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 CAProcessMulticastData(const CAData_t *data)
 398 {
 399     VERIFY_NON_NULL(data, TAG, "data");
 400     VERIFY_NON_NULL(data->remoteEndpoint, TAG, "remoteEndpoint");
 401
 402     coap_pdu_t *pdu = NULL;
 403     CAInfo_t *info = NULL;
 404     coap_list_t *options = NULL;
 405     coap_transport_type transport;
 406     CAResult_t res = CA_SEND_FAILED;
 407     if (NULL != data->requestInfo)
 408     {
 409         OIC_LOG(DEBUG, TAG, "requestInfo is available..");
 410
 411         info = &data->requestInfo->info;
 412         pdu = CAGeneratePDU(CA_GET, info, data->remoteEndpoint, &options, &transport);
 413
 414         if (NULL != pdu)
 415         {
 416 #ifdef WITH_BWT
 417             if (CAIsSupportedBlockwiseTransfer(data->remoteEndpoint->adapter))
 418             {
 419                 // Blockwise transfer
 420                 res = CAAddBlockOption(&pdu, info, data->remoteEndpoint, &options);
 421                 if (CA_STATUS_OK != res)
 422                 {
 423                     OIC_LOG(DEBUG, TAG, "CAAddBlockOption has failed");
 424                     goto exit;
 425                 }
 426             }
 427 #endif // WITH_BWT
 428         }
 429         else
 430         {
 431             OIC_LOG(ERROR,TAG,"Failed to generate multicast PDU");
 432             CASendErrorInfo(data->remoteEndpoint, info, CA_SEND_FAILED);
 433             return res;
 434         }
 435     }
 436     else if (NULL != data->responseInfo)
 437     {
 438         OIC_LOG(DEBUG, TAG, "responseInfo is available..");
 439
 440         info = &data->responseInfo->info;
 441         pdu = CAGeneratePDU(data->responseInfo->result, info, data->remoteEndpoint,
 442                             &options, &transport);
 443
 444         if (NULL != pdu)
 445         {
 446 #ifdef WITH_BWT
 447             if (CAIsSupportedBlockwiseTransfer(data->remoteEndpoint->adapter))
 448             {
 449                 // Blockwise transfer
 450                 if (NULL != info)
 451                 {
 452                     res = CAAddBlockOption(&pdu, info, data->remoteEndpoint, &options);
 453                     if (CA_STATUS_OK != res)
 454                     {
 455                         OIC_LOG(INFO, TAG, "to write block option has failed");
 456                         goto exit;
 457                     }
 458                 }
 459             }
 460 #endif // WITH_BWT
 461         }
 462         else
 463         {
 464             OIC_LOG(ERROR,TAG,"Failed to generate multicast PDU");
 465             CASendErrorInfo(data->remoteEndpoint, info, CA_SEND_FAILED);
 466             return res;
 467         }
 468     }
 469     else
 470     {
 471         OIC_LOG(ERROR, TAG, "request or response info is empty");
 472         return res;
 473     }
 474
 475     CALogPDUInfo(pdu, data->remoteEndpoint);
 476
 477     OIC_LOG(DEBUG, TAG, "pdu to send :");
 478     OIC_LOG_BUFFER(DEBUG, TAG,  (uint8_t*)pdu->hdr, pdu->length);
 479
 480     res = CASendMulticastData(data->remoteEndpoint, pdu->hdr, pdu->length);
 481     if (CA_STATUS_OK != res)
 482     {
 483         OIC_LOG_V(ERROR, TAG, "send failed:%d", res);
 484         goto exit;
 485     }
 486
 487     coap_delete_list(options);
 488     coap_delete_pdu(pdu);
 489     return res;
 490
 491 exit:
 492     CAErrorHandler(data->remoteEndpoint, pdu->hdr, pdu->length, res);
 493     coap_delete_list(options);
 494     coap_delete_pdu(pdu);
 495     return res;
 496 }
 497
 498 static CAResult_t CAProcessSendData(const CAData_t *data)
 499 {
 500     VERIFY_NON_NULL(data, TAG, "data");
 501     VERIFY_NON_NULL(data->remoteEndpoint, TAG, "remoteEndpoint");
 502
 503     CAResult_t res = CA_STATUS_FAILED;
 504
 505     CASendDataType_t type = data->type;
 506
 507     coap_pdu_t *pdu = NULL;
 508     CAInfo_t *info = NULL;
 509     coap_list_t *options = NULL;
 510     coap_transport_type transport;
 511
 512     if (SEND_TYPE_UNICAST == type)
 513     {
 514         OIC_LOG(DEBUG,TAG,"Unicast message");
 515 #ifdef ROUTING_GATEWAY
 516         /*
 517          * When forwarding a packet, do not attempt retransmission as its the responsibility of
 518          * packet originator node
 519          */
 520         bool skipRetransmission = false;
 521 #endif
 522
 523         if (NULL != data->requestInfo)
 524         {
 525             OIC_LOG(DEBUG, TAG, "requestInfo is available..");
 526
 527             info = &data->requestInfo->info;
 528 #ifdef ROUTING_GATEWAY
 529             skipRetransmission = data->requestInfo->info.skipRetransmission;
 530 #endif
 531             pdu = CAGeneratePDU(data->requestInfo->method, info, data->remoteEndpoint,
 532                                 &options, &transport);
 533         }
 534         else if (NULL != data->responseInfo)
 535         {
 536             OIC_LOG(DEBUG, TAG, "responseInfo is available..");
 537
 538             info = &data->responseInfo->info;
 539 #ifdef ROUTING_GATEWAY
 540             skipRetransmission = data->responseInfo->info.skipRetransmission;
 541 #endif
 542             pdu = CAGeneratePDU(data->responseInfo->result, info, data->remoteEndpoint,
 543                                 &options, &transport);
 544         }
 545         else
 546         {
 547             OIC_LOG(DEBUG, TAG, "request info, response info is empty");
 548             return CA_STATUS_INVALID_PARAM;
 549         }
 550
 551         // interface controller function call.
