用DELPHI如何发送封包 用DELPHI如何发送封包. 解决方案 » 免费领取超大流量手机卡,每月29元包185G流量+100分钟通话, 中国电信官方发货 你自已看一下下面的程序自定义封包的unit Unit1;interfaceusesWindows, Messages, SysUtils, Classes, Graphics, Controls, Forms, Dialogs,StdCtrls, OleCtrls, Registry, ExtCtrls, Winsock;const Max_Message = 4068; Max_Packet = 4096;typeTPacketBuffer = Array[0..Max_Packet-1] of byte; TForm1 = class(TForm) Button1: TButton; Label1:TLabel; Label2:TLabel; Label3:TLabel; Label4:TLabel; Memo1: TMemo; Edit1: TEdit; Edit2: TEdit; Edit4: TEdit; Edit3: TEdit; procedure Button1Click(Sender: TObject); private { Private declarations } public { Public declarations } procedure SendIt;end;// IP 头type T_IP_Header = record ip_verlen : Byte; ip_tos : Byte; ip_totallength : Word; ip_id : Word; ip_offset : Word; ip_ttl : Byte; ip_protocol : Byte; ip_checksum : Word; ip_srcaddr : LongWord; ip_destaddr : LongWord;end;// UDP 头type T_UDP_Header = record src_portno : Word; dst_portno : Word; udp_length : Word; udp_checksum : Word;end;// 一些 Winsock 2 的类型声明u_char = Char;u_short = Word;u_int = Integer;u_long = Longint;SunB = packed record s_b1, s_b2, s_b3, s_b4: u_char;end;SunW = packed record s_w1, s_w2: u_short;end;in_addr = recordcase integer of 0: (S_un_b: SunB); 1: (S_un_w: SunW); 2: (S_addr: u_long);end;TInAddr = in_addr;Sockaddr_in = recordcase Integer of 0: (sin_family: u_short; sin_port: u_short; sin_addr: TInAddr; sin_zero: array[0..7] of Char); 1: (sa_family: u_short; sa_data: array[0..13] of Char)end;TSockAddr = Sockaddr_in; TSocket = u_int;const WSADESCRIPTION_LEN = 256; WSASYS_STATUS_LEN = 128;type PWSAData = ^TWSAData; WSAData = record // WSDATA wVersion: Word; wHighVersion: Word; szDescription: array[0..WSADESCRIPTION_LEN] of Char; szSystemStatus: array[0..WSASYS_STATUS_LEN] of Char; iMaxSockets: Word; iMaxUdpDg: Word; lpVendorInfo: PChar;end;TWSAData = WSAData;typeTWordArray = Array[0..1] of Word;//定义一些 winsock 2 函数function closesocket(s: TSocket): Integer; stdcall;function socket(af, Struct, protocol: Integer): TSocket; stdcall;function sendto(s: TSocket; var Buf; len, flags: Integer; var addrto: TSockAddr;tolen: Integer): Integer; stdcall;function setsockopt(s: TSocket; level, optname: Integer; optval: PChar;optlen: Integer): Integer; stdcall;function inet_addr(cp: PChar): u_long; stdcall;function htons(hostshort: u_short): u_short; stdcall;function WSAGetLastError: Integer; stdcall;function WSAStartup(wVersionRequired: word; var WSData: TWSAData): Integer; stdcall;function WSACleanup: Integer; stdcall;const AF_INET = 2; // internetwork: UDP, TCP, etc. IP_HDRINCL = 2; // IP Header Include SOCK_RAW = 3; // raw-protocol interface IPPROTO_IP = 0; // dummy for IP IPPROTO_TCP = 6; // tcp IPPROTO_UDP = 17; // user datagram protocol