Async WCF

This is a demonstration of how to build an asynchronous WCF service. Please read this post for background: http://mikehadlow.blogspot.com/2011/03/7000-concurrent-connections-with.html

How to use it:

1. Build the solution
2. Start Mike.AsyncWcf.Server <- a simple timer service
3. Start Mike.AsyncWcf.Proxy <- a simple proxy that passes calls onto the timer service

Mike.AsyncWcf.Server is a simple async WCF service that simply waits 10 seconds before returning. To try this out open this test class:

Mike.AsyncWcf.Client.Tests.RunRawHttpClient

change this line of code so that it calls your instance of Mike.AsyncWcf.Server: private static readonly Uri serviceUri = new Uri("http://:8123/hello");

... and run the 'Run' test method with your favorite test running (TestDriven.NET FTW :)

You should see output something like this:

Starting test... Completed: 0 Faulted: 0 In Progress: 763 Completed: 0 Faulted: 0 In Progress: 1713

...

Completed: 19,532 Faulted: 0 In Progress: 468 Completed: 19,976 Faulted: 0 In Progress: 24 Completed All 20,000 Faulted 0 Elapsed ms 39,661 Max concurrency 7,097 Calls per second 504 Avergate call duration ms 10,092

To try out the proxy:

in Mike.AsyncWcf.Client.Tests.RunRawHttpClient change this line of code so that it calls your instance of Mike.AsyncWcf.Proxy: private static readonly Uri serviceUri = new Uri("http://:8123/proxy");

in Mike.AsyncWcf.Proxy.CustomerProxyService change this line of code so that it calls your instance of Mike.AsyncWcf.Server private readonly Uri serviceUri = new Uri("http://:8123/hello");

Execute the test method as before. Play with these two constants to see how far you can push it: private const int iterations = 20000; <- start low and work upwards private const int intervalMilliseconds = 1; <- start with a high value (100) and work downwards