X-Git-Url: https://git.librecmc.org/?a=blobdiff_plain;f=src%2Ftransport%2Fplugin_transport_http.c;h=f71acf4b0cbb0c703748bc67a60a900962747a9c;hb=aaf312180fd09f08e30316a0a646a662efb29219;hp=5f558e7f4a4bccec5a07cae117622828203ef063;hpb=7f4dddcdc1004b8699c55fc23f15249a6f9e40b2;p=oweals%2Fgnunet.git

diff --git a/src/transport/plugin_transport_http.c b/src/transport/plugin_transport_http.c
index 5f558e7f4..f71acf4b0 100644
--- a/src/transport/plugin_transport_http.c
+++ b/src/transport/plugin_transport_http.c
@@ -4,7 +4,7 @@
 
      GNUnet is free software; you can redistribute it and/or modify
      it under the terms of the GNU General Public License as published
-     by the Free Software Foundation; either version 2, or (at your
+     by the Free Software Foundation; either version 3, or (at your
      option) any later version.
 
      GNUnet is distributed in the hope that it will be useful, but
@@ -28,7 +28,6 @@
 #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"
@@ -41,8 +40,12 @@
 #include <curl/curl.h>
 
 
-#define DEBUG_CURL GNUNET_YES
+#define DEBUG_CURL GNUNET_NO
 #define DEBUG_HTTP GNUNET_NO
+#define DEBUG_CONNECTIONS GNUNET_YES
+
+#define INBOUND GNUNET_NO
+#define OUTBOUND GNUNET_YES
 
 /**
  * Text of the response sent back after the last bytes of a PUT
@@ -76,12 +79,12 @@ struct IPv4HttpAddress
   /**
    * IPv4 address, in network byte order.
    */
-  uint32_t ipv4_addr;
+  uint32_t ipv4_addr GNUNET_PACKED;
 
   /**
    * Port number, in network byte order.
    */
-  uint16_t u_port;
+  uint16_t u_port GNUNET_PACKED;
 
 };
 
@@ -94,22 +97,15 @@ struct IPv6HttpAddress
   /**
    * IPv6 address.
    */
-  struct in6_addr ipv6_addr;
+  struct in6_addr ipv6_addr GNUNET_PACKED;
 
   /**
    * Port number, in network byte order.
    */
-  uint16_t u6_port;
+  uint16_t u6_port GNUNET_PACKED;
 
 };
 
-struct HTTP_inbound_transmission
-{
-  /**
-   * bytes received
-   */
-  size_t bytes_recv;
-};
 
 /**
  *  Message to send using http
@@ -140,8 +136,6 @@ struct HTTP_Message
    * buffer length
    */
   size_t size;
-  
-  char * dest_url;
 
   /**
    * Continuation function to call once the transmission buffer
@@ -157,129 +151,147 @@ struct HTTP_Message
 };
 
 
-struct HTTP_Connection
+struct HTTP_PeerContext
 {
-  struct HTTP_Connection * next;
-
-  struct HTTP_Connection * prev;
+  /**
+   * peer's identity
+   */
+  struct GNUNET_PeerIdentity identity;
 
-  void * addr;
-  size_t addrlen;
+  /**
+   * Pointer to the global plugin struct.
+   */
+  struct Plugin *plugin;
 
-  struct HTTP_Message * pending_msgs_head;
-  struct HTTP_Message * pending_msgs_tail;
+  /**
+   * Linked list of connections with this peer
+   * head
+   */
+  struct Session * head;
 
-  char * url;
-  unsigned int connected;
+  /**
+   * Linked list of connections with this peer
+   * tail
+   */
+  struct Session * tail;
 
   /**
-   * curl handle for this ransmission
+   * id for next session
    */
-  CURL *curl_handle;
+  size_t session_id_counter;
 };
 
-/**
- * Session handle for connections.
- */
+
 struct Session
 {
-
   /**
-   * Stored in a linked list.
+   * API requirement.
    */
-  struct Session *next;
+  struct SessionHeader header;
 
   /**
-   * Pointer to the global plugin struct.
+   * next session in linked list
    */
-  struct Plugin *plugin;
+  struct Session * next;
 
   /**
-   * To whom are we talking to (set to our identity
-   * if we are still waiting for the welcome message)
+   * previous session in linked list
    */
-  struct GNUNET_PeerIdentity partner;
+  struct Session * prev;
 
   /**
-   * Sender's ip address to distinguish between incoming connections
+   * address of this session
    */
-  //struct sockaddr_in * addr_inbound;
+  void * addr;
 
   /**
-   * Sender's ip address to distinguish between incoming connections
+   * address length
    */
-  void * addr_in;
-
-  size_t addr_in_len;
+  size_t addrlen;
 
-  void * addr_out;
+  /**
+   * target url
+   */
+  char * url;
 
-  size_t addr_out_len;
+  /**
+   * Message queue for outbound messages
+   * head of queue
+   */
+  struct HTTP_Message * pending_msgs_head;
 
   /**
-   * Did we initiate the connection (GNUNET_YES) or the other peer (GNUNET_NO)?
+   * Message queue for outbound messages
+   * tail of queue
    */
-  int is_client;
+  struct HTTP_Message * pending_msgs_tail;
 
   /**
-   * At what time did we reset last_received last?
+   * partner peer this connection belongs to
    */
-  struct GNUNET_TIME_Absolute last_quota_update;
+  struct HTTP_PeerContext * peercontext;
 
   /**
-   * How many bytes have we received since the "last_quota_update"
-   * timestamp?
+   * message stream tokenizer for incoming data
    */
-  uint64_t last_received;
+  struct GNUNET_SERVER_MessageStreamTokenizer *msgtok;
 
   /**
-   * Number of bytes per ms that this peer is allowed
-   * to send to us.
+   * session direction
+   * outbound: OUTBOUND (GNUNET_YES)
+   * inbound : INBOUND (GNUNET_NO)
    */
-  uint32_t quota;
+  unsigned int direction;
 
   /**
-   * Is there a HTTP/PUT in progress?
+   * is session connected to send data?
    */
-  int is_put_in_progress;
+  unsigned int send_connected;
 
   /**
-   * Is the http request invalid?
+   * is send connection active?
    */
-  int is_bad_request;
+  unsigned int send_active;
 
   /**
-   * Encoded hash
+   * connection disconnect forced (e.g. from transport)
    */
-  struct GNUNET_CRYPTO_HashAsciiEncoded hash;
+  unsigned int send_force_disconnect;
 
   /**
-   * Head of dll used to store outbound messages
+   * is session connected to receive data?
    */
-  struct HTTP_Message * pending_outbound_msg_head;
+  unsigned int recv_connected;
 
   /**
-   * Tail of dll used to store outbound messages
+   * is receive connection active?
    */
-  struct HTTP_Message * pending_outbound_msg_tail;
+  unsigned int recv_active;
 
   /**
-   * Incoming message
+   * connection disconnect forced (e.g. from transport)
    */
-  struct HTTP_inbound_transmission pending_inbound_msg;
+  unsigned int recv_force_disconnect;
 
