1 /* ****************************************************************
3 * Copyright 2015 Samsung Electronics All Rights Reserved.
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
11 * http://www.apache.org/licenses/LICENSE-2.0
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.
19 ******************************************************************/
21 #include <sys/types.h>
22 #include <sys/socket.h>
23 #include <sys/select.h>
24 #include <sys/ioctl.h>
26 #include <tinyara/config.h>
34 #include <arpa/inet.h>
35 #include <netinet/in.h>
40 #include <sys/socket.h>
41 #include <netinet/in.h>
45 #include "catcpinterface.h"
46 #include "caipnwmonitor.h"
48 #include "caadapterutils.h"
50 #include "oic_malloc.h"
51 #include "oic_string.h"
54 #include "ca_adapter_net_ssl.h"
58 * Logging tag for module name.
60 //#define TAG "OIC_CA_TCP_SERVER"
61 #define TAG TCP_SERVER_TAG
64 * Maximum CoAP over TCP header length
65 * to know the total data length.
67 #define COAP_MAX_HEADER_SIZE 6
72 #define TLS_HEADER_SIZE 5
75 * Max Connection Counts.
77 #define MAX_CONNECTION_COUNTS 500
79 #define COAP_TCP_MAX_BUFFER_CHUNK_SIZE 65530 //64kb - 6 (coap+tcp max header size)
81 #define MILLISECONDS_PER_SECOND (1000)
86 static ca_thread_pool_t g_threadPool = NULL;
89 * Mutex to synchronize device object list.
91 static oc_mutex g_mutexObjectList = NULL;
94 * Conditional mutex to synchronize.
96 static oc_cond g_condObjectList = NULL;
99 * Mutex to synchronize send.
101 static oc_mutex g_mutexSend = NULL;
104 * Conditional mutex to synchronize send.
106 static oc_cond g_condSend = NULL;
109 * Maintains the callback to be notified when data received from remote device.
111 static CATCPPacketReceivedCallback g_packetReceivedCallback = NULL;
114 * Error callback to update error in TCP.
116 static CATCPErrorHandleCallback g_tcpErrorHandler = NULL;
119 * Connected Callback to pass the connection information to RI.
121 static CATCPConnectionHandleCallback g_connectionCallback = NULL;
123 static CASocketFd_t CACreateAcceptSocket(int family, CASocket_t *sock);
124 static void CAAcceptConnection(CATransportFlags_t flag, CASocket_t *sock);
125 static void CAFindReadyMessage();
126 static void CASelectReturned(fd_set *readFds);
127 static void CAReceiveMessage(int fd);
128 static void CAReceiveHandler(void *data);
129 static CAResult_t CATCPCreateSocket(int family, CATCPSessionInfo_t *svritem);
130 static void CATCPInitializeSocket();
131 static CATCPSessionInfo_t *CAGetSessionInfoFromFDAsOwner(int fd, size_t *index);
133 #if defined(__TIZEN__)
134 static char g_cloudproxyUri[CA_MAX_URI_LENGTH];
136 CAResult_t CASetCloudAddressForProxy(const char *uri)
139 memset(g_cloudproxyUri, '\0', sizeof (g_cloudproxyUri));
141 OICStrcpy(g_cloudproxyUri, sizeof (g_cloudproxyUri), uri);
145 const char *CAGetCloudAddressForProxy()
147 if (g_cloudproxyUri[0] == '\0')
149 return g_cloudproxyUri;
153 #define CHECKFD(FD) \
154 if (FD > caglobals.tcp.maxfd) \
155 caglobals.tcp.maxfd = FD;
157 #define CLOSE_SOCKET(TYPE) \
158 if (caglobals.tcp.TYPE.fd != OC_INVALID_SOCKET) \
160 close(caglobals.tcp.TYPE.fd); \
161 caglobals.tcp.TYPE.fd = OC_INVALID_SOCKET; \
164 #define CA_FD_SET(TYPE, FDS) \
165 if (caglobals.tcp.TYPE.fd != OC_INVALID_SOCKET) \
167 FD_SET(caglobals.tcp.TYPE.fd, FDS); \
170 void CATCPDestroyMutex()
172 if (g_mutexObjectList)
174 oc_mutex_free(g_mutexObjectList);
175 g_mutexObjectList = NULL;
179 CAResult_t CATCPCreateMutex()
181 if (!g_mutexObjectList)
183 g_mutexObjectList = oc_mutex_new();
184 if (!g_mutexObjectList)
186 OIC_LOG(ERROR, TAG, "Failed to create mutex!");
187 return CA_STATUS_FAILED;
194 void CATCPDestroyCond()
196 if (g_condObjectList)
198 oc_cond_free(g_condObjectList);
199 g_condObjectList = NULL;
203 CAResult_t CATCPCreateCond()
205 if (!g_condObjectList)
207 g_condObjectList = oc_cond_new();
208 if (!g_condObjectList)
210 OIC_LOG(ERROR, TAG, "Failed to create cond!");
211 return CA_STATUS_FAILED;
217 void CATCPDestroySendMutex()
221 oc_mutex_free(g_mutexSend);
226 CAResult_t CATCPCreateSendMutex()
230 g_mutexSend = oc_mutex_new();
233 OIC_LOG(ERROR, TAG, "Failed to create send mutex!");
234 return CA_STATUS_FAILED;
241 void CATCPDestroySendCond()
245 oc_cond_free(g_condSend);
250 CAResult_t CATCPCreateSendCond()
254 g_condSend = oc_cond_new();
257 OIC_LOG(ERROR, TAG, "Failed to create send cond!");
258 return CA_STATUS_FAILED;
264 static void CAReceiveHandler(void *data)
267 OIC_LOG(DEBUG, TAG, "IN - CAReceiveHandler");
271 oc_mutex_lock(g_mutexObjectList);
272 if (caglobals.tcp.terminate)
274 oc_mutex_unlock(g_mutexObjectList);
277 oc_mutex_unlock(g_mutexObjectList);
278 CAFindReadyMessage();
281 oc_mutex_lock(g_mutexObjectList);
282 oc_cond_signal(g_condObjectList);