IPPROTO_RAW = 255; // raw IP packet INVALID_SOCKET = TSocket(NOT(0)); SOCKET_ERROR = -1;var Form1: TForm1; SrcIP, DestIP :String; SrcPort,DestPort :Word;implementation// 导入 Winsock 2 函数const WinSocket = 'WS2_32.DLL';function closesocket; external winsocket name 'closesocket';function socket; external winsocket name 'socket';function sendto; external winsocket name 'sendto';function setsockopt; external winsocket name 'setsockopt';function inet_addr; external winsocket name 'inet_addr';function htons; external winsocket name 'htons';function WSAGetLastError; external winsocket name 'WSAGetLastError';function WSAStartup; external winsocket name 'WSAStartup';function WSACleanup; external winsocket name 'WSACleanup';{$R *.DFM} function CheckSum(var Buffer; Size : integer) : Word;var ChkSum : LongWord; i : Integer;beginChkSum := 0;i := 0;while Size > 1 dobegin ChkSum := ChkSum + TWordArray(Buffer)[i]; inc(i); Size := Size - SizeOf(Word);end;if Size=1 then ChkSum := ChkSum + Byte(TWordArray(Buffer)[i]);ChkSum := (ChkSum shr 16) + (ChkSum and $FFFF);ChkSum := ChkSum + (Chksum shr 16);Result := Word(ChkSum);end;procedure BuildHeaders(FromIP : String;iFromPort : Word;ToIP : String;iToPort : Word;StrMessage : String;Var Buf : TPacketBuffer;Var remote : TSockAddr;Var iTotalSize : Word);var dwFromIP : LongWord; dwToIP : LongWord; iIPVersion : Word; iIPSize : Word; ipHdr : T_IP_Header; udpHdr : T_UDP_Header; iUdpSize : Word; iUdpChecksumSize : Word; cksum : Word; Ptr : ^Byte;procedure IncPtr(Value : Integer);beginptr := pointer(integer(ptr) + Value);end;begin// Convert ip address'ssdwFromIP := inet_Addr(PChar(FromIP));dwToIP := inet_Addr(PChar(ToIP));// 初始化 IP 头//iTotalSize := sizeof(ipHdr) + sizeof(udpHdr) + length(strMessage);iIPVersion := 4;iIPSize := sizeof(ipHdr) div sizeof(LongWord);ipHdr.ip_verlen := (iIPVersion shl 4) or iIPSize;ipHdr.ip_tos := 0; // IP type of serviceipHdr.ip_totallength := htons(iTotalSize); // Total packet lenipHdr.ip_id := 0; // Unique identifier: set to 0ipHdr.ip_offset := 0; // Fragment offset fieldipHdr.ip_ttl := 128; // Time to liveipHdr.ip_protocol := $11; // Protocol(UDP)ipHdr.ip_checksum := 0 ; // IP checksumipHdr.ip_srcaddr := dwFromIP; // Source addressipHdr.ip_destaddr := dwToIP; // Destination address//// 初始化 UDP 头//iUdpSize := sizeof(udpHdr) + length(strMessage);udpHdr.src_portno := htons(iFromPort) ;udpHdr.dst_portno := htons(iToPort) ;udpHdr.udp_length := htons(iUdpSize) ;udpHdr.udp_checksum := 0 ;iUdpChecksumSize := 0;ptr := @buf[0];FillChar(Buf, SizeOf(Buf), 0);Move(ipHdr.ip_srcaddr, ptr^, SizeOf(ipHdr.ip_srcaddr));IncPtr(SizeOf(ipHdr.ip_srcaddr));iUdpChecksumSize := iUdpChecksumSize + sizeof(ipHdr.ip_srcaddr);Move(ipHdr.ip_destaddr, ptr^, SizeOf(ipHdr.ip_destaddr));IncPtr(SizeOf(ipHdr.ip_destaddr));iUdpChecksumSize := iUdpChecksumSize + sizeof(ipHdr.ip_destaddr);IncPtr(1);Inc(iUdpChecksumSize);Move(ipHdr.ip_protocol, ptr^, sizeof(ipHdr.ip_protocol));IncPtr(sizeof(ipHdr.ip_protocol));iUdpChecksumSize := iUdpChecksumSize + sizeof(ipHdr.ip_protocol);Move(udpHdr.udp_length, ptr^, sizeof(udpHdr.udp_length));IncPtr(sizeof(udpHdr.udp_length));iUdpChecksumSize := iUdpChecksumSize + sizeof(udpHdr.udp_length);move(udpHdr, ptr^, sizeof(udpHdr));IncPtr(sizeof(udpHdr));iUdpChecksumSize := iUdpCheckSumSize + sizeof(udpHdr);Move(StrMessage[1], ptr^, Length(strMessage));IncPtr(Length(StrMessage));iUdpChecksumSize := iUdpChecksumSize + length(strMessage);cksum := checksum(buf, iUdpChecksumSize);udpHdr.udp_checksum := cksum;//// 现在 IP 和 UDP 头OK了,我们可以把它发送出去。//FillChar(Buf, SizeOf(Buf), 0);Ptr := @Buf[0];Move(ipHdr, ptr^, SizeOf(ipHdr)); IncPtr(SizeOf(ipHdr));Move(udpHdr, ptr^, SizeOf(udpHdr)); IncPtr(SizeOf(udpHdr));Move(StrMessage[1], ptr^, length(StrMessage));remote.sin_family := AF_INET;remote.sin_port := htons(iToPort);remote.sin_addr.s_addr := dwToIP;end;procedure TForm1.SendIt;Var sh : TSocket; bOpt : Integer; ret : Integer; Buf : TPacketBuffer; Remote : TSockAddr; Local : TSockAddr; iTotalSize : Word; wsadata : TWSAdata;begin// Startup Winsock 2ret := WSAStartup(2, wsadata);if ret<>0 then begin self.Memo1.Lines.Add('WSA Startup 失败。'); exit;end;with self.Memo1.Lines do begin Add('WSA Startup:'); Add('描述: '+wsaData.szDescription); Add('状态字: '+wsaData.szSystemStatus);end;try sh := Socket(AF_INET, SOCK_RAW, IPPROTO_UDP); if sh = INVALID_SOCKET then begin self.Memo1.Lines.Add('Socket() 函数调用失败: '+IntToStr(WSAGetLastError)); exit; end; self.Memo1.Lines.Add('Socket Handle = '+IntToStr(sh)); // Option: Header Include bOpt := 1; if SetSockOpt(sh, IPPROTO_IP, IP_HDRINCL, @bOpt, SizeOf(bOpt)) = SOCKET_ERROR then begin self.Memo1.Lines.Add('SetSockopt(IP_HDRINCL) 函数调用失败: '+IntToStr(WSAGetLastError)); exit; end; // Build the packet BuildHeaders( SrcIP, SrcPort,DestIP, DestPort,'THIS IS A TEST PACKET', Buf, Remote, iTotalSize ); // Send the packet ret := SendTo(sh, buf, iTotalSize, 0, Remote, SizeOf(Remote)); if ret = SOCKET_ERROR then self.Memo1.Lines.Add('SendTo() 函数调用失败: '+IntToStr(WSAGetLastError)) else self.Memo1.Lines.Add('已发送 '+IntToStr(ret)+' 字节.'); CloseSocket(sh);finally WSACleanup;end;end;procedure TForm1.Button1Click(Sender: TObject);beginSrcIP:=self.Edit1.Text;SrcPort:=strtoint(self.Edit2.Text);DestIP:=self.Edit3.Text;DestPort:=strtoint(self.Edit4.Text);SendIt;end;end. 如何得到MSSQLSERVER数据库表的字段,类型,长度 问一个很笨的问题(关于事件响应的) 请教高手,能不能在webBrowser显示网页中捕获一个按钮所发出的消息? 问个问题,D8只能开发.net的程序吗? 在线等待:求援!请大家帮忙!!!QQQ TactionList!!!! 我只想选取一个目录而已,用OpenDialog控件吗?快 有这样的源码吗?有关树形控件的 用Batchmove追加数据到远程数据库中的方法?(在线等待) 我想求出我的sql表里一列数中最大的数,怎么求啊?请高手帮忙! adoconnection组件的问题 求救(在线等)
