fixes bug 223811 "getaddrinfo returns 3 addrinfo structs for each IP address

[was: very long timeout for retrying IPv6 to IPv4 addresses]" r=wtc

1 files changed, 9 insertions, 0 deletions

diff --git a/pr/src/misc/prnetdb.c b/pr/src/misc/prnetdb.c
index eca157fa..1dca8366 100644
--- a/pr/src/misc/prnetdb.c
+++ b/pr/src/misc/prnetdb.c
@@ -2085,6 +2085,15 @@ PR_IMPLEMENT(PRAddrInfo *) PR_GetAddrInfoByName(const char  *hostname,
         hints.ai_flags = AI_CANONNAME;
         hints.ai_family = AF_UNSPEC;
 
+        /*
+         * it is important to select a socket type in the hints, otherwise we
+         * will get back repetitive entries: one for each socket type.  since
+         * we do not expose ai_socktype through our API, it is okay to do this
+         * here.  the application may still choose to create a socket of some
+         * other type.
+         */
+        hints.ai_socktype = SOCK_STREAM;
+
         rv = GETADDRINFO(hostname, NULL, &hints, &res);
         if (rv == 0)
             return (PRAddrInfo *) res;