IHttpAsyncHandler和的IObservable Web请求
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25-09-2019 - |
题
在异步处理程序我创建从WebRequest的返回一个重定向字符串的的IObservable。
我订阅可观察和调用AsyncResult.CompleteCall(),但我被迫使用了Thread.Sleep(100),以得到它执行。而且它不工作每次。我敢肯定,这是不正确的。能否请你照的一些情况。谢谢!
public IAsyncResult BeginProcessRequest(HttpContext context, AsyncCallback cb, object state)
{
_context = context;
_ar = new AsyncResult(cb, state);
_tweet = context.Request["tweet"];
string url = context.Request["url"];
if(String.IsNullOrEmpty(_tweet) || String.IsNullOrEmpty(url))
{
DisplayError("<h2>Tweet or url cannot be empty</h2>");
return _ar;
}
_oAuth = new oAuthTwitterRx();
using (_oAuth.AuthorizationLinkGet().Subscribe(p =>
{
_context.Response.Redirect(p);
_ar.CompleteCall();
},
exception => DisplayError("<h2>Unable to connect to twitter, please try again</h2>")
))
return _ar;
}
public class AsyncResult : IAsyncResult
{
private AsyncCallback _cb;
private object _state;
private ManualResetEvent _event;
private bool _completed = false;
private object _lock = new object();
public AsyncResult(AsyncCallback cb, object state)
{
_cb = cb;
_state = state;
}
public Object AsyncState
{
get { return _state; }
}
public bool CompletedSynchronously
{
get { return false; }
}
public bool IsCompleted
{
get { return _completed; }
}
public WaitHandle AsyncWaitHandle
{
get
{
lock (_lock)
{
if (_event == null)
_event = new ManualResetEvent(IsCompleted);
return _event;
}
}
}
public void CompleteCall()
{
lock (_lock)
{
_completed = true;
if (_event != null)
_event.Set();
}
if (_cb != null)
_cb(this);
}
}
解决方案
更好晚然后从未;我想下面的文章解释正是你试图达到的目标:的 http://blogs.msdn.com/b/jeffva/archive/2010/09/15/rx-on-the-server -Part -5-的正观察的-ASP-net.aspx
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