[GH-ISSUE #3957] Reverse proxy a VPN or Fiddler connection reset by peer

gitea-mirror commented

2026-05-05 14:01:53 -06:00

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Originally created by @crazy-dragon on GitHub (Jan 29, 2024).
Original GitHub issue: https://github.com/fatedier/frp/issues/3957

Bug Description

Bug Description
I want to use frp to share a vpn with others and first I run a VPN in my client(computer or my phone) and run frpc, then in my aliyun server I run the frps. And, I use a third device config a http proxy. It can work and I can use google, but some website cannot access (such as www.v2ex.com, youtube can't play video), and browser says ERR_CONNECTION_RESET. I try to use fiddler replace a VPN, but the result is same.

And I found websites that cannot be accessed or display abnormally using the HTTP2 protocol. Here is two screenshots of my visits v2ex and google. One fail and One success.

frpc Version

0.53.2

frps Version

0.53.2

System Architecture

server: linux/amd64 client:windows/amd64

Configurations

serverAddr = "my.server.ip"
serverPort = 10020

proxies
name = "test-tcp"
type = "tcp"
localIP = "127.0.0.1"
localPort = 10809
remotePort = 10021

Logs

No response

Steps to reproduce

run a vpn or fiddler
run frps
run frpc
config proxy and access www.v2ex.com or youtube.

Affected area

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

Originally created by @crazy-dragon on GitHub (Jan 29, 2024). Original GitHub issue: https://github.com/fatedier/frp/issues/3957 ### Bug Description Bug Description I want to use frp to share a vpn with others and first I run a VPN in my client(computer or my phone) and run frpc, then in my aliyun server I run the frps. And, I use a third device config a http proxy. It can work and I can use google, but some website cannot access (such as www.v2ex.com, youtube can't play video), and browser says ERR_CONNECTION_RESET. I try to use fiddler replace a VPN, but the result is same. And I found websites that cannot be accessed or display abnormally using the HTTP2 protocol. Here is two screenshots of my visits v2ex and google. One fail and One success. ![qRvaf](https://github.com/fatedier/frp/assets/52905417/1026bc30-8241-4eca-9f8e-e3036bfc6dfa) ![4vGFP](https://github.com/fatedier/frp/assets/52905417/e9ca8b4e-35b4-437a-80ee-e51ad373e641) ### frpc Version 0.53.2 ### frps Version 0.53.2 ### System Architecture server: linux/amd64 client:windows/amd64 ### Configurations serverAddr = "my.server.ip" serverPort = 10020 [[proxies]] name = "test-tcp" type = "tcp" localIP = "127.0.0.1" localPort = 10809 remotePort = 10021 ### Logs _No response_ ### Steps to reproduce 1. run a vpn or fiddler 2. run frps 3. run frpc 4. config proxy and access www.v2ex.com or youtube. ### Affected area - [ ] Docs - [ ] Installation - [ ] Performance and Scalability - [ ] Security - [X] User Experience - [ ] Test and Release - [ ] Developer Infrastructure - [ ] Client Plugin - [ ] Server Plugin - [ ] Extensions - [ ] Others

gitea-mirror closed this issue

2026-05-05 14:01:54 -06:00

gitea-mirror commented

2026-05-05 14:01:56 -06:00

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@fatedier commented on GitHub (Jan 30, 2024):

For TCP proxy, frp simply forwards traffic without recognizing specific protocols. Therefore, if there are any issues, it is likely to be a problem at the application layer.

@fatedier commented on GitHub (Jan 30, 2024): For TCP proxy, frp simply forwards traffic without recognizing specific protocols. Therefore, if there are any issues, it is likely to be a problem at the application layer.

gitea-mirror commented

2026-05-05 14:01:57 -06:00

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@crazy-dragon commented on GitHub (Jan 30, 2024):

For TCP proxy, frp simply forwards traffic without recognizing specific protocols. Therefore, if there are any issues, it is likely to be a problem at the application layer.

OK, I also think it's may a problem at the application layer. So, thanks you for you reply.

@crazy-dragon commented on GitHub (Jan 30, 2024): > For TCP proxy, frp simply forwards traffic without recognizing specific protocols. Therefore, if there are any issues, it is likely to be a problem at the application layer. OK, I also think it's may a problem at the application layer. So, thanks you for you reply.

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