使用ClientSocket控件实现CSDN论坛帖子的自动回复

    写此文章的目的不是要鼓励大家恶意灌水，而是要了解Http头信息传输的机制及Cookie的一些知识，讲之前大家先看一下下面我在CSDN所截获的回复帖子的Http包信息内容：

typestate=1&Point=0&TopicName=%B7%A2%CC%F9%B2%E2%CA%D4%A3%AC%CF%D0%C8%CB%CE%F0%BD%F8%A3%A1&Room=1404&Content=rt

//Point：分数0  TopicName：文章标题：发贴测试，闲人勿进！是经过unicode编码的   Content：内容： rt  上面是传递的参数

10.104.9.30(1062)->          //发送方ip及端口

10.104.9.30(80)                //接受方IP及端口
POST /Expert/PostNew_SQL.asp HTTP/1.1           //接受页面及HTTP版本
Accept: image/gif, image/x-xbitmap, image/jpeg, image/pjpeg, application/vnd.ms-Powerpoint, application/vnd.ms-Excel, application/msWord, application/x-shockwave-Flash, */* 
Referer: http://expert.csdn.net/Expert/PostNew.asp?room=1404        //提交的地址
Accept-Language: zh-cn     //中文语言
Content-Type: application/x-www-form-urlencoded
Accept-Encoding: gzip, deflate            //接受压缩格式类型
User-Agent: Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.0)      //用户环境
Host: expert.csdn.net                       //主机名称
Content-Length: 111                       //长度：111
Connection: Keep-Alive                  //保持激活状态
Cache-Control: no-cache               //没有使用缓存
Cookie: remenber=0; ASPsessionIDAAATSBBS=POHKDGIBFHAMPECBCDHIHBCD; room=0; username=dashi888; speaknum=0; speaktime=2003%2D5%2D15+11%3A56%3A34; adminok=True; userid=487815; info1=0; m%5Ftype=1; aszx=0a727a0323230cd62e4cf5326besba01; mid=476831      //COOKIE的内容

注：用户的Cookie是经过32位加密的，我们要先构造自己要发送的Http包信息

截图如下：

下面是代码部分：

unit submit;

interface

uses
  Windows, Messages, SysUtils, Classes, Graphics, Controls, Forms, Dialogs,
  ScktComp, NMURL, StdCtrls, ComCtrls, ExtCtrls;

type
  TForm1 = class(TForm)
    url: TNMURL;
    ClientSocket1: TClientSocket;
    Label1: TLabel;
    Label2: TLabel;
    Label3: TLabel;
    Edit1: TEdit;
    Edit2: TEdit;
    Edit3: TEdit;
    Label4: TLabel;
    Edit4: TEdit;
    Label5: TLabel;
    Button1: TButton;
    Button2: TButton;
    StatusBar1: TStatusBar;
    memo2: TMemo;
    Memo1: TMemo;
    Label6: TLabel;
    Label7: TLabel;
    Label8: TLabel;
    Edit5: TEdit;
    Edit6: TEdit;
    Label9: TLabel;
    Edit7: TEdit;
    Button3: TButton;
    Timer1: TTimer;
    Button4: TButton;
    Timer2: TTimer;
    Button5: TButton;
    PRocedure Button1Click(Sender: TObject);
    procedure ClientSocket1Error(Sender: TObject; Socket: TCustomWinSocket;
      ErrorEvent: TErrorEvent; var ErrorCode: Integer);
    procedure ClientSocket1Read(Sender: TObject; Socket: TCustomWinSocket);
    procedure Button2Click(Sender: TObject);
    procedure Edit4KeyPress(Sender: TObject; var Key: Char);
    procedure Edit5KeyPress(Sender: TObject; var Key: Char);
    procedure Edit6KeyPress(Sender: TObject; var Key: Char);
    procedure Edit7KeyPress(Sender: TObject; var Key: Char);
    procedure Timer1Timer(Sender: TObject);
    procedure Button3Click(Sender: TObject);
    procedure Button4Click(Sender: TObject);
    procedure Timer2Timer(Sender: TObject);
    procedure ClientSocket1Connect(Sender: TObject;
      Socket: TCustomWinSocket);
    procedure FormShow(Sender: TObject);
    procedure Button5Click(Sender: TObject);
  private
    { Private declarations }
    TopicID,StartID,EndID:integer;
    DelayTime :integer;
    succ :boolean;
    procedure SendData();
    procedure BuildHttpHead();
  public
    { Public declarations }
  end;

var
  Form1: TForm1;

implementation

{$R *.DFM}

procedure TForm1.Button1Click(Sender: TObject);
begin
 clientsocket1.Active :=true;
 Button1.Enabled :=false;
 BuildHttpHead();
end;

