golang mux HandleFunc always 404

Question

I try to handle HTTP request using mux instead of standart HandleFunc from net/http, because of reasons. With http it used to work, with mux it doesnt.

import (
    _ "github.com/go-sql-driver/mysql"
    "github.com/gorilla/mux"
    _ "io/ioutil"
    "net/http"
)


func init() {

    mx := mux.NewRouter()

    //create a poll
    mx.HandleFunc("/poll", pollCreate)
    mx.HandleFunc("/poll/{id}", loadPoll)
    mx.HandleFunc("/poll/vote", castVote)

    http.ListenAndServe(":8080", mx)
}

The following POST request

localhost:8080/poll

Results in:

INFO     2015-06-02 16:23:12,219 module.py:718] default: "POST /poll HTTP/1.1" 404 19

I can't reproduce this with a simple program (play.golang.org/p/9QQEkVED8i). Do you have a minimal, complete, verifiable test case that demonstrates the problem? — Rob Napier
– Rob Napier, Commented Jun 2, 2015 at 16:47
module.py suggests that you already have a python program listening to that port and your Go app failed to bind to the port — jcbwlkr
– jcbwlkr, Commented Jun 2, 2015 at 17:41

Thargor · Accepted Answer · 2015-06-02 16:49:26Z

3

Found solution.

Change

http.ListenAndServe(":8080", mx)

To

http.Handle("/", mx)

answered Jun 2, 2015 at 16:49

Thargor

7295 silver badges20 bronze badges

Sign up to request clarification or add additional context in comments.

1 Comment

heisenb0rg Over a year ago

This needs more of an explanation. You no longer specify the port to listen on, so... what's going on here?

Gaurav Sharma · Accepted Answer · 2020-01-26 18:03:23Z

0

You forgot to add the default handler. It's always better to keep the method along with the handlers.

 import (
        _ "github.com/go-sql-driver/mysql"
        "github.com/gorilla/mux"
        _ "io/ioutil"
        "net/http"
    )


func init() {

    mx := mux.NewRouter()

    //create a poll
    mx.Path("/").HandlerFunc(indexHandler)
    mx.PathPrefix("/poll", pollCreate).Method("POST)
    mx.PathPrefix("/poll/{id}", loadPoll)
    mx.PathPrefix("/poll/vote", castVote)

    http.ListenAndServe(":8080", mx)
}

answered Jan 26, 2020 at 18:03

Gaurav Sharma

4217 silver badges23 bronze badges

Collectives™ on Stack Overflow

golang mux HandleFunc always 404

2 Answers 2

1 Comment

Comments

Your Answer

Hot Network Questions

Collectives™ on Stack Overflow

2 Answers 2

1 Comment

Comments

Your Answer

Sign up or log in

Post as a guest

Related