<div dir="ltr">Yup. The default configuaration already have the nathelper.so loaded. Plus, there are other places in the config where nat_uac_test was called but never error out.</div><br><div class="gmail_quote"><div dir="ltr">On Thu, Jan 3, 2019 at 5:39 PM Sergey Okhapkin <<a href="mailto:sos@sokhapkin.dyndns.org">sos@sokhapkin.dyndns.org</a>> wrote:<br></div><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex"><u></u>
<div style="font-family:"Noto Sans";font-size:10pt;font-weight:400;font-style:normal">
<p style="margin:0px;text-indent:0px">Did you load the module?<br><br>On Thursday, January 3, 2019 5:27:12 PM EST Andrew Chen wrote:<br></p>
<p style="margin:12px 40px 0px;text-indent:0px">Hey it's me again.</p>
<p style="margin:0px 40px;text-indent:0px"><br></p>
<p style="margin:0px 40px;text-indent:0px">So I'm following the instructions in the Kamailio 5.1.x wiki module page for websocket configuration and it specifically mention to set this block:</p>
<p style="margin:0px 40px;text-indent:0px"><br></p>
<p style="margin:0px 40px;text-indent:0px">onreply_route[WS_REPLY] {</p>
<p style="margin:0px 40px;text-indent:0px"> xlog("L_INFO", "[CSeq $cs] Is in WS_REPLY.");</p>
<p style="margin:0px 40px;text-indent:0px"> xlog("L_INFO", "[CSeq $cs] Sending $rs $rr to $sel(via[2].host) via $sel(via[2].transport) len: $ml");</p>
<p style="margin:0px 40px;text-indent:0px"> xlog("L_INFO", "[CSeq $cs] \n$mb \n");</p>
<p style="margin:0px 40px;text-indent:0px"><br></p>
<p style="margin:0px 40px;text-indent:0px"> if(nat_uac_test("64")) {</p>
<p style="margin:0px 40px;text-indent:0px"> # Do NAT traversal stuff for replies to a WebSocket connection</p>
<p style="margin:0px 40px;text-indent:0px"> # - even if it is not behind a NAT!</p>
<p style="margin:0px 40px;text-indent:0px"> # This won't be needed in the future if Kamailio and the</p>
<p style="margin:0px 40px;text-indent:0px"> # WebSocket client support Outbound and Path.</p>
<p style="margin:0px 40px;text-indent:0px"> add_contact_alias();</p>
<p style="margin:0px 40px;text-indent:0px"> }</p>
<p style="margin:0px 40px;text-indent:0px">}</p>
<p style="margin:0px 40px;text-indent:0px"><br></p>
<p style="margin:0px 40px;text-indent:0px">When I did this and started up Kamailio, it gave me an error:</p>
<p style="margin:0px 40px;text-indent:0px"><br></p>
<p style="margin:0px 40px;text-indent:0px">Jan 3 22:19:43 sjomainkama55 kamailio: ERROR: <core> [core/cfg.y:3309]: yyparse(): cfg. parser: failed to find command nat_uac_test (params 1)</p>
<p style="margin:0px 40px;text-indent:0px"><br></p>
<p style="margin:0px 40px;text-indent:0px">I moved that if statement to a route block and I was able to start it up.</p>
<p style="margin:0px 40px;text-indent:0px"><br></p>
<p style="margin:0px 40px;text-indent:0px">The wiki page for nathelper module specify this function can be run in onreply_route as well:</p>
<p style="margin:0px 40px;text-indent:0px"><br></p>
<p style="margin:0px 40px;text-indent:0px"><br></p>
<p style="margin:24px 40px 18px;text-indent:0px;line-height:28px"><span style="font-family:"Scada,Helvetica,sans-serif";font-size:large;font-weight:600;font-style:italic;color:rgb(107,83,68)">5.5. </span><span style="font-family:Hack;font-size:large;font-weight:600;font-style:italic;color:rgb(107,83,68)">nat_uac_test(flags)</span></p>
<p style="margin:12px 40px;text-indent:0px"><span style="font-family:"Helvetica,Arial,sans-serif";font-size:15px;color:rgb(0,0,0)">Tries to guess if client's request originated behind a nat. The parameter determines what heuristics is used.</span></p>
<p style="margin:12px 40px;text-indent:0px"><span style="font-family:"Helvetica,Arial,sans-serif";font-size:15px;color:rgb(0,0,0)">Meaning of the flags is as follows:</span></p>
<ul style="margin-top:0px;margin-bottom:0px;margin-right:0px"><li style="font-family:"Helvetica,Arial,sans-serif";font-size:15px;color:rgb(0,0,0)"><span style="font-size:15px;font-style:italic">1</span><span style="font-size:15px"> - The “Contact” header field is searched for occurrence of RFC1918 or RFC6598 addresses.</span></li>
