October 2011 - Pharo-dev - lists.pharo.org

Re: [Pharo-project] Zinc and P2P

by Johannes Rasche

than you Carlo, I think I'll go deeper into those packages, possibly Cees an help understanding if necessary regarding Croquet: yes I had it in mind, also tried a little last year, but wasn't sure that I would get the right answers - anyway it's another option Johannes Am 27.10.2011 um 10:51 schrieb Carlo: > Hi Johannes > > Took a quick look at comments of some DGV packages and it looks like they have put a lot of groundwork in. > > !Tric-P2P Chat commentStamp: '<historical>' prior: 0! > This package represents a simple chat application that runs on top of AardWorks-Gossip. > The idea is that the user makes him/herself available for chat. This effectively means that the node will respond to searches for the user's author initials. After searching for a user's author initials, you can open a chat with the user, sending and receiving data is done through the local AWGPeer. > This app is a proof-of-concept. It uses floodsearching (e.g. broadcasting) and direct routing of packets, dynamically allocated and previously hardwired endpoints, etcetrera. In fact, this might well exercise most of the code in AardWorks-Gossip ;)! > > > Maybe Croquet has some useful ideas for you too. > > Good luck... > Cheers > Carlo > > On 27 Oct 2011, at 10:27 AM, Johannes Rasche wrote: > > Thanks Sven, > > but as you mentioned firewalls might be the challenge, > > but is that really a miracle ( though it's for me :) ? > > Some weeks ago Stef was asking a P2P question and > 'http://www.squeaksource.com/DGV' turned out to have a solution. > > But I didn't have the time up to now to check that is detail, > still hoping that this point might be solved by a more up-to-date approach. > > It seems that I have to study DGV ... > > Cheers > > Johannes > > Am 27.10.2011 um 09:55 schrieb Sven Van Caekenberghe: > >> Johannes, >> >> On 27 Oct 2011, at 09:45, Johannes Rasche wrote: >> >>> I'm planning to use Zinc >>> >>> and have a question, which might sound trivial for networking experts: >>> >>> is it sufficient for Zn-Server to work >>> if someone using Zn-Client knows my actual IP-adr (plus username and pw)? >> >> Yes, that is enough: when an HTTP client knows an HTTP server (and the network is there) they can talk to each other, that includes ZnClient and ZnServer. >> >> The challenge with P2P is exactly that: how will parties discover each other and will they actually be able to talk to each other at the network level (firewalls, ISP restrictions, etc..). >> >> As always, http://en.wikipedia.org/wiki/Peer-to-peer is a good place to start. >> >> HTH, >> >> Sven >> > >

Oct. 27, 2011

Re: [Pharo-project] Zinc and P2P

by Johannes Rasche

Thanks GÃ¶ran, I did so Am 27.10.2011 um 11:25 schrieb GÃ¶ran Krampe: > On 10/27/2011 10:27 AM, Johannes Rasche wrote: >> It seems that I have to study DGV ... > > Drop an email to Cees, he is probably happy to answer some questions. > > Guessing he might use casedeg (at) gmail.com > > regards, GÃ¶ran >

Oct. 27, 2011

[Pharo-project] [update 1.4] #14210

by Marcus Denker

14210 ----- Issue 3432: Color>>fromString fix http://code.google.com/p/pharo/issues/detail?id=3432 -- Marcus Denker -- http://marcusdenker.de

Oct. 27, 2011

Re: [Pharo-project] Zinc and P2P

by GÃ¶ran Krampe

On 10/27/2011 10:27 AM, Johannes Rasche wrote: > It seems that I have to study DGV ... Drop an email to Cees, he is probably happy to answer some questions. Guessing he might use casedeg (at) gmail.com regards, GÃ¶ran

