WCF receive timeout

Question

When attempting to connect/communicate with my service i have to wait for almost exactly 20 seconds each time before the exception is fired. Since this all gonna be running on a local network, I would like decrease that timeout period to 5 seconds? I tried decreasing the receiveTimeout on my client, but it didn't work. I looked all over my code for a 20 second timeout variable set, but couldn't find any. What should i be changing?

Answer 1

There are differen timeout settings http://msdn.microsoft.com/en-us/library/ms731078.aspx. They can be set for example in a config file (web.config or app.config) see http://msdn.microsoft.com/en-us/library/ms731343.aspx as an example. Under http://msdn.microsoft.com/en-us/library/ms731399.aspx you can choose the binding which you use and set the corresponding setting.

UPDATED: Probably you have timeout on the TCP level. Try reduce TcpMaxConnectRetransmissions (Default value 2) or TcpInitialRTT (Default value 3, on NT 4.0 the parameter has the name InitialRTT) parameters in the registry, reboot computer and try your experiments one more time. About affect of 21 seconds you can read in http://support.microsoft.com/kb/223450, http://support.microsoft.com/kb/175523, http://support.microsoft.com/kb/170359 or http://www.boyce.us/windows/tipcontent.asp?ID=189. Description of default values of TCP/IP configuration you can read for example in http://support.microsoft.com/kb/314053 (for Windows XP) and http://technet.microsoft.com/en-us/library/cc739819(WS.10).aspx (for Windows Server 2003 with SP2)