNUNET_OK ==
+                                       GNUNET_CONFIGURATION_get_value_string (env->cfg,
+                                                                                                                  "transport-http",
+                                                                                                                  "BINDTO6",
+                                                                                                                  &plugin->bind_hostname));
+
+         plugin->bind6_address = GNUNET_malloc(sizeof(struct sockaddr_in6));
+         plugin->bind6_address->sin6_family = AF_INET6;
+         plugin->bind6_address->sin6_port = htons (port);
+
+      if (inet_pton(AF_INET6,plugin->bind_hostname, &plugin->bind6_address->sin6_addr)<=0)
+         {
+                 GNUNET_log_from (GNUNET_ERROR_TYPE_ERROR,
+                                                  "http",
+                                                  _("Misconfigured address to bind to in configuration!\n"),
+                                                  "transport-http");
+                 GNUNET_free(plugin->bind6_address);
+                 GNUNET_free(plugin->bind_hostname);
+                 plugin->bind_hostname = NULL;
+                 plugin->bind6_address = NULL;
+         }
+  }
+
   GNUNET_assert ((port > 0) && (port <= 65535));
   plugin->port_inbound = port;
   gn_timeout = GNUNET_CONSTANTS_IDLE_CONNECTION_TIMEOUT;
-  if ((plugin->http_server_daemon_v4 == NULL) && (plugin->http_server_daemon_v6 == NULL) && (port != 0))
-    {
-    plugin->http_server_daemon_v6 = MHD_start_daemon (MHD_USE_IPv6,
+  unsigned int timeout = (gn_timeout.value) / 1000;
+  if ((plugin->http_server_daemon_v6 == NULL) && (plugin->use_ipv6 == GNUNET_YES) && (port != 0))
+  {
+       struct sockaddr * tmp = (struct sockaddr *) plugin->bind6_address;
+    plugin->http_server_daemon_v6 = MHD_start_daemon (
+#if DEBUG_CONNECTIONS
+                                                                  MHD_USE_DEBUG |
+#endif
+                                                                  MHD_USE_IPv6,
                                        port,
-                                       &acceptPolicyCallback,
-                                       plugin , &accessHandlerCallback, plugin,
-                                       MHD_OPTION_CONNECTION_LIMIT, (unsigned int) 16,
-                                       MHD_OPTION_PER_IP_CONNECTION_LIMIT, (unsigned int) 1,
-                                       MHD_OPTION_CONNECTION_TIMEOUT, (gn_timeout.value / 1000),
+                                       &mhd_accept_cb,
+                                       plugin , &mdh_access_cb, plugin,
+                                       MHD_OPTION_SOCK_ADDR, tmp,
+                                       MHD_OPTION_CONNECTION_LIMIT, (unsigned int) 32,
+                                       MHD_OPTION_PER_IP_CONNECTION_LIMIT, (unsigned int) 6,
+                                       MHD_OPTION_CONNECTION_TIMEOUT, (unsigned int) timeout,
                                        MHD_OPTION_CONNECTION_MEMORY_LIMIT, (size_t) (16 * 1024),
-                                       MHD_OPTION_NOTIFY_COMPLETED, &requestCompletedCallback, NULL,
+                                       MHD_OPTION_NOTIFY_COMPLETED, &mhd_termination_cb, NULL,
                                        MHD_OPTION_END);
-    plugin->http_server_daemon_v4 = MHD_start_daemon (MHD_NO_FLAG,
+  }
+  if ((plugin->http_server_daemon_v4 == NULL) && (plugin->use_ipv4 == GNUNET_YES) && (port != 0))
+  {
+  plugin->http_server_daemon_v4 = MHD_start_daemon (
+#if DEBUG_CONNECTIONS
+                                                                  MHD_USE_DEBUG |
+#endif
+                                                                  MHD_NO_FLAG,
                                        port,
-                                       &acceptPolicyCallback,
-                                       plugin , &accessHandlerCallback, plugin,
-                                       MHD_OPTION_CONNECTION_LIMIT, (unsigned int) 16,
-                                       MHD_OPTION_PER_IP_CONNECTION_LIMIT, (unsigned int) 1,
-                                       MHD_OPTION_CONNECTION_TIMEOUT, (gn_timeout.value / 1000),
+                                       &mhd_accept_cb,
+                                       plugin , &mdh_access_cb, plugin,
+                                       MHD_OPTION_SOCK_ADDR, (struct sockaddr_in *)plugin->bind4_address,
+                                       MHD_OPTION_CONNECTION_LIMIT, (unsigned int) 32,
+                                       MHD_OPTION_PER_IP_CONNECTION_LIMIT, (unsigned int) 6,
+                                       MHD_OPTION_CONNECTION_TIMEOUT, (unsigned int) timeout,
                                        MHD_OPTION_CONNECTION_MEMORY_LIMIT, (size_t) (16 * 1024),
-                                       MHD_OPTION_NOTIFY_COMPLETED, &requestCompletedCallback, NULL,
+                                       MHD_OPTION_NOTIFY_COMPLETED, &mhd_termination_cb, NULL,
                                        MHD_OPTION_END);
-    }
+  }
   if (plugin->http_server_daemon_v4 != NULL)
     plugin->http_server_task_v4 = http_server_daemon_prepare (plugin, plugin->http_server_daemon_v4);
   if (plugin->http_server_daemon_v6 != NULL)
     plugin->http_server_task_v6 = http_server_daemon_prepare (plugin, plugin->http_server_daemon_v6);
 
