resource/csdk/connectivity/src/camessagehandler.c

   1 /* *****************************************************************
   2  *
   3  * Copyright 2014 Samsung Electronics All Rights Reserved.
   4  *
   5  *
   6  *
   7  * Licensed under the Apache License, Version 2.0 (the "License");
   8  * you may not use this file except in compliance with the License.
   9  * You may obtain a copy of the License at
  10  *
  11  *      http://www.apache.org/licenses/LICENSE-2.0
  12  *
  13  * Unless required by applicable law or agreed to in writing, software
  14  * distributed under the License is distributed on an "AS IS" BASIS,
  15  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  16  * See the License for the specific language governing permissions and
  17  * limitations under the License.
  18  *
  19  ******************************************************************/
  20
  21 #include <stdio.h>
  22 #include <stdlib.h>
  23 #include <string.h>
  24 #include <stdint.h>
  25
  26 #include "cainterface.h"
  27 #include "camessagehandler.h"
  28 #include "caremotehandler.h"
  29 #include "caprotocolmessage.h"
  30 #include "logger.h"
  31 #include "config.h" /* for coap protocol */
  32 #include "oic_malloc.h"
  33 #include "canetworkconfigurator.h"
  34 #include "caadapterutils.h"
  35 #include "cainterfacecontroller.h"
  36 #include "caretransmission.h"
  37
  38 #ifdef WITH_BWT
  39 #include "cablockwisetransfer.h"
  40 #endif
  41
  42 #ifndef  SINGLE_THREAD
  43 #include "uqueue.h"
  44 #include "cathreadpool.h" /* for thread pool */
  45 #include "caqueueingthread.h"
  46
  47 #define SINGLE_HANDLE
  48 #define MAX_THREAD_POOL_SIZE    20
  49
  50 // thread pool handle
  51 static ca_thread_pool_t g_threadPoolHandle = NULL;
  52
  53 // message handler main thread
  54 static CAQueueingThread_t g_sendThread;
  55 static CAQueueingThread_t g_receiveThread;
  56
  57 #else
  58 #define CA_MAX_RT_ARRAY_SIZE    3
  59 #endif  // SINGLE_THREAD
  60
  61 #define TAG "OIC_CA_MSG_HANDLE"
  62
  63 static CARetransmission_t g_retransmissionContext;
  64
  65 // handler field
  66 static CARequestCallback g_requestHandler = NULL;
  67 static CAResponseCallback g_responseHandler = NULL;
  68 static CAErrorCallback g_errorHandler = NULL;
  69 static CANetworkMonitorCallback g_nwMonitorHandler = NULL;
  70
  71 static void CAErrorHandler(const CAEndpoint_t *endpoint,
  72                            const void *data, uint32_t dataLen,
  73                            CAResult_t result);
  74
  75 static CAData_t* CAGenerateHandlerData(const CAEndpoint_t *endpoint,
  76                                        const CARemoteId_t *identity,
  77                                        const void *data, CADataType_t dataType);
  78
  79 static void CASendErrorInfo(const CAEndpoint_t *endpoint, const CAInfo_t *info,
  80                             CAResult_t result);
  81
  82 #ifdef SINGLE_THREAD
  83 static void CAProcessReceivedData(CAData_t *data);
  84 #endif
  85 static void CADestroyData(void *data, uint32_t size);
  86 static void CALogPayloadInfo(CAInfo_t *info);
  87 static bool CADropSecondMessage(CAHistory_t *history, const CAEndpoint_t *endpoint, uint16_t id,
  88                                 CAToken_t token, uint8_t tokenLength);
  89
  90 #ifdef WITH_BWT
  91 void CAAddDataToSendThread(CAData_t *data)
  92 {
  93     VERIFY_NON_NULL_VOID(data, TAG, "data");
  94
  95     // add thread
  96     CAQueueingThreadAddData(&g_sendThread, data, sizeof(CAData_t));
  97 }
  98
  99 void CAAddDataToReceiveThread(CAData_t *data)
 100 {
 101     VERIFY_NON_NULL_VOID(data, TAG, "data");
 102
 103     // add thread
 104     CAQueueingThreadAddData(&g_receiveThread, data, sizeof(CAData_t));
 105 }
 106 #endif
 107
 108 static bool CAIsSelectedNetworkAvailable()
 109 {
 110     u_arraylist_t *list = CAGetSelectedNetworkList();
 111     if (!list || u_arraylist_length(list) == 0)
 112     {
 113         OIC_LOG(ERROR, TAG, "No selected network");
 114         return false;
 115     }
 116
 117     return true;
 118 }
 119
 120 static CAData_t* CAGenerateHandlerData(const CAEndpoint_t *endpoint,
 121                                        const CARemoteId_t *identity,
 122                                        const void *data, CADataType_t dataType)
 123 {
 124     OIC_LOG(DEBUG, TAG, "CAGenerateHandlerData IN");
 125     CAInfo_t *info = NULL;
 126     CAData_t *cadata = (CAData_t *) OICCalloc(1, sizeof(CAData_t));
 127     if (!cadata)
 128     {
 129         OIC_LOG(ERROR, TAG, "memory allocation failed");
 130         return NULL;
 131     }
 132
 133     CAEndpoint_t* ep = CACloneEndpoint(endpoint);
 134     if (!ep)
 135     {
 136         OIC_LOG(ERROR, TAG, "endpoint clone failed");
 137         OICFree(cadata);
 138         return NULL;
 139     }
 140
 141     OIC_LOG_V(DEBUG, TAG, "address : %s", ep->addr);
 142     CAResult_t result;
 143
 144     if(CA_RESPONSE_DATA == dataType)
 145     {
 146         CAResponseInfo_t* resInfo = (CAResponseInfo_t*)OICCalloc(1, sizeof(CAResponseInfo_t));
 147         if (!resInfo)
 148         {
 149             OIC_LOG(ERROR, TAG, "memory allocation failed");
 150             OICFree(cadata);
 151             CAFreeEndpoint(ep);
 152             return NULL;
 153         }
 154
 155         result = CAGetResponseInfoFromPDU(data, resInfo, endpoint);
 156         if (CA_STATUS_OK != result)
 157         {
 158             OIC_LOG(ERROR, TAG, "CAGetResponseInfoFromPDU Failed");
 159             CAFreeEndpoint(ep);
 160             CADestroyResponseInfoInternal(resInfo);
 161             OICFree(cadata);
 162             return NULL;
 163         }
 164         cadata->responseInfo = resInfo;
 165         info = &resInfo->info;
 166         if (identity)
 167         {
 168             info->identity = *identity;
 169         }
 170         OIC_LOG(DEBUG, TAG, "Response Info :");
 171         CALogPayloadInfo(info);
 172     }
