Code snippet
#!ifdef WITH_TCP
        #$ru = $ru + ";transport=tcp";
        #force_send_socket(xx.xx.xx.xx:5060); where xx.xx.xx.xx is Kamailio 
IP-Address
        xlog("L_INFO","=>Transport TCP");
        xlog("L_INFO","  =>du:$du");
        xlog("L_INFO","  =>ru:$ru");
        if (!t_relay_to_tcp()) {
           sl_reply_error();
        }
#!else
        xlog("L_INFO","=>Transport UDP");
        xlog("L_INFO","  =>du:$du");
        xlog("L_INFO","  =>ru:$ru");
        if (!t_relay()) {
           sl_reply_error();
        }
#!endif


LOG =>

ERROR: <core> [core/pvapi.c:1377]: pv_printf(): no more space for spec value
ERROR: <core> [core/pvapi.c:1386]: pv_printf(): buffer overflow -- increase the
        NOTE: I have both of these set to 8K and still get these errors

INFO: <script>: =>Transport TCP
INFO: <script>:   
=>du:sip:9NCUg2nceiuKagasFQFsAbtsMGcH1yE=@xx.xx.xx.xx:54080;transport=TCP;lr;r2=on;ftag=suhg8sv2lm;nat=yes
INFO: <script>:   
=>ru:sip:9NCUg2nceiuKagasFQFsAbtsMGcH1yE=@xx.xx.xx.xx:54080;transport=TCP;lr;r2=on;ftag=suhg8sv2lm;nat=yes
WARNING: <core> [core/forward.c:231]: get_send_socket2(): protocol/port 
mismatch (forced tls:xx.xx.xx.xx:443, to tcp:xx.xx.xx.xx:54080)
ERROR: <core> [core/tcp_main.c:2660]: tcpconn_1st_send(): connect 
172.21.1.108:54080 failed (RST) Connection refused
ERROR: <core> [core/tcp_main.c:2670]: tcpconn_1st_send(): xx.xx.xx.xx:54080: 
connect & send  for 0x7f1915a61040 failed: Connection refused (111)
         NOTE: Our tcp ports are controlled, a port number this high would 
never be opend on our server
         NOTE: This error occurs on ACK back to the INVITE


From: sr-users [mailto:sr-users-boun...@lists.kamailio.org] On Behalf Of Mack 
Hendricks
Sent: Thursday, May 17, 2018 9:43 AM
To: Kamailio (SER) - Users Mailing List <sr-users@lists.kamailio.org>
Subject: Re: [SR-Users] Further question on transport issue.

Hey Steve,

Can provide us a snippet of code on how you are populating the $ru and making 
invoking the relay?

Mack Hendricks / Head of Support / dOpenSource
web: http://dopensource.com
support: +888-907-2085
dSIPRouter<http://dsiprouter.org> - GUI focused on implementing Kamailio to 
provide SIP Trunking and PBX Hosting Services


On May 17, 2018, at 3:36 PM, Wilkins, Steve 
<swwilk...@mitre.org<mailto:swwilk...@mitre.org>> wrote:

Hello,

I am still struggling with getting TCP relay to work.  Kamailio is now trying 
to send TCP but it is using the incorrect port.  Kamailio is relaying to 
Asterisk on xx.xx.xx.xx:some-large-port but Asterisk is listening on 
xx.xx.xx.xx:5060.  I’m not sure why this is happening.  I would appreciate any 
help.

Thank you,
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