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: / opt / golang / 1.22.0 / src / net / http /

Filename : example_handle_test.go

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// Copyright 2018 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.

package http_test

import (
	"fmt"
	"log"
	"net/http"
	"sync"
)

type countHandler struct {
	mu sync.Mutex // guards n
	n  int
}

func (h *countHandler) ServeHTTP(w http.ResponseWriter, r *http.Request) {
	h.mu.Lock()
	defer h.mu.Unlock()
	h.n++
	fmt.Fprintf(w, "count is %d\n", h.n)
}

func ExampleHandle() {
	http.Handle("/count", new(countHandler))
	log.Fatal(http.ListenAndServe(":8080", nil))
}