 173     else if (CA_REQUEST_DATA == dataType)
 174     {
 175         CARequestInfo_t* reqInfo = (CARequestInfo_t*)OICCalloc(1, sizeof(CARequestInfo_t));
 176         if (!reqInfo)
 177         {
 178             OIC_LOG(ERROR, TAG, "memory allocation failed");
 179             OICFree(cadata);
 180             CAFreeEndpoint(ep);
 181             return NULL;
 182         }
 183
 184         result = CAGetRequestInfoFromPDU(data, endpoint, reqInfo);
 185         if (CA_STATUS_OK != result)
 186         {
 187             OIC_LOG(ERROR, TAG, "CAGetRequestInfoFromPDU failed");
 188             CAFreeEndpoint(ep);
 189             CADestroyRequestInfoInternal(reqInfo);
 190             OICFree(cadata);
 191             return NULL;
 192         }
 193
 194         if (CADropSecondMessage(&caglobals.ca.requestHistory, endpoint, reqInfo->info.messageId,
 195                                 reqInfo->info.token, reqInfo->info.tokenLength))
 196         {
 197             OIC_LOG(ERROR, TAG, "Second Request with same Token, Drop it");
 198             CAFreeEndpoint(ep);
 199             CADestroyRequestInfoInternal(reqInfo);
 200             OICFree(cadata);
 201             return NULL;
 202         }
 203
 204         cadata->requestInfo = reqInfo;
 205         info = &reqInfo->info;
 206         if (identity)
 207         {
 208             info->identity = *identity;
 209         }
 210         OIC_LOG(DEBUG, TAG, "Request Info :");
 211         CALogPayloadInfo(info);
 212    }
 213     else if (CA_ERROR_DATA == dataType)
 214     {
 215         CAErrorInfo_t *errorInfo = (CAErrorInfo_t *)OICCalloc(1, sizeof (CAErrorInfo_t));
 216         if (!errorInfo)
 217         {
 218             OIC_LOG(ERROR, TAG, "Memory allocation failed!");
 219             OICFree(cadata);
 220             CAFreeEndpoint(ep);
 221             return NULL;
 222         }
 223
 224         CAResult_t result = CAGetErrorInfoFromPDU(data, endpoint, errorInfo);
 225         if (CA_STATUS_OK != result)
 226         {
 227             OIC_LOG(ERROR, TAG, "CAGetErrorInfoFromPDU failed");
 228             CAFreeEndpoint(ep);
 229             OICFree(errorInfo);
 230             OICFree(cadata);
 231             return NULL;
 232         }
 233
 234         cadata->errorInfo = errorInfo;
 235         info = &errorInfo->info;
 236         if (identity)
 237         {
 238             info->identity = *identity;
 239         }
 240         OIC_LOG(DEBUG, TAG, "error Info :");
 241         CALogPayloadInfo(info);
 242     }
 243
 244     cadata->remoteEndpoint = ep;
 245     cadata->dataType = dataType;
 246
 247     OIC_LOG(DEBUG, TAG, "CAGenerateHandlerData OUT");
 248     return cadata;
 249 }
 250
 251 static void CATimeoutCallback(const CAEndpoint_t *endpoint, const void *pdu, uint32_t size)
 252 {
 253     VERIFY_NON_NULL_VOID(endpoint, TAG, "endpoint");
 254     VERIFY_NON_NULL_VOID(pdu, TAG, "pdu");
 255
 256     CAEndpoint_t* ep = CACloneEndpoint(endpoint);
 257     if (!ep)
 258     {
 259         OIC_LOG(ERROR, TAG, "clone failed");
 260         return;
 261     }
 262
 263     CAResponseInfo_t* resInfo = (CAResponseInfo_t*)OICCalloc(1, sizeof(CAResponseInfo_t));
 264
 265     if (!resInfo)
 266     {
 267         OIC_LOG(ERROR, TAG, "calloc failed");
 268         CAFreeEndpoint(ep);
 269         return;
 270     }
 271
 272     resInfo->result = CA_RETRANSMIT_TIMEOUT;
 273     resInfo->info.type = CAGetMessageTypeFromPduBinaryData(pdu, size);
 274     resInfo->info.messageId = CAGetMessageIdFromPduBinaryData(pdu, size);
 275
 276     CAResult_t res = CAGetTokenFromPDU((const coap_hdr_t *) pdu, &(resInfo->info),
 277                                        endpoint);
 278     if (CA_STATUS_OK != res)
 279     {
 280         OIC_LOG(ERROR, TAG, "fail to get Token from retransmission list");
 281         CADestroyResponseInfoInternal(resInfo);
 282         CAFreeEndpoint(ep);
 283         return;
 284     }
 285
 286     CAData_t *cadata = (CAData_t *) OICCalloc(1, sizeof(CAData_t));
 287     if (NULL == cadata)
 288     {
 289         OIC_LOG(ERROR, TAG, "memory allocation failed !");
 290         CAFreeEndpoint(ep);
 291         CADestroyResponseInfoInternal(resInfo);
 292         return;
 293     }
 294
 295     cadata->type = SEND_TYPE_UNICAST;
 296     cadata->remoteEndpoint = ep;
 297     cadata->requestInfo = NULL;
 298     cadata->responseInfo = resInfo;
 299
 300 #ifdef SINGLE_THREAD
 301     CAProcessReceivedData(cadata);
 302 #else
 303     CAQueueingThreadAddData(&g_receiveThread, cadata, sizeof(CAData_t));
 304 #endif
 305 }
 306
 307 static void CADestroyData(void *data, uint32_t size)
 308 {
 309     OIC_LOG(DEBUG, TAG, "CADestroyData IN");
 310     if ((size_t)size < sizeof(CAData_t))
 311     {
 312         OIC_LOG_V(ERROR, TAG, "Destroy data too small %p %d", data, size);
 313     }
 314     CAData_t *cadata = (CAData_t *) data;
 315
 316     if (NULL == cadata)
 317     {
 318         OIC_LOG(ERROR, TAG, "cadata is NULL");
 319         return;
 320     }
 321
 322     if (NULL != cadata->remoteEndpoint)
 323     {
 324         CAFreeEndpoint(cadata->remoteEndpoint);
 325     }
 326
 327     if (NULL != cadata->requestInfo)
 328     {
 329         CADestroyRequestInfoInternal((CARequestInfo_t *) cadata->requestInfo);
 330     }
 331
 332     if (NULL != cadata->responseInfo)
 333     {
 334         CADestroyResponseInfoInternal((CAResponseInfo_t *) cadata->responseInfo);
 335     }
 336
 337     if (NULL != cadata->errorInfo)
 338     {
 339         CADestroyErrorInfoInternal(cadata->errorInfo);
 340     }
 341
 342     OICFree(cadata);
 343     OIC_LOG(DEBUG, TAG, "CADestroyData OUT");
 344 }
 345
 346 #ifdef SINGLE_THREAD
 347 static void CAProcessReceivedData(CAData_t *data)
 348 {
 349     OIC_LOG(DEBUG, TAG, "CAProcessReceivedData IN");
 350     if (!data)
 351     {
 352         OIC_LOG(ERROR, TAG, "thread data error!!");
 353         return;
 354     }
 355
 356     // parse the data and call the callbacks.
