有没有办法为Indy Tidhttp获取设置响应超时？ [英] Is there a way to set response timeout for Indy Tidhttp gets?

问题描述

我已经使用Indy TIdhttp组件构建了一个简单的网站监控应用程序。我想检测指定的页面何时在指定的时间范围内没有返回（我正在使用5000毫秒）。作为测试，我在网站上创建了一个有意需要15秒的响应的页面。但是5秒钟后我无法让我的程序放弃。我尝试了 ReadTimeout ，建议的解决方案使用一个计时器和 OnWorkBegin 事件（从来没有得到 OnWorkBegin 在get调用后立即触发）。

注意我不担心连接超时。我关心的是服务器返回页面的超时时间。

这是我一直在使用的一些源代码。它包含许多我引用的元素。

  procedure TServLogic.WorkBegin（ASender：TObject; AWorkMode：TWorkMode; AWorkCountMax：Int64） ; 
 begin 
 GetTimer.Enabled：= True; 
结束
 procedure TServLogic.WorkEnd（ASender：TObject; AWorkMode：TWorkMode）; 
 begin 
 GetTimer.Enabled：= False; 
结束
 
程序TServLogic.GetTimerTimer（Sender：TObject）; 
 begin 
 idHttp.Disconnect（True）; 
结束
 
程序TServLogic.CallHttp（mlink：String）：String; 
 begin 
 result：=''; 
 GetTimer：= TTimer.create（nil）; 
 GetTimer.OnTimer：= GetTimerTimer; 
 GetTimer.Interval：= 5000; 
 try 
 IdHTTP：= TIdHTTP.create（nil）; 
 idhttp.ReadTimeout：= 5000; 
 IdHttp.OnWorkBegin：= WorkBegin; 
 IdHttp.OnWorkEnd：= WorkEnd; 
 try 
 result：= idhttp.get（mLink）; 
除了
对e：exception do begin 
 AppendToLog（'Server没有响应5秒'）; 
结束
结束
 finally 
 GetTimer.Free; 
 idhttp.free; 
结束
结束
  

解决方案

我最终根据Rob的评论得到答案肯尼迪我多次尝试联络他，要求他提出一个正式的答复，以便我可以给他投票。从来没有听说过。

I have built a simple website monitoring application using Indy TIdhttp component. I want to detect when a designated page is not returned within a specified time frame (I am using 5000 milliseconds). As a test I created a page on a web site which intentionally takes 15 seconds to respond. But I can't get my procedure to "give up" after the 5 seconds. I have tried ReadTimeout, a suggested solution using a timer and the OnWorkBegin event (was never able to get OnWorkBegin to fire immediately after the get call).

Note I am not worried about a connection timeout. My concern here is a timeout for the server to return with a page.

Here is some source code I have been using. It contains many of the elements I reference.

procedure TServLogic.WorkBegin(ASender: TObject; AWorkMode: TWorkMode; AWorkCountMax: Int64);
begin
  GetTimer.Enabled := True;
end;
procedure TServLogic.WorkEnd(ASender: TObject; AWorkMode: TWorkMode);
begin
  GetTimer.Enabled := False;
end;

procedure TServLogic.GetTimerTimer(Sender: TObject);
begin
  idHttp.Disconnect(True);
end;

procedure TServLogic.CallHttp(mlink: String): String;
begin
  result := '';
  GetTimer := TTimer.create(nil);
  GetTimer.OnTimer := GetTimerTimer;
  GetTimer.Interval := 5000;
  try
    IdHTTP := TIdHTTP.create(nil);
    idhttp.ReadTimeout := 5000;
    IdHttp.OnWorkBegin := WorkBegin;
    IdHttp.OnWorkEnd   := WorkEnd;
    try
      result  := idhttp.get(mLink);
    except
      on e:exception do begin
        AppendToLog('Server did not respond withing 5 seconds');
      end;
    end;
  finally
    GetTimer.Free;
    idhttp.free;
  end;
end;

解决方案

I eventually got the answer based on the comments of Rob Kennedy. I tried numerous times to contact him and request he make a "formal" answer so that I could give him the vote. Never heard back.

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