283 oc_mutex_unlock(g_mutexObjectList);
285 OIC_LOG(DEBUG, TAG, "OUT - CAReceiveHandler");
288 static void CAFindReadyMessage()
291 struct timeval timeout = { .tv_sec = caglobals.tcp.selectTimeout };
294 CA_FD_SET(ipv4, &readFds);
295 CA_FD_SET(ipv4s, &readFds);
296 CA_FD_SET(ipv6, &readFds);
297 CA_FD_SET(ipv6s, &readFds);
299 if (OC_INVALID_SOCKET != caglobals.tcp.shutdownFds[0])
301 FD_SET(caglobals.tcp.shutdownFds[0], &readFds);
304 if (OC_INVALID_SOCKET != caglobals.tcp.connectionFds[0])
306 FD_SET(caglobals.tcp.connectionFds[0], &readFds);
309 uint32_t length = u_arraylist_length(caglobals.tcp.svrlist);
310 for (size_t i = 0; i < length; i++)
312 CATCPSessionInfo_t *svritem =
313 (CATCPSessionInfo_t *) u_arraylist_get(caglobals.tcp.svrlist, i);
314 if (svritem && 0 <= svritem->fd && CONNECTED == svritem->state)
316 FD_SET(svritem->fd, &readFds);
320 int ret = select(caglobals.tcp.maxfd + 1, &readFds, NULL, NULL, &timeout);
322 oc_mutex_lock(g_mutexObjectList);
323 if (caglobals.tcp.terminate)
325 oc_mutex_unlock(g_mutexObjectList);
326 OIC_LOG_V(INFO, TAG, "Packet receiver Stop request received.");
329 oc_mutex_unlock(g_mutexObjectList);
334 OIC_LOG_V(FATAL, TAG, "select error %s", strerror(errno));
339 CASelectReturned(&readFds);
342 static void CASelectReturned(fd_set *readFds)
344 VERIFY_NON_NULL_VOID(readFds, TAG, "readFds is NULL");
346 if (caglobals.tcp.ipv4.fd != -1 && FD_ISSET(caglobals.tcp.ipv4.fd, readFds))
348 CAAcceptConnection(CA_IPV4, &caglobals.tcp.ipv4);
351 else if (caglobals.tcp.ipv4s.fd != -1 && FD_ISSET(caglobals.tcp.ipv4s.fd, readFds))
353 CAAcceptConnection(CA_IPV4 | CA_SECURE, &caglobals.tcp.ipv4s);
356 else if (caglobals.tcp.ipv6.fd != -1 && FD_ISSET(caglobals.tcp.ipv6.fd, readFds))
358 CAAcceptConnection(CA_IPV6, &caglobals.tcp.ipv6);
361 else if (caglobals.tcp.ipv6s.fd != -1 && FD_ISSET(caglobals.tcp.ipv6s.fd, readFds))
363 CAAcceptConnection(CA_IPV6 | CA_SECURE, &caglobals.tcp.ipv6s);
366 else if (-1 != caglobals.tcp.connectionFds[0] &&
367 FD_ISSET(caglobals.tcp.connectionFds[0], readFds))
369 // new connection was created from remote device.
370 // exit the function to update read file descriptor.
371 char buf[MAX_ADDR_STR_SIZE_CA] = {0};
372 ssize_t len = read(caglobals.tcp.connectionFds[0], buf, sizeof (buf));
377 OIC_LOG_V(DEBUG, TAG, "Received new connection event with [%s]", buf);
382 int *readFDList = NULL;
383 size_t readFDListSize = 0;
385 oc_mutex_lock(g_mutexObjectList);
386 uint32_t length = u_arraylist_length(caglobals.tcp.svrlist);
388 readFDList = (int*) OICCalloc(length, sizeof(int));
389 if (NULL == readFDList)
391 OIC_LOG_V(ERROR, TAG, "Failed to allocate memory!");
392 oc_mutex_unlock(g_mutexObjectList);
396 for (size_t i = 0; i < length; i++)
398 CATCPSessionInfo_t *svritem =
399 (CATCPSessionInfo_t *) u_arraylist_get(caglobals.tcp.svrlist, i);
400 if (svritem && svritem->fd >= 0)
402 if (FD_ISSET(svritem->fd, readFds))
404 readFDList[readFDListSize++] = svritem->fd;
408 oc_mutex_unlock(g_mutexObjectList);
410 // Read incomming messages from fds
411 for (size_t i = 0; i < readFDListSize; i++)
413 CAReceiveMessage(readFDList[i]);
420 static void CAAcceptConnection(CATransportFlags_t flag, CASocket_t *sock)
422 OIC_LOG_V(INFO, TAG, "In %s", __func__);
423 VERIFY_NON_NULL_VOID(sock, TAG, "sock is NULL");
425 if (MAX_CONNECTION_COUNTS == u_arraylist_length(caglobals.tcp.svrlist))
427 OIC_LOG_V(INFO, TAG, "Exceeding the max connection counts limit, close listening port");
429 sock->fd = OC_INVALID_SOCKET;
433 struct sockaddr_storage clientaddr;
434 socklen_t clientlen = sizeof (struct sockaddr_in);
437 clientlen = sizeof(struct sockaddr_in6);
440 CASocketFd_t sockfd = accept(sock->fd, (struct sockaddr *)&clientaddr, &clientlen);
441 if (OC_INVALID_SOCKET != sockfd)
443 CATCPSessionInfo_t *svritem =
444 (CATCPSessionInfo_t *) OICCalloc(1, sizeof (*svritem));
447 OIC_LOG(ERROR, TAG, "Out of memory");
452 svritem->fd = sockfd;
453 svritem->sep.endpoint.flags = flag;
454 svritem->sep.endpoint.adapter = CA_ADAPTER_TCP;
455 svritem->state = CONNECTED;
456 svritem->isClient = false;
457 CAConvertAddrToName((struct sockaddr_storage *)&clientaddr, clientlen,
458 svritem->sep.endpoint.addr, &svritem->sep.endpoint.port);
460 // Allocate message buffer
461 svritem->tlsdata = (unsigned char*) OICCalloc(TLS_DATA_MAX_SIZE, sizeof(unsigned char));
462 if (!svritem->tlsdata)
464 OIC_LOG(ERROR, TAG, "Out of memory");
470 oc_mutex_lock(g_mutexObjectList);
471 bool result = u_arraylist_add(caglobals.tcp.svrlist, svritem);
474 OIC_LOG(ERROR, TAG, "u_arraylist_add failed.");
476 OICFree(svritem->tlsdata);
478 oc_mutex_unlock(g_mutexObjectList);
481 oc_mutex_unlock(g_mutexObjectList);
485 // pass the connection information to CA Common Layer.
