Mysterious socket error

I am again working on my application built on beepcore-c (under Linux).  
I occasionally have BEEP sessions (or at least channels) just drop for no
apparent reason.  The log file shows this:

01/08 10:33:00 beepd-re 2.core start logging
01/08 10:33:00 beepd-re 2.wrap loaded profile for http://www.adeptech.com/beryllium/BERYL/RECEIVE
01/08 10:33:00 beepd-re 1.wrap duplicate library libberyl.so, continuing...
01/08 10:33:00 beepd-re 2.wrap loaded profile for http://www.adeptech.com/beryllium/BERYL/SEND
01/08 10:33:00 beepd-re 2.wrap listening on 5 (backlog 128)
01/08 10:33:32 beepd-re 0.wrap wrapper created: 6
01/08 10:33:32 beepd-re 1.wrap wrote 218 octets
01/08 10:33:32 beepd-re 1.wrap wrote 15 octets
01/08 10:33:33 beepd-re 1.wrap read 67 octets
[...]
01/08 10:36:04 beepd-re 1.wrap read 18 octets
01/08 10:36:04 beepd-re 1.wrap wrote 395 octets
01/08 10:36:04 beepd-re 1.wrap wrote 1913 octets
01/08 10:36:04 beepd-re 1.wrap wrote 353 octets
[normal so far]
01/08 10:36:04 beepd-re 2.wrap id=0 fd=6 revents=0x19/0x19
01/08 10:36:04 beepd-re 0.wrap socket error: 6
01/08 10:36:04 beepd-re 0.wrap stopping iostate: 6
01/08 10:36:04 beepd-re 0.wrap deleting iostate: 6

What is a socket error, and how can I prevent it or recover from it?

I am also seeing problems with frames getting lost, I'm not quite sure 
why yet but perhaps they are related.  The traffic is over a lightly 
loaded 100TX network.

From the peer's perspective, I see messages like this:
12/30 10:49:16 runberyl 2.wrap id=0 fd=5 revents=0x11/0x1
12/30 10:49:16 runberyl 0.wrap socket error: 5
12/30 10:49:16 runberyl 0.wrap stopping iostate: 5
12/30 10:49:16 runberyl 0.wrap deleting iostate: 5
12/30 10:49:29 runberyl 2.core start logging
12/30 10:49:29 runberyl 0.wrap wrapper created: 5
12/30 10:49:29 runberyl 1.wrap wrote 150 octets
[...]
12/30 10:49:29 runberyl 1.wrap wrote 15 octets
12/30 10:49:29 runberyl 1.wrap read 16 octets
12/30 10:49:50 runberyl 0.wrap wrapper destroyed: 5
12/30 10:49:50 runberyl 0.wrap stopping iostate: 5
12/30 10:49:50 runberyl 0.wrap deleting iostate: 5
12/30 10:49:50 runberyl 2.core done logging




-------------------------------------------------------
-- David C. Niemi           Adeptech Systems, Inc.   --
-- Reston, Virginia, USA    http://www.adeptech.com/ --
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