public IEnumerator<ITask> Send(Node node, ReloadMessage reloadMessage) // node is remote peer
{
ReloadConnectionTableEntry connectionTableEntry = null;
List<Byte[]> ByteArrayList = new List<byte[]>();
ByteArrayList.Add(reloadMessage.ToBytes());
//if (ReloadGlobals.FRAGMENTATION == true) {
if (reloadMessage.forwarding_header.length > ReloadGlobals.MAX_PACKET_BUFFER_SIZE * ReloadGlobals.MAX_PACKETS_PER_RECEIVE_LOOP)
{
if (ByteArrayList[0].Length > ReloadGlobals.FRAGMENT_SIZE)
{ //TODO: fragment size should not be fix
ByteArrayList.Clear();
ByteArrayList = reloadMessage.ToBytesFragmented(ReloadGlobals.FRAGMENT_SIZE);
}
}
foreach (byte[] ByteArray in ByteArrayList)
{
/* Try to find a matching connection using node id or target address*/
if (node.Id != null)
{
connectionTableEntry = connectionTable.lookupEntry(node.Id);
if (connectionTableEntry != null)
m_ReloadConfig.Logger(ReloadGlobals.TRACEFLAGS.T_SOCKET, String.Format("FLM: Found open connection for target node id {0}", node.Id));
}
if (connectionTableEntry == null)
{
// connectionTableEntry == null => no connection to remote peer
List<IceCandidate> icecandidates = node.IceCandidates; // remote peer candidates
if (icecandidates != null)
{
foreach (IceCandidate candidate in icecandidates)
{
switch (candidate.addr_port.type)
{
case AddressType.IPv6_Address:
case AddressType.IPv4_Address:
{
ReloadSendParameters send_params;
// check if there is already a attempt to open a connection to this node
//if (connectionQueue.ContainsKey(candidate.addr_port))
if (connectionQueue.ContainsKey(candidate))
{
// here we have a connection attempt
m_ReloadConfig.Logger(ReloadGlobals.TRACEFLAGS.T_WARNING, String.Format("Connection Pending!!!!!!!!!!!!!!!!!!!!!!!!!!!"));
//send_params = connectionQueue[candidate.addr_port];
send_params = connectionQueue[candidate];
yield return Arbiter.Receive(false, send_params.done, x => { });
send_params.done.Post(true); //maybe there are still some other pending connections?
if (send_params.connectionTableEntry != null) //do we have a valid connection?
{
// here we have a valid connection
connectionTableEntry = send_params.connectionTableEntry;
if (send_params.connectionTableEntry.NodeID != null) //TODO: correct?
node.Id = send_params.connectionTableEntry.NodeID;
m_ReloadConfig.Logger(ReloadGlobals.TRACEFLAGS.T_WARNING, String.Format("DONE!!!!!!!!!!!!!!!!!!!!!!!!!!!"));
//connectionQueue.Remove(candidate.addr_port);
connectionQueue.Remove(candidate);
if (node.Id != null)
{
connectionTableEntry = connectionTable.lookupEntry(node.Id);
if (connectionTableEntry != null)
m_ReloadConfig.Logger(ReloadGlobals.TRACEFLAGS.T_SOCKET, String.Format("FLM: Found open connection for target node id {0}", node.Id));
send_params = new ReloadSendParameters()
{
connectionTableEntry = connectionTableEntry,
destinationAddress = null,
port = 0,
buffer = ByteArray,
frame = true,
done = new Port<bool>(),
// markus
connectionSocket = null,
};
yield return Arbiter.ExecuteToCompletion(m_DispatcherQueue, new IterativeTask<Node, ReloadSendParameters>(node, send_params, link.Send)); // SEND
break;
}
}
// here we have no valid connection, but a connection attempt (maybe break?)
//break; // markus
}
// no connection attempt (maybe else here?)
