Re: [Kamailio-Users] Loadbalancer/outbound_proxy and ACK problem

13 Mar 2010

Hello Daniel,

that was it. I was calling fix_nated_contact in LB but also in
onreply_route in REG+PROXY.

Thank you very much!

Pavel

On Fri, Mar 12, 2010 at 4:21 PM, Daniel-Constantin Mierla
&lt;miconda(a)gmail.com&gt; wrote:
...
  Hello,

 very likely you use fix natted contact in reg+proxy. You have to use that in
 load balancer, since that is the instance that sees the right public ip
 address for UA. reg+proxy will see IP address of LB as being source IP
 address.

 Cheers,
 Daniel

 On 03/12/2010 12:15 PM, Pavel Miskov wrote:

 Hello Inaki,

 thanks for replying and here is more readable form taken from LB:

 Pavel

 #
 U +0.000000 UAC_A_PUB_IP:31488 ->  LB_IP:5678
 INVITE sip:UAC_B@test.com SIP/2.0.
 Via: SIP/2.0/UDP

 UAC_A_PRIV_IP:31488;branch=z9hG4bK-d8754z-a9127351d94a483a-1---d8754z-;rport.
 Max-Forwards: 70.
 Contact:<sip:UAC_A@UAC_A_PRIV_IP:31488>.
 To: "UAC_B"<sip:UAC_B@test.com>.
 From: "UAC_A"<sip:UAC_A@test.com>;tag=406aba65.
 Call-ID: YjEyNjJhYzczOTIyYWYyMjkwZGZiOTFmMjdkNmNmODk..
 CSeq: 2 INVITE.
 Allow: INVITE, ACK, CANCEL, OPTIONS, BYE, REFER, NOTIFY, MESSAGE,
 SUBSCRIBE, INFO.
 Content-Type: application/sdp.
 Proxy-Authorization: Digest

username="UAC_A",realm="test.com",nonce="4b9a102f000000030feed796808fa4eb1df2de3c9a2b1034",uri="sip:UAC_B@test.com",response="2f023b974dd4cde6f29387681168de8f",algorithm=MD5.
 User-Agent: X-Lite release 1100l stamp 47546.
 Content-Length: 368.

 #
 U +0.004000 LB_IP:5678 ->  UAC_A_PUB_IP:31488
 SIP/2.0 100 Giving a try.
 Via: SIP/2.0/UDP

UAC_A_PRIV_IP:31488;branch=z9hG4bK-d8754z-a9127351d94a483a-1---d8754z-;rport=31488;received=UACs_PUB_IP.
 To: "UAC_B"<sip:UAC_B@test.com>.
 From: "UAC_A"<sip:UAC_A@test.com>;tag=406aba65.
 Call-ID: YjEyNjJhYzczOTIyYWYyMjkwZGZiOTFmMjdkNmNmODk..
 CSeq: 2 INVITE.
 Server: Kamailio (1.5.1-tls (x86_64/linux)).
 Content-Length: 0.
 .

 #
 U +0.000000 LB_IP:5678 ->  REG_PROXY_IP:5166
 INVITE sip:UAC_B@test.com SIP/2.0.
 Record-Route:<sip:LB_IP:5678;lr=on>.
 Via: SIP/2.0/UDP LB_IP:5678;branch=z9hG4bK3ae9.a8d68282.0.
 Via: SIP/2.0/UDP

UAC_A_PRIV_IP:31488;received=UACs_PUB_IP;branch=z9hG4bK-d8754z-a9127351d94a483a-1---d8754z-;rport=31488.
 Max-Forwards: 69.
 Contact:<sip:UAC_A@UAC_A_PUB_IP:31488>.
 To: "UAC_B"<sip:UAC_B@test.com>.
 From: "UAC_A"<sip:UAC_A@test.com>;tag=406aba65.
 Call-ID: YjEyNjJhYzczOTIyYWYyMjkwZGZiOTFmMjdkNmNmODk..
 CSeq: 2 INVITE.
 Allow: INVITE, ACK, CANCEL, OPTIONS, BYE, REFER, NOTIFY, MESSAGE,
 SUBSCRIBE, INFO.
 Content-Type: application/sdp.
 Proxy-Authorization: Digest

username="UAC_A",realm="test.com",nonce="4b9a102f000000030feed796808fa4eb1df2de3c9a2b1034",uri="sip:UAC_B@test.com",response="2f023b974dd4cde6f29387681168de8f",algorithm=MD5.
 User-Agent: X-Lite release 1100l stamp 47546.
 Content-Length: 368.
 Path:<sip:LB_IP:5678;lr>.
 .

