Thread: Peer to Peer

Hi everyone, i have written a code which is a client/server application. It is UDP connection and the program uses the system call to communicate.. I have to change this so the code in the client is connected and communicated via peer to peer system.. is anyone willing to help, it'll much appreciated..

Code:

/* 

 * Name:	  client.c

 * Author	  dalgic

 * Date Created:  2005

 * Date Modified: April 2005

 */ 





#include"user.h"

#include"comm.h"

#include"buff.h"



#define ANY_PORT 0





#define KEYBOARD 0	/* File Descriptor for Keyboard (1 = stdout, 2 = stderr) */









int main(int argc, char *argv[])

 {

  int sd;

  Id server,fromA; 

  int n,rc;

  int process_id;

  char usrtxt[80];

  int portno;









  fd_set readfds, activefds;	/* Read and Active file descriptor set. */

  int fd, nfds;			/* (Variables for Select Arguments) */



  nfds = getdtablesize();







  





  if(argc<2){                     /* check command line args */

    printf("usage : %s <server-host> [optional: server-port] \n", argv[0]);

    exit(1); 

  }



  if(argc<3) portno = SERVER_PORT;

  else portno = atoi(argv[2]);



                                 /* fill in addr. rec. for remote server*/

  hname2Addr(&server, argv[1], portno);  /* get address of the server */

  sd = getSock(ANY_PORT,SOCK_DGRAM);          /* obtain any available port */

  n = putReg();                 /* set registration message onto out buff */

  rc =out_to(sd, &server, n);       /* send out the registration request */







	/*	*	*	*	*	*/



  FD_ZERO(&activefds);

  FD_SET(sd, &activefds);

  FD_SET(KEYBOARD, &activefds);



  while(1)

  {



     memcpy(&readfds, &activefds, sizeof(readfds) );





     prompt("p:itext>>");	   /* Show User Prompt, then check for input... */





     if ( select(nfds, &readfds, (fd_set *)0, (fd_set *)0, (struct timeval *)0) < 0)

     {

	printf("Error in Select!" );	/* Error in select call */

     }





     if (FD_ISSET (KEYBOARD, &readfds) )	   /* >> Its the keybaord thats ready! */

     {



	 getTxt(usrtxt,80);                /* get text from the user */

         n = putTxt(usrtxt);               /* put it onto out buffer */

         out_to(sd, &server,n);            /* send it to the server */ 

         if(strcmp(usrtxt,"quit\n")==0)    /* termination command ! */

	    exit(1);

     }





     if (FD_ISSET (sd, &readfds) )		 /* >> Its the socket thats ready! */       

     {

         n = in_from(sd, &fromA);         /* handle incomming messages */

         if(isMsg(TAB))

         {

             saveTab();showTab();

         } 				/* based on type of msg received */ 

         else

         {                            

             showTxt();                  /* print text on screen */

             if(isText("quit\n"))

             {       /* termination command ? */

                chkExit();                  /* exit if addr. matches self Id */ 

                tabDel(getix());            /* del quitter  */



                printf("\n One member left, %d remaining",tabLen()); 

             }

	 }         



         prompt("c:itext>>");             /* keep screen tidy !*/

     }

  }



		/*	*	*	*	*	*/



  

  return 1;



}

yeh i am having problems with the code , what im tryin to do is, make this client actually connects to a server, when a message is sent it is first sent to the server, and then the server sends it out to the clients.

what i want to do is remove the point of the server, so when the client sends a message instead of going to the server > client, i want it to go straight to the clients..