1. Implementation CAN Communication EngineBy
Rhee, Hansang
Kwon, Bongsu
10/14/2002

2. Communication Engine : Over View
TCPServer
TCP Listener
Msg RCV
MsgQueue
Register
CommEngine
Send Msg
API

3. Communication Engine TCP Sever : Demon always running Socket Interface
TCP port (4444) Listening
Process
A node try connect -> accept->receive msg ->Queuing Message
Message Queue handling
Socket Interface
Receive message
Send message

4. Class TCP Server Thread Have to wait until accept a connection…
Message Queue
Using HashTable (id = key, msg = value)
Synchronization ( Mutex or Monitor)

5. Class CommEgine public bool SubscribeMsg(byte[] id)
- insert id in the register
public bool UnsubscribeMsg(byte[] id)
- delete id in the register
public byte[] GetMsg(byte[] id)
- register check -> get Msg from Msg Queue -> return Msg
public bool SendMsg(byte[] id, byte[] msg, string ip)
- create a socket -> connect -> send Msg