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/****************************************************************************
* examples/udgram/udgram_client.c
*
* Copyright (C) 2015 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 <nuttx/config.h>
#include <sys/types.h>
#include <sys/socket.h>
#include <sys/un.h>
#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>
#include <string.h>
#include <errno.h>
#include "udgram.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
****************************************************************************/
#ifdef CONFIG_BUILD_KERNEL
int main(int argc, FAR char *argv[])
#else
int client_main(int argc, char *argv[])
#endif
{
struct sockaddr_un server;
unsigned char outbuf[SENDSIZE];
socklen_t addrlen;
int sockfd;
int nbytes;
int offset;
/* Create a new UDP socket */
sockfd = socket(PF_LOCAL, SOCK_DGRAM, 0);
if (sockfd < 0)
{
printf("client: ERROR socket failure %d\n", errno);
return 1;
}
/* Then send and receive 256 messages */
for (offset = 0; offset < 256; offset++)
{
/* Set up the output buffer */
fill_buffer(outbuf, offset);
/* Set up the server address */
addrlen = strlen(CONFIG_EXAMPLES_UDGRAM_ADDR);
if (addrlen > UNIX_PATH_MAX - 1)
{
addrlen = UNIX_PATH_MAX - 1;
}
server.sun_family = AF_LOCAL;
strncpy(server.sun_path, CONFIG_EXAMPLES_UDGRAM_ADDR, addrlen);
server.sun_path[addrlen] = '\0';
addrlen += sizeof(sa_family_t) + 1;
/* Send the message */
printf("client: %d. Sending %d bytes\n", offset, SENDSIZE);
nbytes = sendto(sockfd, outbuf, SENDSIZE, 0,
(struct sockaddr *)&server, addrlen);
if (nbytes < 0)
{
printf("client: %d. ERROR sendto failed: %d\n", offset, errno);
close(sockfd);
return 1;
}
else if (nbytes != SENDSIZE)
{
printf("client: %d. ERROR Bad send length: %d Expected: %d\n",
offset, nbytes, SENDSIZE);
close(sockfd);
return 1;
}
printf("client: %d. Sent %d bytes\n", offset, nbytes);
}
close(sockfd);
return 0;
}
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