Jake's BLOG

最近のIT技術動向と社会問題など・・・・

Androidの非同期通知機能 Google Cloud Messaging (GCM) のサーバー側コードをC#で書いてみた

.NETの標準以外に Newtonsoft のJSON.NETを使用します。http://james.newtonking.com/pages/json-net.aspx
使い方は

    var container = new Google.GoogleCloudMessaging.Container {
        RegistrationIds = new String [] { "APA*******PQZQ" },
        Data = new { message = "Hello World!" }
    };
    var response = Google.GoogleCloudMessaging.Broadcast( "AIz************", container );

のようになります。

------------------------------

 

using System;
using System.Net;

using Newtonsoft.Json;

namespace Google
{
    public class GoogleCloudMessaging
    {
        public class Container
        {
            [JsonProperty("registration_ids")]
            public String[] RegistrationIds { get; set; }
            [JsonProperty("collapse_key", NullValueHandling=NullValueHandling.Ignore )]
            public String CollapseKey { get; set; }
            [JsonProperty("data", NullValueHandling = NullValueHandling.Ignore)]
            public object Data { get; set; }
            [JsonProperty("delay_while_idle", NullValueHandling = NullValueHandling.Ignore)]
            public Boolean? DelayWhileIdle { get; set; }
            [JsonProperty("time_to_live", NullValueHandling = NullValueHandling.Ignore)]
            public int? TimeToLive { get; set; }
            [JsonProperty("restricted_package_name", NullValueHandling = NullValueHandling.Ignore)]
            public String RestrictedPackageName { get; set; }
            [JsonProperty("dry_run", NullValueHandling = NullValueHandling.Ignore)]
            public Boolean? DryRun { get; set; }
        }
        public class Response
        {
            [JsonProperty("multicast_id")]
            public String MulticastId { get; set; }
            [JsonProperty("success")]
            public int Success { get; set; }
            [JsonProperty("failure")]
            public int Failure { get; set; }
            [JsonProperty("canonical_ids")]
            public int CanonicalIds { get; set; }
            [JsonProperty("results")]
            public Result[] Results { get; set; }
        }
        public class Result
        {
            [JsonProperty("message_id")]
            public String MessageId { get; set; }
            [JsonProperty("registration_id")]
            public String RegistrationId { get; set; }
            [JsonProperty("error")]
            public String Error { get; set; }
        }
        static public Response Broadcast(String API_KEY, Container container)
        {
            var request = WebRequest.Create("https://android.googleapis.com/gcm/send");
            var json = Newtonsoft.Json.JsonConvert.SerializeObject(container);
            using( WebClient web = new WebClient()){
                web.Headers.Add("Authorization", "key=" + API_KEY );
                web.Headers.Add("Content-Type", "application/json");
                byte[] result = web.UploadData("https://android.googleapis.com/gcm/send", "POST", System.Text.Encoding.UTF8.GetBytes(json) );
                String resultString = System.Text.Encoding.UTF8.GetString(result);
                var response = Newtonsoft.Json.JsonConvert.DeserializeObject<Response>( resultString );
                return response;
            }
        }
    }
}

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