From 3af55f14fa351f9e9349289939f7a68df3696c9d Mon Sep 17 00:00:00 2001
From: Sean Bright <sean@seanbright.com>
Date: Tue, 17 Oct 2023 11:33:41 -0400
Subject: [PATCH] res_pjsip_dtmf_info.c: Add 'INFO' to Allow header.

Fixes #376
---
 res/res_pjsip_dtmf_info.c | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/res/res_pjsip_dtmf_info.c b/res/res_pjsip_dtmf_info.c
index bbc0640661..df7adf2697 100644
--- a/res/res_pjsip_dtmf_info.c
+++ b/res/res_pjsip_dtmf_info.c
@@ -163,6 +163,13 @@ static struct ast_sip_session_supplement dtmf_info_supplement = {
 
 static int load_module(void)
 {
+	static const pj_str_t STR_INFO = { "INFO", 4 };
+
+	if (pjsip_endpt_add_capability(ast_sip_get_pjsip_endpoint(),
+			NULL, PJSIP_H_ALLOW, NULL, 1, &STR_INFO) != PJ_SUCCESS) {
+		return AST_MODULE_LOAD_DECLINE;
+	}
+
 	ast_sip_session_register_supplement(&dtmf_info_supplement);
 	return AST_MODULE_LOAD_SUCCESS;
 }
-- 
2.47.2