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MacTCP Help!!! -> Solution
- To: firstname.lastname@example.org (Macintosh Common Lisp)
- Subject: MacTCP Help!!! -> Solution
- From: email@example.com (Guillaume Cartier)
- Date: Wed, 8 Apr 92 19:47:55 -0400
After lots of hard work, I finaly found the solution to my problem.
As usual, the solution is trivial when you finally have it. Arrrrr!@#$%
But when you don't have a clue where to look, it can take you very far.
(it took me as far as finding a bug in mips computers FTP daemon!)
The solution is a very simple ~15 characters improvement to MCL's
"MacTCP.lisp" file. If you where experiencing the same problem, just
contact me and I will send you the fix.
Here was the statement of the problem:
> I am trying to implement the FTP protocol in MCL...
> Could be useful to lots of people, but I am stuck. :-(
> The FTP protocol specifies that when you want to transfert a
> file, you have to:
> 1) listen on a specified port for a data connection
> 2) send the file transfert command.
> I can easily do both, the problem is that to do 1) I have to
> do a TCPPassiveOpen which returns only when the connection is
> established. But I can't send the command that will tell the
> server to establish the file transfer connection since I am
> now stuck in the TCPPassiveOpen!!! And if I send the command
> first, then I get an error telling me that no one is listening!!!
>Thanks for any help.
>PS: I managed to make everything work using two MCL at the same time!
> Seems a bit exagerated though...
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