type
PIPOptionInformation = ^TIPOptionInformation;
TIPOptionInformation = packed record
TTL: Byte; TOS: Byte;
Flags: Byte;
OptionsSize: Byte;
OptionsData: PChar;
end;
PIcmpEchoReply = ^TIcmpEchoReply;
TIcmpEchoReply = packed record
Address: DWORD;
Status: DWORD;
RTT: DWORD;
DataSize: Word;
Reserved: Word;
Data: Pointer;
Options: TIPOptionInformation ;
end;
TIcmpCreateFile = function: THandle; stdcall;
TIcmpCloseHandle = function(IcmpHandle: THandle):Boolean;stdcall; TIcmpSendEcho=function(IcmpHandle:THandle;DestinationAddress:DWORD;
RequestData:Pointer;RequestSize:Word;RequestOptions:IPOptionInformation;
ReplyBuffer: Pointer;ReplySize: DWord;Timeout: DWord): DWord; stdcall; TMyPing = class(TForm)
Panel1: TPanel;
Label1: TLabel;
PingEdit: TEdit;
ExeBtn: TButton;
Button2: TButton;
Button3: TButton;
StatusShow: TMemo;
procedure Button3Click(Sender: TObject); procedure FormCreate(Sender: TObject);
procedure ExeBtnClick(Sender: TObject);
private { Private declarations }
hICMP: THANDLE;
IcmpCreateFile : TIcmpCreateFile;
IcmpCloseHandle: TIcmpCloseHandle;
IcmpSendEcho: TIcmpSendEcho;
public { Public declarations }
end;
procedure TMyPing.FormCreate(Sender: TObject);
var
WSAData: TWSAData;
hICMPdll: HMODULE;
begin
// Load the icmp.dll stuff
hICMPdll := LoadLibrary('icmp.dll'); @ICMPCreateFile := GetProcAddress(hICMPdll, 'IcmpCreateFile');
@IcmpCloseHandle := GetProcAddress(hICMPdll, 'IcmpCloseHandle');
@IcmpSendEcho := GetProcAddress(hICMPdll, 'IcmpSendEcho');
hICMP := IcmpCreateFile;
StatusShow.Text := '';
StatusShow.Lines.Add('目的IP地址 字节数 返回时间(毫秒)');
end;
//接下来,就要进行如下所示的Ping操作的实际编程过程了。
procedure TMyPing.ExeBtnClick(Sender: TObject); var
IPOpt:TIPOptionInformation;// IP Options for packet to send
FIPAddress:DWORD;
pReqData,pRevData:PChar;
pIPE:PIcmpEchoReply;// ICMP Echo reply buffer
FSize: DWORD;
MyString:string;
FTimeOut:DWORD;
BufferSize:DWORD;
begin
if PingEdit.Text <> '' then
begin
FIPAddress := inet_addr(PChar(PingEdit.Text));
FSize := 40;
BufferSize := SizeOf(TICMPEchoReply) + FSize; GetMem(pRevData,FSiz e);
GetMem(pIPE,BufferSize);
FillChar(pIPE^, SizeOf(pIPE^), 0);
pIPE^.Data := pRevData;
MyString := 'Hello,World';
pReqData := PChar(MyString);
FillChar(IPOpt, Sizeof(IPOpt), 0);
IPOpt.TTL := 64;
FTimeOut := 4000;
IcmpSendEcho(hICMP, FIPAddress, pReqData, Length(MyString), @IPOpt, pIPE, BufferSize, FTimeOut);
if pReqData^ = pIPE^.Options.OptionsData^ then begin
StatusShow.Lines.Add(PChar(PingEdit.Text) + ' ' +IntToStr(pIPE^.DataSize) + ' ' +IntToStr(pIPE^.RTT));
end;
FreeMem(pRevData);
FreeMem(pIPE);
end
end;
通过上面的编程,我们就实现了Ping功能的界面操作。实际上,ICMP协议的功能还
有很多,都可以通过对Icmp.dll的函数调用来实现。
PIPOptionInformation = ^TIPOptionInformation;
TIPOptionInformation = packed record
TTL: Byte; TOS: Byte;
Flags: Byte;
OptionsSize: Byte;
OptionsData: PChar;
end;
PIcmpEchoReply = ^TIcmpEchoReply;
