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