コード例 #1
0
/*receives hello ack, opens secure channel*/
UA_StatusCode
processACKResponseAsync(void *application, UA_Connection *connection,
                         UA_ByteString *chunk) {
    UA_Client *client = (UA_Client*)application;

    /* Decode the message */
    size_t offset = 0;
    UA_TcpMessageHeader messageHeader;
    UA_TcpAcknowledgeMessage ackMessage;
    client->connectStatus = UA_TcpMessageHeader_decodeBinary (chunk, &offset,
                                                              &messageHeader);
    client->connectStatus |= UA_TcpAcknowledgeMessage_decodeBinary(
            chunk, &offset, &ackMessage);
    if (client->connectStatus != UA_STATUSCODE_GOOD) {
        UA_LOG_INFO(&client->config.logger, UA_LOGCATEGORY_NETWORK,
                     "Decoding ACK message failed");
        return client->connectStatus;
    }
    UA_LOG_DEBUG(&client->config.logger, UA_LOGCATEGORY_NETWORK, "Received ACK message");

    client->connectStatus =
        UA_Connection_processHELACK(connection, &client->config.localConnectionConfig,
                                    (const UA_ConnectionConfig*)&ackMessage);
    if(client->connectStatus != UA_STATUSCODE_GOOD)
        return client->connectStatus;

    client->state = UA_CLIENTSTATE_CONNECTED;

    /* Open a SecureChannel. TODO: Select with endpoint  */
    client->channel.connection = &client->connection;
    client->connectStatus = openSecureChannelAsync(client/*, false*/);
    return client->connectStatus;
}
コード例 #2
0
ファイル: ua_client.c プロジェクト: joerg555/open62541
static UA_StatusCode HelAckHandshake(UA_Client *c) {
    UA_TcpMessageHeader messageHeader;
    messageHeader.messageTypeAndFinal = UA_MESSAGETYPEANDFINAL_HELF;

    UA_TcpHelloMessage hello;
    UA_String_copy(&c->endpointUrl, &hello.endpointUrl); /* must be less than 4096 bytes */

    UA_Connection *conn = &c->connection;
    hello.maxChunkCount = conn->localConf.maxChunkCount;
    hello.maxMessageSize = conn->localConf.maxMessageSize;
    hello.protocolVersion = conn->localConf.protocolVersion;
    hello.receiveBufferSize = conn->localConf.recvBufferSize;
    hello.sendBufferSize = conn->localConf.sendBufferSize;

    UA_ByteString message;
    UA_StatusCode retval;
    retval = c->connection.getSendBuffer(&c->connection, c->connection.remoteConf.recvBufferSize, &message);
    if(retval != UA_STATUSCODE_GOOD)
        return retval;

    size_t offset = 8;
    retval |= UA_TcpHelloMessage_encodeBinary(&hello, &message, &offset);
    messageHeader.messageSize = offset;
    offset = 0;
    retval |= UA_TcpMessageHeader_encodeBinary(&messageHeader, &message, &offset);
    UA_TcpHelloMessage_deleteMembers(&hello);
    if(retval != UA_STATUSCODE_GOOD) {
        c->connection.releaseSendBuffer(&c->connection, &message);
        return retval;
    }

    message.length = messageHeader.messageSize;
    retval = c->connection.send(&c->connection, &message);
    if(retval != UA_STATUSCODE_GOOD) {
        UA_LOG_DEBUG(c->logger, UA_LOGCATEGORY_NETWORK, "Sending HEL failed");
        return retval;
    }
    UA_LOG_DEBUG(c->logger, UA_LOGCATEGORY_NETWORK, "Sent HEL message");

    UA_ByteString reply;
    UA_ByteString_init(&reply);
    do {
        retval = c->connection.recv(&c->connection, &reply, c->config.timeout);
        if(retval != UA_STATUSCODE_GOOD) {
            UA_LOG_DEBUG(c->logger, UA_LOGCATEGORY_NETWORK, "Receiving ACK message failed");
            return retval;
        }
    } while(!reply.data);

    offset = 0;
    UA_TcpMessageHeader_decodeBinary(&reply, &offset, &messageHeader);
    UA_TcpAcknowledgeMessage ackMessage;
    retval = UA_TcpAcknowledgeMessage_decodeBinary(&reply, &offset, &ackMessage);
    UA_ByteString_deleteMembers(&reply);
    if(retval != UA_STATUSCODE_GOOD) {
        UA_LOG_DEBUG(c->logger, UA_LOGCATEGORY_NETWORK, "Decoding ACK message failed");
        return retval;
    }

    UA_LOG_DEBUG(c->logger, UA_LOGCATEGORY_NETWORK, "Received ACK message");
    conn->remoteConf.maxChunkCount = ackMessage.maxChunkCount;
    conn->remoteConf.maxMessageSize = ackMessage.maxMessageSize;
    conn->remoteConf.protocolVersion = ackMessage.protocolVersion;
    conn->remoteConf.recvBufferSize = ackMessage.receiveBufferSize;
    conn->remoteConf.sendBufferSize = ackMessage.sendBufferSize;
    conn->state = UA_CONNECTION_ESTABLISHED;
    return UA_STATUSCODE_GOOD;
}