message: Return something other then "fixme" in unix socket HTTP support
  This function is never called, but return something less sloppy
diff: @@ -58,7 +58,7 @@ public:
  }
  std::string get_remote_endpoint(lib::error_code & ec) const {
  - return "fixme";
  + return "UNIX Socket Endpoint";
  }
  void pre_init(init_handler callback) {
  