 357     // #1 parse the data
 358     // #2 get endpoint
 359     CAEndpoint_t *rep = (CAEndpoint_t *)(data->remoteEndpoint);
 360     if (!rep)
 361     {
 362         OIC_LOG(ERROR, TAG, "remoteEndpoint error!!");
 363         return;
 364     }
 365
 366     if (data->requestInfo && g_requestHandler)
 367     {
 368         g_requestHandler(rep, data->requestInfo);
 369     }
 370     else if (data->responseInfo && g_responseHandler)
 371     {
 372         g_responseHandler(rep, data->responseInfo);
 373     }
 374     else if (data->errorInfo && g_errorHandler)
 375     {
 376         g_errorHandler(rep, data->errorInfo);
 377     }
 378
 379     CADestroyData(data, sizeof(CAData_t));
 380
 381     OIC_LOG(DEBUG, TAG, "CAProcessReceivedData OUT");
 382 }
 383 #endif
 384
 385 #ifndef SINGLE_THREAD
 386 static void CAReceiveThreadProcess(void *threadData)
 387 {
 388 #ifndef SINGLE_HANDLE
 389     CAData_t *data = (CAData_t *) threadData;
 390     CAProcessReceivedData(data);
 391 #else
 392     (void)threadData;
 393 #endif
 394 }
 395 #endif // SINGLE_THREAD
 396
 397 static CAResult_t CAProcessSendData(const CAData_t *data)
 398 {
 399     VERIFY_NON_NULL(data, TAG, "data");
 400     VERIFY_NON_NULL(data->remoteEndpoint, TAG, "remoteEndpoint");
 401
 402     CAResult_t res = CA_STATUS_FAILED;
 403
 404     CASendDataType_t type = data->type;
 405
 406     coap_pdu_t *pdu = NULL;
 407     CAInfo_t *info = NULL;
 408     coap_list_t *options = NULL;
 409     coap_transport_type transport;
 410
 411     if (SEND_TYPE_UNICAST == type)
 412     {
 413         OIC_LOG(DEBUG,TAG,"Unicast message");
 414 #ifdef ROUTING_GATEWAY
 415         /*
 416          * When forwarding a packet, do not attempt retransmission as its the responsibility of
 417          * packet originator node
 418          */
 419         bool skipRetransmission = false;
 420 #endif
 421
 422         if (NULL != data->requestInfo)
 423         {
 424             OIC_LOG(DEBUG, TAG, "requestInfo is available..");
 425
 426             info = &data->requestInfo->info;
 427 #ifdef ROUTING_GATEWAY
 428             skipRetransmission = data->requestInfo->info.skipRetransmission;
 429 #endif
 430             pdu = CAGeneratePDU(data->requestInfo->method, info, data->remoteEndpoint,
 431                                 &options, &transport);
 432         }
 433         else if (NULL != data->responseInfo)
 434         {
 435             OIC_LOG(DEBUG, TAG, "responseInfo is available..");
 436
 437             info = &data->responseInfo->info;
 438 #ifdef ROUTING_GATEWAY
 439             skipRetransmission = data->responseInfo->info.skipRetransmission;
 440 #endif
 441             pdu = CAGeneratePDU(data->responseInfo->result, info, data->remoteEndpoint,
 442                                 &options, &transport);
 443         }
 444         else
 445         {
 446             OIC_LOG(DEBUG, TAG, "request info, response info is empty");
 447             return CA_STATUS_INVALID_PARAM;
 448         }
 449
 450         // interface controller function call.
 451         if (NULL != pdu)
 452         {
 453 #ifdef WITH_BWT
 454             if (CA_ADAPTER_GATT_BTLE != data->remoteEndpoint->adapter
 455 #ifdef WITH_TCP
 456                     && !CAIsSupportedCoAPOverTCP(data->remoteEndpoint->adapter)
 457 #endif
 458                     )
 459             {
 460                 // Blockwise transfer
 461                 if (NULL != info)
 462                 {
 463                     CAResult_t res = CAAddBlockOption(&pdu, info,
 464                                                       data->remoteEndpoint,
 465                                                       &options);
 466                     if (CA_STATUS_OK != res)
 467                     {
 468                         OIC_LOG(INFO, TAG, "to write block option has failed");
 469                         CAErrorHandler(data->remoteEndpoint, pdu->hdr, pdu->length, res);
 470                         coap_delete_list(options);
 471                         coap_delete_pdu(pdu);
 472                         return res;
 473                     }
 474                 }
 475             }
 476 #endif // WITH_BWT
 477             CALogPDUInfo(pdu, data->remoteEndpoint);
 478
 479             res = CASendUnicastData(data->remoteEndpoint, pdu->hdr, pdu->length);
 480             if (CA_STATUS_OK != res)
 481             {
 482                 OIC_LOG_V(ERROR, TAG, "send failed:%d", res);
 483                 CAErrorHandler(data->remoteEndpoint, pdu->hdr, pdu->length, res);
 484                 coap_delete_list(options);
 485                 coap_delete_pdu(pdu);
 486                 return res;
 487             }
 488
 489 #ifdef WITH_TCP
 490             if (CAIsSupportedCoAPOverTCP(data->remoteEndpoint->adapter))
 491             {
 492                 OIC_LOG(INFO, TAG, "retransmission will be not worked");
 493             }
 494             else
 495 #endif
 496 #ifdef ROUTING_GATEWAY
 497             if(!skipRetransmission)
 498 #endif
 499             {
 500                 // for retransmission
 501                 res = CARetransmissionSentData(&g_retransmissionContext, data->remoteEndpoint,
 502                                                pdu->hdr, pdu->length);
 503                 if ((CA_STATUS_OK != res) && (CA_NOT_SUPPORTED != res))
 504                 {
 505                     //when retransmission not supported this will return CA_NOT_SUPPORTED, ignore
 506                     OIC_LOG_V(INFO, TAG, "retransmission is not enabled due to error, res : %d", res);
 507                     coap_delete_list(options);
 508                     coap_delete_pdu(pdu);
 509                     return res;
 510                 }
 511             }
 512
 513             coap_delete_list(options);