   /**
-   * curl handle for outbound transmissions
+   * id for next session
+   * NOTE: 0 is not an ID, zero is not defined. A correct ID is always > 0
    */
-  CURL *curl_handle;
+  size_t session_id;
 
   /**
-   * Message tokenizer for incoming data
+   * entity managing sending data
+   * outbound session: CURL *
+   * inbound session: mhd_connection *
    */
-  struct GNUNET_SERVER_MessageStreamTokenizer * msgtok;
+  void * send_endpoint;
 
-  struct HTTP_Connection *outbound_addresses_head;
-  struct HTTP_Connection *outbound_addresses_tail;
+  /**
+   * entity managing recieving data
+   * outbound session: CURL *
+   * inbound session: mhd_connection *
+   */
+  void * recv_endpoint;
 };
 
 /**
@@ -294,10 +306,7 @@ struct Plugin
 
   unsigned int port_inbound;
 
-  /**
-   * Hashmap for all existing sessions.
-   */
-  struct GNUNET_CONTAINER_MultiHashMap *sessions;
+  struct GNUNET_CONTAINER_MultiHashMap *peers;
 
   /**
    * Daemon for listening for new IPv4 connections.
@@ -336,83 +345,198 @@ struct Plugin
   struct GNUNET_CRYPTO_HashAsciiEncoded my_ascii_hash_ident;
 };
 
+
 /**
- * Create a new session
+ * Function called for a quick conversion of the binary address to
+ * a numeric address.  Note that the caller must not free the
+ * address and that the next call to this function is allowed
+ * to override the address again.
  *
- * @param addr_in address the peer is using inbound
- * @param addr_out address the peer is using outbound
- * @param peer identity
- * @return created session object
+ * @param cls closure
+ * @param addr binary address
+ * @param addrlen length of the address
+ * @return string representing the same address
  */
-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)
+static const char*
+http_plugin_address_to_string (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;
-  struct Session * cs = GNUNET_malloc ( sizeof( struct Session) );
+  char *url = NULL;
 
-  GNUNET_assert(cls !=NULL);
-  if (addrlen_in != 0)
+  GNUNET_assert ((addr!=NULL) && (addrlen != 0));
+  GNUNET_asprintf(&url,
+                  "http://%s/%s;%u",
+                  http_plugin_address_to_string(NULL, addr, addrlen),
+                  (char *) (&plugin->my_ascii_hash_ident),id);
+
+  return url;
+}
+
+/**
+ * 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 Session * ps, struct HTTP_Message * msg)
+{
+  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;
+  GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,"Connection %X: removing %s session with id %u\n", ps, (ps->direction == INBOUND) ? "inbound" : "outbound",ps->session_id);
+  GNUNET_free_non_null (ps->addr);
+  GNUNET_SERVER_mst_destroy (ps->msgtok);
+  GNUNET_free(ps->url);
+
+  msg = ps->pending_msgs_head;
+  while (msg!=NULL)
   {
-    cs->addr_in = GNUNET_malloc (addrlen_in);
-    cs->addr_in_len = addrlen_in;
-    memcpy(cs->addr_in,addr_in,addrlen_in);
+    if ((call_msg_cont == GNUNET_YES) && (msg->transmit_cont!=NULL))
+    {
+      msg->transmit_cont (msg->transmit_cont_cls,&pc->identity,call_msg_cont_result);
+    }
+    GNUNET_free(msg);
+    GNUNET_CONTAINER_DLL_remove(ps->pending_msgs_head,ps->pending_msgs_head,msg);
   }
 
-  if (addrlen_out != 0)
+  GNUNET_CONTAINER_DLL_remove(pc->head,pc->tail,ps);
+  GNUNET_free(ps);
+  ps = NULL;
+  return GNUNET_OK;
+}
+
+static struct Session * get_Session (void * cls, struct HTTP_PeerContext *pc, const void * addr, size_t addr_len)
+{
+  struct Session * cc = pc->head;
+  struct Session * con = NULL;
+  unsigned int count = 0;
+
+  GNUNET_assert((addr_len == sizeof (struct IPv4HttpAddress)) || (addr_len == sizeof (struct IPv6HttpAddress)));
+  while (cc!=NULL)
   {
-    cs->addr_out = GNUNET_malloc (addrlen_out);
-    cs->addr_out_len = addrlen_out;
-    memcpy(cs->addr_out,addr_out,addrlen_out);
+    if (addr_len == cc->addrlen)
+    {
+      if (0 == memcmp(cc->addr, addr, addr_len))
+      {
+        /* connection can not be used, since it is disconnected */
+        if ((cc->recv_force_disconnect==GNUNET_NO) && (cc->send_force_disconnect==GNUNET_NO))
+          con = cc;
+        break;
+      }
+    }
+    count++;
+    cc=cc->next;
   }
-  cs->plugin = plugin;
-  memcpy(&cs->partner, peer, sizeof (struct GNUNET_PeerIdentity));
-  GNUNET_CRYPTO_hash_to_enc(&cs->partner.hashPubKey,&(cs->hash));
-  cs->pending_inbound_msg.bytes_recv = 0;
-  cs->msgtok = NULL;
-  cs->outbound_addresses_head = NULL;
-  cs->outbound_addresses_tail = NULL;
-  return cs;
+  return con;
 }
 
+
 /**
  * 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 Session * cs;
-
-  cs = *httpSessionCache;
-  if (cs == NULL)
+  struct Session * ps = *httpSessionCache;
+  if (ps == NULL)
     return;
-    GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,"Connection from peer `%s' was terminated\n",GNUNET_i2s(&cs->partner));
-    /* session set to inactive */
-    cs->is_put_in_progress = GNUNET_NO;
-    cs->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 Session * cs = cls;
-  GNUNET_assert(cs != NULL);
+
+  struct Session *ps  = cls;
+  struct HTTP_PeerContext *pc = ps->peercontext;
+  GNUNET_assert(ps != NULL);
+  GNUNET_assert(pc != NULL);
 
   GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
-	      "Received message with type %u and size %u from `%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(&(cs->partner)));
-  cs->plugin->env->receive(cs->plugin->env->cls,
-                           &cs->partner,
-                           message, 1, NULL,
-                           NULL, 0);
+	      GNUNET_i2s(&(ps->peercontext)->identity),http_plugin_address_to_string(NULL,ps->addr,ps->addrlen));
+
+  pc->plugin->env->receive (ps->peercontext->plugin->env->cls,
+			    &pc->identity,
+			    message, 1, ps,
+			    ps->addr,
+			    ps->addrlen);
+}
+
+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);
+
+  GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
+              "Forwarding message to transport service, type %u and size %u from `%s' (`%s')\n",
+              ntohs(message->type),
+              ntohs(message->size),
+              GNUNET_i2s(&(pc->identity)),http_plugin_address_to_string(NULL,ps->addr,ps->addrlen));
+
+  pc->plugin->env->receive (pc->plugin->env->cls,
+                            &pc->identity,
+                            message, 1, ps,
+                            ps->addr,
+                            ps->addrlen);
 }
 
+
 /**
  * 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
@@ -422,6 +546,56 @@ acceptPolicyCallback (void *cls,
   return MHD_YES;
 }
 