unit Unit1;
interfaceuses
Windows, Messages, SysUtils, Classes, Graphics, Controls, Forms, Dialogs,
StdCtrls, OleCtrls, Registry, ExtCtrls, Winsock;const
Max_Message = 4068;
Max_Packet = 4096;typeTPacketBuffer = Array[0..Max_Packet-1] of byte; TForm1 = class(TForm)
Button1: TButton;
Label1:TLabel;
Label2:TLabel;
Label3:TLabel;
Label4:TLabel;
Memo1: TMemo;
Edit1: TEdit;
Edit2: TEdit;
Edit4: TEdit;
Edit3: TEdit;
procedure Button1Click(Sender: TObject);
private
{ Private declarations }
public
{ Public declarations }
procedure SendIt;
end;// IP 头
type
T_IP_Header = record
ip_verlen : Byte;
ip_tos : Byte;
ip_totallength : Word;
ip_id : Word;
ip_offset : Word;
ip_ttl : Byte;
ip_protocol : Byte;
ip_checksum : Word;
ip_srcaddr : LongWord;
ip_destaddr : LongWord;
end;// UDP 头
type
T_UDP_Header = record
src_portno : Word;
dst_portno : Word;
udp_length : Word;
udp_checksum : Word;
end;// 一些 Winsock 2 的类型声明
u_char = Char;
u_short = Word;
u_int = Integer;
u_long = Longint;SunB = packed record
s_b1, s_b2, s_b3, s_b4: u_char;
end;SunW = packed record
s_w1, s_w2: u_short;
end;in_addr = record
case integer of
0: (S_un_b: SunB);
1: (S_un_w: SunW);
2: (S_addr: u_long);
end;TInAddr = in_addr;Sockaddr_in = record
case Integer of
0: (sin_family: u_short;
sin_port: u_short;
sin_addr: TInAddr;
sin_zero: array[0..7] of Char);
1: (sa_family: u_short;
sa_data: array[0..13] of Char)
end;TSockAddr = Sockaddr_in;
TSocket = u_int;const
WSADESCRIPTION_LEN = 256;
WSASYS_STATUS_LEN = 128;type
PWSAData = ^TWSAData;
WSAData = record // WSDATA
wVersion: Word;
wHighVersion: Word;
szDescription: array[0..WSADESCRIPTION_LEN] of Char;
szSystemStatus: array[0..WSASYS_STATUS_LEN] of Char;
iMaxSockets: Word;
iMaxUdpDg: Word;
lpVendorInfo: PChar;
end;
TWSAData = WSAData;type
TWordArray = Array[0..1] of Word;//定义一些 winsock 2 函数
function closesocket(s: TSocket): Integer; stdcall;
function socket(af, Struct, protocol: Integer): TSocket; stdcall;
function sendto(s: TSocket; var Buf; len, flags: Integer; var addrto: TSockAddr;
tolen: Integer): Integer; stdcall;
function setsockopt(s: TSocket; level, optname: Integer; optval: PChar;
optlen: Integer): Integer; stdcall;
function inet_addr(cp: PChar): u_long; stdcall;
function htons(hostshort: u_short): u_short; stdcall;
function WSAGetLastError: Integer; stdcall;
function WSAStartup(wVersionRequired: word; var WSData: TWSAData): Integer; stdcall;
function WSACleanup: Integer; stdcall;const
AF_INET = 2; // internetwork: UDP, TCP, etc. IP_HDRINCL = 2; // IP Header Include SOCK_RAW = 3; // raw-protocol interface IPPROTO_IP = 0; // dummy for IP
