dialog: add one more param to dlg_send_sequential mi function

Author: smititelu

modules/dialog/dialog.c

@@ -433,6 +433,7 @@ static const mi_export_t mi_cmds[] = {
 		{mi_send_sequential_dlg, {"callid", "mode", "body", 0}},
 		{mi_send_sequential_dlg, {"callid", "method", "body", 0}},
 		{mi_send_sequential_dlg, {"callid", "method", "body", "mode", 0}},
+		{mi_send_sequential_dlg, {"callid", "method", "body", "mode", "headers", 0}},
 		{EMPTY_MI_RECIPE}}
 	},
 	{EMPTY_MI_EXPORT}

modules/dialog/dlg_req_within.c

@@ -796,7 +796,7 @@ static void dlg_sequential_reply(struct cell* t, int type, struct tmcb_params* p
 }
 
 static mi_response_t *mi_send_sequential(struct dlg_cell *dlg, int sleg,
-		str *method, str *body, str *ct, int challenge, struct mi_handler *async_hdl)
+		str *method, str *body, str *headers, str *ct, int challenge, struct mi_handler *async_hdl)
 {
 	struct dlg_sequential_param *param;
 	int dleg = other_leg(dlg, sleg);
@@ -817,7 +817,7 @@ static mi_response_t *mi_send_sequential(struct dlg_cell *dlg, int sleg,
 	param->method.s = (char *)(param + 1);
 	memcpy(param->method.s, method->s, method->len);
 
-	if (!dlg_get_leg_hdrs(dlg, sleg, dleg, ct, NULL, &extra_headers)) {
+	if (!dlg_get_leg_hdrs(dlg, sleg, dleg, ct, headers, &extra_headers)) {
 		LM_ERR("No more pkg for extra headers \n");
 		shm_free(param);
 		return init_mi_error(500, MI_SSTR("Internal Error"));
@@ -953,6 +953,7 @@ mi_response_t *mi_send_sequential_dlg(const mi_params_t *params,
 	str callid;
 	str body;
 	str ct;
+	str headers;
 	int leg, challenge, body_mode;
 
 	if (get_mi_string_param(params, "callid", &callid.s, &callid.len) < 0)
@@ -966,6 +967,11 @@ mi_response_t *mi_send_sequential_dlg(const mi_params_t *params,
 		method.len = 6;
 	}
 
+	if (try_get_mi_string_param(params, "headers", &headers.s, &headers.len) < 0) {
+		headers.s = "";
+		headers.len = 0;
+	}
+
 	if ((body_mode = mi_parse_body_mode(params, &ct, &body)) < 0)
 		return init_mi_error(400, MI_SSTR("Invalid body mode"));
 
@@ -998,7 +1004,7 @@ mi_response_t *mi_send_sequential_dlg(const mi_params_t *params,
 		content = NULL;
 
 	return mi_send_sequential(dlg, leg, &method,
-			(body_mode == 0?NULL:&body), content, challenge, async_hdl);
+			(body_mode == 0?NULL:&body), &headers, content, challenge, async_hdl);
 }
 
 struct dlg_indialog_req_param {

modules/dialog/doc/dialog_admin.xml

@@ -3132,6 +3132,10 @@ event_route[E_RTPPROXY_DTMF] {
 					</para></listitem>
 				</itemizedlist>
 			</para></listitem>
+			<listitem><para>
+				<emphasis>headers</emphasis> - (optional) can be used to specify some headers for
+					the initial sequential message.
+			</para></listitem>
 		</itemizedlist>
 		<para>
 			This functions runs asynchronously and returns the status code and reason
@@ -3166,6 +3170,18 @@ event_route[E_RTPPROXY_DTMF] {
 				method=UPDATE
 		</programlisting>
 
+		<para>
+		MI Command used to send REFER to the callee, and add Refer-To header:
+		</para>
+		<programlisting  format="linespecific">
+			opensips-cli -x mi dlg_send_sequential \
+				callid=usR8FlGOSMfCTAIHebHCOQ.. \
+				method=REFER \
+				body=none \
+				mode=callee \
+				headers='Refer-To: sip:user@domain:50060'
+		</programlisting>
+
 		</section>
 	</section>