accpet error,the conn has closed

[sumerzhang]

Describe the bug
A clear and concise description of what the bug is.

2021/03/18 11:25:33.524 [D] [client.go:216] new tcp connection with the goal of 221.204.188.112:443, remote address:102.85.217.62:36094
2021/03/18 11:25:33.540 [D] [client.go:216] new tcp connection with the goal of 42.7.50.240:443, remote address:102.85.217.62:36102
2021/03/18 11:25:33.544 [D] [client.go:216] new tcp connection with the goal of 101.26.38.88:443, remote address:102.85.217.62:36106
2021/03/18 11:25:34.381 [W] [client.go:213] connect to 192.168.2.181:80 error dial tcp 192.168.2.181:80: connect: no route to host
2021/03/18 15:04:03.809 [D] [client.go:216] new tcp connection with the goal of 192.168.2.220:22, remote address:102.85.217.62:13113
2021/03/18 15:24:25 mux: ping time out, checktime 2 threshold 1
2021/03/18 15:24:25 close mux
2021/03/18 15:24:25.739 [W] [client.go:165] accpet error,the conn has closed
2021/03/18 15:24:25.739 [E] [client.go:92] Accept server data error read tcp 192.168.2.220:56550->252.146.216.63:8024: use of closed network connection, end this service
2021/03/18 15:24:26 mux: read session unpack from connection err read tcp 192.168.2.220:56552->252.146.216.63:8024: use of closed network connection

Expected behavior
accpet error,the conn has closed,
有10个客户端程序，只有其中这个程序运行中，但是假死，客户端掉线状态，
查看了#567, 但是在新版的0.26.9也会出现这种情况，是不是其他问题呢?

期待大佬解答，谢谢

npc.conf文件里面设置了

[common]
server_addr=xxx.xxx.xxx.xxx:8024
conn_type=tcp
vkey=honon6s44jhd3sm3
auto_connection=true
max_conn=10000
crypt=true
compress=true
disconnect_timeout=1

[socks5]
mode=socks5
server_port=8026

Screenshots or logs
Add screenshots or logs to help explain your problem.

Server (please complete the following information):

• OS: Centos7
• ARCH: Amd64, Arm
• Tunnel TCP, HTTP
• Version 0.26.9

Client (please complete the following information):

• OS:Ubuntu18
• ARCH: Amd64
• Tunnel TCP
• Version 0.26.9

[ffdfgdfg]

disconnect_timeout为什么要设置1，网络波动掉了

[sumerzhang]

之前这么设置主要想让掉线时，及时发现，自动重连。那里的disconnect_time一般设置成多少比较好？有什么建议？谢谢

[peaceanddemocracy]

默认的就可以