Hi, I would like to force RTP proxy for calls when UAC is located on the public Internet and the UAS is located behind a NAT system. The nat_uac_test() doesn't help in such situation because the INVITE is issued by endpoint located on the public Internet. In other words, I'm looking for a way to get info about the UAS. If it is located behind NAT than I would force RTP proxy.
Thank you in advance, Leonid Fainshtein
You will make the nat_uac_test() also for REGISTER requests. If the client registers from behind NAT, set a certain flag:
setflag(6)
configure the registrar module to use this flag as NAT flag:
modparam("registrar", "nat_flag", 6)
During save() the value of the nat_flag will also be stored.
If you now have a call to this client, you can test the flag after lookup:
lookup(); if (isflagset(6)) force_rtpproxy; # and all the NAT traversal (replyroute...)
regards klaus
Leonid Fainshtein wrote:
Hi, I would like to force RTP proxy for calls when UAC is located on the public Internet and the UAS is located behind a NAT system. The nat_uac_test() doesn't help in such situation because the INVITE is issued by endpoint located on the public Internet. In other words, I'm looking for a way to get info about the UAS. If it is located behind NAT than I would force RTP proxy.
Thank you in advance, Leonid Fainshtein
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Klaus Darilion -
Leonid Fainshtein