 552         if (NULL != pdu)
 553         {
 554 #ifdef WITH_BWT
 555             if (CAIsSupportedBlockwiseTransfer(data->remoteEndpoint->adapter))
 556             {
 557                 // Blockwise transfer
 558                 if (NULL != info)
 559                 {
 560                     CAResult_t res = CAAddBlockOption(&pdu, info,
 561                                                       data->remoteEndpoint,
 562                                                       &options);
 563                     if (CA_STATUS_OK != res)
 564                     {
 565                         OIC_LOG(INFO, TAG, "to write block option has failed");
 566                         CAErrorHandler(data->remoteEndpoint, pdu->hdr, pdu->length, res);
 567                         coap_delete_list(options);
 568                         coap_delete_pdu(pdu);
 569                         return res;
 570                     }
 571                 }
 572             }
 573 #endif // WITH_BWT
 574             CALogPDUInfo(pdu, data->remoteEndpoint);
 575
 576             res = CASendUnicastData(data->remoteEndpoint, pdu->hdr, pdu->length);
 577             if (CA_STATUS_OK != res)
 578             {
 579                 OIC_LOG_V(ERROR, TAG, "send failed:%d", res);
 580                 CAErrorHandler(data->remoteEndpoint, pdu->hdr, pdu->length, res);
 581                 coap_delete_list(options);
 582                 coap_delete_pdu(pdu);
 583                 return res;
 584             }
 585
 586 #ifdef WITH_TCP
 587             if (CAIsSupportedCoAPOverTCP(data->remoteEndpoint->adapter))
 588             {
 589                 OIC_LOG(INFO, TAG, "retransmission will be not worked");
 590             }
 591             else
 592 #endif
 593 #ifdef ROUTING_GATEWAY
 594             if(!skipRetransmission)
 595 #endif
 596             {
 597                 // for retransmission
 598                 res = CARetransmissionSentData(&g_retransmissionContext, data->remoteEndpoint,
 599                                                pdu->hdr, pdu->length);
 600                 if ((CA_STATUS_OK != res) && (CA_NOT_SUPPORTED != res))
 601                 {
 602                     //when retransmission not supported this will return CA_NOT_SUPPORTED, ignore
 603                     OIC_LOG_V(INFO, TAG, "retransmission is not enabled due to error, res : %d", res);
 604                     coap_delete_list(options);
 605                     coap_delete_pdu(pdu);
 606                     return res;
 607                 }
 608             }
 609
 610             coap_delete_list(options);
 611             coap_delete_pdu(pdu);
 612         }
 613         else
 614         {
 615             OIC_LOG(ERROR,TAG,"Failed to generate unicast PDU");
 616             CASendErrorInfo(data->remoteEndpoint, info, CA_SEND_FAILED);
 617             return CA_SEND_FAILED;
 618         }
 619     }
 620     else if (SEND_TYPE_MULTICAST == type)
 621     {
 622         OIC_LOG(DEBUG,TAG,"Multicast message");
 623 #ifdef WITH_TCP
 624         /*
 625          * If CoAP over TCP is enabled, the CoAP pdu wont be same for IP and other adapters.
 626          * That's why we need to generate two pdu's, one for IP and second for other transports.
