Question

我正在使用Delphi XE6。

我已阅读以下所有内容：

Delphi: Why does IdHTTP.ConnectTimeout make requests slower?

我知道相关时间和性能因素包括： 1. HTTPOptions 2. TIdHttp.Request选项 - 内容类型，编码，尤其是连接超时设置。 3. iCsslIOHandler.SSLOptions.Method应选择正确的SSL版本进行身份验证

但是我的德尔福Xe6的TIdHttp.Post仍然比它应该慢很多，只有10倍。

你可以认为这些帖子是有效的 - 他们是。没有异常被抛出，虽然我写的日志文件中没有内容。

使用REST调用是否可能使这更快，因为http不应该是RPC？

根据下面的代码，是否有人有任何提示或见解（iC前缀变量是类范围，除非线程不拥有的互斥锁）：

procedure TVinterClientCall<T , I>.InitialiseHttpClient;
var
  vKey           : String;
  vPair          : TPair<String , String>;
  vDebugString   : string;
  vSocketHandler : TIdSSLIOHandlerSocketOpenSSL;
  vParamValue    : String;
begin
  // Setup the Http Client
  iChttpClient := TIdHttp.Create;
  // System.RegisterExpectedMemoryLeak(iChttpClient);

  with iChttpClient do
  begin
    HandleRedirects := True;
    // Here we set the API and protocol content type
    Request.ContentType := iCContentType;
    Request.Accept      := iCContentType;


    ConnectTimeout     := 0;
    HTTPOptions        := [hoForceEncodeParams , hoKeepOrigProtocol];
    Request.Connection := 'keep-alive';

    // Logically, this should be redundant. There is no reason why this property should revert due to response
    // data or conditions. However, this is to be certain.
    if hoWaitForUnexpectedData in HTTPOptions then
    begin
      HTTPOptions := HTTPOptions - [hoWaitForUnexpectedData];
    end;

    //This just gets some header values from the interface, no problem...
    for vKey in iCCustomHeaderParams.Keys do
    begin
      // vParamValue is an out parameter
      iCCustomHeaderParams.TryGetValue(vKey , vParamValue);
      Request.CustomHeaders.AddValue(vKey , vParamValue);

    end;
  end;

  iCsslIOHandler                   := TIdSSLIOHandlerSocketOpenSSL.Create(nil);
  iCsslIOHandler.SSLOptions.Method := sslvSSLv3; //**Is this right?**

  iChttpClient.IOHandler := iCsslIOHandler;

end;

// This is the currently used method.
procedure TVinterClientCall<T , I>.ExecuteCallMemStream;
const
  CRLF = #13#10;
var
  vStream                  : TMemoryStream;
  vParams                  : TMemoryStream;
  vResponse                : TMemoryStream;
  vRequestString           : string;
  vHeaderString            : string;
  vRequestStringStream     : TStringStream;
  vDisplayStreamDataString : String;
  vResponseData            : TStringStream;               // TidStream is Version 10.1.x. TMemoryStream may be better...
  vTimeStamps              : array [0 .. 1] of TDateTime; // Array of real;
  v64TimeStamps            : array [0 .. 1] of DWORD;     // int64;
  vDuration                : TDateTime;
  v64Duration              : DWORD;
  vHour                    : word;
  vMin                     : word;
  vSec                     : word;
  vMsec                    : word;
  vTimingLog               : TextFile;
  vBeforePostNow           : int64; // cardinal;
  vAfterPostNow            : int64; // cardinal;

  vPostTimes : TStringList;


begin

  vStream              := TMemoryStream.Create;
  vParams              := TMemoryStream.Create;
  iCResponse           := TMemoryStream.Create;
  vRequestStringStream := TStringStream.Create;
  vResponseData        := TStringStream.Create;
  vPostTimes           := TStringList.Create;

  InitialiseHttpClient();

  iCURL := iCEndPoint;


    try

      vRequestString := '{' + ProtocolParamsString + ',' + Method + ',' + DataParamString + '}';
      StringReplace(vRequestString , #13#10 , '' , [rfReplaceAll]);


      vRequestStringStream.WriteString(vRequestString);
      vDisplayStreamDataString := vRequestStringStream.DataString;

      iCRequestData := vDisplayStreamDataString;
      vParams.Write(vRequestString[1] , Length(vRequestString));

      with iChttpClient do
      begin
        try

          iCMxUtility.Acquire;
          v64TimeStamps[0] := timeGetTime(); // Now64();

          // vResponseData  := TStringStream.Create(Post(iCURL , vRequestStringStream));
          Post(iCURL , vRequestStringStream , vResponseData);

          v64TimeStamps[1] := timeGetTime(); // Now64();
          // vTimeStamps[1] := Now;
          iCMxUtility.Release;
          v64Duration := v64TimeStamps[1] - v64TimeStamps[0];
          // vDuration      := vTimeStamps[1] - vTimeStamps[0];

          // DecodeTime(vDuration , vHour , vMin , vSec , vMsec);

        except
          on E : Exception do
          begin
            iCMxUtility.Acquire;
            showmessage('Error encountered during POST: ' + E.Message);
            iCMxUtility.Release;
          end;

        end;
      end;

    finally


      iCMxLogFiles.Acquire;
      // Try to open the Test.txt file for writing to
      vPostTimes.SaveToFile('.\PostTimes_'+ StringReplace(TimeToStr(Now), ':', '', [rfReplaceAll]));

      iCMxLogFiles.Release;

      // Local variable scope Cleanup.
      FreeAndNil(vStream);
      FreeAndNil(vParams);
      FreeAndNil(iCResponse);
      FreeAndNil(vRequestStringStream);
      FreeAndNil(vResponseData);
      FreeAndNil(vPostTimes);

      ReleaseHttpClient;

    end;


end;

TIdHttp.Post响应时间太长

0 个答案: