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>
29 #include <arpa/inet.h>
30 #include <netinet/in.h>
35 #include <sys/socket.h>
36 #include <netinet/in.h>
40 #include "catcpinterface.h"
42 #include "caadapterutils.h"
44 #include "oic_malloc.h"
45 #include "oic_string.h"
48 * Logging tag for module name.
50 #define TAG "OIC_CA_TCP_SERVER"
53 * Server port number for local test.
55 #define SERVER_PORT 8000
58 * Maximum CoAP over TCP header length
59 * to know the total data length.
61 #define TCP_MAX_HEADER_LEN 6
64 * Mutex to synchronize device object list.
66 static ca_mutex g_mutexObjectList = NULL;
69 * Conditional mutex to synchronize.
71 static ca_cond g_condObjectList = NULL;
74 * Maintains the callback to be notified when data received from remote device.
76 static CATCPPacketReceivedCallback g_packetReceivedCallback = NULL;
79 * Error callback to update error in TCP.
81 static CATCPErrorHandleCallback g_tcpErrorHandler = NULL;
84 * Connected Callback to pass the connection information to RI.
86 static CATCPConnectionHandleCallback g_connectionCallback = NULL;
88 static CAResult_t CATCPCreateMutex();
89 static void CATCPDestroyMutex();
90 static CAResult_t CATCPCreateCond();
91 static void CATCPDestroyCond();
92 static int CACreateAcceptSocket(int family, CASocket_t *sock);
93 static void CAAcceptConnection(CATransportFlags_t flag, CASocket_t *sock);
94 static void CAFindReadyMessage();
95 static void CASelectReturned(fd_set *readFds, int ret);
96 static void CAReceiveMessage(int fd);
97 static void CAReceiveHandler(void *data);
98 static int CATCPCreateSocket(int family, CATCPSessionInfo_t *tcpServerInfo);
100 #define CHECKFD(FD) \
101 if (FD > caglobals.tcp.maxfd) \
102 caglobals.tcp.maxfd = FD;
104 static void CATCPDestroyMutex()
106 if (g_mutexObjectList)
108 ca_mutex_free(g_mutexObjectList);
109 g_mutexObjectList = NULL;
113 static CAResult_t CATCPCreateMutex()
115 if (!g_mutexObjectList)
117 g_mutexObjectList = ca_mutex_new();
118 if (!g_mutexObjectList)
120 OIC_LOG(ERROR, TAG, "Failed to created mutex!");
121 return CA_STATUS_FAILED;
128 static void CATCPDestroyCond()
130 if (g_condObjectList)
132 ca_cond_free(g_condObjectList);
133 g_condObjectList = NULL;
137 static CAResult_t CATCPCreateCond()
139 if (!g_condObjectList)
141 g_condObjectList = ca_cond_new();
142 if (!g_condObjectList)
144 OIC_LOG(ERROR, TAG, "Failed to created cond!");
145 return CA_STATUS_FAILED;
151 static void CAReceiveHandler(void *data)
154 OIC_LOG(DEBUG, TAG, "IN - CAReceiveHandler");
156 while (!caglobals.tcp.terminate)
158 CAFindReadyMessage();
161 ca_mutex_lock(g_mutexObjectList);
162 ca_cond_signal(g_condObjectList);
163 ca_mutex_unlock(g_mutexObjectList);
165 OIC_LOG(DEBUG, TAG, "OUT - CAReceiveHandler");
168 static void CAFindReadyMessage()
171 struct timeval timeout = { .tv_sec = caglobals.tcp.selectTimeout };
175 if (-1 != caglobals.tcp.ipv4.fd)
177 FD_SET(caglobals.tcp.ipv4.fd, &readFds);
179 if (-1 != caglobals.tcp.ipv6.fd)
181 FD_SET(caglobals.tcp.ipv6.fd, &readFds);
183 if (-1 != caglobals.tcp.shutdownFds[0])
185 FD_SET(caglobals.tcp.shutdownFds[0], &readFds);
187 if (-1 != caglobals.tcp.connectionFds[0])
189 FD_SET(caglobals.tcp.connectionFds[0], &readFds);
192 uint32_t length = u_arraylist_length(caglobals.tcp.svrlist);
193 for (size_t i = 0; i < length; i++)
