What is “mexHttpBinding”?

Question

What is \"mexHttpBinding\" in WCF? When should this binding be used in preference to other bindings?

Answer 1

mexHTTPBinding allows to use WS-MetadataExchange over HTTP. You don't need it unless you implemented policies which may change over time and you need to discover your service with UDDI for example

Many people says it's needed for creating client side proxies. This is not true. For client side proxies you need to publish WSDL. You can do that by specifying in your service behavior.

Shortly, you don't know it -> you don't need it.