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 "cainterfacecontroller.h"
  30 #include "caprotocolmessage.h"
  31 #include "caretransmission.h"
  32 #include "caadapterutils.h"
  33 #include "uqueue.h"
  34 #include "logger.h"
  35 #include "config.h" /* for coap protocol */
  36 #include "cathreadpool.h" /* for thread pool */
  37 #include "caqueueingthread.h"
  38 #include "camutex.h"
  39 #include "oic_malloc.h"
  40 #include "oic_string.h"
  41 #include "canetworkconfigurator.h"
  42
  43 #define TAG PCF("CA")
  44 #define SINGLE_HANDLE
  45
  46 #define MAX_THREAD_POOL_SIZE    20
  47
  48 typedef enum
  49 {
  50     SEND_TYPE_MULTICAST = 0, SEND_TYPE_UNICAST
  51 } CASendDataType_t;
  52
  53 typedef enum
  54 {
  55     CA_REQUEST_DATA = 1,
  56     CA_RESPONSE_DATA = 2,
  57     CA_ERROR_DATA = 3,
  58 } CADataType_t;
  59
  60 typedef struct
  61 {
  62     CASendDataType_t type;
  63     CAEndpoint_t *remoteEndpoint;
  64     CARequestInfo_t *requestInfo;
  65     CAResponseInfo_t *responseInfo;
  66     CAErrorInfo_t *errorInfo;
  67     CAHeaderOption_t *options;
  68     CADataType_t dataType;
  69     uint8_t numOptions;
  70 } CAData_t;
  71
  72 // thread pool handle
  73 static ca_thread_pool_t g_threadPoolHandle = NULL;
  74
  75 // message handler main thread
  76 static CAQueueingThread_t g_sendThread;
  77 static CAQueueingThread_t g_receiveThread;
  78
  79 static CARetransmission_t g_retransmissionContext;
  80
  81 // handler field
  82 static CARequestCallback g_requestHandler = NULL;
  83 static CAResponseCallback g_responseHandler = NULL;
  84 static CAErrorCallback g_errorHandler = NULL;
  85
  86 static void CAErrorHandler(const CAEndpoint_t *endpoint,
  87                            const void *data, uint32_t dataLen,
  88                            CAResult_t result);
  89
  90 static bool CAIsSelectedNetworkAvailable()
  91 {
  92     u_arraylist_t *list = CAGetSelectedNetworkList();
  93     if (!list || list->length == 0)
  94     {
  95         OIC_LOG(ERROR, TAG, "No selected network");
  96         return false;
  97     }
  98
  99     return true;
 100 }
 101
 102 static void CATimeoutCallback(const CAEndpoint_t *endpoint, const void *pdu, uint32_t size)
 103 {
 104     OIC_LOG(DEBUG, TAG, "IN");
 105     VERIFY_NON_NULL_VOID(endpoint, TAG, "endpoint");
 106     VERIFY_NON_NULL_VOID(pdu, TAG, "pdu");
 107
 108     CAEndpoint_t* ep = CACloneEndpoint(endpoint);
 109     if (NULL == ep)
 110     {
 111         OIC_LOG(ERROR, TAG, "clone failed");
 112         return;
 113     }
 114
 115     CAResponseInfo_t* resInfo = (CAResponseInfo_t*)OICCalloc(1, sizeof(CAResponseInfo_t));
 116
 117     if (NULL == resInfo)
 118     {
 119         OIC_LOG(ERROR, TAG, "calloc failed");
 120         CAFreeEndpoint(ep);
 121         return;
 122     }
 123
 124     resInfo->result = CA_RETRANSMIT_TIMEOUT;
 125     resInfo->info.type = CAGetMessageTypeFromPduBinaryData(pdu, size);
 126     resInfo->info.messageId = CAGetMessageIdFromPduBinaryData(pdu, size);
 127     CAResult_t res = CAGetTokenFromPDU((const coap_hdr_t *) pdu, &(resInfo->info));
 128     if (CA_STATUS_OK != res)
 129     {
 130         OIC_LOG(ERROR, TAG, "fail to get Token from retransmission list");
 131         OICFree(resInfo->info.token);
 132         OICFree(resInfo);
 133         CAFreeEndpoint(ep);
 134         return;
 135     }
 136
 137     CAData_t *cadata = (CAData_t *) OICCalloc(1, sizeof(CAData_t));
 138     if (NULL == cadata)
 139     {
 140         OIC_LOG(ERROR, TAG, "memory allocation failed !");
 141         CAFreeEndpoint(ep);
 142         OICFree(resInfo);
 143         return;
 144     }
 145
 146     cadata->type = SEND_TYPE_UNICAST;