+int mhd_send_callback (void *cls, uint64_t pos, char *buf, int max)
+{
+  int bytes_read = 0;
+
+  struct Session * ps = cls;
+  struct HTTP_PeerContext * pc;
+  struct HTTP_Message * msg;
+  int res;res=5;
+
+  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)
+  {
+    GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,"mhd_send_callback %X: queue msg size: %u, max %u pos %u msg->pos %u\n",ps,msg->size,max,pos,msg->pos);
+    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);
+      GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,"mhd_send_callback %X: complete: size %u pos %u bytes read %u \n",ps,msg->size,msg->pos,bytes_read);
+    }
+    else
+    {
+      memcpy(buf,&msg->buf[msg->pos],max);
+      msg->pos+=max;
+      bytes_read = max;
+      GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,"mhd_send_callback %X: partial: size %u pos %u bytes read %u \n",ps,msg->size,msg->pos,bytes_read);
+    }
+
+    if (msg->pos==msg->size)
+    {
+      struct GNUNET_MessageHeader * tmp = (struct GNUNET_MessageHeader *) msg->buf;
+      GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,"MHD SENT MESSAGE %u bytes msg->type %u msg->size %u\n", bytes_read, ntohs(tmp->type), ntohs(tmp->size));
+      if (NULL!=msg->transmit_cont)
+        msg->transmit_cont (msg->transmit_cont_cls,&pc->identity,GNUNET_OK);
+      res = remove_http_message(ps,msg);
+    }
+  }
+  return bytes_read;
+}
+
 /**
  * Process GET or PUT request received via MHD.  For
  * GET, queue response that will send back our pending
@@ -430,8 +604,8 @@ acceptPolicyCallback (void *cls,
  * already exists and create a new one if not.
  */
 static int
-accessHandlerCallback (void *cls,
-                       struct MHD_Connection *session,
+mdh_access_cb (void *cls,
+                       struct MHD_Connection *mhd_connection,
                        const char *url,
                        const char *method,
                        const char *version,
@@ -440,28 +614,51 @@ accessHandlerCallback (void *cls,
 {
   struct Plugin *plugin = cls;
   struct MHD_Response *response;
-  struct Session * cs;
   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;
+  struct Session *ps_tmp;
+
+  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)
+  if (NULL == *httpSessionCache)
   {
-    /* check url for peer identity */
-    res = GNUNET_CRYPTO_hash_from_string ( &url[1], &(pi_in.hashPubKey));
+    /* check url for peer identity , if invalid send HTTP 404*/
+    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 (session, MHD_HTTP_NOT_FOUND, response);
+      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");
@@ -469,8 +666,28 @@ accessHandlerCallback (void *cls,
         GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,"Peer has no valid ident, could not send error\n");
       return res;
     }
+  }
+  else
+  {
+    ps = *httpSessionCache;
+    pc = ps->peercontext;
+  }
 
-    conn_info = MHD_get_connection_info(session, MHD_CONNECTION_INFO_CLIENT_ADDRESS );
+  if (NULL == *httpSessionCache)
+  {
+    /* 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;
+      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 */
     if ( AF_INET == conn_info->client_addr->sin_family)
     {
@@ -478,153 +695,132 @@ 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;
+      addr = &ipv4addr;
+      addr_len = sizeof(struct IPv4HttpAddress);
     }
     /* Incoming IPv6 connection */
     if ( AF_INET6 == conn_info->client_addr->sin_family)
     {
       addrin6 = (struct sockaddr_in6 *) conn_info->client_addr;
       inet_ntop(addrin6->sin6_family, &(addrin6->sin6_addr),address,INET6_ADDRSTRLEN);
-      memcpy(&ipv6addr.ipv6_addr,&(addrin6->sin6_addr),sizeof(struct in_addr));
+      memcpy(&ipv6addr.ipv6_addr,&(addrin6->sin6_addr),sizeof(struct in6_addr));
       ipv6addr.u6_port = addrin6->sin6_port;
-    }
-    /* find existing session for address */
-    cs = GNUNET_CONTAINER_multihashmap_get (plugin->sessions, &pi_in.hashPubKey);
-    /* no existing session, create a new one*/
-    if (cs == NULL )
-    {
-      /* create new session object */
-      if ( AF_INET6 == conn_info->client_addr->sin_family)
-        cs = create_session(plugin, (char *) &ipv6addr, sizeof(struct IPv6HttpAddress),NULL, 0, &pi_in);
-      if ( AF_INET == conn_info->client_addr->sin_family)
-        cs = create_session(plugin, (char *) &ipv4addr, sizeof(struct IPv4HttpAddress),NULL, 0, &pi_in);
-
-      /* Insert session into hashmap */
-      GNUNET_CONTAINER_multihashmap_put ( plugin->sessions,
-                                          &cs->partner.hashPubKey,
-                                          cs,
-                                          GNUNET_CONTAINER_MULTIHASHMAPOPTION_UNIQUE_ONLY);
-
-      GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,"New Session for peer `%s' inserted\n", GNUNET_i2s(&cs->partner));
+      addr = &ipv6addr;
+      addr_len = sizeof(struct IPv6HttpAddress);
     }
 
-    /* Set closure and update current session*/
-    if (*httpSessionCache == NULL)
+
+    //ps = get_Session(plugin, pc, addr, addr_len);
+    ps = NULL;
+    /* only inbound sessions here */
+
+    ps_tmp = pc->head;
+    while (ps_tmp!=NULL)
     {
-      *httpSessionCache = cs;
-      /* Updating session */
-      /*
-      memcpy(cs->addr_inbound,conn_info->client_addr, sizeof(struct sockaddr_in));
-      if ( AF_INET == cs->addr_inbound->sin_family)
+      if ((ps_tmp->direction==INBOUND) && (ps_tmp->session_id == id_num) && (id_num!=0))
       {
-        GNUNET_asprintf(&cs->addr_inbound_str,"%s:%u",address,ntohs(cs->addr_inbound->sin_port));
+        if ((ps_tmp->recv_force_disconnect!=GNUNET_YES) && (ps_tmp->send_force_disconnect!=GNUNET_YES))
+        ps=ps_tmp;
+        break;
       }
+      ps_tmp=ps_tmp->next;
+    }
 
