fix via comparison to not be case sensitive (bug #4496)

git-svn-id: https://origsvn.digium.com/svn/asterisk/branches/v1-0@5954 65c4cc65-6c06-0410-ace0-fbb531ad65f3

diff --git a/channels/chan_sip.c b/channels/chan_sip.c
index 8a1c3453a9a1e06c28504d27251dc17366d2d7d1..b746d630955ff4285f41adfcd706443af7d61da0 100755 (executable)
--- a/channels/chan_sip.c
+++ b/channels/chan_sip.c
@@ -5270,7 +5270,7 @@ static int check_via(struct sip_pvt *p, struct sip_request *req)
                c++;
                while(*c && (*c < 33))
                        c++;
-               if (strcmp(via, "SIP/2.0/UDP")) {
+               if (strcasecmp(via, "SIP/2.0/UDP")) {
                        ast_log(LOG_WARNING, "Don't know how to respond via '%s'\n", via);
                        return -1;
                }