 627          * Two possible cases we might have to split: a) when adapter is CA_DEFAULT_ADAPTER
 628          * b) when one of the adapter is IP adapter(ex: CA_ADAPTER_IP | CA_ADAPTER_GATT_BTLE)
 629          */
 630         if (data->remoteEndpoint->adapter == CA_DEFAULT_ADAPTER ||
 631                 (CA_ADAPTER_IP & data->remoteEndpoint->adapter &&
 632                     CA_ADAPTER_IP != data->remoteEndpoint->adapter))
 633         {
 634             if (data->remoteEndpoint->adapter == CA_DEFAULT_ADAPTER)
 635             {
 636                 data->remoteEndpoint->adapter = CA_ALL_ADAPTERS ^ CA_ADAPTER_IP;
 637             }
 638             else
 639             {
 640                 data->remoteEndpoint->adapter = data->remoteEndpoint->adapter ^ CA_ADAPTER_IP;
 641             }
 642             CAProcessMulticastData(data);
 643             data->remoteEndpoint->adapter = CA_ADAPTER_IP;
 644             CAProcessMulticastData(data);
 645         }
 646         else
 647         {
 648             CAProcessMulticastData(data);
 649         }
 650 #else
 651         CAProcessMulticastData(data);
 652 #endif
 653     }
 654
 655     return CA_STATUS_OK;
 656 }
 657
 658 #ifndef SINGLE_THREAD
 659 static void CASendThreadProcess(void *threadData)
 660 {
 661     CAData_t *data = (CAData_t *) threadData;
 662     CAProcessSendData(data);
 663 }
 664 #endif
 665
 666 /*
 667  * If a second message arrives with the same message ID, token and the other address
 668  * family, drop it.  Typically, IPv6 beats IPv4, so the IPv4 message is dropped.
 669  */
 670 static bool CADropSecondMessage(CAHistory_t *history, const CAEndpoint_t *ep, uint16_t id,
 671                                 CAToken_t token, uint8_t tokenLength)
 672 {
 673     if (!ep)
 674     {
 675         return true;
 676     }
 677     if (ep->adapter != CA_ADAPTER_IP)
 678     {
 679         return false;
 680     }
 681     if (!caglobals.ip.dualstack)
 682     {
 683         return false;
 684     }
 685
 686     if (tokenLength > CA_MAX_TOKEN_LEN)
 687     {
 688         /*
 689          * If token length is more than CA_MAX_TOKEN_LEN,
 690          * we compare the first CA_MAX_TOKEN_LEN bytes only.
 691          */
 692         tokenLength = CA_MAX_TOKEN_LEN;
 693     }
 694
 695     bool ret = false;
 696     CATransportFlags_t familyFlags = ep->flags & CA_IPFAMILY_MASK;
 697
 698     for (size_t i = 0; i < sizeof(history->items) / sizeof(history->items[0]); i++)
 699     {
 700         CAHistoryItem_t *item = &(history->items[i]);
 701         if (id == item->messageId && tokenLength == item->tokenLength
 702             && memcmp(item->token, token, tokenLength) == 0)
 703         {
 704             if ((familyFlags ^ item->flags) == CA_IPFAMILY_MASK)
 705             {
 706                 OIC_LOG_V(INFO, TAG, "IPv%c duplicate message ignored",
 707                           familyFlags & CA_IPV6 ? '6' : '4');
 708                 ret = true;
 709                 break;
 710             }
 711         }
 712     }
 713
 714     history->items[history->nextIndex].flags = familyFlags;
 715     history->items[history->nextIndex].messageId = id;
 716     if (token && tokenLength)
 717     {
 718         memcpy(history->items[history->nextIndex].token, token, tokenLength);
 719         history->items[history->nextIndex].tokenLength = tokenLength;
 720     }
 721
 722     if (++history->nextIndex >= HISTORYSIZE)
 723     {
 724         history->nextIndex = 0;
 725     }
 726
 727     return ret;
 728 }
 729
 730 static void CAReceivedPacketCallback(const CASecureEndpoint_t *sep,
 731                                      const void *data, uint32_t dataLen)
 732 {
 733     VERIFY_NON_NULL_VOID(sep, TAG, "remoteEndpoint");
 734     VERIFY_NON_NULL_VOID(data, TAG, "data");
 735
 736     OIC_LOG(DEBUG, TAG, "received pdu data :");
 737     OIC_LOG_BUFFER(DEBUG, TAG,  data, dataLen);
 738
 739     uint32_t code = CA_NOT_FOUND;