195 CATCPSessionInfo_t *svritem =
196 (CATCPSessionInfo_t *) u_arraylist_get(caglobals.tcp.svrlist, i);
197 if (svritem && 0 <= svritem->fd)
199 FD_SET(svritem->fd, &readFds);
203 int ret = select(caglobals.tcp.maxfd + 1, &readFds, NULL, NULL, &timeout);
205 if (caglobals.tcp.terminate)
207 OIC_LOG_V(DEBUG, TAG, "Packet receiver Stop request received.");
214 OIC_LOG_V(FATAL, TAG, "select error %s", strerror(errno));
219 CASelectReturned(&readFds, ret);
222 static void CASelectReturned(fd_set *readFds, int ret)
224 VERIFY_NON_NULL_VOID(readFds, TAG, "readFds is NULL");
226 if (caglobals.tcp.ipv4.fd != -1 && FD_ISSET(caglobals.tcp.ipv4.fd, readFds))
228 CAAcceptConnection(CA_IPV4, &caglobals.tcp.ipv4);
231 else if (caglobals.tcp.ipv6.fd != -1 && FD_ISSET(caglobals.tcp.ipv6.fd, readFds))
233 CAAcceptConnection(CA_IPV6, &caglobals.tcp.ipv6);
236 else if (-1 != caglobals.tcp.connectionFds[0] &&
237 FD_ISSET(caglobals.tcp.connectionFds[0], readFds))
239 // new connection was created from remote device.
240 // exit the function to update read file descriptor.
241 char buf[MAX_ADDR_STR_SIZE_CA] = {0};
242 ssize_t len = read(caglobals.tcp.connectionFds[0], buf, sizeof (buf));
247 OIC_LOG_V(DEBUG, TAG, "Received new connection event with [%s]", buf);
248 FD_CLR(caglobals.tcp.connectionFds[0], readFds);
251 else if (-1 != caglobals.tcp.connectionFds[0] &&
252 FD_ISSET(caglobals.tcp.connectionFds[0], readFds))
254 // new connection was created from remote device.
255 // exit the function to update read file descriptor.
256 char buf[MAX_ADDR_STR_SIZE_CA] = {0};
257 ssize_t len = read(caglobals.tcp.connectionFds[0], buf, sizeof (buf));
262 OIC_LOG_V(DEBUG, TAG, "Received new connection event with [%s]", buf);
263 FD_CLR(caglobals.tcp.connectionFds[0], readFds);
268 uint32_t length = u_arraylist_length(caglobals.tcp.svrlist);
269 for (size_t i = 0; i < length; i++)
271 CATCPSessionInfo_t *svritem =
272 (CATCPSessionInfo_t *) u_arraylist_get(caglobals.tcp.svrlist, i);
273 if (svritem && svritem->fd >= 0)
275 if (FD_ISSET(svritem->fd, readFds))
277 CAReceiveMessage(svritem->fd);
278 FD_CLR(svritem->fd, readFds);
285 static void CAAcceptConnection(CATransportFlags_t flag, CASocket_t *sock)
287 VERIFY_NON_NULL_VOID(sock, TAG, "sock is NULL");
289 struct sockaddr_storage clientaddr;
290 socklen_t clientlen = sizeof (struct sockaddr_in);
292 int sockfd = accept(sock->fd, (struct sockaddr *)&clientaddr, &clientlen);
295 CATCPSessionInfo_t *svritem =
296 (CATCPSessionInfo_t *) OICCalloc(1, sizeof (*svritem));
299 OIC_LOG(ERROR, TAG, "Out of memory");
304 svritem->fd = sockfd;
305 svritem->sep.endpoint.flags = flag;
306 CAConvertAddrToName((struct sockaddr_storage *)&clientaddr, clientlen,
307 (char *) &svritem->sep.endpoint.addr, &svritem->sep.endpoint.port);
309 ca_mutex_lock(g_mutexObjectList);
310 bool result = u_arraylist_add(caglobals.tcp.svrlist, svritem);
313 OIC_LOG(ERROR, TAG, "u_arraylist_add failed.");
316 ca_mutex_unlock(g_mutexObjectList);
319 ca_mutex_unlock(g_mutexObjectList);
325 static void CAReceiveMessage(int fd)
327 // #1. get remote device information from file descriptor.
329 CATCPSessionInfo_t *svritem = CAGetSessionInfoFromFD(fd, &index);
332 OIC_LOG(ERROR, TAG, "there is no connection information in list");
336 // #2. get already allocated memory size.