-      if ( AF_INET6 == cs->addr_inbound->sin_family)
-      {
-        GNUNET_asprintf(&cs->addr_inbound_str,"[%s]:%u",address,ntohs(cs->addr_inbound->sin_port));
-
-      }
-      */
-      if (cs->msgtok==NULL)
-        cs->msgtok = GNUNET_SERVER_mst_create (GNUNET_SERVER_MAX_MESSAGE_SIZE, &messageTokenizerCallback, cs);
+    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'\n",method, GNUNET_i2s(&cs->partner));
-  }
-  else
-  {
-    cs = *httpSessionCache;
+
+    *httpSessionCache = ps;
+    if (ps->msgtok==NULL)
+      ps->msgtok = GNUNET_SERVER_mst_create (&mhd_write_mst_cb, ps);
+
+    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(&pc->identity),
+                http_plugin_address_to_string(NULL, ps->addr, ps->addrlen));
   }
+
   /* Is it a PUT or a GET request */
   if (0 == strcmp (MHD_HTTP_METHOD_PUT, method))
   {
-    /* New  */
-    if ((*upload_data_size == 0) && (cs->is_put_in_progress == GNUNET_NO))
+    if (ps->recv_force_disconnect)
     {
-      if (cs->pending_inbound_msg.bytes_recv !=0 )
-      {
-        GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
-                    _("Incoming message from peer `%s', while existing message with %u bytes was not forwarded to transport'\n"),
-                    GNUNET_i2s(&cs->partner), cs->pending_inbound_msg.bytes_recv);
-        cs->pending_inbound_msg.bytes_recv = 0;
-      }
-      /* not yet ready */
-      cs->is_put_in_progress = GNUNET_YES;
-      cs->is_bad_request = GNUNET_NO;
-      return MHD_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) && (cs->is_bad_request != GNUNET_YES))
+    if ((*upload_data_size == 0) && (ps->recv_active==GNUNET_NO))
     {
-      if (*upload_data_size + cs->pending_inbound_msg.bytes_recv <= GNUNET_SERVER_MAX_MESSAGE_SIZE)
-      {
-        /* copy uploaded data to buffer */
-
-        res = GNUNET_SERVER_mst_receive(cs->msgtok, cs, upload_data,*upload_data_size, GNUNET_YES, GNUNET_NO);
-        GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,"%u bytes forwarded to MST: result: %u\n",*upload_data_size, res);
-        cs->pending_inbound_msg.bytes_recv += *upload_data_size;
-        *upload_data_size = 0;
-        return MHD_YES;
-      }
-      else
-      {
-        GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,"%u bytes not added to message of %u bytes, message to big\n",*upload_data_size, cs->pending_inbound_msg.bytes_recv);
-        cs->is_bad_request = GNUNET_YES;
-        /* (*upload_data_size) bytes not processed */
-        return MHD_YES;
-      }
+      ps->recv_endpoint = mhd_connection;
+      ps->recv_connected = GNUNET_YES;
+      ps->recv_active = GNUNET_YES;
+#if DEBUG_CONNECTIONS
+      GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,"Connection %X: inbound PUT connection connected\n",ps);
+#endif
+      return MHD_YES;
     }
 
-    if ((cs->is_put_in_progress == GNUNET_YES) && (cs->is_bad_request == GNUNET_YES))
+    /* Transmission of all data complete */
+    if ((*upload_data_size == 0) && (ps->recv_active == GNUNET_YES))
     {
-      *upload_data_size = 0;
       response = MHD_create_response_from_data (strlen (HTTP_PUT_RESPONSE),HTTP_PUT_RESPONSE, MHD_NO, MHD_NO);
-      res = MHD_queue_response (session, MHD_HTTP_REQUEST_ENTITY_TOO_LARGE, response);
-      if (res == MHD_YES)
-      {
-        GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,"Sent HTTP/1.1: 413 Request Entity Too Large as PUT Response\n");
-        cs->is_bad_request = GNUNET_NO;
-        cs->is_put_in_progress =GNUNET_NO;
-        cs->pending_inbound_msg.bytes_recv = 0;
-      }
+      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;
     }
 
-    /* Transmission of all data complete */
-    if ((*upload_data_size == 0) && (cs->is_put_in_progress == GNUNET_YES) && (cs->is_bad_request == GNUNET_NO))
+    /* Recieving data */
+    if ((*upload_data_size > 0) && (ps->recv_active == GNUNET_YES))
     {
-      send_error_to_client = GNUNET_YES;
-      if (cs->pending_inbound_msg.bytes_recv >= sizeof (struct GNUNET_MessageHeader))
-          send_error_to_client = GNUNET_NO;
-
-      if (send_error_to_client == GNUNET_NO)
-      {
-        response = MHD_create_response_from_data (strlen (HTTP_PUT_RESPONSE),HTTP_PUT_RESPONSE, MHD_NO, MHD_NO);
-        res = MHD_queue_response (session, 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);
-      }
-      else
-      {
-        response = MHD_create_response_from_data (strlen (HTTP_PUT_RESPONSE),HTTP_PUT_RESPONSE, MHD_NO, MHD_NO);
-        res = MHD_queue_response (session, MHD_HTTP_BAD_REQUEST, response);
-        MHD_destroy_response (response);
-        GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,"Sent HTTP/1.1: 400 BAD REQUEST as PUT Response\n");
-      }
-      cs->is_put_in_progress = GNUNET_NO;
-      cs->is_bad_request = GNUNET_NO;
-      cs->pending_inbound_msg.bytes_recv = 0;
-      return res;
+      res = GNUNET_SERVER_mst_receive(ps->msgtok, ps, upload_data,*upload_data_size, GNUNET_NO, GNUNET_NO);
+      (*upload_data_size) = 0;
+      return MHD_YES;
     }
+    else
+      return MHD_NO;
   }
   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);
-    response = MHD_create_response_from_data (strlen (HTTP_PUT_RESPONSE),HTTP_PUT_RESPONSE, MHD_NO, MHD_NO);
-    res = MHD_queue_response (session, MHD_HTTP_OK, response);
+    if (ps->send_force_disconnect)
+    {
+#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;
+    }
+    ps->send_connected = GNUNET_YES;
+    ps->send_active = GNUNET_YES;
+    ps->send_endpoint = mhd_connection;
+#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 res;
+    return MHD_YES;
   }
   return MHD_NO;
 }
@@ -756,25 +952,95 @@ static void http_server_daemon_v6_run (void *cls,
 }
 
 /**
- * Removes a message from the linked list of messages
- * @param ses session to remove message from
- * @param msg message to remove
- * @return GNUNET_SYSERR if msg not found, GNUNET_OK on success
+ * 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);
 
-static int remove_http_message(struct Session * ses, struct HTTP_Message * msg)
+static size_t curl_get_header_function( void *ptr, size_t size, size_t nmemb, void *stream)
 {
-  GNUNET_CONTAINER_DLL_remove(ses->pending_outbound_msg_head,ses->pending_outbound_msg_tail,msg);
-  GNUNET_free (msg->dest_url);
-  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 DEBUG_HTTP
+    GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Header: `%s' %u \n",tmp, http_result);
+#endif
+  }
+  if (NULL != tmp)
+    GNUNET_free (tmp);
+
+  return size * nmemb;
+}
+
+static size_t curl_put_header_function( 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)
@@ -788,8 +1054,8 @@ 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_CURL
-    GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Header: `%s'\n",tmp);
+#if DEBUG_HTTP
+    GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Header: `%s' %u \n",tmp, http_result);
 #endif
   }
   if (NULL != tmp)
@@ -807,15 +1073,25 @@ 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 Session * ses = ptr;
-  struct HTTP_Message * msg = ses->pending_outbound_msg_tail;
+  struct Session * ps = ptr;
+  struct HTTP_Message * msg = ps->pending_msgs_tail;
   size_t bytes_sent;
   size_t len;
 