 740     CAData_t *cadata = NULL;
 741
 742     coap_pdu_t *pdu = (coap_pdu_t *) CAParsePDU((const char *) data, dataLen, &code,
 743                                                 &(sep->endpoint));
 744     if (NULL == pdu)
 745     {
 746         OIC_LOG(ERROR, TAG, "Parse PDU failed");
 747         return;
 748     }
 749
 750     OIC_LOG_V(DEBUG, TAG, "code = %d", code);
 751     if (CA_GET == code || CA_POST == code || CA_PUT == code || CA_DELETE == code)
 752     {
 753         cadata = CAGenerateHandlerData(&(sep->endpoint), &(sep->identity), pdu, CA_REQUEST_DATA);
 754         if (!cadata)
 755         {
 756             OIC_LOG(ERROR, TAG, "CAReceivedPacketCallback, CAGenerateHandlerData failed!");
 757             coap_delete_pdu(pdu);
 758             return;
 759         }
 760     }
 761     else
 762     {
 763         cadata = CAGenerateHandlerData(&(sep->endpoint), &(sep->identity), pdu, CA_RESPONSE_DATA);
 764         if (!cadata)
 765         {
 766             OIC_LOG(ERROR, TAG, "CAReceivedPacketCallback, CAGenerateHandlerData failed!");
 767             coap_delete_pdu(pdu);
 768             return;
 769         }
 770
 771 #ifdef WITH_TCP
 772         if (CAIsSupportedCoAPOverTCP(sep->endpoint.adapter))
 773         {
 774             OIC_LOG(INFO, TAG, "retransmission is not supported");
 775         }
 776         else
 777 #endif
 778         {
 779             // for retransmission
 780             void *retransmissionPdu = NULL;
 781             CARetransmissionReceivedData(&g_retransmissionContext, cadata->remoteEndpoint, pdu->hdr,
 782                                          pdu->length, &retransmissionPdu);
 783
 784             // get token from saved data in retransmission list
 785             if (retransmissionPdu && CA_EMPTY == code)
 786             {
 787                 if (cadata->responseInfo)
 788                 {
 789                     CAInfo_t *info = &cadata->responseInfo->info;
 790                     CAResult_t res = CAGetTokenFromPDU((const coap_hdr_t *)retransmissionPdu,
 791                                                        info, &(sep->endpoint));
 792                     if (CA_STATUS_OK != res)
 793                     {
 794                         OIC_LOG(ERROR, TAG, "fail to get Token from retransmission list");
 795                         OICFree(info->token);
 796                         info->tokenLength = 0;
 797                     }
 798                 }
 799             }
 800             OICFree(retransmissionPdu);
 801         }
 802     }
 803
 804     cadata->type = SEND_TYPE_UNICAST;
 805
 806 #ifdef SINGLE_THREAD
 807     CAProcessReceivedData(cadata);
 808 #else
 809 #ifdef WITH_BWT
 810     if (CAIsSupportedBlockwiseTransfer(sep->endpoint.adapter))
 811     {
 812         CAResult_t res = CAReceiveBlockWiseData(pdu, &(sep->endpoint), cadata, dataLen);
 813         if (CA_NOT_SUPPORTED == res || CA_REQUEST_TIMEOUT == res)
 814         {
 815             OIC_LOG(ERROR, TAG, "this message does not have block option");
 816             CAQueueingThreadAddData(&g_receiveThread, cadata, sizeof(CAData_t));
 817         }
 818         else
 819         {
 820             CADestroyData(cadata, sizeof(CAData_t));
 821         }
 822     }
 823     else
 824 #endif
 825     {
 826         CAQueueingThreadAddData(&g_receiveThread, cadata, sizeof(CAData_t));
 827     }
 828 #endif // SINGLE_THREAD
 829
 830     coap_delete_pdu(pdu);
 831 }
 832
 833 static void CANetworkChangedCallback(const CAEndpoint_t *info, CANetworkStatus_t status)
 834 {
 835     (void)info;
 836     (void)status;
 837
 838     if (g_nwMonitorHandler)
 839     {
 840         g_nwMonitorHandler(info, status);
 841     }
 842 }
 843
 844 void CAHandleRequestResponseCallbacks()
 845 {
 846 #ifdef SINGLE_THREAD
 847     CAReadData();
 848     CARetransmissionBaseRoutine((void *)&g_retransmissionContext);
 849 #else
 850 #ifdef SINGLE_HANDLE
 851     // parse the data and call the callbacks.
