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     CAResult_t res = CA_STATUS_FAILED;
 403
 404     coap_pdu_t *pdu = NULL;
 405     CAInfo_t *info = NULL;
 406     coap_list_t *options = NULL;
 407     coap_transport_type transport;
 408     if (NULL != data->requestInfo)
 409     {
 410         OIC_LOG(DEBUG, TAG, "requestInfo is available..");
 411
 412         info = &data->requestInfo->info;
 413         pdu = CAGeneratePDU(CA_GET, info, data->remoteEndpoint, &options, &transport);
 414
 415         if (NULL != pdu)
 416         {
 417 #ifdef WITH_BWT
 418             if (CA_ADAPTER_GATT_BTLE != data->remoteEndpoint->adapter
 419 #ifdef WITH_TCP
 420                     && !CAIsSupportedCoAPOverTCP(data->remoteEndpoint->adapter)
 421 #endif
 422                     )
 423             {
 424                 // Blockwise transfer
 425                 CAResult_t res = CAAddBlockOption(&pdu, info,
 426                                                   data->remoteEndpoint,
 427                                                   &options);
 428                 if (CA_STATUS_OK != res)
 429                 {
 430                     OIC_LOG(DEBUG, TAG, "CAAddBlockOption has failed");
 431                     CAErrorHandler(data->remoteEndpoint, pdu->hdr, pdu->length, res);
 432                     coap_delete_list(options);
 433                     coap_delete_pdu(pdu);
 434                     return res;
 435                 }
 436             }
 437 #endif // WITH_BWT
 438         }
 439         else
 440         {
 441             OIC_LOG(ERROR,TAG,"Failed to generate multicast PDU");
 442             CASendErrorInfo(data->remoteEndpoint, info, CA_SEND_FAILED);
 443             return CA_SEND_FAILED;
 444         }
 445     }
 446     else if (NULL != data->responseInfo)
 447     {
 448         OIC_LOG(DEBUG, TAG, "responseInfo is available..");
 449
 450         info = &data->responseInfo->info;
 451         pdu = CAGeneratePDU(data->responseInfo->result, info, data->remoteEndpoint,
 452                             &options, &transport);
 453
 454         if (NULL != pdu)
 455         {
 456 #ifdef WITH_BWT
 457             if (CA_ADAPTER_GATT_BTLE != data->remoteEndpoint->adapter
 458 #ifdef WITH_TCP
 459                     && !CAIsSupportedCoAPOverTCP(data->remoteEndpoint->adapter)
 460 #endif
 461                     )
 462             {
 463                 // Blockwise transfer
 464                 if (NULL != info)
 465                 {
 466                     CAResult_t res = CAAddBlockOption(&pdu, info,
 467                                                       data->remoteEndpoint,
 468                                                       &options);
 469                     if (CA_STATUS_OK != res)
 470                     {
 471                         OIC_LOG(INFO, TAG, "to write block option has failed");
 472                         CAErrorHandler(data->remoteEndpoint, pdu->hdr, pdu->length, res);
 473                         coap_delete_list(options);
 474                         coap_delete_pdu(pdu);
 475                         return res;
 476                     }
 477                 }
 478             }
 479 #endif // WITH_BWT
 480         }
 481         else
 482         {
 483             OIC_LOG(ERROR,TAG,"Failed to generate multicast PDU");
 484             CASendErrorInfo(data->remoteEndpoint, info, CA_SEND_FAILED);
 485             return CA_SEND_FAILED;
 486         }
 487     }
 488     else
 489     {
 490         OIC_LOG(ERROR, TAG, "request or response info is empty");
 491         return CA_SEND_FAILED;
 492     }
 493
 494     CALogPDUInfo(pdu, data->remoteEndpoint);
 495
 496     OIC_LOG(DEBUG, TAG, "pdu to send :");
 497     OIC_LOG_BUFFER(DEBUG, TAG,  (uint8_t*)pdu->hdr, pdu->length);
 498
 499     res = CASendMulticastData(data->remoteEndpoint, pdu->hdr, pdu->length);
 500     if (CA_STATUS_OK != res)
 501     {
 502         OIC_LOG_V(ERROR, TAG, "send failed:%d", res);
 503         CAErrorHandler(data->remoteEndpoint, pdu->hdr, pdu->length, res);
 504         coap_delete_list(options);
 505         coap_delete_pdu(pdu);
 506         return res;
 507     }
 508
 509     coap_delete_list(options);
 510     coap_delete_pdu(pdu);
 511     return CA_STATUS_OK;
 512 }
 513
 514 static CAResult_t CAProcessSendData(const CAData_t *data)
 515 {
 516     VERIFY_NON_NULL(data, TAG, "data");
 517     VERIFY_NON_NULL(data->remoteEndpoint, TAG, "remoteEndpoint");
 518
 519     CAResult_t res = CA_STATUS_FAILED;
 520
 521     CASendDataType_t type = data->type;
 522
 523     coap_pdu_t *pdu = NULL;
 524     CAInfo_t *info = NULL;
 525     coap_list_t *options = NULL;
 526     coap_transport_type transport;
 527
 528     if (SEND_TYPE_UNICAST == type)
 529     {
