Gin http: proxy error: dial tcp [::1]:3001: connect: connection refused

Description

I just setup the gin and test very basic GET request. However, server always throwing an error http: proxy error: dial tcp [::1]:3001: connect: connection refused and couldn't figure out whats wrong with my code.

How to reproduce

package main

import (
    "github.com/gin-gonic/gin"
)

func main() {
    r := gin.Default()
    r.GET("/", func(c *gin.Context) {
        c.JSON(200, gin.H{
            "message": "pong",
        })
    })
    r.Run()
}

Expectations

$ curl http://localhost:3000/
{"message":"pong"}

Actual result

$ curl http://localhost:3000/
Received nothing in response

Environment

• go version: 1.19.3 darwin/arm64
• gin version (or commit ref): v1.8.1
• operating system: M1 Macbook Pro

Comment From: liuliqiang

Hi @Aashir1 ,

I think there might be a proxy setting in your env, can you show the output for following command executed in your command line?

# env | grep -i http

Comment From: Aashir1

@liuliqiang

Comment From: mstmdev

Can you provide the GIN-debug log? If you are not setting up the PORT environment, the default port should be 8080, but you access the web server by 3000 port.

Comment From: Aashir1

SS after hitting on port 3000

and Yes, I have set the PORT=3000 in .env file. I think development mode is a Debug mode right? @mstmdev

Comment From: mstmdev

It looks like using github.com/codegangsta/gin to implement live-reloading. Please try to remove PORT=3000 in the .env file, because the default port of proxy server is 3000.

Comment From: mstmdev

Or maybe the /User/aashirkhan/go/bin/gin/main.go file is not your code. I execute the gin run main.go command in the $GOPATH/src/github.com/codegangsta/gin path, and get the same error.

root@pc:/mnt/e/workspace/gowork/src/github.com/codegangsta/gin$ ./gin run main.go
[gin] Listening on port 3000
[gin] Building...
[gin] Build finished
[gin] Listening on port 3000
[gin] Building...
2022/11/22 16:21:12 http: proxy error: dial tcp 127.0.0.1:3001: connect: connection refused

Comment From: Aashir1

It looks like using github.com/codegangsta/gin to implement live-reloading. Please try to remove PORT=3000 in the .env file, because the default port of proxy server is 3000. @Aashir1

It's working, I just removed PORT=3000 from .env file