 852     // #1 parse the data
 853     // #2 get endpoint
 854
 855     ca_mutex_lock(g_receiveThread.threadMutex);
 856
 857     u_queue_message_t *item = u_queue_get_element(g_receiveThread.dataQueue);
 858
 859     ca_mutex_unlock(g_receiveThread.threadMutex);
 860
 861     if (NULL == item || NULL == item->msg)
 862     {
 863         return;
 864     }
 865
 866     // get endpoint
 867     CAData_t *td = (CAData_t *) item->msg;
 868
 869     if (td->requestInfo && g_requestHandler)
 870     {
 871         OIC_LOG_V(DEBUG, TAG, "request callback : %d", td->requestInfo->info.numOptions);
 872         g_requestHandler(td->remoteEndpoint, td->requestInfo);
 873     }
 874     else if (td->responseInfo && g_responseHandler)
 875     {
 876         OIC_LOG_V(DEBUG, TAG, "response callback : %d", td->responseInfo->info.numOptions);
 877         g_responseHandler(td->remoteEndpoint, td->responseInfo);
 878     }
 879     else if (td->errorInfo && g_errorHandler)
 880     {
 881         OIC_LOG_V(DEBUG, TAG, "error callback error: %d", td->errorInfo->result);
 882         g_errorHandler(td->remoteEndpoint, td->errorInfo);
 883     }
 884
 885     CADestroyData(item->msg, sizeof(CAData_t));
 886     OICFree(item);
 887
 888 #endif // SINGLE_HANDLE
 889 #endif // SINGLE_THREAD
 890 }
 891
 892 static CAData_t* CAPrepareSendData(const CAEndpoint_t *endpoint, const void *sendData,
 893                                    CADataType_t dataType)
 894 {
 895     OIC_LOG(DEBUG, TAG, "CAPrepareSendData IN");
 896
 897     CAData_t *cadata = (CAData_t *) OICCalloc(1, sizeof(CAData_t));
 898     if (!cadata)
 899     {
 900         OIC_LOG(ERROR, TAG, "memory allocation failed");
 901         return NULL;
 902     }
 903
 904     if(CA_REQUEST_DATA == dataType)
 905     {
 906         // clone request info
 907         CARequestInfo_t *request = CACloneRequestInfo((CARequestInfo_t *)sendData);
 908
 909         if(!request)
 910         {
 911             OIC_LOG(ERROR, TAG, "CACloneRequestInfo failed");
 912             goto exit;
 913         }
 914
 915         cadata->type = request->isMulticast ? SEND_TYPE_MULTICAST : SEND_TYPE_UNICAST;
 916         cadata->requestInfo =  request;
 917     }
 918     else if(CA_RESPONSE_DATA == dataType)
 919     {
 920         // clone response info
 921         CAResponseInfo_t *response = CACloneResponseInfo((CAResponseInfo_t *)sendData);
 922
 923         if(!response)
 924         {
 925             OIC_LOG(ERROR, TAG, "CACloneResponseInfo failed");
 926             goto exit;
 927         }
 928
 929         cadata->type = response->isMulticast ? SEND_TYPE_MULTICAST : SEND_TYPE_UNICAST;
 930         cadata->responseInfo = response;
 931     }
 932     else
 933     {
 934         OIC_LOG(ERROR, TAG, "CAPrepareSendData unknown data type");
 935         goto exit;
 936     }
 937
 938     CAEndpoint_t* ep = CACloneEndpoint(endpoint);
 939     if (!ep)
 940     {
 941         OIC_LOG(ERROR, TAG, "endpoint clone failed");
 942         CADestroyData(cadata, sizeof(CAData_t));
 943         return NULL;
 944     }
 945
 946     cadata->remoteEndpoint = ep;
 947     cadata->dataType = dataType;
 948     return cadata;
 949
 950 exit:
 951     OICFree(cadata);
 952     return NULL;
 953 }
 954
 955 CAResult_t CADetachSendMessage(const CAEndpoint_t *endpoint, const void *sendMsg,
 956                                CADataType_t dataType)
 957 {
 958     VERIFY_NON_NULL(endpoint, TAG, "endpoint");
 959     VERIFY_NON_NULL(sendMsg, TAG, "sendMsg");
 960
 961     if (false == CAIsSelectedNetworkAvailable())
 962     {
 963         return CA_STATUS_FAILED;
 964     }
 965
 966 #ifdef ARDUINO
 967     // If max retransmission queue is reached, then don't handle new request
 968     if (CA_MAX_RT_ARRAY_SIZE == u_arraylist_length(g_retransmissionContext.dataList))
 969     {
 970         OIC_LOG(ERROR, TAG, "max RT queue size reached!");
 971         return CA_SEND_FAILED;
 972     }
 973 #endif // ARDUINO
 974
 975     CAData_t *data = CAPrepareSendData(endpoint, sendMsg, dataType);
 976     if(!data)
 977     {
 978         OIC_LOG(ERROR, TAG, "CAPrepareSendData failed");
 979         return CA_MEMORY_ALLOC_FAILED;
 980     }
 981
 982 #ifdef SINGLE_THREAD
 983     CAResult_t result = CAProcessSendData(data);
 984     if(CA_STATUS_OK != result)
 985     {
