[Serusers] rtpproxy ip

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[Serusers] help upper registration

RE: [Serusers] ser on linksys...

Giovanni Balasso

17 Jan 2005 17 Jan '05

3:23 p.m.

Hi serusers, after reading lots of docs and mailing lists I still have some doubts about nathelper+rtpproxy and the error message I usually get from it is

rtpproxy: can't bind to the IPv4 port 35000: Cannot assign requested address

what is the correct way to start rtpproxy? do I have to provide nat and public ip?

In the following situation: machine behind nat with private IP, running ser and reachable from the outside via port forwarding on router's public ip (forwarding port 5060 for ser and ports 35000-.... for rtpproxy range, both udp/tcp), can I use rtpproxy? how should i start it? (in the above situation ser registration from the outside works!)

thanks in advance

-- Giovanni Balasso giaso@yahoo.it

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Greger V. Teigre

17 Jan 17 Jan

7:12 p.m.

I think maybe this can help you: http://lists.iptel.org/pipermail/serusers/2004-November/013540.html

At the bottom of the post there is a link to an rtpproxy patch for behind-NAT operation. g-)

Giovanni Balasso wrote:

...

Hi serusers, after reading lots of docs and mailing lists I still have some doubts about nathelper+rtpproxy and the error message I usually get from it is

rtpproxy: can't bind to the IPv4 port 35000: Cannot assign requested address

what is the correct way to start rtpproxy? do I have to provide nat and public ip?

In the following situation: machine behind nat with private IP, running ser and reachable from the outside via port forwarding on router's public ip (forwarding port 5060 for ser and ports 35000-.... for rtpproxy range, both udp/tcp), can I use rtpproxy? how should i start it? (in the above situation ser registration from the outside works!)

thanks in advance

Giovanni Balasso

18 Jan 18 Jan

10:52 a.m.

Alle 20:12, lunedì 17 gennaio 2005, Greger V. Teigre ha scritto:

...

I think maybe this can help you: http://lists.iptel.org/pipermail/serusers/2004-November/013540.html

Thanks a lot Greger, the patch works very fine and solved my problems! For anyone who was not lurking the mailinglist in november the patch is not easy to retrieve as it was posted as attachment and so snipped from the web archives. So I re-post it here in mail text.

-- Giovanni Balasso giaso@yahoo.it patch for cvs rtpproxy adds option -i, launch rtpproxy -l PRIVATEIP -i PUBLICIP to get audio pass thru NAT and routers, provided by Greger T. Teigre *** ../rtpproxy_orig/main.c 2004-08-13 21:04:23.000000000 +0200 --- ./main.c 2004-11-17 18:30:32.000000000 +0100 *************** *** 215,220 **** --- 215,221 ---- static int umode = 0; /* UDP control mode */ static const char *cmd_sock = CMD_SOCK; static const char *pid_file = PID_FILE; + static char *public_ip = NULL; /* * The first address is for external interface, the second one - for *************** *** 916,924 **** } if (lia[0] == NULL || ishostnull(lia[0])) len += sprintf(cp, "%d\n", lport); ! else ! len += sprintf(cp, "%d %s%s\n", lport, addr2char(lia[0]), ! (lia[0]->sa_family == AF_INET) ? "" : " 6"); doreply: if (umode == 0) { write(controlfd, buf, len); --- 917,931 ---- } if (lia[0] == NULL || ishostnull(lia[0])) len += sprintf(cp, "%d\n", lport); ! else { ! if(!public_ip) { ! len += sprintf(cp, "%d %s%s\n", lport, addr2char(lia[0]), ! (lia[0]->sa_family == AF_INET) ? "" : " 6"); ! } else { ! len += sprintf(cp, "%d %s%s\n", lport, public_ip, ! (lia[0]->sa_family == AF_INET) ? "" : " 6"); ! } ! } doreply: if (umode == 0) { write(controlfd, buf, len); *************** *** 999,1009 **** dmode = 0; ! while ((ch = getopt(argc, argv, "vf2Rl:6:s:t:r:p:")) != -1) switch (ch) { case 'f': nodaemon = 1; break; case 'l': bh[0] = optarg; --- 1006,1020 ---- dmode = 0; ! while ((ch = getopt(argc, argv, "vf2Rl:6:s:t:r:p:i:")) != -1) switch (ch) { case 'f': nodaemon = 1; break; + case 'i': + public_ip=(char*) malloc(strlen(optarg)+1); + strcpy(public_ip,optarg); + break; case 'l': bh[0] = optarg; *************** *** 1014,1020 **** bmode = 1; } break; - case '6': bh6[0] = optarg; bh6[1] = strchr(bh6[0], '/'); --- 1025,1030 ----

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Giovanni Balasso
Greger V. Teigre