 #
 U +0.000000 REG_PROXY_IP:5166 ->  LB_IP:5678
 SIP/2.0 100 Giving a try.
 Via: SIP/2.0/UDP LB_IP:5678;branch=z9hG4bK3ae9.a8d68282.0.
 Via: SIP/2.0/UDP

UAC_A_PRIV_IP:31488;received=UACs_PUB_IP;branch=z9hG4bK-d8754z-a9127351d94a483a-1---d8754z-;rport=31488.
 To: "UAC_B"<sip:UAC_B@test.com>.
 From: "UAC_A"<sip:UAC_A@test.com>;tag=406aba65.
 Call-ID: YjEyNjJhYzczOTIyYWYyMjkwZGZiOTFmMjdkNmNmODk..
 CSeq: 2 INVITE.
 Server: Kamailio (1.5.1-tls (x86_64/linux)).
 Content-Length: 0.
 .

 #
 U +0.000000 REG_PROXY_IP:5166 ->  LB_IP:5678
 INVITE sip:UAC_B@UAC_B_PRIV_IP:31468;rinstance=06b43c2b0e1ae81a SIP/2.0.
 Record-Route:<sip:REG_PROXY_IP:5166;lr=on;nat=yes>.
 Record-Route:<sip:LB_IP:5678;lr=on>.
 Via: SIP/2.0/UDP REG_PROXY_IP:5166;branch=z9hG4bK3ae9.ff046b92.0.
 Via: SIP/2.0/UDP LB_IP:5678;branch=z9hG4bK3ae9.a8d68282.0.
 Via: SIP/2.0/UDP

UAC_A_PRIV_IP:31488;received=UACs_PUB_IP;branch=z9hG4bK-d8754z-a9127351d94a483a-1---d8754z-;rport=31488.
 Route:<sip:LB_IP:5678;lr;received="sip:UAC_B_PUB_IP:31468">.
 Max-Forwards: 68.
 Contact:<sip:UAC_A@UAC_A_PUB_IP:31488>.
 To: "UAC_B"<sip:UAC_B@test.com>.
 From: "UAC_A"<sip:UAC_A@test.com>;tag=406aba65.
 Call-ID: YjEyNjJhYzczOTIyYWYyMjkwZGZiOTFmMjdkNmNmODk..
 CSeq: 2 INVITE.
 Allow: INVITE, ACK, CANCEL, OPTIONS, BYE, REFER, NOTIFY, MESSAGE,
 SUBSCRIBE, INFO.
 Content-Type: application/sdp.
 User-Agent: X-Lite release 1100l stamp 47546.
 Content-Length: 384.
 Path:<sip:LB_IP:5678;lr>.
 .

 #
 U +0.032000 LB_IP:5678 ->  REG_PROXY_IP:5166
 SIP/2.0 100 Giving a try.
 Via: SIP/2.0/UDP

 REG_PROXY_IP:5166;branch=z9hG4bK3ae9.ff046b92.0;rport=5166;received=REG_PROXY_IP.
 Via: SIP/2.0/UDP LB_IP:5678;branch=z9hG4bK3ae9.a8d68282.0.
 Via: SIP/2.0/UDP

UAC_A_PRIV_IP:31488;received=UACs_PUB_IP;branch=z9hG4bK-d8754z-a9127351d94a483a-1---d8754z-;rport=31488.
 To: "UAC_B"<sip:UAC_B@test.com>.
 From: "UAC_A"<sip:UAC_A@test.com>;tag=406aba65.
 Call-ID: YjEyNjJhYzczOTIyYWYyMjkwZGZiOTFmMjdkNmNmODk..
 CSeq: 2 INVITE.
 Server: Kamailio (1.5.1-tls (x86_64/linux)).
 Content-Length: 0.
 .

