Subject: Dropped packets

From: [email-masked] (Diana Peneva)
Date: Tue, 22 Nov 1994 00:30:03 UNDEFINED

I have a link from my PC to a distant (network-wise) machine, that drops 
packets very often. Using ping, I find that about 20% of the packets are 
dropped regularly -- sometimes 40%, sometimes 10%. But never 0.

Who is responsible to retry the packet transmission on an open socket? Are 
there any parameters, that I should set either in Winsock, or the application?

I have HUGE problems using telnet and Imap (from pine.) On the other hand http 
and ftp work normally. 

How come? What to do?

P.S. I'm using Trumpet Winsock 2.0b on my pc and pine-3.91 for Winsock.

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From: [email-masked] (Carlos Dominguez)
Date: 22 Nov 1994 17:47:30 -0500

Diana Peneva ([email-masked]) wrote:

: I have HUGE problems using telnet and Imap (from pine.) On the other hand http 
: and ftp work normally. 

: How come? What to do?

Turn on tracing within the trumpet stack and see what you get. Compare a
ftp session with an IMAP session and see whats going on. There may be
a problem with the trumpet stack or its implementation of PPP.

-- 
  __  __   __ | .__.  __. ::::  Carlos Dominguez - proprietor - sysadmin  
 |    __| |   | |  | |__  ::::  [email-masked]
 |__ |__| |   | |__| .__| ::::  Basselope *nix systems
  ---------------------------   W3 Page = http://www.interport.net/~carlos

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From: [email-masked] (Penio Penev)
Date: Wed, 23 Nov 1994 13:50:13 GMT

On 22 Nov 1994 17:47:30 -0500 Carlos Dominguez ([email-masked]) wrote:
| Diana Peneva ([email-masked]) wrote:

| : I have HUGE problems using telnet and Imap (from pine.) On the other hand http 
| : and ftp work normally. 

| : How come? What to do?

| Turn on tracing within the trumpet stack and see what you get. Compare a
| ftp session with an IMAP session and see whats going on. There may be
| a problem with the trumpet stack or its implementation of PPP.
|  

The first thing I see is that IMAP is _very chatty_. There are lots of
IP packets flying around in both directons, mainly short -- 40-80
bytes. The waiting happens, when there is an outgoing packet and the
answer doesn't come for long.

How can I see what is in the packets themselves, so that I know exatly
at what point in the IMAP protocol is the witing?

--
Penio Penev <[email-masked]> 1-212-327-7423