Oct. 27, 2011

Re: [Pharo-project] Zinc and P2P

by Carlo

Hi Johannes Took a quick look at comments of some DGV packages and it looks like they have put a lot of groundwork in. !Tric-P2P Chat commentStamp: '<historical>' prior: 0! This package represents a simple chat application that runs on top of AardWorks-Gossip. The idea is that the user makes him/herself available for chat. This effectively means that the node will respond to searches for the user's author initials. After searching for a user's author initials, you can open a chat with the user, sending and receiving data is done through the local AWGPeer. This app is a proof-of-concept. It uses floodsearching (e.g. broadcasting) and direct routing of packets, dynamically allocated and previously hardwired endpoints, etcetrera. In fact, this might well exercise most of the code in AardWorks-Gossip ;)! Maybe Croquet has some useful ideas for you too. Good luck... Cheers Carlo On 27 Oct 2011, at 10:27 AM, Johannes Rasche wrote: Thanks Sven, but as you mentioned firewalls might be the challenge, but is that really a miracle ( though it's for me :) ? Some weeks ago Stef was asking a P2P question and 'http://www.squeaksource.com/DGV' turned out to have a solution. But I didn't have the time up to now to check that is detail, still hoping that this point might be solved by a more up-to-date approach. It seems that I have to study DGV ... Cheers Johannes Am 27.10.2011 um 09:55 schrieb Sven Van Caekenberghe: > Johannes, > > On 27 Oct 2011, at 09:45, Johannes Rasche wrote: > >> I'm planning to use Zinc >> >> and have a question, which might sound trivial for networking experts: >> >> is it sufficient for Zn-Server to work >> if someone using Zn-Client knows my actual IP-adr (plus username and pw)? > > Yes, that is enough: when an HTTP client knows an HTTP server (and the network is there) they can talk to each other, that includes ZnClient and ZnServer. > > The challenge with P2P is exactly that: how will parties discover each other and will they actually be able to talk to each other at the network level (firewalls, ISP restrictions, etc..). > > As always, http://en.wikipedia.org/wiki/Peer-to-peer is a good place to start. > > HTH, > > Sven >

Oct. 27, 2011

Re: [Pharo-project] Zinc and P2P

by Johannes Rasche

Thanks Sven, but as you mentioned firewalls might be the challenge, but is that really a miracle ( though it's for me :) ? Some weeks ago Stef was asking a P2P question and 'http://www.squeaksource.com/DGV' turned out to have a solution. But I didn't have the time up to now to check that is detail, still hoping that this point might be solved by a more up-to-date approach. It seems that I have to study DGV ... Cheers Johannes Am 27.10.2011 um 09:55 schrieb Sven Van Caekenberghe: > Johannes, > > On 27 Oct 2011, at 09:45, Johannes Rasche wrote: > >> I'm planning to use Zinc >> >> and have a question, which might sound trivial for networking experts: >> >> is it sufficient for Zn-Server to work >> if someone using Zn-Client knows my actual IP-adr (plus username and pw)? > > Yes, that is enough: when an HTTP client knows an HTTP server (and the network is there) they can talk to each other, that includes ZnClient and ZnServer. > > The challenge with P2P is exactly that: how will parties discover each other and will they actually be able to talk to each other at the network level (firewalls, ISP restrictions, etc..). > > As always, http://en.wikipedia.org/wiki/Peer-to-peer is a good place to start. > > HTH, > > Sven >

Oct. 27, 2011

Re: [Pharo-project] Zinc and P2P

by Sven Van Caekenberghe

Johannes, On 27 Oct 2011, at 09:45, Johannes Rasche wrote: > I'm planning to use Zinc > > and have a question, which might sound trivial for networking experts: > > is it sufficient for Zn-Server to work > if someone using Zn-Client knows my actual IP-adr (plus username and pw)? Yes, that is enough: when an HTTP client knows an HTTP server (and the network is there) they can talk to each other, that includes ZnClient and ZnServer. The challenge with P2P is exactly that: how will parties discover each other and will they actually be able to talk to each other at the network level (firewalls, ISP restrictions, etc..). As always, http://en.wikipedia.org/wiki/Peer-to-peer is a good place to start. HTH, Sven

Oct. 27, 2011

[Pharo-project] Zinc and P2P

by Johannes Rasche

Hi Sven or whoever feels concerned, I'm planning to use Zinc and have a question, which might sound trivial for networking experts: is it sufficient for Zn-Server to work if someone using Zn-Client knows my actual IP-adr (plus username and pw)? Thanks in advance Johannes Johannes Rasche mail: johannesrasche(a)me.com www: http://myNeat.net