+  if (ps->pending_msgs_tail == NULL)
+  {
+#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 = ps->pending_msgs_tail;
   /* data to send */
-  if (( msg->pos < msg->size))
+  if (msg->pos < msg->size)
   {
     /* data fit in buffer */
     if ((msg->size - msg->pos) <= (size * nmemb))
@@ -838,6 +1114,17 @@ static size_t send_read_callback(void *stream, size_t size, size_t nmemb, void *
   {
     bytes_sent = 0;
   }
+
+  if ( msg->pos == msg->size)
+  {
+#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 != 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;
 }
 
@@ -850,83 +1137,162 @@ 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)
+static size_t curl_receive_cb( void *stream, size_t size, size_t nmemb, void *ptr)
 {
-  char * data = NULL;
+  struct Session * ps = ptr;
+#if DEBUG_CONNECTIONS
+  GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,"Connection %X: %u bytes received\n",ps, size*nmemb);
+#endif
 
-  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);
-  }
+  struct GNUNET_MessageHeader * msg = stream;
+  GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,"Connection %X: %u bytes msg->type %u msg->size %u\n",ps, size*nmemb, ntohs(msg->type), ntohs(msg->size));
+
+  // GNUNET_SERVER_mst_receive(ps->msgtok, ps, stream, size*nmemb, GNUNET_NO, GNUNET_NO);
   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_prepare(void *cls, struct Session* ses );
+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_select_init (void *cls, struct Session* ses , struct HTTP_Connection *con)
+static ssize_t send_check_connections (void *cls, struct Session *ps)
 {
   struct Plugin *plugin = cls;
   int bytes_sent = 0;
   CURLMcode mret;
   struct HTTP_Message * msg;
+  struct GNUNET_TIME_Relative timeout = GNUNET_CONSTANTS_IDLE_CONNECTION_TIMEOUT;
 
-  /* already connected, no need to initiate connection */
-  if (con->connected == GNUNET_YES)
-    return bytes_sent;
-
-
-  /* not connected, initiate connection */
   GNUNET_assert(cls !=NULL);
-  if ( NULL == con->curl_handle)
-    con->curl_handle = curl_easy_init();
-  GNUNET_assert (con->curl_handle != NULL);
-
-  GNUNET_assert (NULL != con->pending_msgs_tail);
-  msg = con->pending_msgs_tail;
 
+  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(con->curl_handle, CURLOPT_VERBOSE, 1L);
+        curl_easy_setopt(ps->recv_endpoint, CURLOPT_VERBOSE, 1L);
 #endif
-  curl_easy_setopt(con->curl_handle, CURLOPT_URL, con->url);
-  curl_easy_setopt(con->curl_handle, CURLOPT_PUT, 1L);
-  curl_easy_setopt(con->curl_handle, CURLOPT_HEADERFUNCTION, &header_function);
-  curl_easy_setopt(con->curl_handle, CURLOPT_WRITEHEADER, con);
-  curl_easy_setopt(con->curl_handle, CURLOPT_READFUNCTION, send_read_callback);
-  curl_easy_setopt(con->curl_handle, CURLOPT_READDATA, con);
-  curl_easy_setopt(con->curl_handle, CURLOPT_WRITEFUNCTION, send_write_callback);
-  curl_easy_setopt(con->curl_handle, CURLOPT_READDATA, con);
-  curl_easy_setopt(con->curl_handle, CURLOPT_INFILESIZE_LARGE, (curl_off_t) msg->size);
-  curl_easy_setopt(con->curl_handle, CURLOPT_TIMEOUT, GNUNET_CONSTANTS_IDLE_CONNECTION_TIMEOUT);
-  GNUNET_assert (CURLE_OK == curl_easy_setopt(con->curl_handle, CURLOPT_PRIVATE, ses));
-  curl_easy_setopt(con->curl_handle, CURLOPT_CONNECTTIMEOUT, HTTP_CONNECT_TIMEOUT);
-  curl_easy_setopt(con->curl_handle, CURLOPT_BUFFERSIZE, GNUNET_SERVER_MAX_MESSAGE_SIZE);
-
-  mret = curl_multi_add_handle(plugin->multi_handle, con->curl_handle);
-  if (mret != CURLM_OK)
+        curl_easy_setopt(ps->recv_endpoint, CURLOPT_URL, ps->url);
+        curl_easy_setopt(ps->recv_endpoint, CURLOPT_HEADERFUNCTION, &curl_get_header_function);
+        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,
+                      _("%s failed at %s:%d: `%s'\n"),
+                      "curl_multi_add_handle", __FILE__, __LINE__,
+                      curl_multi_strerror (mret));
+          return -1;
+        }
+        bytes_sent = send_schedule (plugin, NULL);
+#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 0;
+
+    /* 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 bytes_sent;
+      }
+      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
+        curl_easy_pause(ps->send_endpoint,CURLPAUSE_CONT);
+        ps->send_active=GNUNET_YES;
+        return bytes_sent;
+      }
+    }
+    /* 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;
+
+  #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_function);
+    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,
+                  _("%s failed at %s:%d: `%s'\n"),
+                  "curl_multi_add_handle", __FILE__, __LINE__,
+                  curl_multi_strerror (mret));
+      return -1;
+    }
+    bytes_sent = send_schedule (plugin, NULL);
+    return bytes_sent;
+  }
+  if (ps->direction == INBOUND)
   {
-    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_assert (NULL != ps->pending_msgs_tail);
+    bytes_sent = 0;
+    msg = ps->pending_msgs_tail;
+    if ((ps->recv_connected==GNUNET_YES) && (ps->send_connected==GNUNET_YES))
+        bytes_sent = msg->size;
+    return bytes_sent;
   }
-  bytes_sent = send_prepare (plugin, ses);
-  return bytes_sent;
+  return 0;
 }
 
 static void send_execute (void *cls,
@@ -937,7 +1303,9 @@ static void send_execute (void *cls,
   int running;
   struct CURLMsg *msg;
   CURLMcode mret;
-  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);
@@ -955,14 +1323,14 @@ static void send_execute (void *cls,
             {
 
               msg = curl_multi_info_read (plugin->multi_handle, &running);
-              GNUNET_break (msg != NULL);
               if (msg == NULL)
                 break;
               /* get session for affected curl handle */
               GNUNET_assert ( msg->easy_handle != NULL );
-              curl_easy_getinfo(msg->easy_handle, CURLINFO_PRIVATE, &cs);
-              GNUNET_assert ( cs != NULL );
-              GNUNET_assert ( cs->pending_outbound_msg_tail != 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)
                 {
 
