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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 | /* udp.c - UDP specific code for echo server */ /* * Copyright (c) 2017 Intel Corporation. * Copyright (c) 2018 Nordic Semiconductor ASA. * * SPDX-License-Identifier: Apache-2.0 */ #include <logging/log.h> LOG_MODULE_DECLARE(net_echo_server_sample, LOG_LEVEL_DBG); #include <zephyr.h> #include <errno.h> #include <stdio.h> #include <net/socket.h> #include <net/tls_credentials.h> #include "common.h" #include "certificate.h" static void process_udp4(void); static void process_udp6(void); K_THREAD_DEFINE(udp4_thread_id, STACK_SIZE, process_udp4, NULL, NULL, NULL, THREAD_PRIORITY, 0, K_FOREVER); K_THREAD_DEFINE(udp6_thread_id, STACK_SIZE, process_udp6, NULL, NULL, NULL, THREAD_PRIORITY, 0, K_FOREVER); static int start_udp_proto(struct data *data, struct sockaddr *bind_addr, socklen_t bind_addrlen) { int ret; #if defined(CONFIG_NET_SOCKETS_SOCKOPT_TLS) data->udp.sock = socket(bind_addr->sa_family, SOCK_DGRAM, IPPROTO_DTLS_1_2); #else data->udp.sock = socket(bind_addr->sa_family, SOCK_DGRAM, IPPROTO_UDP); #endif if (data->udp.sock < 0) { NET_ERR("Failed to create UDP socket (%s): %d", data->proto, errno); return -errno; } #if defined(CONFIG_NET_SOCKETS_SOCKOPT_TLS) sec_tag_t sec_tag_list[] = { SERVER_CERTIFICATE_TAG, }; int role = 1; ret = setsockopt(data->udp.sock, SOL_TLS, TLS_SEC_TAG_LIST, sec_tag_list, sizeof(sec_tag_list)); if (ret < 0) { NET_ERR("Failed to set UDP secure option (%s): %d", data->proto, errno); ret = -errno; } /* Set role to DTLS server. */ ret = setsockopt(data->udp.sock, SOL_TLS, TLS_DTLS_ROLE, &role, sizeof(role)); if (ret < 0) { NET_ERR("Failed to set DTLS role secure option (%s): %d", data->proto, errno); ret = -errno; } #endif ret = bind(data->udp.sock, bind_addr, bind_addrlen); if (ret < 0) { NET_ERR("Failed to bind UDP socket (%s): %d", data->proto, errno); ret = -errno; } return ret; } static int process_udp(struct data *data) { int ret = 0; int received; struct sockaddr client_addr; socklen_t client_addr_len; NET_INFO("Waiting for UDP packets on port %d (%s)...", MY_PORT, data->proto); do { client_addr_len = sizeof(client_addr); received = recvfrom(data->udp.sock, data->udp.recv_buffer, sizeof(data->udp.recv_buffer), 0, &client_addr, &client_addr_len); if (received < 0) { /* Socket error */ NET_ERR("UDP (%s): Connection error %d", data->proto, errno); ret = -errno; break; } ret = sendto(data->udp.sock, data->udp.recv_buffer, received, 0, &client_addr, client_addr_len); if (ret < 0) { NET_ERR("UDP (%s): Failed to send %d", data->proto, errno); ret = -errno; break; } if (++data->udp.counter % 1000 == 0U) { NET_INFO("%s UDP: Sent %u packets", data->proto, data->udp.counter); } NET_DBG("UDP (%s): Received and replied with %d bytes", data->proto, received); } while (true); return ret; } static void process_udp4(void) { int ret; struct sockaddr_in addr4; (void)memset(&addr4, 0, sizeof(addr4)); addr4.sin_family = AF_INET; addr4.sin_port = htons(MY_PORT); ret = start_udp_proto(&conf.ipv4, (struct sockaddr *)&addr4, sizeof(addr4)); if (ret < 0) { quit(); return; } while (ret == 0) { ret = process_udp(&conf.ipv4); if (ret < 0) { quit(); } } } static void process_udp6(void) { int ret; struct sockaddr_in6 addr6; (void)memset(&addr6, 0, sizeof(addr6)); addr6.sin6_family = AF_INET6; addr6.sin6_port = htons(MY_PORT); ret = start_udp_proto(&conf.ipv6, (struct sockaddr *)&addr6, sizeof(addr6)); if (ret < 0) { quit(); return; } while (ret == 0) { ret = process_udp(&conf.ipv6); if (ret < 0) { quit(); } } } void start_udp(void) { if (IS_ENABLED(CONFIG_NET_IPV6)) { k_thread_start(udp6_thread_id); } if (IS_ENABLED(CONFIG_NET_IPV4)) { k_thread_start(udp4_thread_id); } } void stop_udp(void) { /* Not very graceful way to close a thread, but as we may be blocked * in recvfrom call it seems to be necessary */ if (IS_ENABLED(CONFIG_NET_IPV6)) { k_thread_abort(udp6_thread_id); if (conf.ipv6.udp.sock > 0) { (void)close(conf.ipv6.udp.sock); } } if (IS_ENABLED(CONFIG_NET_IPV4)) { k_thread_abort(udp4_thread_id); if (conf.ipv4.udp.sock > 0) { (void)close(conf.ipv4.udp.sock); } } } |