PR_PROTOCOL_NOT_SUPPORTED_ERROR  503 net/third_party/nss/ssl/unix_err.c     case EPROTONOSUPPORT: prError = PR_PROTOCOL_NOT_SUPPORTED_ERROR; break;
PR_PROTOCOL_NOT_SUPPORTED_ERROR  333 net/third_party/nss/ssl/win32err.c     case WSAEPROTONOSUPPORT: 	prError = PR_PROTOCOL_NOT_SUPPORTED_ERROR; break;