Notifies the remote TP that the local TP wants to enter Send
state.
Description |
 |
The MCReqToSend intrinsic can be called from either Receive state
or Confirm state. It does not cause a state change; it requests
that the remote TP, which is in Send state and therefore controls
the conversation, enter Receive state and place the local TP in
Send state.
After calling MCReqToSend, the local TP must call MCRcvAndWait or MCRcvNoWait to find out whether the remote TP performed the requested
state change. If the state change was successful, the WhatReceived parameter of the MCRcvAndWait or MCRcvNoWait intrinsic will return 4 (SEND). See the descriptions
of MCRcvAndWait and MCRcvNoWait, earlier in this chapter.
