Ashley Mills / Mbed 2 deprecated tinydtls_test_ethernet

Ethernet test for tinydtls-0.5.0

Dependencies:   EthernetInterface mbed-rtos mbed tinydtls

Fork of tinydtls_test_ethernet by Ashley Mills

main.cpp@2:21019cad4c93, 2013-10-10 (annotated)

Committer:
ashleymills
Date:
Thu Oct 10 22:07:32 2013 +0000
Revision:
2:21019cad4c93
Parent:
1:391ec57807fa
Child:
3:0caeed7fd9f0
init.

Who changed what in which revision?

UserRevisionLine numberNew contents of line
ashleymills 1:391ec57807fa 1 #define __DEBUG__ 4
ashleymills 1:391ec57807fa 2
ashleymills 1:391ec57807fa 3 #ifndef __MODULE__
ashleymills 1:391ec57807fa 4 #define __MODULE__ "main.cpp"
ashleymills 1:391ec57807fa 5 #endif
ashleymills 1:391ec57807fa 6
ashleymills 0:6ae42a2aff75 7 #include "mbed.h"
ashleymills 0:6ae42a2aff75 8 #include "rtos.h"
ashleymills 0:6ae42a2aff75 9 #include "bsd_socket.h"
ashleymills 0:6ae42a2aff75 10
ashleymills 1:391ec57807fa 11 #include <dtls.h>
ashleymills 1:391ec57807fa 12 #include "global.h"
ashleymills 1:391ec57807fa 13 #include "debug.h"
ashleymills 1:391ec57807fa 14 #include "errno.h"
ashleymills 1:391ec57807fa 15 #include "dbg.h"
ashleymills 1:391ec57807fa 16
ashleymills 1:391ec57807fa 17 #include "EthernetInterface.h"
ashleymills 0:6ae42a2aff75 18 DigitalOut myled(LED1);
ashleymills 0:6ae42a2aff75 19
ashleymills 1:391ec57807fa 20 void fail(int code) {
ashleymills 1:391ec57807fa 21 while(1) {
ashleymills 1:391ec57807fa 22 myled = !myled;
ashleymills 1:391ec57807fa 23 Thread::wait(100);
ashleymills 1:391ec57807fa 24 }
ashleymills 1:391ec57807fa 25 }
ashleymills 1:391ec57807fa 26
ashleymills 1:391ec57807fa 27 /* This function is the "key store" for tinyDTLS. It is called to
ashleymills 1:391ec57807fa 28 * retrieve a key for the given identiy within this particular
ashleymills 1:391ec57807fa 29 * session. */
ashleymills 1:391ec57807fa 30 int
ashleymills 1:391ec57807fa 31 get_key(struct dtls_context_t *ctx,
ashleymills 1:391ec57807fa 32 const session_t *session,
ashleymills 1:391ec57807fa 33 const unsigned char *id, size_t id_len,
ashleymills 1:391ec57807fa 34 const dtls_key_t **result) {
ashleymills 1:391ec57807fa 35 DBG("Entered get_key");
ashleymills 1:391ec57807fa 36
ashleymills 1:391ec57807fa 37 static const dtls_key_t psk = {
ashleymills 1:391ec57807fa 38 .type = DTLS_KEY_PSK,
ashleymills 1:391ec57807fa 39 .key.psk.id = (unsigned char *)"Client_identity",
ashleymills 1:391ec57807fa 40 .key.psk.id_length = 15,
ashleymills 1:391ec57807fa 41 .key.psk.key = (unsigned char *)"secretPSK",
ashleymills 1:391ec57807fa 42 .key.psk.key_length = 9
ashleymills 1:391ec57807fa 43 };
ashleymills 1:391ec57807fa 44
ashleymills 1:391ec57807fa 45 *result = &psk;
ashleymills 1:391ec57807fa 46 return 0;
ashleymills 1:391ec57807fa 47 }
ashleymills 1:391ec57807fa 48
ashleymills 1:391ec57807fa 49 #define APN_GDSP
ashleymills 1:391ec57807fa 50 //#define APN_CONTRACT
ashleymills 1:391ec57807fa 51
ashleymills 1:391ec57807fa 52 #ifdef APN_GDSP
