Compile and run-time setting to allow printing of port number in URI in To and From header (thanks Marcus Froeschl for the suggestion)

[bennylp]

PJSIP does not put port number in To and From header, because that is explicitly not allowed by RFC 3261. Please have a look at this table, which shows which URI component is allowed to appear at which context: ​http://tools.ietf.org/html/rfc3261#page-152

However, some servers would still require clients to put the port number in these headers, hence a global configuration to lift this restriction would be beneficial to allow more interoperability.

[bennylp]

(In [3329]) Closed #1141: Compile and run-time setting to allow printing of port number in URI in To and From header (thanks Marcus Froeschl for the suggestion)

[bennylp]

There are two ways to allow printing of port number in From/To? header:

1. via run-time setting, by using this snippet in the application code:

   #include <pjsip/sip_config.h>
   
    pjsip_cfg()->endpt.allow_port_in_fromto_hdr = PJ_TRUE;
   

2. via compile time, by declaring this in your <pj/config_site.h> file:

   #define PJSIP_ALLOW_PORT_IN_FROMTO_HDR   1