 #
 U +0.000000 LB_IP:5678 ->  UAC_B_PUB_IP:31468
 INVITE sip:UAC_B@UAC_B_PRIV_IP:31468;rinstance=06b43c2b0e1ae81a SIP/2.0.
 Record-Route:<sip:REG_PROXY_IP:5166;lr=on;nat=yes>.
 Record-Route:<sip:LB_IP:5678;lr=on>.
 Via: SIP/2.0/UDP LB_IP:5678;branch=z9hG4bK3ae9.b8d68282.0.
 Via: SIP/2.0/UDP

 REG_PROXY_IP:5166;rport=5166;received=REG_PROXY_IP;branch=z9hG4bK3ae9.ff046b92.0.
 Via: SIP/2.0/UDP LB_IP:5678;branch=z9hG4bK3ae9.a8d68282.0.
 Via: SIP/2.0/UDP

UAC_A_PRIV_IP:31488;received=UACs_PUB_IP;branch=z9hG4bK-d8754z-a9127351d94a483a-1---d8754z-;rport=31488.
 Max-Forwards: 67.
 Contact:<sip:UAC_A@UAC_A_PUB_IP:31488>.
 To: "UAC_B"<sip:UAC_B@test.com>.
 From: "UAC_A"<sip:UAC_A@test.com>;tag=406aba65.
 Call-ID: YjEyNjJhYzczOTIyYWYyMjkwZGZiOTFmMjdkNmNmODk..
 CSeq: 2 INVITE.
 Allow: INVITE, ACK, CANCEL, OPTIONS, BYE, REFER, NOTIFY, MESSAGE,
 SUBSCRIBE, INFO.
 Content-Type: application/sdp.
 User-Agent: X-Lite release 1100l stamp 47546.
 Content-Length: 384.
 Path:<sip:LB_IP:5678;lr>.
 .

 #
 U +0.104000 UAC_B_PUB_IP:31468 ->  LB_IP:5678
 SIP/2.0 180 Ringing.
 Via: SIP/2.0/UDP LB_IP:5678;branch=z9hG4bK3ae9.b8d68282.0.
 Via: SIP/2.0/UDP

 REG_PROXY_IP:5166;rport=5166;received=REG_PROXY_IP;branch=z9hG4bK3ae9.ff046b92.0.
 Via: SIP/2.0/UDP LB_IP:5678;branch=z9hG4bK3ae9.a8d68282.0.
 Via: SIP/2.0/UDP

UAC_A_PRIV_IP:31488;received=UACs_PUB_IP;branch=z9hG4bK-d8754z-a9127351d94a483a-1---d8754z-;rport=31488.
 Record-Route:<sip:REG_PROXY_IP:5166;lr;nat=yes>.
 Record-Route:<sip:LB_IP:5678;lr=on>.
 Contact:<sip:UAC_B@UAC_B_PRIV_IP:31468;rinstance=06b43c2b0e1ae81a>.
 To: "UAC_B"<sip:UAC_B@test.com>;tag=d6775b48.
 From: "UAC_A"<sip:UAC_A@test.com>;tag=406aba65.
 Call-ID: YjEyNjJhYzczOTIyYWYyMjkwZGZiOTFmMjdkNmNmODk..
 CSeq: 2 INVITE.
 User-Agent: X-Lite release 1100l stamp 47546.
 Content-Length: 0.
 .

 #
 U +0.000000 LB_IP:5678 ->  REG_PROXY_IP:5166
 SIP/2.0 180 Ringing.
 Via: SIP/2.0/UDP

 REG_PROXY_IP:5166;rport=5166;received=REG_PROXY_IP;branch=z9hG4bK3ae9.ff046b92.0.
 Via: SIP/2.0/UDP LB_IP:5678;branch=z9hG4bK3ae9.a8d68282.0.
 Via: SIP/2.0/UDP

UAC_A_PRIV_IP:31488;received=UACs_PUB_IP;branch=z9hG4bK-d8754z-a9127351d94a483a-1---d8754z-;rport=31488.
 Record-Route:<sip:REG_PROXY_IP:5166;lr;nat=yes>.
 Record-Route:<sip:LB_IP:5678;lr=on>.
 Contact:<sip:UAC_B@UAC_B_PRIV_IP:31468;rinstance=06b43c2b0e1ae81a>.
 To: "UAC_B"<sip:UAC_B@test.com>;tag=d6775b48.
 From: "UAC_A"<sip:UAC_A@test.com>;tag=406aba65.
 Call-ID: YjEyNjJhYzczOTIyYWYyMjkwZGZiOTFmMjdkNmNmODk..
 CSeq: 2 INVITE.
 User-Agent: X-Lite release 1100l stamp 47546.
 Content-Length: 0.
 .

