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 (CA_ADAPTER_GATT_BTLE != data->remoteEndpoint->adapter
 418 #ifdef WITH_TCP
 419                     && !CAIsSupportedCoAPOverTCP(data->remoteEndpoint->adapter)
 420 #endif
 421                     )
 422             {
 423                 // Blockwise transfer
 424                 res = CAAddBlockOption(&pdu, info, data->remoteEndpoint, &options);
 425                 if (CA_STATUS_OK != res)
 426                 {
 427                     OIC_LOG(DEBUG, TAG, "CAAddBlockOption has failed");
 428                     goto exit;
 429                 }
 430             }
 431 #endif // WITH_BWT
 432         }
 433         else
 434         {
 435             OIC_LOG(ERROR,TAG,"Failed to generate multicast PDU");
 436             CASendErrorInfo(data->remoteEndpoint, info, CA_SEND_FAILED);
 437             return res;
 438         }
 439     }
 440     else if (NULL != data->responseInfo)
 441     {
 442         OIC_LOG(DEBUG, TAG, "responseInfo is available..");
 443
 444         info = &data->responseInfo->info;
 445         pdu = CAGeneratePDU(data->responseInfo->result, info, data->remoteEndpoint,
 446                             &options, &transport);
 447
 448         if (NULL != pdu)
 449         {
 450 #ifdef WITH_BWT
 451             if (CA_ADAPTER_GATT_BTLE != data->remoteEndpoint->adapter
 452 #ifdef WITH_TCP
 453                     && !CAIsSupportedCoAPOverTCP(data->remoteEndpoint->adapter)
 454 #endif
 455                     )
 456             {
 457                 // Blockwise transfer
 458                 if (NULL != info)
 459                 {
 460                     res = CAAddBlockOption(&pdu, info, data->remoteEndpoint, &options);
 461                     if (CA_STATUS_OK != res)
 462                     {
 463                         OIC_LOG(INFO, TAG, "to write block option has failed");
 464                         goto exit;
 465                     }
 466                 }
 467             }
 468 #endif // WITH_BWT
 469         }
 470         else
 471         {
 472             OIC_LOG(ERROR,TAG,"Failed to generate multicast PDU");
 473             CASendErrorInfo(data->remoteEndpoint, info, CA_SEND_FAILED);
 474             return res;
 475         }
 476     }
 477     else
 478     {
 479         OIC_LOG(ERROR, TAG, "request or response info is empty");
 480         return res;
 481     }
 482
 483     CALogPDUInfo(pdu, data->remoteEndpoint);
 484
 485     OIC_LOG(DEBUG, TAG, "pdu to send :");
 486     OIC_LOG_BUFFER(DEBUG, TAG,  (uint8_t*)pdu->hdr, pdu->length);
 487
 488     res = CASendMulticastData(data->remoteEndpoint, pdu->hdr, pdu->length);
 489     if (CA_STATUS_OK != res)
 490     {
 491         OIC_LOG_V(ERROR, TAG, "send failed:%d", res);
 492         goto exit;
 493     }
 494
 495     coap_delete_list(options);
 496     coap_delete_pdu(pdu);
 497     return res;
 498
 499 exit:
 500     CAErrorHandler(data->remoteEndpoint, pdu->hdr, pdu->length, res);
 501     coap_delete_list(options);
 502     coap_delete_pdu(pdu);
 503     return res;
 504 }
 505
 506 static CAResult_t CAProcessSendData(const CAData_t *data)
 507 {
 508     VERIFY_NON_NULL(data, TAG, "data");
 509     VERIFY_NON_NULL(data->remoteEndpoint, TAG, "remoteEndpoint");
 510
 511     CAResult_t res = CA_STATUS_FAILED;
 512
 513     CASendDataType_t type = data->type;
 514
 515     coap_pdu_t *pdu = NULL;
 516     CAInfo_t *info = NULL;
 517     coap_list_t *options = NULL;
 518     coap_transport_type transport;
 519
 520     if (SEND_TYPE_UNICAST == type)
 521     {
 522         OIC_LOG(DEBUG,TAG,"Unicast message");
 523 #ifdef ROUTING_GATEWAY
 524         /*
 525          * When forwarding a packet, do not attempt retransmission as its the responsibility of
 526          * packet originator node
 527          */
 528         bool skipRetransmission = false;
 529 #endif
 530
 531         if (NULL != data->requestInfo)
 532         {
 533             OIC_LOG(DEBUG, TAG, "requestInfo is available..");
 534
 535             info = &data->requestInfo->info;
 536 #ifdef ROUTING_GATEWAY
 537             skipRetransmission = data->requestInfo->info.skipRetransmission;
 538 #endif
 539             pdu = CAGeneratePDU(data->requestInfo->method, info, data->remoteEndpoint,
 540                                 &options, &transport);
 541         }
 542         else if (NULL != data->responseInfo)
 543         {
 544             OIC_LOG(DEBUG, TAG, "responseInfo is available..");
 545
 546             info = &data->responseInfo->info;
 547 #ifdef ROUTING_GATEWAY
 548             skipRetransmission = data->responseInfo->info.skipRetransmission;
 549 #endif
 550             pdu = CAGeneratePDU(data->responseInfo->result, info, data->remoteEndpoint,
 551                                 &options, &transport);
 552         }
 553         else
 554         {
 555             OIC_LOG(DEBUG, TAG, "request info, response info is empty");
 556             return CA_STATUS_INVALID_PARAM;
 557         }
 558
 559         // interface controller function call.
