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#61 Partial message construction
See Tcllib FR #531531 and Tcllib FR #527114
for supplemental information.
It would be convenient for the pop3 server
if the mime package could construct/copy
partial messages containing a specified number
of lines of the body. The implementation of
the pop3 TOP command would benefit greatly from
this.
I know that I could construct the whole message
in memory and then simply cut of the transfer
after the specified number of lines but this
means that the system will consume a lot of memory
when it comes to big messages.
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certainly you an do something like
mime::initialize -string "whatYouGotFromPOP"
but the issue, i guess, is what to do if it's a
multipart...
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Marshall, this is not about what a user got from pop,
but about the innards of a pop3 server.
Scenario:
User contacts pop3 server, opens a mailbox, then
asks for the first 10 lines of the message 5
(TOP command). The pop3 server executes a callback
to get the mail to send. The result of that
callback is a mime token. Now I want to use an
extended "mime::copymessage" or now "copypartial"
command in the pop server to construct and send
the partial message over the pop3 connection to the
user who requested the partial mail.
Right now I am using "mime::buildmessage" and a
split/lrange/join combo to get the partial message.
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Note that Tcllib FR #527114 now has docs attached, so the
interface between pop3 server and its storage backend is
now specified, and definitely a mime token (This makes
things like dot-stuffing much easier for me, as I can rely
on the functionality in mime and don't have to reimplement
it again).
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i guess i'd have to understand how the mime token is being
constructed in order to figure out the best way to do
this. for example, i don't know what mime::buildmessage is.
certainly, we could add a switch to mime::copymessage to
accomplish what you want...
/mtr
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mime::buildmessage is like copymesage, but constructs the
final message in memory, as a string instead of writing
directly to a channel.
I will think more about this.