IPPROTO_TCP = 6; // tcp
IPPROTO_UDP = 17; // user datagram protocol
IPPROTO_RAW = 255; // raw IP packet INVALID_SOCKET = TSocket(NOT(0));
SOCKET_ERROR = -1;var
Form1: TForm1;
SrcIP, DestIP :String;
SrcPort,DestPort :Word;implementation// 导入 Winsock 2 函数
const WinSocket = 'WS2_32.DLL';function closesocket; external winsocket name 'closesocket';
function socket; external winsocket name 'socket';
function sendto; external winsocket name 'sendto';function setsockopt; external winsocket name 'setsockopt';
function inet_addr; external winsocket name 'inet_addr';
function htons; external winsocket name 'htons';
function WSAGetLastError; external winsocket name 'WSAGetLastError';
function WSAStartup; external winsocket name 'WSAStartup';
function WSACleanup; external winsocket name 'WSACleanup';
{$R *.DFM}
function CheckSum(var Buffer; Size : integer) : Word;
var
ChkSum : LongWord;
i : Integer;
begin
ChkSum := 0;
i := 0;
while Size > 1 do
begin
ChkSum := ChkSum + TWordArray(Buffer)[i];
inc(i);
Size := Size - SizeOf(Word);
end;if Size=1 then ChkSum := ChkSum + Byte(TWordArray(Buffer)[i]);ChkSum := (ChkSum shr 16) + (ChkSum and $FFFF);
ChkSum := ChkSum + (Chksum shr 16);Result := Word(ChkSum);
end;
procedure BuildHeaders(
FromIP : String;
iFromPort : Word;
ToIP : String;
iToPort : Word;
StrMessage : String;
Var Buf : TPacketBuffer;
Var remote : TSockAddr;
Var iTotalSize : Word
);
var
dwFromIP : LongWord;
dwToIP : LongWord; iIPVersion : Word;
iIPSize : Word;
ipHdr : T_IP_Header;
udpHdr : T_UDP_Header; iUdpSize : Word;
iUdpChecksumSize : Word;
cksum : Word; Ptr : ^Byte;procedure IncPtr(Value : Integer);
begin
ptr := pointer(integer(ptr) + Value);
end;begin
// Convert ip address'ssdwFromIP := inet_Addr(PChar(FromIP));
dwToIP := inet_Addr(PChar(ToIP));// 初始化 IP 头
//
iTotalSize := sizeof(ipHdr) + sizeof(udpHdr) + length(strMessage);iIPVersion := 4;
iIPSize := sizeof(ipHdr) div sizeof(LongWord);ipHdr.ip_verlen := (iIPVersion shl 4) or iIPSize;
ipHdr.ip_tos := 0; // IP type of service
ipHdr.ip_totallength := htons(iTotalSize); // Total packet len
ipHdr.ip_id := 0; // Unique identifier: set to 0
ipHdr.ip_offset := 0; // Fragment offset field
ipHdr.ip_ttl := 128; // Time to live
ipHdr.ip_protocol := $11; // Protocol(UDP)
ipHdr.ip_checksum := 0 ; // IP checksum
ipHdr.ip_srcaddr := dwFromIP; // Source address
ipHdr.ip_destaddr := dwToIP; // Destination address
//
// 初始化 UDP 头
//
iUdpSize := sizeof(udpHdr) + length(strMessage);udpHdr.src_portno := htons(iFromPort) ;
udpHdr.dst_portno := htons(iToPort) ;
udpHdr.udp_length := htons(iUdpSize) ;
udpHdr.udp_checksum := 0 ;iUdpChecksumSize := 0;ptr := @buf[0];
FillChar(Buf, SizeOf(Buf), 0);Move(ipHdr.ip_srcaddr, ptr^, SizeOf(ipHdr.ip_srcaddr));