 560         if (NULL != pdu)
 561         {
 562 #ifdef WITH_BWT
 563             if (CA_ADAPTER_GATT_BTLE != data->remoteEndpoint->adapter
 564 #ifdef WITH_TCP
 565                     && !CAIsSupportedCoAPOverTCP(data->remoteEndpoint->adapter)
 566 #endif
 567                     )
 568             {
 569                 // Blockwise transfer
 570                 if (NULL != info)
 571                 {
 572                     CAResult_t res = CAAddBlockOption(&pdu, info,
 573                                                       data->remoteEndpoint,
 574                                                       &options);
 575                     if (CA_STATUS_OK != res)
 576                     {
 577                         OIC_LOG(INFO, TAG, "to write block option has failed");
 578                         CAErrorHandler(data->remoteEndpoint, pdu->hdr, pdu->length, res);
 579                         coap_delete_list(options);
 580                         coap_delete_pdu(pdu);
 581                         return res;
 582                     }
 583                 }
 584             }
 585 #endif // WITH_BWT
 586             CALogPDUInfo(pdu, data->remoteEndpoint);
 587
 588             res = CASendUnicastData(data->remoteEndpoint, pdu->hdr, pdu->length);
 589             if (CA_STATUS_OK != res)
 590             {
 591                 OIC_LOG_V(ERROR, TAG, "send failed:%d", res);
 592                 CAErrorHandler(data->remoteEndpoint, pdu->hdr, pdu->length, res);
 593                 coap_delete_list(options);
 594                 coap_delete_pdu(pdu);
 595                 return res;
 596             }
 597
 598 #ifdef WITH_TCP
 599             if (CAIsSupportedCoAPOverTCP(data->remoteEndpoint->adapter))
 600             {
 601                 OIC_LOG(INFO, TAG, "retransmission will be not worked");
 602             }
 603             else
 604 #endif
 605 #ifdef ROUTING_GATEWAY
 606             if(!skipRetransmission)
 607 #endif
 608             {
 609                 // for retransmission
 610                 res = CARetransmissionSentData(&g_retransmissionContext, data->remoteEndpoint,
 611                                                pdu->hdr, pdu->length);
 612                 if ((CA_STATUS_OK != res) && (CA_NOT_SUPPORTED != res))
 613                 {
 614                     //when retransmission not supported this will return CA_NOT_SUPPORTED, ignore
 615                     OIC_LOG_V(INFO, TAG, "retransmission is not enabled due to error, res : %d", res);
 616                     coap_delete_list(options);
 617                     coap_delete_pdu(pdu);
 618                     return res;
 619                 }
 620             }
 621
 622             coap_delete_list(options);
 623             coap_delete_pdu(pdu);
 624         }
 625         else
 626         {
 627             OIC_LOG(ERROR,TAG,"Failed to generate unicast PDU");
 628             CASendErrorInfo(data->remoteEndpoint, info, CA_SEND_FAILED);
 629             return CA_SEND_FAILED;
 630         }
 631     }
 632     else if (SEND_TYPE_MULTICAST == type)
 633     {
 634         OIC_LOG(DEBUG,TAG,"Multicast message");
 635 #ifdef WITH_TCP
 636         /*
 637          * If CoAP over TCP is enabled, the CoAP pdu wont be same for IP and other adapters.
 638          * That's why we need to generate two pdu's, one for IP and second for other transports.
 639          * Two possible cases we might have to split: a) when adapter is CA_DEFAULT_ADAPTER
 640          * b) when one of the adapter is IP adapter(ex: CA_ADAPTER_IP | CA_ADAPTER_GATT_BTLE)
 641          */
 642         if (data->remoteEndpoint->adapter == CA_DEFAULT_ADAPTER ||
 643                 (CA_ADAPTER_IP & data->remoteEndpoint->adapter &&
 644                     CA_ADAPTER_IP != data->remoteEndpoint->adapter))
 645         {
 646             if (data->remoteEndpoint->adapter == CA_DEFAULT_ADAPTER)
 647             {
 648                 data->remoteEndpoint->adapter = CA_ALL_ADAPTERS ^ CA_ADAPTER_IP;
 649             }
 650             else
 651             {
 652                 data->remoteEndpoint->adapter = data->remoteEndpoint->adapter ^ CA_ADAPTER_IP;
 653             }
 654             CAProcessMulticastData(data);
 655             data->remoteEndpoint->adapter = CA_ADAPTER_IP;
 656             CAProcessMulticastData(data);
 657         }
 658         else
 659         {
 660             CAProcessMulticastData(data);
 661         }
 662 #else
 663         CAProcessMulticastData(data);
 664 #endif
 665     }
 666
 667     return CA_STATUS_OK;
 668 }
 669
 670 #ifndef SINGLE_THREAD
 671 static void CASendThreadProcess(void *threadData)
 672 {
 673     CAData_t *data = (CAData_t *) threadData;
 674     CAProcessSendData(data);
 675 }
 676 #endif
 677
 678 /*
 679  * If a second message arrives with the same message ID, token and the other address
 680  * family, drop it.  Typically, IPv6 beats IPv4, so the IPv4 message is dropped.