337 size_t bufSize = (svritem->totalDataLen == 0) ? TCP_MAX_HEADER_LEN : svritem->totalDataLen;
338 if (!svritem->recvData)
340 svritem->recvData = (unsigned char *) OICCalloc(1, bufSize);
341 if (!svritem->recvData)
343 OIC_LOG(ERROR, TAG, "out of memory");
344 CADisconnectTCPSession(svritem, index);
349 // #3. receive data from remote device.
350 ssize_t recvLen = recv(fd, svritem->recvData + svritem->recvDataLen,
351 bufSize - svritem->recvDataLen, 0);
354 if(EWOULDBLOCK != errno)
356 OIC_LOG_V(ERROR, TAG, "Recvfrom failed %s", strerror(errno));
357 CADisconnectTCPSession(svritem, index);
361 svritem->recvDataLen += recvLen;
363 // #4. get actual data length from coap over tcp header.
364 if (!svritem->totalDataLen)
366 coap_transport_type transport = coap_get_tcp_header_type_from_initbyte(
367 ((unsigned char *) svritem->recvData)[0] >> 4);
369 size_t headerLen = coap_get_tcp_header_length_for_transport(transport);
370 if (svritem->recvDataLen >= headerLen)
372 svritem->totalDataLen = CAGetTotalLengthFromHeader(
373 (unsigned char *) svritem->recvData);
374 bufSize = svritem->totalDataLen;
375 unsigned char *newBuf = OICRealloc(svritem->recvData, bufSize);
378 OIC_LOG(ERROR, TAG, "out of memory");
379 CADisconnectTCPSession(svritem, index);
382 svritem->recvData = newBuf;
386 // #5. pass the received data information to upper layer.
387 if ((svritem->totalDataLen == svritem->recvDataLen) && g_packetReceivedCallback)
389 svritem->sep.endpoint.adapter = CA_ADAPTER_TCP;
390 g_packetReceivedCallback(&svritem->sep, svritem->recvData, svritem->recvDataLen);
391 OIC_LOG_V(DEBUG, TAG, "total received data len:%d", svritem->recvDataLen);
393 // initialize data info to receive next message.
394 OICFree(svritem->recvData);
395 svritem->recvData = NULL;
396 svritem->recvDataLen = 0;
397 svritem->totalDataLen = 0;
403 static void CAWakeUpForReadFdsUpdate(const char *host)
405 if (caglobals.tcp.connectionFds[1] != -1)
410 len = write(caglobals.tcp.connectionFds[1], host, strlen(host));
411 } while ((len == -1) && (errno == EINTR));
413 if ((len == -1) && (errno != EINTR) && (errno != EPIPE))
415 OIC_LOG_V(DEBUG, TAG, "write failed: %s", strerror(errno));
420 static CAResult_t CATCPConvertNameToAddr(int family, const char *host, uint16_t port,
421 struct sockaddr_storage *sockaddr)
423 struct addrinfo *addrs = NULL;
424 struct addrinfo hints = { .ai_family = family,
425 .ai_protocol = IPPROTO_TCP,
426 .ai_socktype = SOCK_STREAM,
427 .ai_flags = AI_NUMERICHOST };
429 int r = getaddrinfo(host, NULL, &hints, &addrs);
434 OIC_LOG_V(ERROR, TAG, "getaddrinfo failed: errno %s", strerror(errno));
438 OIC_LOG_V(ERROR, TAG, "getaddrinfo failed: %s", gai_strerror(r));
441 return CA_STATUS_FAILED;
443 // assumption: in this case, getaddrinfo will only return one addrinfo
444 // or first is the one we want.
445 if (addrs[0].ai_family == AF_INET6)
447 memcpy(sockaddr, addrs[0].ai_addr, sizeof (struct sockaddr_in6));
448 ((struct sockaddr_in6 *)sockaddr)->sin6_port = htons(port);
452 memcpy(sockaddr, addrs[0].ai_addr, sizeof (struct sockaddr_in));
453 ((struct sockaddr_in *)sockaddr)->sin_port = htons(port);
459 static int CATCPCreateSocket(int family, CATCPSessionInfo_t *svritem)
461 // #1. create tcp socket.
462 int fd = socket(family, SOCK_STREAM, IPPROTO_TCP);
465 OIC_LOG_V(ERROR, TAG, "create socket failed: %s", strerror(errno));
469 // #2. convert address from string to binary.
