On Tue, 20 Jan 2004, Ippoliti Giuliano wrote:

> 2004/01/19 11:26:46| sslReadServer: FD 49: read failure:
> (104) Connection reset by peer

The server (web server / parent proxy or firewall or other network
equipment inbetween Squid and the requested server) aborted the SSL
connection while Squid was waiting for data.

This is not a common error other than that it can sporadically be seen in
the logs due to requests for invalid servers. If you see this on access to
well known web sites then there is most likely a networking problem
somewhere between the proxy and the requested https web site.