/// <summary>
/// Opens the connection.
/// </summary>
public async Task Open(CancellationToken cancellationToken)
{
if (State != RnetConnectionState.Closed)
throw new RnetConnectionException("Connection is not closed.");
// establish connection
await Connect(cancellationToken);
// obtain reader
reader = GetReader();
if (reader == null)
throw new RnetException("Unable to obtain RnetReader.");
// obtain writer
writer = GetWriter();
if (writer == null)
throw new RnetException("Unable to obtain RnetWriter.");
OnStateChanged(new RnetConnectionStateEventArgs(State));
}
/// <summary>
/// Closes the connection.
/// </summary>
public async Task Close(CancellationToken cancellationToken)
{
Contract.Requires<RnetConnectionException>(State == RnetConnectionState.Open, "Connection is not open.");
Contract.Ensures(reader == null);
Contract.Ensures(writer == null);
// disconnect
await Disconnect(cancellationToken);
reader = null;
writer = null;
OnStateChanged(new RnetConnectionStateEventArgs(State));
}