470 struct sockaddr_storage sa = { .ss_family = family };
471 CAResult_t res = CATCPConvertNameToAddr(family, svritem->sep.endpoint.addr,
472 svritem->sep.endpoint.port, &sa);
473 if (CA_STATUS_OK != res)
479 // #3. set socket length.
481 if (sa.ss_family == AF_INET6)
483 struct sockaddr_in6 *sock6 = (struct sockaddr_in6 *)&sa;
484 if (!sock6->sin6_scope_id)
486 sock6->sin6_scope_id = svritem->sep.endpoint.interface;
488 socklen = sizeof(struct sockaddr_in6);
492 socklen = sizeof(struct sockaddr_in);
495 // #4. connect to remote server device.
496 if (connect(fd, (struct sockaddr *)&sa, socklen) < 0)
498 OIC_LOG_V(ERROR, TAG, "failed to connect socket, %s", strerror(errno));
503 OIC_LOG(DEBUG, TAG, "connect socket success");
504 CAWakeUpForReadFdsUpdate(svritem->sep.endpoint.addr);
508 static int CACreateAcceptSocket(int family, CASocket_t *sock)
510 VERIFY_NON_NULL_RET(sock, TAG, "sock", -1);
514 OIC_LOG(DEBUG, TAG, "accept socket created already");
519 struct sockaddr_storage server = { .ss_family = family };
521 int fd = socket(family, SOCK_STREAM, IPPROTO_TCP);
524 OIC_LOG(ERROR, TAG, "Failed to create socket");
528 if (family == AF_INET6)
530 // the socket is re‐stricted to sending and receiving IPv6 packets only.
532 if (-1 == setsockopt(fd, IPPROTO_IPV6, IPV6_V6ONLY, &on, sizeof (on)))
534 OIC_LOG_V(ERROR, TAG, "IPV6_V6ONLY failed: %s", strerror(errno));
537 ((struct sockaddr_in6 *)&server)->sin6_port = htons(sock->port);
538 socklen = sizeof (struct sockaddr_in6);
542 ((struct sockaddr_in *)&server)->sin_port = htons(sock->port);
543 socklen = sizeof (struct sockaddr_in);
547 if (-1 == setsockopt(fd, SOL_SOCKET, SO_REUSEADDR, &reuse, sizeof(reuse)))
549 OIC_LOG(ERROR, TAG, "setsockopt SO_REUSEADDR");
553 if (-1 == bind(fd, (struct sockaddr *)&server, socklen))
555 OIC_LOG_V(ERROR, TAG, "bind socket failed: %s", strerror(errno));
559 if (listen(fd, caglobals.tcp.listenBacklog) != 0)
561 OIC_LOG(ERROR, TAG, "listen() error");
565 if (!sock->port) // return the assigned port
567 if (-1 == getsockname(fd, (struct sockaddr *)&server, &socklen))
569 OIC_LOG_V(ERROR, TAG, "getsockname failed: %s", strerror(errno));
572 sock->port = ntohs(family == AF_INET6 ?
573 ((struct sockaddr_in6 *)&server)->sin6_port :
574 ((struct sockaddr_in *)&server)->sin_port);
587 static void CAInitializePipe(int *fds)
592 ret = fcntl(fds[0], F_GETFD);
595 ret = fcntl(fds[0], F_SETFD, ret|FD_CLOEXEC);
599 ret = fcntl(fds[1], F_GETFD);
603 ret = fcntl(fds[1], F_SETFD, ret|FD_CLOEXEC);
613 OIC_LOG_V(ERROR, TAG, "pipe failed: %s", strerror(errno));
618 #define NEWSOCKET(FAMILY, NAME) \
619 caglobals.tcp.NAME.fd = CACreateAcceptSocket(FAMILY, &caglobals.tcp.NAME); \
620 if (caglobals.tcp.NAME.fd == -1) \
622 caglobals.tcp.NAME.port = 0; \
623 caglobals.tcp.NAME.fd = CACreateAcceptSocket(FAMILY, &caglobals.tcp.NAME); \
625 CHECKFD(caglobals.tcp.NAME.fd);
627 CAResult_t CATCPStartServer(const ca_thread_pool_t threadPool)
629 if (caglobals.tcp.started)
634 if (!caglobals.tcp.ipv4tcpenabled)
636 caglobals.tcp.ipv4tcpenabled = true; // only needed to run CA tests
638 if (!caglobals.tcp.ipv6tcpenabled)
640 caglobals.tcp.ipv6tcpenabled = true; // only needed to run CA tests
