예제 #1
0
파일: peer.c 프로젝트: 7histle/openspades
void
enet_peer_dispatch_incoming_unreliable_commands (ENetPeer * peer, ENetChannel * channel)
{
    ENetListIterator droppedCommand, startCommand, currentCommand;

    for (droppedCommand = startCommand = currentCommand = enet_list_begin (& channel -> incomingUnreliableCommands);
         currentCommand != enet_list_end (& channel -> incomingUnreliableCommands);
         currentCommand = enet_list_next (currentCommand))
    {
       ENetIncomingCommand * incomingCommand = (ENetIncomingCommand *) currentCommand;

       if ((incomingCommand -> command.header.command & ENET_PROTOCOL_COMMAND_MASK) == ENET_PROTOCOL_COMMAND_SEND_UNSEQUENCED)
         continue;
       else
       if (incomingCommand -> reliableSequenceNumber != channel -> incomingReliableSequenceNumber)
         break;
       else
       if (incomingCommand -> fragmentsRemaining <= 0)
         channel -> incomingUnreliableSequenceNumber = incomingCommand -> unreliableSequenceNumber;
       else
       if (startCommand == currentCommand)
         startCommand = enet_list_next (currentCommand);
       else
       {
            enet_list_move (enet_list_end (& peer -> dispatchedCommands), startCommand, enet_list_previous (currentCommand));

            if (! peer -> needsDispatch)
            {
                enet_list_insert (enet_list_end (& peer -> host -> dispatchQueue), & peer -> dispatchList);

                peer -> needsDispatch = 1;
            }

            droppedCommand = startCommand = enet_list_next (currentCommand); 
       }
    }

    if (startCommand != currentCommand)
    {
        enet_list_move (enet_list_end (& peer -> dispatchedCommands), startCommand, enet_list_previous (currentCommand));

        if (! peer -> needsDispatch)
        {
            enet_list_insert (enet_list_end (& peer -> host -> dispatchQueue), & peer -> dispatchList);

            peer -> needsDispatch = 1;
        }

        droppedCommand = startCommand = enet_list_next (currentCommand);
    }

    enet_peer_remove_incoming_commands (& channel -> incomingUnreliableCommands, enet_list_begin (& channel -> incomingUnreliableCommands), droppedCommand);
}
예제 #2
0
파일: peer.cpp 프로젝트: Kittnz/FoxEmu
ENetIncomingCommand *
enet_peer_queue_incoming_command (ENetPeer * peer, const ENetProtocol * command, ENetPacket * packet, enet_uint32 fragmentCount)
{
    static ENetIncomingCommand dummyCommand;

    ENetChannel * channel = & peer -> channels [command -> header.channelID];
    enet_uint32 unreliableSequenceNumber = 0, reliableSequenceNumber;
    enet_uint16 reliableWindow, currentWindow;
    ENetIncomingCommand * incomingCommand;
    ENetListIterator currentCommand;

    if (peer -> state == ENET_PEER_STATE_DISCONNECT_LATER)
      goto freePacket;

    if ((command -> header.command & ENET_PROTOCOL_COMMAND_MASK) != ENET_PROTOCOL_COMMAND_SEND_UNSEQUENCED)
    {
        reliableSequenceNumber = command -> header.reliableSequenceNumber;
        reliableWindow = reliableSequenceNumber / ENET_PEER_RELIABLE_WINDOW_SIZE;
        currentWindow = channel -> incomingReliableSequenceNumber / ENET_PEER_RELIABLE_WINDOW_SIZE;

        if (reliableSequenceNumber < channel -> incomingReliableSequenceNumber)
           reliableWindow += ENET_PEER_RELIABLE_WINDOWS;

        if (reliableWindow < currentWindow || reliableWindow >= currentWindow + ENET_PEER_FREE_RELIABLE_WINDOWS - 1)
          goto freePacket;
    }
                    
    switch (command -> header.command & ENET_PROTOCOL_COMMAND_MASK)
    {
    case ENET_PROTOCOL_COMMAND_SEND_FRAGMENT:
    case ENET_PROTOCOL_COMMAND_SEND_RELIABLE:
       if (reliableSequenceNumber == channel -> incomingReliableSequenceNumber)
           goto freePacket;
       
       for (currentCommand = enet_list_previous (enet_list_end (& channel -> incomingReliableCommands));
            currentCommand != enet_list_end (& channel -> incomingReliableCommands);
            currentCommand = enet_list_previous (currentCommand))
       {
          incomingCommand = (ENetIncomingCommand *) currentCommand;

