#include??
#include??
#include??
#include?
#include?
#include?
#include?
//#pragma?comment（lib“wsock32.lib“）

#define?IPVER???4???????????//IP協議預定
#define?MAX_BUFF_LEN?65500??//發送緩沖區最大值

typedef?struct?ip_hdr????//定義IP首部?
{?
UCHAR?h_verlen;????????????//4位首部長度4位IP版本號?
UCHAR?tos;????????????????//8位服務類型TOS?
USHORT?total_len;????????//16位總長度（字節）?
USHORT?ident;????????????//16位標識?
USHORT?frag_and_flags;????//3位標志位?
UCHAR?ttl;????????????????//8位生存時間?TTL?
UCHAR?proto;????????????//8位協議?（TCP?UDP?或其他）?
USHORT?checksum;????????//16位IP首部校驗和?
ULONG?sourceIP;????????????//32位源IP地址?
ULONG?destIP;????????????//32位目的IP地址?
}IP_HEADER;?

typedef?struct?tsd_hdr?//定義TCP偽首部?
{?
ULONG?saddr;????//源地址
ULONG?daddr;????//目的地址?
UCHAR?mbz;????????//沒用
UCHAR?ptcl;????????//協議類型?
USHORT?tcpl;????//TCP長度?
}PSD_HEADER;?

typedef?struct?tcp_hdr?//定義TCP首部?
{?
USHORT?th_sport;????????????//16位源端口?
USHORT?th_dport;????????????//16位目的端口?
ULONG?th_seq;????????????????//32位序列號?
ULONG?th_ack;????????????????//32位確認號?
UCHAR?th_lenres;????????????//4位首部長度/6位保留字?
UCHAR?th_flag;????????????????//6位標志位?
USHORT?th_win;????????????????//16位窗口大小?
USHORT?th_sum;????????????????//16位校驗和?
USHORT?th_urp;????????????????//16位緊急數據偏移量?
}TCP_HEADER;?

//CheckSum:計算校驗和的子函數?
USHORT?checksum（USHORT?*buffer?int?size）?
{?
????unsigned?long?cksum=0;?
????while（size?>1）?
????{?
????????cksum+=*buffer++;?
????????size?-=sizeof（USHORT）;?
????}?
????if（size）?
????{?
????????cksum?+=?*（UCHAR*）buffer;?
????}?

????cksum?=?（cksum?>>?16）?+?（cksum?&?0xffff）;?
????cksum?+=?（cksum?>>16）;?
????return?（USHORT）（~cksum）;?
}?

int?main（int?argc?char*?argv[]）?
{?
????WSADATA?WSAData;?
????SOCKET?sock;?
????
????IP_HEADER?ipHeader;?
????TCP_HEADER?tcpHeader;?
????PSD_HEADER?psdHeader;?

????char?Sendto_Buff[MAX_BUFF_LEN];??//發送緩沖區
????unsigned?short?check_Buff[MAX_BUFF_LEN];?//檢驗和緩沖區
????const?char?tcp_send_data[]={“This?is?my?homework?of?networtI?am?happy!“};

????BOOL?flag;?
????int?rectnTimeOver;?

????if?（argc!=?5）?
????{
????????printf（“Useage:?SendTcp?soruce_ip?source_port?dest_ip?dest_port?\n“）;?
????????return?false;?
????}?

????if?（WSAStartup（MAKEWORD（22）?&WSAData）!=0）?
????{?
????????printf（“WSAStartup?Error!\n“）;?
????????return?false;?
????}?

????if?（（sock=WSASocket（AF_INETSOCK_RAWIPPROTO_IPNULL0WSA_FLAG_OVERLAPPED））==INVALID_SOCKET）?
????{?
????????printf（“Socket?Setup?Error!\n“）;?
????????return?false;?
????}?
????flag=true;?
????if?（setsockopt（sockIPPROTO_IP?IP_HDRINCL（char?*）&flagsizeof（flag））==SOCKET_ERROR）?
????{?
????????printf（“setsockopt?IP_HDRINCL?error!\n“）;?
????????return?false;?
????}?
????nTimeOver=1000;?
????if?（setsockopt（sock?SOL_SOCKET?SO_SNDTIMEO?（char*）&nTimeOver?sizeof（nTimeOver））==SOCKET_ERROR）?
????{?
????????printf（“setsockopt?SO_SNDTIMEO?error!\n“）;?
????????return?false;?
????}?

?屬性????????????大小?????日期????時間???名稱
-----------?---------??----------?-----??----

?????文件??????17011??2008-06-24?20:27??發送tcp數據包\tcp\Debug\net.obj

?????文件??????25600??2008-06-24?20:27??發送tcp數據包\tcp\Debug\tcp.pdb

?????文件?????148480??2008-06-24?20:27??發送tcp數據包\tcp\Debug\vc60.idb

?????文件??????77824??2008-06-24?20:27??發送tcp數據包\tcp\Debug\vc60.pdb

?????文件???????6080??2008-06-24?20:27??發送tcp數據包\tcp\net.cpp

?????文件???????3922??2008-06-24?22:30??發送tcp數據包\tcp\tcp.dsp

?????文件????????531??2008-06-24?15:27??發送tcp數據包\tcp\tcp.dsw

?????文件??????33792??2008-06-24?22:30??發送tcp數據包\tcp\tcp.ncb

?????文件??????48640??2008-06-24?22:30??發送tcp數據包\tcp\tcp.opt

?????文件????????913??2008-06-24?20:27??發送tcp數據包\tcp\tcp.plg

?????文件?????108032??2008-07-04?09:20??發送tcp數據包\發送tcp數據包.doc

?????目錄??????????0??2009-05-16?09:09??發送tcp數據包\tcp\Debug

?????目錄??????????0??2009-05-16?09:09??發送tcp數據包\tcp

?????目錄??????????0??2009-06-24?18:21??發送tcp數據包

-----------?---------??----------?-----??----

???????????????470825????????????????????14