ashleymills 1:391ec57807fa 53 #define APN "ppinternetd.gdsp"
ashleymills 1:391ec57807fa 54 #define APN_USERNAME ""
ashleymills 1:391ec57807fa 55 #define APN_PASSWORD ""
ashleymills 1:391ec57807fa 56 #endif
ashleymills 1:391ec57807fa 57
ashleymills 1:391ec57807fa 58 #ifdef APN_CONTRACT
ashleymills 1:391ec57807fa 59 #define APN "internet"
ashleymills 1:391ec57807fa 60 #define APN_USERNAME "web"
ashleymills 1:391ec57807fa 61 #define APN_PASSWORD "web"
ashleymills 1:391ec57807fa 62 #endif
ashleymills 1:391ec57807fa 63
ashleymills 1:391ec57807fa 64 /* stolen from libcoap: */
ashleymills 1:391ec57807fa 65 int
ashleymills 1:391ec57807fa 66 resolve_address(const char *server, struct sockaddr *dst) {
ashleymills 1:391ec57807fa 67
ashleymills 1:391ec57807fa 68 struct addrinfo *res, *ainfo;
ashleymills 1:391ec57807fa 69 struct addrinfo hints;
ashleymills 1:391ec57807fa 70 static char addrstr[256];
ashleymills 1:391ec57807fa 71 int error;
ashleymills 1:391ec57807fa 72
ashleymills 1:391ec57807fa 73 memset(addrstr, 0, sizeof(addrstr));
ashleymills 1:391ec57807fa 74 if (server && strlen(server) > 0)
ashleymills 1:391ec57807fa 75 memcpy(addrstr, server, strlen(server));
ashleymills 1:391ec57807fa 76 else
ashleymills 1:391ec57807fa 77 memcpy(addrstr, "localhost", 9);
ashleymills 1:391ec57807fa 78
ashleymills 1:391ec57807fa 79 memset ((char *)&hints, 0, sizeof(hints));
ashleymills 1:391ec57807fa 80 hints.ai_socktype = SOCK_DGRAM;
ashleymills 1:391ec57807fa 81 hints.ai_family = AF_UNSPEC;
ashleymills 1:391ec57807fa 82
ashleymills 1:391ec57807fa 83 error = getaddrinfo(addrstr, "", &hints, &res);
ashleymills 1:391ec57807fa 84
ashleymills 1:391ec57807fa 85 if (error != 0) {
ashleymills 1:391ec57807fa 86 DBG("Some bullshit error");//fprintf(stderr, "getaddrinfo: %s\n", gai_strerror(error));
ashleymills 1:391ec57807fa 87 return error;
ashleymills 1:391ec57807fa 88 }
ashleymills 1:391ec57807fa 89
ashleymills 1:391ec57807fa 90 for (ainfo = res; ainfo != NULL; ainfo = ainfo->ai_next) {
ashleymills 1:391ec57807fa 91
ashleymills 1:391ec57807fa 92 switch (ainfo->ai_family) {
ashleymills 1:391ec57807fa 93 case AF_INET:
ashleymills 1:391ec57807fa 94
ashleymills 1:391ec57807fa 95 memcpy(dst, ainfo->ai_addr, ainfo->ai_addrlen);
ashleymills 1:391ec57807fa 96 return ainfo->ai_addrlen;
ashleymills 1:391ec57807fa 97 default:
ashleymills 1:391ec57807fa 98 ;
ashleymills 1:391ec57807fa 99 }
ashleymills 1:391ec57807fa 100 }
ashleymills 1:391ec57807fa 101
ashleymills 1:391ec57807fa 102 freeaddrinfo(res);
ashleymills 1:391ec57807fa 103 return -1;
ashleymills 1:391ec57807fa 104 }
ashleymills 1:391ec57807fa 105
ashleymills 1:391ec57807fa 106
ashleymills 1:391ec57807fa 107 sockaddr_in bindAddr,serverAddress;
ashleymills 1:391ec57807fa 108 bool connectToSocketUDP(char *ipAddress, int port, int *sockfd) {
ashleymills 1:391ec57807fa 109 *sockfd = -1;
ashleymills 1:391ec57807fa 110 // create the socket