486 if (g_connectionCallback)
488 g_connectionCallback(&(svritem->sep.endpoint), true, svritem->isClient);
491 OIC_LOG_V(INFO, TAG, "Out %s", __func__);
495 * Clean socket state data
497 * @param[in/out] item - socket state data
499 void CACleanData(CATCPSessionInfo_t *svritem)
503 OICFree(svritem->data);
504 svritem->data = NULL;
509 svritem->totalLen = 0;
511 svritem->protocol = UNKNOWN;
516 * Construct CoAP header and payload from buffer
518 * @param[in] svritem - used socket, buffer, current received message length and protocol
519 * @param[in/out] data - data buffer, this value is updated as data is copied to svritem
520 * @param[in/out] dataLength - length of data, this value decreased as data is copied to svritem
521 * @return - CA_STATUS_OK or appropriate error code
523 CAResult_t CAConstructCoAP(CATCPSessionInfo_t *svritem, unsigned char **data,
526 OIC_LOG_V(DEBUG, TAG, "In %s", __func__);
528 if (NULL == svritem || NULL == data || NULL == dataLength)
530 OIC_LOG(ERROR, TAG, "Invalid input parameter(NULL)");
531 return CA_STATUS_INVALID_PARAM;
534 unsigned char *inBuffer = *data;
535 size_t inLen = *dataLength;
536 OIC_LOG_V(DEBUG, TAG, "before-datalength : %zd", *dataLength);
538 if (NULL == svritem->data && inLen > 0)
540 // allocate memory for message header (CoAP header size because it is bigger)
541 svritem->data = (unsigned char *) OICCalloc(1, COAP_MAX_HEADER_SIZE);
542 if (NULL == svritem->data)
544 OIC_LOG(ERROR, TAG, "OICCalloc - out of memory");
545 return CA_MEMORY_ALLOC_FAILED;
548 // copy 1 byte to parse coap header length
549 memcpy(svritem->data, inBuffer, 1);
551 svritem->bufLen = COAP_MAX_HEADER_SIZE;
556 //if not enough data received - read them on next CAFillHeader() call
562 //if enough data received - parse header
563 svritem->protocol = COAP;
565 //seems CoAP data received. read full coap header.
566 coap_transport_t transport = coap_get_tcp_header_type_from_initbyte(svritem->data[0] >> 4);
567 size_t headerLen = coap_get_tcp_header_length_for_transport(transport);
571 if (svritem->len < headerLen)
573 copyLen = headerLen - svritem->len;
579 //read required bytes to have full CoAP header
580 memcpy(svritem->data + svritem->len, inBuffer, copyLen);
581 svritem->len += copyLen;
585 //if not enough data received - read them on next CAFillHeader() call
586 if (svritem->len < headerLen)
590 OIC_LOG(DEBUG, TAG, "CoAP header received partially. Wait for rest header data");
594 //calculate CoAP message length
595 svritem->totalLen = CAGetTotalLengthFromHeader(svritem->data);
601 // Calculate length of data to be copied.
602 copyLen = svritem->totalLen - svritem->len;
608 // Is buffer not big enough for remaining data ?
609 if (svritem->len + copyLen > svritem->bufLen)
611 // Resize buffer to accommodate enough space
612 size_t extLen = svritem->totalLen - svritem->bufLen;
613 if (extLen > COAP_TCP_MAX_BUFFER_CHUNK_SIZE)
615 extLen = COAP_TCP_MAX_BUFFER_CHUNK_SIZE;
618 // Allocate required memory
619 unsigned char *buffer = OICRealloc(svritem->data, svritem->bufLen + extLen);
622 OIC_LOG(ERROR, TAG, "OICRealloc - out of memory");
623 return CA_MEMORY_ALLOC_FAILED;
626 svritem->data = buffer;
627 svritem->bufLen += extLen;
630 // Read required bytes to have full CoAP payload
631 memcpy(svritem->data + svritem->len, inBuffer, copyLen);
632 svritem->len += copyLen;
640 OIC_LOG_V(DEBUG, TAG, "after-datalength : %zd", *dataLength);
641 OIC_LOG_V(DEBUG, TAG, "Out %s", __func__);
645 static void CAReceiveMessage(int fd)
647 CAResult_t res = CA_STATUS_OK;
649 oc_mutex_lock(g_mutexObjectList);
651 //get remote device information from file descriptor.
653 CATCPSessionInfo_t *svritem = CAGetSessionInfoFromFDAsOwner(fd, &index);
656 OIC_LOG(ERROR, TAG, "there is no connection information in list");
657 oc_mutex_unlock(g_mutexObjectList);
661 CASecureEndpoint_t peerEP = svritem->sep;
663 if (svritem->sep.endpoint.flags & CA_SECURE) // Secure connection
665 svritem->protocol = TLS;
669 size_t tlsLength = 0;
671 if (TLS_HEADER_SIZE > svritem->tlsLen)
673 nbRead = TLS_HEADER_SIZE - svritem->tlsLen;
677 //[3][4] bytes in tls header are tls payload length
678 tlsLength = TLS_HEADER_SIZE +
679 (size_t)((svritem->tlsdata[3] << 8) | svritem->tlsdata[4]);
680 OIC_LOG_V(DEBUG, TAG, "total tls length = %zd", tlsLength);
681 if (tlsLength > TLS_DATA_MAX_SIZE)
683 OIC_LOG_V(ERROR, TAG, "total tls length is too big (buffer size : %u)",
685 oc_mutex_unlock(g_mutexObjectList);
686 CATCPDisconnectSession(&peerEP.endpoint);
689 nbRead = tlsLength - svritem->tlsLen;
692 len = recv(fd, svritem->tlsdata + svritem->tlsLen, nbRead, 0);
695 OIC_LOG_V(ERROR, TAG, "recv failed %s", strerror(errno));
696 res = CA_RECEIVE_FAILED;
700 OIC_LOG(INFO, TAG, "Received disconnect from peer. Close connection");
701 svritem->state = DISCONNECTED;
702 res = CA_DESTINATION_DISCONNECTED;
706 svritem->tlsLen += len;
707 OIC_LOG_V(DEBUG, TAG, "nb_read : %zd bytes , recv() : %d bytes, svritem->tlsLen : %zd bytes",
708 nbRead, len, svritem->tlsLen);
709 if (tlsLength > 0 && tlsLength == svritem->tlsLen)
711 // When successfully read data - pass them to callback.
712 // Dont invoke callback locking mutex
713 unsigned char *mesBuf = svritem->tlsdata;
714 size_t mesBufLen = svritem->tlsLen;
715 svritem->tlsdata = NULL;
716 oc_mutex_unlock(g_mutexObjectList);
718 res = CAdecryptSsl(&peerEP, (uint8_t *)mesBuf, mesBufLen);
719 OIC_LOG_V(INFO, TAG, "%s: CAdecryptSsl returned %d", __func__, res);
721 // Check for the svritem and reset buffer
722 oc_mutex_lock(g_mutexObjectList);
723 svritem = CAGetSessionInfoFromFDAsOwner(fd, &index);
726 svritem->tlsdata = mesBuf;
731 // svritem does not exist, thus free the message buffer
732 OIC_LOG(ERROR, TAG, "svritem not found. Freeing message buffer!");
739 else // Non-Secure connection
741 svritem->protocol = COAP;
743 // svritem->tlsdata can also be used as receiving buffer in case of raw tcp
744 len = recv(fd, svritem->tlsdata, TLS_DATA_MAX_SIZE, 0);
747 OIC_LOG_V(ERROR, TAG, "recv failed %s", strerror(errno));
748 res = CA_RECEIVE_FAILED;
752 OIC_LOG(INFO, TAG, "Received disconnect from peer. Close connection");
753 res = CA_DESTINATION_DISCONNECTED;
757 //when successfully read data - pass them to callback.