 530         OIC_LOG(DEBUG,TAG,"Unicast message");
 531 #ifdef ROUTING_GATEWAY
 532         /*
 533          * When forwarding a packet, do not attempt retransmission as its the responsibility of
 534          * packet originator node
 535          */
 536         bool skipRetransmission = false;
 537 #endif
 538
 539         if (NULL != data->requestInfo)
 540         {
 541             OIC_LOG(DEBUG, TAG, "requestInfo is available..");
 542
 543             info = &data->requestInfo->info;
 544 #ifdef ROUTING_GATEWAY
 545             skipRetransmission = data->requestInfo->info.skipRetransmission;
 546 #endif
 547             pdu = CAGeneratePDU(data->requestInfo->method, info, data->remoteEndpoint,
 548                                 &options, &transport);
 549         }
 550         else if (NULL != data->responseInfo)
 551         {
 552             OIC_LOG(DEBUG, TAG, "responseInfo is available..");
 553
 554             info = &data->responseInfo->info;
 555 #ifdef ROUTING_GATEWAY
 556             skipRetransmission = data->responseInfo->info.skipRetransmission;
 557 #endif
 558             pdu = CAGeneratePDU(data->responseInfo->result, info, data->remoteEndpoint,
 559                                 &options, &transport);
 560         }
 561         else
 562         {
 563             OIC_LOG(DEBUG, TAG, "request info, response info is empty");
 564             return CA_STATUS_INVALID_PARAM;
 565         }
 566
 567         // interface controller function call.
 568         if (NULL != pdu)
 569         {
 570 #ifdef WITH_BWT
 571             if (CA_ADAPTER_GATT_BTLE != data->remoteEndpoint->adapter
 572 #ifdef WITH_TCP
 573                     && !CAIsSupportedCoAPOverTCP(data->remoteEndpoint->adapter)
 574 #endif
 575                     )
 576             {
 577                 // Blockwise transfer
 578                 if (NULL != info)
 579                 {
 580                     CAResult_t res = CAAddBlockOption(&pdu, info,
 581                                                       data->remoteEndpoint,
 582                                                       &options);
 583                     if (CA_STATUS_OK != res)
 584                     {
 585                         OIC_LOG(INFO, TAG, "to write block option has failed");
 586                         CAErrorHandler(data->remoteEndpoint, pdu->hdr, pdu->length, res);
 587                         coap_delete_list(options);
 588                         coap_delete_pdu(pdu);
 589                         return res;
 590                     }
 591                 }
 592             }
 593 #endif // WITH_BWT
 594             CALogPDUInfo(pdu, data->remoteEndpoint);
 595
 596             res = CASendUnicastData(data->remoteEndpoint, pdu->hdr, pdu->length);
 597             if (CA_STATUS_OK != res)
 598             {
 599                 OIC_LOG_V(ERROR, TAG, "send failed:%d", res);
 600                 CAErrorHandler(data->remoteEndpoint, pdu->hdr, pdu->length, res);
 601                 coap_delete_list(options);
 602                 coap_delete_pdu(pdu);
 603                 return res;
 604             }
 605
 606 #ifdef WITH_TCP
 607             if (CAIsSupportedCoAPOverTCP(data->remoteEndpoint->adapter))
 608             {
 609                 OIC_LOG(INFO, TAG, "retransmission will be not worked");
 610             }
 611             else
 612 #endif
 613 #ifdef ROUTING_GATEWAY
 614             if(!skipRetransmission)
 615 #endif
 616             {
 617                 // for retransmission
 618                 res = CARetransmissionSentData(&g_retransmissionContext, data->remoteEndpoint,
 619                                                pdu->hdr, pdu->length);
 620                 if ((CA_STATUS_OK != res) && (CA_NOT_SUPPORTED != res))
 621                 {
 622                     //when retransmission not supported this will return CA_NOT_SUPPORTED, ignore
 623                     OIC_LOG_V(INFO, TAG, "retransmission is not enabled due to error, res : %d", res);
 624                     coap_delete_list(options);
 625                     coap_delete_pdu(pdu);
 626                     return res;
 627                 }
 628             }
 629
 630             coap_delete_list(options);
 631             coap_delete_pdu(pdu);
 632         }
 633         else
 634         {
 635             OIC_LOG(ERROR,TAG,"Failed to generate unicast PDU");
 636             CASendErrorInfo(data->remoteEndpoint, info, CA_SEND_FAILED);
 637             return CA_SEND_FAILED;
 638         }
 639     }
 640     else if (SEND_TYPE_MULTICAST == type)
 641     {
 642         OIC_LOG(DEBUG,TAG,"Multicast message");
 643 #ifdef WITH_TCP
 644         /*
 645          * If CoAP over TCP is enabled, the CoAP pdu wont be same for IP and other adapters.