 147     cadata->remoteEndpoint = ep;
 148     cadata->requestInfo = NULL;
 149     cadata->responseInfo = resInfo;
 150
 151     CAQueueingThreadAddData(&g_receiveThread, cadata, sizeof(CAData_t));
 152     OIC_LOG(DEBUG, TAG, "OUT");
 153 }
 154
 155 static void CADataDestroyer(void *data, uint32_t size)
 156 {
 157     OIC_LOG(DEBUG, TAG, "IN");
 158     CAData_t *cadata = (CAData_t *) data;
 159
 160     if (NULL == cadata)
 161     {
 162         OIC_LOG(ERROR, TAG, "cadata is NULL");
 163         return;
 164     }
 165
 166     if (NULL != cadata->remoteEndpoint)
 167     {
 168         CAFreeEndpoint(cadata->remoteEndpoint);
 169     }
 170
 171     if (NULL != cadata->requestInfo)
 172     {
 173         CADestroyRequestInfoInternal((CARequestInfo_t *) cadata->requestInfo);
 174     }
 175
 176     if (NULL != cadata->responseInfo)
 177     {
 178         CADestroyResponseInfoInternal((CAResponseInfo_t *) cadata->responseInfo);
 179     }
 180
 181     if (NULL != cadata->errorInfo)
 182     {
 183        CAInfo_t *info = &cadata->errorInfo->info;
 184        OICFree(info->token);
 185        OICFree(info->options);
 186        OICFree(info->payload);
 187        OICFree(info->resourceUri);
 188        OICFree(cadata->errorInfo);
 189     }
 190
 191     OICFree(cadata);
 192     OIC_LOG(DEBUG, TAG, "OUT");
 193 }
 194
 195 static void CAReceiveThreadProcess(void *threadData)
 196 {
 197     OIC_LOG(DEBUG, TAG, "IN");
 198     // Currently not supported
 199     // This will be enabled when RI supports multi threading
 200 #ifndef SINGLE_HANDLE
 201     CAData_t *data = (CAData_t *) threadData;
 202
 203     if (NULL == data)
 204     {
 205         OIC_LOG(ERROR, TAG, "thread data error!!");
 206         return;
 207     }
 208
 209     // parse the data and call the callbacks.
 210     // #1 parse the data
 211     // #2 get endpoint
 212     CAEndpoint_t *rep = (CAEndpoint_t *)(data->remoteEndpoint);
 213
 214     if (NULL == rep)
 215     {
 216         OIC_LOG(ERROR, TAG, "remoteEndpoint error!!");
 217         return;
 218     }
 219
 220     if (data->requestInfo && g_requestHandler)
 221     {
 222         g_requestHandler(rep, data->requestInfo);
 223     }
 224     else if (data->responseInfo && g_responseHandler)
 225     {
 226         g_responseHandler(rep, data->responseInfo);
 227     }
 228     else if (data->errorInfo && g_errorHandler)
 229     {
 230         g_errorHandler(rep, data->errorInfo);
 231     }
 232
 233 #endif /* SINGLE_HANDLE */
 234     OIC_LOG(DEBUG, TAG, "OUT");
 235 }
 236
 237 static void CASendThreadProcess(void *threadData)
 238 {
 239     OIC_LOG(DEBUG, TAG, "IN");
 240     CAData_t *data = (CAData_t *) threadData;
 241
 242     VERIFY_NON_NULL_VOID(data, TAG, "data");
 243     VERIFY_NON_NULL_VOID(data->remoteEndpoint, TAG, "remoteEndpoint");
 244
 245     CAResult_t res = CA_STATUS_FAILED;
 246
 247     CASendDataType_t type = data->type;
 248
 249     coap_pdu_t *pdu = NULL;
 250
 251     if (SEND_TYPE_UNICAST == type)
 252     {
 253
 254         if (NULL != data->requestInfo)
 255         {
 256             OIC_LOG(DEBUG, TAG, "requestInfo is available..");
 257
 258             pdu = CAGeneratePDU(data->requestInfo->method, &data->requestInfo->info);
 259         }
 260         else if (NULL != data->responseInfo)
 261         {
 262             OIC_LOG(DEBUG, TAG, "responseInfo is available..");
 263
 264             pdu = CAGeneratePDU(data->responseInfo->result, &data->responseInfo->info);
 265         }
 266         else
 267         {
 268             OIC_LOG(DEBUG, TAG, "request info, response info is empty");
 269         }
 270
 271         // interface controller function call.
