DSM:mod_dlg: added setting errno if dlg.acceptInvite fails

apps/dsm/mods/mod_dlg/ModDlg.cpp

@@ -170,6 +170,9 @@ EXEC_ACTION_START(DLGAcceptInviteAction) {
     ERROR("%i %s\n",e.code,e.reason.c_str());
     sess->setStopped();
     sess->dlg.reply(*sc_sess->last_req.get(),e.code,e.reason);
+
+    sc_sess->SET_ERRNO(DSM_ERRNO_DLG);
+    sc_sess->SET_STRERROR("Error accepting call: "+ int2str(e.code) + " "+ e.reason);
   }
 } EXEC_ACTION_END;
 

apps/dsm/mods/mod_dlg/ModDlg.h

@@ -30,6 +30,8 @@
 
 #define MOD_CLS_NAME DLGModule 
 
+#define DSM_ERRNO_DLG "dlg"
+
 DECLARE_MODULE_BEGIN(MOD_CLS_NAME);
 bool onInvite(const AmSipRequest& req, DSMSession* sess);
 DECLARE_MODULE_END;

doc/dsm/mods/Readme.mod_dlg.txt

@@ -30,7 +30,7 @@ dlg.acceptInvite([code, reason]);
  * sets $errno (arg,general)
  
  accept audio stream from last_req (INVITE), and reply with 200 OK (default)
- or code, reason
+ or code, reason. sets "dlg" type errno if negotiation fails.
  
 dlg.bye([headers])
  send BYE. useful for example for continuing processing after call has ended.