Check of running Websites results in error "maxContentLength size of -1 exceeded"

⚠️ Please verify that this bug has NOT been raised before.

• I checked and didn’t find similar issue

🛡️ Security Policy

• I agree to have read this project Security Policy

Description

Hi,

i’m trying to monitor some websites (that are definitely up) but keep receiving an error “maxContentLength size of -1 exceeded”. Thank you for your help

👟 Reproduction steps

Add new Monitor -> HTTP(S) -> *put in whatever * -> save

👀 Expected behavior

Not to receive an error of any kind, Host being up

😓 Actual Behavior

Error: “maxContentLength size of -1 exceeded”

🐻 Uptime-Kuma Version

1.18.5

💻 Operating System and Arch

Hypervisor: Proxmox Virtual Environment 7.2-11 Virtual Machine: Ubuntu 22.04.1 LTS Kernel: Linux 5.15.60-2-pve

🌐 Browser

Brave 1.44.112 (Chromium 106.0.5249.119)

🐋 Docker Version

20.10.20

🟩 NodeJS Version

No response

📝 Relevant log output

docker logs uptime-kuma
[...]
2022-10-20T13:18:11.703Z [MONITOR] WARN: Monitor #7 'web': Pending: maxContentLength size of -1 exceeded | Max retries: 10 | Retry: 1 | Retry Interval: 60 seconds | Type: http
2022-10-20T13:19:46.563Z [MONITOR] WARN: Monitor #6 'Gitea': Pending: maxContentLength size of -1 exceeded | Max retries: 10 | Retry: 7 | Retry Interval: 60 seconds | Type: http
2022-10-20T13:19:59.942Z [MONITOR] WARN: Monitor #7 'web': Pending: maxContentLength size of -1 exceeded | Max retries: 10 | Retry: 2 | Retry Interval: 60 seconds | Type: http
2022-10-20T13:21:34.661Z [MONITOR] WARN: Monitor #6 'Gitea': Pending: maxContentLength size of -1 exceeded | Max retries: 10 | Retry: 8 | Retry Interval: 60 seconds | Type: http
2022-10-20T13:21:48.133Z [MONITOR] WARN: Monitor #7 'web': Pending: maxContentLength size of -1 exceeded | Max retries: 10 | Retry: 3 | Retry Interval: 60 seconds | Type: http
2022-10-20T13:23:22.753Z [MONITOR] WARN: Monitor #6 'Gitea': Pending: maxContentLength size of -1 exceeded | Max retries: 10 | Retry: 9 | Retry Interval: 60 seconds | Type: http
2022-10-20T13:23:26.475Z [MONITOR] INFO: Get Monitor: 6 User ID: 1
2022-10-20T13:25:10.884Z [MONITOR] WARN: Monitor #6 'Gitea': Pending: maxContentLength size of -1 exceeded | Max retries: 10 | Retry: 10 | Retry Interval: 60 seconds | Type: http
2022-10-20T13:25:36.657Z [MONITOR] WARN: Monitor #7 'web': Pending: maxContentLength size of -1 exceeded | Max retries: 10 | Retry: 1 | Retry Interval: 60 seconds | Type: http
2022-10-20T13:26:59.201Z [MONITOR] WARN: Monitor #6 'Gitea': Failing: maxContentLength size of -1 exceeded | Interval: 60 seconds | Type: http | Down Count: 0 | Resend Interval: 20

docker-compose.yml
version: '3'
services:
uptime-kuma:
image: louislam/uptime-kuma:latest
container_name: uptime-kuma
volumes:
- /home//uptime-kuma/data:/app/data
- /var/run/docker.sock:/var/run/docker.sock
ports:
- 3001:3001
restart: always

Docker info:
Client: Docker Engine - Community
Version: 20.10.20
API version: 1.41
Go version: go1.18.7
Git commit: 9fdeb9c
Built: Tue Oct 18 18:20:18 2022
OS/Arch: linux/amd64
Context: default
Experimental: true

Server: Docker Engine - Community
Engine:
Version: 20.10.20
API version: 1.41 (minimum version 1.12)
Go version: go1.18.7
Git commit: 03df974
Built: Tue Oct 18 18:18:08 2022
OS/Arch: linux/amd64
Experimental: false
containerd:
Version: 1.6.8
GitCommit: 9cd3357b7fd7218e4aec3eae239db1f68a5a6ec6
runc:
Version: 1.1.4
GitCommit: v1.1.4-0-g5fd4c4d
docker-init:
Version: 0.19.0
GitCommit: de40ad0

[louislam]

After some research, I managed to fix the issue, but I don’t exactly know what is happening here.

The solution is adding a header Accept-Encoding: gzip, deflate

https://stackoverflow.com/a/55918781/1097815

My guess is the plugin WP Fastest Cache do not handle plain text response without gzip correctly sometimes, force to gzip response fix the issue.

In curl, adding --compress also fix the issue

curl --compress https://www.estiafilosofia.org/

Free feel to try louislam/uptime-time:nightly

[simonbouchard]

Currently monitoring 99 properties, I’m having the same issue since yesterday, every ~15m from one website only.