C# 在单独的线程上重用连接
我需要听一个开放的API,在正确的数据,我需要下载一些文件和处理它。我使用计时器每x秒自动发出一个下载请求,这使连接保持活动状态,因此可供重用 共有3个组成部分:C# 在单独的线程上重用连接,c#,multithreading,http,timer,keep-alive,C#,Multithreading,Http,Timer,Keep Alive,我需要听一个开放的API,在正确的数据,我需要下载一些文件和处理它。我使用计时器每x秒自动发出一个下载请求,这使连接保持活动状态,因此可供重用 共有3个组成部分: 父类 侦听器类 计时器 父类在单独的线程上生成侦听器,并启动计时器。计时器和侦听器都调用父对象上的委托 问题是,每次从计时器下载时,连接都会被重用(从下载时间可以明显看出),但当侦听器调用相同的连接时,连接就不会被重用 裸骨代码: using Timer = System.Timers.Timer; namespace Hallel
using Timer = System.Timers.Timer;
namespace Hallelujah
{
public delegate void downloadData(bool process, string url);
public delegate void downloadDataInvoker(bool process, string url);
class Listener2
{
downloadData _downloadData;
public void start(string storeID, string shoes)
{
ServicePointManager.DefaultConnectionLimit = 500;
ServicePointManager.Expect100Continue = false;
ServicePointManager.MaxServicePoints = 0;
_downloadData += new downloadData(downloadDataCb);
Timer timer = new Timer(10000);
timer.Elapsed += timer_Elapsed;
timer.Enabled = true;
Listen listenTool = new Listen();
listenTool._downloadData += new downloadDataInvoker(invoker);
Thread thread = new Thread(new ParameterizedThreadStart(listenTool.init));
string[] str = { params };
thread.Start(str);
F1.updateStatus(System.Threading.Thread.CurrentThread.ManagedThreadId.ToString());
}
void timer_Elapsed(object sender, ElapsedEventArgs e)
{
_downloadData.Invoke(false, "example.com");
}
public void invoker(bool process, string url)
{
_downloadData.Invoke(process, url);
}
public void downloadDataCb(bool process, string url)
{
F1.updateStatus(System.Threading.Thread.CurrentThread.ManagedThreadId.ToString());
HttpWebRequest req = (HttpWebRequest)WebRequest.Create(url);
req.KeepAlive = true;
req.ProtocolVersion = HttpVersion.Version10;
req.UnsafeAuthenticatedConnectionSharing = true;
req.Pipelined = true;
WebResponse res = req.GetResponse();
Stream sr = res.GetResponseStream();
//Reading response
if (process)
{
F1.updateStatus("Downloaded in " + t1.Seconds + " s " + t1.Milliseconds + "ms ");
}
else
F1.updateStatus("Downloaded NULL(from timer) in " + t1.Seconds + " s " + t1.Milliseconds + "ms ");
}
public void updateStatusCB(string status)
{
F1.updateStatus(status);
}
}
internal class Listen
{
public downloadDataInvoker _downloadDataInvoker;
public updateStatus _updateStatus;
public bool ToListen = true;
public void init(object objpass)
{
_updateStatus.Invoke(System.Threading.Thread.CurrentThread.ManagedThreadId.ToString());
while(ToListen){
//When a match is found
_downloadDataInvoker.Invoke(true, media_url);
}
}
}
知道为什么会这样吗?当计时器事件被调用时,您将创建一个新的保持活动请求
根据您的需要,有许多下载任务(通过用户id?),您可以为每个任务创建一个保持活动的请求,并异步开始请求,在回调事件中调用更新委托。我已编辑了您的标题。请看“”,其中的共识是“不,他们不应该”。谢谢!迈向成为一个更好的网民!