758 OIC_LOG_V(DEBUG, TAG, "recv() : %d bytes", len);
759 if (g_packetReceivedCallback)
761 // Dont invoke callback locking mutex
762 unsigned char *mesBuf = svritem->tlsdata;
763 svritem->tlsdata = NULL;
764 oc_mutex_unlock(g_mutexObjectList);
766 res = g_packetReceivedCallback(&peerEP, mesBuf, len);
768 // Check for the svritem and reset buffer
769 oc_mutex_lock(g_mutexObjectList);
770 svritem = CAGetSessionInfoFromFDAsOwner(fd, &index);
773 svritem->tlsdata = mesBuf;
778 // svritem does not exist, thus free the message buffer
779 OIC_LOG(ERROR, TAG, "svritem not found. Freeing message buffer!");
786 oc_mutex_unlock(g_mutexObjectList);
788 if (res != CA_STATUS_OK)
790 CATCPDisconnectSession(&peerEP.endpoint);
794 static ssize_t CAWakeUpForReadFdsUpdate(const char *host)
796 if (caglobals.tcp.connectionFds[1] != -1)
801 len = write(caglobals.tcp.connectionFds[1], host, strlen(host));
802 } while ((len == -1) && (errno == EINTR));
804 if ((len == -1) && (errno != EINTR) && (errno != EPIPE))
806 OIC_LOG_V(DEBUG, TAG, "write failed: %s", strerror(errno));
813 static CAResult_t CATCPConvertNameToAddr(int family, const char *host, uint16_t port,
814 struct sockaddr_storage *sockaddr)
816 struct addrinfo *addrs = NULL;
817 struct addrinfo hints = { .ai_family = family,
818 .ai_protocol = IPPROTO_TCP,
819 .ai_socktype = SOCK_STREAM,
820 .ai_flags = AI_NUMERICHOST };
822 int r = getaddrinfo(host, NULL, &hints, &addrs);
827 OIC_LOG_V(ERROR, TAG, "getaddrinfo failed: errno %s", strerror(errno));
831 OIC_LOG_V(ERROR, TAG, "getaddrinfo failed: %s", gai_strerror(r));
834 return CA_STATUS_FAILED;
836 // assumption: in this case, getaddrinfo will only return one addrinfo
837 // or first is the one we want.
838 if (addrs[0].ai_family == AF_INET6)
840 memcpy(sockaddr, addrs[0].ai_addr, sizeof (struct sockaddr_in6));
841 ((struct sockaddr_in6 *)sockaddr)->sin6_port = htons(port);
845 memcpy(sockaddr, addrs[0].ai_addr, sizeof (struct sockaddr_in));
846 ((struct sockaddr_in *)sockaddr)->sin_port = htons(port);
852 #if defined(__TIZEN__)
853 static int CAGetHTTPStatusCode(char * response) {
854 char *resp, *code_plus, *ptrSave;
857 resp = strdup(response);
858 strtok_r(resp, " ", &ptrSave); /* skip HTTP version */
859 code_plus = strtok_r(NULL, " ", &ptrSave);
861 ret = code_plus ? atoi(code_plus) : -1;
867 static CAResult_t CATCPCreateSocket(int family, CATCPSessionInfo_t *svritem)
869 VERIFY_NON_NULL(svritem, TAG, "svritem is NULL");
871 OIC_LOG_V(INFO, TAG, "try to connect with [%s:%u]",
872 svritem->sep.endpoint.addr, svritem->sep.endpoint.port);
874 // #1. create tcp socket.
875 int fd = socket(family, SOCK_STREAM, IPPROTO_TCP);
878 OIC_LOG_V(ERROR, TAG, "create socket failed: %s", strerror(errno));
879 return CA_SOCKET_OPERATION_FAILED;
883 // #2. convert address from string to binary.
884 struct sockaddr_storage sa = { .ss_family = family };
885 CAResult_t res = CATCPConvertNameToAddr(family, svritem->sep.endpoint.addr,
886 svritem->sep.endpoint.port, &sa);
887 if (CA_STATUS_OK != res)
889 OIC_LOG(ERROR, TAG, "convert name to sockaddr failed");
890 return CA_SOCKET_OPERATION_FAILED;
893 // #3. set socket length.
894 socklen_t socklen = 0;
895 if (sa.ss_family == AF_INET6)
897 struct sockaddr_in6 *sock6 = (struct sockaddr_in6 *)&sa;
898 if (!sock6->sin6_scope_id)
900 sock6->sin6_scope_id = svritem->sep.endpoint.ifindex;
902 socklen = sizeof(struct sockaddr_in6);
906 socklen = sizeof(struct sockaddr_in);
909 // #4. connect to remote server device.
910 if (connect(fd, (struct sockaddr *)&sa, socklen) < 0)
912 OIC_LOG_V(ERROR, TAG, "failed to connect socket, %s", strerror(errno));
913 CALogSendStateInfo(svritem->sep.endpoint.adapter, svritem->sep.endpoint.addr,
914 svritem->sep.endpoint.port, 0, false, strerror(errno));
915 return CA_SOCKET_OPERATION_FAILED;
918 OIC_LOG(INFO, TAG, "connect socket success");
919 svritem->state = CONNECTED;
920 CHECKFD(svritem->fd);
921 ssize_t len = CAWakeUpForReadFdsUpdate(svritem->sep.endpoint.addr);
924 OIC_LOG(ERROR, TAG, "wakeup receive thread failed");
925 return CA_SOCKET_OPERATION_FAILED;
928 #if defined(__TIZEN__)
929 // #5. Send HTTP CONNECT to proxy if proxy
931 const char *cloud_address = CAGetCloudAddressForProxy();
932 OIC_LOG_V(INFO, TAG, "Proxy : '%s'", cloud_address ? cloud_address : "(nil)");
934 if(cloud_address && *cloud_address)
937 int len = sprintf(message,
938 "CONNECT %s HTTP/1.1\r\n"
939 "Host: %s\r\n\r\n", cloud_address, cloud_address
942 ssize_t l = send(fd, message, len, 0);
945 OIC_LOG_V(ERROR, TAG, "failed to send HTTP CONNECT data (expected %d bytes, ret %zd)", len, l);
948 return CA_SOCKET_OPERATION_FAILED;
951 // maybe this should be called in other thread, it causes bottleneck.
