May 2015 - Pharo-users - lists.pharo.org

Re: [Pharo-users] Issue with UDP Sockets

by Henrik Johansen

Hupps, was reading the old code, I guess this isn't applicable. Sorry :/ > On 18 May 2015, at 5:15 , Henrik Johansen <henrik.s.johansen(a)veloxit.no> wrote: > > >> On 18 May 2015, at 4:44 , Sven Van Caekenberghe <sven(a)stfx.eu> wrote: >> >> >>> On 18 May 2015, at 16:34, Manfred KrÃ¶hnert <mkroehnert42(a)googlemail.com> wrote: >>> >>> Hi Sven, >>> >>> On Mon, May 18, 2015 at 4:14 PM, Sven Van Caekenberghe <sven(a)stfx.eu> wrote: >>> >>>> On 18 May 2015, at 15:47, Manfred KrÃ¶hnert <mkroehnert42(a)googlemail.com> wrote: >>>> >>>> Hi, >>>> apparently I am missing something else. >>>> >>>> I can find devices when connected to a 'regular' LAN. >>>> >>>> However, I have a camera that creates a Wifi accesspoint and makes itself discoverable via SSDP. >>>> Once I connect to this accesspoint my computer gets a valid IP address assigned and the NodeJS code is able to discover the device. >>>> Unfortunately, the Pharo snippet I posted before does not give me any results and hangs in Socket>>waitForDataIfClosed: . >>>> >>>> Any further ideas? >>> >>> Are you sure you restarted the image and your code after switching networks ? >>> >>> I did not check this before. >>> But I just downloaded a fresh 40613 image with PharoLauncher and started it after connecting to the camera accesspoint. >>> The code snippet freezes there as well. >>> >>> Manfred > > The socket API is a bit confusing, since it mixes together the API's that match the primitives for sending/receiving TCP/UDP. > To receive UDP data on the socket, you need something like: > > | message udpSocket host buffer read| > message := (String crlf join: #('M-SEARCH * HTTP/1.1' > 'HOST:239.255.255.250:1900' > 'MAN:"ssdp:discover"' > 'ST:ssdp:all' > 'MX:1')). > > udpSocket := Socket newUDP. > host := (NetNameResolver addressFromString: '239.255.255.250'). > udpSocket sendData: message toHost: host port: 1900. > buffer := String new:4096. > "MX:1 means we expect replies within 1 second, let's be on the safe side and wait 2" > 2 seconds wait. > read := 1. > [read > 0] whileTrue: [ > read := (udpSocket receiveUDPDataInto: buffer) first. > Transcript show: (buffer copyFrom:1 to:read)] > > Cheers, > Henry

May 18, 2015

Re: [Pharo-users] Issue with UDP Sockets

by Henrik Johansen

> On 18 May 2015, at 4:44 , Sven Van Caekenberghe <sven(a)stfx.eu> wrote: > > >> On 18 May 2015, at 16:34, Manfred KrÃ¶hnert <mkroehnert42(a)googlemail.com> wrote: >> >> Hi Sven, >> >> On Mon, May 18, 2015 at 4:14 PM, Sven Van Caekenberghe <sven(a)stfx.eu> wrote: >> >>> On 18 May 2015, at 15:47, Manfred KrÃ¶hnert <mkroehnert42(a)googlemail.com> wrote: >>> >>> Hi, >>> apparently I am missing something else. >>> >>> I can find devices when connected to a 'regular' LAN. >>> >>> However, I have a camera that creates a Wifi accesspoint and makes itself discoverable via SSDP. >>> Once I connect to this accesspoint my computer gets a valid IP address assigned and the NodeJS code is able to discover the device. >>> Unfortunately, the Pharo snippet I posted before does not give me any results and hangs in Socket>>waitForDataIfClosed: . >>> >>> Any further ideas? >> >> Are you sure you restarted the image and your code after switching networks ? >> >> I did not check this before. >> But I just downloaded a fresh 40613 image with PharoLauncher and started it after connecting to the camera accesspoint. >> The code snippet freezes there as well. >> >> Manfred The socket API is a bit confusing, since it mixes together the API's that match the primitives for sending/receiving TCP/UDP. To receive UDP data on the socket, you need something like: | message udpSocket host buffer read| message := (String crlf join: #('M-SEARCH * HTTP/1.1' 'HOST:239.255.255.250:1900' 'MAN:"ssdp:discover"' 'ST:ssdp:all' 'MX:1')). udpSocket := Socket newUDP. host := (NetNameResolver addressFromString: '239.255.255.250'). udpSocket sendData: message toHost: host port: 1900. buffer := String new:4096. "MX:1 means we expect replies within 1 second, let's be on the safe side and wait 2" 2 seconds wait. read := 1. [read > 0] whileTrue: [ read := (udpSocket receiveUDPDataInto: buffer) first. Transcript show: (buffer copyFrom:1 to:read)] Cheers, Henry