643 CAResult_t res = CATCPCreateMutex();
644 if (CA_STATUS_OK == res)
646 res = CATCPCreateCond();
648 if (CA_STATUS_OK != res)
650 OIC_LOG(ERROR, TAG, "failed to create mutex/cond");
654 ca_mutex_lock(g_mutexObjectList);
655 if (!caglobals.tcp.svrlist)
657 caglobals.tcp.svrlist = u_arraylist_create();
659 ca_mutex_unlock(g_mutexObjectList);
661 if (caglobals.server)
663 NEWSOCKET(AF_INET, ipv4);
664 NEWSOCKET(AF_INET6, ipv6);
665 OIC_LOG_V(DEBUG, TAG, "IPv4 socket fd=%d, port=%d",
666 caglobals.tcp.ipv4.fd, caglobals.tcp.ipv4.port);
667 OIC_LOG_V(DEBUG, TAG, "IPv6 socket fd=%d, port=%d",
668 caglobals.tcp.ipv6.fd, caglobals.tcp.ipv6.port);
671 // create pipe for fast shutdown
672 CAInitializePipe(caglobals.tcp.shutdownFds);
673 CHECKFD(caglobals.tcp.shutdownFds[0]);
674 CHECKFD(caglobals.tcp.shutdownFds[1]);
676 // create pipe for connection event
677 CAInitializePipe(caglobals.tcp.connectionFds);
678 CHECKFD(caglobals.tcp.connectionFds[0]);
679 CHECKFD(caglobals.tcp.connectionFds[1]);
681 caglobals.tcp.terminate = false;
682 res = ca_thread_pool_add_task(threadPool, CAReceiveHandler, NULL);
683 if (CA_STATUS_OK != res)
685 OIC_LOG(ERROR, TAG, "thread_pool_add_task failed");
688 OIC_LOG(DEBUG, TAG, "CAReceiveHandler thread started successfully.");
690 caglobals.tcp.started = true;
694 void CATCPStopServer()
697 ca_mutex_lock(g_mutexObjectList);
699 // set terminate flag
700 caglobals.tcp.terminate = true;
702 if (caglobals.tcp.shutdownFds[1] != -1)
704 close(caglobals.tcp.shutdownFds[1]);
705 // receive thread will stop immediately
708 if (caglobals.tcp.connectionFds[1] != -1)
710 close(caglobals.tcp.connectionFds[1]);
713 if (caglobals.tcp.started)
715 ca_cond_wait(g_condObjectList, g_mutexObjectList);
717 caglobals.tcp.started = false;
720 ca_mutex_unlock(g_mutexObjectList);
722 if (-1 != caglobals.tcp.ipv4.fd)
724 close(caglobals.tcp.ipv4.fd);
725 caglobals.tcp.ipv4.fd = -1;
728 if (-1 != caglobals.tcp.ipv6.fd)
730 close(caglobals.tcp.ipv6.fd);
731 caglobals.tcp.ipv6.fd = -1;
734 CATCPDisconnectAll();
739 void CATCPSetPacketReceiveCallback(CATCPPacketReceivedCallback callback)
741 g_packetReceivedCallback = callback;
744 void CATCPSetConnectionChangedCallback(CATCPConnectionHandleCallback connHandler)
746 g_connectionCallback = connHandler;
749 static size_t CACheckPayloadLength(const void *data, size_t dlen)
751 VERIFY_NON_NULL_RET(data, TAG, "data", -1);
753 coap_transport_type transport = coap_get_tcp_header_type_from_initbyte(
754 ((unsigned char *)data)[0] >> 4);
756 coap_pdu_t *pdu = coap_new_pdu(transport, dlen);
759 OIC_LOG(ERROR, TAG, "outpdu is null");
763 int ret = coap_pdu_parse((unsigned char *) data, dlen, pdu, transport);
766 OIC_LOG(ERROR, TAG, "pdu parse failed");
767 coap_delete_pdu(pdu);
771 size_t payloadLen = 0;
772 size_t headerSize = coap_get_tcp_header_length_for_transport(transport);
773 OIC_LOG_V(DEBUG, TAG, "headerSize : %d, pdu length : %d",
774 headerSize, pdu->length);
775 if (pdu->length > headerSize)
777 payloadLen = (unsigned char *) pdu->hdr + pdu->length - pdu->data;
785 static void sendData(const CAEndpoint_t *endpoint, const void *data,