952 OIC_LOG_V(INFO, TAG, "Message sent is : '%s'\n", message);
955 OIC_LOG_V(INFO, TAG, "Receiving response to CONNECT from proxy...");
957 l = recv(fd, message, 4096, 0);
959 OIC_LOG_V(INFO, TAG, "Received data : '%s'", message);
960 OIC_LOG_V(INFO, TAG, "Received len = %zd", l);
962 int status_code = CAGetHTTPStatusCode(message);
964 OIC_LOG_V(INFO, TAG, "HTTP status_code : %d", status_code);
965 if(status_code < 200 || status_code > 299)
967 OIC_LOG_V(ERROR, TAG, "Error, Wrong status code: %d", status_code);
970 return CA_SOCKET_OPERATION_FAILED;
978 static CASocketFd_t CACreateAcceptSocket(int family, CASocket_t *sock)
980 VERIFY_NON_NULL_RET(sock, TAG, "sock", -1);
982 if (OC_INVALID_SOCKET != sock->fd)
984 OIC_LOG(DEBUG, TAG, "accept socket created already");
988 socklen_t socklen = 0;
989 struct sockaddr_storage server = { .ss_family = family };
991 int fd = socket(family, SOCK_STREAM, IPPROTO_TCP);
992 if (OC_INVALID_SOCKET == fd)
994 OIC_LOG(ERROR, TAG, "Failed to create socket");
998 if (family == AF_INET6)
1000 // the socket is restricted to sending and receiving IPv6 packets only.
1002 //TODO: enable once IPv6 is supported
1004 if (-1 == setsockopt(fd, IPPROTO_IPV6, IPV6_V6ONLY, &on, sizeof (on)))
1006 OIC_LOG_V(ERROR, TAG, "IPV6_V6ONLY failed: %s", strerror(errno));
1010 ((struct sockaddr_in6 *)&server)->sin6_port = htons(sock->port);
1011 socklen = sizeof (struct sockaddr_in6);
1015 ((struct sockaddr_in *)&server)->sin_port = htons(sock->port);
1016 socklen = sizeof (struct sockaddr_in);
1020 if (-1 == setsockopt(fd, SOL_SOCKET, SO_REUSEADDR, &reuse, sizeof(reuse)))
1022 OIC_LOG(ERROR, TAG, "setsockopt SO_REUSEADDR");
1026 if (-1 == bind(fd, (struct sockaddr *)&server, socklen))
1028 OIC_LOG_V(ERROR, TAG, "bind socket failed: %s", strerror(errno));
1032 if (listen(fd, caglobals.tcp.listenBacklog) != 0)
1034 OIC_LOG(ERROR, TAG, "listen() error");
1038 if (sock->port) // use the given port
1041 if (setsockopt(fd, SOL_SOCKET, SO_REUSEADDR, OPTVAL_T(&on), sizeof (on)))
1043 OIC_LOG_V(ERROR, TAG, "SO_REUSEADDR failed: %s", strerror(errno));
1045 return OC_INVALID_SOCKET;
1048 else // return the assigned port
1050 if (-1 == getsockname(fd, (struct sockaddr *)&server, &socklen))
1052 OIC_LOG_V(ERROR, TAG, "getsockname failed: %s", strerror(errno));
1055 sock->port = ntohs(family == AF_INET6 ?
1056 ((struct sockaddr_in6 *)&server)->sin6_port :
1057 ((struct sockaddr_in *)&server)->sin_port);
1067 return OC_INVALID_SOCKET;
1070 static void CAInitializePipe(int *fds)
1072 int ret = pipe(fds);
1073 // TODO: Remove temporary workaround once F_GETFD / F_SETFD support is in TizenRT
1074 /* Temporary workaround: By pass F_GETFD / F_SETFD */
1084 OIC_LOG_V(ERROR, TAG, "pipe failed: %s", strerror(errno));
1089 ret = fcntl(fds[0], F_GETFD);
1092 ret = fcntl(fds[0], F_SETFD, ret|FD_CLOEXEC);
1096 ret = fcntl(fds[1], F_GETFD);
1100 ret = fcntl(fds[1], F_SETFD, ret|FD_CLOEXEC);
1110 OIC_LOG_V(ERROR, TAG, "pipe failed: %s", strerror(errno));
1116 #ifndef DISABLE_TCP_SERVER
1117 #define NEWSOCKET(FAMILY, NAME) \
1118 caglobals.tcp.NAME.fd = CACreateAcceptSocket(FAMILY, &caglobals.tcp.NAME); \
1119 if (caglobals.tcp.NAME.fd == -1) \
1121 caglobals.tcp.NAME.port = 0; \
1122 caglobals.tcp.NAME.fd = CACreateAcceptSocket(FAMILY, &caglobals.tcp.NAME); \
1124 CHECKFD(caglobals.tcp.NAME.fd);
1126 void CATCPInitializeSocket()
1128 #ifndef __WITH_TLS__
1129 NEWSOCKET(AF_INET, ipv4);
1131 NEWSOCKET(AF_INET, ipv4s);
1134 //TODO Enable once TizenRT supports IPv6
1136 #ifndef __WITH_TLS__
1137 NEWSOCKET(AF_INET6, ipv6);
1139 NEWSOCKET(AF_INET6, ipv6s);
1142 #ifndef __WITH_TLS__
1143 OIC_LOG_V(DEBUG, TAG, "IPv4 socket fd=%d, port=%d",
1144 caglobals.tcp.ipv4.fd, caglobals.tcp.ipv4.port);
1145 OIC_LOG_V(DEBUG, TAG, "IPv6 socket fd=%d, port=%d",
1146 caglobals.tcp.ipv6.fd, caglobals.tcp.ipv6.port);
1148 OIC_LOG_V(DEBUG, TAG, "IPv4 secure socket fd=%d, port=%d",
1149 caglobals.tcp.ipv4s.fd, caglobals.tcp.ipv4s.port);
1150 OIC_LOG_V(DEBUG, TAG, "IPv6 secure socket fd=%d, port=%d",
1151 caglobals.tcp.ipv6s.fd, caglobals.tcp.ipv6s.port);
1154 #endif // DISABLE_TCP_SERVER
1156 CAResult_t CATCPStartServer(const ca_thread_pool_t threadPool)
1158 oc_mutex_lock(g_mutexObjectList);
1159 if (caglobals.tcp.started)
1161 oc_mutex_unlock(g_mutexObjectList);
1162 OIC_LOG(INFO, TAG, "Adapter is started already");
1163 return CA_STATUS_OK;
1166 g_threadPool = threadPool;
1168 if (!caglobals.tcp.ipv4tcpenabled)
1170 caglobals.tcp.ipv4tcpenabled = true; // only needed to run CA tests