ashleymills 1:391ec57807fa 111 if((*sockfd=socket(AF_INET,SOCK_DGRAM,0))<0) {
ashleymills 1:391ec57807fa 112 DBG("Error opening socket");
ashleymills 1:391ec57807fa 113 return false;
ashleymills 1:391ec57807fa 114 }
ashleymills 1:391ec57807fa 115 socklen_t sockAddrInLen = sizeof(struct sockaddr_in);
ashleymills 1:391ec57807fa 116
ashleymills 1:391ec57807fa 117 // bind socket
ashleymills 1:391ec57807fa 118 memset(&bindAddr, 0x00, sockAddrInLen);
ashleymills 1:391ec57807fa 119 bindAddr.sin_family = AF_INET; // IP family
ashleymills 1:391ec57807fa 120 bindAddr.sin_port = htons(port);
ashleymills 1:391ec57807fa 121 bindAddr.sin_addr.s_addr = IPADDR_ANY; // 32 bit IP representation
ashleymills 1:391ec57807fa 122 // call bind
ashleymills 1:391ec57807fa 123 if(bind(*sockfd,(const struct sockaddr *)&bindAddr,sockAddrInLen)!=0) {
ashleymills 1:391ec57807fa 124 DBG("Error binding socket");
ashleymills 1:391ec57807fa 125 perror(NULL);
ashleymills 1:391ec57807fa 126 }
ashleymills 1:391ec57807fa 127
ashleymills 1:391ec57807fa 128 INFO("UDP socket created and bound to: %s:%d",inet_ntoa(bindAddr.sin_addr),ntohs(bindAddr.sin_port));
ashleymills 1:391ec57807fa 129
ashleymills 1:391ec57807fa 130 // create the socket address
ashleymills 1:391ec57807fa 131 memset(&serverAddress, 0x00, sizeof(struct sockaddr_in));
ashleymills 1:391ec57807fa 132 serverAddress.sin_addr.s_addr = inet_addr(ipAddress);
ashleymills 1:391ec57807fa 133 serverAddress.sin_family = AF_INET;
ashleymills 1:391ec57807fa 134 serverAddress.sin_port = htons(port);
ashleymills 1:391ec57807fa 135
ashleymills 1:391ec57807fa 136 // do socket connect
ashleymills 1:391ec57807fa 137 //LOG("Connecting socket to %s:%d", inet_ntoa(serverAddress.sin_addr), ntohs(serverAddress.sin_port));
ashleymills 1:391ec57807fa 138 if(connect(*sockfd, (const struct sockaddr *)&serverAddress, sizeof(serverAddress))<0) {
ashleymills 1:391ec57807fa 139 shutdown(*sockfd,SHUT_RDWR);
ashleymills 1:391ec57807fa 140 close(*sockfd);
ashleymills 1:391ec57807fa 141 DBG("Could not connect");
ashleymills 1:391ec57807fa 142 return false;
ashleymills 1:391ec57807fa 143 }
ashleymills 1:391ec57807fa 144 return true;
ashleymills 1:391ec57807fa 145 }
ashleymills 1:391ec57807fa 146
ashleymills 1:391ec57807fa 147 int read_from_peer(struct dtls_context_t *ctx, session_t *session, uint8 *data, size_t len) {
ashleymills 1:391ec57807fa 148 DBG("read_from_peer called");
ashleymills 1:391ec57807fa 149 size_t i;
ashleymills 1:391ec57807fa 150 for (i = 0; i < len; i++)
ashleymills 1:391ec57807fa 151 printf("%c", data[i]);
ashleymills 1:391ec57807fa 152 return 0;
ashleymills 1:391ec57807fa 153 }
ashleymills 1:391ec57807fa 154
ashleymills 1:391ec57807fa 155 int send_to_peer(struct dtls_context_t *ctx, session_t *session, uint8 *data, size_t len) {
ashleymills 1:391ec57807fa 156 DBG("send_to_peer called");
ashleymills 1:391ec57807fa 157 int fd = *(int *)dtls_get_app_data(ctx);