 986         OIC_LOG(ERROR, TAG, "CAProcessSendData failed");
 987         CADestroyData(data, sizeof(CAData_t));
 988         return result;
 989     }
 990
 991     CADestroyData(data, sizeof(CAData_t));
 992 #else
 993 #ifdef WITH_BWT
 994     if (CAIsSupportedBlockwiseTransfer(endpoint->adapter))
 995     {
 996         // send block data
 997         CAResult_t res = CASendBlockWiseData(data);
 998         if(CA_NOT_SUPPORTED == res)
 999         {
1000             OIC_LOG(DEBUG, TAG, "normal msg will be sent");
1001             CAQueueingThreadAddData(&g_sendThread, data, sizeof(CAData_t));
1002             return CA_STATUS_OK;
1003         }
1004         else
1005         {
1006             CADestroyData(data, sizeof(CAData_t));
1007         }
1008         return res;
1009     }
1010     else
1011 #endif // WITH_BWT
1012     {
1013         CAQueueingThreadAddData(&g_sendThread, data, sizeof(CAData_t));
1014     }
1015 #endif // SINGLE_THREAD
1016
1017     return CA_STATUS_OK;
1018 }
1019
1020 void CASetInterfaceCallbacks(CARequestCallback ReqHandler, CAResponseCallback RespHandler,
1021                              CAErrorCallback errorHandler)
1022 {
1023     g_requestHandler = ReqHandler;
1024     g_responseHandler = RespHandler;
1025     g_errorHandler = errorHandler;
1026 }
1027
1028 void CASetNetworkMonitorCallback(CANetworkMonitorCallback nwMonitorHandler)
1029 {
1030     g_nwMonitorHandler = nwMonitorHandler;
1031 }
1032
1033 CAResult_t CAInitializeMessageHandler()
1034 {
1035     CASetPacketReceivedCallback(CAReceivedPacketCallback);
1036
1037     CASetNetworkChangeCallback(CANetworkChangedCallback);
1038     CASetErrorHandleCallback(CAErrorHandler);
1039
1040 #ifndef SINGLE_THREAD
1041     // create thread pool
1042     CAResult_t res = ca_thread_pool_init(MAX_THREAD_POOL_SIZE, &g_threadPoolHandle);
1043     if (CA_STATUS_OK != res)
1044     {
1045         OIC_LOG(ERROR, TAG, "thread pool initialize error.");
1046         return res;
1047     }
1048
1049     // send thread initialize
1050     res = CAQueueingThreadInitialize(&g_sendThread, g_threadPoolHandle,
1051                                      CASendThreadProcess, CADestroyData);
1052     if (CA_STATUS_OK != res)
1053     {
1054         OIC_LOG(ERROR, TAG, "Failed to Initialize send queue thread");
1055         ca_thread_pool_free(g_threadPoolHandle);
1056         g_threadPoolHandle = NULL;
1057         return res;
1058     }
1059
1060     // start send thread
1061     res = CAQueueingThreadStart(&g_sendThread);
1062     if (CA_STATUS_OK != res)
1063     {
1064         OIC_LOG(ERROR, TAG, "thread start error(send thread).");
1065         ca_thread_pool_free(g_threadPoolHandle);
1066         g_threadPoolHandle = NULL;
1067         CAQueueingThreadDestroy(&g_sendThread);
1068         return res;
1069     }
1070
1071     // receive thread initialize
1072     res = CAQueueingThreadInitialize(&g_receiveThread, g_threadPoolHandle,
1073                                      CAReceiveThreadProcess, CADestroyData);
1074     if (CA_STATUS_OK != res)
1075     {
1076         OIC_LOG(ERROR, TAG, "Failed to Initialize receive queue thread");
1077         ca_thread_pool_free(g_threadPoolHandle);
1078         g_threadPoolHandle = NULL;
1079         CAQueueingThreadDestroy(&g_sendThread);
1080         return res;
1081     }
1082
1083 #ifndef SINGLE_HANDLE // This will be enabled when RI supports multi threading
1084     // start receive thread
1085     res = CAQueueingThreadStart(&g_receiveThread);
1086     if (CA_STATUS_OK != res)
1087     {
1088         OIC_LOG(ERROR, TAG, "thread start error(receive thread).");
1089         ca_thread_pool_free(g_threadPoolHandle);
1090         g_threadPoolHandle = NULL;
1091         CAQueueingThreadDestroy(&g_sendThread);
1092         CAQueueingThreadDestroy(&g_receiveThread);
1093         return res;
1094     }
1095 #endif // SINGLE_HANDLE
1096
1097     // retransmission initialize
1098     res = CARetransmissionInitialize(&g_retransmissionContext, g_threadPoolHandle,
1099                                      CASendUnicastData, CATimeoutCallback, NULL);
1100     if (CA_STATUS_OK != res)
1101     {
1102         OIC_LOG(ERROR, TAG, "Failed to Initialize Retransmission.");
1103         ca_thread_pool_free(g_threadPoolHandle);
1104         g_threadPoolHandle = NULL;
