- Pharo-users - lists.pharo.org

Re: [Pharo-users] [ANN] Open source Pharo application "mediaclue"

by Esteban Maringolo

Hi Andreas, Thanks for sharing the whole stack and how to build it from the ground up. One thing I noticed is that you are using the Plupload component? How was that integration with Seaside done? Is it available separately? Thanks! Esteban A. Maringolo On Tue, Feb 25, 2020 at 10:41 AM Brodbeck Andreas <andreas.brodbeck(a)mindclue.ch> wrote: > > Hi all > > I'm a Pharo lover since many years. A huge thanks to all of you, making Pharo possible! As a giving back I would like to open source some of my business projects (Thanks to my supporting customers, too). The first is a web based media assets management called "mediaclue" (Think of it as a image/audio/video/document sharing platform, e.g. for teachers inside a school): > > *********************************************** > https://github.com/talk-small-be-open/mediaclue > *********************************************** > > (Everything is ready for simple install into a fresh Linux server with included Ansible provisioning scripts to create the whole appliance) > > Cheers! > Andreas > > P.S. The UI language is still german at the moment, but that should turn multilanguage eventually > > ----------------------------------------- > Brot? www.brotrezept.ch! > > Andreas Brodbeck > Software-Macher > mindclue GmbH > Dipl. El.-Ing. ETH > > +41 55 622 26 24 > www.mindclue.ch > ----------------------------------------- > >

Feb. 25, 2020

Re: Problem with ZnWebSocket and closed connections

by Davide Varvello

Hi Sven, It's working! Thank you very much Davide Sven Van Caekenberghe-2 wrote > Hi Davide, > > First I'll explain why you see a difference in behaviour, then I'll give > you a solution. > > Network connections are expensive resources, most servers try to close > them as soon as possible when they are not used. > > Zinc HTTP Components does not normally close connections by itself, > although timeouts do naturally occur. > > The WebSocket code normally loops on the server side when timeouts occur > while waiting for incoming messages (more specifically in > ZnWebSocket>>#runWith:). Note that even though it loops, there is no > actual communication. > > Both previous facts, not closing unused connections and looping on > timeouts, result in a working echo/chat example, when run locally. > > When you put a proxy in front of this, the proxy (like nginx) might decide > to close an unused connection. This is allowed and it is what you are > seeing. This is not an error and thus normal. > > Of course, you might want to keep such connection open for longer, even if > they are not used. This can be done by keeping them alive. Note however > that this might result in many open connections. > > How do you keep a connection alive ? > > One solution is to do this at the application level. > ZnWebSocketStatusHandler does this by sending a message every second. > > The WebSocket protocol (https://tools.ietf.org/html/rfc6455) does define a > number of control messages, all which were already implemented as such. > Two of these messages, ping & pong, are meant to be used for implementing > keep alive. Client side, this was already done > (ZnWebSocket>>#handleControlFrame:). > > I now added automatic keep alive message sending server side as well. > > This can be seen in the updated implementation of ZnWebSocket>>#runWith: > > https://github.com/svenvc/zinc/commit/9073acc2fad197c2787c6cd0f4d315981ebb9… > > Now, whenever the read times out (as defined by the socket stream's > timeout, a Zn setting), a ping control packet is sent to keep the > connection alive, the client will answer with a pong, and then the server > loops. > > This should be sufficient to solve your issue (but both the proxy's as > well as the Zn timeout need to be compatible, Zn's needs to be smaller). > > Please let me know if this works for you. > > Regards, > > Sven > >> On 23 Feb 2020, at 18:19, Davide Varvello via Pharo-users < > pharo-users@.pharo > > wrote: >> >> >> From: Davide Varvello < > varvello@ > > >> Subject: Re: Problem with ZnWebSocket and closed connections >> Date: 23 February 2020 at 18:19:02 GMT+1 >> To: > pharo-users@.pharo >> >> >> Hi, >> >> I put nginx as a websocket proxy and I run the ZnWebSocketEchoHandler. >> Unfortunately also with this configuration the connection closes it after >> a >> couple of minutes of inactivity >> >> Cheers >> Davide >> >> >> >> -- >> Sent from: http://forum.world.st/Pharo-Smalltalk-Users-f1310670.html >> >> >> -- Sent from: http://forum.world.st/Pharo-Smalltalk-Users-f1310670.html