TIcmpEchoReply = packed record
Address: DWORD;
Status: DWORD;
RTT: DWORD;
DataSize: Word;
Reserved: Word;
Data: Pointer;
Options: TIPOptionInformation ;
end;
TIcmpCreateFile = function: THandle; stdcall;
TIcmpCloseHandle = function(IcmpHandle: THandle):Boolean;stdcall; TIcmpSendEcho=function(IcmpHandle:THandle;DestinationAddress:DWORD;
RequestData:Pointer;RequestSize:Word;RequestOptions:IPOptionInformation;
ReplyBuffer: Pointer;ReplySize: DWord;Timeout: DWord): DWord; stdcall; TMyPing = class(TForm)
Panel1: TPanel;
Label1: TLabel;
PingEdit: TEdit;
ExeBtn: TButton;
Button2: TButton;
Button3: TButton;
StatusShow: TMemo;
procedure Button3Click(Sender: TObject); procedure FormCreate(Sender: TObject);
procedure ExeBtnClick(Sender: TObject);
private { Private declarations }
hICMP: THANDLE;
IcmpCreateFile : TIcmpCreateFile;
IcmpCloseHandle: TIcmpCloseHandle;
IcmpSendEcho: TIcmpSendEcho;
public { Public declarations }
end;
procedure TMyPing.FormCreate(Sender: TObject);
var
WSAData: TWSAData;
hICMPdll: HMODULE;
begin
// Load the icmp.dll stuff
hICMPdll := LoadLibrary('icmp.dll'); @ICMPCreateFile := GetProcAddress(hICMPdll, 'IcmpCreateFile');
@IcmpCloseHandle := GetProcAddress(hICMPdll, 'IcmpCloseHandle');
@IcmpSendEcho := GetProcAddress(hICMPdll, 'IcmpSendEcho');
hICMP := IcmpCreateFile;
StatusShow.Text := '';
StatusShow.Lines.Add('目的IP地址 字节数 返回时间(毫秒)');
end;
//接下来,就要进行如下所示的Ping操作的实际编程过程了。
procedure TMyPing.ExeBtnClick(Sender: TObject); var
IPOpt:TIPOptionInformation;// IP Options for packet to send
FIPAddress:DWORD;
pReqData,pRevData:PChar;
pIPE:PIcmpEchoReply;// ICMP Echo reply buffer
FSize: DWORD;
MyString:string;
FTimeOut:DWORD;
BufferSize:DWORD;
begin
if PingEdit.Text <> '' then
begin
FIPAddress := inet_addr(PChar(PingEdit.Text));
FSize := 40;
BufferSize := SizeOf(TICMPEchoReply) + FSize; GetMem(pRevData,FSiz e);
GetMem(pIPE,BufferSize);
FillChar(pIPE^, SizeOf(pIPE^), 0);
pIPE^.Data := pRevData;
MyString := 'Hello,World';
pReqData := PChar(MyString);
FillChar(IPOpt, Sizeof(IPOpt), 0);
IPOpt.TTL := 64;
FTimeOut := 4000;
IcmpSendEcho(hICMP, FIPAddress, pReqData, Length(MyString), @IPOpt, pIPE, BufferSize, FTimeOut);
if pReqData^ = pIPE^.Options.OptionsData^ then begin
StatusShow.Lines.Add(PChar(PingEdit.Text) + ' ' +IntToStr(pIPE^.DataSize) + ' ' +IntToStr(pIPE^.RTT));
end;
FreeMem(pRevData);
FreeMem(pIPE);
end
end;
通过上面的编程,我们就实现了Ping功能的界面操作。实际上,ICMP协议的功能还
有很多,都可以通过对Icmp.dll的函数调用来实现。
解决方案 »
- delphi字符串处理问题
- 不定长数组相加
- 怎样用程序获取IE浏览器内选择的文字
- 问题:如何用SQL插入包含日期型的记录
- 请问高手在delphi中如何些sql语句实现逻辑备份oracle数据库????
- Ado问题,高手帮忙
- hook messagebox
- 可以这样做吗?
- 各位大虾:小妹我想开发一个数据库应用程序,能否给我一些建议?(比如:采用什么数据库类型、那种数据库查询速度快、可扩展性好?等等) 谢谢大虾!
- Timage中的bmp要如何才能打印出来?急!
- 如果大家还喜欢Delphi,还支持我的话!请进来瞧一瞧,看一看!不收钱
- I have a dream, 建立一个开放源码的项目 志愿者招募中
而是要测试一个具体的tcp端口有没有打开,
方法我已经会了,就是想知道有没有什么办法可以快一点,现在用
idtcpclient遇到机器关机什么的速度太慢