add preAnswer and ringReady too

src/mod/applications/mod_httapi/docs/mod_httapi_doc.txt

@@ -237,6 +237,13 @@ ATTRS:
 is-conference       : true|false (set the conference flag for RFC4579 stuff.
 
 
+<preAnswer>
+		    : Establish media on the call without answering.
+
+<ringReady>
+		    : Indicate ringing to an unaswered channel.
+
+
 <hangup cause action>
 		    : Hangup the call
 

src/mod/applications/mod_httapi/mod_httapi.c

@@ -879,13 +879,20 @@ static switch_status_t parse_hangup(const char *tag_name, client_t *client, swit
 
 static switch_status_t parse_answer(const char *tag_name, client_t *client, switch_xml_t tag, const char *body)
 {
-	const char *conf = switch_xml_attr(tag, "is-conference");
 
-	if (conf && switch_true(conf)) {
-		switch_channel_set_flag(client->channel, CF_CONFERENCE);
-	}
+	if (!strcasecmp(tag_name, "answer")) {
+		const char *conf = switch_xml_attr(tag, "is-conference");
+
+		if (conf && switch_true(conf)) {
+			switch_channel_set_flag(client->channel, CF_CONFERENCE);
+		}
 
-	switch_channel_answer(client->channel);
+		switch_channel_answer(client->channel);
+	} else if (!strcasecmp(tag_name, "preAnswer")) {
+		switch_channel_pre_answer(client->channel);
+	} else if (!strcasecmp(tag_name, "ringReady")) {
+		switch_channel_ring_ready(client->channel);
+	}
 
 	return SWITCH_STATUS_FALSE;
 }
@@ -3011,6 +3018,8 @@ SWITCH_MODULE_LOAD_FUNCTION(mod_httapi_load)
 	bind_parser("dial", parse_dial);
 	bind_parser("pause", parse_playback);
 	bind_parser("answer", parse_answer);
+	bind_parser("preAnswer", parse_answer);
+	bind_parser("ringReady", parse_answer);
 	bind_parser("hangup", parse_hangup);
 	bind_parser("record", parse_record);
 	bind_parser("recordCall", parse_record_call);