@@ -970,48 +1338,98 @@ static void send_execute (void *cls,
                   if ( (msg->data.result != CURLE_OK) &&
                        (msg->data.result != CURLE_GOT_NOTHING) )
                   {
-                    GNUNET_log(GNUNET_ERROR_TYPE_INFO,
-                               _("%s failed for `%s' at %s:%d: `%s'\n"),
-                               "curl_multi_perform",
-                               GNUNET_i2s(&cs->partner),
-                               __FILE__,
-                               __LINE__,
-                               curl_easy_strerror (msg->data.result));
                     /* sending msg failed*/
-                    if (( NULL != cs->pending_outbound_msg_tail) && ( NULL != cs->pending_outbound_msg_tail->transmit_cont))
-                      cs->pending_outbound_msg_tail->transmit_cont (cs->pending_outbound_msg_tail->transmit_cont_cls,&cs->partner,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,msg->easy_handle);
+                      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,msg->easy_handle);
+                      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->partner), http_result );
-
-                    curl_easy_cleanup(cs->curl_handle);
-                    cs->curl_handle=NULL;
-
-                    /* Calling transmit continuation  */
-                    if (( NULL != cs->pending_outbound_msg_tail) && (NULL != cs->pending_outbound_msg_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))
-                        cs->pending_outbound_msg_tail->transmit_cont (cs->pending_outbound_msg_tail->transmit_cont_cls,&cs->partner,GNUNET_OK);
-                      /* HTTP 2xx: successful operations */
-                      if ((http_result >=200) && (http_result < 300))
-                        cs->pending_outbound_msg_tail->transmit_cont (cs->pending_outbound_msg_tail->transmit_cont_cls,&cs->partner,GNUNET_OK);
-                      /* HTTP 3xx..5xx: error */
-                      if ((http_result >=300) && (http_result < 600))
-                        cs->pending_outbound_msg_tail->transmit_cont (cs->pending_outbound_msg_tail->transmit_cont_cls,&cs->partner,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,msg->easy_handle);
+                      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,msg->easy_handle);
+                      curl_easy_cleanup(ps->recv_endpoint);
+                      ps->recv_endpoint=NULL;
                     }
                   }
-
-                  if (GNUNET_OK != remove_http_message(cs, cs->pending_outbound_msg_tail))
-                    GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Message could not be removed from session `%s'", GNUNET_i2s(&cs->partner));
-                  /* send pending messages */
-                  if (cs->pending_outbound_msg_tail!= NULL)
-                  {
-                    send_select_init (plugin, cs, NULL);
-                  }
+                  if ((ps->recv_connected == GNUNET_NO) && (ps->send_connected == GNUNET_NO))
+                    remove_session (pc, ps, GNUNET_YES, GNUNET_SYSERR);
                   return;
                 default:
                   break;
@@ -1023,7 +1441,7 @@ static void send_execute (void *cls,
       handles_last_run = running;
     }
   while (mret == CURLM_CALL_MULTI_PERFORM);
-  send_prepare(plugin, cls);
+  send_schedule(plugin, cls);
 }
 
 
@@ -1032,7 +1450,7 @@ static void send_execute (void *cls,
  * @param ses session to send data to
  * @return bytes sent to peer
  */
-static size_t send_prepare(void *cls, struct Session* ses )
+static size_t send_schedule(void *cls, struct Session* ses )
 {
   struct Plugin *plugin = cls;
   fd_set rs;
@@ -1087,133 +1505,38 @@ static size_t send_prepare(void *cls, struct Session* ses )
   return 0;
 }
 
-/**
- * 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
- */
-static struct Session * session_get (void * cls, const struct GNUNET_PeerIdentity *p)
-{
-  struct Plugin *plugin = cls;
-  struct Session *cs;
-  unsigned int res;
-
-  cs = GNUNET_CONTAINER_multihashmap_get (plugin->sessions, &p->hashPubKey);
-  if (cs != NULL)
-  {
-    GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
-                "Session `%s' found\n", GNUNET_i2s(p));
-  }
-  if (cs == NULL)
-  {
-    cs = create_session(plugin, NULL, 0, NULL, 0, p);
-    res = GNUNET_CONTAINER_multihashmap_put ( plugin->sessions,
-                                        &cs->partner.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)
-{
-  struct Plugin *plugin = cls;
-  char *address;
-  char *url;
-
-  GNUNET_assert ((addr!=NULL) && (addrlen != 0));
-  if (addrlen == (sizeof (struct IPv4HttpAddress)))
-  {
-    address = GNUNET_malloc(INET_ADDRSTRLEN + 1);
-    inet_ntop(AF_INET, &((struct IPv4HttpAddress *) addr)->ipv4_addr,address,INET_ADDRSTRLEN);
-    GNUNET_asprintf (&url,
-                     "http://%s:%u/%s",
-                     address,
-                     ntohs(((struct IPv4HttpAddress *) addr)->u_port),
-                     (char *) (&plugin->my_ascii_hash_ident));
-    GNUNET_free(address);
-  }
-  else if (addrlen == (sizeof (struct IPv6HttpAddress)))
-  {
-    address = GNUNET_malloc(INET6_ADDRSTRLEN + 1);
-    inet_ntop(AF_INET6, &((struct IPv6HttpAddress *) addr)->ipv6_addr,address,INET6_ADDRSTRLEN);
-    GNUNET_asprintf(&url,
-                    "http://%s:%u/%s",
-                    address,
-                    ntohs(((struct IPv6HttpAddress *) addr)->u6_port),
-                    (char *) (&plugin->my_ascii_hash_ident));
-    GNUNET_free(address);
-  }
-  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 p the session
- * @param addr address
- * @param addr_len address length
- * @return GNUNET_NO if address not known, GNUNET_YES if known
- */
-static struct HTTP_Connection * session_check_address (void * cls, struct Session *cs, const void * addr, size_t addr_len)
-{
-  struct Plugin *plugin = cls;
-  struct HTTP_Connection * cc = cs->outbound_addresses_head;
-  struct HTTP_Connection * con = NULL;
-
-  GNUNET_assert((addr_len == sizeof (struct IPv4HttpAddress)) || (addr_len == sizeof (struct IPv6HttpAddress)));
-
-  while (cc!=NULL)
-  {
-    if (addr_len == cc->addrlen)
-    {
-      if (0 == memcmp(cc->addr, addr, addr_len))
-      {
-        con = cc;
-        break;
-      }
-    }
-    cc=cc->next;
-  }
-  if (con==NULL)
-  {
-    con = GNUNET_malloc(sizeof(struct HTTP_Connection) + addr_len);
-    con->addrlen = addr_len;
-    con->addr=&con[1];
-    con->url=create_url(plugin, addr, addr_len);
-    con->connected = GNUNET_NO;
-    memcpy(con->addr, addr, addr_len);
-    GNUNET_CONTAINER_DLL_insert(cs->outbound_addresses_head,cs->outbound_addresses_tail,con);
-  }
-  return con;
-}
 