 514             coap_delete_pdu(pdu);
 515         }
 516         else
 517         {
 518             OIC_LOG(ERROR,TAG,"Failed to generate unicast PDU");
 519             CASendErrorInfo(data->remoteEndpoint, info, CA_SEND_FAILED);
 520             return CA_SEND_FAILED;
 521         }
 522     }
 523     else if (SEND_TYPE_MULTICAST == type)
 524     {
 525         OIC_LOG(DEBUG,TAG,"Multicast message");
 526         if (NULL != data->requestInfo)
 527         {
 528             OIC_LOG(DEBUG, TAG, "requestInfo is available..");
 529
 530             info = &data->requestInfo->info;
 531             pdu = CAGeneratePDU(CA_GET, info, data->remoteEndpoint, &options, &transport);
 532
 533             if (NULL != pdu)
 534             {
 535 #ifdef WITH_BWT
 536                 if (CA_ADAPTER_GATT_BTLE != data->remoteEndpoint->adapter
 537 #ifdef WITH_TCP
 538                         && !CAIsSupportedCoAPOverTCP(data->remoteEndpoint->adapter)
 539 #endif
 540                         )
 541                 {
 542                     // Blockwise transfer
 543                     CAResult_t res = CAAddBlockOption(&pdu, info,
 544                                                       data->remoteEndpoint,
 545                                                       &options);
 546                     if (CA_STATUS_OK != res)
 547                     {
 548                         OIC_LOG(DEBUG, TAG, "CAAddBlockOption has failed");
 549                         CAErrorHandler(data->remoteEndpoint, pdu->hdr, pdu->length, res);
 550                         coap_delete_list(options);
 551                         coap_delete_pdu(pdu);
 552                         return res;
 553                     }
 554                 }
 555 #endif // WITH_BWT
 556             }
 557             else
 558             {
 559                 OIC_LOG(ERROR,TAG,"Failed to generate multicast PDU");
 560                 CASendErrorInfo(data->remoteEndpoint, info, CA_SEND_FAILED);
 561                 return CA_SEND_FAILED;
 562             }
 563         }
 564         else if (NULL != data->responseInfo)
 565         {
 566             OIC_LOG(DEBUG, TAG, "responseInfo is available..");
 567
 568             info = &data->responseInfo->info;
 569             pdu = CAGeneratePDU(data->responseInfo->result, info, data->remoteEndpoint,
 570                                 &options, &transport);
 571
 572             if (NULL != pdu)
 573             {
 574 #ifdef WITH_BWT
 575                 if (CA_ADAPTER_GATT_BTLE != data->remoteEndpoint->adapter
 576 #ifdef WITH_TCP
 577                         && !CAIsSupportedCoAPOverTCP(data->remoteEndpoint->adapter)
 578 #endif
 579                         )
 580                 {
 581                     // Blockwise transfer
 582                     if (NULL != info)
 583                     {
 584                         CAResult_t res = CAAddBlockOption(&pdu, info,
 585                                                           data->remoteEndpoint,
 586                                                           &options);
 587                         if (CA_STATUS_OK != res)
 588                         {
 589                             OIC_LOG(INFO, TAG, "to write block option has failed");
 590                             CAErrorHandler(data->remoteEndpoint, pdu->hdr, pdu->length, res);
 591                             coap_delete_list(options);
 592                             coap_delete_pdu(pdu);
 593                             return res;
 594                         }
 595                     }
 596                 }
 597 #endif // WITH_BWT
 598             }
 599             else
 600             {
 601                 OIC_LOG(ERROR,TAG,"Failed to generate multicast PDU");
 602                 CASendErrorInfo(data->remoteEndpoint, info, CA_SEND_FAILED);
 603                 return CA_SEND_FAILED;
 604             }
 605         }
 606         else
 607         {
 608             OIC_LOG(ERROR, TAG, "request or response info is empty");
 609             return CA_SEND_FAILED;
 610         }
 611
 612         CALogPDUInfo(pdu, data->remoteEndpoint);
 613
 614         OIC_LOG(DEBUG, TAG, "pdu to send :");
 615         OIC_LOG_BUFFER(DEBUG, TAG,  (uint8_t*)pdu->hdr, pdu->length);
 616
 617         res = CASendMulticastData(data->remoteEndpoint, pdu->hdr, pdu->length);
 618         if (CA_STATUS_OK != res)
 619         {
 620             OIC_LOG_V(ERROR, TAG, "send failed:%d", res);
 621             CAErrorHandler(data->remoteEndpoint, pdu->hdr, pdu->length, res);
 622             coap_delete_list(options);
 623             coap_delete_pdu(pdu);
 624             return res;
 625         }
 626
 627         coap_delete_list(options);
 628         coap_delete_pdu(pdu);
 629     }
 630
 631     return CA_STATUS_OK;
 632 }
 633
 634 #ifndef SINGLE_THREAD
 635 static void CASendThreadProcess(void *threadData)
 636 {
 637     CAData_t *data = (CAData_t *) threadData;
 638     CAProcessSendData(data);
 639 }
 640 #endif
 641
 642 /*
 643  * If a second message arrives with the same message ID, token and the other address
 644  * family, drop it.  Typically, IPv6 beats IPv4, so the IPv4 message is dropped.
 645  */
 646 static bool CADropSecondMessage(CAHistory_t *history, const CAEndpoint_t *ep, uint16_t id,
 647                                 CAToken_t token, uint8_t tokenLength)
 648 {
 649     if (!ep)
 650     {
 651         return true;
 652     }
 653     if (ep->adapter != CA_ADAPTER_IP)
 654     {
 655         return false;
 656     }
 657     if (!caglobals.ip.dualstack)
 658     {
 659         return false;
 660     }
 661
 662     if (tokenLength > CA_MAX_TOKEN_LEN)
 663     {
 664         /*
 665          * If token length is more than CA_MAX_TOKEN_LEN,
 666          * we compare the first CA_MAX_TOKEN_LEN bytes only.
