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         CAAdapterFreeEndpoint(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         CAAdapterFreeEndpoint(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         CAAdapterFreeEndpoint(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         CADestroyEndpointInternal(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(cadata->errorInfo);
 188     }
 189
 190     OICFree(cadata);
 191     OIC_LOG(DEBUG, TAG, "OUT");
 192 }
 193
 194 static void CAReceiveThreadProcess(void *threadData)
 195 {
 196     OIC_LOG(DEBUG, TAG, "IN");
 197     // Currently not supported
 198     // This will be enabled when RI supports multi threading
 199 #ifndef SINGLE_HANDLE
 200     CAData_t *data = (CAData_t *) threadData;
 201
 202     if (NULL == data)
 203     {
 204         OIC_LOG(ERROR, TAG, "thread data error!!");
 205         return;
 206     }
 207
 208     // parse the data and call the callbacks.
 209     // #1 parse the data
 210     // #2 get endpoint
 211     CAEndpoint_t *rep = (CAEndpoint_t *)(data->remoteEndpoint);
 212
 213     if (NULL == rep)
 214     {
 215         OIC_LOG(ERROR, TAG, "remoteEndpoint error!!");
 216         return;
 217     }
 218
 219     if (data->requestInfo && g_requestHandler)
 220     {
 221         g_requestHandler(rep, data->requestInfo);
 222     }
 223     else if (data->responseInfo && g_responseHandler)
 224     {
 225         g_responseHandler(rep, data->responseInfo);
 226     }
 227     else if (data->errorInfo && g_errorHandler)
 228     {
 229         g_errorHandler(rep, data->errorInfo);
 230     }
 231
 232 #endif /* SINGLE_HANDLE */
 233     OIC_LOG(DEBUG, TAG, "OUT");
 234 }
 235
 236 static void CASendThreadProcess(void *threadData)
 237 {
 238     OIC_LOG(DEBUG, TAG, "IN");
 239     CAData_t *data = (CAData_t *) threadData;
 240
 241     VERIFY_NON_NULL_VOID(data, TAG, "data");
 242     VERIFY_NON_NULL_VOID(data->remoteEndpoint, TAG, "remoteEndpoint");
 243
 244     CAResult_t res = CA_STATUS_FAILED;
 245
 246     CASendDataType_t type = data->type;
 247
 248     coap_pdu_t *pdu = NULL;
 249
 250     if (SEND_TYPE_UNICAST == type)
 251     {
 252
 253         if (NULL != data->requestInfo)
 254         {
 255             OIC_LOG(DEBUG, TAG, "requestInfo is available..");
 256
 257             pdu = CAGeneratePDU(data->requestInfo->method, &data->requestInfo->info);
 258         }
 259         else if (NULL != data->responseInfo)
 260         {
 261             OIC_LOG(DEBUG, TAG, "responseInfo is available..");
 262
 263             pdu = CAGeneratePDU(data->responseInfo->result, &data->responseInfo->info);
 264         }
 265         else
 266         {
 267             OIC_LOG(DEBUG, TAG, "request info, response info is empty");
 268         }
 269
 270         // interface controller function call.
