QuitCommand.cs

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namespace System.Net.Mail;
 
internal static class QuitCommand
{
    private static void PrepareCommand(SmtpConnection conn)
    {
        if (conn.IsStreamOpen)
        {
            throw new InvalidOperationException(System.SR.SmtpDataStreamOpen);
        }
        conn.BufferBuilder.Append(SmtpCommands.Quit);
    }
 
    internal static void Send(SmtpConnection conn)
    {
        PrepareCommand(conn);
        conn.Flush();
    }
}