Internet Tools (InfoMagic)/Internet Tools.iso/dos_win/winsock/maillist/93-11.Z/93-11/[e-mail] _Mon Nov 29 06:18:58 1993.msg

Internet Message Format | 1993-11-30 | 7KB

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From: [e-mail] (Philip Shotton)
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Organization: IISC, Brain Surgery Dept.
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Subject: Re: blocking

In article <[e-mail]> [e-mail] (David A. Ferrance) writes:

   Can someone tell me about blocking and the WSAE_WOULD_BLOCK (not sure if that
   is it exactly-- close though).  I have no understanding of these concepts and
   although so far it has not hurt me, I'm sure that it will eventually.  This is
   until I can get home and get a book on the subject...

     thanks,
    dave

Blocking simply means that a function call will not return until the
operation is completed or terminates due to error. However if a
resource has been set as non-blocking, then a function call that
_would_ block in blocking mode, will return the error
WSAE_WOULD_BLOCK. ie:

    n=recv(sock,buff,50,flags)

If sock is a blocking socket, n will either be 50 (and the function
may take some time to return - possibly days!); or possibly return -1
indicating an error. However if sock is flagged as non-blocking, the
same call would return immediately with either 0 < n <= 50 (ie as many
bytes as available to be read), or -1 to indicate error. If the
latter, then the WSAGetLastError() call will return WSAEWOULDBLOCK if
there was no data ready to be read.

Since Windows is brain-dead and can't pre-emptively multi-task, then
all programming should use non-blocking calls, otherwise all other
tasks will be hung waiting for completion.

Phil

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####        Phil Shotton    -    [e-mail]    ####
#### Investment Intelligence Systems Corporation, London, UK    ####
#### Phone: [phone].  Fax: [phone]      ####
###!            It's life Jim, but not as we know it    !###
From [e-mail]  Mon Nov 29 08:39:02 1993
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Date: 29 Nov 93 14:27:00 GMT
From: [e-mail] (Richard van Drimmelen)
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Subject: Unloading packet drivers ??

Is there a switch to unload:
    winpkt
    odipkt
    pktint

Thanks for your answers.


Richard van Drimmelen
Netherlands Cancer Institute, Amsterdam
[e-mail]
From [e-mail]  Mon Nov 29 09:39:19 1993
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Date: Mon, 29 Nov 1993 14:54:23
From: [e-mail] (Frank Koehntopp)
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Organization: Siemens Nixdorf Informationssysteme AG
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Subject: VxDTCP site

By popular demand...

gopher biochemistry.cwru.edu

FTP archives/somewhere obviuos... :-)




Will the first to successfully configure NNTP please tell me how he/she did it?
Ta.

Frank.

----------------------------------------------------------------------------
Frank K"ohntopp                                    [e-mail]
Pohlweg 175                                    or: [e-mail]
33100 Paderborn
From [e-mail]  Mon Nov 29 11:10:13 1993
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From: [e-mail]
Subject: LanMan TCP/IP
To: [e-mail]
Date: Mon, 29 Nov 93 9:10:17 CST
Mailer: Elm [revision: 70.85]

There has been some discussion of the LanMan TCP/IP and Winsock in this
forum.  I have (finally) succeeded in putting it all together.  You can
obtain the LanMan client software (for DOS & Win3.1) via anonymous ftp
from ftp.microsoft.com in the Advsys/MSclient/dos/35 or 525 directory.
(The number refers to the size of floppy from which you will install it.)
It is (I'm almost sure) free, but there is a license agreement involved.
Once you have this software installed, you can install the Winsock.  This
software is in the Advsys/lanman/sup-ed/winsock directory.  It includes
all of the necessary instructions.

All of this is a lot of trouble if you do not have a LanMan server handy;
the TCP/IP is a memory hog and performance isn't great.  But if you want
both LanMan and Winsock, it works.  I personally prefer Windows NT or, at
least Win for Workgroups.  We can't wait to see if Chicago will be approved
by our Info Tech group and become the corporate standard when it is released.
(Or, more likely, a year later.)

Steve E.
From [e-mail]  Mon Nov 29 12:20:26 1993
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Date: 29 Nov 1993 16:37:42 GMT
From: [e-mail] (Heath Ian Hunnicutt)
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Organization: California Institute of Technology, Pasadena
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Subject: Announcing: whois for NT

This morning I wrote a whois client for Windows NT (tm).  It is just
a command-line client, but it (seems to) work.

You can get the x86 binary from ftp to: ftp.cco.caltech.edu, look
under directory: /pub/heathh/nt/winsock for the files "whois.*"

Don't forget to set mode binary on your ftp client.

Send me mail whether you get it to work or not.  I am interested
in whether people find it useful.

Cheers,
Heath

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