ensure that IAX2 and SIP sockets allow UDP fragmentation when running on Linux (thanks to Brian Candler on the asterisk-dev list for the tip)

git-svn-id: http://svn.digium.com/svn/asterisk/branches/1.2@44955 f38db490-d61c-443f-a65b-d21fe96a405b

1 files changed, 11 insertions, 0 deletions

diff --git a/utils.c b/utils.c
index 2e99ad17d..8f3dbcd7b 100644
--- a/utils.c
+++ b/utils.c
@@ -895,3 +895,14 @@ char *ast_process_quotes_and_slashes(char *start, char find, char replace_with)
 		*dataPut = 0;
 	return dataPut;
 }
+
+void ast_enable_packet_fragmentation(int sock)
+{
+#ifdef __linux__
+	int val = IP_PMTUDISC_DONT;
+	
+	if (setsockopt(sock, IPPROTO_IP, IP_MTU_DISCOVER, &val, sizeof(val)))
+		ast_log(LOG_WARNING, "Unable to disable PMTU discovery. Large UDP packets may fail to be delivered when sent from this socket.\n");
+#endif
+}
+