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Posted to dev@thrift.apache.org by "Jens Geyer (Jira)" <ji...@apache.org> on 2022/09/15 21:31:00 UTC
[jira] [Resolved] (THRIFT-5628) MaxMessageSize is never reset on a read buffer
[ https://issues.apache.org/jira/browse/THRIFT-5628?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Jens Geyer resolved THRIFT-5628.
--------------------------------
Fix Version/s: 0.18.0
Assignee: Philip Lee
Resolution: Fixed
> MaxMessageSize is never reset on a read buffer
> ----------------------------------------------
>
> Key: THRIFT-5628
> URL: https://issues.apache.org/jira/browse/THRIFT-5628
> Project: Thrift
> Issue Type: Bug
> Components: netstd - Library
> Affects Versions: 0.16.0
> Reporter: Philip Lee
> Assignee: Philip Lee
> Priority: Major
> Fix For: 0.18.0
>
>
> It appears that for the ReadBuffer of a TMemoryBufferTransport the method CountConsumedMessageBytes() is called, but ResetConsumedMessageSize() is never called.
> Our code as a long lived client which is polling periodically for an extended time. RemainingMessageSize eventually falls to <= 0 and a TTransportException("MaxMessageSize reached") is then thrown.
> Is this a bug or expected?
> I can fix this by changing TMemoryBufferTransport as follows
> {code:java}
> public override ValueTask<int> ReadAsync(byte[] buffer, int offset, int length, CancellationToken cancellationToken)
> {
> var count = Math.Min(Length - Position, length);
> Buffer.BlockCopy(Bytes, Position, buffer, offset, count);
> Position += count;
> CountConsumedMessageBytes(count);
> ---> ResetConsumedMessageSize();
> return new ValueTask<int>(count);
> }{code}
> but not confident this is correct.
> Or as a work around I can set TConfiguration.MaxMessageSize = int.MaxValue which will allow our code to operate for longer (20x) before failing.
> Or I can recreate the client periodically.
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