May 18, 2015

Re: [Pharo-users] Smalltalkhub password reset

by Esteban Lorenzano

Nico does not work anymore with Pharo and SmalltalkHub. I can doit, but I need your username. Please send it to me in a private mail. Esteban > On 18 May 2015, at 15:36, mtk <kemper.mt(a)googlemail.com> wrote: > > Hi, > > I lost my password for smalltalkhub. I read some older messages in the > interwebs that one has to directly ask Nicolas Petton for resetting the > password, but this didn't work. Is there another way? Maybe a password reset > mechanism would be fine... :-) > > Best > > Marcus > > > > -- > View this message in context: http://forum.world.st/Smalltalkhub-password-reset-tp4827089.html > Sent from the Pharo Smalltalk Users mailing list archive at Nabble.com. >

May 18, 2015

Re: [Pharo-users] Issue with UDP Sockets

by Sven Van Caekenberghe

> On 18 May 2015, at 16:34, Manfred KrÃ¶hnert <mkroehnert42(a)googlemail.com> wrote: > > Hi Sven, > > On Mon, May 18, 2015 at 4:14 PM, Sven Van Caekenberghe <sven(a)stfx.eu> wrote: > > > On 18 May 2015, at 15:47, Manfred KrÃ¶hnert <mkroehnert42(a)googlemail.com> wrote: > > > > Hi, > > apparently I am missing something else. > > > > I can find devices when connected to a 'regular' LAN. > > > > However, I have a camera that creates a Wifi accesspoint and makes itself discoverable via SSDP. > > Once I connect to this accesspoint my computer gets a valid IP address assigned and the NodeJS code is able to discover the device. > > Unfortunately, the Pharo snippet I posted before does not give me any results and hangs in Socket>>waitForDataIfClosed: . > > > > Any further ideas? > > Are you sure you restarted the image and your code after switching networks ? > > I did not check this before. > But I just downloaded a fresh 40613 image with PharoLauncher and started it after connecting to the camera accesspoint. > The code snippet freezes there as well. > > Manfred I don't know then, I used the UDP stuff before in various applications and it worked fine. Just like with all networking code, you sometimes get in a stuck state when developing (i.e. running incomplete code). Getting stuck means you are waiting forever for an answer that is not coming. >From a distance I can't help much more, just double check that your initial message is completely correct and that you send it to the right host:port. Sven

May 18, 2015

Re: [Pharo-users] Issue with UDP Sockets

by Manfred KrÃ¶hnert

Hi Sven, On Mon, May 18, 2015 at 4:14 PM, Sven Van Caekenberghe <sven(a)stfx.eu> wrote: > > > On 18 May 2015, at 15:47, Manfred KrÃ¶hnert <mkroehnert42(a)googlemail.com> > wrote: > > > > Hi, > > apparently I am missing something else. > > > > I can find devices when connected to a 'regular' LAN. > > > > However, I have a camera that creates a Wifi accesspoint and makes > itself discoverable via SSDP. > > Once I connect to this accesspoint my computer gets a valid IP address > assigned and the NodeJS code is able to discover the device. > > Unfortunately, the Pharo snippet I posted before does not give me any > results and hangs in Socket>>waitForDataIfClosed: . > > > > Any further ideas? > > Are you sure you restarted the image and your code after switching > networks ? > I did not check this before. But I just downloaded a fresh 40613 image with PharoLauncher and started it after connecting to the camera accesspoint. The code snippet freezes there as well. Manfred

