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reject inconsistent final stream offsets

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This commit is contained in:
Marten Seemann 2017-10-25 11:35:35 +07:00
parent 636bf4578c
commit d7a09e7667
2 changed files with 20 additions and 0 deletions
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5
internal/flowcontrol/stream_flow_controller.go
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@ -52,6 +52,11 @@ func (c *streamFlowController) UpdateHighestReceived(byteOffset protocol.ByteCou
c.mutex.Lock()
defer c.mutex.Unlock()
// when receiving a final offset, check that this final offset is consistent with a final offset we might have received earlier
if final && c.receivedFinalOffset && byteOffset != c.highestReceived {
return qerr.Error(qerr.StreamDataAfterTermination, fmt.Sprintf("Received inconsistent final offset for stream %d (old: %d, new: %d bytes)", c.streamID, c.highestReceived, byteOffset))
}
// if we already received a final offset, check that the offset in the STREAM frames is below the final offset
if c.receivedFinalOffset && byteOffset > c.highestReceived {
return qerr.StreamDataAfterTermination
}