 272         if (NULL != pdu)
 273         {
 274             CALogPDUInfo(pdu);
 275
 276             res = CASendUnicastData(data->remoteEndpoint, pdu->hdr, pdu->length);
 277             if (CA_STATUS_OK != res)
 278             {
 279                 OIC_LOG_V(ERROR, TAG, "send failed:%d", res);
 280                 coap_delete_pdu(pdu);
 281                 return;
 282             }
 283             // for retransmission
 284             res = CARetransmissionSentData(&g_retransmissionContext, data->remoteEndpoint, pdu->hdr,
 285                                            pdu->length);
 286             if (CA_STATUS_OK != res)
 287             {
 288                 OIC_LOG_V(INFO, TAG, "retransmission will be not working: %d", res);
 289                 coap_delete_pdu(pdu);
 290                 return;
 291             }
 292
 293             coap_delete_pdu(pdu);
 294         }
 295     }
 296     else if (SEND_TYPE_MULTICAST == type)
 297     {
 298         OIC_LOG(DEBUG, TAG, "both requestInfo & responseInfo is not available");
 299
 300         CAInfo_t *info = &data->requestInfo->info;
 301
 302         info->options = data->options;
 303         info->numOptions = data->numOptions;
 304
 305         pdu = CAGeneratePDU(CA_GET, info);
 306         if (NULL != pdu)
 307         {
 308             CALogPDUInfo(pdu);
 309
 310             res = CASendMulticastData(data->remoteEndpoint, pdu->hdr, pdu->length);
 311             if (CA_STATUS_OK != res)
 312             {
 313                 OIC_LOG_V(ERROR, TAG, "send failed:%d", res);
 314                 coap_delete_pdu(pdu);
 315                 return;
 316             }
 317
 318             coap_delete_pdu(pdu);
 319         }
 320     }
 321
 322     OIC_LOG(DEBUG, TAG, "OUT");
 323 }
 324
 325 static void CAReceivedPacketCallback(const CAEndpoint_t *endpoint, void *data, uint32_t dataLen)
 326 {
 327     OIC_LOG(DEBUG, TAG, "IN");
 328     VERIFY_NON_NULL_VOID(endpoint, TAG, "endpoint");
 329     VERIFY_NON_NULL_VOID(data, TAG, "data");
 330
 331     uint32_t code = CA_NOT_FOUND;
 332     coap_pdu_t *pdu = (coap_pdu_t *) CAParsePDU((const char *) data, dataLen, &code);
 333     OICFree(data);
 334
 335     if (NULL == pdu)
 336     {
 337         OIC_LOG(ERROR, TAG, "Parse PDU failed");
 338         return;
 339     }
 340
 341     if (CA_GET == code || CA_POST == code || CA_PUT == code || CA_DELETE == code)
 342     {
 343         CARequestInfo_t *ReqInfo = (CARequestInfo_t *) OICCalloc(1, sizeof(CARequestInfo_t));
 344         if (NULL == ReqInfo)
 345         {
 346             OIC_LOG(ERROR, TAG, "CAReceivedPacketCallback, Memory allocation failed!");
 347             coap_delete_pdu(pdu);
 348             return;
 349         }
 350
 351         CAResult_t res = CAGetRequestInfoFromPDU(pdu, ReqInfo);
 352         if (CA_STATUS_OK != res)
 353         {
 354             OIC_LOG_V(ERROR, TAG, "CAGetRequestInfoFromPDU failed : %d", res);
 355             OICFree(ReqInfo);
 356             coap_delete_pdu(pdu);
 357             return;
 358         }
 359
 360         if (NULL != ReqInfo->info.options)
 361         {
 362             uint32_t i;
 363             for (i = 0; i < ReqInfo->info.numOptions; i++)
 364             {
 365                 OIC_LOG_V(DEBUG, TAG, "Request- optionID: %d", ReqInfo->info.options[i].optionID);
 366
 367                 OIC_LOG_V(DEBUG, TAG, "Request- list: %s", ReqInfo->info.options[i].optionData);
 368             }
 369         }
 370
 371         OIC_LOG_V(DEBUG, TAG, "Request- code: %d", ReqInfo->method);
 372         if (NULL != ReqInfo->info.token)
 373         {
 374             OIC_LOG(DEBUG, TAG, "Request- token:");
 375             OIC_LOG_BUFFER(DEBUG, TAG, (const uint8_t *) ReqInfo->info.token,
 376                            ReqInfo->info.tokenLength);
 377         }
 378
 379         OIC_LOG_V(DEBUG, TAG, "Request- msgID : %d", ReqInfo->info.messageId);
 380         // store the data at queue.