 646          * That's why we need to generate two pdu's, one for IP and second for other transports.
 647          * Two possible cases we might have to split: a) when adapter is CA_DEFAULT_ADAPTER
 648          * b) when one of the adapter is IP adapter(ex: CA_ADAPTER_IP | CA_ADAPTER_GATT_BTLE)
 649          */
 650         if (data->remoteEndpoint->adapter == CA_DEFAULT_ADAPTER ||
 651                 (CA_ADAPTER_IP & data->remoteEndpoint->adapter &&
 652                     CA_ADAPTER_IP != data->remoteEndpoint->adapter))
 653         {
 654             data->remoteEndpoint->adapter = data->remoteEndpoint->adapter ^ CA_ADAPTER_IP;
 655             CAProcessMulticastData(data);
 656             data->remoteEndpoint->adapter = CA_ADAPTER_IP;
 657             CAProcessMulticastData(data);
 658         }
 659         else
 660         {
 661             CAProcessMulticastData(data);
 662         }
 663 #else
 664         CAProcessMulticastData(data);
 665 #endif
 666     }
 667
 668     return CA_STATUS_OK;
 669 }
 670
 671 #ifndef SINGLE_THREAD
 672 static void CASendThreadProcess(void *threadData)
 673 {
 674     CAData_t *data = (CAData_t *) threadData;
 675     CAProcessSendData(data);
 676 }
 677 #endif
 678
 679 /*
 680  * If a second message arrives with the same message ID, token and the other address
 681  * family, drop it.  Typically, IPv6 beats IPv4, so the IPv4 message is dropped.
 682  */
 683 static bool CADropSecondMessage(CAHistory_t *history, const CAEndpoint_t *ep, uint16_t id,
 684                                 CAToken_t token, uint8_t tokenLength)
 685 {
 686     if (!ep)
 687     {
 688         return true;
 689     }
 690     if (ep->adapter != CA_ADAPTER_IP)
 691     {
 692         return false;
 693     }
 694     if (!caglobals.ip.dualstack)
 695     {
 696         return false;
 697     }
 698
 699     if (tokenLength > CA_MAX_TOKEN_LEN)
 700     {
 701         /*
 702          * If token length is more than CA_MAX_TOKEN_LEN,
 703          * we compare the first CA_MAX_TOKEN_LEN bytes only.
 704          */
 705         tokenLength = CA_MAX_TOKEN_LEN;
 706     }
 707
 708     bool ret = false;
 709     CATransportFlags_t familyFlags = ep->flags & CA_IPFAMILY_MASK;
 710
 711     for (size_t i = 0; i < sizeof(history->items) / sizeof(history->items[0]); i++)
 712     {
 713         CAHistoryItem_t *item = &(history->items[i]);
 714         if (id == item->messageId && tokenLength == item->tokenLength
 715             && memcmp(item->token, token, tokenLength) == 0)
 716         {
 717             if ((familyFlags ^ item->flags) == CA_IPFAMILY_MASK)
 718             {
 719                 OIC_LOG_V(INFO, TAG, "IPv%c duplicate message ignored",
 720                           familyFlags & CA_IPV6 ? '6' : '4');
 721                 ret = true;
 722                 break;
 723             }
 724         }
 725     }
 726
 727     history->items[history->nextIndex].flags = familyFlags;
 728     history->items[history->nextIndex].messageId = id;
 729     if (token && tokenLength)
 730     {
 731         memcpy(history->items[history->nextIndex].token, token, tokenLength);
 732         history->items[history->nextIndex].tokenLength = tokenLength;
 733     }
 734
 735     if (++history->nextIndex >= HISTORYSIZE)
 736     {
 737         history->nextIndex = 0;
 738     }
 739
 740     return ret;
 741 }
 742
 743 static void CAReceivedPacketCallback(const CASecureEndpoint_t *sep,
 744                                      const void *data, uint32_t dataLen)
 745 {
 746     VERIFY_NON_NULL_VOID(sep, TAG, "remoteEndpoint");
 747     VERIFY_NON_NULL_VOID(data, TAG, "data");
 748
 749     OIC_LOG(DEBUG, TAG, "received pdu data :");
 750     OIC_LOG_BUFFER(DEBUG, TAG,  data, dataLen);
 751
 752     uint32_t code = CA_NOT_FOUND;
 753     CAData_t *cadata = NULL;
 754
 755     coap_pdu_t *pdu = (coap_pdu_t *) CAParsePDU((const char *) data, dataLen, &code,
 756                                                 &(sep->endpoint));