ashleymills 1:391ec57807fa 158 return sendto(fd, data, len, MSG_DONTWAIT,
ashleymills 1:391ec57807fa 159 &session->addr.sa, session->size);
ashleymills 1:391ec57807fa 160 }
ashleymills 1:391ec57807fa 161
ashleymills 1:391ec57807fa 162
ashleymills 1:391ec57807fa 163 int
ashleymills 1:391ec57807fa 164 dtls_handle_read(struct dtls_context_t *ctx) {
ashleymills 1:391ec57807fa 165 DBG("dtls_handle_read called");
ashleymills 1:391ec57807fa 166 int fd;
ashleymills 1:391ec57807fa 167 session_t session;
ashleymills 1:391ec57807fa 168 #define MAX_READ_BUF 512
ashleymills 1:391ec57807fa 169 static uint8 buf[MAX_READ_BUF];
ashleymills 1:391ec57807fa 170 int len;
ashleymills 1:391ec57807fa 171
ashleymills 1:391ec57807fa 172 fd = *(int *)dtls_get_app_data(ctx);
ashleymills 1:391ec57807fa 173 /*
ashleymills 1:391ec57807fa 174 if(!fd) {
ashleymills 1:391ec57807fa 175 DBG("FD NULL");
ashleymills 1:391ec57807fa 176 return -1;
ashleymills 1:391ec57807fa 177 }*/
ashleymills 1:391ec57807fa 178
ashleymills 1:391ec57807fa 179 memset(&session, 0x00, sizeof(session_t));
ashleymills 1:391ec57807fa 180 DBG("BEFORE: ");
ashleymills 1:391ec57807fa 181 for(uint8_t i=0; i<sizeof(session_t); i++) {
ashleymills 1:391ec57807fa 182 DBGX("%x ",((uint8_t*)&session)[i]);
ashleymills 1:391ec57807fa 183 }
ashleymills 1:391ec57807fa 184 DBGX("\r\n");
ashleymills 1:391ec57807fa 185 session.size = sizeof(sockaddr_in);
ashleymills 1:391ec57807fa 186 uint32_t bullshit = sizeof(sockaddr_in);
ashleymills 1:391ec57807fa 187 len = recvfrom(fd, buf, MAX_READ_BUF, 0,
ashleymills 1:391ec57807fa 188 &session.addr.sa, &bullshit);
ashleymills 1:391ec57807fa 189
ashleymills 1:391ec57807fa 190 //((uint8_t*)&session)[4] = 0x00;
ashleymills 1:391ec57807fa 191 //session.addr.sin.sin_family = AF_INET;
ashleymills 1:391ec57807fa 192 DBG("AFTER: %d",bullshit);
ashleymills 1:391ec57807fa 193 for(uint8_t i=0; i<sizeof(session_t); i++) {
ashleymills 1:391ec57807fa 194 DBGX("%x ",((uint8_t*)&session)[i]);
ashleymills 1:391ec57807fa 195 }
ashleymills 1:391ec57807fa 196 DBGX("\r\n");
ashleymills 1:391ec57807fa 197 short x = session.addr.sin.sin_family;
ashleymills 1:391ec57807fa 198 if(session.addr.sin.sin_family==AF_INET) {
ashleymills 1:391ec57807fa 199 DBG("AF_INET alright");
ashleymills 1:391ec57807fa 200 }
ashleymills 1:391ec57807fa 201 DBG("%x %x",((uint8_t*)x)[0],((uint8_t*)x)[1]);
ashleymills 1:391ec57807fa 202 if (len < 0) {
ashleymills 1:391ec57807fa 203 DBG("Got nothing from read");
ashleymills 1:391ec57807fa 204 perror("recvfrom");
ashleymills 1:391ec57807fa 205 return -1;
ashleymills 1:391ec57807fa 206 } else {
ashleymills 1:391ec57807fa 207 #ifndef NDEBUG
ashleymills 1:391ec57807fa 208 unsigned char addrbuf[72];
ashleymills 1:391ec57807fa 209 dsrv_print_addr(&session, addrbuf, sizeof(addrbuf));
ashleymills 1:391ec57807fa 210 DBG("got %d bytes from %s\n", len, (char *)addrbuf);
ashleymills 1:391ec57807fa 211 dump((unsigned char *)&session, sizeof(session_t));