 681  */
 682 static bool CADropSecondMessage(CAHistory_t *history, const CAEndpoint_t *ep, uint16_t id,
 683                                 CAToken_t token, uint8_t tokenLength)
 684 {
 685     if (!ep)
 686     {
 687         return true;
 688     }
 689     if (ep->adapter != CA_ADAPTER_IP)
 690     {
 691         return false;
 692     }
 693     if (!caglobals.ip.dualstack)
 694     {
 695         return false;
 696     }
 697
 698     if (tokenLength > CA_MAX_TOKEN_LEN)
 699     {
 700         /*
 701          * If token length is more than CA_MAX_TOKEN_LEN,
 702          * we compare the first CA_MAX_TOKEN_LEN bytes only.
 703          */
 704         tokenLength = CA_MAX_TOKEN_LEN;
 705     }
 706
 707     bool ret = false;
 708     CATransportFlags_t familyFlags = ep->flags & CA_IPFAMILY_MASK;
 709
 710     for (size_t i = 0; i < sizeof(history->items) / sizeof(history->items[0]); i++)
 711     {
 712         CAHistoryItem_t *item = &(history->items[i]);
 713         if (id == item->messageId && tokenLength == item->tokenLength
 714             && memcmp(item->token, token, tokenLength) == 0)
 715         {
 716             if ((familyFlags ^ item->flags) == CA_IPFAMILY_MASK)
 717             {
 718                 OIC_LOG_V(INFO, TAG, "IPv%c duplicate message ignored",
 719                           familyFlags & CA_IPV6 ? '6' : '4');
 720                 ret = true;
 721                 break;
 722             }
 723         }
 724     }
 725
 726     history->items[history->nextIndex].flags = familyFlags;
 727     history->items[history->nextIndex].messageId = id;
 728     if (token && tokenLength)
 729     {
 730         memcpy(history->items[history->nextIndex].token, token, tokenLength);
 731         history->items[history->nextIndex].tokenLength = tokenLength;
 732     }
 733
 734     if (++history->nextIndex >= HISTORYSIZE)
 735     {
 736         history->nextIndex = 0;
 737     }
 738
 739     return ret;
 740 }
 741
 742 static void CAReceivedPacketCallback(const CASecureEndpoint_t *sep,
 743                                      const void *data, uint32_t dataLen)
 744 {
 745     VERIFY_NON_NULL_VOID(sep, TAG, "remoteEndpoint");
 746     VERIFY_NON_NULL_VOID(data, TAG, "data");
 747
 748     OIC_LOG(DEBUG, TAG, "received pdu data :");
 749     OIC_LOG_BUFFER(DEBUG, TAG,  data, dataLen);
 750
 751     uint32_t code = CA_NOT_FOUND;
 752     CAData_t *cadata = NULL;
 753
 754     coap_pdu_t *pdu = (coap_pdu_t *) CAParsePDU((const char *) data, dataLen, &code,
 755                                                 &(sep->endpoint));
 756     if (NULL == pdu)
 757     {
 758         OIC_LOG(ERROR, TAG, "Parse PDU failed");
 759         return;
 760     }
 761
 762     OIC_LOG_V(DEBUG, TAG, "code = %d", code);
 763     if (CA_GET == code || CA_POST == code || CA_PUT == code || CA_DELETE == code)
 764     {
 765         cadata = CAGenerateHandlerData(&(sep->endpoint), &(sep->identity), pdu, CA_REQUEST_DATA);
 766         if (!cadata)
 767         {
 768             OIC_LOG(ERROR, TAG, "CAReceivedPacketCallback, CAGenerateHandlerData failed!");
 769             coap_delete_pdu(pdu);
 770             return;
 771         }
 772     }
 773     else
 774     {
 775         cadata = CAGenerateHandlerData(&(sep->endpoint), &(sep->identity), pdu, CA_RESPONSE_DATA);
 776         if (!cadata)
 777         {
 778             OIC_LOG(ERROR, TAG, "CAReceivedPacketCallback, CAGenerateHandlerData failed!");
 779             coap_delete_pdu(pdu);
 780             return;
 781         }
 782
 783 #ifdef WITH_TCP
 784         if (CAIsSupportedCoAPOverTCP(sep->endpoint.adapter))
 785         {
 786             OIC_LOG(INFO, TAG, "retransmission is not supported");
 787         }
 788         else
 789 #endif
 790         {
 791             // for retransmission
 792             void *retransmissionPdu = NULL;
 793             CARetransmissionReceivedData(&g_retransmissionContext, cadata->remoteEndpoint, pdu->hdr,