 381         CAData_t *cadata = NULL;
 382         cadata = (CAData_t *) OICCalloc(1, sizeof(CAData_t));
 383         if (NULL == cadata)
 384         {
 385             OIC_LOG(ERROR, TAG, "CAReceivedPacketCallback, Memory allocation failed !");
 386             CADestroyRequestInfoInternal(ReqInfo);
 387             coap_delete_pdu(pdu);
 388             return;
 389         }
 390
 391         cadata->type = SEND_TYPE_UNICAST;
 392         cadata->remoteEndpoint = CACloneEndpoint(endpoint);
 393         cadata->requestInfo = ReqInfo;
 394         cadata->responseInfo = NULL;
 395         CAQueueingThreadAddData(&g_receiveThread, cadata, sizeof(CAData_t));
 396     }
 397     else
 398     {
 399         CAResponseInfo_t *ResInfo = (CAResponseInfo_t *) OICCalloc(1, sizeof(CAResponseInfo_t));
 400         if (NULL == ResInfo)
 401         {
 402             OIC_LOG(ERROR, TAG, "CAReceivedPacketCallback, Memory allocation failed!");
 403             coap_delete_pdu(pdu);
 404             return;
 405         }
 406
 407         CAResult_t res = CAGetResponseInfoFromPDU(pdu, ResInfo);
 408         if (CA_STATUS_OK != res)
 409         {
 410             OIC_LOG_V(ERROR, TAG, "CAGetResponseInfoFromPDU failed : %d", res);
 411             OICFree(ResInfo);
 412             coap_delete_pdu(pdu);
 413             return;
 414         }
 415
 416         if (NULL != ResInfo->info.options)
 417         {
 418             uint32_t i;
 419             for (i = 0; i < ResInfo->info.numOptions; i++)
 420             {
 421                 OIC_LOG_V(DEBUG, TAG, "Response- optionID: %d", ResInfo->info.options[i].optionID);
 422
 423                 OIC_LOG_V(DEBUG, TAG, "Response- list: %s", ResInfo->info.options[i].optionData);
 424             }
 425         }
 426
 427         if (NULL != ResInfo->info.payload)
 428         {
 429             OIC_LOG_V(DEBUG, TAG, "Response- payload: %p(%u) from %s", ResInfo->info.payload,
 430                     ResInfo->info.payloadSize, endpoint->addr);
 431         }
 432         OIC_LOG_V(DEBUG, TAG, "Response- code: %d", ResInfo->result);
 433         if (NULL != ResInfo->info.token)
 434         {
 435             OIC_LOG(DEBUG, TAG, "Response- token:");
 436             OIC_LOG_BUFFER(DEBUG, TAG, (const uint8_t *) ResInfo->info.token,
 437                            ResInfo->info.tokenLength);
 438         }
 439         OIC_LOG_V(DEBUG, TAG, "Response- msgID: %d", ResInfo->info.messageId);
 440
 441         // store the data at queue.
 442         CAData_t *cadata = (CAData_t *) OICCalloc(1, sizeof(CAData_t));
 443         if (NULL == cadata)
 444         {
 445             OIC_LOG(ERROR, TAG, "CAReceivedPacketCallback, Memory allocation failed !");
 446             CADestroyResponseInfoInternal(ResInfo);
 447             coap_delete_pdu(pdu);
 448             return;
 449         }
 450
 451         cadata->type = SEND_TYPE_UNICAST;
 452         cadata->remoteEndpoint = CACloneEndpoint(endpoint);
 453         cadata->requestInfo = NULL;
 454
 455         // for retransmission
 456         void *retransmissionPdu = NULL;
 457         CARetransmissionReceivedData(&g_retransmissionContext, endpoint, pdu->hdr, pdu->length,
 458                                      &retransmissionPdu);
 459
 460         // get token from saved data in retransmission list
 461         if (retransmissionPdu && CA_EMPTY == code)
 462         {
 463             CAResult_t res = CAGetTokenFromPDU((const coap_hdr_t *)retransmissionPdu,
 464                                                &(ResInfo->info));
 465             if (CA_STATUS_OK != res)
 466             {
 467                 OIC_LOG(ERROR, TAG, "fail to get Token from retransmission list");
 468                 OICFree(ResInfo->info.token);
 469             }
 470         }
 471         OICFree(retransmissionPdu);
 472         cadata->responseInfo = ResInfo;
 473
 474         CAQueueingThreadAddData(&g_receiveThread, cadata, sizeof(CAData_t));
 475     }
 476
 477     if (pdu)
 478     {
 479         coap_delete_pdu(pdu);
 480     }
 481     OIC_LOG(DEBUG, TAG, "OUT");
 482 }
 483
 484 static void CANetworkChangedCallback(const CAEndpoint_t *info, CANetworkStatus_t status)
 485 {
 486     OIC_LOG(DEBUG, TAG, "IN");
 487
 488     OIC_LOG(DEBUG, TAG, "OUT");
 489 }
 490
 491 void CAHandleRequestResponseCallbacks()
 492 {
 493
 494 #ifdef SINGLE_HANDLE
 495     // parse the data and call the callbacks.
