From e4cdc5f213ad2784fb81b8d61d4203013c9e3426 Mon Sep 17 00:00:00 2001
From: ziyue <1213642868@qq.com>
Date: Thu, 14 Oct 2021 16:22:13 +0800
Subject: [PATCH] =?UTF-8?q?webrtc=20extmap=E6=96=B9=E5=90=91=E5=8C=B9?=
 =?UTF-8?q?=E9=85=8D=E5=A4=B1=E8=B4=A5=E6=97=B6=EF=BC=8C=E4=B8=8D=E6=B7=BB?=
 =?UTF-8?q?=E5=8A=A0=E8=BF=9Bsdp?=
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---
 webrtc/Sdp.cpp | 8 +++++++-
 1 file changed, 7 insertions(+), 1 deletion(-)

diff --git a/webrtc/Sdp.cpp b/webrtc/Sdp.cpp
index 43bfe640..c1e082ea 100644
--- a/webrtc/Sdp.cpp
+++ b/webrtc/Sdp.cpp
@@ -1749,8 +1749,14 @@ RETRY:
             for (auto &ext : offer_media.extmap) {
                 auto it = configure.extmap.find(RtpExt::getExtType(ext.ext));
                 if (it != configure.extmap.end()) {
+                    auto new_dir = matchDirection(ext.direction, it->second);
+                    switch (new_dir) {
+                        case RtpDirection::invalid:
+                        case RtpDirection::inactive: continue;
+                        default: break;
+                    }
                     answer_media.extmap.emplace_back(ext);
-                    answer_media.extmap.back().direction = matchDirection(ext.direction, it->second);
+                    answer_media.extmap.back().direction = new_dir;
                 }
             }