site_archiver@lists.apple.com Delivered-To: darwin-kernel@lists.apple.com Thread-index: AcZpjEjyk4U3BCl3RraADZ2EH76y6gAb09ew Thread-topic: Socket filtering There are two situations here. I don't know which you are talking about. One, each such session should have complete pattern matching. If any part of the data is not matched I have to drop complete data. Second, It is possible that the task can be done in multiple sessions.So I will retain the pattern matched data and will discard only unmatched data. I will close my side of the connection if I don't get any data for a long time. Better still I will send "Are you alive?" message to him now and then if I am not getting any data for some specified time and I am expecting data to come. Which kind of situation is this? --Sanjay -----Original Message----- From: darwin-kernel-bounces+samishra=quark.com@lists.apple.com [mailto:darwin-kernel-bounces+samishra=quark.com@lists.apple.com] On Behalf Of Eric Long Sent: Thursday, April 27, 2006 5:20 AM To: Josh Graessley Cc: Darwin Kernel Subject: Re: Socket filtering

I'm not sure what you are trying to accomplish here.

When the socket is closed, any uninjected data should be discarded.

You are asking for a hook to use as a warning that the socket will close. Do you mean a hook before the client calls close on the socket?

I'm not sure how one would predict such a thing. A hook after the client calls close seems useless because the client is done calling read, so there is no point in injecting data.

Well, I'm scanning data looking for pattern matches. I don't necessarily know the protocol, so I don't know for sure how much data to expect. If I find a partial match in a packet, I want to see if the next packet contains the end of the data I am looking for, so I swallow the packet and wait for the next packet. If it turns out there is no next packet, I've got a problem. If I discard the data, I've messed up the stream. I need to properly reinject it before the socket closes. Eric _______________________________________________ Do not post admin requests to the list. They will be ignored. Darwin-kernel mailing list (Darwin-kernel@lists.apple.com) Help/Unsubscribe/Update your Subscription: http://lists.apple.com/mailman/options/darwin-kernel/samishra%40quark.co m This email sent to samishra@quark.com _______________________________________________ Do not post admin requests to the list. They will be ignored. Darwin-kernel mailing list (Darwin-kernel@lists.apple.com) Help/Unsubscribe/Update your Subscription: http://lists.apple.com/mailman/options/darwin-kernel/site_archiver%40lists.a... This email sent to site_archiver@lists.apple.com