Article View: borland.public.cppbuilder.internet.socket
Article #1988Re: help with Indy Telnet
From: Remy Lebeau (TeamB)
Date: Fri, 01 Sep 2006 16:46
Date: Fri, 01 Sep 2006 16:46
33 lines
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2693 bytes
"Andre' Burke" <no.spam@spam.no> wrote in message news:44f7ef1a@newsgroups.borland.com... > What I can't figure out is why the OnDataAvailable would > deadlock, or for that matter the thread that is calling it. I see that you have the TIdTelnet::ThreadedEvent property set to true. That makes the OnDataAvailable event handler code run in the context of the reading thread, so you have to make sure that its code is thread-safe. Is your logger thread-safe? What kind of container are you using for your Incoming_Queue, and is it thread-safe? I do notice that you are accessing a couple of counter-related variables in the event handler without protection. > When this happens, I dont even get this message in the log-file, so > its not even getting into the code of the OnDataEvent. Since you have the ThreadedEvent property set to true, then that is only possible if the reading thread is not receiving any data, meaning that it is blocked in an idle reading operation. If actual data is received, then there is no way the reading thread can become blocked before triggering the OnDataAvailable event. With that said, there is another possibility to consider - since you are using a Telnet component, what does the actual transmitted data look like? Although it is probably not the case in this situation, it is technically possible that the data itself could be interpreted entirely as Telnet control sequences with no application data available. If that were to happen, then there would be no reason for the OnDataAvailable to be triggered. Gambit
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X-Google-Thread: 11508e,3d66693bd859a203 X-Google-Attributes: gid11508e,public X-Google-Language: ENGLISH,ASCII-7-bit From: "Remy Lebeau \(TeamB\)" <no.spam@no.spam.com> Newsgroups: borland.public.cppbuilder.internet.socket References: <44f68cef@newsgroups.borland.com> <44f6917c$1@newsgroups.borland.com> <44f69c27@newsgroups.borland.com> <adsdf2dk8k4s0tefv5r49fi67ghjs6rlmt@4ax.com> <44f7d1ac$1@newsgroups.borland.com> <44f7e8a0$1@newsgroups.borland.com> <44f7ef1a@newsgroups.borland.com> Subject: Re: help with Indy Telnet Date: Fri, 1 Sep 2006 09:46:52 -0700 Lines: 35 X-Priority: 3 X-MSMail-Priority: Normal X-Newsreader: Microsoft Outlook Express 6.00.2800.1409 X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2800.1409 NNTP-Posting-Host: 68.69.17.41 Message-ID: <44f86462$1@newsgroups.borland.com> X-Trace: newsgroups.borland.com 1157129314 68.69.17.41 (1 Sep 2006 09:48:34 -0700) Path: arc1-ca.pugleaf.net!g2news2.google.com!news1.google.com!news.maxwell.syr.edu!news-han1.dfn.de!news-stu1.dfn.de!news.germany.com!newsfeed01.sul.t-online.de!t-online.de!newsgroups.borland.com!not-for-mail