          if (reliableSequenceNumber >= channel -> incomingReliableSequenceNumber)
          {
             if (incomingCommand -> reliableSequenceNumber < channel -> incomingReliableSequenceNumber)
               continue;
          }
          else
          if (incomingCommand -> reliableSequenceNumber >= channel -> incomingReliableSequenceNumber)
            break;

          if (incomingCommand -> reliableSequenceNumber <= reliableSequenceNumber)
          {
             if (incomingCommand -> reliableSequenceNumber < reliableSequenceNumber)
               break;

             goto freePacket;
          }
       }
       break;

    case ENET_PROTOCOL_COMMAND_SEND_UNRELIABLE:
       unreliableSequenceNumber = ENET_NET_TO_HOST_16 (command -> sendUnreliable.unreliableSequenceNumber);

       if (reliableSequenceNumber == channel -> incomingReliableSequenceNumber &&
           unreliableSequenceNumber <= channel -> incomingUnreliableSequenceNumber)
           goto freePacket;

       for (currentCommand = enet_list_previous (enet_list_end (& channel -> incomingUnreliableCommands));
            currentCommand != enet_list_end (& channel -> incomingUnreliableCommands);
            currentCommand = enet_list_previous (currentCommand))
       {
          incomingCommand = (ENetIncomingCommand *) currentCommand;

          if ((incomingCommand -> command.header.command & ENET_PROTOCOL_COMMAND_MASK) != ENET_PROTOCOL_COMMAND_SEND_UNRELIABLE)
            continue;

          if (reliableSequenceNumber >= channel -> incomingReliableSequenceNumber)
          {
             if (incomingCommand -> reliableSequenceNumber < channel -> incomingReliableSequenceNumber)
               continue;
          }
          else
          if (incomingCommand -> reliableSequenceNumber >= channel -> incomingReliableSequenceNumber)
            break;

          if (incomingCommand -> reliableSequenceNumber < reliableSequenceNumber)
            break;

          if (incomingCommand -> reliableSequenceNumber > reliableSequenceNumber)
            continue;

          if (incomingCommand -> unreliableSequenceNumber <= unreliableSequenceNumber)
          {
             if (incomingCommand -> unreliableSequenceNumber < unreliableSequenceNumber)
               break;

             goto freePacket;
          }
       }
       break;

    case ENET_PROTOCOL_COMMAND_SEND_UNSEQUENCED:
       currentCommand = enet_list_end (& channel -> incomingUnreliableCommands);
       break;

    default:
       goto freePacket;
    }

    incomingCommand = (ENetIncomingCommand *) enet_malloc (sizeof (ENetIncomingCommand));
    if (incomingCommand == NULL)
      goto notifyError;

    incomingCommand -> reliableSequenceNumber = command -> header.reliableSequenceNumber;
    incomingCommand -> unreliableSequenceNumber = unreliableSequenceNumber & 0xFFFF;
    incomingCommand -> command = * command;
    incomingCommand -> fragmentCount = fragmentCount;
    incomingCommand -> fragmentsRemaining = fragmentCount;
    incomingCommand -> packet = packet;
    incomingCommand -> fragments = NULL;
    
    if (fragmentCount > 0)
    { 
       incomingCommand -> fragments = (enet_uint32 *) enet_malloc ((fragmentCount + 31) / 32 * sizeof (enet_uint32));
       if (incomingCommand -> fragments == NULL)
       {
          enet_free (incomingCommand);

          goto notifyError;
       }
       memset (incomingCommand -> fragments, 0, (fragmentCount + 31) / 32 * sizeof (enet_uint32));
    }

    if (packet != NULL)
      ++ packet -> referenceCount;

    enet_list_insert (enet_list_next (currentCommand), incomingCommand);

    switch (command -> header.command & ENET_PROTOCOL_COMMAND_MASK)
    {
    case ENET_PROTOCOL_COMMAND_SEND_FRAGMENT:
    case ENET_PROTOCOL_COMMAND_SEND_RELIABLE:
       enet_peer_dispatch_incoming_reliable_commands (peer, channel);
       break;

    default:
       enet_peer_dispatch_incoming_unreliable_commands (peer, channel);
       break;
    }

    return incomingCommand;

freePacket:
    if (fragmentCount > 0)
      goto notifyError;

    if (packet != NULL && packet -> referenceCount == 0)
      enet_packet_destroy (packet);

    return & dummyCommand;

notifyError:
    if (packet != NULL && packet -> referenceCount == 0)
      enet_packet_destroy (packet);

    return NULL;
}
예제 #3
0
파일: peer.cpp 프로젝트: Kittnz/FoxEmu
void
enet_peer_dispatch_incoming_reliable_commands (ENetPeer * peer, ENetChannel * channel)
{
    ENetListIterator currentCommand;

