Re: Plain win32 programming with sockets how?

Re: Plain win32 programming with sockets how?

[Warren Young]

At 11:27 AM 1/13/99 +0100, you wrote:
>How can i get the below code working without the need of the Cygwin?

[snip]

>     nbytes = write (sock, message, strlen (message));  

Use the send() call here: same syntax, but with a fourth argument, which is
usually 0.

>         perror ("write");

No perror under Win32.  Roll your own.  Example 10 in my FAQ (see link in
my signature) has a function that works roughly like perror, except that it
prints into a buffer instead of stdout, and only works with Winsock errors,
not general Win32 errors.

>     close (sock);  

closesocket().

Given those changes, your code should compile under any sane Win32 compiler.

Good luck,

= Warren Young -- Maintainer of the Winsock Programmer's FAQ at:
= http://www.cyberport.com/~tangent/programming/winsock/
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Plain win32 programming with sockets how?

[Johan Compagner]

  
hi,

How can i get the below code working without the need of the Cygwin?
i also hoop that the exe size can be a bit smaller, it is now 300K
I tried to include <windows.h> <windows32\sockets.h> and drop the sys/socket and netinet/in
because those files generates many errors with -mno-cygwin option.
gcced with : gcc -mno-cygwin -lwsock32 test.c
i think that if you don't use cygwin you must use winsock it self am i right?
so the -lwsock32 is neccesary?


thx for you support.
Johan Compagner



#include <stdio.h>
#include <sys/socket.h>
#include <netinet/in.h>

#define PORT            7080

int main(int argc, char *argv[])
{
     int sock;
     char* adres =  "127.0.0.1";
     int nbytes;
     char* message;
     char* hostname = (char*)malloc(sizeof(char[14]));
     struct sockaddr_in name;  
     struct hostent *host;
     if(argc < 2)
     {
         printf ("Wrong Usage: <adres> java_program_to_start");
         return 0;
     }
     if(argc > 2)
     {
         
         adres = argv[1];
         message = argv[2];
     }
     else message = argv[1];
     gethostname (hostname, strlen (hostname));

     /* Create the socket. */
     sock = socket (PF_INET, SOCK_STREAM, 0);
     if (sock < 0)    
     {
         perror ("socket (client)");      
         return 1;
     }
     /* Connect to the server. */  
     name.sin_family = AF_INET;
     name.sin_port = htons (PORT);  
     name.sin_addr.s_addr = inet_addr(adres);
      
     if (0 > connect (sock,(struct sockaddr *) &name,sizeof (name)))    
     {      
             perror ("connect (client)");
             return 1;
     }  
     /* Send data to the server. */
     nbytes = write (sock, message, strlen (message));  
     if (nbytes < 0)    
     {
         perror ("write");
         return 1;
     }
     close (sock);  
     printf("launched %s at %s (%s)", message , hostname ,inet_ntoa(name.sin_addr));
     return 0;
}


  

  

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