ERR Serve tunnel error error="DialContext error: dial tcp i/o timeout

[user71715]

What is the name of the domain?

example.com

What is the error number?

none

What is the error message?

ERR Serve tunnel error error=“DialContext error: dial tcp 198.41.192.77:7844: i/o timeout”

What is the issue you’re encountering

Cloudflared not working on truenas apps

What steps have you taken to resolve the issue?

I checked the logs after the update and realized it wasn’t working. It was able to deploy successfully and normally, but was unable to establish a connection. I put truenas after openwrt v23.05 bypass gateway and I initially thought it was an openwrt issue, but it worked fine until I updated cloudflarev1.2.0 → v 1.2.5.

2024-12-23 07:19:54.971616+00:002024-12-23T07:19:54Z INF Starting tunnel tunnelID=d652c760-3ccf-45fd-b637-8be5cbf34702
2024-12-23 07:19:54.971668+00:002024-12-23T07:19:54Z INF Version 2024.12.2 (Checksum cb61fcb41380efff4e2ef0a1eeea23bcddff360e8703f99dbb5c24da1de937b9)
2024-12-23 07:19:54.971674+00:002024-12-23T07:19:54Z INF GOOS: linux, GOVersion: go1.22.5-devel-cf, GoArch: amd64
2024-12-23 07:19:54.971678+00:002024-12-23T07:19:54Z INF Settings: map[no-autoupdate:true]
2024-12-23 07:19:54.971683+00:002024-12-23T07:19:54Z INF Environmental variables map[TUNNEL_TOKEN:*****]
2024-12-23 07:19:54.971755+00:002024-12-23T07:19:54Z INF Generated Connector ID: d8b5a889-8a16-402f-933b-389f3847f1b1
2024-12-23 07:19:54.975843+00:002024-12-23T07:19:54Z INF Initial protocol quic
2024-12-23 07:19:54.980569+00:002024-12-23T07:19:54Z INF ICMP proxy will use 172.16.5.2 as source for IPv4
2024-12-23 07:19:54.980621+00:002024-12-23T07:19:54Z INF ICMP proxy will use ::1 in zone lo as source for IPv6
2024-12-23 07:19:54.985284+00:002024-12-23T07:19:54Z INF ICMP proxy will use 172.16.5.2 as source for IPv4
2024-12-23 07:19:54.985376+00:002024-12-23T07:19:54Z INF ICMP proxy will use ::1 in zone lo as source for IPv6
2024-12-23 07:19:54.985490+00:002024-12-23T07:19:54Z INF Starting metrics server on 127.0.0.1:20241/metrics
2024-12-23 07:19:54.987556+00:002024/12/23 07:19:54 failed to sufficiently increase receive buffer size (was: 208 kiB, wanted: 7168 kiB, got: 416 kiB). See https://github.com/quic-go/quic-go/wiki/UDP-Buffer-Sizes for details.
2024-12-23 07:19:59.990348+00:002024-12-23T07:19:59Z ERR Failed to dial a quic connection error="failed to dial to edge with quic: timeout: no recent network activity" connIndex=0 event=0 ip=198.41.192.107
2024-12-23 07:19:59.990481+00:002024-12-23T07:19:59Z INF Retrying connection in up to 2s connIndex=0 event=0 ip=198.41.192.107
2024-12-23 07:20:05.207616+00:002024-12-23T07:20:05Z ERR Failed to dial a quic connection error="failed to dial to edge with quic: timeout: no recent network activity" connIndex=0 event=0 ip=198.41.192.167
2024-12-23 07:20:05.207753+00:002024-12-23T07:20:05Z INF Retrying connection in up to 4s connIndex=0 event=0 ip=198.41.192.167
2024-12-23 07:20:11.457522+00:002024-12-23T07:20:11Z ERR Failed to dial a quic connection error="failed to dial to edge with quic: timeout: no recent network activity" connIndex=0 event=0 ip=198.41.192.47
2024-12-23 07:20:11.457658+00:002024-12-23T07:20:11Z INF Retrying connection in up to 8s connIndex=0 event=0 ip=198.41.192.47
2024-12-23 07:20:18.642862+00:002024-12-23T07:20:18Z ERR Failed to dial a quic connection error="failed to dial to edge with quic: timeout: no recent network activity" connIndex=0 event=0 ip=198.41.200.73
