public void SendNotification(INotification notification, SendNotificationCallbackDelegate callback)
{
var msg = notification as GcmNotification;
var result = new GcmMessageTransportResponse();
result.Message = msg;
//var postData = msg.GetJson();
var webReq = (HttpWebRequest)WebRequest.Create(gcmSettings.GcmUrl);
//webReq.ContentLength = postData.Length;
webReq.Method = "POST";
webReq.ContentType = "application/json";
//webReq.ContentType = "application/x-www-form-urlencoded;charset=UTF-8 can be used for plaintext bodies
webReq.UserAgent = "PushSharp (version: " + assemblyVerison.ToString() + ")";
webReq.Headers.Add("Authorization: key=" + gcmSettings.SenderAuthToken);
webReq.BeginGetRequestStream(new AsyncCallback(requestStreamCallback), new GcmAsyncParameters()
{
Callback = callback,
WebRequest = webReq,
WebResponse = null,
Message = msg,
SenderAuthToken = gcmSettings.SenderAuthToken,
SenderId = gcmSettings.SenderID,
ApplicationId = gcmSettings.ApplicationIdPackageName
});
}
public static GcmNotification ForSingleResult(GcmMessageTransportResponse response, int resultIndex)
{
var result = new GcmNotification();
result.Tag = response.Message.Tag;
result.RegistrationIds.Add(response.Message.RegistrationIds[resultIndex]);
result.CollapseKey = response.Message.CollapseKey;
result.JsonData = response.Message.JsonData;
result.DelayWhileIdle = response.Message.DelayWhileIdle;
return(result);
}
public GcmMessageTransportException(string message, GcmMessageTransportResponse response)
: base(message)
{
this.Response = response;
}
public GcmServiceUnavailableTransportException(TimeSpan retryAfter, GcmMessageTransportResponse response)
: base("Service Temporarily Unavailable. Please wait the retryAfter amount and implement an Exponential Backoff", response)
{
this.RetryAfter = retryAfter;
}
public GcmAuthenticationErrorTransportException(GcmMessageTransportResponse response)
: base("Authentication Failed", response)
{
}
public GcmBadRequestTransportException(GcmMessageTransportResponse response)
: base("Bad Request or Malformed JSON", response)
{
}
void processResponseError(GcmAsyncParameters asyncParam)
{
try
{
var result = new GcmMessageTransportResponse();
result.ResponseCode = GcmMessageTransportResponseCode.Error;
if (asyncParam == null || asyncParam.WebResponse == null)
{
throw new GcmMessageTransportException("Unknown Transport Error", result);
}
int statusCode = (int)asyncParam.WebResponse.StatusCode;
if (asyncParam.WebResponse.StatusCode == HttpStatusCode.Unauthorized)
{
//401 bad auth token
result.ResponseCode = GcmMessageTransportResponseCode.InvalidAuthToken;
throw new GcmAuthenticationErrorTransportException(result);
}
else if (asyncParam.WebResponse.StatusCode == HttpStatusCode.BadRequest)
{
result.ResponseCode = GcmMessageTransportResponseCode.BadRequest;
throw new GcmBadRequestTransportException(result);
}
else if (statusCode >= 500 && statusCode < 600)
{
//First try grabbing the retry-after header and parsing it.
TimeSpan retryAfter = new TimeSpan(0, 0, 120);
var wrRetryAfter = asyncParam.WebResponse.GetResponseHeader("Retry-After");
if (!string.IsNullOrEmpty(wrRetryAfter))
{
DateTime wrRetryAfterDate = DateTime.UtcNow;
if (DateTime.TryParse(wrRetryAfter, out wrRetryAfterDate))
{
retryAfter = wrRetryAfterDate - DateTime.UtcNow;
}
else
{
int wrRetryAfterSeconds = 120;
if (int.TryParse(wrRetryAfter, out wrRetryAfterSeconds))
{
retryAfter = new TimeSpan(0, 0, wrRetryAfterSeconds);
}
}
}
//Compatability for apps written with previous versions of PushSharp.