 794                                          pdu->length, &retransmissionPdu);
 795
 796 #ifndef WITH_BWT
 797             // get token from saved data in retransmission list
 798             if (retransmissionPdu && CA_EMPTY == code)
 799             {
 800                 if (cadata->responseInfo)
 801                 {
 802                     CAInfo_t *info = &cadata->responseInfo->info;
 803                     CAResult_t res = CAGetTokenFromPDU((const coap_hdr_t *)retransmissionPdu,
 804                                                        info, &(sep->endpoint));
 805                     if (CA_STATUS_OK != res)
 806                     {
 807                         OIC_LOG(ERROR, TAG, "fail to get Token from retransmission list");
 808                         OICFree(info->token);
 809                         info->tokenLength = 0;
 810                     }
 811                 }
 812             }
 813 #endif
 814             OICFree(retransmissionPdu);
 815         }
 816     }
 817
 818     cadata->type = SEND_TYPE_UNICAST;
 819
 820 #ifdef SINGLE_THREAD
 821     CAProcessReceivedData(cadata);
 822 #else
 823 #ifdef WITH_BWT
 824     if (CA_ADAPTER_GATT_BTLE != sep->endpoint.adapter
 825 #ifdef WITH_TCP
 826             && !CAIsSupportedCoAPOverTCP(sep->endpoint.adapter)
 827 #endif
 828             )
 829     {
 830         CAResult_t res = CAReceiveBlockWiseData(pdu, &(sep->endpoint), cadata, dataLen);
 831         if (CA_NOT_SUPPORTED == res || CA_REQUEST_TIMEOUT == res)
 832         {
 833             OIC_LOG(ERROR, TAG, "this message does not have block option");
 834             CAQueueingThreadAddData(&g_receiveThread, cadata, sizeof(CAData_t));
 835         }
 836         else
 837         {
 838             CADestroyData(cadata, sizeof(CAData_t));
 839         }
 840     }
 841     else
 842 #endif
 843     {
 844         CAQueueingThreadAddData(&g_receiveThread, cadata, sizeof(CAData_t));
 845     }
 846 #endif // SINGLE_THREAD
 847
 848     coap_delete_pdu(pdu);
 849 }
 850
 851 static void CANetworkChangedCallback(const CAEndpoint_t *info, CANetworkStatus_t status)
 852 {
 853     (void)info;
 854     (void)status;
 855
 856     if (g_nwMonitorHandler)
 857     {
 858         g_nwMonitorHandler(info, status);
 859     }
 860 }
 861
 862 void CAHandleRequestResponseCallbacks()
 863 {
 864 #ifdef SINGLE_THREAD
 865     CAReadData();
 866     CARetransmissionBaseRoutine((void *)&g_retransmissionContext);
 867 #else
 868 #ifdef SINGLE_HANDLE
 869     // parse the data and call the callbacks.
 870     // #1 parse the data
 871     // #2 get endpoint
 872
 873     ca_mutex_lock(g_receiveThread.threadMutex);
 874
 875     u_queue_message_t *item = u_queue_get_element(g_receiveThread.dataQueue);
 876
 877     ca_mutex_unlock(g_receiveThread.threadMutex);
 878
 879     if (NULL == item || NULL == item->msg)
 880     {
 881         return;
 882     }
 883
 884     // get endpoint
 885     CAData_t *td = (CAData_t *) item->msg;
 886
 887     if (td->requestInfo && g_requestHandler)
 888     {
 889         OIC_LOG_V(DEBUG, TAG, "request callback : %d", td->requestInfo->info.numOptions);
 890         g_requestHandler(td->remoteEndpoint, td->requestInfo);
 891     }
 892     else if (td->responseInfo && g_responseHandler)
 893     {
 894         OIC_LOG_V(DEBUG, TAG, "response callback : %d", td->responseInfo->info.numOptions);
 895         g_responseHandler(td->remoteEndpoint, td->responseInfo);
 896     }
 897     else if (td->errorInfo && g_errorHandler)
 898     {
 899         OIC_LOG_V(DEBUG, TAG, "error callback error: %d", td->errorInfo->result);
 900         g_errorHandler(td->remoteEndpoint, td->errorInfo);
 901     }
 902
 903     CADestroyData(item->msg, sizeof(CAData_t));
 904     OICFree(item);
 905
 906 #endif // SINGLE_HANDLE
 907 #endif // SINGLE_THREAD
 908 }
 909
 910 static CAData_t* CAPrepareSendData(const CAEndpoint_t *endpoint, const void *sendData,
 911                                    CADataType_t dataType)
 912 {
