I’m interested in one WCF server exposing both HTTP and TCP interfaces. It’ll be used with Silverlight clients, so the thinking is that the HTTP interface will be for secure communications while TCP will be used the rest of the time.
Is it possible for these two interfaces to use the same port in their endpoints, e.g. http://localhost:9000/ and net.tcp://localhost:9000/?
No this is not possible. If you have the TCP port sharing service enabled, you can have multiple services listening on the same TCP port. Windows HTTP listener will also allow you to have multiple services sharing a common port (for example, a console application and IIS can both listen on port 80 at different URL’s). But you can’t use multiple bindings on the same port.
But I don’t really see the advantage of doing that anyway. I would personally leave the HTTP endpoint on port 80 and of course your TCP endpoint is restricted to an upper port range. I’m not sure what scenario you’re trying to enable though.