if (asyncParam.WebResponse.StatusCode == HttpStatusCode.InternalServerError)
{
result.ResponseCode = GcmMessageTransportResponseCode.InternalServiceError;
}
else
{
//503 exponential backoff, get retry-after header
result.ResponseCode = GcmMessageTransportResponseCode.ServiceUnavailable;
}
throw new GcmServiceUnavailableTransportException(retryAfter, result);
}
throw new GcmMessageTransportException("Unknown Transport Error", result);
}
finally
{
if (asyncParam != null && asyncParam.WebResponse != null)
{
asyncParam.WebResponse.Close();
}
}
}
void processResponseOk(GcmAsyncParameters asyncParam)
{
var result = new GcmMessageTransportResponse()
{
ResponseCode = GcmMessageTransportResponseCode.Ok,
Message = asyncParam.Message
};
//Get the response body
var json = new JObject();
var str = string.Empty;
try { str = (new StreamReader(asyncParam.WebResponse.GetResponseStream())).ReadToEnd(); }
catch { }
try { json = JObject.Parse(str); }
catch { }
result.NumberOfCanonicalIds = json.Value <long>("canonical_ids");
result.NumberOfFailures = json.Value <long>("failure");
result.NumberOfSuccesses = json.Value <long>("success");
var jsonResults = json["results"] as JArray;
if (jsonResults == null)
{
jsonResults = new JArray();
}
foreach (var r in jsonResults)
{
var msgResult = new GcmMessageResult();
msgResult.MessageId = r.Value <string>("message_id");
msgResult.CanonicalRegistrationId = r.Value <string>("registration_id");
msgResult.ResponseStatus = GcmMessageTransportResponseStatus.Ok;
if (!string.IsNullOrEmpty(msgResult.CanonicalRegistrationId))
{
msgResult.ResponseStatus = GcmMessageTransportResponseStatus.CanonicalRegistrationId;
}
else if (r["error"] != null)
{
var err = r.Value <string>("error") ?? "";
switch (err.ToLowerInvariant().Trim())
{
case "ok":
msgResult.ResponseStatus = GcmMessageTransportResponseStatus.Ok;
break;
case "missingregistration":
msgResult.ResponseStatus = GcmMessageTransportResponseStatus.MissingRegistrationId;
break;
case "unavailable":
msgResult.ResponseStatus = GcmMessageTransportResponseStatus.Unavailable;
break;
case "notregistered":
msgResult.ResponseStatus = GcmMessageTransportResponseStatus.NotRegistered;
break;
case "invalidregistration":
msgResult.ResponseStatus = GcmMessageTransportResponseStatus.InvalidRegistration;
break;
case "mismatchsenderid":
msgResult.ResponseStatus = GcmMessageTransportResponseStatus.MismatchSenderId;
break;
case "messagetoobig":
msgResult.ResponseStatus = GcmMessageTransportResponseStatus.MessageTooBig;
break;
case "invaliddatakey":
msgResult.ResponseStatus = GcmMessageTransportResponseStatus.InvalidDataKey;
break;
case "invalidttl":
msgResult.ResponseStatus = GcmMessageTransportResponseStatus.InvalidTtl;
break;
case "internalservererror":
msgResult.ResponseStatus = GcmMessageTransportResponseStatus.InternalServerError;
break;
default:
msgResult.ResponseStatus = GcmMessageTransportResponseStatus.Error;
break;
}
}
result.Results.Add(msgResult);
}
asyncParam.WebResponse.Close();
int index = 0;
var response = result;
//Loop through every result in the response
// We will raise events for each individual result so that the consumer of the library
// can deal with individual registrationid's for the notification
foreach (var r in response.Results)
{
var singleResultNotification = GcmNotification.ForSingleResult(response, index);
if (r.ResponseStatus == GcmMessageTransportResponseStatus.Ok)
{
//It worked! Raise success
asyncParam.Callback(this, new SendNotificationResult(singleResultNotification));
}
else if (r.ResponseStatus == GcmMessageTransportResponseStatus.CanonicalRegistrationId)
{
//Swap Registrations Id's
var newRegistrationId = r.CanonicalRegistrationId;
var oldRegistrationId = string.Empty;
if (singleResultNotification.RegistrationIds != null && singleResultNotification.RegistrationIds.Count > 0)
{
oldRegistrationId = singleResultNotification.RegistrationIds[0];
}
asyncParam.Callback(this, new SendNotificationResult(singleResultNotification, false, new DeviceSubscriptonExpiredException())
{
OldSubscriptionId = oldRegistrationId, NewSubscriptionId = newRegistrationId, IsSubscriptionExpired = true
});
}
else if (r.ResponseStatus == GcmMessageTransportResponseStatus.Unavailable)
{
asyncParam.Callback(this, new SendNotificationResult(singleResultNotification, true, new Exception("Unavailable Response Status")));
}
else if (r.ResponseStatus == GcmMessageTransportResponseStatus.NotRegistered)
{
var oldRegistrationId = string.Empty;
if (singleResultNotification.RegistrationIds != null && singleResultNotification.RegistrationIds.Count > 0)
{
oldRegistrationId = singleResultNotification.RegistrationIds[0];
}
//Raise failure and device expired
asyncParam.Callback(this, new SendNotificationResult(singleResultNotification, false, new DeviceSubscriptonExpiredException())
{
OldSubscriptionId = oldRegistrationId, IsSubscriptionExpired = true, SubscriptionExpiryUtc = DateTime.UtcNow
});
}
else
{
//Raise failure, for unknown reason
asyncParam.Callback(this, new SendNotificationResult(singleResultNotification, false, new GcmMessageTransportException(r.ResponseStatus.ToString(), response)));
}
index++;
}
Interlocked.Decrement(ref waitCounter);
}