 #
 U +0.004000 REG_PROXY_IP:5166 ->  LB_IP:5678
 SIP/2.0 180 Ringing.
 Via: SIP/2.0/UDP LB_IP:5678;branch=z9hG4bK3ae9.a8d68282.0.
 Via: SIP/2.0/UDP

UAC_A_PRIV_IP:31488;received=UACs_PUB_IP;branch=z9hG4bK-d8754z-a9127351d94a483a-1---d8754z-;rport=31488.
 Record-Route:<sip:REG_PROXY_IP:5166;lr;nat=yes>.
 Record-Route:<sip:LB_IP:5678;lr=on>.
 Contact:<sip:UAC_B@LB_IP:5678;rinstance=06b43c2b0e1ae81a>.
 To: "UAC_B"<sip:UAC_B@test.com>;tag=d6775b48.
 From: "UAC_A"<sip:UAC_A@test.com>;tag=406aba65.
 Call-ID: YjEyNjJhYzczOTIyYWYyMjkwZGZiOTFmMjdkNmNmODk..
 CSeq: 2 INVITE.
 User-Agent: X-Lite release 1100l stamp 47546.
 Content-Length: 0.
 .

 #
 U +0.000000 LB_IP:5678 ->  UAC_A_PUB_IP:31488
 SIP/2.0 180 Ringing.
 Via: SIP/2.0/UDP

UAC_A_PRIV_IP:31488;received=UACs_PUB_IP;branch=z9hG4bK-d8754z-a9127351d94a483a-1---d8754z-;rport=31488.
 Record-Route:<sip:REG_PROXY_IP:5166;lr;nat=yes>.
 Record-Route:<sip:LB_IP:5678;lr=on>.
 Contact:<sip:UAC_B@LB_IP:5678;rinstance=06b43c2b0e1ae81a>.
 To: "UAC_B"<sip:UAC_B@test.com>;tag=d6775b48.
 From: "UAC_A"<sip:UAC_A@test.com>;tag=406aba65.
 Call-ID: YjEyNjJhYzczOTIyYWYyMjkwZGZiOTFmMjdkNmNmODk..
 CSeq: 2 INVITE.
 User-Agent: X-Lite release 1100l stamp 47546.
 Content-Length: 0.
 .

 #
 U +0.732000 UAC_B_PUB_IP:31468 ->  LB_IP:5678
 SIP/2.0 200 OK.
 Via: SIP/2.0/UDP LB_IP:5678;branch=z9hG4bK3ae9.b8d68282.0.
 Via: SIP/2.0/UDP

 REG_PROXY_IP:5166;rport=5166;received=REG_PROXY_IP;branch=z9hG4bK3ae9.ff046b92.0.
 Via: SIP/2.0/UDP LB_IP:5678;branch=z9hG4bK3ae9.a8d68282.0.
 Via: SIP/2.0/UDP

UAC_A_PRIV_IP:31488;received=UACs_PUB_IP;branch=z9hG4bK-d8754z-a9127351d94a483a-1---d8754z-;rport=31488.
 Record-Route:<sip:REG_PROXY_IP:5166;lr;nat=yes>.
 Record-Route:<sip:LB_IP:5678;lr=on>.
 Contact:<sip:UAC_B@UAC_B_PRIV_IP:31468;rinstance=06b43c2b0e1ae81a>.
 To: "UAC_B"<sip:UAC_B@test.com>;tag=d6775b48.
 From: "UAC_A"<sip:UAC_A@test.com>;tag=406aba65.
 Call-ID: YjEyNjJhYzczOTIyYWYyMjkwZGZiOTFmMjdkNmNmODk..
 CSeq: 2 INVITE.
 Session-Expires: 95;refresher=uas.
 Min-SE: 90.
 Allow: INVITE, ACK, CANCEL, OPTIONS, BYE, REFER, NOTIFY, MESSAGE,
 SUBSCRIBE, INFO.
 Content-Type: application/sdp.
 Supported: timer.
 User-Agent: X-Lite release 1100l stamp 47546.
 Content-Length: 364.
 .

