Multiple thread calling a Service function unsafely causes message corruption and terminates with Broken Pipe

If more than one thread attempts to send messages using the same Client instance, one of the threads corrupts another thread's parameter values and terminates program displaying Broken Pipe.

If the Service function is locked with a Mutex, the issue stops occurring.

See the following log fragment, displaying 'Unknown[*]', where '*' is a corrupt value.

<log fragment>

Thrift: Tue Aug 28 13:12:00 2012 TSimpleServer uncaught exception.
virtual void FooHandler::bar(int32_t, zoo::StateType::type, zoo::WeekdayType::type): id: 0, state: Unknown[152587096], weekday: Unknown[152587096]
Thrift: Tue Aug 28 13:12:00 2012 TSocket::write_partial() send() <Host: 127.0.0.1 Port: 9000>Broken pipe
terminate called after throwing an instance of 'std::exception'
what(): std::exception
void FooPeer::bar(int32_t, zoo::StateType::type, zoo::WeekdayType::type): Exception: write() send(): Broken pipe
void FooPeer::bar(int32_t, zoo::StateType::type, zoo::WeekdayType::type): id: 0, state: START, weekday: TUESDAY

</log fragment>

Please, check our sample code at 'BrokenPipeCpp_src.tar.gz' in order to reproduce this error.

Regards,
Felipe