Inherits EventHandler. Inherited by SmtpAuth, SmtpData, SmtpHelo, SmtpHelp, SmtpMailFrom, SmtpNoop, SmtpQuit, SmtpRcptTo, SmtpRset and SmtpStarttls.
The SmtpCommand models a single SMTP command (including "unknown command"). Some of them are subclasses.
An SmtpCommand must be able to parse its arguments and execute itself.
Constructs an empty command for the server s.
Creates an SmtpCommand object to handle command within the context of server. server cannot be null.
This function rejects commands issued while the server is shutting down. If a command passes this hurdle, it will be executed to completion, even if the server starts shutting down. This implies that if we're receiving a message body when the shutdown command is given, we will receive and inject the message, as RFC 1047 suggests.
Returns true if this command has finished its work, and false otherwise.
Outputs the response for this command, including the number and trailing CRLF.
Records that this command is finished and tells the SMTP server to emit responses and generally get on with life. The response may be sent, and SMTP::execute() should not call execute() again.
Returns true if this command has completed with a non-error response code, true if it hasn't completed, and false if it has completed with an error code. Toggles to true again after emitResponses().
Records that the (three-digit) response code for this command is r, that enh is either null (the default) or an enhanced status code as defined in RFC 2034, and that s is to be one of the text lines sent. s should not have a trailing CRLF.
If r is 0, the existing response code is not changed. Similarly, if enh is null, the existing enhanced respons code is not changed.
Returns a pointer to the SMTP server for this command.
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