#include <stdio.h>
#include <sofia-sip/nua.h>
#define CALLER 1

void send_message (nua_t *nua);

void event_callback(nua_event_t   event,
					int           status,
					char const   *phrase,
					nua_t        *nua,
					nua_magic_t  *magic,
					nua_handle_t *nh,
					nua_hmagic_t *hmagic,
					sip_t const  *sip,
					tagi_t        tags[]);

int main (int argc, char *argv[])
{
	su_root_t *root;
	nua_t *nua;

	/* Initialize Sofia-SIP library and create event loop */

	su_init ();
	root = su_root_create (NULL);

	/* Create a user agent instance. Caller and callee should bind to different
	* address to avoid conflicts. The stack will call the 'event_callback()' 
	* callback when events such as succesful registration to network, 
	* an incoming call, etc, occur. 
	*/
	nua = nua_create(root, /* Event loop */
		event_callback, /* Callback for processing events */
		NULL, /* Additional data to pass to callback */

		NUTAG_URL("sip:0.0.0.0:5062"), /* Address to bind to */
		TAG_END()); /* Last tag should always finish the sequence */

	send_message (nua);

	/* Run event loop */
	su_root_run (root);

	/* Destroy allocated resources */
	nua_destroy (nua);
	su_root_destroy (root);
	su_deinit ();

	return 0;
}

/* This callback will be called by SIP stack to
* process incoming events 
*/
void event_callback(nua_event_t   event,
					int           status,
					char const   *phrase,
					nua_t        *nua,
					nua_magic_t  *magic,
					nua_handle_t *nh,
					nua_hmagic_t *hmagic,
					sip_t const  *sip,
					tagi_t        tags[])
{
	printf ("Hello world!\n"
		"I have received an event %s status %d %s\n", 
		nua_event_name (event), status, phrase);
}



/* Create a communication handle, send MESSAGE with it and destroy it */
void send_message (nua_t *nua)
{
	nua_handle_t *handle;

	handle = nua_handle(nua, NULL, SIPTAG_TO_STR("sip:0871737978@212.27.52.5:5060"), TAG_END());

	nua_register(handle,SIPTAG_FROM_STR("sip:0871737978@212.27.52.5:5060"), NUTAG_REGISTRAR("sip:212.27.52.5:5060"),TAG_NULL()); 

	nua_handle_destroy (handle);
}