 496     // #1 parse the data
 497     // #2 get endpoint
 498
 499     ca_mutex_lock(g_receiveThread.threadMutex);
 500
 501     u_queue_message_t *item = u_queue_get_element(g_receiveThread.dataQueue);
 502
 503     ca_mutex_unlock(g_receiveThread.threadMutex);
 504
 505     if (NULL == item)
 506     {
 507         return;
 508     }
 509
 510     // get values
 511     void *msg = item->msg;
 512
 513     if (NULL == msg)
 514     {
 515         return;
 516     }
 517
 518     // get endpoint
 519     CAData_t *td = (CAData_t *) msg;
 520
 521     if (td->requestInfo && g_requestHandler)
 522     {
 523         OIC_LOG_V(DEBUG, TAG, "request callback : %d", td->requestInfo->info.numOptions);
 524         g_requestHandler(td->remoteEndpoint, td->requestInfo);
 525     }
 526     else if (td->responseInfo && g_responseHandler)
 527     {
 528         OIC_LOG_V(DEBUG, TAG, "response callback : %d", td->responseInfo->info.numOptions);
 529         g_responseHandler(td->remoteEndpoint, td->responseInfo);
 530     }
 531     else if (td->errorInfo && g_errorHandler)
 532     {
 533         OIC_LOG_V(DEBUG, TAG, "error callback error: %d", td->errorInfo->result);
 534         g_errorHandler(td->remoteEndpoint, td->errorInfo);
 535     }
 536
 537     CADataDestroyer(msg, sizeof(CAData_t));
 538     OICFree(item);
 539
 540 #endif
 541     OIC_LOG(DEBUG, TAG, "CAHandleRequestResponseCallbacks OUT");
 542 }
 543
 544 CAResult_t CADetachRequestMessage(const CAEndpoint_t *object, const CARequestInfo_t *request)
 545 {
 546     OIC_LOG(DEBUG, TAG, "IN");
 547
 548     VERIFY_NON_NULL(object, TAG, "object");
 549     VERIFY_NON_NULL(request, TAG, "request");
 550
 551     if (false == CAIsSelectedNetworkAvailable())
 552     {
 553         return CA_STATUS_FAILED;
 554     }
 555
 556     CAEndpoint_t *remoteEndpoint = NULL;
 557     CARequestInfo_t *requestInfo = NULL;
 558     CAData_t *data = (CAData_t *) OICCalloc(1, sizeof(CAData_t));
 559     CA_MEMORY_ALLOC_CHECK(data);
 560
 561     // clone remote endpoint
 562     remoteEndpoint = CACloneEndpoint(object);
 563     CA_MEMORY_ALLOC_CHECK(remoteEndpoint);
 564
 565     // clone request info
 566     requestInfo = CACloneRequestInfo(request);
 567     CA_MEMORY_ALLOC_CHECK(requestInfo);
 568
 569     // save data
 570     data->type = request->isMulticast ? SEND_TYPE_MULTICAST : SEND_TYPE_UNICAST;
 571     data->remoteEndpoint = remoteEndpoint;
 572     data->requestInfo = requestInfo;
 573     data->responseInfo = NULL;
 574     data->options = NULL;
 575     data->numOptions = 0;
 576     if (NULL != requestInfo->info.options && 0 < requestInfo->info.numOptions)
 577     {
 578         uint8_t numOptions = requestInfo->info.numOptions;
 579         // copy data
 580         CAHeaderOption_t *headerOption = (CAHeaderOption_t *) OICMalloc(sizeof(CAHeaderOption_t)
 581                                                                         * numOptions);
 582         CA_MEMORY_ALLOC_CHECK(headerOption);
 583
 584         memcpy(headerOption, requestInfo->info.options, sizeof(CAHeaderOption_t) * numOptions);
 585
 586         data->options = headerOption;
 587         data->numOptions = numOptions;
 588     }
 589
 590     // add thread
 591     CAQueueingThreadAddData(&g_sendThread, data, sizeof(CAData_t));
 592     OIC_LOG(DEBUG, TAG, "OUT");
 593     return CA_STATUS_OK;
 594
 595 // memory error label.