 757     if (NULL == pdu)
 758     {
 759         OIC_LOG(ERROR, TAG, "Parse PDU failed");
 760         return;
 761     }
 762
 763     OIC_LOG_V(DEBUG, TAG, "code = %d", code);
 764     if (CA_GET == code || CA_POST == code || CA_PUT == code || CA_DELETE == code)
 765     {
 766         cadata = CAGenerateHandlerData(&(sep->endpoint), &(sep->identity), pdu, CA_REQUEST_DATA);
 767         if (!cadata)
 768         {
 769             OIC_LOG(ERROR, TAG, "CAReceivedPacketCallback, CAGenerateHandlerData failed!");
 770             coap_delete_pdu(pdu);
 771             return;
 772         }
 773     }
 774     else
 775     {
 776         cadata = CAGenerateHandlerData(&(sep->endpoint), &(sep->identity), pdu, CA_RESPONSE_DATA);
 777         if (!cadata)
 778         {
 779             OIC_LOG(ERROR, TAG, "CAReceivedPacketCallback, CAGenerateHandlerData failed!");
 780             coap_delete_pdu(pdu);
 781             return;
 782         }
 783
 784 #ifdef WITH_TCP
 785         if (CAIsSupportedCoAPOverTCP(sep->endpoint.adapter))
 786         {
 787             OIC_LOG(INFO, TAG, "retransmission is not supported");
 788         }
 789         else
 790 #endif
 791         {
 792             // for retransmission
 793             void *retransmissionPdu = NULL;
 794             CARetransmissionReceivedData(&g_retransmissionContext, cadata->remoteEndpoint, pdu->hdr,
 795                                          pdu->length, &retransmissionPdu);
 796
 797 #ifndef WITH_BWT
 798             // get token from saved data in retransmission list
 799             if (retransmissionPdu && CA_EMPTY == code)
 800             {
 801                 if (cadata->responseInfo)
 802                 {
 803                     CAInfo_t *info = &cadata->responseInfo->info;
 804                     CAResult_t res = CAGetTokenFromPDU((const coap_hdr_t *)retransmissionPdu,
 805                                                        info, &(sep->endpoint));
 806                     if (CA_STATUS_OK != res)
 807                     {
 808                         OIC_LOG(ERROR, TAG, "fail to get Token from retransmission list");
 809                         OICFree(info->token);
 810                         info->tokenLength = 0;
 811                     }
 812                 }
 813             }
 814 #endif
 815             OICFree(retransmissionPdu);
 816         }
 817     }
 818
 819     cadata->type = SEND_TYPE_UNICAST;
 820
 821 #ifdef SINGLE_THREAD
 822     CAProcessReceivedData(cadata);
 823 #else
 824 #ifdef WITH_BWT
 825     if (CA_ADAPTER_GATT_BTLE != sep->endpoint.adapter
 826 #ifdef WITH_TCP
 827             && !CAIsSupportedCoAPOverTCP(sep->endpoint.adapter)
 828 #endif
 829             )
 830     {
 831         CAResult_t res = CAReceiveBlockWiseData(pdu, &(sep->endpoint), cadata, dataLen);
 832         if (CA_NOT_SUPPORTED == res || CA_REQUEST_TIMEOUT == res)
 833         {
 834             OIC_LOG(ERROR, TAG, "this message does not have block option");
 835             CAQueueingThreadAddData(&g_receiveThread, cadata, sizeof(CAData_t));
 836         }
 837         else
 838         {
 839             CADestroyData(cadata, sizeof(CAData_t));
 840         }
 841     }
 842     else
 843 #endif
 844     {
 845         CAQueueingThreadAddData(&g_receiveThread, cadata, sizeof(CAData_t));
 846     }
 847 #endif // SINGLE_THREAD
 848
 849     coap_delete_pdu(pdu);
 850 }
 851
 852 static void CANetworkChangedCallback(const CAEndpoint_t *info, CANetworkStatus_t status)
 853 {
 854     (void)info;
 855     (void)status;
 856
 857     if (g_nwMonitorHandler)
 858     {
 859         g_nwMonitorHandler(info, status);
 860     }
 861 }
 862
 863 void CAHandleRequestResponseCallbacks()
 864 {
 865 #ifdef SINGLE_THREAD
 866     CAReadData();
 867     CARetransmissionBaseRoutine((void *)&g_retransmissionContext);
 868 #else
 869 #ifdef SINGLE_HANDLE
 870     // parse the data and call the callbacks.