1172 if (!caglobals.tcp.ipv6tcpenabled)
1174 caglobals.tcp.ipv6tcpenabled = true; // only needed to run CA tests
1177 caglobals.tcp.terminate = false;
1178 if (!caglobals.tcp.svrlist)
1180 caglobals.tcp.svrlist = u_arraylist_create();
1183 #ifndef DISABLE_TCP_SERVER
1184 if (caglobals.server)
1186 CATCPInitializeSocket();
1191 // create pipe for fast shutdown
1192 CAInitializePipe(caglobals.tcp.shutdownFds);
1193 CHECKFD(caglobals.tcp.shutdownFds[0]);
1194 CHECKFD(caglobals.tcp.shutdownFds[1]);
1196 // create pipe for connection event
1197 CAInitializePipe(caglobals.tcp.connectionFds);
1198 CHECKFD(caglobals.tcp.connectionFds[0]);
1199 CHECKFD(caglobals.tcp.connectionFds[1]);
1201 CAResult_t res = CA_STATUS_OK;
1203 res = ca_thread_pool_add_task(g_threadPool, CAReceiveHandler, NULL, NULL);
1205 res = ca_thread_pool_add_task(g_threadPool, CAReceiveHandler, NULL, NULL,
1206 "IoT_TCPReceive", CONFIG_IOTIVITY_TCPRECEIVE_PTHREAD_STACKSIZE);
1208 if (CA_STATUS_OK != res)
1210 oc_mutex_unlock(g_mutexObjectList);
1211 OIC_LOG(ERROR, TAG, "thread_pool_add_task failed");
1216 caglobals.tcp.started = true;
1217 oc_mutex_unlock(g_mutexObjectList);
1219 OIC_LOG(INFO, TAG, "CAReceiveHandler thread started successfully.");
1220 return CA_STATUS_OK;
1223 void CATCPStopServer()
1225 oc_mutex_lock(g_mutexObjectList);
1226 if (caglobals.tcp.terminate)
1228 oc_mutex_unlock(g_mutexObjectList);
1229 OIC_LOG(INFO, TAG, "Adapter is not enabled");
1233 // set terminate flag.
1234 caglobals.tcp.terminate = true;
1236 oc_mutex_lock(g_mutexSend);
1237 oc_cond_signal(g_condSend);
1238 oc_mutex_unlock(g_mutexSend);
1241 if (caglobals.tcp.started)
1243 oc_cond_wait(g_condObjectList, g_mutexObjectList);
1244 caglobals.tcp.started = false;
1248 // close accept socket.
1249 #ifndef __WITH_TLS__
1253 CLOSE_SOCKET(ipv4s);
1254 CLOSE_SOCKET(ipv6s);
1257 if (caglobals.tcp.connectionFds[1] != OC_INVALID_SOCKET)
1259 close(caglobals.tcp.connectionFds[1]);
1260 caglobals.tcp.connectionFds[1] = OC_INVALID_SOCKET;
1262 if (caglobals.tcp.connectionFds[0] != OC_INVALID_SOCKET)
1264 close(caglobals.tcp.connectionFds[0]);
1265 caglobals.tcp.connectionFds[0] = OC_INVALID_SOCKET;
1268 if (caglobals.tcp.shutdownFds[1] != OC_INVALID_SOCKET)
1270 close(caglobals.tcp.shutdownFds[1]);
1271 caglobals.tcp.shutdownFds[1] = OC_INVALID_SOCKET;
1272 // receive thread will stop immediately
1274 if (caglobals.tcp.started)
1276 oc_cond_wait(g_condObjectList, g_mutexObjectList);
1277 caglobals.tcp.started = false;
1279 if (caglobals.tcp.shutdownFds[0] != OC_INVALID_SOCKET)
1281 close(caglobals.tcp.shutdownFds[0]);
1282 caglobals.tcp.shutdownFds[0] = OC_INVALID_SOCKET;
1285 oc_mutex_unlock(g_mutexObjectList);
1287 CATCPDisconnectAll();
1290 OIC_LOG(INFO, TAG, "Adapter terminated successfully");
1293 void CATCPSetPacketReceiveCallback(CATCPPacketReceivedCallback callback)
1295 g_packetReceivedCallback = callback;
1298 void CATCPSetConnectionChangedCallback(CATCPConnectionHandleCallback connHandler)
1300 g_connectionCallback = connHandler;
1303 size_t CACheckPayloadLengthFromHeader(const void *data, size_t dlen)
1305 VERIFY_NON_NULL_RET(data, TAG, "data", -1);
1307 coap_transport_t transport = coap_get_tcp_header_type_from_initbyte(
1308 ((unsigned char *)data)[0] >> 4);
1310 coap_pdu_t *pdu = coap_new_pdu2(transport, dlen);
1313 OIC_LOG(ERROR, TAG, "outpdu is null");
1314 OIC_LOG_V(ERROR, TAG, "data length: %zu", dlen);
1318 int ret = coap_pdu_parse2((unsigned char *) data, dlen, pdu, transport);
1321 OIC_LOG(ERROR, TAG, "pdu parse failed");
1322 coap_delete_pdu(pdu);
1326 size_t payloadLen = 0;
1327 size_t headerSize = coap_get_tcp_header_length_for_transport(transport);
1328 OIC_LOG_V(DEBUG, TAG, "headerSize : %zu, pdu length : %d",
1329 headerSize, pdu->length);
1330 if (pdu->length > headerSize)
1332 payloadLen = (unsigned char *) pdu->hdr + pdu->length - pdu->data;
1340 static ssize_t sendData(const CAEndpoint_t *endpoint, const void *data,
1341 size_t dlen, const char *fam)
1343 OIC_LOG_V(INFO, TAG, "The length of data that needs to be sent is %zu bytes", dlen);
1345 // #1. find a session info from list.
1346 CASocketFd_t sockFd = CAGetSocketFDFromEndpoint(endpoint);
1347 if (OC_INVALID_SOCKET == sockFd)
1349 // if there is no connection info, connect to remote device.
1350 sockFd = CAConnectTCPSession(endpoint);
1351 if (OC_INVALID_SOCKET == sockFd)
1353 OIC_LOG(ERROR, TAG, "Failed to create tcp session object");
1358 // #2. send data to remote device.
