/// <summary>
/// Writes the message with the writer.
/// </summary>
/// <param name="message"></param>
/// <param name="cancellationToken"></param>
/// <returns></returns>
async Task WriteMessage(RnetMessage message, CancellationToken cancellationToken)
{
Contract.Requires<ArgumentNullException>(message != null);
Contract.Requires<InvalidOperationException>(writer != null);
using (await write.LockAsync(cancellationToken))
message.Write(writer);
}
