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Article #1830Can I check for invalid TCustomWinSocket pointers?
From: Lesley Anne
Date: Mon, 09 Oct 2006 17:52
Date: Mon, 09 Oct 2006 17:52
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1557 bytes
I have a TServerSocket that gets queries from client connections and sends a response back to the socket that requested it. The problem is that it often has to check external databases before it can formulate its response, so there can be a brief delay before it has something to send back. If during that time the client has disconnected, it causes an access violation when I try to send back the response to a socket that no longer exists. I'd like to be able to check whether my TCustomWinSocket* still points to a valid active socket before I try sending the response to it. Is there a good way to do that?
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X-Google-Thread: 11508e,f9dc4bb901912d81,start X-Google-Attributes: gid11508e,public X-Google-Language: ENGLISH,ASCII-7-bit From: "Lesley Anne" <mspfila-ng@yahoo.com> Newsgroups: borland.public.cppbuilder.internet.socket Subject: Can I check for invalid TCustomWinSocket pointers? Date: Mon, 9 Oct 2006 13:52:37 -0400 Lines: 12 X-Priority: 3 X-MSMail-Priority: Normal X-Newsreader: Microsoft Outlook Express 6.00.2900.2869 X-RFC2646: Format=Flowed; Original X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2900.2962 NNTP-Posting-Host: 144.160.5.25 Message-ID: <452a8c67$1@newsgroups.borland.com> X-Trace: newsgroups.borland.com 1160416359 144.160.5.25 (9 Oct 2006 10:52:39 -0700) Path: arc1-ca.pugleaf.net!g2news2.google.com!news3.google.com!news4.google.com!border1.nntp.dca.giganews.com!border2.nntp.dca.giganews.com!nntp.giganews.com!newspeer1.nwr.nac.net!newsfeeds.ihug.co.nz!ihug.co.nz!newsgroups.borland.com!not-for-mail