Hi…
1. Via Header Encryption
In 3GPP TS 24.229 v.6.7.0…
In 5.3.3.2 Encryption for topology hiding, it include below contents.
Via: SIP/2.0/UDP icscf1_s.home1.net;lr,
SIP/2.0/UDP Token( SIP/2.0/UDP scscf1.home1.net;lr,
SIP/2.0/UDP pcscf1.home1.net;lr)@home1.net;
tokenized-by=home1.net,
SIP/2.0/UDP [5555::aaa:bbb:ccc:ddd]
But, That syntax(@home1.net) is wrong.
In Via Header sent-by include only alphanum and ‘.’(dot).
And then I think that part((@home1.net) must be ommited.
Via Header syntax is like below format.
Via = ( "Via" / "v" ) HCOLON via-parm *(COMMA via-parm)
via-parm = sent-protocol LWS sent-by *( SEMI via-params )
sent-by = host [ COLON port ]
host = hostname / IPv4address / IPv6reference
hostname = *( domainlabel "." ) toplabel [ "." ]
domainlabel = alphanum
/ alphanum *( alphanum / "-" ) alphanum
toplabel = ALPHA / ALPHA *( alphanum / "-" ) alphanum
If Via Header is encrypted, Is right below form??
SIP/2.0/UDP Token( SIP/2.0/UDP scscf1.home1.net;lr,
SIP/2.0/UDP pcscf1.home1.net;lr)@home1.net;
tokenized-by=home1.net,
Thanks…
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