我正在使用以下 gcm 类发布数据以向大约 10,000 个 android 设备发送 gcm 通知：
class GCMandroid
{
private JArray RegIDs;
private string tickerText;
private string level;
private string id;
private string title;
private string message;
private string date;
public GCMandroid(List<string> Ids,string tickerText,string level,string id,
string title,string message,string date)
{
this.RegIDs = new JArray(Ids.ToArray());
this.tickerText = tickerText;
this.level = level;
this.id = id;
this.date = date;
this.title = title;
this.message = message;
}
public string GetPostData()
{
string postData =
"{ \"registration_ids\": " + this.RegIDs + ", " +
"\"time_to_live\":" + "43200" + ", " +
"\"collapse_key\":\"" + "Key" + "\", " +
"\"data\": {\"tickerText\":\"" + this.tickerText + "\", " +
"\"level\":\"" + this.level + "\", " +
"\"id\":\"" + this.id + "\", " +
"\"date\":\"" + this.date + "\", " +
"\"title\":\"" + this.title + "\", " +
"\"message\": \"" + this.message + "\"}}";
return postData;
}
public bool ValidateServerCertificate(object sender, X509Certificate certificate, X509Chain chain, SslPolicyErrors sslPolicyErrors)
{
return true;
}
public string SendGCMNotification(string apiKey, string postData, string postDataContentType = "application/json")
{
ServicePointManager.ServerCertificateValidationCallback += new RemoteCertificateValidationCallback(ValidateServerCertificate);
//
// MESSAGE CONTENT
byte[] byteArray = Encoding.UTF8.GetBytes(postData);
//
// CREATE REQUEST
HttpWebRequest Request = (HttpWebRequest)WebRequest.Create("https://android.googleapis.com/gcm/send");
Request.Method = "POST";
Request.KeepAlive = false;
Request.ContentType = postDataContentType;
Request.Headers.Add(string.Format("Authorization: key={0}", apiKey));
Request.ContentLength = byteArray.Length;
Stream dataStream = Request.GetRequestStream();
dataStream.Write(byteArray, 0, byteArray.Length);
dataStream.Close();
//
// SEND MESSAGE
try
{
WebResponse Response = Request.GetResponse();
HttpStatusCode ResponseCode = ((HttpWebResponse)Response).StatusCode;
if (ResponseCode.Equals(HttpStatusCode.Unauthorized) || ResponseCode.Equals(HttpStatusCode.Forbidden))
{
var text = "Unauthorized - need new token";
}
else if (!ResponseCode.Equals(HttpStatusCode.OK))
{
var text = "Response from web service isn't OK";
}
StreamReader Reader = new StreamReader(Response.GetResponseStream());
string responseLine = Reader.ReadToEnd();
Reader.Close();
Response.Close();
return responseLine;
}
catch (Exception e)
{
}
return "error";
}
}
这在包含计时器的 Windows 窗体中使用，如果后台工作人员不忙从数据库中获取数据并将其发送到大约 10,000 个调用的 Android 设备，则每 10 秒将打勾：
GCMandroid gcm = new GCMandroid(sublist, tickerText, level, id, title, message,date);
gcm.SendGCMNotification(AndroidApiKey, gcm.GetPostData());
每个sublist请求的 gcm 云配额最大为 1000。通知收到很好，但程序使用大量内存。
在尝试检测导致 ram 使用的项目主要部分（进程在 4 天内使用 2 GB 内存）时删除功能后，我发现发送通知导致此 ram 使用。
我使用 httpwebrequset 搜索了 ram 使用问题，但没有找到任何相关内容。我也尝试调用垃圾收集器，但它并没有清除大部分保留使用的所有内存；它仅清除所用总 RAM 内存的约 5%。任何人都可以帮助阻止这种大量内存使用。