1105         CAQueueingThreadDestroy(&g_sendThread);
1106         CAQueueingThreadDestroy(&g_receiveThread);
1107         return res;
1108     }
1109
1110 #ifdef WITH_BWT
1111     // block-wise transfer initialize
1112     res = CAInitializeBlockWiseTransfer(CAAddDataToSendThread, CAAddDataToReceiveThread);
1113     if (CA_STATUS_OK != res)
1114     {
1115         OIC_LOG(ERROR, TAG, "Failed to Initialize BlockWiseTransfer.");
1116         ca_thread_pool_free(g_threadPoolHandle);
1117         g_threadPoolHandle = NULL;
1118         CAQueueingThreadDestroy(&g_sendThread);
1119         CAQueueingThreadDestroy(&g_receiveThread);
1120         CARetransmissionDestroy(&g_retransmissionContext);
1121         return res;
1122     }
1123 #endif
1124
1125     // start retransmission
1126     res = CARetransmissionStart(&g_retransmissionContext);
1127     if (CA_STATUS_OK != res)
1128     {
1129         OIC_LOG(ERROR, TAG, "thread start error(retransmission thread).");
1130         ca_thread_pool_free(g_threadPoolHandle);
1131         g_threadPoolHandle = NULL;
1132         CAQueueingThreadDestroy(&g_sendThread);
1133         CAQueueingThreadDestroy(&g_receiveThread);
1134         CARetransmissionDestroy(&g_retransmissionContext);
1135         return res;
1136     }
1137
1138     // initialize interface adapters by controller
1139     CAInitializeAdapters(g_threadPoolHandle);
1140 #else
1141     // retransmission initialize
1142     CAResult_t res = CARetransmissionInitialize(&g_retransmissionContext, NULL, CASendUnicastData,
1143                                                 CATimeoutCallback, NULL);
1144     if (CA_STATUS_OK != res)
1145     {
1146         OIC_LOG(ERROR, TAG, "Failed to Initialize Retransmission.");
1147         return res;
1148     }
1149
1150     CAInitializeAdapters();
1151 #endif // SINGLE_THREAD
1152
1153     return CA_STATUS_OK;
1154 }
1155
1156 void CATerminateMessageHandler()
1157 {
1158 #ifndef SINGLE_THREAD
1159     CATransportAdapter_t connType;
1160     u_arraylist_t *list = CAGetSelectedNetworkList();
1161     uint32_t length = u_arraylist_length(list);
1162
1163     uint32_t i = 0;
1164     for (i = 0; i < length; i++)
1165     {
1166         void* ptrType = u_arraylist_get(list, i);
1167
1168         if (NULL == ptrType)
1169         {
1170             continue;
1171         }
1172
1173         connType = *(CATransportAdapter_t *)ptrType;
1174         CAStopAdapter(connType);
1175     }
1176
1177     // stop retransmission
1178     if (NULL != g_retransmissionContext.threadMutex)
1179     {
1180         CARetransmissionStop(&g_retransmissionContext);
1181     }
1182
1183     // stop thread
1184     // delete thread data
1185     if (NULL != g_sendThread.threadMutex)
1186     {
1187         CAQueueingThreadStop(&g_sendThread);
1188     }
1189
1190     // stop thread
1191     // delete thread data
1192     if (NULL != g_receiveThread.threadMutex)
1193     {
1194 #ifndef SINGLE_HANDLE // This will be enabled when RI supports multi threading
1195         CAQueueingThreadStop(&g_receiveThread);
1196 #endif
1197     }
1198
1199     // destroy thread pool
1200     if (NULL != g_threadPoolHandle)
1201     {
1202         ca_thread_pool_free(g_threadPoolHandle);
1203         g_threadPoolHandle = NULL;
1204     }
1205
1206 #ifdef WITH_BWT
1207     CATerminateBlockWiseTransfer();
1208 #endif
1209     CARetransmissionDestroy(&g_retransmissionContext);
1210     CAQueueingThreadDestroy(&g_sendThread);
1211     CAQueueingThreadDestroy(&g_receiveThread);
1212
1213     // terminate interface adapters by controller
1214     CATerminateAdapters();
1215 #else
1216     // terminate interface adapters by controller
1217     CATerminateAdapters();
1218
1219     // stop retransmission
1220     CARetransmissionStop(&g_retransmissionContext);
1221     CARetransmissionDestroy(&g_retransmissionContext);
1222 #endif // SINGLE_THREAD
1223 }
1224
1225 void CALogPDUInfo(coap_pdu_t *pdu, const CAEndpoint_t *endpoint)
1226 {
1227     VERIFY_NON_NULL_VOID(pdu, TAG, "pdu");
1228     VERIFY_NON_NULL_VOID(endpoint, TAG, "endpoint");
1229
1230     OIC_LOG_V(DEBUG, TAG, "PDU Maker - payload : %s", pdu->data);
1231
1232 #ifdef WITH_TCP
1233     if (CAIsSupportedCoAPOverTCP(endpoint->adapter))
1234     {
1235         OIC_LOG(DEBUG, TAG, "pdu header data :");
1236         OIC_LOG_BUFFER(DEBUG, TAG,  (const uint8_t *) pdu->hdr, pdu->length);