 913     OIC_LOG(DEBUG, TAG, "CAPrepareSendData IN");
 914
 915     CAData_t *cadata = (CAData_t *) OICCalloc(1, sizeof(CAData_t));
 916     if (!cadata)
 917     {
 918         OIC_LOG(ERROR, TAG, "memory allocation failed");
 919         return NULL;
 920     }
 921
 922     if(CA_REQUEST_DATA == dataType)
 923     {
 924         // clone request info
 925         CARequestInfo_t *request = CACloneRequestInfo((CARequestInfo_t *)sendData);
 926
 927         if(!request)
 928         {
 929             OIC_LOG(ERROR, TAG, "CACloneRequestInfo failed");
 930             goto exit;
 931         }
 932
 933         cadata->type = request->isMulticast ? SEND_TYPE_MULTICAST : SEND_TYPE_UNICAST;
 934         cadata->requestInfo =  request;
 935     }
 936     else if(CA_RESPONSE_DATA == dataType)
 937     {
 938         // clone response info
 939         CAResponseInfo_t *response = CACloneResponseInfo((CAResponseInfo_t *)sendData);
 940
 941         if(!response)
 942         {
 943             OIC_LOG(ERROR, TAG, "CACloneResponseInfo failed");
 944             goto exit;
 945         }
 946
 947         cadata->type = response->isMulticast ? SEND_TYPE_MULTICAST : SEND_TYPE_UNICAST;
 948         cadata->responseInfo = response;
 949     }
 950     else
 951     {
 952         OIC_LOG(ERROR, TAG, "CAPrepareSendData unknown data type");
 953         goto exit;
 954     }
 955
 956     CAEndpoint_t* ep = CACloneEndpoint(endpoint);
 957     if (!ep)
 958     {
 959         OIC_LOG(ERROR, TAG, "endpoint clone failed");
 960         CADestroyData(cadata, sizeof(CAData_t));
 961         return NULL;
 962     }
 963
 964     cadata->remoteEndpoint = ep;
 965     cadata->dataType = dataType;
 966     return cadata;
 967
 968 exit:
 969     OICFree(cadata);
 970     return NULL;
 971 }
 972
 973 CAResult_t CADetachSendMessage(const CAEndpoint_t *endpoint, const void *sendMsg,
 974                                CADataType_t dataType)
 975 {
 976     VERIFY_NON_NULL(endpoint, TAG, "endpoint");
 977     VERIFY_NON_NULL(sendMsg, TAG, "sendMsg");
 978
 979     if (false == CAIsSelectedNetworkAvailable())
 980     {
 981         return CA_STATUS_FAILED;
 982     }
 983
 984 #ifdef ARDUINO
 985     // If max retransmission queue is reached, then don't handle new request
 986     if (CA_MAX_RT_ARRAY_SIZE == u_arraylist_length(g_retransmissionContext.dataList))
 987     {
 988         OIC_LOG(ERROR, TAG, "max RT queue size reached!");
 989         return CA_SEND_FAILED;
 990     }
 991 #endif // ARDUINO
 992
 993     CAData_t *data = CAPrepareSendData(endpoint, sendMsg, dataType);
 994     if(!data)
 995     {
 996         OIC_LOG(ERROR, TAG, "CAPrepareSendData failed");
 997         return CA_MEMORY_ALLOC_FAILED;
 998     }
 999
1000 #ifdef SINGLE_THREAD
1001     CAResult_t result = CAProcessSendData(data);
1002     if(CA_STATUS_OK != result)
1003     {
1004         OIC_LOG(ERROR, TAG, "CAProcessSendData failed");
1005         CADestroyData(data, sizeof(CAData_t));
1006         return result;
1007     }
1008
1009     CADestroyData(data, sizeof(CAData_t));
1010 #else
1011 #ifdef WITH_BWT
1012     if (CA_ADAPTER_GATT_BTLE != endpoint->adapter
1013 #ifdef WITH_TCP
1014             && !CAIsSupportedCoAPOverTCP(data->remoteEndpoint->adapter)
1015 #endif
1016             )
1017     {
1018         // send block data
1019         CAResult_t res = CASendBlockWiseData(data);
1020         if(CA_NOT_SUPPORTED == res)
1021         {
1022             OIC_LOG(DEBUG, TAG, "normal msg will be sent");
1023             CAQueueingThreadAddData(&g_sendThread, data, sizeof(CAData_t));
1024             return CA_STATUS_OK;
1025         }
1026         else
1027         {
1028             CADestroyData(data, sizeof(CAData_t));
1029         }
1030         return res;
1031     }
1032     else
1033 #endif // WITH_BWT
1034     {
1035         CAQueueingThreadAddData(&g_sendThread, data, sizeof(CAData_t));
1036     }
1037 #endif // SINGLE_THREAD
1038
1039     return CA_STATUS_OK;
1040 }
1041
