//raw?tcp?packet?crafter

#include?“stdio.h“
#include?“winsock2.h“
#include?“ws2tcpip.h“??//IP_HDRINCL?is?here
#include?“conio.h“

#pragma?comment（lib“ws2_32.lib“）??//winsock?2.2?library

typedef?struct?ip_hdr
{
????unsigned?char??ip_header_len:4;??//?4-bit?header?length?（in?32-bit?words）?normally=5?（Means?20?Bytes?may?be?24?also）
????unsigned?char??ip_version???:4;??//?4-bit?IPv4?version
????unsigned?char??ip_tos;???????????//?IP?type?of?service
????unsigned?short?ip_total_length;??//?Total?length
????unsigned?short?ip_id;????????????//?Unique?identifier?
????
	unsigned?char??ip_frag_offset???:5;????????//?Fragment?offset?field
	
	unsigned?char??ip_more_fragment?:1;
	unsigned?char??ip_dont_fragment?:1;
	unsigned?char??ip_reserved_zero?:1;
	
????unsigned?char??ip_frag_offset1;????//fragment?offset
	
	unsigned?char??ip_ttl;???????????//?Time?to?live
????unsigned?char??ip_protocol;??????//?Protocol（TCPUDP?etc）
????unsigned?short?ip_checksum;??????//?IP?checksum
????unsigned?int???ip_srcaddr;???????//?Source?address
????unsigned?int???ip_destaddr;??????//?Source?address
}???IPV4_HDR?*PIPV4_HDR?FAR?*?LPIPV4_HDR;


//?TCP?header
typedef?struct?tcp_header?
{?
	unsigned?short?source_port;??//?source?port?
	unsigned?short?dest_port;????//?destination?port?
	unsigned?int???sequence;?????//?sequence?number?-?32?bits?
	unsigned?int???acknowledge;??//?acknowledgement?number?-?32?bits?
		
	unsigned?char??ns???:1;??????????//Nonce?Sum?Flag?Added?in?RFC?3540.
	unsigned?char??reserved_part1:3;?//according?to?rfc
	unsigned?char??data_offset:4;????/*The?number?of?32-bit?words?in?the?TCP?header.?
									???This?indicates?where?the?data?begins.?
									???The?length?of?the?TCP?header?is?always?a?multiple?
									???of?32?bits.*/
????		
	unsigned?char??fin??:1;??????//Finish?Flag
	unsigned?char??syn??:1;??????//Synchronise?Flag
	unsigned?char??rst??:1;??????//Reset?Flag
	unsigned?char??psh??:1;??????//Push?Flag?
	unsigned?char??ack??:1;??????//Acknowledgement?Flag?
	unsigned?char??urg??:1;??????//Urgent?Flag
????
	unsigned?char??ecn??:1;??????//ECN-Echo?Flag
????unsigned?char??cwr??:1;??????//Congestion?Window?Reduced?Flag
	
	////////////////////////////////
	
	unsigned?short?window;??//?window?
	unsigned?short?checksum;??//?checksum?
	unsigned?short?urgent_pointer;??//?urgent?pointer?
}???TCP_HDR??*PTCP_HDR??FAR?*?LPTCP_HDR??TCPHeader??TCP_HEADER;

int?main（）
{
	char?host[100]buf[1000]*data=NULLsource_ip[20];?//buf?is?the?complete?packet
	SOCKET?s;
	int?k=1;
	
	IPV4_HDR?*v4hdr=NULL;
	TCP_HDR??*tcphdr=NULL;
	
	int?payload=512??optval;
	SOCKADDR_IN?dest;
	hostent?*server;
	
	//Initialise?Winsock
	WSADATA?wsock;
	printf（“\nInitialising?Winsock...“）;
	if?（WSAStartup（MAKEWORD（22）&wsock）?!=?0）
	{
		fprintf（stderr“WSAStartup（）?failed“）;
????????exit（EXIT_FAILURE）;?
	}?
	printf（“Initialised?successfully.“）;
	////////////////////////////////////////////////
	
	//Crea

?屬性????????????大小?????日期????時間???名稱
-----------?---------??----------?-----??----
?????文件????????5540??2007-01-03?16:15??main.cpp
?????文件????????4282??2006-09-29?21:39??tcpraw.dsp
?????文件?????????537??2006-09-29?20:30??tcpraw.dsw