 871     // #1 parse the data
 872     // #2 get endpoint
 873
 874     ca_mutex_lock(g_receiveThread.threadMutex);
 875
 876     u_queue_message_t *item = u_queue_get_element(g_receiveThread.dataQueue);
 877
 878     ca_mutex_unlock(g_receiveThread.threadMutex);
 879
 880     if (NULL == item || NULL == item->msg)
 881     {
 882         return;
 883     }
 884
 885     // get endpoint
 886     CAData_t *td = (CAData_t *) item->msg;
 887
 888     if (td->requestInfo && g_requestHandler)
 889     {
 890         OIC_LOG_V(DEBUG, TAG, "request callback : %d", td->requestInfo->info.numOptions);
 891         g_requestHandler(td->remoteEndpoint, td->requestInfo);
 892     }
 893     else if (td->responseInfo && g_responseHandler)
 894     {
 895         OIC_LOG_V(DEBUG, TAG, "response callback : %d", td->responseInfo->info.numOptions);
 896         g_responseHandler(td->remoteEndpoint, td->responseInfo);
 897     }
 898     else if (td->errorInfo && g_errorHandler)
 899     {
 900         OIC_LOG_V(DEBUG, TAG, "error callback error: %d", td->errorInfo->result);
 901         g_errorHandler(td->remoteEndpoint, td->errorInfo);
 902     }
 903
 904     CADestroyData(item->msg, sizeof(CAData_t));
 905     OICFree(item);
 906
 907 #endif // SINGLE_HANDLE
 908 #endif // SINGLE_THREAD
 909 }
 910
 911 static CAData_t* CAPrepareSendData(const CAEndpoint_t *endpoint, const void *sendData,
 912                                    CADataType_t dataType)
 913 {
 914     OIC_LOG(DEBUG, TAG, "CAPrepareSendData IN");
 915
 916     CAData_t *cadata = (CAData_t *) OICCalloc(1, sizeof(CAData_t));
 917     if (!cadata)
 918     {
 919         OIC_LOG(ERROR, TAG, "memory allocation failed");
 920         return NULL;
 921     }
 922
 923     if(CA_REQUEST_DATA == dataType)
 924     {
 925         // clone request info
 926         CARequestInfo_t *request = CACloneRequestInfo((CARequestInfo_t *)sendData);
 927
 928         if(!request)
 929         {
 930             OIC_LOG(ERROR, TAG, "CACloneRequestInfo failed");
 931             OICFree(cadata);
 932             return NULL;
 933         }
 934
 935         cadata->type = request->isMulticast ? SEND_TYPE_MULTICAST : SEND_TYPE_UNICAST;
 936         cadata->requestInfo =  request;
 937     }
 938     else if(CA_RESPONSE_DATA == dataType)
 939     {
 940         // clone response info
 941         CAResponseInfo_t *response = CACloneResponseInfo((CAResponseInfo_t *)sendData);
 942
 943         if(!response)
 944         {
 945             OIC_LOG(ERROR, TAG, "CACloneResponseInfo failed");
 946             OICFree(cadata);
 947             return NULL;
 948         }
 949
 950         cadata->type = response->isMulticast ? SEND_TYPE_MULTICAST : SEND_TYPE_UNICAST;
 951         cadata->responseInfo = response;
 952     }
 953     else
 954     {
 955         OIC_LOG(ERROR, TAG, "CAPrepareSendData unknown data type");
 956         OICFree(cadata);
 957         return NULL;
 958     }
 959
 960     CAEndpoint_t* ep = CACloneEndpoint(endpoint);
 961     if (!ep)
 962     {
 963         OIC_LOG(ERROR, TAG, "endpoint clone failed");
 964         CADestroyData(cadata, sizeof(CAData_t));
 965         return NULL;
 966     }
 967
 968     cadata->remoteEndpoint = ep;
 969     cadata->dataType = dataType;
 970     return cadata;
 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 CAResult_t CADetachMessageResourceUri(const CAURI_t resourceUri, const CAToken_t token,
1043                                       uint8_t tokenLength, const CAHeaderOption_t *options,
1044                                       uint8_t numOptions)
1045 {
1046     (void)resourceUri;
1047     (void)token;
1048     (void)tokenLength;
1049     (void)options;
1050     (void)numOptions;
1051     return CA_NOT_SUPPORTED;
1052 }
1053
1054 void CASetInterfaceCallbacks(CARequestCallback ReqHandler, CAResponseCallback RespHandler,
1055                              CAErrorCallback errorHandler)
1056 {
