chan_sip: Expand hook flash recognition.

Some ATAs send hook flash events as application/hook-flash, rather than a DTMF
event. Now, we also recognize hook-flash as a flash event.

ASTERISK-29370

Change-Id: I1c3b82a040dff3affcd94bad8ce33edc90c04725

diff --git a/channels/chan_sip.c b/channels/chan_sip.c
index b13b892644dd4d37fe6b88df45042ad3404fb59e..1c9ba5f9c2d8e02fcda817e1dfabe1aae8c80f00 100644 (file)
--- a/channels/chan_sip.c
+++ b/channels/chan_sip.c
@@ -22626,6 +22626,18 @@ static void handle_request_info(struct sip_pvt *p, struct sip_request *req)
        const char *c = sip_get_header(req, "Content-Type");
 
        /* Need to check the media/type */
+
+       if (!strcasecmp(c, "application/hook-flash")) {
+               /* send a FLASH event, for ATAs that send flash as hook-flash not dtmf */
+               struct ast_frame f = { AST_FRAME_CONTROL, { AST_CONTROL_FLASH, } };
+               ast_queue_frame(p->owner, &f);
+               if (sipdebug) {
+                       ast_verbose("* DTMF-relay event received: FLASH\n");
+               }
+               transmit_response(p, "200 OK", req);
+               return;
+       }
+
        if (!strcasecmp(c, "application/dtmf-relay") ||
            !strcasecmp(c, "application/vnd.nortelnetworks.digits") ||
            !strcasecmp(c, "application/dtmf")) {