 667          */
 668         tokenLength = CA_MAX_TOKEN_LEN;
 669     }
 670
 671     bool ret = false;
 672     CATransportFlags_t familyFlags = ep->flags & CA_IPFAMILY_MASK;
 673
 674     for (size_t i = 0; i < sizeof(history->items) / sizeof(history->items[0]); i++)
 675     {
 676         CAHistoryItem_t *item = &(history->items[i]);
 677         if (id == item->messageId && tokenLength == item->tokenLength
 678             && memcmp(item->token, token, tokenLength) == 0)
 679         {
 680             if ((familyFlags ^ item->flags) == CA_IPFAMILY_MASK)
 681             {
 682                 OIC_LOG_V(INFO, TAG, "IPv%c duplicate message ignored",
 683                           familyFlags & CA_IPV6 ? '6' : '4');
 684                 ret = true;
 685                 break;
 686             }
 687         }
 688     }
 689
 690     history->items[history->nextIndex].flags = familyFlags;
 691     history->items[history->nextIndex].messageId = id;
 692     if (token && tokenLength)
 693     {
 694         memcpy(history->items[history->nextIndex].token, token, tokenLength);
 695         history->items[history->nextIndex].tokenLength = tokenLength;
 696     }
 697
 698     if (++history->nextIndex >= HISTORYSIZE)
 699     {
 700         history->nextIndex = 0;
 701     }
 702
 703     return ret;
 704 }
 705
 706 static void CAReceivedPacketCallback(const CASecureEndpoint_t *sep,
 707                                      const void *data, uint32_t dataLen)
 708 {
 709     VERIFY_NON_NULL_VOID(sep, TAG, "remoteEndpoint");
 710     VERIFY_NON_NULL_VOID(data, TAG, "data");
 711
 712     OIC_LOG(DEBUG, TAG, "received pdu data :");
 713     OIC_LOG_BUFFER(DEBUG, TAG,  data, dataLen);
 714
 715     uint32_t code = CA_NOT_FOUND;
 716     CAData_t *cadata = NULL;
 717
 718     coap_pdu_t *pdu = (coap_pdu_t *) CAParsePDU((const char *) data, dataLen, &code,
 719                                                 &(sep->endpoint));
 720     if (NULL == pdu)
 721     {
 722         OIC_LOG(ERROR, TAG, "Parse PDU failed");
 723         return;
 724     }
 725
 726     OIC_LOG_V(DEBUG, TAG, "code = %d", code);
 727     if (CA_GET == code || CA_POST == code || CA_PUT == code || CA_DELETE == code)
 728     {
 729         cadata = CAGenerateHandlerData(&(sep->endpoint), &(sep->identity), pdu, CA_REQUEST_DATA);
 730         if (!cadata)
 731         {
 732             OIC_LOG(ERROR, TAG, "CAReceivedPacketCallback, CAGenerateHandlerData failed!");
 733             coap_delete_pdu(pdu);
 734             return;
 735         }
 736     }
 737     else
 738     {
 739         cadata = CAGenerateHandlerData(&(sep->endpoint), &(sep->identity), pdu, CA_RESPONSE_DATA);
 740         if (!cadata)
 741         {
 742             OIC_LOG(ERROR, TAG, "CAReceivedPacketCallback, CAGenerateHandlerData failed!");
 743             coap_delete_pdu(pdu);
 744             return;
 745         }
 746
 747 #ifdef WITH_TCP
 748         if (CAIsSupportedCoAPOverTCP(sep->endpoint.adapter))
 749         {
 750             OIC_LOG(INFO, TAG, "retransmission is not supported");
 751         }
 752         else
 753 #endif
 754         {
 755             // for retransmission
 756             void *retransmissionPdu = NULL;
 757             CARetransmissionReceivedData(&g_retransmissionContext, cadata->remoteEndpoint, pdu->hdr,
 758                                          pdu->length, &retransmissionPdu);
 759
 760             // get token from saved data in retransmission list
 761             if (retransmissionPdu && CA_EMPTY == code)
 762             {
 763                 if (cadata->responseInfo)
 764                 {
 765                     CAInfo_t *info = &cadata->responseInfo->info;
 766                     CAResult_t res = CAGetTokenFromPDU((const coap_hdr_t *)retransmissionPdu,
 767                                                        info, &(sep->endpoint));
 768                     if (CA_STATUS_OK != res)
 769                     {
 770                         OIC_LOG(ERROR, TAG, "fail to get Token from retransmission list");
 771                         OICFree(info->token);
 772                         info->tokenLength = 0;
 773                     }
 774                 }
 775             }
 776             OICFree(retransmissionPdu);
 777         }
 778     }
 779
 780     cadata->type = SEND_TYPE_UNICAST;
 781
 782 #ifdef SINGLE_THREAD
 783     CAProcessReceivedData(cadata);
 784 #else
 785 #ifdef WITH_BWT
 786     if (CA_ADAPTER_GATT_BTLE != sep->endpoint.adapter
 787 #ifdef WITH_TCP
 788             && !CAIsSupportedCoAPOverTCP(sep->endpoint.adapter)
 789 #endif
 790             )
 791     {
 792         CAResult_t res = CAReceiveBlockWiseData(pdu, &(sep->endpoint), cadata, dataLen);
 793         if (CA_NOT_SUPPORTED == res || CA_REQUEST_TIMEOUT == res)
 794         {
 795             OIC_LOG(ERROR, TAG, "this message does not have block option");
 796             CAQueueingThreadAddData(&g_receiveThread, cadata, sizeof(CAData_t));
 797         }
 798         else
 799         {
 800             CADestroyData(cadata, sizeof(CAData_t));
 801         }
 802     }
 803     else
 804 #endif
 805     {
 806         CAQueueingThreadAddData(&g_receiveThread, cadata, sizeof(CAData_t));
 807     }
 808 #endif // SINGLE_THREAD
 809
 810     coap_delete_pdu(pdu);
 811 }
 812
 813 static void CANetworkChangedCallback(const CAEndpoint_t *info, CANetworkStatus_t status)
 814 {
 815     (void)info;
 816     (void)status;
 817
 818     if (g_nwMonitorHandler)
 819     {
 820         g_nwMonitorHandler(info, status);
 821     }
 822 }
 823
 824 void CAHandleRequestResponseCallbacks()
 825 {
 826 #ifdef SINGLE_THREAD
 827     CAReadData();
 828     CARetransmissionBaseRoutine((void *)&g_retransmissionContext);
 829 #else
 830 #ifdef SINGLE_HANDLE
 831     // parse the data and call the callbacks.