 271         if (NULL != pdu)
 272         {
 273             CALogPDUInfo(pdu);
 274
 275             res = CASendUnicastData(data->remoteEndpoint, pdu->hdr, pdu->length);
 276             if (CA_STATUS_OK != res)
 277             {
 278                 OIC_LOG_V(ERROR, TAG, "send failed:%d", res);
 279                 CAErrorHandler(data->remoteEndpoint, pdu->hdr, pdu->length, 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                 CAErrorHandler(data->remoteEndpoint, pdu->hdr, pdu->length, res);
 315                 coap_delete_pdu(pdu);
 316                 return;
 317             }
 318
 319             coap_delete_pdu(pdu);
 320         }
 321     }
 322
 323     OIC_LOG(DEBUG, TAG, "OUT");
 324 }
 325
 326 static void CAReceivedPacketCallback(const CAEndpoint_t *endpoint, void *data, uint32_t dataLen)
 327 {
 328     OIC_LOG(DEBUG, TAG, "IN");
 329     VERIFY_NON_NULL_VOID(endpoint, TAG, "endpoint");
 330     VERIFY_NON_NULL_VOID(data, TAG, "data");
 331
 332     uint32_t code = CA_NOT_FOUND;
 333     coap_pdu_t *pdu = (coap_pdu_t *) CAParsePDU((const char *) data, dataLen, &code);
 334     OICFree(data);
 335
 336     if (NULL == pdu)
 337     {
 338         OIC_LOG(ERROR, TAG, "Parse PDU failed");
 339         return;
 340     }
 341
 342     if (CA_GET == code || CA_POST == code || CA_PUT == code || CA_DELETE == code)
 343     {
 344         CARequestInfo_t *ReqInfo = (CARequestInfo_t *) OICCalloc(1, sizeof(CARequestInfo_t));
 345         if (NULL == ReqInfo)
 346         {
 347             OIC_LOG(ERROR, TAG, "CAReceivedPacketCallback, Memory allocation failed!");
 348             coap_delete_pdu(pdu);
 349             return;
 350         }
 351
 352         CAResult_t res = CAGetRequestInfoFromPDU(pdu, ReqInfo);
 353         if (CA_STATUS_OK != res)
 354         {
 355             OIC_LOG_V(ERROR, TAG, "CAGetRequestInfoFromPDU failed : %d", res);
 356             OICFree(ReqInfo);
 357             coap_delete_pdu(pdu);
 358             return;
 359         }
 360
 361         if (NULL != ReqInfo->info.options)
 362         {
 363             uint32_t i;
 364             for (i = 0; i < ReqInfo->info.numOptions; i++)
 365             {
 366                 OIC_LOG_V(DEBUG, TAG, "Request- optionID: %d", ReqInfo->info.options[i].optionID);
 367
 368                 OIC_LOG_V(DEBUG, TAG, "Request- list: %s", ReqInfo->info.options[i].optionData);
 369             }
 370         }
 371
 372         if (NULL != ReqInfo->info.payload)
 373         {
 374             OIC_LOG_V(DEBUG, TAG, "Request- payload: %s", ReqInfo->info.payload);
 375         }
 376         OIC_LOG_V(DEBUG, TAG, "Request- code: %d", ReqInfo->method);
 377         if (NULL != ReqInfo->info.token)
 378         {
 379             OIC_LOG(DEBUG, TAG, "Request- token:");
 380             OIC_LOG_BUFFER(DEBUG, TAG, (const uint8_t *) ReqInfo->info.token,
 381                            ReqInfo->info.tokenLength);
 382         }
 383         OIC_LOG_V(DEBUG, TAG, "Request- msgID : %d", ReqInfo->info.messageId);
 384         // store the data at queue.
 385         CAData_t *cadata = NULL;
 386         cadata = (CAData_t *) OICCalloc(1, sizeof(CAData_t));
 387         if (NULL == cadata)
 388         {
 389             OIC_LOG(ERROR, TAG, "CAReceivedPacketCallback, Memory allocation failed !");
 390             CADestroyRequestInfoInternal(ReqInfo);
 391             coap_delete_pdu(pdu);
 392             return;
 393         }
 394
 395         cadata->type = SEND_TYPE_UNICAST;
 396         cadata->remoteEndpoint = CAAdapterCloneEndpoint(endpoint);
 397         cadata->requestInfo = ReqInfo;
 398         cadata->responseInfo = NULL;
 399         CAQueueingThreadAddData(&g_receiveThread, cadata, sizeof(CAData_t));