Oct. 27, 2011

Re: [Pharo-project] Pharo for iOS

by John McIntosh

Well this is an old note, but I thought I'd answer it. You can download, install and run the Scratch.app https://github.com/johnmci/Scratch.app.for.iOS This is not the closure VM, but does have the Open/GL canvas, or you can choose to use the alternate canvas which is based on CALayers. Now about building apps on iOS. You can choose to either (a) run the VM and show the squeak desktop which I did for Blob and Swirl, these being experimental early toys mostly to track the stability of the VM as Apple sends developers crash reports if there are enough generated. (b) run the VM and show a Cocoa UI, do all work via Smalltalk, Both the Fractions Calculators and WIkiServers do that. This is hard because getting a walk back means setting up VNC so you can control things, and using proxy and callbacks to do work in Smalltalk code is hard to debug and code, plus you need to pass in all these constants to Alien or FFI which you gleam from the apple header files. Bad things happen when you deadlock between the VM and iOS callbacks. (c) run a cocoa app and use the VM as a subprocess to be the Model, where the View and Controller is all Objective-C. Which is mostly how the Scratch.app is designed. We give taps, keyboard, load this project, and stop/go to the VM as a result of interacting with cocoa controls. The VM in turn mostly provides audio and frame updates. Oh and I"m not sure about the JIT stuff, pre 3.2 making a virtual memory page executable was not allowed by non-root apps. But in post 3.2 it seems they added some extra mmap keywords #define PROT_EXEC 0x04 /* [MC2] pages can be executed */ #define MAP_JIT 0x0800 /* Allocate a region that will be used for JIT purposes */ Obviously someone could try it... On Fri, Sep 23, 2011 at 12:41 PM, Pat Maddox <patmaddox(a)me.com> wrote: > sweet! where can I find instructions on how to do this too? > > > On Sep 22, 2011, at 4:37 AM, Alexandre Bergel wrote: > > > I have Pharo running on my ipad. > > I just followed instruction of Bert and it works like a charm. This is > not accesible via itune however, but, it is perfectly okay to have pharo > applications on it. John has a couple of them > > > > Alexandre > > > > > > On 22 Sep 2011, at 06:46, Dennis Schetinin wrote: > > > >> What is the state of the art and nearest perspectives of using > Pharo/Squea (or maybe some other Smalltalk implementation) for iOS > development? And does Apple officially allow to Smalltalk-based > applications? > >> > >> -- > >> Dennis Schetinin > > > > -- > > _,.;:~^~:;._,.;:~^~:;._,.;:~^~:;._,.;:~^~:;._,.;: > > Alexandre Bergel http://www.bergel.eu > > ^~:;._,.;:~^~:;._,.;:~^~:;._,.;:~^~:;._,.;:~^~:;. > > > > > > > > > > > > > > > -- =========================================================================== John M. McIntosh <johnmci(a)smalltalkconsulting.com> Corporate Smalltalk Consulting Ltd. http://www.smalltalkconsulting.com ===========================================================================

Oct. 27, 2011

Re: [Pharo-project] How to encrypt a password?

by John Toohey

I guess the next question then, is it possible to define variables via the VM command line, as with the Java VM, i.e. -Dhome=/home/cat and have a properties class that make these available to the applications. On Wed, Oct 26, 2011 at 12:05, Mariano Martinez Peck <marianopeck(a)gmail.com> wrote: > > > On Wed, Oct 26, 2011 at 5:54 PM, John Toohey <jt(a)parspro.com> wrote: >> >> Off topic, but is the use of a .pharoconf file documented somewhere? > > No at all. Pharo does know nothing about it. > It is just a plain file you can create and read stuff from there...just as > any other file in any other language :) > >> >> On Wed, Oct 26, 2011 at 05:12, Francois Stephany >> <tulipe.moutarde(a)gmail.com> wrote: >> >> But I didn't want to put such password in the code... at >> >> the end what I did (because my scenario is really stupid and only for >> >> me), is to read the password from a file in my machine :) Â hahahahha >> >> >> > >> > That would be the kind of thing that belongs to a .pharoconf file in >> > your >> > /home directory ;) >> > >> > >> >> >> >> -- >> ~JT >> > > > > -- > Mariano > http://marianopeck.wordpress.com > > -- ~JT

Oct. 26, 2011