1237     }
1238     else
1239 #endif
1240     {
1241         OIC_LOG_V(DEBUG, TAG, "PDU Maker - type : %d", pdu->hdr->coap_hdr_udp_t.type);
1242
1243         OIC_LOG_V(DEBUG, TAG, "PDU Maker - code : %d", pdu->hdr->coap_hdr_udp_t.code);
1244
1245         OIC_LOG(DEBUG, TAG, "PDU Maker - token :");
1246
1247         OIC_LOG_BUFFER(DEBUG, TAG, pdu->hdr->coap_hdr_udp_t.token,
1248                        pdu->hdr->coap_hdr_udp_t.token_length);
1249     }
1250 }
1251
1252 static void CALogPayloadInfo(CAInfo_t *info)
1253 {
1254     if(info)
1255     {
1256         if (info->options)
1257         {
1258             for (uint32_t i = 0; i < info->numOptions; i++)
1259             {
1260                 OIC_LOG_V(DEBUG, TAG, "optionID: %u", info->options[i].optionID);
1261
1262                 OIC_LOG_V(DEBUG, TAG, "list: %s", info->options[i].optionData);
1263             }
1264         }
1265
1266         if (info->payload)
1267         {
1268             OIC_LOG_V(DEBUG, TAG, "payload: %p(%zu)", info->payload,
1269                       info->payloadSize);
1270         }
1271
1272         if (info->token)
1273         {
1274             OIC_LOG(DEBUG, TAG, "token:");
1275             OIC_LOG_BUFFER(DEBUG, TAG, (const uint8_t *) info->token,
1276                            info->tokenLength);
1277         }
1278         OIC_LOG_V(DEBUG, TAG, "msgID: %u", info->messageId);
1279     }
1280     else
1281     {
1282         OIC_LOG(DEBUG, TAG, "info is NULL, cannot output log data");
1283     }
1284 }
1285
1286 void CAErrorHandler(const CAEndpoint_t *endpoint,
1287                     const void *data, uint32_t dataLen,
1288                     CAResult_t result)
1289 {
1290     OIC_LOG(DEBUG, TAG, "CAErrorHandler IN");
1291
1292 #ifndef SINGLE_THREAD
1293     VERIFY_NON_NULL_VOID(endpoint, TAG, "remoteEndpoint");
1294     VERIFY_NON_NULL_VOID(data, TAG, "data");
1295
1296     uint32_t code = CA_NOT_FOUND;
1297     //Do not free remoteEndpoint and data. Currently they will be freed in data thread
1298     //Get PDU data
1299     coap_pdu_t *pdu = (coap_pdu_t *)CAParsePDU((const char *)data, dataLen, &code, endpoint);
1300     if (NULL == pdu)
1301     {
1302         OIC_LOG(ERROR, TAG, "Parse PDU failed");
1303         return;
1304     }
1305
1306     CAData_t *cadata = CAGenerateHandlerData(endpoint, NULL, pdu, CA_ERROR_DATA);
1307     if(!cadata)
1308     {
1309         OIC_LOG(ERROR, TAG, "CAErrorHandler, CAGenerateHandlerData failed!");
1310         coap_delete_pdu(pdu);
1311         return;
1312     }
1313
1314     cadata->errorInfo->result = result;
1315
1316     CAQueueingThreadAddData(&g_receiveThread, cadata, sizeof(CAData_t));
1317     coap_delete_pdu(pdu);
1318 #endif
1319
1320     OIC_LOG(DEBUG, TAG, "CAErrorHandler OUT");
1321     return;
1322 }
1323
1324 static void CASendErrorInfo(const CAEndpoint_t *endpoint, const CAInfo_t *info, CAResult_t result)
1325 {
1326     OIC_LOG(DEBUG, TAG, "CASendErrorInfo IN");
1327 #ifndef SINGLE_THREAD
1328     CAData_t *cadata = (CAData_t *) OICCalloc(1, sizeof(CAData_t));
1329     if (!cadata)
1330     {
1331         OIC_LOG(ERROR, TAG, "cadata memory allocation failed");
1332         return;
1333     }
1334
1335     CAEndpoint_t* ep = CACloneEndpoint(endpoint);
1336     if (!ep)
1337     {
1338         OIC_LOG(ERROR, TAG, "endpoint clone failed");
1339         OICFree(cadata);
1340         return;
1341     }
1342
1343     CAErrorInfo_t *errorInfo = (CAErrorInfo_t *)OICCalloc(1, sizeof (CAErrorInfo_t));
1344     if (!errorInfo)
1345     {
1346         OIC_LOG(ERROR, TAG, "errorInfo memory allocation failed");
1347         OICFree(cadata);
1348         CAFreeEndpoint(ep);
1349         return;
1350     }
1351
1352     CAResult_t res = CACloneInfo(info, &errorInfo->info);
1353     if (CA_STATUS_OK != res)
1354     {
1355         OIC_LOG(ERROR, TAG, "info clone failed");
1356         OICFree(cadata);
1357         OICFree(errorInfo);
1358         CAFreeEndpoint(ep);
1359         return;
1360     }
1361
1362     errorInfo->result = result;
1363     cadata->remoteEndpoint = ep;
1364     cadata->errorInfo = errorInfo;
1365     cadata->dataType = CA_ERROR_DATA;
1366
1367     CAQueueingThreadAddData(&g_receiveThread, cadata, sizeof(CAData_t));
1368 #endif
1369     OIC_LOG(DEBUG, TAG, "CASendErrorInfo OUT");
1370 }