 400     }
 401     else
 402     {
 403         CAResponseInfo_t *ResInfo = (CAResponseInfo_t *) OICCalloc(1, sizeof(CAResponseInfo_t));
 404         if (NULL == ResInfo)
 405         {
 406             OIC_LOG(ERROR, TAG, "CAReceivedPacketCallback, Memory allocation failed!");
 407             coap_delete_pdu(pdu);
 408             return;
 409         }
 410
 411         CAResult_t res = CAGetResponseInfoFromPDU(pdu, ResInfo);
 412         if (CA_STATUS_OK != res)
 413         {
 414             OIC_LOG_V(ERROR, TAG, "CAGetResponseInfoFromPDU failed : %d", res);
 415             OICFree(ResInfo);
 416             coap_delete_pdu(pdu);
 417             return;
 418         }
 419
 420         if (NULL != ResInfo->info.options)
 421         {
 422             uint32_t i;
 423             for (i = 0; i < ResInfo->info.numOptions; i++)
 424             {
 425                 OIC_LOG_V(DEBUG, TAG, "Response- optionID: %d", ResInfo->info.options[i].optionID);
 426
 427                 OIC_LOG_V(DEBUG, TAG, "Response- list: %s", ResInfo->info.options[i].optionData);
 428             }
 429         }
 430
 431         if (NULL != ResInfo->info.payload)
 432         {
 433             OIC_LOG_V(DEBUG, TAG, "Response- payload: %s", ResInfo->info.payload);
 434         }
 435         OIC_LOG_V(DEBUG, TAG, "Response- code: %d", ResInfo->result);
 436         if (NULL != ResInfo->info.token)
 437         {
 438             OIC_LOG(DEBUG, TAG, "Response- token:");
 439             OIC_LOG_BUFFER(DEBUG, TAG, (const uint8_t *) ResInfo->info.token,
 440                            ResInfo->info.tokenLength);
 441         }
 442         OIC_LOG_V(DEBUG, TAG, "Response- msgID: %d", ResInfo->info.messageId);
 443
 444         // store the data at queue.
 445         CAData_t *cadata = (CAData_t *) OICCalloc(1, sizeof(CAData_t));
 446         if (NULL == cadata)
 447         {
 448             OIC_LOG(ERROR, TAG, "CAReceivedPacketCallback, Memory allocation failed !");
 449             CADestroyResponseInfoInternal(ResInfo);
 450             coap_delete_pdu(pdu);
 451             return;
 452         }
 453
 454         cadata->type = SEND_TYPE_UNICAST;
 455         cadata->remoteEndpoint = CAAdapterCloneEndpoint(endpoint);
 456         cadata->requestInfo = NULL;
 457
 458         // for retransmission
 459         void *retransmissionPdu = NULL;
 460         CARetransmissionReceivedData(&g_retransmissionContext, endpoint, pdu->hdr, pdu->length,
 461                                      &retransmissionPdu);
 462
 463         // get token from saved data in retransmission list
 464         if (retransmissionPdu && CA_EMPTY == code)
 465         {
 466             CAResult_t res = CAGetTokenFromPDU((const coap_hdr_t *)retransmissionPdu,
 467                                                &(ResInfo->info));
 468             if (CA_STATUS_OK != res)
 469             {
 470                 OIC_LOG(ERROR, TAG, "fail to get Token from retransmission list");
 471                 OICFree(ResInfo->info.token);
 472             }
 473         }
 474         OICFree(retransmissionPdu);
 475         cadata->responseInfo = ResInfo;
 476
 477         CAQueueingThreadAddData(&g_receiveThread, cadata, sizeof(CAData_t));
 478     }
 479
 480     if (pdu)
 481     {
 482         coap_delete_pdu(pdu);
 483     }
 484     OIC_LOG(DEBUG, TAG, "OUT");
 485 }
 486
 487 static void CANetworkChangedCallback(const CAEndpoint_t *info, CANetworkStatus_t status)
 488 {
 489     OIC_LOG(DEBUG, TAG, "IN");
 490
 491     OIC_LOG(DEBUG, TAG, "OUT");
 492 }
 493
 494 void CAHandleRequestResponseCallbacks()
 495 {
 496
 497 #ifdef SINGLE_HANDLE
 498     // parse the data and call the callbacks.
