50b20413d3
* Unlock RPC client while actually receiving a message As receiving a message might block for a long time, unblocking the client allows to let it send messages in the meanwhile without using 'tricks' * Unlock RPC server while actually receiving a message As receiving a message might block for a long time, unblocking the client allows to let it send messages in the meanwhile without using 'tricks' * Protect Close() against race conditions * Concurrency and Sequence tests