procedure TForm1.ClientSocket1Error(Sender: TObject;
  Socket: TCustomWinSocket; ErrorEvent: TErrorEvent;
  var ErrorCode: Integer);
begin
 StatusBar1.SimpleText:='连接出错！';
 errorcode:=0;   //出错代码
end;

procedure TForm1.ClientSocket1Read(Sender: TObject;
  Socket: TCustomWinSocket);
var
 s:string;
begin
 succ :=false;
 s:=socket.ReceiveText;
 if  (pos('200',s)<>0) then    //返回信息：200 OK，表示发送成功
 begin
  StatusBar1.SimpleText:='成功！';
  clientsocket1.Active :=false;
  succ :=true;
  Button1.Enabled :=true;
 end else
 begin
  StatusBar1.SimpleText:='失败！';
  clientsocket1.active:=true;
  succ :=false;
  Button1.Enabled :=false;
 end;

end;

procedure TForm1.Button2Click(Sender: TObject);
begin
 Close;
end;

procedure TForm1.Timer1Timer(Sender: TObject);
begin
  DelayTime :=strtoint(trim(edit7.text));
  timer1.Interval :=DelayTime;
  timer1.Enabled :=True;
  clientsocket1.Active :=true;
  SendData;    //发送数据
end;

procedure TForm1.SendData;
var
 i:integer;
begin
  EndID :=StrToInt(trim(edit6.text));
  TopicID :=StrToInt(trim(edit4.text));
  if TopicID<EndID then
  begin
   Inc(TopicID);
   BuildHttpHead();   //构造Http头信息
   edit4.Text :=inttostr(TopicID);
  end;
end;

procedure TForm1.Button3Click(Sender: TObject);
begin
   Button3.Enabled :=false;
   StartID :=StrToInt(trim(edit5.text));
   edit4.text :=inttostr(StartID);
   Timer1Timer(sender);
end;

procedure TForm1.Button4Click(Sender: TObject);
begin
 timer1.Enabled :=false;
 clientsocket1.Active :=false;
 Button3.Enabled :=true;
end;

procedure TForm1.BuildHttpHead;
var
 sendp,sends,sendc:string;
begin

  //Http头信息
  sends:='POST /Expert/reply.asp HTTP/1.1'+#13#10;
  sends:=sends+'Accept: image/gif, image/x-xbitmap, image/jpeg, image/pjpeg, application/vnd.ms-powerpoint, application/vnd.ms-excel, application/msword, application/x-shockwave-flash, */*'+#13#10;
  sends:=sends+'Accept-Language: zh-cn'+#13#10;
  sends:=sends+'Content-Type: application/x-www-form-urlencoded'+#13#10;
  sends:=sends+'Accept-Encoding: gzip, deflate'+#13#10;
  sends:=sends+'User-Agent: Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.0)'+#13#10;
  sends:=sends+'Host: expert.csdn.net'+#13#10;
  sends:=sends+'Cache-Control: no-cache'+#13+#10;
  //构造Cookie信息
  if edit1.text<>'' then
  begin
   url.InputString  :=trim(edit1.Text);
   sendp:='username='+url.Encode ;   //unicode编码
   sendc:='csdnname='+url.Encode ;
  end;
  if edit2.text<>'' then
  begin
   url.InputString  :=trim(edit2.Text);
   sendp:=sendp+';userid='+url.Encode;
   sendc:=sendc+'&csdnpassword='+url.Encode ;
  end;
  if edit3.text<>'' then
  begin
   url.InputString  :=trim(edit3.Text);
   sendp:=sendp+';aszx='+url.Encode;
  end;
  sends:=sends+'Cookie: '+sendp+#13+#10;
  //发送的内容
  url.inputstring:=trim(edit4.text);
  sendc:=sendc+'&Topicid='+url.Encode;
  url.InputString  :=trim(memo1.Text);
  sendc:=sendc+'&ReplyContent='+url.Encode;
  sendc:=sendc+'&xmlReply=aaaaa';
  sends:=sends+'Content-Length: '+inttostr(length(sendc))+#13#10;
  sends:=sends+'Connection: Keep-Alive'+#13+#10+#13#10 +sendc;
  memo2.Lines.Clear;
  memo2.Lines.Add(sends);
  clientsocket1.Socket.SendText(sends);   //发送
end;

procedure TForm1.ClientSocket1Connect(Sender: TObject;
  Socket: TCustomWinSocket);
begin
   BuildHttpHead();   //一连接成功就发送
end;

procedure TForm1.FormShow(Sender: TObject);
begin
 succ :=false;  //是否成功
end;

procedure TForm1.Button5Click(Sender: TObject);
begin
 button1.Enabled :=true;
 clientsocket1.Active :=false;
end;

end.