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<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">I have discovered a bug in the 1.11 RTPProxy Module when using IPv6 addressing.<o:p></o:p></p>
<p class="MsoNormal">When the command to RTPProxy is discovered to contain an IPv6 address in “rtpproxy.c” function:<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">“int force_rtp_proxy_body(struct sip_msg* msg, struct force_rtpp_args *args, pv_spec_p var)”<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">The option “6” is appended to the options being passed to RTP Proxy, however the length component within the I/O vector is not increased.<o:p></o:p></p>
<p class="MsoNormal">Therefore the option is not detected by the RTPProxy process and the IPv6 is not preloaded which can result in an RTP Proxy deadlock.<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">@Line 3725 (rtpproxy.c)<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal"> /* XXX must compare address families in all addresses */<o:p></o:p></p>
<p class="MsoNormal"> if (pf == AF_INET6) {<o:p></o:p></p>
<p class="MsoNormal"> if (append_opts(&opts, '6') == -1) {<o:p></o:p></p>
<p class="MsoNormal"> LM_ERR("out of pkg memory\n");<o:p></o:p></p>
<p class="MsoNormal"> goto error;<o:p></o:p></p>
<p class="MsoNormal"> }<o:p></o:p></p>
<p class="MsoNormal"><span style="font-family:Wingdings">è</span> //DAVES - Accommodate new opts length<o:p></o:p></p>
<p class="MsoNormal"><span style="font-family:Wingdings">è</span> v[1].iov_len++;<o:p></o:p></p>
<p class="MsoNormal"> }<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">I have currently added the above change to my opensips source code in order to work past this problem.<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">Regards.<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">Dave<o:p></o:p></p>
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