[Interest] Qt 5.3 Beta - Multicast receiving only first packet.

Cornelius Hald hald at icandy.de
Fri Apr 4 14:43:05 CEST 2014


Could that be this issue?
https://bugreports.qt-project.org/browse/QTBUG-37489


On Thu, 2014-04-03 at 15:31 -0500, Ryan Kroetch wrote:
> After doing some testing on linux with Qt5.3-beta, it looks like the
> problem is limited to Windows.
> 
> 
> The same program receives multiple readyRead signals when compiled
> with Qt5.2.1, but only receives one when compiled with Qt5.3-beta
> mingw-4.8.2
> The multicast receive works as expected in linux regardless of Qt
> version.
> 
> 
> On Fri, Mar 28, 2014 at 1:43 PM, Ryan Kroetch <ryan.kroetch at gmail.com>
> wrote:
>         Running the same example on the same machine & network
>         compiled with Qt 5.2.1 receives multiple readyRead signals w/
>         datagrams as expected.
>         Running the example compiled with Qt 5.3 receives a single
>         'readyRead' signal w/ 2-3 datagrams contained. It seems like
>         the readyRead signal isn't getting reset after calling
>         readAll.
>         
>         
>         I don't have easy access to a linux or OS X machine with Qt
>         5.3 to test cross-platform behavior.
>         
>         
>         On Fri, Mar 28, 2014 at 10:19 AM, Thiago Macieira
>         <thiago.macieira at intel.com> wrote:
>                 Em sex 28 mar 2014, às 09:33:16, Ryan Kroetch
>                 escreveu:
>                 > Running the Opensource Qt 5.3 Beta release w/
>                 packaged mingw on windows.
>                 >
>                 > Connecting a QUdpSocket to a multicast address only
>                 receives the first
>                 > datagram.
>                 > I see this behavior in my own application, and in
>                 the Multicast Receiver
>                 > Example.
>                 >
>                 > Can anyone else reproduce this?
>                 
>                 
>                 Are you sure the sender sent multiple packets? How do
>                 you know they were
>                 received by the machine in question?
>                 
>                 Does the example work for a machine running OS X or
>                 Linux on the same network?
>                 
>                 --
>                 Thiago Macieira - thiago.macieira (AT) intel.com
>                   Software Architect - Intel Open Source Technology
>                 Center
>                 
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> 
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