    for (currentCommand = enet_list_begin (& channel -> incomingReliableCommands);
         currentCommand != enet_list_end (& channel -> incomingReliableCommands);
         currentCommand = enet_list_next (currentCommand))
    {
       ENetIncomingCommand * incomingCommand = (ENetIncomingCommand *) currentCommand;
         
       if (incomingCommand -> fragmentsRemaining > 0 ||
           incomingCommand -> reliableSequenceNumber != (enet_uint16) (channel -> incomingReliableSequenceNumber + 1))
         break;

       channel -> incomingReliableSequenceNumber = incomingCommand -> reliableSequenceNumber;

       if (incomingCommand -> fragmentCount > 0)
         channel -> incomingReliableSequenceNumber += incomingCommand -> fragmentCount - 1;
    } 

    if (currentCommand == enet_list_begin (& channel -> incomingReliableCommands))
      return;

    channel -> incomingUnreliableSequenceNumber = 0;

    enet_list_move (enet_list_end (& peer -> dispatchedCommands), enet_list_begin (& channel -> incomingReliableCommands), enet_list_previous (currentCommand));

    if (! peer -> needsDispatch)
    {
       enet_list_insert (enet_list_end (& peer -> host -> dispatchQueue), & peer -> dispatchList);

       peer -> needsDispatch = 1;
    }

    enet_peer_dispatch_incoming_unreliable_commands (peer, channel);
}
예제 #4
0
파일: peer.cpp 프로젝트: Kittnz/FoxEmu
void
enet_peer_dispatch_incoming_unreliable_commands (ENetPeer * peer, ENetChannel * channel)
{
    ENetListIterator currentCommand;

    for (currentCommand = enet_list_begin (& channel -> incomingUnreliableCommands);
         currentCommand != enet_list_end (& channel -> incomingUnreliableCommands);
         currentCommand = enet_list_next (currentCommand))
    {
       ENetIncomingCommand * incomingCommand = (ENetIncomingCommand *) currentCommand;

       if ((incomingCommand -> command.header.command & ENET_PROTOCOL_COMMAND_MASK) == ENET_PROTOCOL_COMMAND_SEND_UNRELIABLE)
       {
          if (incomingCommand -> reliableSequenceNumber != channel -> incomingReliableSequenceNumber)
            break;

          channel -> incomingUnreliableSequenceNumber = incomingCommand -> unreliableSequenceNumber;
       }
    }

    if (currentCommand == enet_list_begin (& channel -> incomingUnreliableCommands))
      return;

    enet_list_move (enet_list_end (& peer -> dispatchedCommands), enet_list_begin (& channel -> incomingUnreliableCommands), enet_list_previous (currentCommand));

    if (! peer -> needsDispatch)
    {
       enet_list_insert (enet_list_end (& peer -> host -> dispatchQueue), & peer -> dispatchList);

       peer -> needsDispatch = 1;
    }
}
예제 #5
0
파일: peer.c 프로젝트: bsegovia/cube-gles
ENetIncomingCommand *
enet_peer_queue_incoming_command (ENetPeer * peer, const ENetProtocol * command, ENetPacket * packet, enet_uint32 fragmentCount)
{
    ENetChannel * channel = & peer -> channels [command -> header.channelID];
    enet_uint32 unreliableSequenceNumber = 0;
    ENetIncomingCommand * incomingCommand;
    ENetListIterator currentCommand;

    switch (command -> header.command)
    {
    case ENET_PROTOCOL_COMMAND_SEND_FRAGMENT:
    case ENET_PROTOCOL_COMMAND_SEND_RELIABLE:
       for (currentCommand = enet_list_previous (enet_list_end (& channel -> incomingReliableCommands));
            currentCommand != enet_list_end (& channel -> incomingReliableCommands);
            currentCommand = enet_list_previous (currentCommand))
       {
          incomingCommand = (ENetIncomingCommand *) currentCommand;

          if (incomingCommand -> reliableSequenceNumber <= command -> header.reliableSequenceNumber)
          {
             if (incomingCommand -> reliableSequenceNumber < command -> header.reliableSequenceNumber)
               break;

             goto freePacket;
          }
       }
       break;

    case ENET_PROTOCOL_COMMAND_SEND_UNRELIABLE:
       unreliableSequenceNumber = ENET_NET_TO_HOST_32 (command -> sendUnreliable.unreliableSequenceNumber);

       if (command -> header.reliableSequenceNumber < channel -> incomingReliableSequenceNumber)
         goto freePacket;

