Constructing MIME message without loading message stream

[Kris Kennaway]

I would like to MIME encode a message from a large file without first
loading the file into memory. Assume the file has been pre-encoded on
disk (actually I am using encode_7or8bit, so the encoding should be
null). Is there a way to construct the flattened MIME message such that
data is streamed from the file as needed instead of being resident in
memory? Do I have to subclass the MIMEBase class myself?

Kris

[Diez B. Roggisch]

Kris Kennaway schrieb:

I would like to MIME encode a message from a large file without first
loading the file into memory. Assume the file has been pre-encoded on
disk (actually I am using encode_7or8bit, so the encoding should be
null). Is there a way to construct the flattened MIME message such that
data is streamed from the file as needed instead of being resident in
memory? Do I have to subclass the MIMEBase class myself?

I don't know what you are after here - but I *do* know that anything
above 10MB or so is most probably not transferable using mail, as MTAs
impose limits on message-sizes. Or in other words: usually, whatever you
want to encode should fit in memory as the network is limiting you.

If you insist, I guess the stdlib isn't much of help - try implementing
a SMTP-server using twisted. But this is just a guess.

Diez

[Kris Kennaway]

Diez B. Roggisch wrote:

Kris Kennaway schrieb:

>I would like to MIME encode a message from a large file without first
loading the file into memory. Assume the file has been pre-encoded on
disk (actually I am using encode_7or8bit, so the encoding should be
null). Is there a way to construct the flattened MIME message such
that data is streamed from the file as needed instead of being
resident in memory? Do I have to subclass the MIMEBase class myself?

I don't know what you are after here - but I *do* know that anything
above 10MB or so is most probably not transferable using mail, as MTAs
impose limits on message-sizes. Or in other words: usually, whatever you
want to encode should fit in memory as the network is limiting you.

MIME encoding is used for other things than emails.

Kris