2024-12-23 07:20:18.642895+00:002024-12-23T07:20:18Z INF Retrying connection in up to 16s connIndex=0 event=0 ip=198.41.200.73
2024-12-23 07:20:30.141814+00:002024-12-23T07:20:30Z ERR Failed to dial a quic connection error="failed to dial to edge with quic: timeout: no recent network activity" connIndex=0 event=0 ip=198.41.192.107
2024-12-23 07:20:30.141911+00:002024-12-23T07:20:30Z INF Retrying connection in up to 32s connIndex=0 event=0 ip=198.41.192.107
2024-12-23 07:20:39.778089+00:002024-12-23T07:20:39Z ERR Failed to dial a quic connection error="failed to dial to edge with quic: timeout: no recent network activity" connIndex=0 event=0 ip=198.41.192.227
2024-12-23 07:20:39.778224+00:002024-12-23T07:20:39Z INF Retrying connection in up to 1m4s connIndex=0 event=0 ip=198.41.192.227
2024-12-23 07:20:56.092303+00:002024-12-23T07:20:56Z ERR Failed to dial a quic connection error="failed to dial to edge with quic: timeout: no recent network activity" connIndex=0 event=0 ip=198.41.200.43
2024-12-23 07:20:56.092417+00:002024-12-23T07:20:56Z INF Retrying connection in up to 1m4s connIndex=0 event=0 ip=198.41.200.43
2024-12-23 07:21:27.198045+00:002024-12-23T07:21:27Z ERR Failed to dial a quic connection error="failed to dial to edge with quic: timeout: no recent network activity" connIndex=0 event=0 ip=198.41.200.13
2024-12-23 07:21:27.198194+00:002024-12-23T07:21:27Z INF Retrying connection in up to 1m4s connIndex=0 event=0 ip=198.41.200.13
2024-12-23 07:21:52.816659+00:002024-12-23T07:21:52Z ERR Failed to dial a quic connection error="failed to dial to edge with quic: timeout: no recent network activity" connIndex=0 event=0 ip=198.41.192.67
2024-12-23 07:21:52.816772+00:002024-12-23T07:21:52Z INF Retrying connection in up to 1m4s connIndex=0 event=0 ip=198.41.192.67
2024-12-23 07:21:55.996144+00:002024-12-23T07:21:55Z WRN If this log occurs persistently, and cloudflared is unable to connect to Cloudflare Network with `quic` protocol, then most likely your machine/network is getting its egress UDP to port 7844 (or others) blocked or dropped. Make sure to allow egress connectivity as per https://developers.cloudflare.com/cloudflare-one/connections/connect-apps/configuration/ports-and-ips/
2024-12-23 07:21:55.996305+00:00If you are using private routing to this Tunnel, then ICMP, UDP (and Private DNS Resolution) will not work unless your cloudflared can connect with Cloudflare Network with `quic`. connIndex=0 event=0 ip=198.41.192.67
2024-12-23 07:21:55.996327+00:002024-12-23T07:21:55Z INF Switching to fallback protocol http2 connIndex=0 event=0 ip=198.41.192.67
2024-12-23 07:22:10.998905+00:002024-12-23T07:22:10Z ERR Unable to establish connection with Cloudflare edge error="DialContext error: dial tcp 198.41.200.43:7844: i/o timeout" connIndex=0 event=0 ip=198.41.200.43
2024-12-23 07:22:10.999001+00:002024-12-23T07:22:10Z ERR Serve tunnel error error="DialContext error: dial tcp 198.41.200.43:7844: i/o timeout" connIndex=0 event=0 ip=198.41.200.43
2024-12-23 07:22:10.999021+00:002024-12-23T07:22:10Z INF Retrying connection in up to 1s connIndex=0 event=0 ip=198.41.200.43
2024-12-23 07:22:27.799234+00:002024-12-23T07:22:27Z ERR Unable to establish connection with Cloudflare edge error="DialContext error: dial tcp 198.41.192.67:7844: i/o timeout" connIndex=0 event=0 ip=198.41.192.67