1359 ssize_t remainLen = dlen;
1360 unsigned int sendRetryTime = 1;
1364 ssize_t len = send(sockFd, data, remainLen, MSG_DONTWAIT | MSG_NOSIGNAL);
1366 ssize_t len = send(sockFd, data, remainLen, MSG_DONTWAIT);
1370 if (EWOULDBLOCK != errno && EAGAIN != errno)
1372 OIC_LOG_V(ERROR, TAG, "unicast ipv4tcp sendTo failed: %s", strerror(errno));
1373 CALogSendStateInfo(endpoint->adapter, endpoint->addr, endpoint->port,
1374 len, false, strerror(errno));
1378 // re-trying send after 10, 20, 40, 80, 160 and 320 milliseconds
1379 if (sendRetryTime > 32)
1384 unsigned int waitTime = sendRetryTime * 10 * MILLISECONDS_PER_SECOND;
1385 OIC_LOG_V(WARNING, TAG, "send blocked. trying send after %u microseconds", waitTime);
1387 oc_mutex_lock(g_mutexSend);
1388 oc_cond_wait_for(g_condSend, g_mutexSend, waitTime);
1389 oc_mutex_unlock(g_mutexSend);
1391 oc_mutex_lock(g_mutexObjectList);
1392 if (caglobals.tcp.terminate)
1394 oc_mutex_unlock(g_mutexObjectList);
1397 oc_mutex_unlock(g_mutexObjectList);
1399 sendRetryTime = (sendRetryTime << 1);
1406 } while (remainLen > 0);
1411 OIC_LOG_V(INFO, TAG, "unicast %stcp sendTo is successful: %zu bytes", fam, dlen);
1412 CALogSendStateInfo(endpoint->adapter, endpoint->addr, endpoint->port,
1417 ssize_t CATCPSendData(CAEndpoint_t *endpoint, const void *data, size_t datalen)
1419 VERIFY_NON_NULL_RET(endpoint, TAG, "endpoint is NULL", -1);
1420 VERIFY_NON_NULL_RET(data, TAG, "data is NULL", -1);
1422 if (caglobals.tcp.ipv6tcpenabled && (endpoint->flags & CA_IPV6))
1424 return sendData(endpoint, data, datalen, "ipv6");
1426 if (caglobals.tcp.ipv4tcpenabled && (endpoint->flags & CA_IPV4))
1428 return sendData(endpoint, data, datalen, "ipv4");
1431 OIC_LOG(ERROR, TAG, "Not supported transport flags");
1435 CAResult_t CAGetTCPInterfaceInformation(CAEndpoint_t **info, uint32_t *size)
1437 VERIFY_NON_NULL(info, TAG, "info is NULL");
1438 VERIFY_NON_NULL(size, TAG, "size is NULL");
1440 return CA_NOT_SUPPORTED;
1443 CASocketFd_t CAConnectTCPSession(const CAEndpoint_t *endpoint)
1445 VERIFY_NON_NULL_RET(endpoint, TAG, "endpoint is NULL", OC_INVALID_SOCKET);
1447 // #1. create TCP server object
1448 CATCPSessionInfo_t *svritem = (CATCPSessionInfo_t *) OICCalloc(1, sizeof (*svritem));
1451 OIC_LOG(ERROR, TAG, "Out of memory");
1452 return OC_INVALID_SOCKET;
1454 memcpy(svritem->sep.endpoint.addr, endpoint->addr, sizeof(svritem->sep.endpoint.addr));
1455 svritem->sep.endpoint.adapter = endpoint->adapter;
1456 svritem->sep.endpoint.port = endpoint->port;
1457 svritem->sep.endpoint.flags = endpoint->flags;
1458 svritem->sep.endpoint.ifindex = endpoint->ifindex;
1459 svritem->state = CONNECTING;
1460 svritem->isClient = true;
1462 // Allocate message buffer
1463 svritem->tlsdata = (unsigned char*) OICCalloc(TLS_DATA_MAX_SIZE, sizeof(unsigned char));
1464 if (!svritem->tlsdata)
1466 OIC_LOG(ERROR, TAG, "Out of memory");
1468 return OC_INVALID_SOCKET;
1471 // #2. add TCP connection info to list
1472 oc_mutex_lock(g_mutexObjectList);
1473 if (caglobals.tcp.svrlist)
1475 bool res = u_arraylist_add(caglobals.tcp.svrlist, svritem);
1478 OIC_LOG(ERROR, TAG, "u_arraylist_add failed.");
1480 OICFree(svritem->tlsdata);
1482 oc_mutex_unlock(g_mutexObjectList);
1483 return OC_INVALID_SOCKET;
1486 oc_mutex_unlock(g_mutexObjectList);
1488 // #3. create the socket and connect to TCP server
1489 int family = (svritem->sep.endpoint.flags & CA_IPV6) ? AF_INET6 : AF_INET;
1490 if (CA_STATUS_OK != CATCPCreateSocket(family, svritem))
1492 return OC_INVALID_SOCKET;
1495 // #4. pass the connection information to CA Common Layer.
1496 if (g_connectionCallback)
1498 g_connectionCallback(&(svritem->sep.endpoint), true, svritem->isClient);
1504 CAResult_t CADisconnectTCPSession(size_t index)
1506 CATCPSessionInfo_t *removedData = u_arraylist_remove(caglobals.tcp.svrlist, index);
1509 OIC_LOG(DEBUG, TAG, "there is no data to be removed");
1510 return CA_STATUS_OK;
1513 // close the socket and remove session info in list.
1514 if (removedData->fd >= 0)
1516 shutdown(removedData->fd, SHUT_RDWR);
1517 close(removedData->fd);
1518 removedData->fd = -1;
1519 removedData->state = (CONNECTED == removedData->state) ?
1520 DISCONNECTED : removedData->state;
1522 // pass the connection information to CA Common Layer.
1523 if (g_connectionCallback && DISCONNECTED == removedData->state)
1525 g_connectionCallback(&(removedData->sep.endpoint), false, removedData->isClient);
1528 OICFree(removedData->data);
1529 removedData->data = NULL;
1531 OICFree(removedData->tlsdata);
1532 removedData->tlsdata = NULL;
1534 OICFree(removedData);
1537 OIC_LOG(DEBUG, TAG, "data is removed from session list");
1539 #ifndef DISABLE_TCP_SERVER
1540 if (caglobals.server && MAX_CONNECTION_COUNTS == u_arraylist_length(caglobals.tcp.svrlist) + 1)
1542 CATCPInitializeSocket();
1546 return CA_STATUS_OK;
1549 void CATCPDisconnectAll()
1551 OIC_LOG(DEBUG, TAG, "IN - CATCPDisconnectAll");
1553 oc_mutex_lock(g_mutexObjectList);
1555 uint32_t length = u_arraylist_length(caglobals.tcp.svrlist);
1556 for (ssize_t index = length; index > 0; index--)
1558 // disconnect session from remote device.
