8181e26325
git-svn-id: svn://svn.code.sf.net/p/nuttx/code/trunk@5211 42af7a65-404d-4744-a932-0658087f49c3
134 lines
4.1 KiB
C
134 lines
4.1 KiB
C
/****************************************************************************
|
|
* examples/udp/udp-client.c
|
|
*
|
|
* Copyright (C) 2007 Gregory Nutt. All rights reserved.
|
|
* Author: Gregory Nutt <gnutt@nuttx.org>
|
|
*
|
|
* 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 <string.h>
|
|
#include <errno.h>
|
|
|
|
#include "udp-internal.h"
|
|
|
|
/****************************************************************************
|
|
* Private Functions
|
|
****************************************************************************/
|
|
|
|
static inline void fill_buffer(unsigned char *buf, int offset)
|
|
{
|
|
int ch;
|
|
int j;
|
|
|
|
buf[0] = offset;
|
|
for (ch = 0x20, j = offset + 1; ch < 0x7f; ch++, j++)
|
|
{
|
|
if (j >= SENDSIZE)
|
|
{
|
|
j = 1;
|
|
}
|
|
buf[j] = ch;
|
|
}
|
|
}
|
|
|
|
/****************************************************************************
|
|
* Public Functions
|
|
****************************************************************************/
|
|
|
|
void send_client(void)
|
|
{
|
|
struct sockaddr_in server;
|
|
unsigned char outbuf[SENDSIZE];
|
|
int sockfd;
|
|
int nbytes;
|
|
int offset;
|
|
|
|
/* Create a new TCP socket */
|
|
|
|
sockfd = socket(PF_INET, SOCK_DGRAM, 0);
|
|
if (sockfd < 0)
|
|
{
|
|
message("client socket failure %d\n", errno);
|
|
exit(1);
|
|
}
|
|
|
|
/* Then send and receive 256 messages */
|
|
|
|
for (offset = 0; offset < 256; offset++)
|
|
{
|
|
/* Set up the output buffer */
|
|
|
|
fill_buffer(outbuf, offset);
|
|
|
|
/* Send the message */
|
|
|
|
server.sin_family = AF_INET;
|
|
server.sin_port = HTONS(PORTNO);
|
|
server.sin_addr.s_addr = HTONL(CONFIG_EXAMPLES_UDP_SERVERIP);
|
|
|
|
message("client: %d. Sending %d bytes\n", offset, SENDSIZE);
|
|
nbytes = sendto(sockfd, outbuf, SENDSIZE, 0,
|
|
(struct sockaddr*)&server, sizeof(struct sockaddr_in));
|
|
message("client: %d. Sent %d bytes\n", offset, nbytes);
|
|
|
|
if (nbytes < 0)
|
|
{
|
|
message("client: %d. sendto failed: %d\n", offset, errno);
|
|
close(sockfd);
|
|
exit(-1);
|
|
}
|
|
else if (nbytes != SENDSIZE)
|
|
{
|
|
message("client: %d. Bad send length: %d Expected: %d\n",
|
|
offset, nbytes, SENDSIZE);
|
|
close(sockfd);
|
|
exit(-1);
|
|
}
|
|
|
|
/* Now, sleep a bit. No packets should be dropped due to overrunning
|
|
* the server.
|
|
*/
|
|
|
|
sleep(2);
|
|
}
|
|
close(sockfd);
|
|
}
|