1057     g_requestHandler = ReqHandler;
1058     g_responseHandler = RespHandler;
1059     g_errorHandler = errorHandler;
1060 }
1061
1062 void CASetNetworkMonitorCallback(CANetworkMonitorCallback nwMonitorHandler)
1063 {
1064     g_nwMonitorHandler = nwMonitorHandler;
1065 }
1066
1067 CAResult_t CAInitializeMessageHandler()
1068 {
1069     CASetPacketReceivedCallback(CAReceivedPacketCallback);
1070
1071     CASetNetworkChangeCallback(CANetworkChangedCallback);
1072     CASetErrorHandleCallback(CAErrorHandler);
1073
1074 #ifndef SINGLE_THREAD
1075     // create thread pool
1076     CAResult_t res = ca_thread_pool_init(MAX_THREAD_POOL_SIZE, &g_threadPoolHandle);
1077     if (CA_STATUS_OK != res)
1078     {
1079         OIC_LOG(ERROR, TAG, "thread pool initialize error.");
1080         return res;
1081     }
1082
1083     // send thread initialize
1084     res = CAQueueingThreadInitialize(&g_sendThread, g_threadPoolHandle,
1085                                      CASendThreadProcess, CADestroyData);
1086     if (CA_STATUS_OK != res)
1087     {
1088         OIC_LOG(ERROR, TAG, "Failed to Initialize send queue thread");
1089         ca_thread_pool_free(g_threadPoolHandle);
1090         g_threadPoolHandle = NULL;
1091         return res;
1092     }
1093
1094     // start send thread
1095     res = CAQueueingThreadStart(&g_sendThread);
1096     if (CA_STATUS_OK != res)
1097     {
1098         OIC_LOG(ERROR, TAG, "thread start error(send thread).");
1099         ca_thread_pool_free(g_threadPoolHandle);
1100         g_threadPoolHandle = NULL;
1101         CAQueueingThreadDestroy(&g_sendThread);
1102         return res;
1103     }
1104
1105     // receive thread initialize
1106     res = CAQueueingThreadInitialize(&g_receiveThread, g_threadPoolHandle,
1107                                      CAReceiveThreadProcess, CADestroyData);
1108     if (CA_STATUS_OK != res)
1109     {
1110         OIC_LOG(ERROR, TAG, "Failed to Initialize receive queue thread");
1111         ca_thread_pool_free(g_threadPoolHandle);
1112         g_threadPoolHandle = NULL;
1113         CAQueueingThreadDestroy(&g_sendThread);
1114         return res;
1115     }
1116
1117 #ifndef SINGLE_HANDLE // This will be enabled when RI supports multi threading
1118     // start receive thread
1119     res = CAQueueingThreadStart(&g_receiveThread);
1120     if (CA_STATUS_OK != res)
1121     {
1122         OIC_LOG(ERROR, TAG, "thread start error(receive thread).");
1123         ca_thread_pool_free(g_threadPoolHandle);
1124         g_threadPoolHandle = NULL;
1125         CAQueueingThreadDestroy(&g_sendThread);
1126         CAQueueingThreadDestroy(&g_receiveThread);
1127         return res;
1128     }
1129 #endif // SINGLE_HANDLE
1130
1131     // retransmission initialize
1132     res = CARetransmissionInitialize(&g_retransmissionContext, g_threadPoolHandle,
1133                                      CASendUnicastData, CATimeoutCallback, NULL);
1134     if (CA_STATUS_OK != res)
1135     {
1136         OIC_LOG(ERROR, TAG, "Failed to Initialize Retransmission.");
1137         ca_thread_pool_free(g_threadPoolHandle);
1138         g_threadPoolHandle = NULL;
1139         CAQueueingThreadDestroy(&g_sendThread);
1140         CAQueueingThreadDestroy(&g_receiveThread);
1141         return res;
1142     }
1143
1144 #ifdef WITH_BWT
1145     // block-wise transfer initialize
1146     res = CAInitializeBlockWiseTransfer(CAAddDataToSendThread, CAAddDataToReceiveThread);
1147     if (CA_STATUS_OK != res)
1148     {
1149         OIC_LOG(ERROR, TAG, "Failed to Initialize BlockWiseTransfer.");
1150         ca_thread_pool_free(g_threadPoolHandle);
1151         g_threadPoolHandle = NULL;
1152         CAQueueingThreadDestroy(&g_sendThread);
1153         CAQueueingThreadDestroy(&g_receiveThread);
1154         CARetransmissionDestroy(&g_retransmissionContext);
1155         return res;
1156     }
1157 #endif
1158
1159     // start retransmission