       if (unreliableSequenceNumber <= channel -> incomingUnreliableSequenceNumber)
         goto freePacket;

       for (currentCommand = enet_list_previous (enet_list_end (& channel -> incomingUnreliableCommands));
            currentCommand != enet_list_end (& channel -> incomingUnreliableCommands);
            currentCommand = enet_list_previous (currentCommand))
       {
          incomingCommand = (ENetIncomingCommand *) currentCommand;

          if (incomingCommand -> unreliableSequenceNumber <= unreliableSequenceNumber)
          {
             if (incomingCommand -> unreliableSequenceNumber < unreliableSequenceNumber)
               break;

             goto freePacket;
          }
       }
       break;

    case ENET_PROTOCOL_COMMAND_SEND_UNSEQUENCED:
       currentCommand = enet_list_end (& channel -> incomingUnreliableCommands);
       break;

    default:
       goto freePacket;
    }

    incomingCommand = (ENetIncomingCommand *) enet_malloc (sizeof (ENetIncomingCommand));

    incomingCommand -> reliableSequenceNumber = command -> header.reliableSequenceNumber;
    incomingCommand -> unreliableSequenceNumber = unreliableSequenceNumber;
    incomingCommand -> command = * command;
    incomingCommand -> fragmentCount = fragmentCount;
    incomingCommand -> fragmentsRemaining = fragmentCount;
    incomingCommand -> packet = packet;
    incomingCommand -> fragments = NULL;

    if (fragmentCount > 0)
    {
       incomingCommand -> fragments = (enet_uint32 *) enet_malloc ((fragmentCount + 31) / 32 * sizeof (enet_uint32));
       memset (incomingCommand -> fragments, 0, (fragmentCount + 31) / 32 * sizeof (enet_uint32));
    }

    if (packet != NULL)
      ++ packet -> referenceCount;

    enet_list_insert (enet_list_next (currentCommand), incomingCommand);

    return incomingCommand;

freePacket:
    if (packet != NULL)
    {
       if (packet -> referenceCount == 0)
         enet_packet_destroy (packet);
    }

    return NULL;
}
예제 #6
0
파일: peer.c 프로젝트: respu/xsilium-engine
void
enet_peer_dispatch_incoming_unreliable_commands (ENetPeer * peer, ENetChannel * channel)
{
    ENetListIterator droppedCommand, startCommand, currentCommand;

    for (droppedCommand = startCommand = currentCommand = enet_list_begin (& channel -> incomingUnreliableCommands);
         currentCommand != enet_list_end (& channel -> incomingUnreliableCommands);
         currentCommand = enet_list_next (currentCommand))
    {
       ENetIncomingCommand * incomingCommand = (ENetIncomingCommand *) currentCommand;

       if ((incomingCommand -> command.header.command & ENET_PROTOCOL_COMMAND_MASK) == ENET_PROTOCOL_COMMAND_SEND_UNSEQUENCED)
         continue;

       if (incomingCommand -> reliableSequenceNumber == channel -> incomingReliableSequenceNumber)
       {
          if (incomingCommand -> fragmentsRemaining <= 0)
          {
             channel -> incomingUnreliableSequenceNumber = incomingCommand -> unreliableSequenceNumber;
             continue;
          }

          if (startCommand != currentCommand)
          {
             enet_list_move (enet_list_end (& peer -> dispatchedCommands), startCommand, enet_list_previous (currentCommand));

             if (! peer -> needsDispatch)
             {
                enet_list_insert (enet_list_end (& peer -> host -> dispatchQueue), & peer -> dispatchList);

                peer -> needsDispatch = 1;
             }

             droppedCommand = currentCommand;
          }
          else
          if (droppedCommand != currentCommand)
            droppedCommand = enet_list_previous (currentCommand);
       }
       else 
       {
          enet_uint16 reliableWindow = incomingCommand -> reliableSequenceNumber / ENET_PEER_RELIABLE_WINDOW_SIZE,
                      currentWindow = channel -> incomingReliableSequenceNumber / ENET_PEER_RELIABLE_WINDOW_SIZE;
          if (incomingCommand -> reliableSequenceNumber < channel -> incomingReliableSequenceNumber)
            reliableWindow += ENET_PEER_RELIABLE_WINDOWS;
          if (reliableWindow >= currentWindow && reliableWindow < currentWindow + ENET_PEER_FREE_RELIABLE_WINDOWS - 1)
            break;

          droppedCommand = enet_list_next (currentCommand);

          if (startCommand != currentCommand)
          {
             enet_list_move (enet_list_end (& peer -> dispatchedCommands), startCommand, enet_list_previous (currentCommand));

