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Posted to dev@thrift.apache.org by "James E. King III (JIRA)" <ji...@apache.org> on 2018/09/02 11:02:00 UTC
[jira] [Resolved] (THRIFT-4626) Communication crash when using
binary/compact protocol and zlib transport
[ https://issues.apache.org/jira/browse/THRIFT-4626?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
James E. King III resolved THRIFT-4626.
---------------------------------------
Resolution: Fixed
Assignee: James E. King III
Fix Version/s: 0.12.0
Committed - thanks.
> Communication crash when using binary/compact protocol and zlib transport
> -------------------------------------------------------------------------
>
> Key: THRIFT-4626
> URL: https://issues.apache.org/jira/browse/THRIFT-4626
> Project: Thrift
> Issue Type: Bug
> Components: Go - Library
> Affects Versions: 0.11.0
> Environment: Ubuntu 18.04
> Go 1.10.1
> Reporter: Vyacheslav Kulakov
> Assignee: James E. King III
> Priority: Major
> Fix For: 0.12.0
>
>
> Reading a request on the server side or reading a response on the client side always fail with the "Invalid data length" error when using the binary/compact protocol and the zlib transport, which wraps the framed transport.
> In my project, I use the following code on the server side (only for testing):
> {code:go}
> processor := flume.NewThriftSourceProtocolProcessor(protocol)
> serverTransport, _ := thrift.NewTServerSocketTimeout(address, timeout)
> protocolFactory := thrift.NewTBinaryProtocolFactoryDefault()
> transportFactory := thrift.NewTFramedTransportFactory(thrift.NewTTransportFactory())
> transportFactory = thrift.NewTZlibTransportFactoryWithFactory(level, transportFactory)
> server := thrift.NewTSimpleServer4(
> processor,
> serverTransport,
> transportFactory,
> protocolFactory,
> )
> {code}
> and following code on the client side:
> {code:go}
> factory := thrift.NewTBinaryProtocolFactoryDefault()
> transport := thrift.TTransport(thrift.NewTFramedTransport(socket))
> transport, err = thrift.NewTZlibTransport(transport, compressionLevel)
> if err != nil {
> return err
> }
> err = transport.Open()
> if err != nil {
> return err
> }
> client := flume.NewThriftSourceProtocolClient(
> thrift.NewTStandardClient(
> factory.GetProtocol(transport),
> factory.GetProtocol(transport),
> ),
> )
> {code}
> When I send data from the client to the server I always get the "EOF" error on the client and the "Invalid data length" error on the server. If I use the compact protocol the errors stay at their places.
> I investigated Go library code and found a reason of that errors: the protocol invoke the RemainingBytes method on the zlib transport and it always return zero because all bytes were already read from a frame and were stored in a decompressor buffer. But we can't access to this buffer to obtain correct number of remaining bytes. So this combination of protocols and transports can't work together at all.
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