[GH-ISSUE #4232] The xtcp connection is down #3334

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opened 2026-05-05 14:09:06 -06:00 by gitea-mirror · 7 comments

gitea-mirror commented

2026-05-05 14:09:06 -06:00

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Originally created by @wuai1024 on GitHub (May 21, 2024).
Original GitHub issue: https://github.com/fatedier/frp/issues/4232

Describe the feature request

2024-05-21 17:27:58.704 [I] [sub/root.go:142] start frpc service for config file [frpc.yaml]
2024-05-21 17:27:58.705 [I] [client/service.go:294] try to connect to server...
2024-05-21 17:27:58.812 [I] [client/service.go:286] [5c289ba45db687ca] login to server success, get run id [5c289ba45db687ca]
2024-05-21 17:27:58.813 [I] [visitor/visitor_manager.go:121] [5c289ba45db687ca] start visitor success
2024-05-21 17:27:58.813 [I] [visitor/visitor_manager.go:172] [5c289ba45db687ca] visitor added: [mac-temp.ssh]
2024-05-21 17:27:59.330 [I] [visitor/xtcp.go:283] [5c289ba45db687ca] [mac-temp.ssh] nathole prepare success, nat type: HardNAT, behavior: BehaviorIPChanged, addresses: [103.155.100.145:6807 103.155.100.146:6807], assistedAddresses: [192.168.7.104:54777]
2024-05-21 17:28:02.003 [I] [visitor/xtcp.go:309] [5c289ba45db687ca] [mac-temp.ssh] get natHoleRespMsg, sid [1716283678f6538625a86f4f00], protocol [kcp], candidate address [45.140.88.18:34306 45.140.88.18:49620], assisted address [192.168.1.24:44500 172.18.0.1:44500 172.17.0.1:44500], detectBehavior: {Role:sender Mode:0 TTL:0 SendDelayMs:0 ReadTimeoutMs:5000 CandidatePorts:[] SendRandomPorts:0 ListenRandomPorts:0}
2024-05-21 17:28:07.005 [W] [visitor/xtcp.go:316] [5c289ba45db687ca] [mac-temp.ssh] make hole error: wait detect message error: read udp4 0.0.0.0:54777: i/o timeout

Describe alternatives you've considered

No response

Affected area

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

Originally created by @wuai1024 on GitHub (May 21, 2024). Original GitHub issue: https://github.com/fatedier/frp/issues/4232 ### Describe the feature request ```log 2024-05-21 17:27:58.704 [I] [sub/root.go:142] start frpc service for config file [frpc.yaml] 2024-05-21 17:27:58.705 [I] [client/service.go:294] try to connect to server... 2024-05-21 17:27:58.812 [I] [client/service.go:286] [5c289ba45db687ca] login to server success, get run id [5c289ba45db687ca] 2024-05-21 17:27:58.813 [I] [visitor/visitor_manager.go:121] [5c289ba45db687ca] start visitor success 2024-05-21 17:27:58.813 [I] [visitor/visitor_manager.go:172] [5c289ba45db687ca] visitor added: [mac-temp.ssh] 2024-05-21 17:27:59.330 [I] [visitor/xtcp.go:283] [5c289ba45db687ca] [mac-temp.ssh] nathole prepare success, nat type: HardNAT, behavior: BehaviorIPChanged, addresses: [103.155.100.145:6807 103.155.100.146:6807], assistedAddresses: [192.168.7.104:54777] 2024-05-21 17:28:02.003 [I] [visitor/xtcp.go:309] [5c289ba45db687ca] [mac-temp.ssh] get natHoleRespMsg, sid [1716283678f6538625a86f4f00], protocol [kcp], candidate address [45.140.88.18:34306 45.140.88.18:49620], assisted address [192.168.1.24:44500 172.18.0.1:44500 172.17.0.1:44500], detectBehavior: {Role:sender Mode:0 TTL:0 SendDelayMs:0 ReadTimeoutMs:5000 CandidatePorts:[] SendRandomPorts:0 ListenRandomPorts:0} 2024-05-21 17:28:07.005 [W] [visitor/xtcp.go:316] [5c289ba45db687ca] [mac-temp.ssh] make hole error: wait detect message error: read udp4 0.0.0.0:54777: i/o timeout ``` ### Describe alternatives you've considered _No response_ ### 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

2026-05-05 14:09:07 -06:00

gitea-mirror commented

2026-05-05 14:09:09 -06:00

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@xqzr commented on GitHub (May 21, 2024):

nat type: HardNAT

可能 ISP 将 NAT 类型更改为更严格的

@xqzr commented on GitHub (May 21, 2024): > nat type: **HardNAT** 可能 ISP 将 NAT 类型更改为更严格的

gitea-mirror commented

2026-05-05 14:09:10 -06:00

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@wuai1024 commented on GitHub (May 22, 2024):

我的是全锥型网络

@wuai1024 commented on GitHub (May 22, 2024): 我的是全锥型网络

gitea-mirror commented

2026-05-05 14:09:10 -06:00

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@fatedier commented on GitHub (May 22, 2024):

分类为 HardNAT ，无法穿透属于正常现象，文档中已经说明可用性和稳定性无法保证，在需要可靠连接的情况下，建议使用 STCP 替代。

建议可以多次尝试，以及配置 keepTunnelOpen = true 自动重试，如果还是不行建议放弃。

@fatedier commented on GitHub (May 22, 2024): 分类为 HardNAT ，无法穿透属于正常现象，文档中已经说明可用性和稳定性无法保证，在需要可靠连接的情况下，建议使用 STCP 替代。建议可以多次尝试，以及配置 `keepTunnelOpen = true` 自动重试，如果还是不行建议放弃。

gitea-mirror commented

2026-05-05 14:09:11 -06:00

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@wuai1024 commented on GitHub (May 22, 2024):

