Make url.el use async DNS

* lisp/url/url-gw.el (url-open-stream): Use non-blocking DNS.

* src/process.c (syms_of_process): Add a `dns' subfeature for
make-network-process.

1 files changed, 3 insertions, 0 deletions

diff --git a/src/process.c b/src/process.c
index 86ca3f339ac..9653eba1e28 100644
--- a/src/process.c
+++ b/src/process.c
@@ -7921,6 +7921,9 @@ The variable takes effect when `start-process' is called.  */);
 
 #ifdef NON_BLOCKING_CONNECT
    ADD_SUBFEATURE (QCnowait, Qt);
+#ifdef HAVE_GETADDRINFO_A
+   ADD_SUBFEATURE (QCnowait, Qdns);
+#endif
 #endif
 #ifdef DATAGRAM_SOCKETS
    ADD_SUBFEATURE (QCtype, Qdatagram);