 596 memory_error_exit:
 597     CAFreeEndpoint(remoteEndpoint);
 598     CADestroyRequestInfoInternal(requestInfo);
 599
 600     OICFree(data);
 601     OIC_LOG(DEBUG, TAG, "OUT");
 602     return CA_MEMORY_ALLOC_FAILED;
 603 }
 604
 605 CAResult_t CADetachResponseMessage(const CAEndpoint_t *object,
 606                                    const CAResponseInfo_t *response)
 607 {
 608     OIC_LOG(DEBUG, TAG, "IN");
 609     VERIFY_NON_NULL(object, TAG, "object");
 610     VERIFY_NON_NULL(response, TAG, "response");
 611
 612     if (false == CAIsSelectedNetworkAvailable())
 613     {
 614         return CA_STATUS_FAILED;
 615     }
 616
 617     CAEndpoint_t *remoteEndpoint = NULL;
 618     CAResponseInfo_t *responseInfo = NULL;
 619
 620     // allocate & initialize
 621     CAData_t *data = (CAData_t *) OICCalloc(1, sizeof(CAData_t));
 622     CA_MEMORY_ALLOC_CHECK(data);
 623
 624     // clone remote endpoint
 625     remoteEndpoint = CACloneEndpoint(object);
 626     CA_MEMORY_ALLOC_CHECK(remoteEndpoint);
 627
 628     // clone response info
 629     responseInfo = CACloneResponseInfo(response);
 630     CA_MEMORY_ALLOC_CHECK(responseInfo);
 631
 632     // save data
 633     data->type = SEND_TYPE_UNICAST;
 634     data->remoteEndpoint = remoteEndpoint;
 635     data->requestInfo = NULL;
 636     data->responseInfo = responseInfo;
 637     data->options = NULL;
 638     data->numOptions = 0;
 639     if (NULL != responseInfo->info.options && 0 < responseInfo->info.numOptions)
 640     {
 641         uint8_t numOptions = responseInfo->info.numOptions;
 642         // copy data
 643         CAHeaderOption_t *headerOption = (CAHeaderOption_t *) OICMalloc(sizeof(CAHeaderOption_t)
 644                                                                         * numOptions);
 645         CA_MEMORY_ALLOC_CHECK(headerOption);
 646
 647         memcpy(headerOption, responseInfo->info.options, sizeof(CAHeaderOption_t) * numOptions);
 648
 649         data->options = headerOption;
 650         data->numOptions = numOptions;
 651     }
 652
 653     // add thread
 654     CAQueueingThreadAddData(&g_sendThread, data, sizeof(CAData_t));
 655
 656     OIC_LOG(DEBUG, TAG, "OUT");
 657     return CA_STATUS_OK;
 658
 659 // memory error label.
 660 memory_error_exit:
 661     CAFreeEndpoint(remoteEndpoint);
 662     CADestroyResponseInfoInternal(responseInfo);
 663     OICFree(data);
 664     OIC_LOG(DEBUG, TAG, "OUT");
 665
 666     return CA_MEMORY_ALLOC_FAILED;
 667 }
 668
 669 CAResult_t CADetachMessageResourceUri(const CAURI_t resourceUri, const CAToken_t token,
 670                                       uint8_t tokenLength, const CAHeaderOption_t *options,
 671                                       uint8_t numOptions)
 672 {
 673     return CA_NOT_SUPPORTED;
 674 }
 675
 676 void CASetInterfaceCallbacks(CARequestCallback ReqHandler, CAResponseCallback RespHandler,
 677                              CAErrorCallback errroHandler)
 678 {
 679     OIC_LOG(DEBUG, TAG, "IN");
 680     g_requestHandler = ReqHandler;
 681     g_responseHandler = RespHandler;
 682     g_errorHandler = errroHandler;
 683     OIC_LOG(DEBUG, TAG, "OUT");
 684 }
 685
 686 CAResult_t CAInitializeMessageHandler()
 687 {
 688     OIC_LOG(DEBUG, TAG, "IN");
 689     CASetPacketReceivedCallback(CAReceivedPacketCallback);
 690
 691     CASetNetworkChangeCallback(CANetworkChangedCallback);
 692     CASetErrorHandleCallback(CAErrorHandler);
 693
 694     // create thread pool
 695     CAResult_t res = ca_thread_pool_init(MAX_THREAD_POOL_SIZE, &g_threadPoolHandle);
 696
 697     if (res != CA_STATUS_OK)
 698     {
