Dear All, I have a question on forming of MESSAGE-INTEGRITY header for STUN Bind request and STUN Bind Response. ICE username and password are exchanged using SIP offer/answer model.
Offer from ICE Full Client (say Client IFC) ============================================= v=0 o=UE1 970829 970829 IN IP4 10.199.103.2 s=- c=IN IP4 10.199.103.2 b=AS:80 b=TIAS:64000 t=0 0 m=audio 27000 RTP/AVP 0 b=RS:0 b=RR:0 a=rtpmap:0 PCMU/8000 a=ptime:20 a=sendrecv a=ice-pwd:asdfghjklpoiuytrewqasd a=ice-ufrag:8hhy a=candidate:1 1 UDP 2130706431 10.199.103.2 3478 typ host a=candidate:2 1 UDP 1694498815 10.199.103.2 3479 typ srflx raddr 10.199.103.2 rport 3479 a=candidate:3 1 UDP 16777215 10.199.103.2 27000 typ relay raddr 10.199.103.2 rport 27000 Answer from ICE Lite Client (say ILC) ============================ v=0 o=sip 186828262 109337344 IN IP4 10.199.74.52 s=- i=Audio/Fax Session c=IN IP4 10.199.74.52 b=AS:80 b=TIAS:64000 t=0 0 a=ice-lite a=maxprate:50.0 m=audio 22036 RTP/AVP 0 b=AS:80 b=TIAS:64000 a=rtpmap:0 PCMU/8000 a=maxprate:50.0 a=ptime:20 a=sendrecv a=ice-ufrag:/iUD a=ice-pwd:bHsngceY6C9735cwqC6PTe a=candidate:1 1 UDP 2130706431 10.199.74.52 22036 typ host a=candidate:1 2 UDP 2130706430 10.199.74.52 22037 typ host I want to know which password (as we have two password one from client IFC and other from client ILC) will be used for forming of MESSAGE-INTEGRITY header of STUN Bind request and response. Client IFC will be sending STUN bind request and client ILC will be replying with STUN bind response. STUN Bind/Request is as follows =============================== Sent from IP|Port=10.199.103.2|27000 To IP|Port=/10.199.74.52:22036 Sequencer=19 Transport=UDP [STUN BindingRequest messageType[0x00 0x01 ] length=[116] transactionID=[0x21 0x12 0xa4 0x42 0x0d 0x54 0xa9 0x78 0x68 0xd7 0x57 0x9a 0x00 0x00 0x00 0x00 ] and 6 attributes. USERNAME=[0x00 0x06 ] valueLen=[9] value=[/iUD:8hhy] padding=[3] ICE-CONTROLLING=[0x80 0x2a ] valueLen=[8] value=[-119239875] padding=[0] PRIORITY=[0x00 0x24 ] valueLen=[4] value=[2130706431] padding=[0] PASSWORD=[0x00 0x07 ] valueLen=[22] value=[bHsngceY6C9735cwqC6PTe] padding=[2] MESSAGE-INTEGRITY=[0x00 0x08 ] valueLen=[20] value=[0xe0 0xe0 0x54 0x88 0xf4 0x99 0xc8 0xfa 0xef 0x55 0xae 0x92 0xcb 0x49 0xa9 0x63 0xbf 0xde 0xf8 0x20 ] padding=[0] FINGERPRINT=[0x80 0x28 ] valueLen=[4] value=[0x78 0x1e 0x02 0x91 ] padding=[0] ] INFO FSM (STUN1) - State (HostCandidate) sent event (BindingRequest) sequencer=19. INFO >>>>> RX: Length = 64 Received on IP|Port=10.199.103.2|27000 >From IP|Port=10.199.74.52|22036 Sequencer=20 Transport=UDP [STUN BindingResponse messageType[0x01 0x01 ] length=[64] transactionID=[0x21 0x12 0xa4 0x42 0x0d 0x54 0xa9 0x78 0x68 0xd7 0x57 0x9a 0x00 0x00 0x00 0x00 ] and 3 attributes. XOR-MAPPED-ADDRESS=[0x00 0x20 ] valueLen=[8] IPv4 Address [1] address=[/10.199.103.2] port=[27000] value=[0x00 0x01 0x48 0x6a 0x2b 0xd5 0xc3 0x40 ] MESSAGE-INTEGRITY=[0x00 0x08 ] valueLen=[20] value=[0x5b 0x29 0xe9 0x54 0x76 0x04 0x7d 0x56 0x9d 0xb2 0x31 0x95 0x97 0x1e 0xe0 0x3d 0x90 0x48 0x17 0x52 ] padding=[0] FINGERPRINT=[0x80 0x28 ] valueLen=[4] value=[0x58 0x47 0xcf 0xd8 ] padding=[0] ] Thanks & Regards Sachin Rastogi _______________________________________________ Sip-implementors mailing list [email protected] https://lists.cs.columbia.edu/cucslists/listinfo/sip-implementors
