[GH-ISSUE #3371] 使用过程中重复断联，连接保持时间不超过5分钟，断开后显示connection refused

Originally created by @Lumtp on GitHub (Mar 26, 2023). Original GitHub issue: https://github.com/fatedier/frp/issues/3371 ### Bug Description 1.通过ssh可以短暂连接，短暂连接后断联 2.断联后约20min通过ssh再次连接均显示ssh: connect to host xx.xxxx.xxx.xx port 6002: Connection refused ### frpc Version frp_0.41.0_linux_amd64 ### frps Version frp_0.41.0_linux_amd64 ### System Architecture linux/amd64 Ubuntu 20.04 LTS ### Configurations frpc: [common] server_addr = xx.xxxx.xxx.xx server_port = 7000 tls_enable = true log_file =./frpc.log log_level = info [ssh2] type = tcp local_ip = 127.0.0.1 local_port = 22 remote_port = 6002 frps: bind_port = 7000 dashboard_port = 7500 dashboard_user = admin dashboard_pwd = admin enable_prometheus = true tls_enable = true log_file = ./frps.log log_level = info max_ports_per_client = 50 max_pool_count = 50 ~ ### Logs frpc日志： 2023/03/26 20:48:47 [I] [control.go:289] [c95a8eac9e8b7538] control writer is closing 2023/03/26 20:48:47 [E] [control.go:158] [c95a8eac9e8b7538] work connection closed before response StartWorkConn message: EOF 2023/03/26 20:48:47 [I] [service.go:174] [c95a8eac9e8b7538] try to reconnect to server... 2023/03/26 20:48:47 [I] [visitor_manager.go:60] [c95a8eac9e8b7538] gracefully shutdown visitor manager 2023/03/26 20:50:58 [W] [service.go:177] [c95a8eac9e8b7538] reconnect to server error: dial tcp xx.xxxx.xxx.xx:7000: connect: connection timed out 2023/03/26 20:50:59 [I] [service.go:174] [c95a8eac9e8b7538] try to reconnect to server... 2023/03/26 20:53:09 [W] [service.go:177] [c95a8eac9e8b7538] reconnect to server error: dial tcp xx.xxxx.xxx.xx:7000: connect: connection timed out 2023/03/26 20:53:11 [I] [service.go:174] [c95a8eac9e8b7538] try to reconnect to server... 2023/03/26 20:53:42 [I] [service.go:301] [c95a8eac9e8b7538] login to server success, get run id [c95a8eac9e8b7538], server udp port [0] 2023/03/26 20:53:42 [I] [proxy_manager.go:144] [c95a8eac9e8b7538] proxy added: [ssh2] 2023/03/26 20:53:42 [I] [control.go:180] [c95a8eac9e8b7538] [ssh2] start proxy success 2023/03/26 20:54:52 [I] [control.go:289] [c95a8eac9e8b7538] control writer is closing 2023/03/26 20:54:52 [E] [control.go:158] [c95a8eac9e8b7538] work connection closed before response Start frps日志： 2023/03/26 20:37:21 [I] [proxy.go:179] [c95a8eac9e8b7538] [ssh2] get a user connection [aaa.aa.aa.aaa:9195] 2023/03/26 20:47:39 [I] [proxy.go:179] [c95a8eac9e8b7538] [ssh2] get a user connection [aaa.aa.aa.aaa:6761] 2023/03/26 20:49:06 [I] [control.go:307] [c95a8eac9e8b7538] control writer is closing 2023/03/26 20:49:06 [I] [proxy.go:88] [c95a8eac9e8b7538] [ssh2] proxy closing 2023/03/26 20:49:06 [W] [proxy.go:176] [c95a8eac9e8b7538] [ssh2] listener is closed: accept tcp [::]:6002: use of closed network connection 2023/03/26 20:49:06 [I] [control.go:396] [c95a8eac9e8b7538] client exit success 2023/03/26 20:53:42 [I] [service.go:450] [c95a8eac9e8b7538] client login info: ip [cc.ccc.ccc.c:2549] version [0.38.0] hostname [] os [linux] arch [amd64] 2023/03/26 20:53:42 [I] [tcp.go:64] [c95a8eac9e8b7538] [ssh2] tcp proxy listen port [6002] 2023/03/26 20:53:42 [I] [control.go:465] [c95a8eac9e8b7538] new proxy [ssh2] success 2023/03/26 20:54:52 [I] [control.go:307] [c95a8eac9e8b7538] control writer is closing 2023/03/26 20:54:52 [I] [proxy.go:88] [c95a8eac9e8b7538] [ssh2] proxy closing 2023/03/26 20:54:52 [W] [proxy.go:176] [c95a8eac9e8b7538] [ssh2] listener is closed: accept tcp [::]:6002: use of closed network connection 2023/03/26 20:54:52 [I] [control.go:396] [c95a8eac9e8b7538] ### Steps to reproduce 1. 进行ssh连接，连接后很快连接中断 2. 再次进行ssh连接到内网服务端显示ssh: connect to host xx.xxxx.xxx.xx port 6002: Connection refused ### Affected area - [ ] Docs - [ ] Installation - [ ] Performance and Scalability - [ ] Security - [ ] User Experience - [ ] Test and Release - [ ] Developer Infrastructure - [ ] Client Plugin - [ ] Server Plugin - [ ] Extensions - [ ] Others

gitea-mirror commented

2026-05-05 13:44:16 -06:00

Owner

Originally created by @Lumtp on GitHub (Mar 26, 2023).
Original GitHub issue: https://github.com/fatedier/frp/issues/3371