 #
 U +0.000000 LB_IP:5678 ->  REG_PROXY_IP:5166
 SIP/2.0 200 OK.
 Via: SIP/2.0/UDP

 REG_PROXY_IP:5166;rport=5166;received=REG_PROXY_IP;branch=z9hG4bK3ae9.ff046b92.0.
 Via: SIP/2.0/UDP LB_IP:5678;branch=z9hG4bK3ae9.a8d68282.0.
 Via: SIP/2.0/UDP

UAC_A_PRIV_IP:31488;received=UACs_PUB_IP;branch=z9hG4bK-d8754z-a9127351d94a483a-1---d8754z-;rport=31488.
 Record-Route:<sip:REG_PROXY_IP:5166;lr;nat=yes>.
 Record-Route:<sip:LB_IP:5678;lr=on>.
 Contact:<sip:UAC_B@UAC_B_PRIV_IP:31468;rinstance=06b43c2b0e1ae81a>.
 To: "UAC_B"<sip:UAC_B@test.com>;tag=d6775b48.
 From: "UAC_A"<sip:UAC_A@test.com>;tag=406aba65.
 Call-ID: YjEyNjJhYzczOTIyYWYyMjkwZGZiOTFmMjdkNmNmODk..
 CSeq: 2 INVITE.
 Session-Expires: 95;refresher=uas.
 Min-SE: 90.
 Allow: INVITE, ACK, CANCEL, OPTIONS, BYE, REFER, NOTIFY, MESSAGE,
 SUBSCRIBE, INFO.
 Content-Type: application/sdp.
 Supported: timer.
 User-Agent: X-Lite release 1100l stamp 47546.
 Content-Length: 364.
 .
 #
 U +0.008000 REG_PROXY_IP:5166 ->  LB_IP:5678
 SIP/2.0 200 OK.
 Via: SIP/2.0/UDP LB_IP:5678;branch=z9hG4bK3ae9.a8d68282.0.
 Via: SIP/2.0/UDP

UAC_A_PRIV_IP:31488;received=UACs_PUB_IP;branch=z9hG4bK-d8754z-a9127351d94a483a-1---d8754z-;rport=31488.
 Record-Route:<sip:REG_PROXY_IP:5166;lr;nat=yes>.
 Record-Route:<sip:LB_IP:5678;lr=on>.
 Contact:<sip:UAC_B@LB_IP:5678;rinstance=06b43c2b0e1ae81a>.
 To: "UAC_B"<sip:UAC_B@test.com>;tag=d6775b48.
 From: "UAC_A"<sip:UAC_A@test.com>;tag=406aba65.
 Call-ID: YjEyNjJhYzczOTIyYWYyMjkwZGZiOTFmMjdkNmNmODk..
 CSeq: 2 INVITE.
 Session-Expires: 95;refresher=uas.
 Min-SE: 90.
 Allow: INVITE, ACK, CANCEL, OPTIONS, BYE, REFER, NOTIFY, MESSAGE,
 SUBSCRIBE, INFO.
 Content-Type: application/sdp.
 Supported: timer.
 User-Agent: X-Lite release 1100l stamp 47546.
 Content-Length: 381.
 .

 #
 U +0.000000 LB_IP:5678 ->  UAC_A_PUB_IP:31488
 SIP/2.0 200 OK.
 Via: SIP/2.0/UDP

UAC_A_PRIV_IP:31488;received=UACs_PUB_IP;branch=z9hG4bK-d8754z-a9127351d94a483a-1---d8754z-;rport=31488.
 Record-Route:<sip:REG_PROXY_IP:5166;lr;nat=yes>.
 Record-Route:<sip:LB_IP:5678;lr=on>.
 Contact:<sip:UAC_B@LB_IP:5678;rinstance=06b43c2b0e1ae81a>.
 To: "UAC_B"<sip:UAC_B@test.com>;tag=d6775b48.
 From: "UAC_A"<sip:UAC_A@test.com>;tag=406aba65.
 Call-ID: YjEyNjJhYzczOTIyYWYyMjkwZGZiOTFmMjdkNmNmODk..
 CSeq: 2 INVITE.
 Session-Expires: 95;refresher=uas.
 Min-SE: 90.
 Allow: INVITE, ACK, CANCEL, OPTIONS, BYE, REFER, NOTIFY, MESSAGE,
 SUBSCRIBE, INFO.
 Content-Type: application/sdp.
 Supported: timer.
 User-Agent: X-Lite release 1100l stamp 47546.
 Content-Length: 381.
 .