786 size_t dlen, const char *fam)
788 // #1. get TCP Server object from list
790 CATCPSessionInfo_t *svritem = CAGetTCPSessionInfoFromEndpoint(endpoint, &index);
793 // if there is no connection info, connect to TCP Server
794 svritem = CAConnectTCPSession(endpoint);
797 OIC_LOG(ERROR, TAG, "Failed to create TCP server object");
798 if (g_tcpErrorHandler)
800 g_tcpErrorHandler(endpoint, data, dlen, CA_SEND_FAILED);
806 // #2. check payload length
807 size_t payloadLen = CACheckPayloadLength(data, dlen);
808 // if payload length is zero, disconnect from TCP server
811 OIC_LOG(DEBUG, TAG, "payload length is zero, disconnect from remote device");
812 CADisconnectTCPSession(svritem, index);
816 // #3. check connection state
819 // if file descriptor value is wrong, remove TCP Server info from list
820 OIC_LOG(ERROR, TAG, "Failed to connect to TCP server");
821 CADisconnectTCPSession(svritem, index);
822 if (g_tcpErrorHandler)
824 g_tcpErrorHandler(endpoint, data, dlen, CA_SEND_FAILED);
829 // #4. send data to TCP Server
830 ssize_t remainLen = dlen;
833 ssize_t len = send(svritem->fd, data, remainLen, 0);
836 if (EWOULDBLOCK != errno)
838 OIC_LOG_V(ERROR, TAG, "unicast ipv4tcp sendTo failed: %s", strerror(errno));
839 if (g_tcpErrorHandler)
841 g_tcpErrorHandler(endpoint, data, dlen, CA_SEND_FAILED);
849 } while (remainLen > 0);
851 OIC_LOG_V(INFO, TAG, "unicast %stcp sendTo is successful: %zu bytes", fam, dlen);
854 void CATCPSendData(CAEndpoint_t *endpoint, const void *data, uint32_t datalen,
857 VERIFY_NON_NULL_VOID(endpoint, TAG, "endpoint is NULL");
858 VERIFY_NON_NULL_VOID(data, TAG, "data is NULL");
862 if (caglobals.tcp.ipv6tcpenabled && (endpoint->flags & CA_IPV6))
864 sendData(endpoint, data, datalen, "ipv6");
866 if (caglobals.tcp.ipv4tcpenabled && (endpoint->flags & CA_IPV4))
868 sendData(endpoint, data, datalen, "ipv4");
873 CAResult_t CAGetTCPInterfaceInformation(CAEndpoint_t **info, uint32_t *size)
875 VERIFY_NON_NULL(info, TAG, "info is NULL");
876 VERIFY_NON_NULL(size, TAG, "size is NULL");
878 return CA_NOT_SUPPORTED;
881 CATCPSessionInfo_t *CAConnectTCPSession(const CAEndpoint_t *endpoint)
883 VERIFY_NON_NULL_RET(endpoint, TAG, "endpoint is NULL", NULL);
885 // #1. create TCP server object
886 CATCPSessionInfo_t *svritem = (CATCPSessionInfo_t *) OICCalloc(1, sizeof (*svritem));
889 OIC_LOG(ERROR, TAG, "Out of memory");
892 memcpy(svritem->sep.endpoint.addr, endpoint->addr, sizeof(svritem->sep.endpoint.addr));
893 svritem->sep.endpoint.port = endpoint->port;
894 svritem->sep.endpoint.flags = endpoint->flags;
895 svritem->sep.endpoint.interface = endpoint->interface;
897 // #2. create the socket and connect to TCP server
898 int family = (svritem->sep.endpoint.flags & CA_IPV6) ? AF_INET6 : AF_INET;
899 int fd = CATCPCreateSocket(family, svritem);
906 // #3. add TCP connection info to list
908 ca_mutex_lock(g_mutexObjectList);
909 if (caglobals.tcp.svrlist)
911 bool res = u_arraylist_add(caglobals.tcp.svrlist, svritem);
914 OIC_LOG(ERROR, TAG, "u_arraylist_add failed.");
917 ca_mutex_unlock(g_mutexObjectList);
921 ca_mutex_unlock(g_mutexObjectList);
925 // pass the connection information to CA Common Layer.
