public void Connect()
{
try
{
if (this.Connection.Connect())
{
ConnectionThread.Start();
}
else
{
throw new Exception("Attempt failed");
}
}
catch
{
throw new Exception("Connection to MSA failed");
}
}
/// <inheritdoc/>
public bool Login(string defaultSchema, string user, string password, DatabaseEventCallback callback)
{
try {
// Do some handshaking,
MemoryStream bout = new MemoryStream();
BinaryWriter output = new BinaryWriter(bout, Encoding.ASCII);
// Write output the magic number
output.Write(0x0ced007);
// Write output the driver version
Version clientVersion = ClientVersion;
output.Write(clientVersion.Major);
output.Write(clientVersion.Minor);
output.Write(initialDatabase);
byte[] arr = bout.ToArray();
SendCommand(arr, 0, arr.Length);
byte[] response = ReceiveCommand(0);
int ack = ByteBuffer.ReadInt4(response, 0);
if (ack == ProtocolConstants.Acknowledgement) {
// Is there anything more to Read?
if (response.Length > 4 && response[4] == 1) {
// Yes so Read the server version
int serverMajorVersion = ByteBuffer.ReadInt4(response, 5);
int serverMinorVersion = ByteBuffer.ReadInt4(response, 9);
serverVersion = new Version(serverMajorVersion, serverMinorVersion);
}
// Send the username and password to the server
// SECURITY: username/password sent as plain text. This is okay
// if we are connecting to localhost, but not good if we connecting
// over the internet. We could encrypt this, but it would probably
// be better if we WriteByte the entire stream through an encyption
// protocol.
bout = new MemoryStream();
output = new BinaryWriter(bout);
output.Write(defaultSchema);
output.Write(user);
output.Write(password);
arr = bout.ToArray();
SendCommand(arr, 0, arr.Length);
response = ReceiveCommand(0);
int result = ByteBuffer.ReadInt4(response, 0);
if (result == ProtocolConstants.UserAuthenticationPassed) {
// Set the callback,
databaseCallback = callback;
// User authentication passed so we successfully logged input now.
connectionThread = new ConnectionThread(this);
connectionThread.Start();
return true;
}
if (result == ProtocolConstants.UserAuthenticationFailed)
throw new DataException("User Authentication failed.");
if (result == ProtocolConstants.DatabaseNotFound)
throw new DataException("The database specified was not found.");
throw new DataException("Unexpected response.");
}
if (ack == ProtocolConstants.DatabaseNotFound)
throw new DataException("The database was not found.");
throw new DataException("No acknowledgement received from server.");
} catch (IOException e) {
LogException(e);
throw new DataException("IOException: " + e.Message);
}
}
