Hi:
We're running kamailio 1.5.5 as part of our VoIP infrastructure. One of our
service providers
has an SBC that sends an OPTIONS messages with a Max-Forwards of 0.
Looking at RFC 3261 section 11, this seems to be a valid method of forcing the
proxy to respond to the OPTIONS.
However, the standard initial sanity checks in most proxy configs will reject
this message. I fixed our script
by changing to this:
# initial sanity checks -- messages with
# max_forwards==0, or excessively long requests
if (!mf_process_maxfwd_header("10")) {
if( method != "OPTIONS" ) {
sl_send_reply("483","Too Many Hops");
return;
};
};
if ( msg:len > max_len ) {
sl_send_reply("513", "Message too big");
return;
};
but does anyone have a better solution?
Thanks,
Sean O'Donnell
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