ashleymills 1:391ec57807fa 212 DBGX("\r\n");
ashleymills 1:391ec57807fa 213 dump(buf, len);
ashleymills 1:391ec57807fa 214 DBGX("\r\n");
ashleymills 1:391ec57807fa 215 #endif
ashleymills 1:391ec57807fa 216 }
ashleymills 1:391ec57807fa 217
ashleymills 1:391ec57807fa 218 return dtls_handle_message(ctx, &session, buf, len);
ashleymills 1:391ec57807fa 219 }
ashleymills 1:391ec57807fa 220
ashleymills 1:391ec57807fa 221 static dtls_handler_t cb = {
ashleymills 1:391ec57807fa 222 .write = send_to_peer,
ashleymills 1:391ec57807fa 223 .read = read_from_peer,
ashleymills 1:391ec57807fa 224 .event = NULL,
ashleymills 1:391ec57807fa 225 .get_key = get_key
ashleymills 1:391ec57807fa 226 };
ashleymills 1:391ec57807fa 227
ashleymills 0:6ae42a2aff75 228 int main() {
ashleymills 1:391ec57807fa 229 DBG_INIT();
ashleymills 1:391ec57807fa 230 DBG_SET_SPEED(115200);
ashleymills 1:391ec57807fa 231 DBG_SET_NEWLINE("\r\n");
ashleymills 1:391ec57807fa 232
ashleymills 1:391ec57807fa 233 DBG("Tiny DTLS test");
ashleymills 1:391ec57807fa 234
ashleymills 1:391ec57807fa 235 // DTLS context struct
ashleymills 1:391ec57807fa 236 dtls_context_t *dtls_context = NULL;
ashleymills 1:391ec57807fa 237 int ret = 0;
ashleymills 1:391ec57807fa 238 fd_set rfds, wfds;
ashleymills 1:391ec57807fa 239 struct timeval timeout;
ashleymills 1:391ec57807fa 240 session_t dst;
ashleymills 1:391ec57807fa 241
ashleymills 1:391ec57807fa 242 // structure for getting address of incoming packets
ashleymills 1:391ec57807fa 243 sockaddr_in fromAddr;
ashleymills 1:391ec57807fa 244 socklen_t fromAddrLen = sizeof(struct sockaddr_in);
ashleymills 1:391ec57807fa 245 memset(&fromAddr,0x00,fromAddrLen);
ashleymills 1:391ec57807fa 246
ashleymills 1:391ec57807fa 247 // connect to cellular network
ashleymills 1:391ec57807fa 248 /*
ashleymills 1:391ec57807fa 249 VodafoneUSBModem modem;
ashleymills 1:391ec57807fa 250 modem.connect(APN,APN_USERNAME,APN_PASSWORD);
ashleymills 1:391ec57807fa 251 */
ashleymills 1:391ec57807fa 252 EthernetInterface modem;
ashleymills 1:391ec57807fa 253 DBG("Connecting to network interface");
ashleymills 1:391ec57807fa 254 modem.init();
ashleymills 1:391ec57807fa 255 if(modem.connect(10000)) {
ashleymills 1:391ec57807fa 256 DBG("Error initialising ethernet interface");
ashleymills 1:391ec57807fa 257 }
ashleymills 1:391ec57807fa 258 DBG("DONE.");
ashleymills 1:391ec57807fa 259
ashleymills 1:391ec57807fa 260 dtls_init();
ashleymills 1:391ec57807fa 261 dtls_set_log_level(LOG_DEBUG);
ashleymills 1:391ec57807fa 262
ashleymills 1:391ec57807fa 263 // setup socket to remote server
ashleymills 1:391ec57807fa 264 int sockfd = NULL;
ashleymills 1:391ec57807fa 265
ashleymills 1:391ec57807fa 266
ashleymills 2:21019cad4c93 267 if(!connectToSocketUDP("109.74.199.96", 4433, &sockfd)) {
ashleymills 2:21019cad4c93 268 //if(!connectToSocketUDP("192.168.1.99", 4433, &sockfd)) {
ashleymills 1:391ec57807fa 269 DBG("Error connecting to socket");
ashleymills 1:391ec57807fa 270 fail(1);