IncPtr(SizeOf(ipHdr.ip_srcaddr));iUdpChecksumSize := iUdpChecksumSize + sizeof(ipHdr.ip_srcaddr);Move(ipHdr.ip_destaddr, ptr^, SizeOf(ipHdr.ip_destaddr));
IncPtr(SizeOf(ipHdr.ip_destaddr));iUdpChecksumSize := iUdpChecksumSize + sizeof(ipHdr.ip_destaddr);IncPtr(1);Inc(iUdpChecksumSize);Move(ipHdr.ip_protocol, ptr^, sizeof(ipHdr.ip_protocol));
IncPtr(sizeof(ipHdr.ip_protocol));
iUdpChecksumSize := iUdpChecksumSize + sizeof(ipHdr.ip_protocol);Move(udpHdr.udp_length, ptr^, sizeof(udpHdr.udp_length));
IncPtr(sizeof(udpHdr.udp_length));
iUdpChecksumSize := iUdpChecksumSize + sizeof(udpHdr.udp_length);move(udpHdr, ptr^, sizeof(udpHdr));
IncPtr(sizeof(udpHdr));
iUdpChecksumSize := iUdpCheckSumSize + sizeof(udpHdr);Move(StrMessage[1], ptr^, Length(strMessage));
IncPtr(Length(StrMessage));iUdpChecksumSize := iUdpChecksumSize + length(strMessage);cksum := checksum(buf, iUdpChecksumSize);
udpHdr.udp_checksum := cksum;//
// 现在 IP 和 UDP 头OK了,我们可以把它发送出去。
//
FillChar(Buf, SizeOf(Buf), 0);
Ptr := @Buf[0];Move(ipHdr, ptr^, SizeOf(ipHdr)); IncPtr(SizeOf(ipHdr));
Move(udpHdr, ptr^, SizeOf(udpHdr)); IncPtr(SizeOf(udpHdr));
Move(StrMessage[1], ptr^, length(StrMessage));remote.sin_family := AF_INET;
remote.sin_port := htons(iToPort);
remote.sin_addr.s_addr := dwToIP;
end;procedure TForm1.SendIt;
Var
sh : TSocket;
bOpt : Integer;
ret : Integer;
Buf : TPacketBuffer;
Remote : TSockAddr;
Local : TSockAddr;
iTotalSize : Word;
wsadata : TWSAdata;
begin
// Startup Winsock 2ret := WSAStartup(2, wsadata);
if ret<>0 then begin
self.Memo1.Lines.Add('WSA Startup 失败。');
exit;
end;
with self.Memo1.Lines do begin
Add('WSA Startup:');
Add('描述: '+wsaData.szDescription);
Add('状态字: '+wsaData.szSystemStatus);
end;try
sh := Socket(AF_INET, SOCK_RAW, IPPROTO_UDP);
if sh = INVALID_SOCKET then
begin
self.Memo1.Lines.Add('Socket() 函数调用失败: '+IntToStr(WSAGetLastError));
exit;
end;
self.Memo1.Lines.Add('Socket Handle = '+IntToStr(sh)); // Option: Header Include
bOpt := 1;
if SetSockOpt(sh, IPPROTO_IP, IP_HDRINCL, @bOpt, SizeOf(bOpt)) = SOCKET_ERROR then
begin
self.Memo1.Lines.Add('SetSockopt(IP_HDRINCL) 函数调用失败: '+IntToStr(WSAGetLastError));
exit;
end; // Build the packet
BuildHeaders( SrcIP, SrcPort,DestIP, DestPort,'THIS IS A TEST PACKET',
Buf, Remote, iTotalSize ); // Send the packet
ret := SendTo(sh, buf, iTotalSize, 0, Remote, SizeOf(Remote));
if ret = SOCKET_ERROR then
self.Memo1.Lines.Add('SendTo() 函数调用失败: '+IntToStr(WSAGetLastError))
else
self.Memo1.Lines.Add('已发送 '+IntToStr(ret)+' 字节.'); CloseSocket(sh);
finally
WSACleanup;
end;
end;procedure TForm1.Button1Click(Sender: TObject);
begin
SrcIP:=self.Edit1.Text;
SrcPort:=strtoint(self.Edit2.Text);
DestIP:=self.Edit3.Text;
DestPort:=strtoint(self.Edit4.Text);
SendIt;
end;end.