1042 void CASetInterfaceCallbacks(CARequestCallback ReqHandler, CAResponseCallback RespHandler,
1043                              CAErrorCallback errorHandler)
1044 {
1045     g_requestHandler = ReqHandler;
1046     g_responseHandler = RespHandler;
1047     g_errorHandler = errorHandler;
1048 }
1049
1050 void CASetNetworkMonitorCallback(CANetworkMonitorCallback nwMonitorHandler)
1051 {
1052     g_nwMonitorHandler = nwMonitorHandler;
1053 }
1054
1055 CAResult_t CAInitializeMessageHandler()
1056 {
1057     CASetPacketReceivedCallback(CAReceivedPacketCallback);
1058
1059     CASetNetworkChangeCallback(CANetworkChangedCallback);
1060     CASetErrorHandleCallback(CAErrorHandler);
1061
1062 #ifndef SINGLE_THREAD
1063     // create thread pool
1064     CAResult_t res = ca_thread_pool_init(MAX_THREAD_POOL_SIZE, &g_threadPoolHandle);
1065     if (CA_STATUS_OK != res)
1066     {
1067         OIC_LOG(ERROR, TAG, "thread pool initialize error.");
1068         return res;
1069     }
1070
1071     // send thread initialize
1072     res = CAQueueingThreadInitialize(&g_sendThread, g_threadPoolHandle,
1073                                      CASendThreadProcess, CADestroyData);
1074     if (CA_STATUS_OK != res)
1075     {
1076         OIC_LOG(ERROR, TAG, "Failed to Initialize send queue thread");
1077         ca_thread_pool_free(g_threadPoolHandle);
1078         g_threadPoolHandle = NULL;
1079         return res;
1080     }
1081
1082     // start send thread
1083     res = CAQueueingThreadStart(&g_sendThread);
1084     if (CA_STATUS_OK != res)
1085     {
1086         OIC_LOG(ERROR, TAG, "thread start error(send thread).");
1087         ca_thread_pool_free(g_threadPoolHandle);
1088         g_threadPoolHandle = NULL;
1089         CAQueueingThreadDestroy(&g_sendThread);
1090         return res;
1091     }
1092
1093     // receive thread initialize
1094     res = CAQueueingThreadInitialize(&g_receiveThread, g_threadPoolHandle,
1095                                      CAReceiveThreadProcess, CADestroyData);
1096     if (CA_STATUS_OK != res)
1097     {
1098         OIC_LOG(ERROR, TAG, "Failed to Initialize receive queue thread");
1099         ca_thread_pool_free(g_threadPoolHandle);
1100         g_threadPoolHandle = NULL;
1101         CAQueueingThreadDestroy(&g_sendThread);
1102         return res;
1103     }
1104
1105 #ifndef SINGLE_HANDLE // This will be enabled when RI supports multi threading
1106     // start receive thread
1107     res = CAQueueingThreadStart(&g_receiveThread);
1108     if (CA_STATUS_OK != res)
1109     {
1110         OIC_LOG(ERROR, TAG, "thread start error(receive thread).");
1111         ca_thread_pool_free(g_threadPoolHandle);
1112         g_threadPoolHandle = NULL;
1113         CAQueueingThreadDestroy(&g_sendThread);
1114         CAQueueingThreadDestroy(&g_receiveThread);
1115         return res;
1116     }
1117 #endif // SINGLE_HANDLE
1118
1119     // retransmission initialize
1120     res = CARetransmissionInitialize(&g_retransmissionContext, g_threadPoolHandle,
1121                                      CASendUnicastData, CATimeoutCallback, NULL);
1122     if (CA_STATUS_OK != res)
1123     {
1124         OIC_LOG(ERROR, TAG, "Failed to Initialize Retransmission.");
1125         ca_thread_pool_free(g_threadPoolHandle);
1126         g_threadPoolHandle = NULL;
1127         CAQueueingThreadDestroy(&g_sendThread);
1128         CAQueueingThreadDestroy(&g_receiveThread);
1129         return res;
1130     }
1131
1132 #ifdef WITH_BWT
1133     // block-wise transfer initialize
1134     res = CAInitializeBlockWiseTransfer(CAAddDataToSendThread, CAAddDataToReceiveThread);
1135     if (CA_STATUS_OK != res)
1136     {
1137         OIC_LOG(ERROR, TAG, "Failed to Initialize BlockWiseTransfer.");
1138         ca_thread_pool_free(g_threadPoolHandle);
1139         g_threadPoolHandle = NULL;
1140         CAQueueingThreadDestroy(&g_sendThread);
1141         CAQueueingThreadDestroy(&g_receiveThread);
1142         CARetransmissionDestroy(&g_retransmissionContext);