 832     // #1 parse the data
 833     // #2 get endpoint
 834
 835     ca_mutex_lock(g_receiveThread.threadMutex);
 836
 837     u_queue_message_t *item = u_queue_get_element(g_receiveThread.dataQueue);
 838
 839     ca_mutex_unlock(g_receiveThread.threadMutex);
 840
 841     if (NULL == item || NULL == item->msg)
 842     {
 843         return;
 844     }
 845
 846     // get endpoint
 847     CAData_t *td = (CAData_t *) item->msg;
 848
 849     if (td->requestInfo && g_requestHandler)
 850     {
 851         OIC_LOG_V(DEBUG, TAG, "request callback : %d", td->requestInfo->info.numOptions);
 852         g_requestHandler(td->remoteEndpoint, td->requestInfo);
 853     }
 854     else if (td->responseInfo && g_responseHandler)
 855     {
 856         OIC_LOG_V(DEBUG, TAG, "response callback : %d", td->responseInfo->info.numOptions);
 857         g_responseHandler(td->remoteEndpoint, td->responseInfo);
 858     }
 859     else if (td->errorInfo && g_errorHandler)
 860     {
 861         OIC_LOG_V(DEBUG, TAG, "error callback error: %d", td->errorInfo->result);
 862         g_errorHandler(td->remoteEndpoint, td->errorInfo);
 863     }
 864
 865     CADestroyData(item->msg, sizeof(CAData_t));
 866     OICFree(item);
 867
 868 #endif // SINGLE_HANDLE
 869 #endif // SINGLE_THREAD
 870 }
 871
 872 static CAData_t* CAPrepareSendData(const CAEndpoint_t *endpoint, const void *sendData,
 873                                    CADataType_t dataType)
 874 {
 875     OIC_LOG(DEBUG, TAG, "CAPrepareSendData IN");
 876
 877     CAData_t *cadata = (CAData_t *) OICCalloc(1, sizeof(CAData_t));
 878     if (!cadata)
 879     {
 880         OIC_LOG(ERROR, TAG, "memory allocation failed");
 881         return NULL;
 882     }
 883
 884     if(CA_REQUEST_DATA == dataType)
 885     {
 886         // clone request info
 887         CARequestInfo_t *request = CACloneRequestInfo((CARequestInfo_t *)sendData);
 888
 889         if(!request)
 890         {
 891             OIC_LOG(ERROR, TAG, "CACloneRequestInfo failed");
 892             OICFree(cadata);
 893             return NULL;
 894         }
 895
 896         cadata->type = request->isMulticast ? SEND_TYPE_MULTICAST : SEND_TYPE_UNICAST;
 897         cadata->requestInfo =  request;
 898     }
 899     else if(CA_RESPONSE_DATA == dataType)
 900     {
 901         // clone response info
 902         CAResponseInfo_t *response = CACloneResponseInfo((CAResponseInfo_t *)sendData);
 903
 904         if(!response)
 905         {
 906             OIC_LOG(ERROR, TAG, "CACloneResponseInfo failed");
 907             OICFree(cadata);
 908             return NULL;
 909         }
 910
 911         cadata->type = response->isMulticast ? SEND_TYPE_MULTICAST : SEND_TYPE_UNICAST;
 912         cadata->responseInfo = response;
 913     }
 914     else
 915     {
 916         OIC_LOG(ERROR, TAG, "CAPrepareSendData unknown data type");
 917         OICFree(cadata);
 918         return NULL;
 919     }
 920
 921     CAEndpoint_t* ep = CACloneEndpoint(endpoint);
 922     if (!ep)
 923     {
 924         OIC_LOG(ERROR, TAG, "endpoint clone failed");
 925         CADestroyData(cadata, sizeof(CAData_t));
 926         return NULL;
 927     }
 928
 929     cadata->remoteEndpoint = ep;
 930     cadata->dataType = dataType;
 931     return cadata;
 932 }
 933
 934 CAResult_t CADetachSendMessage(const CAEndpoint_t *endpoint, const void *sendMsg,
 935                                CADataType_t dataType)
 936 {
 937     VERIFY_NON_NULL(endpoint, TAG, "endpoint");
 938     VERIFY_NON_NULL(sendMsg, TAG, "sendMsg");
 939
 940     if (false == CAIsSelectedNetworkAvailable())
 941     {
 942         return CA_STATUS_FAILED;
 943     }
 944
 945 #ifdef ARDUINO
 946     // If max retransmission queue is reached, then don't handle new request
 947     if (CA_MAX_RT_ARRAY_SIZE == u_arraylist_length(g_retransmissionContext.dataList))
 948     {
 949         OIC_LOG(ERROR, TAG, "max RT queue size reached!");
 950         return CA_SEND_FAILED;
 951     }
 952 #endif // ARDUINO
 953
 954     CAData_t *data = CAPrepareSendData(endpoint, sendMsg, dataType);
 955     if(!data)
 956     {
 957         OIC_LOG(ERROR, TAG, "CAPrepareSendData failed");
 958         return CA_MEMORY_ALLOC_FAILED;
 959     }
 960
 961 #ifdef SINGLE_THREAD
 962     CAResult_t result = CAProcessSendData(data);
 963     if(CA_STATUS_OK != result)
 964     {
 965         OIC_LOG(ERROR, TAG, "CAProcessSendData failed");
 966         CADestroyData(data, sizeof(CAData_t));
 967         return result;
 968     }
 969
 970     CADestroyData(data, sizeof(CAData_t));
 971 #else
 972 #ifdef WITH_BWT
 973     if (CA_ADAPTER_GATT_BTLE != endpoint->adapter
 974 #ifdef WITH_TCP
 975             && !CAIsSupportedCoAPOverTCP(data->remoteEndpoint->adapter)
 976 #endif
 977             )
 978     {
 979         // send block data
 980         CAResult_t res = CASendBlockWiseData(data);
 981         if(CA_NOT_SUPPORTED == res)
 982         {
 983             OIC_LOG(DEBUG, TAG, "normal msg will be sent");
 984             CAQueueingThreadAddData(&g_sendThread, data, sizeof(CAData_t));
 985             return CA_STATUS_OK;
 986         }
 987         else
 988         {
 989             CADestroyData(data, sizeof(CAData_t));
 990         }
 991         return res;
 992     }
 993     else
 994 #endif // WITH_BWT
 995     {
 996         CAQueueingThreadAddData(&g_sendThread, data, sizeof(CAData_t));
 997     }
 998 #endif // SINGLE_THREAD
 999
1000     return CA_STATUS_OK;
1001 }
1002
1003 CAResult_t CADetachMessageResourceUri(const CAURI_t resourceUri, const CAToken_t token,
1004                                       uint8_t tokenLength, const CAHeaderOption_t *options,
1005                                       uint8_t numOptions)
1006 {
1007     (void)resourceUri;
1008     (void)token;
1009     (void)tokenLength;
1010     (void)options;
1011     (void)numOptions;
1012     return CA_NOT_SUPPORTED;
1013 }
1014
