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/*
* Test RTEMS networking
*
* This program may be distributed and used for any purpose.
* I ask only that you:
* 1. Leave this author information intact.
* 2. Document any changes you make.
*
* W. Eric Norum
* Saskatchewan Accelerator Laboratory
* University of Saskatchewan
* Saskatoon, Saskatchewan, CANADA
* eric@skatter.usask.ca
*/
#include <stdio.h>
#include <string.h>
#include <errno.h>
#include <unistd.h>
#include <rtems.h>
#include <rtems/rtems_bsdnet.h>
#include <rtems/error.h>
#include <sys/types.h>
#include <sys/socket.h>
#include <sys/select.h>
#include <netinet/in.h>
#define BASE_PORT 24742
#define CLIENT_COUNT 2
static int clientfd[CLIENT_COUNT];
static void
getClients (unsigned short port)
{
int s, s1;
struct sockaddr_in myAddr, farAddr;
socklen_t addrlen;
int clientCount;
printf ("Create socket.\n");
s = socket (AF_INET, SOCK_STREAM, 0);
if (s < 0)
rtems_panic ("Can't create socket: %s", strerror (errno));
myAddr.sin_family = AF_INET;
myAddr.sin_port = htons (port);
myAddr.sin_addr.s_addr = INADDR_ANY;
memset (myAddr.sin_zero, '\0', sizeof myAddr.sin_zero);
printf ("Bind socket.\n");
if (bind (s, (struct sockaddr *)&myAddr, sizeof myAddr) < 0)
rtems_panic ("Can't bind socket: %s", strerror (errno));
printf ("Listen.\n");
if (listen (s, 2) < 0)
rtems_panic ("Can't listen on socket: %s", strerror (errno));
/*
* Accumulate clients
*/
for (clientCount = 0 ; clientCount < CLIENT_COUNT ; clientCount++) {
printf ("Accept.\n");
addrlen = sizeof farAddr;
s1 = accept (s, (struct sockaddr *)&farAddr, &addrlen);
if (s1 < 0)
rtems_panic ("Can't accept connection: %s", strerror (errno));
else
printf ("ACCEPTED:%lX\n", ntohl (farAddr.sin_addr.s_addr));
clientfd[clientCount] = s1;
}
close (s);
}
static void
echoServer (unsigned short port)
{
fd_set clientfdset;
int clientCount;
int topfd = 0;
getClients (port);
FD_ZERO (&clientfdset);
for (clientCount = 0 ; clientCount < CLIENT_COUNT ; clientCount++) {
int s1;
s1 = clientfd[clientCount];
FD_SET (s1, &clientfdset);
if (s1 > topfd)
topfd = s1;
}
/*
* Run clients
*/
for (;;) {
fd_set readfdset;
struct timeval tv;
int n;
int i;
tv.tv_sec = 5;
tv.tv_usec = 0;
readfdset = clientfdset;
n = select (topfd + 1, &readfdset, NULL, NULL, &tv);
if (n < 0) {
printf ("Select() error: %s\n", strerror (errno));
return;
}
if (n == 0) {
printf ("Timeout\n");
continue;
}
printf ("Activity on %d file descriptor%s.\n", n, n == 1 ? "" : "s");
for (i = 0 ; n && (i < CLIENT_COUNT) ; i++) {
int fd = clientfd[i];
if (FD_ISSET (fd, &readfdset)) {
char buf[200];
int nread;
printf ("Activity on file descriptor %d.\n", fd);
n--;
nread = read (fd, buf, sizeof buf);
if (nread < 0) {
printf ("Read error %s.\n", strerror (errno));
return;
}
if (nread == 0) {
printf ("EOF\n");
FD_CLR (fd, &clientfdset);
close (fd);
if (--clientCount == 0)
return;
}
printf ("Read %d.\n", nread);
}
}
}
}
void
doSocket (void)
{
echoServer (BASE_PORT);
}
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