Simple counting server

main.go

package main

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

func main() {
	var count int
	var countChan = make(chan bool) // unbuffered
	var resultChan = make(chan chan int)

	go func() {
		for {
			select {
			case <-countChan:
				count++
			case r := <-resultChan:
				r <- count
			}
		}
	}()

	http.HandleFunc("/", func(w http.ResponseWriter, r *http.Request) {
		countChan <- true
	})

	http.HandleFunc("/count", func(w http.ResponseWriter, r *http.Request) {
		answerChan := make(chan int)
		resultChan <- answerChan
		fmt.Fprintf(w, "Count %d\n", <-answerChan)
	})

	log.Fatal(http.ListenAndServe("localhost:8080", nil))
}