 499     // #1 parse the data
 500     // #2 get endpoint
 501
 502     ca_mutex_lock(g_receiveThread.threadMutex);
 503
 504     u_queue_message_t *item = u_queue_get_element(g_receiveThread.dataQueue);
 505
 506     ca_mutex_unlock(g_receiveThread.threadMutex);
 507
 508     if (NULL == item)
 509     {
 510         return;
 511     }
 512
 513     // get values
 514     void *msg = item->msg;
 515
 516     if (NULL == msg)
 517     {
 518         return;
 519     }
 520
 521     // get endpoint
 522     CAData_t *td = (CAData_t *) msg;
 523
 524     if (td->requestInfo && g_requestHandler)
 525     {
 526         OIC_LOG_V(DEBUG, TAG, "request callback : %d", td->requestInfo->info.numOptions);
 527         g_requestHandler(td->remoteEndpoint, td->requestInfo);
 528     }
 529     else if (td->responseInfo && g_responseHandler)
 530     {
 531         OIC_LOG_V(DEBUG, TAG, "response callback : %d", td->responseInfo->info.numOptions);
 532         g_responseHandler(td->remoteEndpoint, td->responseInfo);
 533     }
 534     else if (td->errorInfo && g_errorHandler)
 535     {
 536         OIC_LOG_V(DEBUG, TAG, "error callback error: %d", td->errorInfo->result);
 537         g_errorHandler(td->remoteEndpoint, td->errorInfo);
 538     }
 539
 540     CADataDestroyer(msg, sizeof(CAData_t));
 541
 542 #endif
 543     OIC_LOG(DEBUG, TAG, "CAHandleRequestResponseCallbacks OUT");
 544 }
 545
 546 CAResult_t CADetachRequestMessage(const CAEndpoint_t *object, const CARequestInfo_t *request)
 547 {
 548     OIC_LOG(DEBUG, TAG, "IN");
 549
 550     VERIFY_NON_NULL(object, TAG, "object");
 551     VERIFY_NON_NULL(request, TAG, "request");
 552
 553     if (false == CAIsSelectedNetworkAvailable())
 554     {
 555         return CA_STATUS_FAILED;
 556     }
 557
 558     CAEndpoint_t *remoteEndpoint = NULL;
 559     CARequestInfo_t *requestInfo = NULL;
 560     CAData_t *data = (CAData_t *) OICCalloc(1, sizeof(CAData_t));
 561     CA_MEMORY_ALLOC_CHECK(data);
 562
 563     // clone remote endpoint
 564     remoteEndpoint = CACloneEndpoint(object);
 565     CA_MEMORY_ALLOC_CHECK(remoteEndpoint);
 566
 567     // clone request info
 568     requestInfo = CACloneRequestInfo(request);
 569     CA_MEMORY_ALLOC_CHECK(requestInfo);
 570
 571     // save data
 572     data->type = request->isMulticast ? SEND_TYPE_MULTICAST : SEND_TYPE_UNICAST;
 573     data->remoteEndpoint = remoteEndpoint;
 574     data->requestInfo = requestInfo;
 575     data->responseInfo = NULL;
 576     data->options = NULL;
 577     data->numOptions = 0;
 578     if (NULL != requestInfo->info.options && 0 < requestInfo->info.numOptions)
 579     {
 580         uint8_t numOptions = requestInfo->info.numOptions;
 581         // copy data
 582         CAHeaderOption_t *headerOption = (CAHeaderOption_t *) OICMalloc(sizeof(CAHeaderOption_t)
 583                                                                         * numOptions);
 584         CA_MEMORY_ALLOC_CHECK(headerOption);
 585
 586         memcpy(headerOption, requestInfo->info.options, sizeof(CAHeaderOption_t) * numOptions);
 587
 588         data->options = headerOption;
 589         data->numOptions = numOptions;
 590     }
 591
 592     // add thread
 593     CAQueueingThreadAddData(&g_sendThread, data, sizeof(CAData_t));
 594     OIC_LOG(DEBUG, TAG, "OUT");
 595     return CA_STATUS_OK;
 596
 597 // memory error label.
