I'm creating a network protocol based on Tcp, and i am using berkeley socket via C#.
is the socket buffer gonna mixed up when two threads trying to send data via socket.send method at a time?
should i use lock for accessing one thread at a time?
According to MSDN, the Socket class is thread safe. So, that means you don't need to lock the send method and you can safely send and receive on different threads. But be aware that the order is not guaranteed, so the data won't be mixed if you send it all at a single call to the send method instead of chuncked calls.
In addition to that, I would recommend to lock and flush it just in case you don't want the server swapping the responses across multiple concurrent requests. But that doesn't seems to be this case.