25 Oct
2012
25 Oct
'12
1:10 p.m.
On 25.10.2012 18:57, Juha Heinanen wrote:
admin@sip-router.org writes:
resolve.c: make dns query only on name that has valid syntax
the above was not accurate. it is only checked that name consists of characters that can appear in domain name. i had to add _ char to the valid chars, because it appears in svr names although i have not found an rfc that would have extended the valid character set with _ char.
AFAIK there is no RFC which limits the character set. I think DNS itself would allow any character, but there are limitations on which characters are allowed in hostnames or certain resource records.
regards Klaus