/****************************************************************************
* examples/nettest/nettest.c
*
* Copyright (C) 2007 Gregory Nutt. All rights reserved.
* Author: Gregory Nutt <spudmonkey@racsa.co.cr>
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in
* the documentation and/or other materials provided with the
* distribution.
* 3. Neither the name Gregory Nutt nor the names of its contributors may be
* used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
* COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
* OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
* ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*
****************************************************************************/
/****************************************************************************
* Included Files
****************************************************************************/
#include <sys/types.h>
#include <sys/socket.h>
#include <netinet/in.h>
#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>
#include <errno.h>
#include "nettest.h"
/****************************************************************************
* Public Functions
****************************************************************************/
void recv_server(void)
{
struct sockaddr_in myaddr;
char buffer[1024];
int listensd;
int acceptsd;
socklen_t addrlen;
int nbytesread;
#ifndef CONFIG_NETTEST_PERFORMANCE
int totalbytesread;
int nbytessent;
int ch;
int i;
#endif
int optval;
/* Create a new TCP socket */
listensd = socket(PF_INET, SOCK_STREAM, 0);
if (listensd < 0)
{
printf("server: socket failure: %d\n", errno);
exit(1);
}
/* Set socket to reuse address */
optval = 1;
if (setsockopt(listensd, SOL_SOCKET, SO_REUSEADDR, (void*)&optval, sizeof(int)) < 0)
{
printf("server: setsockopt failure: %d\n", errno);
exit(1);
}
/* Bind the TCP socket to a local address */
myaddr.sin_family = AF_INET;
myaddr.sin_port = HTONS(PORTNO);
myaddr.sin_addr.s_addr = INADDR_ANY;
if (bind(listensd, (struct sockaddr*)&myaddr, sizeof(struct sockaddr_in)) < 0)
{
printf("server: bind failure: %d\n", errno);
exit(1);
}
/* Listen for connections on the bound TCP socket */
if (listen(listensd, 5) < 0)
{
printf("server: listen failure %d\n", errno);
exit(1);
}
/* Accept only one connection */
printf("server: Accepting connections on port %d\n", PORTNO);
addrlen = sizeof(struct sockaddr_in);
acceptsd = accept(listensd, (struct sockaddr*)&myaddr, &addrlen);
if (acceptsd < 0)
{
printf("server: accept failure: %d\n", errno);
exit(1);
}
printf("server: Connection accepted -- receiving\n");
#ifdef CONFIG_NETTEST_PERFORMANCE
/* Then receive data forever */
for (;;)
{
nbytesread = recv(acceptsd, buffer, 1024, 0);
if (nbytesread <= 0)
{
printf("server: recv failed: %d\n", errno);
close(listensd);
close(acceptsd);
exit(-1);
}
}
#else
/* Receive canned message */
totalbytesread = 0;
while (totalbytesread < SENDSIZE)
{
printf("server: Reading...\n");
nbytesread = recv(acceptsd, &buffer[totalbytesread], 1024 - totalbytesread, 0);
if (nbytesread <= 0)
{
printf("server: recv failed: %d\n", errno);
close(listensd);
close(acceptsd);
exit(-1);
}
totalbytesread += nbytesread;
printf("server: Received %d of %d bytes\n", totalbytesread, SENDSIZE);
}
/* Verify the message */
if (totalbytesread != SENDSIZE)
{
printf("server: Received %d / Expected %d bytes\n", totalbytesread, SENDSIZE);
close(listensd);
close(acceptsd);
exit(-1);
}
ch = 0x20;
for (i = 0; i < SENDSIZE; i++ )
{
if (buffer[i] != ch)
{
printf("server: Byte %d is %02x / Expected %02x\n", i, buffer[i], ch);
close(listensd);
close(acceptsd);
exit(-1);
}
if (++ch > 0x7e)
{
ch = 0x20;
}
}
/* Then send the same data back to the client */
nbytessent = send(acceptsd, buffer, totalbytesread, 0);
if (nbytessent <= 0)
{
printf("server: send failed: %d\n", errno);
close(listensd);
close(acceptsd);
exit(-1);
}
printf("server: Sent %d bytes\n", nbytessent);
close(listensd);
close(acceptsd);
#endif
}
