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Sofia Behaviour Modification (please document)

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1) This commit adds the ability to override the To: header so you
   can place an outbound SIP call to a paticular destination.

   For instance, if you have a user registered to your machine as 'gateway' and
   you want to call another extension at that machine 'foo' you can now call:

  sofia/mydomain.com/gateway:foo@anydomain.com

  or if you just want to call some SIP url and put an alternate To:
  so you can do forwarding:

  sofia/mydomain.com/1000@somwhere.com:12122551234@realdest.com


2) You can add headers to outbound SIP calls by
   prefixing the string 'SIP_h_' to any channel variable:

   <action application="set" data="SIP_h_X-Answer=42"/>
   <action application="bridge" data="sofia/mydomain.com/1000@somehost.com"/>

3) All inbound SIP calls will install any X- headers into local variables
   this means in conjunction with item 2, all X- headers will pass across 
   bridged calls auto-magicly.

4) The switch_ivr_transfer_variable function in switch_ivr.c has been modified so if the last arguement
   'var' starts with a ~ it will copy anything that is prefixed with that string rather than an exact match.

*NOTE* you are not required to put an X- prefix in the SIP_h_ vars but 
it is reccommended because most SIP devices will ignore any unknown headers that don't.




git-svn-id: http://svn.freeswitch.org/svn/freeswitch/trunk@4216 d0543943-73ff-0310-b7d9-9358b9ac24b2
This commit is contained in:
Anthony Minessale
2007-02-13 01:22:17 +00:00
parent df79b479d9
commit be118eb28a
2 changed files with 63 additions and 8 deletions
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11
src/switch_ivr.c
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@@ -3693,8 +3693,15 @@ SWITCH_DECLARE(switch_status_t) switch_ivr_transfer_variable(switch_core_session
switch_channel_t *chana = switch_core_session_get_channel(sessa);
switch_channel_t *chanb = switch_core_session_get_channel(sessb);
char *val = NULL;
uint8_t prefix = 0;
if (var) {
if (var && *var == '~') {
var++;
prefix = 1;
}
if (var && !prefix) {
if ((val = switch_channel_get_variable(chana, var))) {
switch_channel_set_variable(chanb, var, val);
}
@@ -3705,7 +3712,7 @@ SWITCH_DECLARE(switch_status_t) switch_ivr_transfer_variable(switch_core_session
for (hi = switch_channel_variable_first(chana, switch_core_session_get_pool(sessa)); hi; hi = switch_hash_next(hi)) {
switch_hash_this(hi, &vvar, NULL, &vval);
if (vvar && vval) {
if (vvar && vval && (!prefix || (var && !strncmp((char *)vvar, var, strlen(var))))) {
switch_channel_set_variable(chanb, (char *) vvar, (char *) vval);
}
}