From kde-devel  Sun Jun 13 22:27:57 2010
From: Robin Atwood <robin () binro ! org>
Date: Sun, 13 Jun 2010 22:27:57 +0000
To: kde-devel
Subject: Re: Howto read a named pipe with Qt4?
Message-Id: <201006140527.58087.robin () binro ! org>
X-MARC-Message: https://marc.info/?l=kde-devel&m=127646814901364

On Monday 14 June 2010, Robin Atwood wrote:
> I have created a pipe with mkfifo which is driven by syslog-ng and want to
> read it from my app. Searching always points me to QLocalSocket but when I
> call 'connectToServer()' I get "ConnectionRefusedError".
> 
> I tried QFile in Read/Write mode but got no output. I tried a standard
> open() with O_RDWR+O_ASYNC+O_NONBLOCK and passed the fd to QFile but that
> produces no output either. What is the secret to this?

Ah, I finally found a useful hit. The trick is to use QSocketNotifier and the 
activated() signal and not QFile's readyRead().

Sorry for the noise!
-Robin
-- 
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Robin Atwood.

"Ship me somewheres east of Suez, where the best is like the worst,
 Where there ain't no Ten Commandments an' a man can raise a thirst"
         from "Mandalay" by Rudyard Kipling
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