1015 void CASetInterfaceCallbacks(CARequestCallback ReqHandler, CAResponseCallback RespHandler,
1016                              CAErrorCallback errorHandler)
1017 {
1018     g_requestHandler = ReqHandler;
1019     g_responseHandler = RespHandler;
1020     g_errorHandler = errorHandler;
1021 }
1022
1023 void CASetNetworkMonitorCallback(CANetworkMonitorCallback nwMonitorHandler)
1024 {
1025     g_nwMonitorHandler = nwMonitorHandler;
1026 }
1027
1028 CAResult_t CAInitializeMessageHandler()
1029 {
1030     CASetPacketReceivedCallback(CAReceivedPacketCallback);
1031
1032     CASetNetworkChangeCallback(CANetworkChangedCallback);
1033     CASetErrorHandleCallback(CAErrorHandler);
1034
1035 #ifndef SINGLE_THREAD
1036     // create thread pool
1037     CAResult_t res = ca_thread_pool_init(MAX_THREAD_POOL_SIZE, &g_threadPoolHandle);
1038     if (CA_STATUS_OK != res)
1039     {
1040         OIC_LOG(ERROR, TAG, "thread pool initialize error.");
1041         return res;
1042     }
1043
1044     // send thread initialize
1045     res = CAQueueingThreadInitialize(&g_sendThread, g_threadPoolHandle,
1046                                      CASendThreadProcess, CADestroyData);
1047     if (CA_STATUS_OK != res)
1048     {
1049         OIC_LOG(ERROR, TAG, "Failed to Initialize send queue thread");
1050         ca_thread_pool_free(g_threadPoolHandle);
1051         g_threadPoolHandle = NULL;
1052         return res;
1053     }
1054
1055     // start send thread
1056     res = CAQueueingThreadStart(&g_sendThread);
1057     if (CA_STATUS_OK != res)
1058     {
1059         OIC_LOG(ERROR, TAG, "thread start error(send thread).");
1060         ca_thread_pool_free(g_threadPoolHandle);
1061         g_threadPoolHandle = NULL;
1062         CAQueueingThreadDestroy(&g_sendThread);
1063         return res;
1064     }
1065
1066     // receive thread initialize
1067     res = CAQueueingThreadInitialize(&g_receiveThread, g_threadPoolHandle,
1068                                      CAReceiveThreadProcess, CADestroyData);
1069     if (CA_STATUS_OK != res)
1070     {
1071         OIC_LOG(ERROR, TAG, "Failed to Initialize receive queue thread");
1072         ca_thread_pool_free(g_threadPoolHandle);
1073         g_threadPoolHandle = NULL;
1074         CAQueueingThreadDestroy(&g_sendThread);
1075         return res;
1076     }
1077
1078 #ifndef SINGLE_HANDLE // This will be enabled when RI supports multi threading
1079     // start receive thread
1080     res = CAQueueingThreadStart(&g_receiveThread);
1081     if (CA_STATUS_OK != res)
1082     {
1083         OIC_LOG(ERROR, TAG, "thread start error(receive thread).");
1084         ca_thread_pool_free(g_threadPoolHandle);
1085         g_threadPoolHandle = NULL;
1086         CAQueueingThreadDestroy(&g_sendThread);
1087         CAQueueingThreadDestroy(&g_receiveThread);
1088         return res;
1089     }
1090 #endif // SINGLE_HANDLE
1091
1092     // retransmission initialize
1093     res = CARetransmissionInitialize(&g_retransmissionContext, g_threadPoolHandle,
1094                                      CASendUnicastData, CATimeoutCallback, NULL);
1095     if (CA_STATUS_OK != res)
1096     {
1097         OIC_LOG(ERROR, TAG, "Failed to Initialize Retransmission.");
1098         ca_thread_pool_free(g_threadPoolHandle);
1099         g_threadPoolHandle = NULL;
1100         CAQueueingThreadDestroy(&g_sendThread);
1101         CAQueueingThreadDestroy(&g_receiveThread);
1102         return res;
1103     }
1104
1105 #ifdef WITH_BWT
1106     // block-wise transfer initialize
1107     res = CAInitializeBlockWiseTransfer(CAAddDataToSendThread, CAAddDataToReceiveThread);
1108     if (CA_STATUS_OK != res)
1109     {
1110         OIC_LOG(ERROR, TAG, "Failed to Initialize BlockWiseTransfer.");
1111         ca_thread_pool_free(g_threadPoolHandle);
1112         g_threadPoolHandle = NULL;
1113         CAQueueingThreadDestroy(&g_sendThread);
1114         CAQueueingThreadDestroy(&g_receiveThread);
1115         CARetransmissionDestroy(&g_retransmissionContext);
1116         return res;
1117     }
1118 #endif
1119
1120     // start retransmission
1121     res = CARetransmissionStart(&g_retransmissionContext);
1122     if (CA_STATUS_OK != res)
1123     {
1124         OIC_LOG(ERROR, TAG, "thread start error(retransmission thread).");
1125         ca_thread_pool_free(g_threadPoolHandle);
1126         g_threadPoolHandle = NULL;
1127         CAQueueingThreadDestroy(&g_sendThread);
1128         CAQueueingThreadDestroy(&g_receiveThread);
1129         CARetransmissionDestroy(&g_retransmissionContext);
1130         return res;
1131     }
1132
1133     // initialize interface adapters by controller
1134     CAInitializeAdapters(g_threadPoolHandle);
1135 #else
1136     // retransmission initialize
1137     CAResult_t res = CARetransmissionInitialize(&g_retransmissionContext, NULL, CASendUnicastData,
1138                                                 CATimeoutCallback, NULL);
1139     if (CA_STATUS_OK != res)
1140     {
1141         OIC_LOG(ERROR, TAG, "Failed to Initialize Retransmission.");
1142         return res;
1143     }
1144
1145     CAInitializeAdapters();
1146 #endif // SINGLE_THREAD
1147
1148     return CA_STATUS_OK;
1149 }
1150
1151 void CATerminateMessageHandler()
1152 {
1153 #ifndef SINGLE_THREAD
1154     CATransportAdapter_t connType;
1155     u_arraylist_t *list = CAGetSelectedNetworkList();
1156     uint32_t length = u_arraylist_length(list);
1157
1158     uint32_t i = 0;
1159     for (i = 0; i < length; i++)
1160     {
1161         void* ptrType = u_arraylist_get(list, i);
1162
1163         if (NULL == ptrType)
1164         {
1165             continue;
1166         }
1167
1168         connType = *(CATransportAdapter_t *)ptrType;
1169         CAStopAdapter(connType);
1170     }
1171
1172     // stop retransmission
1173     if (NULL != g_retransmissionContext.threadMutex)
1174     {
1175         CARetransmissionStop(&g_retransmissionContext);
1176     }
1177
1178     // stop thread
1179     // delete thread data
1180     if (NULL != g_sendThread.threadMutex)