Feb. 25, 2020

Re: [Pharo-users] [ANN] Open source Pharo application "mediaclue"

by Sven Van Caekenberghe

Hi Andreas, It is good to hear about successful projects. It is even better when the customer and developer are both happy. And it is totally awesome that you are sharing this as open source as a way of giving back. Thank you! I briefly clicked around in the application and it felt very responsive (i.e. fast), which is not easy for a media management app. Great work. Hopefully this will inspire others by showing them what is possible. Sven > On 25 Feb 2020, at 14:40, Brodbeck Andreas <andreas.brodbeck(a)mindclue.ch> wrote: > > Hi all > > I'm a Pharo lover since many years. A huge thanks to all of you, making Pharo possible! As a giving back I would like to open source some of my business projects (Thanks to my supporting customers, too). The first is a web based media assets management called "mediaclue" (Think of it as a image/audio/video/document sharing platform, e.g. for teachers inside a school): > > *********************************************** > https://github.com/talk-small-be-open/mediaclue > *********************************************** > > (Everything is ready for simple install into a fresh Linux server with included Ansible provisioning scripts to create the whole appliance) > > Cheers! > Andreas > > P.S. The UI language is still german at the moment, but that should turn multilanguage eventually > > ----------------------------------------- > Brot? www.brotrezept.ch! > > Andreas Brodbeck > Software-Macher > mindclue GmbH > Dipl. El.-Ing. ETH > > +41 55 622 26 24 > www.mindclue.ch > ----------------------------------------- > >

Feb. 25, 2020

[ANN] Open source Pharo application "mediaclue"

by Brodbeck Andreas

Hi all I'm a Pharo lover since many years. A huge thanks to all of you, making Pharo possible! As a giving back I would like to open source some of my business projects (Thanks to my supporting customers, too). The first is a web based media assets management called "mediaclue" (Think of it as a image/audio/video/document sharing platform, e.g. for teachers inside a school): *********************************************** https://github.com/talk-small-be-open/mediaclue *********************************************** (Everything is ready for simple install into a fresh Linux server with included Ansible provisioning scripts to create the whole appliance) Cheers! Andreas P.S. The UI language is still german at the moment, but that should turn multilanguage eventually ----------------------------------------- Brot? www.brotrezept.ch! Andreas Brodbeck Software-Macher mindclue GmbH Dipl. El.-Ing. ETH +41 55 622 26 24 www.mindclue.ch -----------------------------------------

Feb. 25, 2020

Re: Ubuntu64 install fine, would like to port to Slackware64

by tty

I was able to launch both the launcher and the latest 9.0 image without error by creating symlinks in /usr/lib to the appropriate libraries in /usr/lib64 libcurl-gnutls.so.4 -> /usr/lib64/libcurl.so libgit2.so -> /usr/lib64/libgit2.so libgit2.so.0.28.3 -> /usr/lib64/libgit2.so.0.28.3 libgit2.so.28 -> libgit2.so.0.28.3 cheers. t -- Sent from: http://forum.world.st/Pharo-Smalltalk-Users-f1310670.html

Feb. 25, 2020

Re: [Pharo-users] Loading Bootstrap in Pharo 8

by DavidBajger

Hi! Just evaluate following statement in fresh P8 image. It will load Seaside latest version together with Torsten's Bootstrap4 library. Metacello new baseline:'Bootstrap4'; repository: 'github://astares/Seaside-Bootstrap4:master/src'; load Cheers! David ----- David Bajger -- Sent from: http://forum.world.st/Pharo-Smalltalk-Users-f1310670.html

Feb. 25, 2020

Re: [Pharo-users] Loading Bootstrap in Pharo 8

by Torsten Bergmann

Hi Martin, SmalltalkHub is a thing of the past - we mainly moved to git and GitHub now. As the docu on my page says: http://www.smalltalkhub.com/#!/~TorstenBergmann/Bootstrap say the project has moved to https://github.com/astares/Seaside-Bootstrap If you follow the docu and load instructions on: https://github.com/astares/Seaside-Bootstrap it should be usable in Pharo 8 too. Side note: ========== Note that there is also a Bootstrap4 in the pipe: https://github.com/astares/Seaside-Bootstrap4 yet unfinished - but already usable since most components are wrapped. Thanks Torsten > Gesendet: Dienstag, 25. Februar 2020 um 00:07 Uhr > Von: "syzygy" <syzygy1974(a)gmail.com> > An: pharo-users(a)lists.pharo.org > Betreff: [Pharo-users] Loading Bootstrap in Pharo 8 > > I am testing the new image of Pharo 8 (Pharo Contribution Jenkins) with > pre-installed seaside. When trying to load the Torsten Bootstrap: > > Gofer new > url: 'http://smalltalkhub.com/mc/TorstenBergmann/Bootstrap/main'; > package: 'ConfigurationOfBootstrap'; > load > > (Smalltalk at: #ConfigurationOfBootstrap) project stableVersion load > > I get the following error: Name not found: Seaside-Pharo-Development > > My question is: is this supposed to work on Pharo 8? > > Thank you, > Martin. > > > > > -- > Sent from: http://forum.world.st/Pharo-Smalltalk-Users-f1310670.html > >