 598 memory_error_exit:
 599     CAAdapterFreeEndpoint(remoteEndpoint);
 600     CADestroyRequestInfoInternal(requestInfo);
 601
 602     OICFree(data);
 603     OIC_LOG(DEBUG, TAG, "OUT");
 604     return CA_MEMORY_ALLOC_FAILED;
 605 }
 606
 607 CAResult_t CADetachResponseMessage(const CAEndpoint_t *object,
 608                                    const CAResponseInfo_t *response)
 609 {
 610     OIC_LOG(DEBUG, TAG, "IN");
 611     VERIFY_NON_NULL(object, TAG, "object");
 612     VERIFY_NON_NULL(response, TAG, "response");
 613
 614     if (false == CAIsSelectedNetworkAvailable())
 615     {
 616         return CA_STATUS_FAILED;
 617     }
 618
 619     CAEndpoint_t *remoteEndpoint = NULL;
 620     CAResponseInfo_t *responseInfo = NULL;
 621
 622     // allocate & initialize
 623     CAData_t *data = (CAData_t *) OICCalloc(1, sizeof(CAData_t));
 624     CA_MEMORY_ALLOC_CHECK(data);
 625
 626     // clone remote endpoint
 627     remoteEndpoint = CACloneEndpoint(object);
 628     CA_MEMORY_ALLOC_CHECK(remoteEndpoint);
 629
 630     // clone response info
 631     responseInfo = CACloneResponseInfo(response);
 632     CA_MEMORY_ALLOC_CHECK(responseInfo);
 633
 634     // save data
 635     data->type = SEND_TYPE_UNICAST;
 636     data->remoteEndpoint = remoteEndpoint;
 637     data->requestInfo = NULL;
 638     data->responseInfo = responseInfo;
 639     data->options = NULL;
 640     data->numOptions = 0;
 641     if (NULL != responseInfo->info.options && 0 < responseInfo->info.numOptions)
 642     {
 643         uint8_t numOptions = responseInfo->info.numOptions;
 644         // copy data
 645         CAHeaderOption_t *headerOption = (CAHeaderOption_t *) OICMalloc(sizeof(CAHeaderOption_t)
 646                                                                         * numOptions);
 647         CA_MEMORY_ALLOC_CHECK(headerOption);
 648
 649         memcpy(headerOption, responseInfo->info.options, sizeof(CAHeaderOption_t) * numOptions);
 650
 651         data->options = headerOption;
 652         data->numOptions = numOptions;
 653     }
 654
 655     // add thread
 656     CAQueueingThreadAddData(&g_sendThread, data, sizeof(CAData_t));
 657
 658     OIC_LOG(DEBUG, TAG, "OUT");
 659     return CA_STATUS_OK;
 660
 661 // memory error label.
 662 memory_error_exit:
 663     CAAdapterFreeEndpoint(remoteEndpoint);
 664     CADestroyResponseInfoInternal(responseInfo);
 665     OICFree(data);
 666     OIC_LOG(DEBUG, TAG, "OUT");
 667
 668     return CA_MEMORY_ALLOC_FAILED;
 669 }
 670
 671 CAResult_t CADetachMessageResourceUri(const CAURI_t resourceUri, const CAToken_t token,
 672                                       uint8_t tokenLength, const CAHeaderOption_t *options,
 673                                       uint8_t numOptions)
 674 {
 675     return CA_NOT_SUPPORTED;
 676 }
 677
 678 void CASetInterfaceCallbacks(CARequestCallback ReqHandler, CAResponseCallback RespHandler,
 679                              CAErrorCallback errroHandler)
 680 {
 681     OIC_LOG(DEBUG, TAG, "IN");
 682     g_requestHandler = ReqHandler;
 683     g_responseHandler = RespHandler;
 684     g_errorHandler = errroHandler;
 685     OIC_LOG(DEBUG, TAG, "OUT");
 686 }
 687
 688 CAResult_t CAInitializeMessageHandler()
 689 {
 690     OIC_LOG(DEBUG, TAG, "IN");
 691     CASetPacketReceivedCallback(CAReceivedPacketCallback);
 692
 693     CASetNetworkChangeCallback(CANetworkChangedCallback);
 694     CASetErrorHandleCallback(CAErrorHandler);
 695
 696     // create thread pool
 697     CAResult_t res = ca_thread_pool_init(MAX_THREAD_POOL_SIZE, &g_threadPoolHandle);
 698
 699     if (res != CA_STATUS_OK)
 700     {