2024-12-23 07:22:27.799353+00:002024-12-23T07:22:27Z ERR Serve tunnel error error="DialContext error: dial tcp 198.41.192.67:7844: i/o timeout" connIndex=0 event=0 ip=198.41.192.67
2024-12-23 07:22:27.799406+00:002024-12-23T07:22:27Z INF Retrying connection in up to 4s connIndex=0 event=0 ip=198.41.192.67
2024-12-23 07:22:46.423718+00:002024-12-23T07:22:46Z ERR Unable to establish connection with Cloudflare edge error="DialContext error: dial tcp 198.41.200.43:7844: i/o timeout" connIndex=0 event=0 ip=198.41.200.43
2024-12-23 07:22:46.423858+00:002024-12-23T07:22:46Z ERR Serve tunnel error error="DialContext error: dial tcp 198.41.200.43:7844: i/o timeout" connIndex=0 event=0 ip=198.41.200.43
2024-12-23 07:22:46.423879+00:002024-12-23T07:22:46Z INF Retrying connection in up to 8s connIndex=0 event=0 ip=198.41.200.43
2024-12-23 07:23:08.074934+00:002024-12-23T07:23:08Z ERR Unable to establish connection with Cloudflare edge error="DialContext error: dial tcp 198.41.200.23:7844: i/o timeout" connIndex=0 event=0 ip=198.41.200.23
2024-12-23 07:23:08.075063+00:002024-12-23T07:23:08Z ERR Serve tunnel error error="DialContext error: dial tcp 198.41.200.23:7844: i/o timeout" connIndex=0 event=0 ip=198.41.200.23
2024-12-23 07:23:08.075077+00:002024-12-23T07:23:08Z INF Retrying connection in up to 16s connIndex=0 event=0 ip=198.41.200.23
2024-12-23 07:23:35.764188+00:002024-12-23T07:23:35Z ERR Unable to establish connection with Cloudflare edge error="DialContext error: dial tcp 198.41.192.27:7844: i/o timeout" connIndex=0 event=0 ip=198.41.192.27
2024-12-23 07:23:35.764323+00:002024-12-23T07:23:35Z ERR Serve tunnel error error="DialContext error: dial tcp 198.41.192.27:7844: i/o timeout" connIndex=0 event=0 ip=198.41.192.27
2024-12-23 07:23:35.764349+00:002024-12-23T07:23:35Z INF Retrying connection in up to 32s connIndex=0 event=0 ip=198.41.192.27
2024-12-23 07:24:16.396715+00:002024-12-23T07:24:16Z ERR Unable to establish connection with Cloudflare edge error="DialContext error: dial tcp 198.41.192.47:7844: i/o timeout" connIndex=0 event=0 ip=198.41.192.47
2024-12-23 07:24:16.396815+00:002024-12-23T07:24:16Z ERR Serve tunnel error error="DialContext error: dial tcp 198.41.192.47:7844: i/o timeout" connIndex=0 event=0 ip=198.41.192.47

[yassine2]

How are you setting up this tunnel?
Could you please let us know the steps you have taken and what documentation you have followed this far?

Have this tunnel previously worked before? Or is this a first time implementation of it?

Given the log messages you have shared with us, it appears that there is a connection refused occurring.

Could you please confirm that the endpoints below are not getting blocked on your network where you are trying to run the tunnel?

Tunnel with firewall · Cloudflare Zero Trust docs

[user71715]

I For truenas deployment, I didn’t follow the documentation because the app deployment process is relatively simple, but I can provide my screenshots.
More setup steps are on the VM (openwrt) on truenas.

[user71715]

[user71715]

[user71715]

[user71715]

[user71715]

[user71715]

I had learned that the go language for cloudflared seems to be not standard and causing problems, I wonder if that’s the cause of my problem as well?Can cloudflared be fixed with an updated version?

cloudflared: Needs to be built via Go with Cloudflare experimental patches