1160     res = CARetransmissionStart(&g_retransmissionContext);
1161     if (CA_STATUS_OK != res)
1162     {
1163         OIC_LOG(ERROR, TAG, "thread start error(retransmission thread).");
1164         ca_thread_pool_free(g_threadPoolHandle);
1165         g_threadPoolHandle = NULL;
1166         CAQueueingThreadDestroy(&g_sendThread);
1167         CAQueueingThreadDestroy(&g_receiveThread);
1168         CARetransmissionDestroy(&g_retransmissionContext);
1169         return res;
1170     }
1171
1172     // initialize interface adapters by controller
1173     CAInitializeAdapters(g_threadPoolHandle);
1174 #else
1175     // retransmission initialize
1176     CAResult_t res = CARetransmissionInitialize(&g_retransmissionContext, NULL, CASendUnicastData,
1177                                                 CATimeoutCallback, NULL);
1178     if (CA_STATUS_OK != res)
1179     {
1180         OIC_LOG(ERROR, TAG, "Failed to Initialize Retransmission.");
1181         return res;
1182     }
1183
1184     CAInitializeAdapters();
1185 #endif // SINGLE_THREAD
1186
1187     return CA_STATUS_OK;
1188 }
1189
1190 void CATerminateMessageHandler()
1191 {
1192 #ifndef SINGLE_THREAD
1193     CATransportAdapter_t connType;
1194     u_arraylist_t *list = CAGetSelectedNetworkList();
1195     uint32_t length = u_arraylist_length(list);
1196
1197     uint32_t i = 0;
1198     for (i = 0; i < length; i++)
1199     {
1200         void* ptrType = u_arraylist_get(list, i);
1201
1202         if (NULL == ptrType)
1203         {
1204             continue;
1205         }
1206
1207         connType = *(CATransportAdapter_t *)ptrType;
1208         CAStopAdapter(connType);
1209     }
1210
1211     // stop retransmission
1212     if (NULL != g_retransmissionContext.threadMutex)
1213     {
1214         CARetransmissionStop(&g_retransmissionContext);
1215     }
1216
1217     // stop thread
1218     // delete thread data
1219     if (NULL != g_sendThread.threadMutex)
1220     {
1221         CAQueueingThreadStop(&g_sendThread);
1222     }
1223
1224     // stop thread
1225     // delete thread data
1226     if (NULL != g_receiveThread.threadMutex)
1227     {
1228 #ifndef SINGLE_HANDLE // This will be enabled when RI supports multi threading
1229         CAQueueingThreadStop(&g_receiveThread);
1230 #endif
1231     }
1232
1233     // destroy thread pool
1234     if (NULL != g_threadPoolHandle)
1235     {
1236         ca_thread_pool_free(g_threadPoolHandle);
1237         g_threadPoolHandle = NULL;
1238     }
1239
1240 #ifdef WITH_BWT
1241     CATerminateBlockWiseTransfer();
1242 #endif
1243     CARetransmissionDestroy(&g_retransmissionContext);
1244     CAQueueingThreadDestroy(&g_sendThread);
1245     CAQueueingThreadDestroy(&g_receiveThread);
1246
1247     // terminate interface adapters by controller
1248     CATerminateAdapters();
1249 #else
1250     // terminate interface adapters by controller
1251     CATerminateAdapters();
1252
1253     // stop retransmission
1254     CARetransmissionStop(&g_retransmissionContext);
1255     CARetransmissionDestroy(&g_retransmissionContext);
1256 #endif // SINGLE_THREAD
1257 }
1258
1259 void CALogPDUInfo(coap_pdu_t *pdu, const CAEndpoint_t *endpoint)
1260 {
1261     VERIFY_NON_NULL_VOID(pdu, TAG, "pdu");
1262     VERIFY_NON_NULL_VOID(endpoint, TAG, "endpoint");
1263
1264     OIC_LOG_V(DEBUG, TAG, "PDU Maker - payload : %s", pdu->data);
1265
1266 #ifdef WITH_TCP
1267     if (CAIsSupportedCoAPOverTCP(endpoint->adapter))
1268     {
1269         OIC_LOG(DEBUG, TAG, "pdu header data :");
1270         OIC_LOG_BUFFER(DEBUG, TAG,  (const uint8_t *) pdu->hdr, pdu->length);
1271     }
1272     else
1273 #endif
1274     {
1275         OIC_LOG_V(DEBUG, TAG, "PDU Maker - type : %d", pdu->hdr->coap_hdr_udp_t.type);
1276
1277         OIC_LOG_V(DEBUG, TAG, "PDU Maker - code : %d", pdu->hdr->coap_hdr_udp_t.code);
1278
1279         OIC_LOG(DEBUG, TAG, "PDU Maker - token :");
1280
1281         OIC_LOG_BUFFER(DEBUG, TAG, pdu->hdr->coap_hdr_udp_t.token,
