6bc7a448de
Gregory Nutt is has submitted the SGA as a result we can migrate the licenses to Apache. Signed-off-by: Alin Jerpelea <alin.jerpelea@sony.com>
215 lines
6.1 KiB
C
215 lines
6.1 KiB
C
/****************************************************************************
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* examples/udp/udp_server.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 "config.h"
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#include <sys/socket.h>
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#include <netinet/in.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 <arpa/inet.h>
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#include "udp.h"
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/****************************************************************************
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* Private Functions
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****************************************************************************/
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static inline int check_buffer(unsigned char *buf)
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{
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int ret = 1;
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int offset;
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int ch;
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int j;
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offset = buf[0];
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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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if (buf[j] != ch)
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{
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printf("server: Buffer content error for offset=%d, index=%d\n",
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offset, j);
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ret = 0;
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}
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}
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return ret;
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}
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/****************************************************************************
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* Public Functions
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****************************************************************************/
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void udp_server(void)
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{
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#ifdef CONFIG_EXAMPLES_UDP_IPv6
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struct sockaddr_in6 server;
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struct sockaddr_in6 client;
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#else
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struct sockaddr_in server;
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struct sockaddr_in client;
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in_addr_t tmpaddr;
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#endif
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unsigned char inbuf[1024];
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socklen_t addrlen;
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socklen_t recvlen;
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int sockfd;
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int nbytes;
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int optval;
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int offset;
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#ifdef CONFIG_EXAMPLES_UDP_BROADCAST
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int ret;
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#endif
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/* Create a new UDP socket */
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sockfd = socket(PF_INETX, SOCK_DGRAM, 0);
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if (sockfd < 0)
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{
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printf("server: socket failure: %d\n", errno);
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exit(1);
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}
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/* Set socket to reuse address */
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optval = 1;
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if (setsockopt(sockfd, SOL_SOCKET, SO_REUSEADDR, (void *)&optval,
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sizeof(int)) < 0)
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{
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printf("server: setsockopt SO_REUSEADDR failure: %d\n", errno);
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exit(1);
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}
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#ifdef CONFIG_EXAMPLES_UDP_BROADCAST
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optval = 1;
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ret = setsockopt(sockfd, SOL_SOCKET, SO_BROADCAST, &optval, sizeof(int));
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if (ret < 0)
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{
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printf("Failed to set SO_BROADCAST\n");
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exit(1);
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}
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#endif
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/* Bind the socket to a local address */
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#ifdef CONFIG_EXAMPLES_UDP_IPv6
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server.sin6_family = AF_INET6;
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server.sin6_port = HTONS(CONFIG_EXAMPLES_UDP_SERVER_PORTNO);
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memset(&server.sin6_addr, 0, sizeof(struct in6_addr));
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addrlen = sizeof(struct sockaddr_in6);
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#else
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server.sin_family = AF_INET;
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server.sin_port = HTONS(CONFIG_EXAMPLES_UDP_SERVER_PORTNO);
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server.sin_addr.s_addr = HTONL(INADDR_ANY);
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addrlen = sizeof(struct sockaddr_in);
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#endif
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if (bind(sockfd, (struct sockaddr *)&server, addrlen) < 0)
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{
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printf("server: bind failure: %d\n", errno);
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exit(1);
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}
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/* Then receive up to 256 packets of data */
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for (offset = 0; offset < 256; offset++)
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{
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printf("server: %d. Receiving up 1024 bytes\n", offset);
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recvlen = addrlen;
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nbytes = recvfrom(sockfd, inbuf, 1024, 0,
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(struct sockaddr *)&client, &recvlen);
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#ifdef CONFIG_EXAMPLES_UDP_IPv6
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printf("server: %d. Received %d bytes from "
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"%02x%02x:%02x%02x:%02x%02x:%02x%02x:"
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"%02x%02x:%02x%02x:%02x%02x:%02x%02x port %d\n",
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offset, nbytes,
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client.sin6_addr.s6_addr[0], client.sin6_addr.s6_addr[1],
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client.sin6_addr.s6_addr[2], client.sin6_addr.s6_addr[3],
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client.sin6_addr.s6_addr[4], client.sin6_addr.s6_addr[5],
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client.sin6_addr.s6_addr[6], client.sin6_addr.s6_addr[7],
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client.sin6_addr.s6_addr[8], client.sin6_addr.s6_addr[9],
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client.sin6_addr.s6_addr[10], client.sin6_addr.s6_addr[11],
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client.sin6_addr.s6_addr[12], client.sin6_addr.s6_addr[13],
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client.sin6_addr.s6_addr[14], client.sin6_addr.s6_addr[15],
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ntohs(client.sin6_port));
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#else
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tmpaddr = ntohl(client.sin_addr.s_addr);
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printf("server: %d. Received %d bytes from %d.%d.%d.%d:%d\n",
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offset, nbytes,
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tmpaddr >> 24, (tmpaddr >> 16) & 0xff,
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(tmpaddr >> 8) & 0xff, tmpaddr & 0xff,
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ntohs(client.sin_port));
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#endif
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if (nbytes < 0)
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{
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printf("server: %d. recv failed: %d\n", offset, errno);
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close(sockfd);
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exit(-1);
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}
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if (nbytes != SENDSIZE)
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{
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printf("server: %d. recv size incorrect: %d vs %d\n", offset,
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nbytes, SENDSIZE);
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close(sockfd);
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exit(-1);
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}
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if (offset < inbuf[0])
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{
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printf("server: %d. %d packets lost, resetting offset\n", offset,
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inbuf[0] - offset);
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offset = inbuf[0];
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}
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else if (offset > inbuf[0])
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{
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printf("server: %d. Bad offset in buffer: %d\n", offset, inbuf[0]);
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close(sockfd);
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exit(-1);
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}
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if (!check_buffer(inbuf))
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{
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printf("server: %d. Bad buffer contents\n", offset);
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close(sockfd);
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exit(-1);
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}
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}
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close(sockfd);
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}
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