Delphi TIdHTTP POST与GET相比非常慢 [英] Delphi TIdHTTP POST is very slow vs GET

问题描述

Delphi 2009

Delphi 2009

我最近从多个GET请求切换到了一个POST，我认为这样做会更高效，但事实却要慢得多。它从1-2秒变为了8-10秒，我不知道为什么。

I recently switched from multiple GET requests to a single POST which I thought would be more efficient but it has turned out to be much slower. It went from 1-2 seconds to 8-10 seconds and I can't figure out why.

示例

unit Unit4;

interface

uses
  Windows, Messages, SysUtils, Variants, Classes, Graphics, Controls, Forms,
  Dialogs, StdCtrls, IdBaseComponent, IdComponent, IdTCPConnection, IdTCPClient,
  IdHTTP;

type
  TForm4 = class(TForm)
    d: TIdHTTP;
    Memo1: TMemo;
    Button1: TButton;
    procedure Button1Click(Sender: TObject);
  private
    { Private declarations }
  public
    { Public declarations }
  end;

var
  Form4: TForm4;

implementation

{$R *.dfm}

procedure TForm4.Button1Click(Sender: TObject);
var m: tmemorystream;
    data: tstringlist;
    i: integer;
begin
  memo1.Clear;

  m:=tmemorystream.Create;
  data:=tstringlist.Create;
  data.Add(format('test1');
  data.Add(format('test2');

  d.Post('http://www.someurl.com/test.php', data, m);
  m.Position:=0;
  data.LoadFromStream(m);
  memo1.Lines.Add('Received:');

  for i := 0 to data.count - 1 do
    memo1.Lines.Add(data[i]);

  m.Free;
  data.Free;
end;

end.

并在服务器上

<?php
echo "1\n";
?>

推荐答案

我使用不同的网址进行了简单的测试：

I did a simple test using different urls:

d.Post('http://whatismyip.org', data, m); // Using DNS name

或

d.Post('http://54.242.203.46', data, m); // Using IP

帖子花费了大约1秒钟的时间，因此我认为您的问题可能与Indy无关。我的建议：

The Post took ~1 sec, so I think your problem may not be connected with Indy. My suggestions:

• 检查PC的DNS解析。请尝试使用IP地址查看如果存在差异；


• 尝试使用外部工具（curl，vbscript等）向同一站点发出POST请求，并测量时间；


• 使用网络监视工具（Wireshark，MS网络监视器等）来查看服务器响应您的POST请求所花费的时间，或者客户端在解析地址和实际的Post请求之间所花费的时间。

这些步骤可以缩小问题所在。

These steps can narrow where the problem is.

如果上述所有方法均无效，请尝试将Indy升级到最新版本。

If none of these help - try upgrading Indy to the latest version.

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