[GH-ISSUE #4927] Cannot proxy service exposed by frp in nginx

gitea-mirror commented

2026-05-05 14:28:55 -06:00

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Originally created by @HawtinZeng on GitHub (Aug 11, 2025).
Original GitHub issue: https://github.com/fatedier/frp/issues/4927

Bug Description

Returns 404 after we request proxied backend interface.

frpc Version

0.63.0

frps Version

0.63.0

System Architecture

linux/amd64

Configurations

part of the nginx config:

location /api/ {
proxy_pass http://api.hawtin.me:8085/;
proxy_set_header Host $host; # Important: Preserve original Host header
# proxy_set_header X-Forwarded-For $realip_remote_addr;
proxy_set_header X-Forwarded-For $remote_addr;
proxy_set_header X-Real-IP $remote_addr; # Optional: Forward client's IP
}

frps config:

bindPort = 7000
vhostHTTPPort = 8085

frpc confg:

serverAddr = "38.180.149.57"
serverPort = 7000

proxies
name = "ssh"
type = "tcp"
localIP = "127.0.0.1"
localPort = 22
remotePort = 6000

proxies
name = "back-hawtin-blog"
type = "http"
localIP = "127.0.0.1"
localPort = 3006
customDomains = ["18.120.139.17","api.hawtin.me"]

Logs

No response

Steps to reproduce

...

Affected area

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

Originally created by @HawtinZeng on GitHub (Aug 11, 2025). Original GitHub issue: https://github.com/fatedier/frp/issues/4927 ### Bug Description Returns 404 after we request proxied backend interface. ### frpc Version 0.63.0 ### frps Version 0.63.0 ### System Architecture linux/amd64 ### Configurations part of the nginx config: location /api/ { proxy_pass http://api.hawtin.me:8085/; proxy_set_header Host $host; # Important: Preserve original Host header # proxy_set_header X-Forwarded-For $realip_remote_addr; proxy_set_header X-Forwarded-For $remote_addr; proxy_set_header X-Real-IP $remote_addr; # Optional: Forward client's IP } frps config: bindPort = 7000 vhostHTTPPort = 8085 frpc confg: serverAddr = "38.180.149.57" serverPort = 7000 [[proxies]] name = "ssh" type = "tcp" localIP = "127.0.0.1" localPort = 22 remotePort = 6000 [[proxies]] name = "back-hawtin-blog" type = "http" localIP = "127.0.0.1" localPort = 3006 customDomains = ["18.120.139.17","api.hawtin.me"] ### Logs _No response_ ### Steps to reproduce 1. 2. 3. ... ### Affected area - [ ] Docs - [ ] Installation - [ ] Performance and Scalability - [ ] Security - [ ] User Experience - [ ] Test and Release - [x] Developer Infrastructure - [ ] Client Plugin - [ ] Server Plugin - [ ] Extensions - [ ] Others

gitea-mirror closed this issue

2026-05-05 14:28:56 -06:00

gitea-mirror commented

2026-05-05 14:28:58 -06:00

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@HawtinZeng commented on GitHub (Aug 12, 2025):

It's seems like frp will check whether $host in http header is included in the customDomains in frpc.toml. I resolved this problem by comment proxy_set_header Host $host; # Important: Preserve original Host header in nginx config or add replace api.hawtin.me with hawtin.me in frpc.toml customDomains fields.

@HawtinZeng commented on GitHub (Aug 12, 2025): It's seems like frp will check whether $host in http header is included in the customDomains in frpc.toml. I resolved this problem by comment `proxy_set_header Host $host; # Important: Preserve original Host header` in nginx config or add replace `api.hawtin.me` with `hawtin.me` in frpc.toml customDomains fields.

gitea-mirror referenced this issue

2026-05-05 14:50:09 -06:00

[PR #3887] [CLOSED] Update go-jose and crypto version #4860

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