 699         OIC_LOG(ERROR, TAG, "thread pool initialize error.");
 700         return res;
 701     }
 702
 703     // send thread initialize
 704     if (CA_STATUS_OK != CAQueueingThreadInitialize(&g_sendThread, g_threadPoolHandle,
 705                                                    CASendThreadProcess, CADataDestroyer))
 706     {
 707         OIC_LOG(ERROR, TAG, "Failed to Initialize send queue thread");
 708         return CA_STATUS_FAILED;
 709     }
 710
 711     // start send thread
 712     res = CAQueueingThreadStart(&g_sendThread);
 713
 714     if (res != CA_STATUS_OK)
 715     {
 716         OIC_LOG(ERROR, TAG, "thread start error(send thread).");
 717         ca_thread_pool_free(g_threadPoolHandle);
 718         g_threadPoolHandle = NULL;
 719         return res;
 720     }
 721
 722     // receive thread initialize
 723     if (CA_STATUS_OK != CAQueueingThreadInitialize(&g_receiveThread, g_threadPoolHandle,
 724                                                    CAReceiveThreadProcess, CADataDestroyer))
 725     {
 726         OIC_LOG(ERROR, TAG, "Failed to Initialize receive queue thread");
 727         return CA_STATUS_FAILED;
 728     }
 729
 730 #ifndef SINGLE_HANDLE // This will be enabled when RI supports multi threading
 731     // start receive thread
 732     res = CAQueueingThreadStart(&gReceiveThread);
 733
 734     if (res != CA_STATUS_OK)
 735     {
 736         OIC_LOG(ERROR, TAG, "thread start error(receive thread).");
 737         return res;
 738     }
 739 #endif
 740
 741     // retransmission initialize
 742     CARetransmissionInitialize(&g_retransmissionContext, g_threadPoolHandle, CASendUnicastData,
 743                                CATimeoutCallback, NULL);
 744
 745     // start retransmission
 746     res = CARetransmissionStart(&g_retransmissionContext);
 747
 748     if (res != CA_STATUS_OK)
 749     {
 750         OIC_LOG(ERROR, TAG, "thread start error(retransmission thread).");
 751         return res;
 752     }
 753
 754     // initialize interface adapters by controller
 755     CAInitializeAdapters(g_threadPoolHandle);
 756     OIC_LOG(DEBUG, TAG, "OUT");
 757     return CA_STATUS_OK;
 758 }
 759
 760 void CATerminateMessageHandler()
 761 {
 762     OIC_LOG(DEBUG, TAG, "IN");
 763     CATransportAdapter_t connType;
 764     u_arraylist_t *list = CAGetSelectedNetworkList();
 765     uint32_t length = u_arraylist_length(list);
 766
 767     uint32_t i = 0;
 768     for (i = 0; i < length; i++)
 769     {
 770         void* ptrType = u_arraylist_get(list, i);
 771
 772         if (NULL == ptrType)
 773         {
 774             continue;
 775         }
 776
 777         connType = *(CATransportAdapter_t *)ptrType;
 778         CAStopAdapter(connType);
 779     }
 780
 781     // stop retransmission
 782     if (NULL != g_retransmissionContext.threadMutex)
 783     {
 784         CARetransmissionStop(&g_retransmissionContext);
 785     }
 786
 787     // stop thread
 788     // delete thread data
 789     if (NULL != g_sendThread.threadMutex)
 790     {
 791         CAQueueingThreadStop(&g_sendThread);
 792     }
 793
 794     // stop thread
 795     // delete thread data
 796     if (NULL != g_receiveThread.threadMutex)
 797     {
 798 #ifndef SINGLE_HANDLE // This will be enabled when RI supports multi threading
 799         CAQueueingThreadStop(&gReceiveThread);
 800 #endif
 801     }
 802
 803     // destroy thread pool
 804     if (NULL != g_threadPoolHandle)
 805     {
 806         ca_thread_pool_free(g_threadPoolHandle);
 807         g_threadPoolHandle = NULL;
 808     }
 809
 810     CARetransmissionDestroy(&g_retransmissionContext);
