Ticket #732:
 - Added new Symbian specific API in PJLIB, pj_symbianos_set_connection_status(), to let PJLIB knows the connection status.
 - Added connection status checks before Symbian socket operations.
 - Added loop limiter in Symbian busy_sleep() to avoid the possibility of infinite loop.
 - Added sample of connection monitor in Symbian sample application (ua.cpp).




git-svn-id: https://svn.pjsip.org/repos/pjproject/trunk@2481 74dad513-b988-da41-8d7b-12977e46ad98
diff --git a/pjlib/include/pj/os.h b/pjlib/include/pj/os.h
index 0bd1863..4a5a77f 100644
--- a/pjlib/include/pj/os.h
+++ b/pjlib/include/pj/os.h
@@ -394,6 +394,18 @@
  */
 PJ_DECL(pj_status_t) pj_symbianos_set_params(pj_symbianos_params *prm);
 
+/**
+ *  Notify PJLIB that the access point connection has been down or unusable
+ *  and PJLIB should not try to access the Symbian socket API (especially ones
+ *  that send packets). Sending packet when RConnection is reconnected to 
+ *  different access point may cause the WaitForRequest() for the function to 
+ *  block indefinitely.
+ *  
+ *  @param up		If set to PJ_FALSE it will cause PJLIB to not try
+ *  			to access socket API, and error will be returned
+ *  			immediately instead.
+ */
+PJ_DECL(void) pj_symbianos_set_connection_status(pj_bool_t up);
 
 /**
  * @}