<li style="font-family:"Helvetica,Arial,sans-serif";font-size:15px;color:rgb(0,0,0)"><span style="font-size:15px;font-style:italic">2</span><span style="font-size:15px"> - the "received" test is used: address in the “Via” header is compared against source IP address of signaling</span></li>
<li style="font-family:"Helvetica,Arial,sans-serif";font-size:15px;color:rgb(0,0,0)"><span style="font-size:15px;font-style:italic">4</span><span style="font-size:15px"> - The Top Most “Via” is searched for occurrence of RFC1918 or RFC6598 addresses</span></li>
<li style="font-family:"Helvetica,Arial,sans-serif";font-size:15px;color:rgb(0,0,0)"><span style="font-size:15px;font-style:italic">8</span><span style="font-size:15px"> - The SDP is searched for occurrence of RFC1918 or RFC6598 addresses</span></li>
<li style="font-family:"Helvetica,Arial,sans-serif";font-size:15px;color:rgb(0,0,0)"><span style="font-size:15px;font-style:italic">16</span><span style="font-size:15px"> - Test if the source port is different from the port in the “Via” header</span></li>
<li style="font-family:"Helvetica,Arial,sans-serif";font-size:15px;color:rgb(0,0,0)"><span style="font-size:15px;font-style:italic">32</span><span style="font-size:15px"> - Test if the source IP address of signaling is a RFC1918 or RFC6598 address</span></li>
<li style="font-family:"Helvetica,Arial,sans-serif";font-size:15px;color:rgb(0,0,0)"><span style="font-size:15px;font-style:italic">64</span><span style="font-size:15px"> - Test if the source connection of signaling is a WebSocket</span></li>
<li style="font-family:"Helvetica,Arial,sans-serif";font-size:15px;color:rgb(0,0,0)"><span style="font-size:15px;font-style:italic">128</span><span style="font-size:15px"> - Test if the “Contact” header URI port differs from the source port of the request (Warning: this is might be legal or even intended combination in non NATted scenarios)</span></li></ul>
<p style="margin:12px 40px;text-indent:0px"><span style="font-family:"Helvetica,Arial,sans-serif";font-size:15px;color:rgb(0,0,0)">All flags can be bitwise combined, the test returns true if any of the tests identified a NAT.</span></p>
<p style="margin:12px 40px;text-indent:0px"><span style="font-family:"Helvetica,Arial,sans-serif";font-size:15px;color:rgb(0,0,0)">This function can be used from REQUEST_ROUTE, ONREPLY_ROUTE, FAILURE_ROUTE, BRANCH_ROUTE.</span></p>
<p style="margin:12px 40px;text-indent:0px"><span style="font-family:"Helvetica,Arial,sans-serif";font-size:15px;color:rgb(0,0,0)"><br></span></p>
<p style="margin:12px 40px;text-indent:0px"><span style="font-family:"Helvetica,Arial,sans-serif";font-size:15px;color:rgb(0,0,0)">is this some known bug in 5.1.x?</span></p>
<p style="margin:12px 40px;text-indent:0px"><span style="font-family:"Helvetica,Arial,sans-serif";font-size:15px;color:rgb(0,0,0)">Thanks</span></p>
<p style="margin:0px 40px;text-indent:0px"><br>-- <br></p>
<p style="margin:0px 40px;text-indent:0px">Andy Chen</p>
<p style="margin:0px 40px;text-indent:0px"><a href="mailto:achen@thinkingphones.com" target="_blank"><span style="text-decoration:underline;color:rgb(41,128,185)">achen@</span></a><a href="http://fuze.com" target="_blank"><span style="text-decoration:underline;color:rgb(41,128,185)">fuze.com</span></a><br></p>
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</blockquote></div><br clear="all"><div><br></div>-- <br><div dir="ltr" class="gmail_signature"><div dir="ltr"><div><div dir="ltr"><div dir="ltr" style="font-size:12.8px">Andy Chen</div><div dir="ltr" style="font-size:12.8px"><div>Sr. Telephony Lead Engineer</div><div>415 516 5535 (M)</div><div><a href="mailto:achen@thinkingphones.com" target="_blank">achen@</a><a href="http://fuze.com" target="_blank">fuze.com</a></div><div><br></div></div></div></div></div></div>
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