Hi,
I've experienced some puzzling behavior with the is_present_hf function of the
sipmsgops module, version 1.11. When checking for the presence of a custom
header the function sometimes returns true and sometimes false for the same
header in the same INVITE message.
Here is the relevant code (debug xlog statements added, production code is
sparser):
case 3:
xlog("L_INFO","TRACE[$ci]:route[conditions]:condition has header existence
operator(3) where header $var(field) should exist");
if (is_present_hf("$var(field)") || $hdr($var(field)) != NULL) {
xlog("L_DEBUG","TRACE[$ci]:route[conditions]:we've got a
$var(field) header with value $hdr($var(field))");
if (is_present_hf("$var(field)")) {
xlog("L_INFO","TRACE[$ci]:route[conditions]:111111111111111111111111111111111111111111111111we've
got a $var(field) header with value $hdr($var(field))");
}
else {
xlog("L_INFO","TRACE[$ci]:route[conditions]:111111111111111111111111111111111111111111111111header
$var(field) not found");
}
}
else {
xlog("L_DEBUG","TRACE[$ci]:route[conditions]:header $var(field) not
found");
$var(conditions_failed) = $var(conditions_failed) + 1;
}
if (is_present_hf("$var(field)")) {
xlog("L_INFO","TRACE[$ci]:route[conditions]:222222222222222222222222222222222222222222222222we've
got a $var(field) header with value $hdr($var(field))");
}
else {
xlog("L_INFO","TRACE[$ci]:route[conditions]:222222222222222222222222222222222222222222222222header
$var(field) not found");
}
break;
which produces the following log:
Mar 13 16:40:48 sipdr400 /usr/local/sbin/opensips[22721]:
TRACE[[email protected]]:route[conditions]:condition
has header existence operator(3) where header x-livevox-correlation-id should
exist
Mar 13 16:40:48 sipdr400 /usr/local/sbin/opensips[22721]:
INFO:sipmsgops:parse_pvs_header: using hdr type name <x-livevox-correlation-id>
Mar 13 16:40:48 sipdr400 /usr/local/sbin/opensips[22721]:
TRACE[[email protected]]:route[conditions]:111111111111111111111111111111111111111111111111we've
got a x-livevox-correlation-id header with value xlvcorid
Mar 13 16:40:48 sipdr400 /usr/local/sbin/opensips[22721]:
TRACE[[email protected]]:route[conditions]:222222222222222222222222222222222222222222222222header
x-livevox-correlation-id not found
when handling this message:
From:
<sip:[email protected]:5060>;tag=2aaaf56b2208-0-13c4-6009-b6e9b3-2dc5137e-b6e9b3
To: <sip:[email protected]>
Call-ID: [email protected]
CSeq: 1 INVITE
Via: SIP/2.0/UDP
XXX.XXX.XXX.XXX:5060;rport;branch=z9hG4bK-b6e9b3-ca80e5c0-3b30eff8-2aaaf4694408
x-accountid: 2
x-appid: 24601
x-joinsid: f652ceb9f649ceb50a1d44d2507891cc
x-livevox-correlation-id: xlvcorid
x-sid: 6ae1bd9e681f8da0c51809a87c345c86
x-vdirect: true
Max-Forwards: 69
User-Agent: VCS11.6.67950.0
Contact: <sip:[email protected]:5060>
Content-Type: application/sdp
Content-Length: 229
v=0
o=- 1 1 IN IP4 XXX.XXX.XXX.XXX
s=XXX.XXX.XXX.XXX
c=IN IP4 XXX.XXX.XXX.XXX
t=0 0
m=audio 12334 RTP/AVP 101 0 8
a=rtpmap:101 telephone-event/8000
a=fmtp:101 0-15
a=rtpmap:0 PCMU/8000
a=rtpmap:8 PCMA/8000
a=ptime:20
This looks like a bug to me, or am I missing something? Anyone has an idea how
this behavior is possible?
thanks,
Eric Werkhoven
dev-voip, livevox.com?
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