Bliako,

Your response looks difficult to implement, but seems to come nearest to understanding the situation. In my case, I've been running an example TeX file on this (via copy/paste into a form field, not file upload--though I'm on an internal LAN), and the script invokes the XeLaTeX command twice in order to produce a proper TOC. The server returns the PDF in about 6-7 seconds for a 330+ page book. This is quite tolerable, and is in no danger of timeouts. This is a fairly straightforward dictionary-style layout, without images, etc.--just text. Because it had returned the results so promptly, I had not even really grasped why people were giving me answers for long-running processes; but perhaps I should not assume that my example would be representative for all use-cases. FWIW, I have created this functionality on a dedicated VM, with full install of LaTeX components, fonts, etc. specifically for this. Perhaps this is why it runs so quickly, though I had not chosen to use a separate VM for purposes of speed, but rather to keep the LaTeX server configuration separate from my other CGI routines.

I'm still puzzled by the thought that it is possible to send two files in a single base64-encoded lump, to be dissected client-side with JavaScript. If I could do this, though, it would definitely solve the problem. I'll have to look into this more. The way the script presently runs, the user receives the PDF and the server no longer needs to keep it. No need for tracking the time window to keep a particular file in case of a subsequent user request, and, in fact, the files do not need to be uniquely named (though I'm adding a timestamp to the filename as a courtesy to the user for versioning purposes).

Looking at the link you included, I'm left wondering how to indicate a separation between two or more files or segments in the blob data returned. I think I'll have to experiment a little with this, because if it works, it would do what I want. Thank you.

Blessings,

~Polyglot~

In reply to Re^2: Can two separate responses be sent to the client's browser from Perl, such as via fork{}? by Polyglot
in thread Can two separate responses be sent to the client's browser from Perl, such as via fork{}? by Polyglot

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