When creating a custom transport channel, you must be sure to remove the encoding binding element from the binding context before returning from your BuildChannelFactory and BuildChannelListener calls. The best place to do this is within the constructor...

In the version of WCF that shipped with .Net Framework 3.0 we didn't support custom validators with transport level HTTP security. We received much feedback from the community that this was a highly desired feature, so I'm happy to say we added support...