Fixed crashed caused by sending messages that have been read previously

(which were sent with incorrect length).

src/network/network_string.hpp

@@ -152,6 +152,12 @@ public:
     /** Returns the remaining length of the network string. */
     unsigned int size() const { return (int)m_buffer.size()-m_current_offset; }
 
+    // ------------------------------------------------------------------------
+    /** Returns the send size, which is the full length of the buffer. A 
+     *  difference to size() happens if the string to be sent was previously
+     *  read, and has m_current_offset != 0. Even in this case the whole
+     *  string must be sent. */
+    unsigned int getTotalSize() const { return m_buffer.size(); }
     // ------------------------------------------------------------------------
     // All functions related to adding data to a network string
     /** Add 8 bit unsigned int. */

src/network/stk_peer.cpp

@@ -69,7 +69,8 @@ void STKPeer::sendPacket(NetworkString *data, bool reliable)
     Log::verbose("STKPeer", "sending packet of size %d to %s",
                  data->size(), a.toString().c_str());
          
-    ENetPacket* packet = enet_packet_create(data->getData(), data->size(),
+    ENetPacket* packet = enet_packet_create(data->getData(),
+                                            data->getTotalSize(),
                                     (reliable ? ENET_PACKET_FLAG_RELIABLE
                                               : ENET_PACKET_FLAG_UNSEQUENCED));
     enet_peer_send(m_enet_peer, 0, packet);