[Twisted-Python] Multiple transmissions via SMTPClient

exarkun at twistedmatrix.com exarkun at twistedmatrix.com
Sun May 27 12:39:21 MDT 2012

On 23 May, 07:10 pm, jasonjwwilliams at gmail.com wrote:
>Hi Guys,
>I've been banging my head on this for a few days so I thought I'd ping
>folks here. Been trying to modify twisted.mail.smtp.ESMTPClient to
>allow the sending of more than one message over a single TCP
>connection. I've changed the  behavior of smtpState_data() so that it
>sets the next state to smtpState_from if there is another message to
>send, and this seems to work unless there's an error returned by the

Are you sure you need to do this?  The behavior is already to go back 
from "from" after "data" (by way of a RSET command).
>In this case the connection is still closed on the client side
>after smtpState_msgSent, and I need to suppress this. The subsequent
>message should still be sent on the open TCP connection error or not,
>according to my needs, however I'm having a heck of time tracking down
>where the disconnection is occurring.
>My current code (with debugging statements) is here:
>Any help is greatly appreciated. This client is being used to run
>functional tests.

The method referred to by the attribute `_failresponse` is called if the 
server responds with an unexpected code.  Set that to a different 
handler, to handle failures from the server differently.


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