import/path: Go Method Based Routing Not Existing on Go go1.23.1 darwin/arm64

[aghilann]

Go version

go version go1.23.1 darwin/arm64

Output of go env in your module/workspace:

GO111MODULE='on'
GOARCH='arm64'
GOBIN=''
GOCACHE='/Users/aghi/Library/Caches/go-build'
GOENV='/Users/aghi/Library/Application Support/go/env'
GOEXE=''
GOEXPERIMENT=''
GOFLAGS=''
GOHOSTARCH='arm64'
GOHOSTOS='darwin'
GOINSECURE=''
GOMODCACHE='/Users/aghi/go/pkg/mod'
GONOPROXY=''
GONOSUMDB=''
GOOS='darwin'
GOPATH='/Users/aghi/go'
GOPRIVATE=''
GOPROXY='https://proxy.golang.org,direct'
GOROOT='/opt/homebrew/opt/go/libexec'
GOSUMDB='sum.golang.org'
GOTMPDIR=''
GOTOOLCHAIN='local'
GOTOOLDIR='/opt/homebrew/opt/go/libexec/pkg/tool/darwin_arm64'
GOVCS=''
GOVERSION='go1.23.1'
GODEBUG=''
GOTELEMETRY='local'
GOTELEMETRYDIR='/Users/aghi/Library/Application Support/go/telemetry'
GCCGO='gccgo'
GOARM64='v8.0'
AR='ar'
CC='cc'
CXX='c++'
CGO_ENABLED='1'
GOMOD='/Users/aghi/GolandProjects/todo/go.mod'
GOWORK=''
CGO_CFLAGS='-O2 -g'
CGO_CPPFLAGS=''
CGO_CXXFLAGS='-O2 -g'
CGO_FFLAGS='-O2 -g'
CGO_LDFLAGS='-O2 -g'
PKG_CONFIG='pkg-config'
GOGCCFLAGS='-fPIC -arch arm64 -pthread -fno-caret-diagnostics -Qunused-arguments -fmessage-length=0 -ffile-prefix-map=/var/folders/0x/mnt5bhj17w3cwp4j6pxsp60c0000gn/T/go-build1231989599=/tmp/go-build -gno-record-gcc-switches -fno-common'

What did you do?

Try running

package main

import (
	"log"
	"net/http"
)

// Handler for POST requests to create a snippet.
func helloWorld(w http.ResponseWriter, r *http.Request) {
	_, err := w.Write([]byte("Hello, world!"))
	if err != nil {
		return
	}
}

func main() {
	mux := http.NewServeMux()

	// Use method-based routing for POST requests.
	mux.HandleFunc("GET /hello", helloWorld)

	log.Print("starting server on :4000")

	err := http.ListenAndServe(":4000", mux)
	log.Fatal(err)
}

and the server will be running, then visit http://localhost:4000/hello and you will see the 404 response. Occurs anytime I try to use Method bases routing, I verified using runtime as well I am running 1.23.

What did you see happen?

(base) aghi@Aghilans-MacBook-Pro todo % curl GET http://localhost:4000/hello
curl: (6) Could not resolve host: GET
404 page not found
(base) aghi@Aghilans-MacBook-Pro todo % 

What did you expect to see?

Hello World

[gabyhelp]

Related Issues and Documentation

• enhanced routing does not work on linux/debian12 #65746 (closed)
• net/http: enhanced ServerMux routing #65231 (closed)
• Support for HTTP OPTIONS Method in New String Pattern Matching for Handle and HandleFunc #69425 (closed)
• net/http.ServeMux: Enhanced routing patterns introduced in 1.22 do not work in 1.23 unless go mod has go version explicitly declared #69686 (closed)
• net/http: request.Method is wrong when path start by // #29584 (closed)
• x/website: #48672 (closed)
• http PATCH not responding #68404 (closed)
• net/http: Conflicts with pattern when using NewServeMux #68838 (closed)

_{(Emoji vote if this was helpful or unhelpful; more detailed feedback welcome in this discussion.)}

[aghilann]

Set version explicitly in go.mod to go 1.23

[aghilann]

I'm puzzled by an issue. During runtime, logging would previously fail even when displaying '1.23'. However, running fmt.Println(runtime.Version()) shows 'go1.23.1' without any changes to the go.mod file. Nevertheless, method-based routing fails. Adding the necessary change to the go.mod file resolves the issue. I'm unsure why this is the case.

[seankhliao]

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