 #
 U +0.144000 UAC_A_PUB_IP:31488 ->  LB_IP:5678
 ACK sip:UAC_B@LB_IP:5678;rinstance=06b43c2b0e1ae81a SIP/2.0.
 Via: SIP/2.0/UDP

 UAC_A_PRIV_IP:31488;branch=z9hG4bK-d8754z-5f2152497c1dcb39-1---d8754z-;rport.
 Max-Forwards: 70.
 Route:<sip:LB_IP:5678;lr>.
 Route:<sip:REG_PROXY_IP:5166;lr;nat=yes>.
 Contact:<sip:UAC_A@UAC_A_PRIV_IP:31488>.
 To: "UAC_B"<sip:UAC_B@test.com>;tag=d6775b48.
 From: "UAC_A"<sip:UAC_A@test.com>;tag=406aba65.
 Call-ID: YjEyNjJhYzczOTIyYWYyMjkwZGZiOTFmMjdkNmNmODk..
 CSeq: 2 ACK.
 Proxy-Authorization: Digest

username="UAC_A",realm="test.com",nonce="4b9a102f000000030feed796808fa4eb1df2de3c9a2b1034",uri="sip:UAC_B@test.com",response="2f023b974dd4cde6f29387681168de8f",algorithm=MD5.
 User-Agent: X-Lite release 1100l stamp 47546.
 Content-Length: 0.
 .

 #
 U +0.000000 LB_IP:5678 ->  REG_PROXY_IP:5166
 ACK sip:REG_PROXY_IP:5166;lr;nat=yes SIP/2.0.
 Via: SIP/2.0/UDP LB_IP:5678;branch=z9hG4bK3ae9.a8d68282.2.
 Via: SIP/2.0/UDP
 LB_IP:5678;rport=5678;received=LB_IP;branch=z9hG4bK3ae9.a8d68282.2.
 Via: SIP/2.0/UDP

UAC_A_PRIV_IP:31488;received=UACs_PUB_IP;branch=z9hG4bK-d8754z-5f2152497c1dcb39-1---d8754z-;rport=31488.
 Max-Forwards: 68.
 Contact:<sip:UAC_A@UAC_A_PUB_IP:31488>.
 To: "UAC_B"<sip:UAC_B@test.com>;tag=d6775b48.
 From: "UAC_A"<sip:UAC_A@test.com>;tag=406aba65.
 Call-ID: YjEyNjJhYzczOTIyYWYyMjkwZGZiOTFmMjdkNmNmODk..
 CSeq: 2 ACK.
 Proxy-Authorization: Digest

username="UAC_A",realm="test.com",nonce="4b9a102f000000030feed796808fa4eb1df2de3c9a2b1034",uri="sip:UAC_B@test.com",response="2f023b974dd4cde6f29387681168de8f",algorithm=MD5.
 User-Agent: X-Lite release 1100l stamp 47546.
 Content-Length: 0.
 P-hint: rr-enforced.
 P-hint: rr-enforced.
 .

 On Fri, Mar 12, 2010 at 11:04 AM, Iñaki Baz Castillo&lt;ibc(a)aliax.net&gt;
  wrote:

 2010/3/12 Pavel Miskov&lt;miskov.pavel(a)gmail.com&gt;om>:

 Hello list,

 let me first show my scenario:

 UAC_A  --->  LB --->  |
                    | PROXY+REG #1
                    |      or
                    | PROXY+REG #2
 UAC_B<--- LB<--- |

 Could you please repeat the trace but in a easier format:

   ngrep -d eth0 -W byline -T port 5060

 --
 Iñaki Baz Castillo
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Re: [Kamailio-Users] Loadbalancer/outbound_proxy and ACK problem