1559 CADisconnectTCPSession(index - 1);
1562 u_arraylist_destroy(caglobals.tcp.svrlist);
1563 caglobals.tcp.svrlist = NULL;
1565 oc_mutex_unlock(g_mutexObjectList);
1568 CAcloseSslConnectionAll(CA_ADAPTER_TCP);
1571 OIC_LOG(DEBUG, TAG, "OUT - CATCPDisconnectAll");
1574 CATCPSessionInfo_t *CAGetTCPSessionInfoFromEndpoint(const CAEndpoint_t *endpoint, size_t *index)
1576 VERIFY_NON_NULL_RET(endpoint, TAG, "endpoint is NULL", NULL);
1577 VERIFY_NON_NULL_RET(index, TAG, "index is NULL", NULL);
1579 OIC_LOG_V(DEBUG, TAG, "Looking for [%s:%d]", endpoint->addr, endpoint->port);
1581 // get connection info from list
1582 uint32_t length = u_arraylist_length(caglobals.tcp.svrlist);
1583 for (size_t i = 0; i < length; i++)
1585 CATCPSessionInfo_t *svritem = (CATCPSessionInfo_t *) u_arraylist_get(
1586 caglobals.tcp.svrlist, i);
1592 if (!strncmp(svritem->sep.endpoint.addr, endpoint->addr,
1593 sizeof(svritem->sep.endpoint.addr))
1594 && (svritem->sep.endpoint.port == endpoint->port)
1595 && (svritem->sep.endpoint.flags & endpoint->flags))
1597 OIC_LOG(DEBUG, TAG, "Found in session list");
1603 OIC_LOG(DEBUG, TAG, "Session not found");
1607 CASocketFd_t CAGetSocketFDFromEndpoint(const CAEndpoint_t *endpoint)
1609 VERIFY_NON_NULL_RET(endpoint, TAG, "endpoint is NULL", OC_INVALID_SOCKET);
1611 OIC_LOG_V(DEBUG, TAG, "Looking for [%s:%d]", endpoint->addr, endpoint->port);
1613 // get connection info from list.
1614 oc_mutex_lock(g_mutexObjectList);
1615 uint32_t length = u_arraylist_length(caglobals.tcp.svrlist);
1616 for (size_t i = 0; i < length; i++)
1618 CATCPSessionInfo_t *svritem = (CATCPSessionInfo_t *) u_arraylist_get(
1619 caglobals.tcp.svrlist, i);
1625 if (!strncmp(svritem->sep.endpoint.addr, endpoint->addr,
1626 sizeof(svritem->sep.endpoint.addr))
1627 && (svritem->sep.endpoint.port == endpoint->port)
1628 && (svritem->sep.endpoint.flags & endpoint->flags))
1630 oc_mutex_unlock(g_mutexObjectList);
1631 OIC_LOG(DEBUG, TAG, "Found in session list");
1636 oc_mutex_unlock(g_mutexObjectList);
1637 OIC_LOG(DEBUG, TAG, "Session not found");
1638 return OC_INVALID_SOCKET;
1641 CATCPSessionInfo_t *CAGetSessionInfoFromFD(int fd, size_t *index)
1644 // check from the last item.
1645 CATCPSessionInfo_t *svritem = NULL;
1646 uint32_t length = u_arraylist_length(caglobals.tcp.svrlist);
1647 for (size_t i = 0; i < length; i++)
1649 svritem = (CATCPSessionInfo_t *) u_arraylist_get(caglobals.tcp.svrlist, i);
1651 if (svritem && svritem->fd == fd)
1654 oc_mutex_unlock(g_mutexObjectList);
1663 static CATCPSessionInfo_t *CAGetSessionInfoFromFDAsOwner(int fd, size_t *index)
1665 CATCPSessionInfo_t *svritem = NULL;
1666 uint32_t length = u_arraylist_length(caglobals.tcp.svrlist);
1667 for (size_t i = 0; i < length; i++)
1669 svritem = (CATCPSessionInfo_t *) u_arraylist_get(caglobals.tcp.svrlist, i);
1671 if (svritem && svritem->fd == fd)
1681 CAResult_t CASearchAndDeleteTCPSession(const CAEndpoint_t *endpoint)
1683 oc_mutex_lock(g_mutexObjectList);
1685 CAResult_t result = CA_STATUS_OK;
1687 CATCPSessionInfo_t *svritem = CAGetTCPSessionInfoFromEndpoint(endpoint, &index);
1690 result = CADisconnectTCPSession(index);
1691 if (CA_STATUS_OK != result)
1693 OIC_LOG_V(ERROR, TAG, "CADisconnectTCPSession failed, result[%d]", result);
1697 oc_mutex_unlock(g_mutexObjectList);
1701 void CATCPCloseInProgressConnections()
1703 OIC_LOG(INFO, TAG, "IN - CATCPCloseInProgressConnections");
1705 oc_mutex_lock(g_mutexObjectList);
1707 uint32_t length = u_arraylist_length(caglobals.tcp.svrlist);
1708 for (size_t index = 0; index < length; index++)
1710 CATCPSessionInfo_t *svritem = (CATCPSessionInfo_t *) u_arraylist_get(
1711 caglobals.tcp.svrlist, index);
1717 // Session which are connecting state
1718 if (svritem->fd >= 0 && svritem->state == CONNECTING)
1720 shutdown(svritem->fd, SHUT_RDWR);
1723 svritem->state = DISCONNECTED;
1727 oc_mutex_unlock(g_mutexObjectList);
1729 OIC_LOG(INFO, TAG, "OUT - CATCPCloseInProgressConnections");
1732 size_t CAGetTotalLengthFromHeader(const unsigned char *recvBuffer)
1734 OIC_LOG(DEBUG, TAG, "IN - CAGetTotalLengthFromHeader");
1736 coap_transport_t transport = coap_get_tcp_header_type_from_initbyte(
1737 ((unsigned char *)recvBuffer)[0] >> 4);
1738 size_t optPaylaodLen = coap_get_length_from_header((unsigned char *)recvBuffer,
1740 size_t headerLen = coap_get_tcp_header_length((unsigned char *)recvBuffer);
1742 OIC_LOG_V(DEBUG, TAG, "option/paylaod length [%zu]", optPaylaodLen);
1743 OIC_LOG_V(DEBUG, TAG, "header length [%zu]", headerLen);
1744 OIC_LOG_V(DEBUG, TAG, "total data length [%zu]", headerLen + optPaylaodLen);
1746 OIC_LOG(DEBUG, TAG, "OUT - CAGetTotalLengthFromHeader");
1747 return headerLen + optPaylaodLen;
1750 void CATCPSetErrorHandler(CATCPErrorHandleCallback errorHandleCallback)
1752 g_tcpErrorHandler = errorHandleCallback;