Is a client proxy thread-safe?
The thread safety of a proxy is essentially the same as that of the underlying System.Net.WebRequest object: “Any public static (Shared in Visual Basic) members of this type are thread safe. Any instance members are not guaranteed to be thread safe.” If you need to make concurrent calls, use a separate proxy for each call. Note that it is ok to make multiple calls to XmlRpcProxyGen.Create for the same type because the dynamically generated proxy class is cached and reused in following calls to Create.