> Do any mission critical applications today use TCP (retorical question)? > If so, how do they cope with interface failure tearing down TCP > sessions, other than just failing.
well, it depends on the application. for instance, SMTP can just detect that the connection was broken and retry sending the entire message. but SMTP by its very nature buffers messages and has explicit acks, so having SMTP cope with interface failures requires little or no extra effort. for that matter, most SMTP sessions are fairly brief. apps that use only brief connections won't experience many errors due to interface failures. other sources of failure are often more significant. interactive apps cope with interface failures quite naturally by allowing the human user to retry the operation when it fails. Keith -------------------------------------------------------------------- IETF IPng Working Group Mailing List IPng Home Page: http://playground.sun.com/ipng FTP archive: ftp://playground.sun.com/pub/ipng Direct all administrative requests to [EMAIL PROTECTED] --------------------------------------------------------------------