 701         OIC_LOG(ERROR, TAG, "thread pool initialize error.");
 702         return res;
 703     }
 704
 705     // send thread initialize
 706     if (CA_STATUS_OK != CAQueueingThreadInitialize(&g_sendThread, g_threadPoolHandle,
 707                                                    CASendThreadProcess, CADataDestroyer))
 708     {
 709         OIC_LOG(ERROR, TAG, "Failed to Initialize send queue thread");
 710         return CA_STATUS_FAILED;
 711     }
 712
 713     // start send thread
 714     res = CAQueueingThreadStart(&g_sendThread);
 715
 716     if (res != CA_STATUS_OK)
 717     {
 718         OIC_LOG(ERROR, TAG, "thread start error(send thread).");
 719         ca_thread_pool_free(g_threadPoolHandle);
 720         g_threadPoolHandle = NULL;
 721         return res;
 722     }
 723
 724     // receive thread initialize
 725     if (CA_STATUS_OK != CAQueueingThreadInitialize(&g_receiveThread, g_threadPoolHandle,
 726                                                    CAReceiveThreadProcess, CADataDestroyer))
 727     {
 728         OIC_LOG(ERROR, TAG, "Failed to Initialize receive queue thread");
 729         return CA_STATUS_FAILED;
 730     }
 731
 732 #ifndef SINGLE_HANDLE // This will be enabled when RI supports multi threading
 733     // start receive thread
 734     res = CAQueueingThreadStart(&gReceiveThread);
 735
 736     if (res != CA_STATUS_OK)
 737     {
 738         OIC_LOG(ERROR, TAG, "thread start error(receive thread).");
 739         return res;
 740     }
 741 #endif
 742
 743     // retransmission initialize
 744     CARetransmissionInitialize(&g_retransmissionContext, g_threadPoolHandle, CASendUnicastData,
 745                                CATimeoutCallback, NULL);
 746
 747     // start retransmission
 748     res = CARetransmissionStart(&g_retransmissionContext);
 749
 750     if (res != CA_STATUS_OK)
 751     {
 752         OIC_LOG(ERROR, TAG, "thread start error(retransmission thread).");
 753         return res;
 754     }
 755
 756     // initialize interface adapters by controller
 757     CAInitializeAdapters(g_threadPoolHandle);
 758     OIC_LOG(DEBUG, TAG, "OUT");
 759     return CA_STATUS_OK;
 760 }
 761
 762 void CATerminateMessageHandler()
 763 {
 764     OIC_LOG(DEBUG, TAG, "IN");
 765     CATransportAdapter_t connType;
 766     u_arraylist_t *list = CAGetSelectedNetworkList();
 767     uint32_t length = u_arraylist_length(list);
 768
 769     uint32_t i = 0;
 770     for (i = 0; i < length; i++)
 771     {
 772         void* ptrType = u_arraylist_get(list, i);
 773
 774         if (NULL == ptrType)
 775         {
 776             continue;
 777         }
 778
 779         connType = *(CATransportAdapter_t *)ptrType;
 780         CAStopAdapter(connType);
 781     }
 782
 783     // stop retransmission
 784     if (NULL != g_retransmissionContext.threadMutex)
 785     {
 786         CARetransmissionStop(&g_retransmissionContext);
 787     }
 788
 789     // stop thread
 790     // delete thread data
 791     if (NULL != g_sendThread.threadMutex)
 792     {
 793         CAQueueingThreadStop(&g_sendThread);
 794     }
 795
 796     // stop thread
 797     // delete thread data
 798     if (NULL != g_receiveThread.threadMutex)
 799     {
 800 #ifndef SINGLE_HANDLE // This will be enabled when RI supports multi threading
 801         CAQueueingThreadStop(&gReceiveThread);
 802 #endif
 803     }
 804
 805     // destroy thread pool
 806     if (NULL != g_threadPoolHandle)
 807     {
 808         ca_thread_pool_free(g_threadPoolHandle);
 809         g_threadPoolHandle = NULL;
 810     }
 811
 812     CARetransmissionDestroy(&g_retransmissionContext);
