Merged revisions 61477 via svnmerge from

https://origsvn.digium.com/svn/asterisk/branches/1.4

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r61477 | russell | 2007-04-11 11:05:29 -0500 (Wed, 11 Apr 2007) | 13 lines

Merged revisions 61476 via svnmerge from 
https://origsvn.digium.com/svn/asterisk/branches/1.2

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r61476 | russell | 2007-04-11 11:01:25 -0500 (Wed, 11 Apr 2007) | 5 lines

If someone sets the "useragent" option in sip.conf to be empty, then don't add
the User-Agent header at all.  It is an optional header, anyway.  Also, the bug
report says that some of Japan's SIP providers don't allow it for some weird
reason.  (issue #9488, reported by makoto, fixed by me)

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git-svn-id: https://origsvn.digium.com/svn/asterisk/trunk@61478 65c4cc65-6c06-0410-ace0-fbb531ad65f3

channels/chan_sip.c

@@ -6000,7 +6000,8 @@ static int respprep(struct sip_request *resp, struct sip_pvt *p, const char *msg
 	add_header(resp, "To", ot);
 	copy_header(resp, req, "Call-ID");
 	copy_header(resp, req, "CSeq");
-	add_header(resp, "User-Agent", global_useragent);
+	if (!ast_strlen_zero(global_useragent))
+		add_header(resp, "User-Agent", global_useragent);
 	add_header(resp, "Allow", ALLOWED_METHODS);
 	add_header(resp, "Supported", SUPPORTED_EXTENSIONS);
 	if (msg[0] == '2' && (p->method == SIP_SUBSCRIBE || p->method == SIP_REGISTER)) {
@@ -6117,7 +6118,8 @@ static int reqprep(struct sip_request *req, struct sip_pvt *p, int sipmethod, in
 	copy_header(req, orig, "Call-ID");
 	add_header(req, "CSeq", tmp);
-	add_header(req, "User-Agent", global_useragent);
+	if (!ast_strlen_zero(global_useragent))
+		add_header(req, "User-Agent", global_useragent);
 	if (!ast_strlen_zero(p->rpid))
 		add_header(req, "Remote-Party-ID", p->rpid);
@@ -7269,7 +7271,8 @@ static void initreqprep(struct sip_request *req, struct sip_pvt *p, int sipmetho
 	add_header(req, "Contact", p->our_contact);
 	add_header(req, "Call-ID", p->callid);
 	add_header(req, "CSeq", tmp);
-	add_header(req, "User-Agent", global_useragent);
+	if (!ast_strlen_zero(global_useragent))
+		add_header(req, "User-Agent", global_useragent);
 	if (!ast_strlen_zero(p->rpid))
 		add_header(req, "Remote-Party-ID", p->rpid);
 }
@@ -7863,7 +7866,8 @@ static int transmit_register(struct sip_registry *r, int sipmethod, const char *
 	add_header(&req, "To", to);
 	add_header(&req, "Call-ID", p->callid);
 	add_header(&req, "CSeq", tmp);
-	add_header(&req, "User-Agent", global_useragent);
+	if (!ast_strlen_zero(global_useragent))
+		add_header(&req, "User-Agent", global_useragent);
 	
 	if (auth) 	/* Add auth header */