我使用我的Android应用程序的谷歌云端通讯(GCM)服务。我已经按照所有规则实施了它,并且工作正常。好吧,差不多。发送GCM消息(服务器端)经常会失败 - 但远总是
大多数情况下,我在的情况下,60-70%的人说,我可以成功地从我的服务器发送GCM消息,使用web服务对谷歌的网页所讨论的。
通常情况下,我从web服务,这表明我成功发送的GCM消息答复如下:
{
"multicast_id":8378088572050307085,
"success":1,
"failure":0,
"canonical_ids":0,
"results":
[
{
"message_id":"0:1363080282442710%7c4250c100000031"
}
]
}
这话说:一切OK,消息中发送。
然而,在许多情况下,我调用webservice时得到一个HTTP错误,上面写着:
无法读取传输连接的数据:已建立 连接被软件在主机中止。
这是.NET消息告诉我调用Web服务(使用HttpWebRequest和POST)失败。
这是一些日志信息,显示的问题:
这是我使用的用于调用WS代码:
public static string SendMessage(string registrationId, string command, string extra, bool retry)
{
try
{
HttpWebRequest request = (HttpWebRequest)WebRequest.Create("https://android.googleapis.com/gcm/send");
request.Method = PostWebRequest;
request.KeepAlive = false;
GCMPostPacket json = new GCMPostPacket()
{
collapse_key = "1",
time_to_live = 60,
registration_ids = new List<string>(new string[] { registrationId }),
data = new GcmData()
{
message = command,
misc = extra
}
};
// Converting to JSON string
string jsonString = SICJsonProtocol.JSONHelper.Serialize<GCMPostPacket>(json);
byte[] byteArray = Encoding.UTF8.GetBytes(jsonString);
request.ContentType = "application/json";
request.ContentLength = byteArray.Length;
request.ProtocolVersion = HttpVersion.Version10;
request.Headers.Add(HttpRequestHeader.Authorization, "key=" + "MyVerySecretKey");
Stream dataStream = request.GetRequestStream();
dataStream.Write(byteArray, 0, byteArray.Length);
dataStream.Close();
using (WebResponse response = request.GetResponse())
{
HttpStatusCode responseCode = ((HttpWebResponse)response).StatusCode;
if (responseCode.Equals(HttpStatusCode.Unauthorized) || responseCode.Equals(HttpStatusCode.Forbidden))
{
Console.WriteLine("Unauthorized - need new token");
}
else if (!responseCode.Equals(HttpStatusCode.OK))
{
Console.WriteLine("Response from web service not OK :");
Console.WriteLine(((HttpWebResponse)response).StatusDescription);
}
StreamReader reader = new StreamReader(response.GetResponseStream());
string responseLine = reader.ReadLine();
Console.WriteLine("************************");
Console.WriteLine("GCM send: " + responseCode + " | " + responseLine);
// This is the log shown in the image above
SRef.main.gui.ServiceUpdate("GCM send: " + responseCode + " | " + responseLine);
reader.Close();
response.Close();
return responseLine;
}
}
catch (Exception e)
{
// This is the log shown in the image above
SRef.main.gui.ServiceUpdate("Failed send GCM, " + (retry ? "retrying in 20 sec" : "not retrying") + ". Error=" + e.Message);
if (retry)
{
System.Threading.ThreadPool.QueueUserWorkItem(delegate(object obj)
{
try
{
System.Threading.Thread.Sleep(20000);
SendMessage(registrationId, command, extra, false);
}
catch (Exception ex)
{
}
});
}
return null;
}
}
任何人都可以看到,如果我做的事情错误的,或者如果我缺少一些一般的东西?
是否可以在外部catch-block内记录'e'的值?它可能包含有用的信息。 – Nachi 2013-03-19 14:03:55
当然,我会补充一点,看看它是否有帮助 – Ted 2013-03-20 20:32:03
其实,它已经在那里。 e.Message写在输出中,这就是你看到的错误信息...... * +“。Error =”+ e.Message); * – Ted 2013-03-20 21:14:43