 /**
  * Function that can be used by the transport service to transmit
- * a message using the plugin.
+ * a message using the plugin.   Note that in the case of a
+ * peer disconnecting, the continuation MUST be called
+ * prior to the disconnect notification itself.  This function
+ * will be called with this peer's HELLO message to initiate
+ * a fresh connection to another peer.
  *
  * @param cls closure
  * @param target who should receive this message
- * @param priority how important is the message
  * @param msgbuf the message to transmit
  * @param msgbuf_size number of bytes in 'msgbuf'
- * @param to when should we time out
+ * @param priority how important is the message (most plugins will
+ *                 ignore message priority and just FIFO)
+ * @param timeout how long to wait at most for the transmission (does not
+ *                require plugins to discard the message after the timeout,
+ *                just advisory for the desired delay; most plugins will ignore
+ *                this as well)
  * @param session which session must be used (or NULL for "any")
  * @param addr the address to use (can be NULL if the plugin
  *                is "on its own" (i.e. re-use existing TCP connection))
  * @param addrlen length of the address in bytes
  * @param force_address GNUNET_YES if the plugin MUST use the given address,
- *                otherwise the plugin may use other addresses or
- *                existing connections (if available)
+ *                GNUNET_NO means the plugin may use any other address and
+ *                GNUNET_SYSERR means that only reliable existing
+ *                bi-directional connections should be used (regardless
+ *                of address)
  * @param cont continuation to call once the message has
  *        been transmitted (or if the transport is ready
  *        for the next transmission call; or if the
- *        peer disconnected...)
+ *        peer disconnected...); can be NULL
  * @param cont_cls closure for cont
  * @return number of bytes used (on the physical network, with overheads);
  *         -1 on hard errors (i.e. address invalid); 0 is a legal value
@@ -1234,20 +1557,128 @@ http_plugin_send (void *cls,
                   void *cont_cls)
 {
   struct Plugin *plugin = cls;
-  char *address;
-  char *url;
-  struct Session *cs;
   struct HTTP_Message *msg;
-  struct HTTP_Connection *con;
-  //unsigned int ret;
+
+  struct HTTP_PeerContext * pc;
+  struct Session * ps = NULL;
+  struct Session * ps_tmp = NULL;
 
   GNUNET_assert(cls !=NULL);
-  url = NULL;
-  address = NULL;
 
-  /* get session from hashmap */
-  cs = session_get(plugin, target);
-  con = session_check_address(plugin, cs, addr, addrlen);
+  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' using %s (%s) and session: %X\n",
+                                      msgbuf_size,
+                                      GNUNET_i2s(target),
+                                      force,
+                                      http_plugin_address_to_string(NULL, addr, addrlen),
+                                      session);
+  GNUNET_free(force);
+
+  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;
+    memcpy(&pc->identity, target, sizeof(struct GNUNET_PeerIdentity));
+    GNUNET_CONTAINER_multihashmap_put(plugin->peers, &pc->identity.hashPubKey, pc, GNUNET_CONTAINER_MULTIHASHMAPOPTION_UNIQUE_ONLY);
+  }
+
+  /* Search for existing session using the passed address */
+  if  ((addr!=NULL) && (addrlen != 0))
+  {
+    ps = get_Session(plugin, pc, addr, addrlen);
+  }
+  if (ps != NULL)
+    GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,"Found existing connection to peer %s with given address, using %X\n", GNUNET_i2s(target), ps);
+
+  /* Search for existing session using the passed session */
+  if ((ps==NULL) && (force_address != GNUNET_YES))
+  {
+    ps_tmp = pc->head;
+    while (ps_tmp!=NULL)
+    {
+      if ((ps_tmp==session) && (ps_tmp->recv_force_disconnect==GNUNET_NO) && (ps_tmp->send_force_disconnect==GNUNET_NO) &&
+          (ps_tmp->recv_connected==GNUNET_YES) && (ps_tmp->send_connected==GNUNET_YES))
+      {
+        GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,"Found existing connection to peer %s with given session, using inbound session %X\n", GNUNET_i2s(target), ps_tmp);
+        ps = ps_tmp;
+        break;
+      }
+      ps_tmp=ps_tmp->next;
+    }
+  }
+
+  /* session not existing, address not forced -> looking for other session */
+  if ((ps==NULL) && (force_address != GNUNET_YES))
+  {
+    GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,"No existing connection, but free to choose existing, searching for existing connection to peer %s\n", GNUNET_i2s(target));
+    /* Choosing different session to peer when possible */
+    struct Session * tmp = pc->head;
+    while (tmp!=NULL)
+    {
+      if ((tmp->recv_connected) && (tmp->send_connected) && (tmp->recv_force_disconnect==GNUNET_NO) && (tmp->send_force_disconnect==GNUNET_NO))
+      {
+        ps = tmp;
+      }
+      tmp = tmp->next;
+    }
+    if (ps != NULL)
+     GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,"No existing connection to peer %s, selected connection %X\n", GNUNET_i2s(target),ps);
+    else
+      GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,"No existing connection to peer %s, no connection found\n", GNUNET_i2s(target));
+  }
+
+  /* session not existing, but address forced -> creating new session */
+  if ((ps==NULL) || ((ps==NULL) && (force_address == GNUNET_YES)))
+  {
+    if ((addr!=NULL) && (addrlen!=0))
+    {
+      if (force_address == GNUNET_YES)
+        GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,"No existing connection & forced address: creating new connection to peer %s\n", GNUNET_i2s(target));
+      if (force_address != GNUNET_YES)
+        GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,"No existing connection: creating new connection to peer %s\n", GNUNET_i2s(target));
+
+      ps = GNUNET_malloc(sizeof (struct Session));
+      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
+    {
+      GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,"No existing session & and no address given: no way to send this message to peer `%s'!\n", GNUNET_i2s(target));
+      return -1;
+    }
+  }
 
   /* create msg */
   msg = GNUNET_malloc (sizeof (struct HTTP_Message) + msgbuf_size);
@@ -1255,39 +1686,12 @@ http_plugin_send (void *cls,
   msg->size = msgbuf_size;
   msg->pos = 0;
   msg->buf = (char *) &msg[1];
-  msg->dest_url = url;
   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)
-  {
-    /* enqueue in connection message queue */
-    GNUNET_CONTAINER_DLL_insert(con->pending_msgs_head,con->pending_msgs_tail,msg);
-  }
-  /* 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_select_init (plugin, cs, con);
-
-
-  /* insert created message in double linked list of pending messages */
-  /*
-  GNUNET_CONTAINER_DLL_insert (cs->pending_outbound_msg_head, cs->pending_outbound_msg_tail, msg);
-
-  GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,"HTTP Plugin: sending %u bytes of data from peer `%4.4s' to peer `%s'\n",msgbuf_size,(char *) &plugin->my_ascii_hash_ident,GNUNET_i2s(target));
-  GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,"HTTP Plugin: url `%s'\n",url);
-  if (msg == cs->pending_outbound_msg_tail)
-  {
-    return send_select_init (plugin, cs);
-  }
-  return msgbuf_size;
-  */
+  return send_check_connections (plugin, ps);
 }
 
 
@@ -1304,9 +1708,50 @@ static void
 http_plugin_disconnect (void *cls,
                             const struct GNUNET_PeerIdentity *target)
 {
-  GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,"HTTP Plugin: http_plugin_disconnect\n");
-  // struct Plugin *plugin = cls;
-  // FIXME
+
+  struct Plugin *plugin = cls;
+  struct HTTP_PeerContext *pc = NULL;
+  struct Session *ps = NULL;
+
+  pc = GNUNET_CONTAINER_multihashmap_get (plugin->peers, &target->hashPubKey);
+  if (pc==NULL)
+    return;
+
+  ps = pc->head;
+
+  while (ps!=NULL)
+  {
+    if (ps->direction==OUTBOUND)
+    {
+      if (ps->send_endpoint!=NULL)
+      {
+        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)
+      {
+       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)
+    {
+      ps->recv_force_disconnect = GNUNET_YES;
+      ps->send_force_disconnect = GNUNET_YES;
+    }
+    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;
+  }
+  GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,"All connections to peer `%s' terminated\n", GNUNET_i2s(target));
 }
 