+
   if (plugin->http_server_task_v4 != GNUNET_SCHEDULER_NO_TASK)
-    GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,"Starting MHD with IPv4 on port %u\n",port);
-  else if (plugin->http_server_task_v6 != GNUNET_SCHEDULER_NO_TASK)
-    GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,"Starting MHD with IPv4 and IPv6 on port %u\n",port);
+  {
+#if DEBUG_HTTP
+         GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,"Starting MHD with IPv4 bound to %s with port %u\n",(plugin->bind_hostname!=NULL) ? plugin->bind_hostname : "every address",port);
+#endif
+  }
+  else if ((plugin->http_server_task_v6 != GNUNET_SCHEDULER_NO_TASK) && (plugin->http_server_task_v4 != GNUNET_SCHEDULER_NO_TASK))
+  {
+#if DEBUG_HTTP
+    GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,"Starting MHD with IPv6 bound to %s with port %u\n",(plugin->bind_hostname!=NULL) ? plugin->bind_hostname : "every address", port);
+#endif
+  }
+  else if ((plugin->http_server_task_v6 != GNUNET_SCHEDULER_NO_TASK) && (plugin->http_server_task_v4 == GNUNET_SCHEDULER_NO_TASK))
+  {
+#if DEBUG_HTTP
+    GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,"Starting MHD with IPv4 and IPv6 bound to %s with port %u\n",(plugin->bind_hostname!=NULL) ? plugin->bind_hostname : "every address", port);
+#endif
+  }
   else
   {
+#if DEBUG_HTTP
     GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,"No MHD was started, transport plugin not functional!\n");
+#endif
     libgnunet_plugin_transport_http_done (api);
     return NULL;
   }
@@ -1863,14 +2436,14 @@ libgnunet_plugin_transport_http_init (void *cls)
   if ( NULL == plugin->multi_handle )
   {
     GNUNET_log_from (GNUNET_ERROR_TYPE_ERROR,
-                     "http",
-                     _("Could not initialize curl multi handle, failed to start http plugin!\n"),
-                     "transport-http");
+                                  "http",
+                                  _("Could not initialize curl multi handle, failed to start http plugin!\n"),
+                                  "transport-http");
     libgnunet_plugin_transport_http_done (api);
     return NULL;
   }
 
-  plugin->sessions = GNUNET_CONTAINER_multihashmap_create (10);
+  plugin->peers = GNUNET_CONTAINER_multihashmap_create (10);
   GNUNET_OS_network_interfaces_list (&process_interfaces, plugin);
 
   return api;