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wcfnettcpbinding

How does NET.TCP (WCF) protocol work on top of TCP?

I am troubleshooting a performance issue with netTcpBinding in a Self-Hosted WCF service and looking at the packets is not clear whats going on. On a new connections I sometime see an overhead of 200-300 ms in a LAN connection (2 machines connected on the same switch). The TCP 3 way handshake is quick, but the next packet PSH ACK one takes 150+ms. There is no load in the servers, is just this one request.

Is this controled by the nettcpbiding settings, or is it something at the server?

Solution

  • It seems like the overhead is required by the application (although seems high). The problem with the connections closing to quickly, within 2 minutes was due to idleTimeout setting in connectionPoolSettings.

    http://msdn.microsoft.com/en-us/library/ms788984.aspx