/* we have no networklayer. instead, attach the reusable buffer to the handle */
UA_Connection
UA_ClientConnectionTCP(UA_ConnectionConfig localConf, const char *endpointUrl, UA_Logger logger) {
UA_Connection connection;
UA_Connection_init(&connection);
connection.localConf = localConf;
//socket_set_nonblocking(connection.sockfd);
connection.send = socket_write;
connection.recv = socket_recv;
connection.close = ClientNetworkLayerClose;
connection.getSendBuffer = ClientNetworkLayerGetBuffer;
connection.releaseSendBuffer = ClientNetworkLayerReleaseBuffer;
connection.releaseRecvBuffer = ClientNetworkLayerReleaseBuffer;
size_t urlLength = strlen(endpointUrl);
if(urlLength < 11 || urlLength >= 512) {
UA_LOG_WARNING((*logger), UA_LOGCATEGORY_NETWORK, "Server url size invalid");
return connection;
}
if(strncmp(endpointUrl, "opc.tcp://", 10) != 0) {
UA_LOG_WARNING((*logger), UA_LOGCATEGORY_NETWORK, "Server url does not begin with opc.tcp://");
return connection;
}
UA_UInt16 portpos = 9;
UA_UInt16 port;
for(port = 0; portpos < urlLength-1; portpos++) {
if(endpointUrl[portpos] == ':') {
char *endPtr = NULL;
unsigned long int tempulong = strtoul(&endpointUrl[portpos+1], &endPtr, 10);
if (ERANGE != errno && tempulong < UINT16_MAX && endPtr != &endpointUrl[portpos+1])
port = (UA_UInt16)tempulong;
break;
}
}
if(port == 0) {
UA_LOG_WARNING((*logger), UA_LOGCATEGORY_NETWORK, "Port invalid");
return connection;
}
char hostname[512];
for(int i=10; i < portpos; i++)
hostname[i-10] = endpointUrl[i];
hostname[portpos-10] = 0;
#ifdef _WIN32
WORD wVersionRequested;
WSADATA wsaData;
wVersionRequested = MAKEWORD(2, 2);
WSAStartup(wVersionRequested, &wsaData);
if((connection.sockfd = socket(PF_INET, SOCK_STREAM,0)) == (UA_Int32)INVALID_SOCKET) {
#else
if((connection.sockfd = socket(AF_INET, SOCK_STREAM, 0)) == -1) {
#endif
UA_LOG_WARNING((*logger), UA_LOGCATEGORY_NETWORK, "Could not create socket");
return connection;
}
struct hostent *server = gethostbyname(hostname);
if(!server) {
UA_LOG_WARNING((*logger), UA_LOGCATEGORY_NETWORK, "DNS lookup of %s failed", hostname);
return connection;
}
struct sockaddr_in server_addr;
memset(&server_addr, 0, sizeof(server_addr));
memcpy((char *)&server_addr.sin_addr.s_addr, (char *)server->h_addr_list[0], server->h_length);
server_addr.sin_family = AF_INET;
server_addr.sin_port = htons(port);
connection.state = UA_CONNECTION_OPENING;
if(connect(connection.sockfd, (struct sockaddr *) &server_addr, sizeof(server_addr)) < 0) {
ClientNetworkLayerClose(&connection);
UA_LOG_WARNING((*logger), UA_LOGCATEGORY_NETWORK, "Connection failed");
return connection;
}
#ifdef SO_NOSIGPIPE
int val = 1;
if(setsockopt(connection.sockfd, SOL_SOCKET, SO_NOSIGPIPE, (void*)&val, sizeof(val)) < 0) {
UA_LOG_WARNING((*logger), UA_LOGCATEGORY_NETWORK, "Couldn't set SO_NOSIGPIPE");
return connection;
}
#endif
return connection;
}
/* we have no networklayer. instead, attach the reusable buffer to the handle */
UA_Connection ClientNetworkLayerTCP_connect(UA_ConnectionConfig localConf, char *endpointUrl,
UA_Logger *logger) {
UA_Connection connection;
UA_Connection_init(&connection);
connection.localConf = localConf;
#ifndef UA_MULTITHREADING
connection.handle = UA_ByteString_new();
UA_ByteString_newMembers(connection.handle, localConf.maxMessageSize);
#endif
size_t urlLength = strlen(endpointUrl);
if(urlLength < 11 || urlLength >= 512) {
UA_LOG_WARNING((*logger), UA_LOGCATEGORY_COMMUNICATION, "Server url size invalid");
return connection;
}
if(strncmp(endpointUrl, "opc.tcp://", 10) != 0) {
UA_LOG_WARNING((*logger), UA_LOGCATEGORY_COMMUNICATION, "Server url does not begin with opc.tcp://");
return connection;
}
UA_UInt16 portpos = 9;
UA_UInt16 port = 0;
for(;portpos < urlLength-1; portpos++) {
if(endpointUrl[portpos] == ':') {
port = atoi(&endpointUrl[portpos+1]);
break;
}
}
if(port == 0) {
UA_LOG_WARNING((*logger), UA_LOGCATEGORY_COMMUNICATION, "Port invalid");
return connection;
}
char hostname[512];
for(int i=10; i < portpos; i++)
hostname[i-10] = endpointUrl[i];
hostname[portpos-10] = 0;
#ifdef _WIN32
WORD wVersionRequested;
WSADATA wsaData;
wVersionRequested = MAKEWORD(2, 2);
WSAStartup(wVersionRequested, &wsaData);
if((connection.sockfd = socket(PF_INET, SOCK_STREAM,0)) == (UA_Int32)INVALID_SOCKET) {
#else
if((connection.sockfd = socket(AF_INET, SOCK_STREAM, 0)) == -1) {
#endif
UA_LOG_WARNING((*logger), UA_LOGCATEGORY_COMMUNICATION, "Could not create socket");
return connection;
}
struct hostent *server = gethostbyname(hostname);
if(server == NULL) {
UA_LOG_WARNING((*logger), UA_LOGCATEGORY_COMMUNICATION, "DNS lookup of %s failed", hostname);
return connection;
}
struct sockaddr_in server_addr;
memset(&server_addr, 0, sizeof(server_addr));
memcpy((char *)&server_addr.sin_addr.s_addr, (char *)server->h_addr_list[0], server->h_length);
server_addr.sin_family = AF_INET;
server_addr.sin_port = htons(port);
connection.state = UA_CONNECTION_OPENING;
if(connect(connection.sockfd, (struct sockaddr *) &server_addr, sizeof(server_addr)) < 0) {
ClientNetworkLayerClose(&connection);
UA_LOG_WARNING((*logger), UA_LOGCATEGORY_COMMUNICATION, "Connection failed");
return connection;
}
#ifdef SO_NOSIGPIPE
int val = 1;
if (setsockopt(connection.sockfd, SOL_SOCKET, SO_NOSIGPIPE, (void*)&val, sizeof(val)) < 0) {
UA_LOG_WARNING((*logger), UA_LOGCATEGORY_COMMUNICATION, "Couldn't set SO_NOSIGPIPE");
}
#endif
//socket_set_nonblocking(connection.sockfd);
connection.write = socket_write;
connection.recv = socket_recv;
connection.close = ClientNetworkLayerClose;
connection.getBuffer = ClientNetworkLayerGetBuffer;
connection.releaseBuffer = ClientNetworkLayerReleaseBuffer;
return connection;
}
