/*

* Code for virtual processes

*/

////

// Include files

////

#include <stdio.h>

#include <stdlib.h>

#include <string.h>

#include <libarrays.h>

#include <libevents.h>

#include "netether.h"

#include "netip.h"

#include "stack.h"

////

// Constants

////

////

// Global variables

////

////

// Processus implementing an UDP echo

////

#define UDP_ECHO_PROMPT "> "

unsigned char udp_echo( unsigned char type, SocketAddress to,SocketAddress from, unsigned char *data,int size){

printf("\n%sudp_echo: %s type=%x\n", BMAGENTA, BLACK,type);

if(type==PROCESS_DATA){

printf("%sudp_echo: %s(%s,%hu)%s",BLUE, BBLACK, ipAddress2String(from.address),from.port, BLACK);

printf("%s->(%s,%hu)%s\n", BBLUE, ipAddress2String(to.address),to.port, BLACK);

printf("%s size : %d%s\n", BBLUE, size, BLACK);

data=(unsigned char *)realloc(data,size+2);

memmove(data+2,data,size);

memcpy(data,UDP_ECHO_PROMPT,strlen(UDP_ECHO_PROMPT));

return stackUDPSendDatagram(from.address,from.port,data,size+2);

}

/*if(type==PROCESS_ERROR){

printf("Error port unreachable : (%s,%hu)",ipAddress2String(from.address),from.port);

printf("->(%s,%hu)\n",ipAddress2String(to.address),to.port);

printf(" size : %d\n", size);

data=(unsigned char *)realloc(data,size+2);

memmove(data+2,data,size);

memcpy(data,UDP_ECHO_PROMPT,strlen(UDP_ECHO_PROMPT));

return stackUDPSendDatagram(from.address,from.port,data,size+2);

}*/

return 0;

}