[Serusers] Are Max-Forwards Mandatory ?

[Jiri Kuthan]

Thanks, a good catch. 

-jiri

At 09:40 PM 6/18/2003, Chintan Thakker wrote:
>Hi,
>Since RFC3262, it seems that Max-Forwards header is mandatory in ACKs sent by the server. [
>
>28.1 Major Functional Changes @ rfc3261]
>
>]Currently the server returns ACKs that do not have it.
>
>Thanks,
>
>Platform: GNU/Linux 2.4.18-14 i686
>Server: Sip EXpress router (0.8.11pre29 (i386/linux))
>
>- Start ACK Message -
>Raw_Data.1=0000: 41 43 4b 20 73 69 70 3a 39 37 32 37 36 31 30 30     
>ACK.sip:97276100
> Raw_Data.2=0010: 30 31 40 31 39 32 2e 31 2e 32 2e 32 32 33 20 53     
>01 at 192.1.2.223.S
> Raw_Data.3=0020: 49 50 2f 32 2e 30 0d 0a 56 69 61 3a 20 53 49 50     
>IP/2.0..Via:.SIP
> Raw_Data.4=0030: 2f 32 2e 30 2f 55 44 50 20 31 39 32 2e 31 2e 32     
>/2.0/UDP.192.1.2
> Raw_Data.5=0040: 2e 31 37 3b 62 72 61 6e 63 68 3d 7a 39 68 47 34     
>.17;branch=z9hG4
> Raw_Data.6=0050: 62 4b 32 65 61 33 2e 61 32 61 65 33 34 32 36 2e     
>bK2ea3.a2ae3426.
> Raw_Data.7=0060: 30 0d 0a 46 72 6f 6d 3a 20 39 37 32 37 36 31 39     
>0..From:.9727619
> Raw_Data.8=0070: 32 37 31 20 3c 73 69 70 3a 39 37 32 37 36 31 39     
>271.<sip:9727619
> Raw_Data.9=0080: 32 37 31 40 31 39 32 2e 31 2e 32 2e 38 38 3e 3b     
>271 at 192.1.2.88>;
> Raw_Data.10=0090: 74 61 67 3d 31 31 33 34 0a 43 61 6c 6c 2d 49 44     
>tag=1134.Call-ID
> Raw_Data.11=00a0: 3a 20 35 39 38 36 33 32 39 34 31 40 31 39 32 2e     
>:.598632941 at 192.
> Raw_Data.12=00b0: 31 2e 32 2e 38 38 0a 54 6f 3a 20 39 37 32 37 36     
>1.2.88.To:.97276
> Raw_Data.13=00c0: 31 30 30 30 31 20 3c 73 69 70 3a 39 37 32 37 36     
>10001.<sip:97276
> Raw_Data.14=00d0: 31 30 30 30 31 40 31 39 32 2e 31 2e 32 2e 31 37     
>10001 at 192.1.2.17
> Raw_Data.15=00e0: 3e 3b 74 61 67 3d 38 32 30 32 0a 43 53 65 71 3a     
>>;tag=8202.CSeq:
> Raw_Data.16=00f0: 20 31 20 41 43 4b 0d 0a 55 73 65 72 2d 41 67 65     
>.1.ACK..User-Age
> Raw_Data.17=0100: 6e 74 3a 20 53 69 70 20 45 58 70 72 65 73 73 20     
>nt:.Sip.EXpress.
> Raw_Data.18=0110: 72 6f 75 74 65 72 28 30 2e 38 2e 31 31 70 72 65     
>router(0.8.11pre
> Raw_Data.19=0120: 32 39 20 28 69 33 38 36 2f 6c 69 6e 75 78 29 29     
>29.(i386/linux))
> Raw_Data.20=0130: 0d 0a 43 6f 6e 74 65 6e 74 2d 4c 65 6e 67 74 68     
>..Content-Length
> Raw_Data.21=0140: 3a 20 30 0d 0a 0d 0a                                                
>
>- End ACK Message -
>
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--
Jiri Kuthan            http://iptel.org/~jiri/