 813     CAQueueingThreadDestroy(&g_sendThread);
 814     CAQueueingThreadDestroy(&g_receiveThread);
 815
 816     // terminate interface adapters by controller
 817     CATerminateAdapters();
 818
 819     OIC_LOG(DEBUG, TAG, "OUT");
 820 }
 821
 822 void CALogPDUInfo(coap_pdu_t *pdu)
 823 {
 824     VERIFY_NON_NULL_VOID(pdu, TAG, "pdu");
 825
 826     OIC_LOG_V(DEBUG, TAG, "PDU Maker - payload : %s", pdu->data);
 827
 828     OIC_LOG_V(DEBUG, TAG, "PDU Maker - type : %d", pdu->hdr->type);
 829
 830     OIC_LOG_V(DEBUG, TAG, "PDU Maker - code : %d", pdu->hdr->code);
 831
 832     OIC_LOG_V(DEBUG, TAG, "PDU Maker - id : %d", ntohs(pdu->hdr->id));
 833
 834     OIC_LOG(DEBUG, TAG, "PDU Maker - token :");
 835
 836     OIC_LOG_BUFFER(DEBUG, TAG, pdu->hdr->token, pdu->hdr->token_length);
 837 }
 838
 839 void CAErrorHandler(const CAEndpoint_t *endpoint,
 840                     const void *data, uint32_t dataLen,
 841                     CAResult_t result)
 842 {
 843     OIC_LOG(DEBUG, TAG, "IN");
 844     VERIFY_NON_NULL_VOID(endpoint, TAG, "remoteEndpoint");
 845     VERIFY_NON_NULL_VOID(data, TAG, "data");
 846
 847     uint32_t code = CA_NOT_FOUND;
 848     //Do not free remoteEndpoint and data. Currently they will be freed in data thread
 849     //Get PDU data
 850     coap_pdu_t *pdu = (coap_pdu_t *)CAParsePDU((const char *)data, dataLen, &code);
 851     if (NULL == pdu)
 852     {
 853         OIC_LOG(ERROR, TAG, "Parse PDU failed");
 854         return;
 855     }
 856
 857     CAErrorInfo_t *errorInfo = (CAErrorInfo_t *)OICCalloc(1, sizeof (CAErrorInfo_t));
 858     if (NULL == errorInfo)
 859     {
 860         OIC_LOG(ERROR, TAG, "CAErrorHandler, Memory allocation failed!");
 861         coap_delete_pdu(pdu);
 862         return;
 863     }
 864
 865     CAResult_t res = CAGetErrorInfoFromPDU(pdu, errorInfo);
 866     if (CA_STATUS_OK != res)
 867     {
 868         OIC_LOG_V(ERROR, TAG, "CAGetErrorInfoFromPDU failed : %d", res);
 869         OICFree(errorInfo);
 870         coap_delete_pdu(pdu);
 871        return;
 872     }
 873
 874     errorInfo->result = result;
 875     OIC_LOG_V(DEBUG, TAG, "error : %d", result);
 876     if (NULL != errorInfo->info.payload)
 877     {
 878         OIC_LOG_V(DEBUG, TAG, "error, payload: %s", errorInfo->info.payload);
 879     }
 880
 881     OIC_LOG(DEBUG, TAG, "error, token");
 882     OIC_LOG_BUFFER(DEBUG, TAG, (const uint8_t *) errorInfo->info.token,
 883                    errorInfo->info.tokenLength);
 884     OIC_LOG_V(DEBUG, TAG, "CAErrorHandler, msgID : %d", errorInfo->info.messageId);
 885
 886     CAEndpoint_t *rep = NULL;
 887     rep = CACloneEndpoint(endpoint);
 888     if (!rep)
 889     {
 890         OIC_LOG(ERROR, TAG, "CAErrorHandler, CloneEndpoint Failed");
 891         OICFree(errorInfo);
 892         coap_delete_pdu(pdu);
 893         return;
 894     }
 895
 896     // store the data at queue.
 897     CAData_t *cadata = NULL;
 898     cadata = (CAData_t *) OICCalloc(1, sizeof(CAData_t));
 899     if (NULL == cadata)
 900     {
 901         OIC_LOG(ERROR, TAG, "CAReceivedPacketCallback, Memory allocation failed !");
 902         CADestroyEndpointInternal(rep);
 903         OICFree(errorInfo);
 904         coap_delete_pdu(pdu);
 905         return;
 906     }
 907
 908     cadata->remoteEndpoint = rep;
 909     cadata->requestInfo = NULL;
 910     cadata->responseInfo = NULL;
 911     cadata->errorInfo = errorInfo;
 912     cadata->dataType = CA_ERROR_DATA;
 913
 914     CAQueueingThreadAddData(&g_receiveThread, cadata, sizeof(CAData_t));
 915     coap_delete_pdu(pdu);
 916
 917     return;
 918 }