Allow the client to run the S2C and the C2S tests longer than 10sec.
This will cause the server to close the test sockets.
Log to debug output how much data was sent by the server during the S2C test.
Record C2S test start time right before it starts sending data and end time
right after it stops sending data.
Send data even when there are still bytes available in the out socket.
Record S2C test start time right before it starts receiving data and end time
right after it stops receiving data.
Discard the received data.
Check that the C2S is connected, before tryin to read the number of bytes still
in the socket.