On Mon, 13 Dec 2010, Thomas Chavanis wrote:
I use libcurl 7.21.1 in my FTPClient software and when I use this client
under Mac OS 10.5 (Leopard) with severals server I get the following debug
message and the connection failed:
"got positive EPSV response, but can't connect. Disabling EPSV".
Can you show us a full VERBOSE enabled trace of the connection? It is supposed
to move on and try a "regular" PASV after the above failure.
But when I use the same client under Mac OS 10.6 (Snow Leopard), I didn't
get the previous message but curl_easy_perform never stop (like a freeze)
and so the connection to the server failed.
... and a VERBOSE trace for this would also be useful for anlysis purposes.
I understand that EPSV command is not always supported by server so I
deactivate it by setting CURLOPT_FTP_USE_EPSV to zero
(http://curl.haxx.se/libcurl/c/libcurl-tutorial.html : FTP Peculiarities We
Need).
Right, and ESPV is not only a problem to old servers but also often not
understood by firewalls and what not that sit between you and the FTP server.
But the thing I don't understand is why a client under 10.5 and 10.6 have
different behavior?
That's not libcurl's fault, that's something you should ask Apple about.
Do you have some differences between Leopard and Snow Leopard in libcurl?
Not that I know of. We have no code that explicitly checks for 10.5 vs 10.6
but I don't know if configure detects something differently between those two
versions. I personally never use Macs.
Do you have some know bugs under Snow Leopard which didn't exist under
Leopard?
Nope.
--
/ daniel.haxx.se
-------------------------------------------------------------------
List admin: http://cool.haxx.se/list/listinfo/curl-library
Etiquette: http://curl.haxx.se/mail/etiquette.html