1282                        pdu->hdr->coap_hdr_udp_t.token_length);
1283     }
1284 }
1285
1286 static void CALogPayloadInfo(CAInfo_t *info)
1287 {
1288     if(info)
1289     {
1290         if (info->options)
1291         {
1292             for (uint32_t i = 0; i < info->numOptions; i++)
1293             {
1294                 OIC_LOG_V(DEBUG, TAG, "optionID: %u", info->options[i].optionID);
1295
1296                 OIC_LOG_V(DEBUG, TAG, "list: %s", info->options[i].optionData);
1297             }
1298         }
1299
1300         if (info->payload)
1301         {
1302             OIC_LOG_V(DEBUG, TAG, "payload: %p(%zu)", info->payload,
1303                       info->payloadSize);
1304         }
1305
1306         if (info->token)
1307         {
1308             OIC_LOG(DEBUG, TAG, "token:");
1309             OIC_LOG_BUFFER(DEBUG, TAG, (const uint8_t *) info->token,
1310                            info->tokenLength);
1311         }
1312         OIC_LOG_V(DEBUG, TAG, "msgID: %u", info->messageId);
1313     }
1314     else
1315     {
1316         OIC_LOG(DEBUG, TAG, "info is NULL, cannot output log data");
1317     }
1318 }
1319
1320 void CAErrorHandler(const CAEndpoint_t *endpoint,
1321                     const void *data, uint32_t dataLen,
1322                     CAResult_t result)
1323 {
1324     OIC_LOG(DEBUG, TAG, "CAErrorHandler IN");
1325
1326 #ifndef SINGLE_THREAD
1327     VERIFY_NON_NULL_VOID(endpoint, TAG, "remoteEndpoint");
1328     VERIFY_NON_NULL_VOID(data, TAG, "data");
1329
1330     uint32_t code = CA_NOT_FOUND;
1331     //Do not free remoteEndpoint and data. Currently they will be freed in data thread
1332     //Get PDU data
1333     coap_pdu_t *pdu = (coap_pdu_t *)CAParsePDU((const char *)data, dataLen, &code, endpoint);
1334     if (NULL == pdu)
1335     {
1336         OIC_LOG(ERROR, TAG, "Parse PDU failed");
1337         return;
1338     }
1339
1340     CAData_t *cadata = CAGenerateHandlerData(endpoint, NULL, pdu, CA_ERROR_DATA);
1341     if(!cadata)
1342     {
1343         OIC_LOG(ERROR, TAG, "CAErrorHandler, CAGenerateHandlerData failed!");
1344         coap_delete_pdu(pdu);
1345         return;
1346     }
1347
1348     cadata->errorInfo->result = result;
1349
1350     CAQueueingThreadAddData(&g_receiveThread, cadata, sizeof(CAData_t));
1351     coap_delete_pdu(pdu);
1352 #endif
1353
1354     OIC_LOG(DEBUG, TAG, "CAErrorHandler OUT");
1355     return;
1356 }
1357
1358 static void CASendErrorInfo(const CAEndpoint_t *endpoint, const CAInfo_t *info, CAResult_t result)
1359 {
1360     OIC_LOG(DEBUG, TAG, "CASendErrorInfo IN");
1361 #ifndef SINGLE_THREAD
1362     CAData_t *cadata = (CAData_t *) OICCalloc(1, sizeof(CAData_t));
1363     if (!cadata)
1364     {
1365         OIC_LOG(ERROR, TAG, "cadata memory allocation failed");
1366         return;
1367     }
1368
1369     CAEndpoint_t* ep = CACloneEndpoint(endpoint);
1370     if (!ep)
1371     {
1372         OIC_LOG(ERROR, TAG, "endpoint clone failed");
1373         OICFree(cadata);
1374         return;
1375     }
1376
1377     CAErrorInfo_t *errorInfo = (CAErrorInfo_t *)OICCalloc(1, sizeof (CAErrorInfo_t));
1378     if (!errorInfo)
1379     {
1380         OIC_LOG(ERROR, TAG, "errorInfo memory allocation failed");
1381         OICFree(cadata);
1382         CAFreeEndpoint(ep);
1383         return;
1384     }
1385
1386     CAResult_t res = CACloneInfo(info, &errorInfo->info);
1387     if (CA_STATUS_OK != res)
1388     {
1389         OIC_LOG(ERROR, TAG, "info clone failed");
1390         OICFree(cadata);
1391         OICFree(errorInfo);
1392         CAFreeEndpoint(ep);
1393         return;
1394     }
1395
1396     errorInfo->result = result;
1397     cadata->remoteEndpoint = ep;
1398     cadata->errorInfo = errorInfo;
1399     cadata->dataType = CA_ERROR_DATA;
1400
1401     CAQueueingThreadAddData(&g_receiveThread, cadata, sizeof(CAData_t));
1402 #endif
1403     OIC_LOG(DEBUG, TAG, "CASendErrorInfo OUT");
1404 }