May 18, 2015

Re: [Pharo-users] Patterns for event handling Morphic?

by Alain Plantec

Hello Stephan, I guess HandleListenEvent: was implemented for such a use. Cheers Alain > On 18 May 2015, at 14:36, Stephan Eggermont <stephan(a)stack.nl> wrote: > > Thanks Alain. > > On 15-05-15 23:48, Alain Plantec via Pharo-users wrote: > - HandleListenEvent: is for particular purpose, used rarely. > > I wonder about the way I'm using it. When drawing a connector > between two shape morphs, I do the following: > > - I have a context menu on the shape, calling #connect > > MDShapeconnect > |connector| > connector := MDTempConnector from: self to: ActiveHand isBezier: false. > connector openInWorld. > > When creating the MDTempConnector, I start listening to the > hand's events > > MDTempConnector>>to: aHand > to := aHand. > ActiveHand addEventListener: self. > > MDTempConnector>>handleListenEvent: anEvent > anEvent isMouse ifFalse: [ ^super handleListenEvent: anEvent]. > anEvent isMouseUp ifTrue: [ self stopListening: anEvent]. > anEvent isMouseMove ifTrue: [ > self moved. > self highlightShapeAt: anEvent ] > > And I stop listening on mouse up, possibly replacing the temporary one > by a permanent one. > > MDTempConnector>>stopListening: anEvent > ActiveHand removeEventListener: self. > (self shapeAtPosition: anEvent) ifNotNil: [ :shape | > from owner addMorphBack: (MDConnector from: from to: shape isBezier: smoothCurve) ]. > over ifNotNil: [ over unhighlight ]. > self delete > > Stephan > >

May 18, 2015

Re: [Pharo-users] Issue with UDP Sockets

by Sven Van Caekenberghe

> On 18 May 2015, at 15:47, Manfred KrÃ¶hnert <mkroehnert42(a)googlemail.com> wrote: > > Hi, > apparently I am missing something else. > > I can find devices when connected to a 'regular' LAN. > > However, I have a camera that creates a Wifi accesspoint and makes itself discoverable via SSDP. > Once I connect to this accesspoint my computer gets a valid IP address assigned and the NodeJS code is able to discover the device. > Unfortunately, the Pharo snippet I posted before does not give me any results and hangs in Socket>>waitForDataIfClosed: . > > Any further ideas? Are you sure you restarted the image and your code after switching networks ? > Thanks, > Manfred

May 18, 2015

Re: [Pharo-users] Issue with UDP Sockets

by Manfred KrÃ¶hnert

Hi, apparently I am missing something else. I can find devices when connected to a 'regular' LAN. However, I have a camera that creates a Wifi accesspoint and makes itself discoverable via SSDP. Once I connect to this accesspoint my computer gets a valid IP address assigned and the NodeJS code is able to discover the device. Unfortunately, the Pharo snippet I posted before does not give me any results and hangs in Socket>>waitForDataIfClosed: . Any further ideas? Thanks, Manfred

May 18, 2015

Re: [Pharo-users] MagicMagritte Questions

by Sean P. DeNigris

stepharo wrote > There is something strange there. For now, I pushed another config to MetaRepoFor[3,4, &5] which explicitly loads Seaside's Zinc group. ----- Cheers, Sean -- View this message in context: http://forum.world.st/MagicMagritte-Questions-tp4826857p4827091.html Sent from the Pharo Smalltalk Users mailing list archive at Nabble.com.

May 18, 2015

Smalltalkhub password reset

by mtk

Hi, I lost my password for smalltalkhub. I read some older messages in the interwebs that one has to directly ask Nicolas Petton for resetting the password, but this didn't work. Is there another way? Maybe a password reset mechanism would be fine... :-) Best Marcus -- View this message in context: http://forum.world.st/Smalltalkhub-password-reset-tp4827089.html Sent from the Pharo Smalltalk Users mailing list archive at Nabble.com.

May 18, 2015