1143         return res;
1144     }
1145 #endif
1146
1147     // start retransmission
1148     res = CARetransmissionStart(&g_retransmissionContext);
1149     if (CA_STATUS_OK != res)
1150     {
1151         OIC_LOG(ERROR, TAG, "thread start error(retransmission thread).");
1152         ca_thread_pool_free(g_threadPoolHandle);
1153         g_threadPoolHandle = NULL;
1154         CAQueueingThreadDestroy(&g_sendThread);
1155         CAQueueingThreadDestroy(&g_receiveThread);
1156         CARetransmissionDestroy(&g_retransmissionContext);
1157         return res;
1158     }
1159
1160     // initialize interface adapters by controller
1161     CAInitializeAdapters(g_threadPoolHandle);
1162 #else
1163     // retransmission initialize
1164     CAResult_t res = CARetransmissionInitialize(&g_retransmissionContext, NULL, CASendUnicastData,
1165                                                 CATimeoutCallback, NULL);
1166     if (CA_STATUS_OK != res)
1167     {
1168         OIC_LOG(ERROR, TAG, "Failed to Initialize Retransmission.");
1169         return res;
1170     }
1171
1172     CAInitializeAdapters();
1173 #endif // SINGLE_THREAD
1174
1175     return CA_STATUS_OK;
1176 }
1177
1178 void CATerminateMessageHandler()
1179 {
1180 #ifndef SINGLE_THREAD
1181     CATransportAdapter_t connType;
1182     u_arraylist_t *list = CAGetSelectedNetworkList();
1183     uint32_t length = u_arraylist_length(list);
1184
1185     uint32_t i = 0;
1186     for (i = 0; i < length; i++)
1187     {
1188         void* ptrType = u_arraylist_get(list, i);
1189
1190         if (NULL == ptrType)
1191         {
1192             continue;
1193         }
1194
1195         connType = *(CATransportAdapter_t *)ptrType;
1196         CAStopAdapter(connType);
1197     }
1198
1199     // stop retransmission
1200     if (NULL != g_retransmissionContext.threadMutex)
1201     {
1202         CARetransmissionStop(&g_retransmissionContext);
1203     }
1204
1205     // stop thread
1206     // delete thread data
1207     if (NULL != g_sendThread.threadMutex)
1208     {
1209         CAQueueingThreadStop(&g_sendThread);
1210     }
1211
1212     // stop thread
1213     // delete thread data
1214     if (NULL != g_receiveThread.threadMutex)
1215     {
1216 #ifndef SINGLE_HANDLE // This will be enabled when RI supports multi threading
1217         CAQueueingThreadStop(&g_receiveThread);
1218 #endif
1219     }
1220
1221     // destroy thread pool
1222     if (NULL != g_threadPoolHandle)
1223     {
1224         ca_thread_pool_free(g_threadPoolHandle);
1225         g_threadPoolHandle = NULL;
1226     }
1227
1228 #ifdef WITH_BWT
1229     CATerminateBlockWiseTransfer();
1230 #endif
1231     CARetransmissionDestroy(&g_retransmissionContext);
1232     CAQueueingThreadDestroy(&g_sendThread);
1233     CAQueueingThreadDestroy(&g_receiveThread);
1234
1235     // terminate interface adapters by controller
1236     CATerminateAdapters();
1237 #else
1238     // terminate interface adapters by controller
1239     CATerminateAdapters();
1240
1241     // stop retransmission
1242     CARetransmissionStop(&g_retransmissionContext);
1243     CARetransmissionDestroy(&g_retransmissionContext);
1244 #endif // SINGLE_THREAD
1245 }
1246
1247 void CALogPDUInfo(coap_pdu_t *pdu, const CAEndpoint_t *endpoint)
1248 {
1249     VERIFY_NON_NULL_VOID(pdu, TAG, "pdu");
1250     VERIFY_NON_NULL_VOID(endpoint, TAG, "endpoint");
1251
1252     OIC_LOG_V(DEBUG, TAG, "PDU Maker - payload : %s", pdu->data);
1253
1254 #ifdef WITH_TCP
1255     if (CAIsSupportedCoAPOverTCP(endpoint->adapter))
1256     {
1257         OIC_LOG(DEBUG, TAG, "pdu header data :");
1258         OIC_LOG_BUFFER(DEBUG, TAG,  (const uint8_t *) pdu->hdr, pdu->length);
1259     }
1260     else
1261 #endif
1262     {
1263         OIC_LOG_V(DEBUG, TAG, "PDU Maker - type : %d", pdu->hdr->coap_hdr_udp_t.type);
1264
1265         OIC_LOG_V(DEBUG, TAG, "PDU Maker - code : %d", pdu->hdr->coap_hdr_udp_t.code);
1266
1267         OIC_LOG(DEBUG, TAG, "PDU Maker - token :");
1268
