129 lines
3.5 KiB
C
129 lines
3.5 KiB
C
/****************************************************************************
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* apps/examples/udgram/udgram_client.c
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*
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* Licensed to the Apache Software Foundation (ASF) under one or more
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* contributor license agreements. See the NOTICE file distributed with
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* this work for additional information regarding copyright ownership. The
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* ASF licenses this file to you under the Apache License, Version 2.0 (the
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* "License"); you may not use this file except in compliance with the
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* License. You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
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* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
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* License for the specific language governing permissions and limitations
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* under the License.
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*
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****************************************************************************/
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/****************************************************************************
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* Included Files
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****************************************************************************/
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#include <nuttx/config.h>
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#include <sys/types.h>
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#include <sys/socket.h>
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#include <sys/un.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <unistd.h>
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#include <string.h>
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#include <errno.h>
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#include "udgram.h"
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/****************************************************************************
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* Private Functions
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****************************************************************************/
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static inline void fill_buffer(unsigned char *buf, int offset)
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{
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int ch;
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int j;
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buf[0] = offset;
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for (ch = 0x20, j = offset + 1; ch < 0x7f; ch++, j++)
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{
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if (j >= SENDSIZE)
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{
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j = 1;
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}
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buf[j] = ch;
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}
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}
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/****************************************************************************
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* Public Functions
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****************************************************************************/
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int main(int argc, FAR char *argv[])
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{
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struct sockaddr_un server;
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unsigned char outbuf[SENDSIZE];
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socklen_t addrlen;
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int sockfd;
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int nbytes;
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int offset;
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/* Create a new UDP socket */
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sockfd = socket(PF_LOCAL, SOCK_DGRAM, 0);
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if (sockfd < 0)
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{
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printf("client: ERROR socket failure %d\n", errno);
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return 1;
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}
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/* Then send and receive 256 messages */
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for (offset = 0; offset < 256; offset++)
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{
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/* Set up the output buffer */
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fill_buffer(outbuf, offset);
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/* Set up the server address */
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addrlen = sizeof(CONFIG_EXAMPLES_UDGRAM_ADDR);
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if (addrlen > UNIX_PATH_MAX)
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{
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addrlen = UNIX_PATH_MAX;
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}
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server.sun_family = AF_LOCAL;
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strlcpy(server.sun_path, CONFIG_EXAMPLES_UDGRAM_ADDR, addrlen);
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addrlen += sizeof(sa_family_t) + 1;
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/* Send the message */
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printf("client: %d. Sending %d bytes\n", offset, SENDSIZE);
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nbytes = sendto(sockfd, outbuf, SENDSIZE, 0,
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(struct sockaddr *)&server, addrlen);
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if (nbytes < 0)
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{
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printf("client: %d. ERROR sendto failed: %d\n", offset, errno);
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close(sockfd);
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return 1;
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}
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else if (nbytes != SENDSIZE)
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{
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printf("client: %d. ERROR Bad send length: %d Expected: %d\n",
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offset, nbytes, SENDSIZE);
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close(sockfd);
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return 1;
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}
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printf("client: %d. Sent %d bytes\n", offset, nbytes);
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}
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close(sockfd);
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return 0;
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}
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