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Agent 1. Agent 3. Agent n-1. transfer channel. Agent 2. Agent 4. Agent n. set up connection (ENBCP). agent A. transfer long length content (LMSP). agent B. terminate connection (ENBCP). ?SendReq. !SendReq. Idle. Recving. !SendEndRes. ?SendEndReq. !SendReq. BeforeSend.
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Agent1 Agent3 Agentn-1 transfer channel Agent2 Agent4 Agentn
set up connection (ENBCP) agent A transfer long length content (LMSP) agent B terminate connection (ENBCP)
?SendReq !SendReq Idle Recving !SendEndRes ?SendEndReq !SendReq BeforeSend ?SendReq Idle Sending ?SendEndRes !SendEndReq BeforeSendEnd
Sending u1 BeforeSend Idle SendRes Recving u2 SendReq Idle t0 t1 t2 t
Sending BeforeSendEnd BeforeSend SendEndReq Idle SendEndRes Idle SendRes agent1 Recving SendReq Idle Idle agent2
4 bits 396 bits message type rest
Sending u1 BeforeSend Idle Recving Recving SendRes u3 SendReq Idle Idle SendRes Sending u2 SendReq BeforeSend Idle t1 t2 t
!SendRes ?SendReq BeforeSend !SendReq ?SendRes Recving Idle Idle Sending ?SendEndRes !SendEndReq ?SendEndReq !SendEndRes BeforeSendEnd