#include <stdio.h> 
  #include <stdlib.h> 
  #include <conio.h> 
  #include <time.h> 
  #include <windows.h> 
  #include <winsock.h> 
   
  /*winsock32.lib kütüphanesini eklemeyi unutmayın */ 
   
  #define WIN32_LEAN_AND_MEAN 
   
  void write_file(char *buf); 
   
  int main (void) 
  { 
    WORD wVersionByCodeC; 
    WSADATA wsaData; 
    SOCKET sock; 
    const int BUF_LEN=10000; 
    struct sockaddr_in address; 
    struct hostent * host; 
    int err; 
    float socklib_ver; 
    char File_Buf[BUF_LEN]; 
    char DomainName[100]; 
    char HostName[100]; 
    time_t tm; 
   
      printf(  "-----------------***************-----------------"); 
      printf("\n----------------- ByCodeC Whois -----------------\n"); 
      printf(  "-----------------***************-----------------\n"); 
      printf("ENTER hostname : "); 
      gets(DomainName); 
      strcat(DomainName, "\r\n"); 
   
      strcat(HostName, "www.uwhois.com"); 
   
      wVersionByCodeC = MAKEWORD( 1, 1 ); 
   
   
     if ( WSAStartup( wVersionByCodeC, &wsaData ) != 0 ) 
       printf("WSAStartup ERROR !!!\n"); 
   
     socklib_ver = HIBYTE( wsaData.wVersion ) / 10.0; 
     socklib_ver += LOBYTE( wsaData.wVersion ); 
   
     if ( socklib_ver < 1.1 ) 
     { 
       printf ("\nError: socket versiyon hatasI !!!.\n"); 
       WSACleanup(); 
       exit(0); 
     } 
   
     time(&tm); 
     sprintf(File_Buf, "Whois ba$LadI  [ %.24s. ]\n\n", ctime(&tm)); 
     write_file(File_Buf); 
   
     if ( (sock = socket(AF_INET, SOCK_STREAM, 0)) == INVALID_SOCKET ) 
       printf("\nsocket hatası !!!\n"); 
   
     address.sin_family=AF_INET; 
     address.sin_port = htons(43); 
   
     sprintf(File_Buf,"Connecting to %s\n", HostName); 
     write_file(File_Buf); 
   
      if ( (host=gethostbyname(HostName)) == NULL ) 
        printf("\nhostname hatası !!! \n"); 
   
      address.sin_addr.s_addr=*((unsigned long *) host->h_addr); 
   
      if ( (connect(sock,(struct sockaddr *) &address, sizeof(address))) != 0) 
        printf("\nconnect hatası !!!\n"); 
   
      strcpy(File_Buf, DomainName); 
      err=send(sock,File_Buf,strlen(File_Buf),0); 
      err=recv(sock,File_Buf,BUF_LEN,0); 
      err=recv(sock,File_Buf,BUF_LEN,0); 
      write_file(File_Buf); 
   
      system("pause"); 
      WSACleanup(); 
      exit(0); 
    } 
   
   
  void write_file(char *buf) 
  { 
   
   
    FILE *fp=fopen("whoislog.txt","a+"); 
    fprintf(fp,"%s\n",buf); 
    fclose(fp); 
    printf("%s\n",buf); 
  }