 811     CAQueueingThreadDestroy(&g_sendThread);
 812     CAQueueingThreadDestroy(&g_receiveThread);
 813
 814     // terminate interface adapters by controller
 815     CATerminateAdapters();
 816
 817     OIC_LOG(DEBUG, TAG, "OUT");
 818 }
 819
 820 void CALogPDUInfo(coap_pdu_t *pdu)
 821 {
 822     VERIFY_NON_NULL_VOID(pdu, TAG, "pdu");
 823
 824     OIC_LOG_V(DEBUG, TAG, "PDU Maker - payload : %s", pdu->data);
 825
 826     OIC_LOG_V(DEBUG, TAG, "PDU Maker - type : %d", pdu->hdr->type);
 827
 828     OIC_LOG_V(DEBUG, TAG, "PDU Maker - code : %d", pdu->hdr->code);
 829
 830     OIC_LOG_V(DEBUG, TAG, "PDU Maker - id : %d", ntohs(pdu->hdr->id));
 831
 832     OIC_LOG(DEBUG, TAG, "PDU Maker - token :");
 833
 834     OIC_LOG_BUFFER(DEBUG, TAG, pdu->hdr->token, pdu->hdr->token_length);
 835 }
 836
 837 void CAErrorHandler(const CAEndpoint_t *endpoint,
 838                     const void *data, uint32_t dataLen,
 839                     CAResult_t result)
 840 {
 841     OIC_LOG(DEBUG, TAG, "IN");
 842     VERIFY_NON_NULL_VOID(endpoint, TAG, "remoteEndpoint");
 843     VERIFY_NON_NULL_VOID(data, TAG, "data");
 844
 845     uint32_t code = CA_NOT_FOUND;
 846     //Do not free remoteEndpoint and data. Currently they will be freed in data thread
 847     //Get PDU data
 848     coap_pdu_t *pdu = (coap_pdu_t *)CAParsePDU((const char *)data, dataLen, &code);
 849     if (NULL == pdu)
 850     {
 851         OIC_LOG(ERROR, TAG, "Parse PDU failed");
 852         return;
 853     }
 854
 855     CAErrorInfo_t *errorInfo = (CAErrorInfo_t *)OICCalloc(1, sizeof (CAErrorInfo_t));
 856     if (NULL == errorInfo)
 857     {
 858         OIC_LOG(ERROR, TAG, "CAErrorHandler, Memory allocation failed!");
 859         coap_delete_pdu(pdu);
 860         return;
 861     }
 862
 863     CAResult_t res = CAGetErrorInfoFromPDU(pdu, errorInfo);
 864     if (CA_STATUS_OK != res)
 865     {
 866         OIC_LOG_V(ERROR, TAG, "CAGetErrorInfoFromPDU failed : %d", res);
 867         OICFree(errorInfo);
 868         coap_delete_pdu(pdu);
 869        return;
 870     }
 871
 872     errorInfo->result = result;
 873     OIC_LOG_V(DEBUG, TAG, "error : %d", result);
 874     if (NULL != errorInfo->info.payload)
 875     {
 876         OIC_LOG_V(DEBUG, TAG, "error, payload: %s", errorInfo->info.payload);
 877     }
 878
 879     OIC_LOG(DEBUG, TAG, "error, token");
 880     OIC_LOG_BUFFER(DEBUG, TAG, (const uint8_t *) errorInfo->info.token,
 881                    errorInfo->info.tokenLength);
 882     OIC_LOG_V(DEBUG, TAG, "CAErrorHandler, msgID : %d", errorInfo->info.messageId);
 883
 884     CAEndpoint_t *rep = NULL;
 885     rep = CACloneEndpoint(endpoint);
 886     if (!rep)
 887     {
 888         OIC_LOG(ERROR, TAG, "CAErrorHandler, CloneEndpoint Failed");
 889         OICFree(errorInfo);
 890         coap_delete_pdu(pdu);
 891         return;
 892     }
 893
 894     // store the data at queue.
 895     CAData_t *cadata = NULL;
 896     cadata = (CAData_t *) OICCalloc(1, sizeof(CAData_t));
 897     if (NULL == cadata)
 898     {
 899         OIC_LOG(ERROR, TAG, "CAReceivedPacketCallback, Memory allocation failed !");
 900         CAFreeEndpoint(rep);
 901         OICFree(errorInfo);
 902         coap_delete_pdu(pdu);
 903         return;
 904     }
 905
 906     cadata->remoteEndpoint = rep;
 907     cadata->requestInfo = NULL;
 908     cadata->responseInfo = NULL;
 909     cadata->errorInfo = errorInfo;
 910     cadata->dataType = CA_ERROR_DATA;
 911
 912     CAQueueingThreadAddData(&g_receiveThread, cadata, sizeof(CAData_t));
 913     coap_delete_pdu(pdu);
 914
 915     return;
 916 }