 
@@ -1390,7 +1835,7 @@ http_plugin_address_pretty_printer (void *cls,
  */
 static int
 http_plugin_address_suggested (void *cls,
-                                  void *addr, size_t addrlen)
+                               const void *addr, size_t addrlen)
 {
   struct Plugin *plugin = cls;
   struct IPv4HttpAddress *v4;
@@ -1429,8 +1874,6 @@ http_plugin_address_suggested (void *cls,
         return GNUNET_SYSERR;
       }
     }
-
-
   return GNUNET_OK;
 }
 
@@ -1457,10 +1900,9 @@ http_plugin_address_to_string (void *cls,
   struct sockaddr_in6 a6;
   char * address;
   char * ret;
-  unsigned int port;
+  uint16_t port;
   unsigned int res;
 
-  GNUNET_assert(cls !=NULL);
   if (addrlen == sizeof (struct IPv6HttpAddress))
     {
       address = GNUNET_malloc (INET6_ADDRSTRLEN);
@@ -1506,28 +1948,28 @@ process_interfaces (void *cls,
                     const struct sockaddr *addr, socklen_t addrlen)
 {
   struct Plugin *plugin = cls;
-  struct IPv4HttpAddress t4;
-  struct IPv6HttpAddress t6;
+  struct IPv4HttpAddress * t4;
+  struct IPv6HttpAddress * t6;
   int af;
-  void *arg;
-  uint16_t args;
 
   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);
-      arg = &t4;
-      args = sizeof (t4);
+      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 */
@@ -1538,47 +1980,57 @@ process_interfaces (void *cls,
           /* skip loopback addresses */
           return GNUNET_OK;
         }
-      memcpy (&t6.ipv6_addr,
+      memcpy (&t6->ipv6_addr,
               &((struct sockaddr_in6 *) addr)->sin6_addr,
               sizeof (struct in6_addr));
-      t6.u6_port = htons (plugin->port_inbound);
-      arg = &t6;
-      args = sizeof (t6);
-    }
-  else
-    {
-      GNUNET_break (0);
-      return GNUNET_OK;
+      t6->u6_port = htons (plugin->port_inbound);
+      plugin->env->notify_address(plugin->env->cls,"http",t6,sizeof (struct IPv6HttpAddress) , GNUNET_TIME_UNIT_FOREVER_REL);
     }
-  plugin->env->notify_address(plugin->env->cls,"http",arg, args, GNUNET_TIME_UNIT_FOREVER_REL);
   return GNUNET_OK;
 }
 
-int hashMapFreeIterator (void *cls, const GNUNET_HashCode *key, void *value)
+int remove_peer_context_Iterator (void *cls, const GNUNET_HashCode *key, void *value)
 {
-  struct Session * cs = value;
+  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;
 
-  GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,"Freeing session for peer `%s'\n",GNUNET_i2s(&cs->partner));
+  GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,"Freeing context for peer `%s'\n",GNUNET_i2s(&pc->identity));
 
-  /* freeing messages */
-  struct HTTP_Message *cur;
-  struct HTTP_Message *tmp;
-  cur = cs->pending_outbound_msg_head;
-
-  while (cur != NULL)
+  while (ps!=NULL)
   {
-    tmp = cur->next;
-    GNUNET_free_non_null(cur->dest_url);
-    GNUNET_free (cur);
-    cur = tmp;
+    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;
   }
-  GNUNET_SERVER_mst_destroy (cs->msgtok);
-  GNUNET_free_non_null (cs->addr_in);
-  GNUNET_free_non_null (cs->addr_out);
-  GNUNET_free (cs);
+  GNUNET_free(pc);
   return GNUNET_YES;
 }
 
+
 /**
  * Exit point from the plugin.
  */
@@ -1590,7 +2042,6 @@ libgnunet_plugin_transport_http_done (void *cls)
   CURLMcode mret;
 
   GNUNET_assert(cls !=NULL);
-  GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,"Unloading http plugin...\n");
 
   if ( plugin->http_server_task_v4 != GNUNET_SCHEDULER_NO_TASK)
   {
@@ -1621,12 +2072,11 @@ libgnunet_plugin_transport_http_done (void *cls)
     plugin->http_server_daemon_v6 = NULL;
   }
 
-  /* free all sessions */
-  GNUNET_CONTAINER_multihashmap_iterate (plugin->sessions,
-                                         &hashMapFreeIterator,
+  /* free all peer information */
+  GNUNET_CONTAINER_multihashmap_iterate (plugin->peers,
+                                         &remove_peer_context_Iterator,
                                          NULL);
-
-  GNUNET_CONTAINER_multihashmap_destroy (plugin->sessions);
+  GNUNET_CONTAINER_multihashmap_destroy (plugin->peers);
 
   mret = curl_multi_cleanup(plugin->multi_handle);
   if ( CURLM_OK != mret)
@@ -1634,6 +2084,7 @@ libgnunet_plugin_transport_http_done (void *cls)
 
   GNUNET_free (plugin);
   GNUNET_free (api);
+  GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,"Unload http plugin complete...\n");
   return NULL;
 }
 
@@ -1655,7 +2106,8 @@ libgnunet_plugin_transport_http_init (void *cls)
 
   plugin = GNUNET_malloc (sizeof (struct Plugin));
   plugin->env = env;
-  plugin->sessions = NULL;
+  plugin->peers = NULL;
+
   api = GNUNET_malloc (sizeof (struct GNUNET_TRANSPORT_PluginFunctions));
   api->cls = plugin;
   api->send = &http_plugin_send;
@@ -1690,23 +2142,23 @@ libgnunet_plugin_transport_http_init (void *cls)
     {
     plugin->http_server_daemon_v6 = MHD_start_daemon (MHD_USE_IPv6,
                                        port,
-                                       &acceptPolicyCallback,
-                                       plugin , &accessHandlerCallback, plugin,
+                                       &mhd_accept_cb,
+                                       plugin , &mdh_access_cb, 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_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,
                                        port,
-                                       &acceptPolicyCallback,
-                                       plugin , &accessHandlerCallback, plugin,
+                                       &mhd_accept_cb,
+                                       plugin , &mdh_access_cb, 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_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)
@@ -1726,7 +2178,9 @@ libgnunet_plugin_transport_http_init (void *cls)
   }
 
   /* Initializing cURL */
+  curl_global_init(CURL_GLOBAL_ALL);
   plugin->multi_handle = curl_multi_init();
+
   if ( NULL == plugin->multi_handle )
   {
     GNUNET_log_from (GNUNET_ERROR_TYPE_ERROR,
@@ -1737,7 +2191,7 @@ libgnunet_plugin_transport_http_init (void *cls)
     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;