Feb. 25, 2020

Re: [Pharo-users] [ANN] Next Pharo Sprint: Feb 28

by Marcus Denker

> On 25 Feb 2020, at 03:00, Steve Quezadas <steveeq1(a)gmail.com> wrote: > > This is interesting. How many people usually go to these code sprint things? > For the âin personâ sprint: Mostly this is local people where it is organised (we used to have a Sprint in Chile and France). In Lille we are 15-20 people, sometimes a guest joins that visits just for the Sprint which we enjoy a lot but it is hard to justify travelling for just that, of course. We try to be online (see Discord Sprint channel) but it is not that easy to coordinate and get a real sprint feeling there. (This is one thing we need to improveâ¦). Marcus

Feb. 25, 2020

Re: [Pharo-users] What is the difference between a form and a morph?

by Markus Stumptner

Normally, there should not be an inheritance relationship between wrapper and wrappee, but I agree that describing Morphs as wrappers around Forms seems to miss the point. The notion of wrapper usually implies that there is little modification to the protocol of the wrappee, a wrapper should not need a lot of code. But Morphs are a completely different level of the architecture, with a large and complex protocol that's very different from Forms. So let's start again. Forms are images (implemented as rectangular pixel arrays, as stated). Morphs are the objects that describe how the graphical interface works, they control displaying (for which they use Forms), handling of user input (mouse clicks, dragging etc) and above all the internal structure of the interface (for example the different regions that make up a window on the screen are Morphs). Note that the user display side of the Pharo interface is handled by class DisplayScreen, which is a subclass of Form.Â So the Morphs in the user interface display themselves by inserting their Forms in the proper places on the Form that is the internal representation of the screen. So, as Subbu said, you don't convert Morphs to Forms, they serve different purposes.Â Morphs (some Morphs) have instance variables that allow them to refer to the Form that they use for displaying.Â Hope that helps a bit. I note that all of this (plus some more) you can essentially get from the class comments of the two. Markus On 25/2/20 12:22 pm, Steve Quezadas wrote: > Ben, > > I checked, [Form] is inherited from class [DisplayMedium]. So in > smalltalk, the inheritence pattern is: > Object -> DisplayObject -> DisplayMedium -> Form > > The inheritence pattern of ImageMorph is: > Object -> Morph -> ImageMorph > > One does not inherit the other and is not a wrapper, at least in Pharo8 > > On Sun, Feb 23, 2020 at 10:11 PM Ben Coman <btc(a)openinworld.com > <mailto:btc@openinworld.com>> wrote: > > On Mon, 24 Feb 2020 at 04:31, Steve Quezadas <steveeq1(a)gmail.com > <mailto:steveeq1@gmail.com>> wrote: > > I usually like to go through the source code to answer my own > question, but I can't tell by reading it. > > [Morph], from what I understand, deals with manipulating > graphics on smalltalk. But when I use ZnEasy to get a jpeg > file, I notice that it returns a [Form] and not a [Morph] to > display a jpeg. Spec2 also wants [Form] for displaying images > rather than [Morph]. > > So what is the difference between a [Form] and a [Morph] since > they both seem to deal with graphics? > > > I don't know the exact answer, but if you review method > ImageMorph>>form > you will see that the ImageMorph is a wrapper around a Form. > > So some simple differences that may be inferred. > - Many morphs are not bitmaps. > - Morphs are GUI elements, i.e. interact with mouse and keyboard > - Forms are not GUI elements > - Forms can be manipulated without displaying them. > > In some other graphicsÂ system, an analogyÂ could be putting an > imageÂ on a button and asking "what is the difference between an > 'image' and a 'button' ?" > > wrt Spec2, Morph is one backend that Spec2 might use to display a > Form, > or Spec2 might display the Form using a GTK widget. > > cheers -ben >

Feb. 25, 2020

Re: [Pharo-users] [ANN] Next Pharo Sprint: Feb 28

by Steve Quezadas

This is interesting. How many people usually go to these code sprint things? I am learning pharo and roassal and I perused Moose and it looks very interesting! On Mon, Feb 24, 2020 at 4:52 AM Marcus Denker <marcus.denker(a)inria.fr> wrote: > We will organize a Pharo sprint / Moose dojo Feb 28, starting at > > 10:00am. (Local Time Paris). > > Goals of this sprint: > > - Pharo 8: Fix issues from tracker > https://github.com/pharo-project/pharo/issues > > Remote Sprint: Remotely, you can join us on Discord. During the sprint, we > synchronize local and remote Pharo sprinters: > > http://pharo.org/contribute-events > > We have added a Board to coordinate the work: > https://github.com/orgs/pharo-project/projects/9 > > Known Local Sprint meetings > > - Lille/France: It will be at the Inria Lille, Building B, third floor > (RMoD offices). > As the building is not open to the public, please contact us before if you > plan to come > > A list of all Pharo Event of the year an be found here: > https://association.pharo.org/events >

Feb. 25, 2020