Used as an input or output parameter.

   Returns a binding handle for making remote procedure calls to a
   server.

   A client obtains a binding handle by calling one of the following
   routines:

          + rpc_binding_copy()

          + rpc_binding_from_string_binding()

          + rpc_ns_binding_import_next()

          + rpc_ns_binding_select()

   Creating a binding handle establishes a relationship between a
   client and a server.   However, the relationship does not involve
   any communications between the client and server.  The
   communications occur when a client makes a remote procedure call.

   As an input parameter to a remote procedure call, binding specifies
   a binding handle that refers to binding information.  The client's
   RPC runtime uses this binding information to make a remote procedure
   call to a server.  Server manager routines can extract client
   information from a client binding handle by using the following
   routines:

          + rpc_binding_inq_auth_client()

          + rpc_binding_inq_object()

          + rpc_binding_to_string_binding()

          + rpc_string_binding_parse()