System.Net.HttpClient.THTTPClient.BeginTrace

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Delphi 

function BeginTrace(const AURL: string; const AResponseContent: TStream = nil; const AHeaders: TNetHeaders = nil): IAsyncResult; overload;
function BeginTrace(const AsyncCallback: TAsyncCallback; const AURL: string; const AResponseContent: TStream = nil;  const AHeaders: TNetHeaders = nil): IAsyncResult; overload;
function BeginTrace(const AsyncCallbackEvent: TAsyncCallbackEvent; const AURL: string;  const AResponseContent: TStream = nil; const AHeaders: TNetHeaders = nil): IAsyncResult; overload;

C++ 

System::Types::_di_IAsyncResult __fastcall BeginTrace(const System::UnicodeString AURL, System::Classes::TStream* const AResponseContent = (System::Classes::TStream*)(0x0), const System::DynamicArray<System::Net::Urlclient::TNameValuePair> AHeaders = System::DynamicArray<System::Net::Urlclient::TNameValuePair>())/* overload */;
System::Types::_di_IAsyncResult __fastcall BeginTrace(const System::Classes::_di_TAsyncCallback AsyncCallback, const System::UnicodeString AURL, System::Classes::TStream* const AResponseContent = (System::Classes::TStream*)(0x0), const System::DynamicArray<System::Net::Urlclient::TNameValuePair> AHeaders = System::DynamicArray<System::Net::Urlclient::TNameValuePair>())/* overload */;
System::Types::_di_IAsyncResult __fastcall BeginTrace(const System::Classes::TAsyncProcedureEvent AsyncCallbackEvent, const System::UnicodeString AURL, System::Classes::TStream* const AResponseContent = (System::Classes::TStream*)(0x0), const System::DynamicArray<System::Net::Urlclient::TNameValuePair> AHeaders = System::DynamicArray<System::Net::Urlclient::TNameValuePair>())/* overload */;

Properties

Type Visibility Source Unit Parent
function public
System.Net.HttpClient.pas
System.Net.HTTPClient.hpp
 System.Net.HttpClient THTTPClient

Description

Starts an asynchronous HTTP request using the TRACE HTTP request method.

BeginTrace also receives the following parameters:

  • AURL is the target URL of your request.

  • AResponseContent (optional) is a stream where you want to receive the response data as your HTTP client downloads the response data from the target server.

    If you do not specify a stream for AResponseContent, you can wait for your HTTP client to download the whole response data, and obtain the response data as a stream from the ContentStream property of the asynchronous result object that BeginTrace returns.
  • AHeaders (optional) is a list of headers to include in the request.
  • AsyncCallback (optional) is a callback procedure to be called when a response is received or the request fails.
  • AsyncCallbackEvent (optional) is an event handler to be called when a response is received or the request fails.

For more information, see BeginExecute.

See Also

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