Authentification on HTTP proxy in Delphi XE

问题:

I need a little help:

uses wininet, urlmon;
....

var proxy_info : PInternetProxyInfo;
....

begin
  user:='mycooluser';
  pass:='mycoolpass';
  UserAgent:='MSIE';
  New (proxy_info);
  proxy_info^.dwAccessType := INTERNET_OPEN_TYPE_PROXY;
  proxy_info^.lpszProxy := PAnsiChar('XXX.XXX.XXX.XXX:ZZZZ');
  proxy_info^.lpszProxyBypass := PAnsiChar('');
  UrlMkSetSessionOption(INTERNET_OPTION_PROXY_USERNAME, PAnsichar(user), Length(user)+1, 0);
  UrlMkSetSessionOption(INTERNET_OPTION_PROXY_PASSWORD, PAnsichar(pass), Length(pass)+1, 0);
  UrlMkSetSessionOption(URLMON_OPTION_USERAGENT, PChar(UserAgent), Length(UserAgent)+1, 0);
  UrlMkSetSessionOption(INTERNET_OPTION_PROXY, proxy_info, SizeOf(Internet_Proxy_Info), 0);
  Dispose(proxy_info);

  EmbeddedWB1.Navigate('http://2ip.ru');
end;

But it's doesn't work, although this proxy 100% working if its just specify in the IE settings.

回答1:

unit Unit1;

// Code By Alireza Talebi  , asiapardaz.blogfa.com  ,  [e-mail]
interface

uses
  Windows, Messages, SysUtils, Variants, Classes, Graphics, Controls, Forms,
  Dialogs, urlmon, wininet, StdCtrls, OleCtrls, SHDocVw, ExtCtrls;

type
  TForm1 = class(TForm)
    Button1: TButton;
    Edit1: TEdit; // Proxy Address
    Edit2: TEdit; // Port
    Edit3: TEdit; // Web Address
    WebBrowser1: TWebBrowser;
    procedure Button1Click(Sender: TObject);
  private
    { Private declarations }
  public
    { Public declarations }
  end;

var
  Form1: TForm1;
  i:Integer;
implementation

{$R *.dfm}

procedure proxy(text:string);
var PIInfo: PInternetProxyInfo;
begin
New(PIInfo);
PIInfo^.dwAccessType := INTERNET_OPEN_TYPE_PROXY;
PIInfo^.lpszProxy:=(PAnsiChar(text));
PIInfo^.lpszProxyBypass := PChar('');
UrlMkSetSessionOption(INTERNET_OPTION_PROXY, piinfo, SizeOf(Internet_Proxy_Info), 0);
Dispose(PIInfo);
end;

procedure DeleteIECache;
var
  lpEntryInfo: PInternetCacheEntryInfo;
  hCacheDir: LongWord;
  dwEntrySize: LongWord;
begin
  dwEntrySize := 0;
  FindFirstUrlCacheEntry(nil, TInternetCacheEntryInfo(nil^), dwEntrySize);
  GetMem(lpEntryInfo, dwEntrySize);
  if dwEntrySize > 0 then lpEntryInfo^.dwStructSize := dwEntrySize;
  hCacheDir := FindFirstUrlCacheEntry(nil, lpEntryInfo^, dwEntrySize);
  if hCacheDir <> 0 then 
  begin
    repeat
      DeleteUrlCacheEntry(lpEntryInfo^.lpszSourceUrlName);
      FreeMem(lpEntryInfo, dwEntrySize);
      dwEntrySize := 0;
      FindNextUrlCacheEntry(hCacheDir, TInternetCacheEntryInfo(nil^), dwEntrySize);
      GetMem(lpEntryInfo, dwEntrySize);
      if dwEntrySize > 0 then lpEntryInfo^.dwStructSize := dwEntrySize;
    until not FindNextUrlCacheEntry(hCacheDir, lpEntryInfo^, dwEntrySize);
  end;
  FreeMem(lpEntryInfo, dwEntrySize);
  FindCloseUrlCache(hCacheDir);
end;

procedure EndBrowserSession;
begin
  InternetSetOption(nil, INTERNET_OPTION_END_BROWSER_SESSION, nil, 0);
end;

procedure TForm1.Button1Click(Sender: TObject);
begin
DeleteIECache;
EndBrowserSession;
proxy(Trim(Edit1.Text)+':'+Trim(Edit2.Text)); // Proxy:Port
WebBrowser1.Navigate(Trim(Edit3.Text));
end;

end.