From 8f522048d8f74083cb3a313b865abeef5f339219 Mon Sep 17 00:00:00 2001
From: Alexander Alashkin <alexander.alashkin@cesanta.com>
Date: Fri, 30 Sep 2016 09:43:33 +0300
Subject: [PATCH] Use gethostbyname for localhost
PUBLISHED_FROM=97c58e8624e0d4fa0f043acf6b20e2a1a5ca1b51
---
mongoose.c | 18 +++++++++++++++++-
1 file changed, 17 insertions(+), 1 deletion(-)
diff --git a/mongoose.c b/mongoose.c
index e072b49a9..94b722796 100644
--- a/mongoose.c
+++ b/mongoose.c
@@ -2037,7 +2037,23 @@ MG_INTERNAL int mg_parse_address(const char *str, union socket_address *sa,
sscanf(str, "%[^ :]:%u%n", host, &port, &len) == 2) {
sa->sin.sin_port = htons((uint16_t) port);
if (mg_resolve_from_hosts_file(host, sa) != 0) {
- return 0;
+ /*
+ * if resolving from hosts file failed and the host
+ * we are trying to resolve is `localhost` - we should
+ * try to resolve it using `gethostbyname` and do not try
+ * to resolve it via DNS server if gethostbyname has failed too
+ */
+ if (mg_ncasecmp(host, "localhost", 9) != 0) {
+ return 0;
+ }
+
+#ifndef MG_DISABLE_SYNC_RESOLVER
+ if (!mg_resolve2(host, &sa->sin.sin_addr)) {
+ return -1;
+ }
+#else
+ return -1;
+#endif
}
#endif
} else if (sscanf(str, ":%u%n", &port, &len) == 1 ||
--
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