TCP connection problem in Unixware 7

From: Alexandre Krasnov (tmp_at_tern.ru)
Date: 11/27/03 

Date: Thu, 27 Nov 2003 10:16:53 GMT

Hi all

As this list looks more alive then comp.unix.unixware.misc I repost here my message regarding the problem in UW7
I wonder how somebody else has not met this problem yet as I have not found anything regarding the problem.

When connecting to some sites Unixware establishes connection but fail to communicate further.
For examle

#ftp ftp.modssl.org
Connected to en4.engelschall.com.

but then I must wait for several minutes to see a greeting message.
The same problem exists for some other ftp sites (with different ftp servers)
I don't know if this problem exists for other services as my primary problem - the work of squid with ftp sites and I tested only ftp.

This works the same on all versions of UW7 including latest 7.1.3 MP3. The problem is not connected to FTP protocol (as telnet ftp.modssl.org 21 works the same way) or network card (as I tested different cards from Intel and
3Com)

The same connection from other OSes (including OpenServer 5) works correctly.
# ftp ftp.modssl.org
Connected to master.modssl.org.
220 ftp.modssl.org FTP Server (ProFTPD) ready.
Name (ftp.modssl.org:root):

I tried replacing UW with OSR5 (on the same hardware) and the problem disappeared so I can be sure that the problem is in UW tcp.

truss shows the following:
write(1, " C o n n e c t e d t o".., 34) = 34
sigset(SIGINT, SIG_IGN) = 0x0830C580
sigset(SIGINT, 0x08307740) = SIG_IGN
ioctl(3, TCGETS, 0x080477B4) Err#22 EINVAL
fxstat(2, 3, 0x080477F4) = 0
read(3, 0x08319BA0, 8192) (sleeping...)

Can somebody shed some light on the above? Is there any way to solve the problem?
If you need some information (e.g. tcp dumps) just let me know.

Alexandre.

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