Frp: Why logs "do http proxy request error: no such domain:"?

[GF-Huang]

[REQUIRED] hat version of frp are you using

Version: 0.34.3

[REQUIRED] What operating system and processor architecture are you using
OS: client: Win10 + server: Centos 7.6 by docker compose
CPU architecture: x64

[REQUIRED] description of errors
I want to make my home computer acts a http proxy to access public internet. In other words, I use my home computer as a http proxy, so I can use my home IP address to do something.

confile

frps:

[common]
bind_port = 8080
vhost_http_port = 8080

frpc:

[common]
server_addr = mydomain.com
server_port = 8080

[http_proxy]
type = tcp
plugin = http_proxy
remote_port = 6000

docker-compose.yml

version: "3.3"

services:
  frps:
    restart: always
    container_name: frps
    image: snowdreamtech/frps:0.34.3
    volumes: 
      - ./frps.ini:/etc/frp/frps.ini
    network_mode: host

log file

frps:

frps    | 2020/12/09 17:26:34 [I] [service.go:190] frps tcp listen on 0.0.0.0:8080
frps    | 2020/12/09 17:26:34 [I] [service.go:232] http service listen on 0.0.0.0:8080
frps    | 2020/12/09 17:26:34 [I] [root.go:215] start frps success
frps    | 2020/12/09 17:26:40 [I] [service.go:444] [3f3465ca6799f43c] client login info: ip [220.114.*.*:*] version [0.34.3] hostname [] os [windows] arch [amd64]
frps    | 2020/12/09 17:26:40 [I] [tcp.go:63] [3f3465ca6799f43c] [http_proxy] tcp proxy listen port [6000]
frps    | 2020/12/09 17:26:40 [I] [control.go:446] [3f3465ca6799f43c] new proxy [http_proxy] success
frps    | 2020/12/09 17:26:43 [W] [http.go:86] do http proxy request error: no such domain: www.baidu.com 
frps    | 2020/12/09 17:26:43 [W] [http.go:86] do http proxy request error: no such domain: www.baidu.com 
frps    | 2020/12/09 17:26:43 [W] [http.go:86] do http proxy request error: no such domain: www.baidu.com 
frps    | 2020/12/09 17:26:43 [W] [http.go:86] do http proxy request error: no such domain: www.baidu.com 
frps    | 2020/12/09 17:26:43 [W] [http.go:86] do http proxy request error: no such domain: www.baidu.com 
frps    | 2020/12/09 17:26:43 [W] [http.go:86] do http proxy request error: no such domain: www.baidu.com

frpc:

2020/12/10 01:26:39 [I] [service.go:288] [3f3465ca6799f43c] login to server success, get run id [3f3465ca6799f43c], server udp port [0]
2020/12/10 01:26:39 [I] [proxy_manager.go:144] [3f3465ca6799f43c] proxy added: [http_proxy]
2020/12/10 01:26:39 [I] [control.go:180] [3f3465ca6799f43c] [http_proxy] start proxy success

Steps to reproduce the issue

1. Setup as above my config
2. Use any other client device set mydomain.com:8080 as http proxy, In my case I use my iPhone.
3. Access baidu.com

Supplementary information

Can you guess what caused this issue

Checklist:

• [x] I included all information required in the sections above
• [x] I made sure there are no duplicates of this report (Use Search)

[yuyulei]

you make www.baidu.com (dns or /etc/hosts) resolved to the address of frps binding ? Then frps know nothing about www.baidu.com, because the domain is not in its configuration.

[GF-Huang]

you make www.baidu.com (dns or /etc/hosts) resolved to the address of frps binding ? Then frps know nothing about www.baidu.com, because the domain is not in its configuration.

No, I want the frpc acts a standard http proxy server, but it is behind NAT. Is this possible?

My intent is that using my home IP address to access some website when I'm not at home.

[yuyulei]

frp has no plan to support "standard http proxy", because some tools(like nginx)is good enough.

for your purpose, your can try frpc + nginx, just handle nginx as a tcp service, ref: https://github.com/fatedier/frp#access-your-computer-in-lan-by-ssh.

[fatedier]

@GF-Huang Try mydomain.com:6000

[GF-Huang]

@GF-Huang Try mydomain.com:6000

What the mean?

[yuyulei]

@GF-Huang Try mydomain.com:6000

What the mean?

"[http_proxy]" is tcp proxy, it make frps listens port: 6000 and put traffic to frpc's plugin: http_proxy.

"vhost_http_port" is for http proxy.

so the two will not share traffic, you just try

curl -x 'http://mydomain.com:6000' 'http://www.baidu.com'

[GF-Huang]

What's the equivalent of the follow command in browser? I set proxy explicit in my browser. The ba***.top is my mydomain.com in above config.

curl -x 'http://mydomain.com:6000' 'http://www.baidu.com'

[yuyulei]

What's the equivalent of the follow command in browser? I set proxy explicit in my browser. The ba***.top is my mydomain.com in above config.

curl -x 'http://mydomain.com:6000' 'http://www.baidu.com'

8080 -> 6000, use remote_port.

[GF-Huang]

It works! Thank you all. 🌹

[GF-Huang]

By the way, what difference between vhost_http_port and remote_port of [http_proxy]?

It's hard to understand.