Dear,

How can I use rtnet to send or receive packet in c? i am a bit confused because no examples or tutorial to build the program using rtnet while I search it in internet. i want to make a real time packet sending program and a real time packet receiver program using rtnet 0.9.12 and xenomai 2.5.4. the operating system that I use is linux fedora 13 kernel 2.6.32.11.

Is it just add some include and some lines from standard udp packet server and client program?

thanks a lot
==========================
//the standard udp packet server that I build (server.c)
#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>
#include <string.h>
#include <netinet/in.h>
#include <arpa/inet.h>
#include <sys/types.h>
#include <sys/socket.h>
#include <mqueue.h>
#include <fcntl.h>
#include <sys/stat.h>
#include <pthread.h>
#include <sys/mman.h>
#include <signal.h>
#include <limits.h>
#define PORT 7788
#define BUFLEN 65000
#define NPACK 10000000

void diep (char *s)
{
    perror (s);
    exit (1);
}

int main (void)
{
    struct sockaddr_in si_me, si_other;
    int s, i, slen=sizeof(si_other);
    char buf[BUFLEN];

    if ((s=socket(AF_INET, SOCK_DGRAM, IPPROTO_UDP))== -1)
    {
        diep("socket");
    }

    memset ((char *) &si_me, 0, sizeof(si_me));
    si_me.sin_family = AF_INET;
    si_me.sin_port = htons(PORT);
    si_me.sin_addr.s_addr = htonl(INADDR_ANY);
    if (bind(s, &si_me, sizeof(si_me)) == -1)
    {
        diep("bind");
    }

    for(i = 0; i < NPACK; i++)
    {
        if(recvfrom(s, buf, BUFLEN, 0, &si_other, &slen) == -1)
        {
            diep("recvfrom()");
        }
        printf("received packet from %s:%d\n Data: %s\n\n", inet_ntoa(si_other.sin_addr), ntohs(si_other.sin_port), buf);
    }
    close(s);
    return 0;
}

=============================
//the standard udp packet client (client.c)
#include <stdlib.h>
#include <unistd.h>
#include <string.h>
#include <netinet/in.h>
#include <arpa/inet.h>
#include <sys/types.h>
#include <sys/socket.h>
#include <mqueue.h>
#include <fcntl.h>
#include <sys/stat.h>
#include <pthread.h>
#include <sys/mman.h>
#include <signal.h>
#include <limits.h>

#define PORT 7788
#define BUFLEN 65000
#define NPACK 10000000
#define SRV_IP "167.205.34.150"

void diep (char *s)
{
    perror (s);
    exit (1);
}

int main ()
{
    struct sockaddr_in si_other;
    int s, i, slen=sizeof(si_other);
    char buf[BUFLEN];

    if((s=socket(AF_INET, SOCK_DGRAM, IPPROTO_UDP)) == -1)
    {
        diep("socket");
    }

    memset((char *) &si_other, 0, sizeof(si_other));
    si_other.sin_family=AF_INET;
    si_other.sin_port = htons(PORT);
    if(inet_aton(SRV_IP, &si_other.sin_addr)==0)
    {
        fprintf(stderr, "inet_aton () failed\n");
        exit (1);
    }

    for(i=0; i< NPACK; i++)
    {
        printf("sending packet %d\n", i);
        sprintf(buf, "This is packet %d\n",i);
        if (sendto(s, buf, BUFLEN, 0, &si_other, slen) == -1)
        {
            diep("sendto()");
        }
    }
    close(s);
return 0;
}
============================