926 if (g_connectionCallback)
928 g_connectionCallback(svritem->sep.endpoint.addr, svritem->sep.endpoint.port, true);
934 CAResult_t CADisconnectTCPSession(CATCPSessionInfo_t *svritem, size_t index)
936 VERIFY_NON_NULL(svritem, TAG, "svritem is NULL");
938 ca_mutex_lock(g_mutexObjectList);
940 // close the socket and remove TCP connection info in list
941 if (svritem->fd >= 0)
945 u_arraylist_remove(caglobals.tcp.svrlist, index);
946 OICFree(svritem->recvData);
948 // pass the connection information to CA Common Layer.
949 if (g_connectionCallback)
951 g_connectionCallback(svritem->sep.endpoint.addr, svritem->sep.endpoint.port, false);
955 ca_mutex_unlock(g_mutexObjectList);
960 void CATCPDisconnectAll()
962 ca_mutex_lock(g_mutexObjectList);
963 uint32_t length = u_arraylist_length(caglobals.tcp.svrlist);
965 CATCPSessionInfo_t *svritem = NULL;
966 for (size_t i = 0; i < length; i++)
968 svritem = (CATCPSessionInfo_t *) u_arraylist_get(caglobals.tcp.svrlist, i);
969 if (svritem && svritem->fd >= 0)
971 shutdown(svritem->fd, SHUT_RDWR);
973 OICFree(svritem->recvData);
976 u_arraylist_destroy(caglobals.tcp.svrlist);
977 ca_mutex_unlock(g_mutexObjectList);
980 CATCPSessionInfo_t *CAGetTCPSessionInfoFromEndpoint(const CAEndpoint_t *endpoint, size_t *index)
982 VERIFY_NON_NULL_RET(endpoint, TAG, "endpoint is NULL", NULL);
983 VERIFY_NON_NULL_RET(index, TAG, "index is NULL", NULL);
985 // get connection info from list
986 uint32_t length = u_arraylist_length(caglobals.tcp.svrlist);
987 for (size_t i = 0; i < length; i++)
989 CATCPSessionInfo_t *svritem = (CATCPSessionInfo_t *) u_arraylist_get(
990 caglobals.tcp.svrlist, i);
996 if (!strncmp(svritem->sep.endpoint.addr, endpoint->addr,
997 sizeof(svritem->sep.endpoint.addr))
998 && (svritem->sep.endpoint.port == endpoint->port)
999 && (svritem->sep.endpoint.flags & endpoint->flags))
1009 CATCPSessionInfo_t *CAGetSessionInfoFromFD(int fd, size_t *index)
1011 ca_mutex_lock(g_mutexObjectList);
1013 // check from the last item.
1014 CATCPSessionInfo_t *svritem = NULL;
1015 uint32_t length = u_arraylist_length(caglobals.tcp.svrlist);
1016 for (size_t i = 0; i < length; i++)
1018 svritem = (CATCPSessionInfo_t *) u_arraylist_get(caglobals.tcp.svrlist, i);
1020 if (svritem && svritem->fd == fd)
1023 ca_mutex_unlock(g_mutexObjectList);
1028 ca_mutex_unlock(g_mutexObjectList);
1033 size_t CAGetTotalLengthFromHeader(const unsigned char *recvBuffer)
1035 OIC_LOG(DEBUG, TAG, "IN - CAGetTotalLengthFromHeader");
1037 coap_transport_type transport = coap_get_tcp_header_type_from_initbyte(
1038 ((unsigned char *)recvBuffer)[0] >> 4);
1039 size_t optPaylaodLen = coap_get_length_from_header((unsigned char *)recvBuffer,
1041 size_t headerLen = coap_get_tcp_header_length((unsigned char *)recvBuffer);
1043 OIC_LOG_V(DEBUG, TAG, "option/paylaod length [%d]", optPaylaodLen);
1044 OIC_LOG_V(DEBUG, TAG, "header length [%d]", headerLen);
1045 OIC_LOG_V(DEBUG, TAG, "total data length [%d]", headerLen + optPaylaodLen);
1047 OIC_LOG(DEBUG, TAG, "OUT - CAGetTotalLengthFromHeader");
1048 return headerLen + optPaylaodLen;
1051 void CATCPSetErrorHandler(CATCPErrorHandleCallback errorHandleCallback)
1053 g_tcpErrorHandler = errorHandleCallback;