1269         OIC_LOG_BUFFER(DEBUG, TAG, pdu->hdr->coap_hdr_udp_t.token,
1270                        pdu->hdr->coap_hdr_udp_t.token_length);
1271     }
1272 }
1273
1274 static void CALogPayloadInfo(CAInfo_t *info)
1275 {
1276     if(info)
1277     {
1278         if (info->options)
1279         {
1280             for (uint32_t i = 0; i < info->numOptions; i++)
1281             {
1282                 OIC_LOG_V(DEBUG, TAG, "optionID: %u", info->options[i].optionID);
1283
1284                 OIC_LOG_V(DEBUG, TAG, "list: %s", info->options[i].optionData);
1285             }
1286         }
1287
1288         if (info->payload)
1289         {
1290             OIC_LOG_V(DEBUG, TAG, "payload: %p(%zu)", info->payload,
1291                       info->payloadSize);
1292         }
1293
1294         if (info->token)
1295         {
1296             OIC_LOG(DEBUG, TAG, "token:");
1297             OIC_LOG_BUFFER(DEBUG, TAG, (const uint8_t *) info->token,
1298                            info->tokenLength);
1299         }
1300         OIC_LOG_V(DEBUG, TAG, "msgID: %u", info->messageId);
1301     }
1302     else
1303     {
1304         OIC_LOG(DEBUG, TAG, "info is NULL, cannot output log data");
1305     }
1306 }
1307
1308 void CAErrorHandler(const CAEndpoint_t *endpoint,
1309                     const void *data, uint32_t dataLen,
1310                     CAResult_t result)
1311 {
1312     OIC_LOG(DEBUG, TAG, "CAErrorHandler IN");
1313
1314 #ifndef SINGLE_THREAD
1315     VERIFY_NON_NULL_VOID(endpoint, TAG, "remoteEndpoint");
1316     VERIFY_NON_NULL_VOID(data, TAG, "data");
1317
1318     uint32_t code = CA_NOT_FOUND;
1319     //Do not free remoteEndpoint and data. Currently they will be freed in data thread
1320     //Get PDU data
1321     coap_pdu_t *pdu = (coap_pdu_t *)CAParsePDU((const char *)data, dataLen, &code, endpoint);
1322     if (NULL == pdu)
1323     {
1324         OIC_LOG(ERROR, TAG, "Parse PDU failed");
1325         return;
1326     }
1327
1328     CAData_t *cadata = CAGenerateHandlerData(endpoint, NULL, pdu, CA_ERROR_DATA);
1329     if(!cadata)
1330     {
1331         OIC_LOG(ERROR, TAG, "CAErrorHandler, CAGenerateHandlerData failed!");
1332         coap_delete_pdu(pdu);
1333         return;
1334     }
1335
1336     cadata->errorInfo->result = result;
1337
1338     CAQueueingThreadAddData(&g_receiveThread, cadata, sizeof(CAData_t));
1339     coap_delete_pdu(pdu);
1340 #endif
1341
1342     OIC_LOG(DEBUG, TAG, "CAErrorHandler OUT");
1343     return;
1344 }
1345
1346 static void CASendErrorInfo(const CAEndpoint_t *endpoint, const CAInfo_t *info, CAResult_t result)
1347 {
1348     OIC_LOG(DEBUG, TAG, "CASendErrorInfo IN");
1349 #ifndef SINGLE_THREAD
1350     CAData_t *cadata = (CAData_t *) OICCalloc(1, sizeof(CAData_t));
1351     if (!cadata)
1352     {
1353         OIC_LOG(ERROR, TAG, "cadata memory allocation failed");
1354         return;
1355     }
1356
1357     CAEndpoint_t* ep = CACloneEndpoint(endpoint);
1358     if (!ep)
1359     {
1360         OIC_LOG(ERROR, TAG, "endpoint clone failed");
1361         OICFree(cadata);
1362         return;
1363     }
1364
1365     CAErrorInfo_t *errorInfo = (CAErrorInfo_t *)OICCalloc(1, sizeof (CAErrorInfo_t));
1366     if (!errorInfo)
1367     {
1368         OIC_LOG(ERROR, TAG, "errorInfo memory allocation failed");
1369         OICFree(cadata);
1370         CAFreeEndpoint(ep);
1371         return;
1372     }
1373
1374     CAResult_t res = CACloneInfo(info, &errorInfo->info);
1375     if (CA_STATUS_OK != res)
1376     {
1377         OIC_LOG(ERROR, TAG, "info clone failed");
1378         OICFree(cadata);
1379         OICFree(errorInfo);
1380         CAFreeEndpoint(ep);
1381         return;
1382     }
1383
1384     errorInfo->result = result;
1385     cadata->remoteEndpoint = ep;
1386     cadata->errorInfo = errorInfo;
1387     cadata->dataType = CA_ERROR_DATA;
1388
1389     CAQueueingThreadAddData(&g_receiveThread, cadata, sizeof(CAData_t));
1390 #endif
1391     OIC_LOG(DEBUG, TAG, "CASendErrorInfo OUT");
1392 }