ashleymills 0:6ae42a2aff75 271 }
ashleymills 1:391ec57807fa 272 DBG("\"Connected\" to UDP socket, sockfd: %d",sockfd);
ashleymills 1:391ec57807fa 273 /*
ashleymills 1:391ec57807fa 274 int on = 1;
ashleymills 1:391ec57807fa 275 if(setsockopt(sockfd, SOL_SOCKET, SO_REUSEADDR, &on, sizeof(on) ) < 0) {
ashleymills 1:391ec57807fa 276 dsrv_log(LOG_ALERT, "setsockopt SO_REUSEADDR: %s\n", strerror(errno));
ashleymills 1:391ec57807fa 277 }*/
ashleymills 1:391ec57807fa 278
ashleymills 1:391ec57807fa 279 /*
ashleymills 1:391ec57807fa 280 memset(&dst, 0, sizeof(session_t));
ashleymills 1:391ec57807fa 281 // resolve destination address where server should be sent
ashleymills 1:391ec57807fa 282 //int res = resolve_address("192.168.1.99", &dst.addr.sa);
ashleymills 1:391ec57807fa 283 int res = resolve_address("109.74.199.96", &dst.addr.sa);
ashleymills 1:391ec57807fa 284 if (res < 0) {
ashleymills 1:391ec57807fa 285 dsrv_log(LOG_EMERG, "failed to resolve address\n");
ashleymills 1:391ec57807fa 286 fail(9);
ashleymills 1:391ec57807fa 287 }
ashleymills 1:391ec57807fa 288 dst.size = res;
ashleymills 1:391ec57807fa 289
ashleymills 1:391ec57807fa 290 // use port number from command line when specified or the listen port, otherwise
ashleymills 1:391ec57807fa 291 dst.addr.sin.sin_port = htons(4433);//atoi(optind < argc ? argv[optind++] : port_str));
ashleymills 1:391ec57807fa 292
ashleymills 1:391ec57807fa 293 // init socket and set it to non-blocking
ashleymills 1:391ec57807fa 294 sockfd = socket(dst.addr.sa.sa_family, SOCK_DGRAM, 0);
ashleymills 1:391ec57807fa 295 if (sockfd < 0) {
ashleymills 1:391ec57807fa 296 dsrv_log(LOG_ALERT, "socket: %s\n", strerror(errno));
ashleymills 1:391ec57807fa 297 return 0;
ashleymills 1:391ec57807fa 298 }*/
ashleymills 1:391ec57807fa 299
ashleymills 1:391ec57807fa 300 // tinydtls stuff
ashleymills 1:391ec57807fa 301
ashleymills 1:391ec57807fa 302 // destination address is stored in a session type
ashleymills 1:391ec57807fa 303
ashleymills 1:391ec57807fa 304 memset(&dst, 0x00, sizeof(session_t));
ashleymills 1:391ec57807fa 305 dst.size = sizeof(sockaddr_in);
ashleymills 1:391ec57807fa 306 DBG("starting copy at offset: %d",(int)&dst.addr-(int)&dst);
ashleymills 1:391ec57807fa 307 serverAddress.sin_len = dst.size;
ashleymills 1:391ec57807fa 308 memcpy(&dst.addr, &serverAddress, dst.size);
ashleymills 1:391ec57807fa 309
ashleymills 1:391ec57807fa 310
ashleymills 1:391ec57807fa 311 //dst.addr.sin.sin_port = htons(4433);
ashleymills 1:391ec57807fa 312
ashleymills 1:391ec57807fa 313 // dtls init must always be called for memory allocation
ashleymills 1:391ec57807fa 314
ashleymills 1:391ec57807fa 315 // setup DTLS context
ashleymills 1:391ec57807fa 316 DBG("Creating DTLS context");
ashleymills 1:391ec57807fa 317 dtls_context = dtls_new_context(&sockfd);
ashleymills 1:391ec57807fa 318 if(!dtls_context) {
ashleymills 1:391ec57807fa 319 DBG("Cannot create context");
