Asias He e7c0db0160 streaming: Fix a race between initiator and follower ...

1) Node A sends prepare message (msg1) to Node A
2) Node B sends prepare message (msg2) back to Node A
3) Node A prepares what to receive according to msg2

The issue is that, Node B might sends before Node A prepares to receive.

To fix, we send a PREPARE_DONE_MESSAGE after step 3 to notify
node B to start sending.

2015-08-17 14:28:11 +08:00

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