1. go get github.com/googollee/go-gcm 2. go build TinyGCMServer.go 3. ./TinyGCMServer.go <API_KEY> <Server URL(:port)>

TinyGCMServer.go

// +build !appengine
package main

/*
 * Usage: ./TinyGCMServer <API_KEY> <Server URL(:port)>
 * Test: curl -d "<NOTIFICATION MESSAGE>" http://serverURL/sendMessage?target=<REGISTRATION_ID>
 */
import (
	"fmt"
	gcm "github.com/googollee/go-gcm"
	"io/ioutil"
	"net/http"
	"os"
)

var API_KEY string

func main() {
	serverURL := "localhost:8000"
	if len(os.Args) > 1 {
		API_KEY = os.Args[1]
		if len(os.Args) > 2 {
			serverURL = os.Args[2]
		}
		http.HandleFunc("/sendMessage", sendMessageHandler)
		fmt.Println("Notification server initialized.. : ", serverURL)
		fmt.Println("API Key : ", API_KEY)
		http.ListenAndServe(serverURL, nil)
	}
}

func sendMessageHandler(w http.ResponseWriter, r *http.Request) {
	if r.Method == "POST" {
		body, _ := ioutil.ReadAll(r.Body)
		target := r.FormValue("target")
		fmt.Fprintln(w, "target :", target)
		fmt.Fprintln(w, "body :", string(body))
		sendGCMNotification(target, string(body))
	}
}

func sendGCMNotification(target string, message string) {
	// API Key
	client := gcm.New(API_KEY)

	// client ID
	load := gcm.NewMessage(target)
	// load.AddRecipient("abc")
	load.SetPayload("data", message)
	// load.CollapseKey = "registerCar"
	load.DelayWhileIdle = true
	load.TimeToLive = 10

	resp, err := client.Send(load)

	fmt.Printf("id: %+v\n", resp)
	fmt.Println("err:", err)
	fmt.Println("err index:", resp.ErrorIndexes())
	fmt.Println("reg index:", resp.RefreshIndexes())
}

http://www.androidhive.info/2012/10/android-push-notifications-using-google-cloud-messaging-gcm-php-and-mysql/
그림 참조