提供端 frpc 日志

2024-05-22 14:43:51.279 [I] [proxy/xtcp.go:72] [bb07b93ee913cc78] [ikuai.ssh-xtcp] nathole prepare success, nat type: EasyNAT, behavior: BehaviorNoChange, addresses: [117.143.124.254:9392 117.143.124.254:9392], assistedAddresses: [192.168.253.3:35594]
2024-05-22 14:43:52.290 [I] [proxy/xtcp.go:93] [bb07b93ee913cc78] [ikuai.ssh-xtcp] get natHoleRespMsg, sid [1716360230ec3bb64dfc6c37f9], protocol [kcp], candidate address [103.155.100.136:3750 103.155.100.135:3750], assisted address [192.168.6.166:58597], detectBehavior: {Role:sender Mode:2 TTL:0 SendDelayMs:3000 ReadTimeoutMs:35000 CandidatePorts:[] SendRandomPorts:1000 ListenRandomPorts:0}

访问端frpc日志：

2024-05-22 14:44:31.090 [I] [visitor/xtcp.go:283] [6cae7aba85645393] [mac-temp.ssh] nathole prepare success, nat type: HardNAT, behavior: BehaviorIPChanged, addresses: [103.155.100.148:62382 103.155.100.147:62382], assistedAddresses: [192.168.6.166:60626]
2024-05-22 14:44:31.929 [I] [visitor/xtcp.go:309] [6cae7aba85645393] [mac-temp.ssh] get natHoleRespMsg, sid [17163602708250f12fa9b2a3d2], protocol [kcp], candidate address [117.143.124.254:9457], assisted address [192.168.253.3:45388], detectBehavior: {Role:receiver Mode:2 TTL:7 SendDelayMs:0 ReadTimeoutMs:38000 CandidatePorts:[] SendRandomPorts:0 ListenRandomPorts:256}
2024-05-22 14:44:50.521 [E] [visitor/xtcp.go:179] [6cae7aba85645393] [mac-temp.ssh] open tunnel error: open tunnel timeout
2024-05-22 14:45:07.861 [W] [visitor/xtcp.go:146] [6cae7aba85645393] [mac-temp.ssh] keepTunnelOpenWorker get tunnel connection error: no tunnel session
2024-05-22 14:45:09.955 [W] [visitor/xtcp.go:316] [6cae7aba85645393] [mac-temp.ssh] make hole error: wait detect message timeout

@wuai1024 commented on GitHub (May 22, 2024): > 提供端 frpc 日志 ``` shell 2024-05-22 14:43:51.279 [I] [proxy/xtcp.go:72] [bb07b93ee913cc78] [ikuai.ssh-xtcp] nathole prepare success, nat type: EasyNAT, behavior: BehaviorNoChange, addresses: [117.143.124.254:9392 117.143.124.254:9392], assistedAddresses: [192.168.253.3:35594] 2024-05-22 14:43:52.290 [I] [proxy/xtcp.go:93] [bb07b93ee913cc78] [ikuai.ssh-xtcp] get natHoleRespMsg, sid [1716360230ec3bb64dfc6c37f9], protocol [kcp], candidate address [103.155.100.136:3750 103.155.100.135:3750], assisted address [192.168.6.166:58597], detectBehavior: {Role:sender Mode:2 TTL:0 SendDelayMs:3000 ReadTimeoutMs:35000 CandidatePorts:[] SendRandomPorts:1000 ListenRandomPorts:0} ``` > 访问端frpc日志： ``` shell 2024-05-22 14:44:31.090 [I] [visitor/xtcp.go:283] [6cae7aba85645393] [mac-temp.ssh] nathole prepare success, nat type: HardNAT, behavior: BehaviorIPChanged, addresses: [103.155.100.148:62382 103.155.100.147:62382], assistedAddresses: [192.168.6.166:60626] 2024-05-22 14:44:31.929 [I] [visitor/xtcp.go:309] [6cae7aba85645393] [mac-temp.ssh] get natHoleRespMsg, sid [17163602708250f12fa9b2a3d2], protocol [kcp], candidate address [117.143.124.254:9457], assisted address [192.168.253.3:45388], detectBehavior: {Role:receiver Mode:2 TTL:7 SendDelayMs:0 ReadTimeoutMs:38000 CandidatePorts:[] SendRandomPorts:0 ListenRandomPorts:256} 2024-05-22 14:44:50.521 [E] [visitor/xtcp.go:179] [6cae7aba85645393] [mac-temp.ssh] open tunnel error: open tunnel timeout 2024-05-22 14:45:07.861 [W] [visitor/xtcp.go:146] [6cae7aba85645393] [mac-temp.ssh] keepTunnelOpenWorker get tunnel connection error: no tunnel session 2024-05-22 14:45:09.955 [W] [visitor/xtcp.go:316] [6cae7aba85645393] [mac-temp.ssh] make hole error: wait detect message timeout ```

gitea-mirror commented

2026-05-05 14:09:11 -06:00

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@wuai1024 commented on GitHub (May 22, 2024):

目前是一端为 NAT1 ，一端为 NAT4

@wuai1024 commented on GitHub (May 22, 2024): 目前是一端为 NAT1 ，一端为 NAT4

gitea-mirror commented

2026-05-05 14:09:12 -06:00

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@wuai1024 commented on GitHub (May 22, 2024):