added second example scenario
[strongswan.git] / src / libcharon / network / receiver.c
index df89702..63a8cab 100644 (file)
@@ -103,7 +103,22 @@ struct private_receiver_t {
        /**
         * Delay for receiving incoming packets, to simulate larger RTT
         */
-       u_int receive_delay;
+       int receive_delay;
+
+       /**
+        * Specific message type to delay, 0 for any
+        */
+       int receive_delay_type;
+
+       /**
+        * Delay request messages?
+        */
+       bool receive_delay_request;
+
+       /**
+        * Delay response messages?
+        */
+       bool receive_delay_response;
 };
 
 /**
@@ -242,7 +257,7 @@ static bool cookie_required(private_receiver_t *this, message_t *message)
 /**
  * check if peer has to many half open IKE_SAs
  */
-static bool peer_to_aggressive(private_receiver_t *this, message_t *message)
+static bool peer_too_aggressive(private_receiver_t *this, message_t *message)
 {
        if (charon->ike_sa_manager->get_half_open_count(charon->ike_sa_manager,
                                                message->get_source(message)) >= this->block_threshold)
@@ -259,7 +274,6 @@ static job_requeue_t receive_packets(private_receiver_t *this)
 {
        packet_t *packet;
        message_t *message;
-       job_t *job;
 
        /* read in a packet */
        if (charon->socket->receive(charon->socket, &packet) != SUCCESS)
@@ -321,7 +335,7 @@ static job_requeue_t receive_packets(private_receiver_t *this)
                }
 
                /* check if peer has not too many IKE_SAs half open */
-               if (this->block_threshold && peer_to_aggressive(this, message))
+               if (this->block_threshold && peer_too_aggressive(this, message))
                {
                        DBG1(DBG_NET, "ignoring IKE_SA setup from %H, "
                                 "peer too aggressive", message->get_source(message));
@@ -329,16 +343,25 @@ static job_requeue_t receive_packets(private_receiver_t *this)
                        return JOB_REQUEUE_DIRECT;
                }
        }
-       job = (job_t*)process_message_job_create(message);
        if (this->receive_delay)
        {
-               charon->scheduler->schedule_job_ms(charon->scheduler,
-                                                                                  job, this->receive_delay);
-       }
-       else
-       {
-               charon->processor->queue_job(charon->processor, job);
+               if (this->receive_delay_type == 0 ||
+                       this->receive_delay_type == message->get_exchange_type(message))
+               {
+                       if ((message->get_request(message) && this->receive_delay_request) ||
+                               (!message->get_request(message) && this->receive_delay_response))
+                       {
+                               DBG1(DBG_NET, "using receive delay: %dms",
+                                        this->receive_delay);
+                               charon->scheduler->schedule_job_ms(charon->scheduler,
+                                                               (job_t*)process_message_job_create(message),
+                                                               this->receive_delay);
+                               return JOB_REQUEUE_DIRECT;
+                       }
+               }
        }
+       charon->processor->queue_job(charon->processor,
+                                                                (job_t*)process_message_job_create(message));
        return JOB_REQUEUE_DIRECT;
 }
 
@@ -374,6 +397,12 @@ receiver_t *receiver_create()
        }
        this->receive_delay = lib->settings->get_int(lib->settings,
                                                "charon.receive_delay", 0);
+       this->receive_delay_type = lib->settings->get_int(lib->settings,
+                                               "charon.receive_delay_type", 0),
+       this->receive_delay_request = lib->settings->get_bool(lib->settings,
+                                               "charon.receive_delay_request", TRUE),
+       this->receive_delay_response = lib->settings->get_int(lib->settings,
+                                               "charon.receive_delay_response", TRUE),
 
        this->hasher = lib->crypto->create_hasher(lib->crypto, HASH_PREFERRED);
        if (this->hasher == NULL)