// here is no existing connection and no attempt => try to connect
// NO ICE or ICE but bootstrap
if (ReloadGlobals.UseNoIce || candidate.cand_type == CandType.tcp_bootstrap)
{
connectionTableEntry = connectionTable.lookupEntry(new IPEndPoint(candidate.addr_port.ipaddr, candidate.addr_port.port));
if (connectionTableEntry != null)
m_ReloadConfig.Logger(ReloadGlobals.TRACEFLAGS.T_TRANSPORT, String.Format("FLM: Found open connection for target IP {0}:{1}", candidate.addr_port.ipaddr, candidate.addr_port.port));
else
m_ReloadConfig.Logger(ReloadGlobals.TRACEFLAGS.T_TRANSPORT, String.Format("Opening connection to {0}:{1}", candidate.addr_port.ipaddr, candidate.addr_port.port));
send_params = new ReloadSendParameters()
{
connectionTableEntry = connectionTableEntry,
destinationAddress = candidate.addr_port.ipaddr,
port = candidate.addr_port.port,
buffer = ByteArray,
frame = true,
done = new Port<bool>(),
// markus
connectionSocket = null,
};
//send_params.done.Post(false);
//connectionQueue[candidate.addr_port] = send_params;
connectionQueue[candidate] = send_params;
//m_ReloadConfig.Logger(ReloadGlobals.TRACEFLAGS.T_INFO, String.Format("Insert {0}:{1} into connectionQueue", new IPAddress(send_params.destinationAddress.Address).ToString(), send_params.port));
yield return Arbiter.ExecuteToCompletion(m_DispatcherQueue, new IterativeTask<Node, ReloadSendParameters>(node, send_params, link.Send)); // SEND
//connectionQueue.Remove(candidate.addr_port);
connectionQueue.Remove(candidate);
if (send_params.connectionTableEntry != null)
{
connectionTableEntry = send_params.connectionTableEntry; //TODO: not nice but does the trick
if (send_params.connectionTableEntry.NodeID != null) //TODO: correct?
node.Id = send_params.connectionTableEntry.NodeID;
}
}
// ICE peer
//else
//{
// connectionTableEntry = connectionTable.lookupEntry(new IPEndPoint(candidate.addr_port.ipaddr, candidate.addr_port.port));
// if (connectionTableEntry != null)
// m_ReloadConfig.Logger(ReloadGlobals.TRACEFLAGS.T_TRANSPORT, String.Format("FLM: Found open connection for target IP {0}:{1}", candidate.addr_port.ipaddr, candidate.addr_port.port));
// else
// m_ReloadConfig.Logger(ReloadGlobals.TRACEFLAGS.T_TRANSPORT, String.Format("Opening connection to {0}:{1}", candidate.addr_port.ipaddr, candidate.addr_port.port));
// // try to get connection
// Socket connectionSocket = null;
// m_connectionsToRemotePeer.TryGetValue(candidate.addr_port, out connectionSocket);
// //if (connectionSocket == null)
// // continue; //versuche mit nächsten candidate
// send_params = new ReloadSendParameters()
// {
// connectionTableEntry = connectionTableEntry,
// destinationAddress = candidate.addr_port.ipaddr,
// port = candidate.addr_port.port,
// buffer = ByteArray,
// frame = true,
// done = new Port<bool>(),
// // markus
// connectionSocket = connectionSocket,
// };
// //send_params.done.Post(false);
// connectionQueue[candidate.addr_port] = send_params;
// yield return Arbiter.ExecuteToCompletion(m_DispatcherQueue, new IterativeTask<Node, ReloadSendParameters>(node, send_params, link.Send)); // SEND
// connectionQueue.Remove(candidate.addr_port);
// if (send_params.connectionTableEntry != null)
// {
// connectionTableEntry = send_params.connectionTableEntry; //TODO: not nice but does the trick
// if (send_params.connectionTableEntry.NodeID != null) //TODO: correct?
// node.Id = send_params.connectionTableEntry.NodeID;
// }
//}
}
break;
}
//just support one ice candidate only here
break;
} // foreach ice candidate
}
}
else
{
// connectionTableEntry != null => existing connection to remote peer
ReloadSendParameters send_params = new ReloadSendParameters()
{
connectionTableEntry = connectionTableEntry,
destinationAddress = null,
port = 0,
buffer = ByteArray,
frame = true,
done = new Port<bool>(),
};
yield return Arbiter.ExecuteToCompletion(m_DispatcherQueue, new IterativeTask<Node, ReloadSendParameters>(node, send_params, link.Send)); // SEND
}
} // foreach ByteArray
yield break;
} // Send
public IEnumerator<ITask> Send(Node node, ReloadMessage reloadMessage) {
if (m_ReloadConfig.State < ReloadConfig.RELOAD_State.Exit)
Arbiter.Activate(m_ReloadConfig.DispatcherQueue, new IterativeTask<Node, byte[]>(node, reloadMessage.ToBytes(), link.Send));
yield break;
}