Bug Description

1.通过ssh可以短暂连接，短暂连接后断联
2.断联后约20min通过ssh再次连接均显示ssh: connect to host xx.xxxx.xxx.xx port 6002: Connection refused

frpc Version

frp_0.41.0_linux_amd64

frps Version

System Architecture

linux/amd64 Ubuntu 20.04 LTS

Configurations

frpc:
[common]
server_addr = xx.xxxx.xxx.xx
server_port = 7000
tls_enable = true
log_file =./frpc.log
log_level = info [ssh2]
type = tcp
local_ip = 127.0.0.1
local_port = 22
remote_port = 6002

frps:
bind_port = 7000 dashboard_port = 7500
dashboard_user = admin
dashboard_pwd = admin
enable_prometheus = true
tls_enable = true log_file = ./frps.log
log_level = info
max_ports_per_client = 50
max_pool_count = 50
~

Logs

frpc日志：

2023/03/26 20:48:47 [I] [control.go:289] [c95a8eac9e8b7538] control writer is closing 2023/03/26 20:48:47 [E] [control.go:158] [c95a8eac9e8b7538] work connection closed before response StartWorkConn message: EOF
2023/03/26 20:48:47 [I] [service.go:174] [c95a8eac9e8b7538] try to reconnect to server... 2023/03/26 20:48:47 [I] [visitor_manager.go:60] [c95a8eac9e8b7538] gracefully shutdown visitor manager 2023/03/26 20:50:58 [W] [service.go:177] [c95a8eac9e8b7538] reconnect to server error: dial tcp xx.xxxx.xxx.xx:7000: connect: connection timed out
2023/03/26 20:50:59 [I] [service.go:174] [c95a8eac9e8b7538] try to reconnect to server... 2023/03/26 20:53:09 [W] [service.go:177] [c95a8eac9e8b7538] reconnect to server error: dial tcp xx.xxxx.xxx.xx:7000: connect: connection timed out
2023/03/26 20:53:11 [I] [service.go:174] [c95a8eac9e8b7538] try to reconnect to server... 2023/03/26 20:53:42 [I] [service.go:301] [c95a8eac9e8b7538] login to server success, get run id [c95a8eac9e8b7538], server udp port [0]
2023/03/26 20:53:42 [I] [proxy_manager.go:144] [c95a8eac9e8b7538] proxy added: [ssh2] 2023/03/26 20:53:42 [I] [control.go:180] [c95a8eac9e8b7538] [ssh2] start proxy success 2023/03/26 20:54:52 [I] [control.go:289] [c95a8eac9e8b7538] control writer is closing 2023/03/26 20:54:52 [E] [control.go:158] [c95a8eac9e8b7538] work connection closed before response Start

frps日志：
2023/03/26 20:37:21 [I] [proxy.go:179] [c95a8eac9e8b7538] [ssh2] get a user connection [aaa.aa.aa.aaa:9195] 2023/03/26 20:47:39 [I] [proxy.go:179] [c95a8eac9e8b7538] [ssh2] get a user connection [aaa.aa.aa.aaa:6761] 2023/03/26 20:49:06 [I] [control.go:307] [c95a8eac9e8b7538] control writer is closing 2023/03/26 20:49:06 [I] [proxy.go:88] [c95a8eac9e8b7538] [ssh2] proxy closing 2023/03/26 20:49:06 [W] [proxy.go:176] [c95a8eac9e8b7538] [ssh2] listener is closed: accept tcp [::]:6002: use of closed network connection
2023/03/26 20:49:06 [I] [control.go:396] [c95a8eac9e8b7538] client exit success 2023/03/26 20:53:42 [I] [service.go:450] [c95a8eac9e8b7538] client login info: ip [cc.ccc.ccc.c:2549] version [0.38.0] hostname [] os [linux] arch [amd64] 2023/03/26 20:53:42 [I] [tcp.go:64] [c95a8eac9e8b7538] [ssh2] tcp proxy listen port [6002] 2023/03/26 20:53:42 [I] [control.go:465] [c95a8eac9e8b7538] new proxy [ssh2] success 2023/03/26 20:54:52 [I] [control.go:307] [c95a8eac9e8b7538] control writer is closing 2023/03/26 20:54:52 [I] [proxy.go:88] [c95a8eac9e8b7538] [ssh2] proxy closing 2023/03/26 20:54:52 [W] [proxy.go:176] [c95a8eac9e8b7538] [ssh2] listener is closed: accept tcp [::]:6002: use of closed network connection
2023/03/26 20:54:52 [I] [control.go:396] [c95a8eac9e8b7538]

Steps to reproduce

进行ssh连接，连接后很快连接中断
再次进行ssh连接到内网服务端显示ssh: connect to host xx.xxxx.xxx.xx port 6002: Connection refused

Affected area

Docs
Installation
Performance and Scalability
Security
User Experience
Test and Release
Developer Infrastructure
Client Plugin
Server Plugin
Extensions
Others

gitea-mirror

closed this issue
added the
lifecycle/stale
label

2026-05-05 13:44:19 -06:00

Author

@github-actions[bot] commented on GitHub (Apr 26, 2023):

Issues go stale after 30d of inactivity. Stale issues rot after an additional 7d of inactivity and eventually close.

@github-actions[bot] commented on GitHub (Apr 26, 2023): Issues go stale after 30d of inactivity. Stale issues rot after an additional 7d of inactivity and eventually close.

gitea-mirror referenced this issue

2026-05-05 14:45:21 -06:00

[PR #2695] [MERGED] doc: add local_port for tcpmux example #4609

2026-05-05 14:45:33 -06:00

[PR #2782] [MERGED] bump version #4622