/// <summary>
/// Handle a discovery request
/// </summary>
internal void HandleRequest(IncomingNetMessage message, NetworkEndPoint senderEndpoint)
{
ushort number;
if (!VerifyIdentifiers(message, senderEndpoint, out number))
{
return; // bad app ident or self discovery
}
NetBuffer buf = m_netBase.CreateBuffer(2);
buf.Write(number);
m_netBase.LogWrite("Sending discovery response to " + senderEndpoint + " request " + number);
// send discovery response
m_netBase.SendSingleUnreliableSystemMessage(
NetSystemType.DiscoveryResponse,
buf,
senderEndpoint,
null
);
m_netBase.RecycleBuffer(buf);
}
// TODO: Use this with TRUE isLibraryThread for internal sendings (acks etc)
internal void SendMessage(NetBuffer data, NetChannel channel, NetBuffer receiptData, bool isLibraryThread)
{
if (m_status != NetConnectionStatus.Connected)
{
throw new NetException("Status must be Connected to send messages");
}
if (data.LengthBytes > m_owner.m_config.m_maximumTransmissionUnit)
{
//
// Fragmented message
//
int dataLen = data.LengthBytes;
int chunkSize = m_owner.m_config.m_maximumTransmissionUnit - 10; // header
int numFragments = dataLen / chunkSize;
if (chunkSize * numFragments < dataLen)
{
numFragments++;
}
ushort fragId = m_nextSendFragmentId++;
for (int i = 0; i < numFragments; i++)
{
OutgoingNetMessage fmsg = m_owner.CreateOutgoingMessage();
fmsg.m_type = NetMessageLibraryType.UserFragmented;
fmsg.m_msgType = NetMessageType.Data;
NetBuffer fragBuf = m_owner.CreateBuffer();
fragBuf.Write(fragId);
fragBuf.WriteVariableUInt32((uint)i);
fragBuf.WriteVariableUInt32((uint)numFragments);
if (i < numFragments - 1)
{
// normal fragment
fragBuf.Write(data.Data, i * chunkSize, chunkSize);
}
else
{
// last fragment
int bitsInLast = data.LengthBits - (chunkSize * (numFragments - 1) * 8);
int bytesInLast = dataLen - (chunkSize * (numFragments - 1));
fragBuf.Write(data.Data, i * chunkSize, bytesInLast);
// add receipt only to last message
fmsg.m_receiptData = receiptData;
}
fmsg.m_data = fragBuf;
fmsg.m_data.m_refCount = 1; // since it's just been created
fmsg.m_numSent = 0;
fmsg.m_nextResend = double.MaxValue;
fmsg.m_sequenceChannel = channel;
fmsg.m_sequenceNumber = -1;
if (isLibraryThread)
{
m_unsentMessages.Enqueue(fmsg);
}
else
{
lock (m_lockedUnsentMessages)
m_lockedUnsentMessages.Enqueue(fmsg);
}
}
// TODO: recycle the original, unfragmented data
return;
}
//
// Normal, unfragmented, message
//
OutgoingNetMessage msg = m_owner.CreateOutgoingMessage();
msg.m_msgType = NetMessageType.Data;
msg.m_type = NetMessageLibraryType.User;
msg.m_data = data;
msg.m_data.m_refCount++; // it could have been sent earlier also
msg.m_numSent = 0;
msg.m_nextResend = double.MaxValue;
msg.m_sequenceChannel = channel;
msg.m_sequenceNumber = -1;
msg.m_receiptData = receiptData;
if (isLibraryThread)
{
m_unsentMessages.Enqueue(msg);
}
else
{
lock (m_lockedUnsentMessages)
m_lockedUnsentMessages.Enqueue(msg);
}
}