add_header(resp, "To", ot);
copy_header(resp, req, "Call-ID");
copy_header(resp, req, "CSeq");
- add_header(resp, "User-Agent", default_useragent);
+ if (!ast_strlen_zero(default_useragent))
+ add_header(resp, "User-Agent", default_useragent);
add_header(resp, "Allow", ALLOWED_METHODS);
if (msg[0] == '2' && (p->method == SIP_SUBSCRIBE || p->method == SIP_REGISTER)) {
/* For registration responses, we also need expiry and
copy_header(req, orig, "Call-ID");
add_header(req, "CSeq", tmp);
- add_header(req, "User-Agent", default_useragent);
+ if (!ast_strlen_zero(default_useragent))
+ add_header(req, "User-Agent", default_useragent);
add_header(req, "Max-Forwards", DEFAULT_MAX_FORWARDS);
if (p->rpid)
add_header(req, "Contact", p->our_contact);
add_header(req, "Call-ID", p->callid);
add_header(req, "CSeq", tmp);
- add_header(req, "User-Agent", default_useragent);
+ if (!ast_strlen_zero(default_useragent))
+ add_header(req, "User-Agent", default_useragent);
add_header(req, "Max-Forwards", DEFAULT_MAX_FORWARDS);
if (p->rpid)
add_header(req, "Remote-Party-ID", p->rpid);
add_header(&req, "To", to);
add_header(&req, "Call-ID", p->callid);
add_header(&req, "CSeq", tmp);
- add_header(&req, "User-Agent", default_useragent);
+ if (!ast_strlen_zero(default_useragent))
+ add_header(&req, "User-Agent", default_useragent);
add_header(&req, "Max-Forwards", DEFAULT_MAX_FORWARDS);