From 4fd53c98d9fd219521a4f02ffcfba158cab6c4aa Mon Sep 17 00:00:00 2001
From: q191201771 <191201771@qq.com>
Date: Wed, 7 Sep 2022 23:04:29 +0800
Subject: [PATCH] =?UTF-8?q?[fix]=20rtsp:=20server=E7=AB=AF=E6=B2=A1?=
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---
 pkg/rtsp/server_command_session.go | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/pkg/rtsp/server_command_session.go b/pkg/rtsp/server_command_session.go
index 69aaea9..6bfaf55 100644
--- a/pkg/rtsp/server_command_session.go
+++ b/pkg/rtsp/server_command_session.go
@@ -420,6 +420,13 @@ func (session *ServerCommandSession) handleRecord(requestCtx nazahttp.HttpReqMsg
 
 func (session *ServerCommandSession) handlePlay(requestCtx nazahttp.HttpReqMsgCtx) error {
 	Log.Infof("[%s] < R PLAY", session.uniqueKey)
+
+	// 没有收到前面的信令，直接收到Play信令
+	if session.subSession == nil {
+		Log.Errorf("[%s] handlePlay but subSession not exist.", session.uniqueKey)
+		return base.ErrRtsp
+	}
+
 	// TODO(chef): [opt] 上层关闭，可以考虑回复非200状态码再关闭
 	if err := session.observer.OnNewRtspSubSessionPlay(session.subSession); err != nil {
 		return err