Subject: libssh2 takes long time to connect to CoreFTP's SFTP service

libssh2 takes long time to connect to CoreFTP's SFTP service

From: Xu, Qiang (FXSGSC) <Qiang.Xu_at_fujixerox.com>
Date: Wed, 17 Feb 2010 17:27:25 +0800

Hi, list:

Recently, I found a problem with libssh2, when it tries to connect to SFTP service provided by CoreFTP (http://www.coreftp.com/server/).

Please look at the following test.
=========================================
qxu_at_durian(pts/3):~/opensrc/libssh2-1.2/example/simple[150]$ date
Wed Feb 17 16:54:33 SGT 2010
qxu_at_durian(pts/3):~/opensrc/libssh2-1.2/example/simple[151]$ ./sftpdir 13.xxx.xxx.xxx <user> <pass> /
Fingerprint: 0B BF A1 84 3E B3 8C 1D 84 0A C5 C7 68 55 EE BC
libssh2_sftp_init()!
libssh2_sftp_opendir()!
libssh2_sftp_opendir() is done, now receive listing!
drw-rw-rw 1 root root 0 Feb 17 15:39 .
drw-rw-rw 1 root root 0 Feb 17 15:39 ..
-rw-rw-rw 1 root root 14941 Jan 12 08:53 001AA0609710.pdf
-rw-rw-rw 1 root root 14904 Jan 12 08:51 001AA0609728.pdf
...
/* everything above this line appears very quickly, but the following "all done" takes more than 10 mins to show */
all done
qxu_at_durian(pts/3):~/opensrc/libssh2-1.2/example/simple[152]$ date
Wed Feb 17 17:04:43 SGT 2010
=========================================
Is this a known issue? Can anyone download a CoreFTP server and do a local testing to see the problem?

Just want to mention that libssh2 connects fast to SFTP service provided by OpenSSH (http://sshwindows.sourceforge.net/). So is it possibly a server's issue? Not likely, because FileZilla can connect to CoreFTP's SFTP server quickly.

Thanks,
Xu Qiang
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Received on 2010-02-17