ashleymills 1:391ec57807fa 320 fail(3);
ashleymills 1:391ec57807fa 321 }
ashleymills 1:391ec57807fa 322 DBG("DTLS context created");
ashleymills 1:391ec57807fa 323
ashleymills 1:391ec57807fa 324 // forced to use this call back system
ashleymills 1:391ec57807fa 325
ashleymills 1:391ec57807fa 326 dtls_set_handler(dtls_context, &cb);
ashleymills 1:391ec57807fa 327
ashleymills 1:391ec57807fa 328 DBG("Issuing dtls_connect");
ashleymills 1:391ec57807fa 329 ret = dtls_connect(dtls_context, &dst);
ashleymills 1:391ec57807fa 330 if(ret<0) {
ashleymills 1:391ec57807fa 331 DBG("Error in dtls_connect: %d",ret);
ashleymills 1:391ec57807fa 332 modem.disconnect();
ashleymills 1:391ec57807fa 333 fail(4);
ashleymills 1:391ec57807fa 334 }
ashleymills 1:391ec57807fa 335 if(ret==0) {
ashleymills 1:391ec57807fa 336 DBG("Channel already exists");
ashleymills 1:391ec57807fa 337 modem.disconnect();
ashleymills 1:391ec57807fa 338 fail(5);
ashleymills 1:391ec57807fa 339 }
ashleymills 1:391ec57807fa 340 DBG("dtls_connect successfull");
ashleymills 1:391ec57807fa 341 while (1) {
ashleymills 1:391ec57807fa 342 // setup file descriptor lists for select
ashleymills 1:391ec57807fa 343 FD_ZERO(&rfds);
ashleymills 1:391ec57807fa 344 FD_ZERO(&wfds);
ashleymills 1:391ec57807fa 345 //FD_SET(fileno(stdin), &rfds);
ashleymills 1:391ec57807fa 346 FD_SET(sockfd, &rfds);
ashleymills 1:391ec57807fa 347 // FD_SET(sockfd, &wfds);
ashleymills 1:391ec57807fa 348
ashleymills 1:391ec57807fa 349 timeout.tv_sec = 5;
ashleymills 1:391ec57807fa 350 timeout.tv_usec = 0;
ashleymills 1:391ec57807fa 351
ashleymills 1:391ec57807fa 352 int result = select(sockfd+1, &rfds, &wfds, 0, &timeout);
ashleymills 1:391ec57807fa 353
ashleymills 1:391ec57807fa 354 if(result < 0) { // error
ashleymills 1:391ec57807fa 355 if (errno != EINTR)
ashleymills 1:391ec57807fa 356 perror("select");
ashleymills 1:391ec57807fa 357 } else if (result == 0) {
ashleymills 1:391ec57807fa 358 // timeout
ashleymills 1:391ec57807fa 359 } else {
ashleymills 1:391ec57807fa 360 // OK
ashleymills 1:391ec57807fa 361 // check which file descriptor had an event
ashleymills 1:391ec57807fa 362 if(FD_ISSET(sockfd, &wfds)) {
ashleymills 1:391ec57807fa 363 // FIXME (from tinydtls)
ashleymills 1:391ec57807fa 364 } else if (FD_ISSET(sockfd, &rfds))
ashleymills 1:391ec57807fa 365 if(dtls_handle_read(dtls_context)<0) {
ashleymills 1:391ec57807fa 366 modem.disconnect();
ashleymills 1:391ec57807fa 367 fail(6);
ashleymills 1:391ec57807fa 368 }
ashleymills 1:391ec57807fa 369 }
ashleymills 1:391ec57807fa 370 //else if (FD_ISSET(fileno(stdin), &rfds))
ashleymills 1:391ec57807fa 371 //handle_stdin();
ashleymills 1:391ec57807fa 372 //}
ashleymills 1:391ec57807fa 373
ashleymills 1:391ec57807fa 374 //if(len) {
ashleymills 1:391ec57807fa 375 // try_send(dtls_context, &dst);
ashleymills 1:391ec57807fa 376 //}
ashleymills 1:391ec57807fa 377 }
ashleymills 1:391ec57807fa 378
ashleymills 0:6ae42a2aff75 379 }