The xtcp connection is down

[wuai1024]

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

[xqzr]

nat type: HardNAT

可能 ISP 将 NAT 类型更改为更严格的

[wuai1024]

我的是全锥型网络

[fatedier]

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。

[wuai1024]

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]

目前是一端为 NAT1 ，一端为 NAT4

[wuai1024]

已成功了，谢谢大佬 @fatedier ！