> I'd like to know the maximum length of FQDN within
> From (or Contact) header field. I found here
> (http://tools.ietf.org/rfc/rfc3319.txt) that it is
> restricted to 255 octets. is this limit valid yet ?
Yes; per RFC 2181, 255 octets is the limit for an FQDN. However, RFC 3261 uses
hostname instead of an FQDN. Is there an RFC which directly or indirectly
limits the size of hostname? For instance, I'm not sure if a .invalid hostname
is restricted to being 255 octets.
host = hostname / IPv4address / IPv6reference
hostname = *( domainlabel "." ) toplabel [ "." ]
domainlabel = alphanum
/ alphanum *( alphanum / "-" ) alphanum
toplabel = ALPHA / ALPHA *( alphanum / "-" ) alphanum
_______________________________________________
Sip-implementors mailing list
[email protected]
https://lists.cs.columbia.edu/cucslists/listinfo/sip-implementors