             if (! peer -> needsDispatch)
             {
                enet_list_insert (enet_list_end (& peer -> host -> dispatchQueue), & peer -> dispatchList);

                peer -> needsDispatch = 1;
             }
          }
       }
          
       startCommand = enet_list_next (currentCommand);
    }

    if (startCommand != currentCommand)
    {
       enet_list_move (enet_list_end (& peer -> dispatchedCommands), startCommand, enet_list_previous (currentCommand));

       if (! peer -> needsDispatch)
       {
           enet_list_insert (enet_list_end (& peer -> host -> dispatchQueue), & peer -> dispatchList);

           peer -> needsDispatch = 1;
       }

       droppedCommand = currentCommand;
    }

    enet_peer_remove_incoming_commands (& channel -> incomingUnreliableCommands, enet_list_begin (& channel -> incomingUnreliableCommands), droppedCommand);
}
예제 #7
0
파일: protocol.c 프로젝트: wangeek/Egoboo
static void
enet_protocol_handle_send_fragment (ENetHost * host, ENetPeer * peer, const ENetProtocol * command)
{
    enet_uint32 fragmentNumber,
           fragmentCount,
           fragmentOffset,
           fragmentLength,
           startSequenceNumber,
           totalLength;
    ENetChannel * channel;
    ENetListIterator currentCommand;
    ENetIncomingCommand * startCommand;

    if (command -> header.commandLength <= sizeof (ENetProtocolSendFragment) ||
        command -> header.channelID >= peer -> channelCount ||
        peer -> state != ENET_PEER_STATE_CONNECTED)
      return;

    startSequenceNumber = ENET_NET_TO_HOST_32 (command -> sendFragment.startSequenceNumber);
    fragmentNumber = ENET_NET_TO_HOST_32 (command -> sendFragment.fragmentNumber);
    fragmentCount = ENET_NET_TO_HOST_32 (command -> sendFragment.fragmentCount);
    fragmentOffset = ENET_NET_TO_HOST_32 (command -> sendFragment.fragmentOffset);
    totalLength = ENET_NET_TO_HOST_32 (command -> sendFragment.totalLength);
    fragmentLength = command -> header.commandLength - sizeof (ENetProtocolSendFragment);

    if (fragmentOffset >= totalLength ||
        fragmentOffset + fragmentLength > totalLength ||
        fragmentNumber >= fragmentCount)
      return;

    channel = & peer -> channels [command -> header.channelID];

    if (startSequenceNumber <= channel -> incomingReliableSequenceNumber)
      return;

    for (currentCommand = enet_list_previous (enet_list_end (& channel -> incomingReliableCommands));
         currentCommand != enet_list_end (& channel -> incomingReliableCommands);
         currentCommand = enet_list_previous (currentCommand))
    {
       startCommand = (ENetIncomingCommand *) currentCommand;

       if (startCommand -> command.header.command == ENET_PROTOCOL_COMMAND_SEND_FRAGMENT &&
           startCommand -> command.sendFragment.startSequenceNumber == startSequenceNumber)
         break;
    }

    if (currentCommand == enet_list_end (& channel -> incomingReliableCommands))
    {
       ENetProtocol hostCommand = * command;

       hostCommand.sendFragment.startSequenceNumber = startSequenceNumber;
       hostCommand.sendFragment.fragmentNumber = fragmentNumber;
       hostCommand.sendFragment.fragmentCount = fragmentCount;
       hostCommand.sendFragment.fragmentOffset = fragmentOffset;
       hostCommand.sendFragment.totalLength = totalLength;

       startCommand = enet_peer_queue_incoming_command (peer,
                                                        & hostCommand,
                                                        enet_packet_create (NULL, totalLength, ENET_PACKET_FLAG_RELIABLE),
                                                        fragmentCount);
    }
    else
    if (totalLength != startCommand -> packet -> dataLength ||
        fragmentCount != startCommand -> fragmentCount)
      return;

    if ((startCommand -> fragments [fragmentNumber / 32] & (1 << fragmentNumber)) == 0)
      -- startCommand -> fragmentsRemaining;

    startCommand -> fragments [fragmentNumber / 32] |= (1 << fragmentNumber);

    if (fragmentOffset + fragmentLength > startCommand -> packet -> dataLength)
      fragmentLength = startCommand -> packet -> dataLength - fragmentOffset;

    memcpy (startCommand -> packet -> data + fragmentOffset,
            (enet_uint8 *) command + sizeof (ENetProtocolSendFragment),
            fragmentLength);
}