private void OnBackendMessageReceived(IRemote conn, Message msg)
{
Console.WriteLine("OnBackendMessageReceived id:{0} ip:{1} port:{2}", conn.Id, conn.RemoteIp, conn.RemotePort);
Console.WriteLine("OnBackendMessageReceived msgLen:{0}", msg.Buffer.Length);
// forward backend msg to frontend,
// which is based on forwardId associated with the msg
var stream = new MemoryStream(msg.Buffer);
var br = new BinaryReader(stream);
var msgType = (GateMessage)br.ReadByte();
Console.WriteLine("OnBackendMessageReceived msgType:{0}", msgType);
switch (msgType)
{
#region Broker Component
case GateMessage.Subscribe:
{
var key = br.ReadInt32();
var uuid = new Guid(br.ReadBytes(UuidLen));
Console.WriteLine("OnBackendMessageReceived key:{0} uuid:{1}", key, uuid);
broker.AddRouting(key, uuid, conn);
}
break;
case GateMessage.Unicast:
{
var uuid = new Guid(br.ReadBytes(UuidLen));
Console.WriteLine("OnBackendMessageReceived uuid:{0}", uuid);
// uuid to client IRemote
IRemote remote = null;
if (!uuidToClients.TryGetValue(uuid, out remote))
{
return;
}
PushReceivedMessage(remote, msg.Buffer, msg.Buffer.Length - UuidLen - 1, UuidLen + 1);
}
break;
#endregion
#region Forward Component
case GateMessage.AddForward:
case GateMessage.RemoveForward:
{
var uuid = new Guid(br.ReadBytes(UuidLen));
var forwardId = br.ReadInt32();
Console.WriteLine("OnBackendMessageReceived uuid:{0} forwardId:{1}", uuid, forwardId);
// todo
// what if backend control forward first,
// then client handshake?
switch (msgType)
{
case GateMessage.AddForward:
forwardManager.AddForward(uuid, forwardId);
break;
case GateMessage.RemoveForward:
forwardManager.RemoveForward(uuid, forwardId);
break;
}
}
break;
case GateMessage.Multicast:
{
var forwardId = br.ReadInt32();
Console.WriteLine("OnBackendMessageReceived forwardId:{0}", forwardId);
// forwardId to client IRemotes
foreach (var uuid in forwardManager.GetForwardGroup(forwardId))
{
IRemote remote = null;
if (uuidToClients.TryGetValue(uuid, out remote))
{
PushReceivedMessage(remote, msg.Buffer, msg.Buffer.Length - 4 - 1, 4 + 1);
}
}
}
break;
#endregion
}
}