1181     {
1182         CAQueueingThreadStop(&g_sendThread);
1183     }
1184
1185     // stop thread
1186     // delete thread data
1187     if (NULL != g_receiveThread.threadMutex)
1188     {
1189 #ifndef SINGLE_HANDLE // This will be enabled when RI supports multi threading
1190         CAQueueingThreadStop(&g_receiveThread);
1191 #endif
1192     }
1193
1194     // destroy thread pool
1195     if (NULL != g_threadPoolHandle)
1196     {
1197         ca_thread_pool_free(g_threadPoolHandle);
1198         g_threadPoolHandle = NULL;
1199     }
1200
1201 #ifdef WITH_BWT
1202     CATerminateBlockWiseTransfer();
1203 #endif
1204     CARetransmissionDestroy(&g_retransmissionContext);
1205     CAQueueingThreadDestroy(&g_sendThread);
1206     CAQueueingThreadDestroy(&g_receiveThread);
1207
1208     // terminate interface adapters by controller
1209     CATerminateAdapters();
1210 #else
1211     // terminate interface adapters by controller
1212     CATerminateAdapters();
1213
1214     // stop retransmission
1215     CARetransmissionStop(&g_retransmissionContext);
1216     CARetransmissionDestroy(&g_retransmissionContext);
1217 #endif // SINGLE_THREAD
1218 }
1219
1220 void CALogPDUInfo(coap_pdu_t *pdu, const CAEndpoint_t *endpoint)
1221 {
1222     VERIFY_NON_NULL_VOID(pdu, TAG, "pdu");
1223     VERIFY_NON_NULL_VOID(endpoint, TAG, "endpoint");
1224
1225     OIC_LOG_V(DEBUG, TAG, "PDU Maker - payload : %s", pdu->data);
1226
1227 #ifdef WITH_TCP
1228     if (CAIsSupportedCoAPOverTCP(endpoint->adapter))
1229     {
1230         OIC_LOG(DEBUG, TAG, "pdu header data :");
1231         OIC_LOG_BUFFER(DEBUG, TAG,  (const uint8_t *) pdu->hdr, pdu->length);
1232     }
1233     else
1234 #endif
1235     {
1236         OIC_LOG_V(DEBUG, TAG, "PDU Maker - type : %d", pdu->hdr->coap_hdr_udp_t.type);
1237
1238         OIC_LOG_V(DEBUG, TAG, "PDU Maker - code : %d", pdu->hdr->coap_hdr_udp_t.code);
1239
1240         OIC_LOG(DEBUG, TAG, "PDU Maker - token :");
1241
1242         OIC_LOG_BUFFER(DEBUG, TAG, pdu->hdr->coap_hdr_udp_t.token,
1243                        pdu->hdr->coap_hdr_udp_t.token_length);
1244     }
1245 }
1246
1247 static void CALogPayloadInfo(CAInfo_t *info)
1248 {
1249     if(info)
1250     {
1251         if (info->options)
1252         {
1253             for (uint32_t i = 0; i < info->numOptions; i++)
1254             {
1255                 OIC_LOG_V(DEBUG, TAG, "optionID: %u", info->options[i].optionID);
1256
1257                 OIC_LOG_V(DEBUG, TAG, "list: %s", info->options[i].optionData);
1258             }
1259         }
1260
1261         if (info->payload)
1262         {
1263             OIC_LOG_V(DEBUG, TAG, "payload: %p(%zu)", info->payload,
1264                       info->payloadSize);
1265         }
1266
1267         if (info->token)
1268         {
1269             OIC_LOG(DEBUG, TAG, "token:");
1270             OIC_LOG_BUFFER(DEBUG, TAG, (const uint8_t *) info->token,
1271                            info->tokenLength);
1272         }
1273         OIC_LOG_V(DEBUG, TAG, "msgID: %u", info->messageId);
1274     }
1275     else
1276     {
1277         OIC_LOG(DEBUG, TAG, "info is NULL, cannot output log data");
1278     }
1279 }
1280
1281 void CAErrorHandler(const CAEndpoint_t *endpoint,
1282                     const void *data, uint32_t dataLen,
1283                     CAResult_t result)
1284 {
1285     OIC_LOG(DEBUG, TAG, "CAErrorHandler IN");
1286
1287 #ifndef SINGLE_THREAD
1288     VERIFY_NON_NULL_VOID(endpoint, TAG, "remoteEndpoint");
1289     VERIFY_NON_NULL_VOID(data, TAG, "data");
1290
1291     uint32_t code = CA_NOT_FOUND;
1292     //Do not free remoteEndpoint and data. Currently they will be freed in data thread
1293     //Get PDU data
1294     coap_pdu_t *pdu = (coap_pdu_t *)CAParsePDU((const char *)data, dataLen, &code, endpoint);
1295     if (NULL == pdu)
1296     {
1297         OIC_LOG(ERROR, TAG, "Parse PDU failed");
1298         return;
1299     }
1300
1301     CAData_t *cadata = CAGenerateHandlerData(endpoint, NULL, pdu, CA_ERROR_DATA);
1302     if(!cadata)
1303     {
1304         OIC_LOG(ERROR, TAG, "CAErrorHandler, CAGenerateHandlerData failed!");
1305         coap_delete_pdu(pdu);
1306         return;
1307     }
1308
1309     cadata->errorInfo->result = result;
1310
1311     CAQueueingThreadAddData(&g_receiveThread, cadata, sizeof(CAData_t));
1312     coap_delete_pdu(pdu);
1313 #endif
1314
1315     OIC_LOG(DEBUG, TAG, "CAErrorHandler OUT");
1316     return;
1317 }
1318
1319 static void CASendErrorInfo(const CAEndpoint_t *endpoint, const CAInfo_t *info, CAResult_t result)
1320 {
1321     OIC_LOG(DEBUG, TAG, "CASendErrorInfo IN");
1322 #ifndef SINGLE_THREAD
1323     CAData_t *cadata = (CAData_t *) OICCalloc(1, sizeof(CAData_t));
1324     if (!cadata)
1325     {
1326         OIC_LOG(ERROR, TAG, "cadata memory allocation failed");
1327         return;
1328     }
1329
1330     CAEndpoint_t* ep = CACloneEndpoint(endpoint);
1331     if (!ep)
1332     {
1333         OIC_LOG(ERROR, TAG, "endpoint clone failed");
1334         OICFree(cadata);
1335         return;
1336     }
1337
1338     CAErrorInfo_t *errorInfo = (CAErrorInfo_t *)OICCalloc(1, sizeof (CAErrorInfo_t));
1339     if (!errorInfo)
1340     {
1341         OIC_LOG(ERROR, TAG, "errorInfo memory allocation failed");
1342         OICFree(cadata);
1343         CAFreeEndpoint(ep);
1344         return;
1345     }
1346
1347     CAResult_t res = CACloneInfo(info, &errorInfo->info);
1348     if (CA_STATUS_OK != res)
1349     {
1350         OIC_LOG(ERROR, TAG, "info clone failed");
1351         OICFree(cadata);
1352         OICFree(errorInfo);
1353         CAFreeEndpoint(ep);
1354         return;
1355     }
1356
1357     errorInfo->result = result;
1358     cadata->remoteEndpoint = ep;
1359     cadata->errorInfo = errorInfo;
1360     cadata->dataType = CA_ERROR_DATA;
1361
1362     CAQueueingThreadAddData(&g_receiveThread, cadata, sizeof(CAData_t));
1363 #endif
1364     OIC_LOG(DEBUG, TAG, "CASendErrorInfo OUT");
1365 }