How can I, within my Cocoa app, get a notification when the currently running VPN connection disconnects? I'm running Snow Leopard.
You may be able to use the System Configuration framework for this. You can examine the System Configuration hierarchy with scutil(8), and you might have a look at HardwareGrowler's source code for examples of how to use the framework.
Also, documentation:
http://developer.apple.com/mac/library/documentation/Networking/Conceptual/SystemConfigFrameworks/
http://developer.apple.com/mac/library/documentation/Networking/Reference/SysConfig/
Related
I noticed that there's a recent released apps that enables Raspberry Pi to run a deployed LabVIEW program all by itself and to set the program run as RPi boots. Since I was planning to remotely control the LabVIEW program through the internet using a Web UI, is it possible to setup a webservice of the program on the RPi? By the way, I'm currently planning to use RPi 2 for my project.
If I am getting you right you are about LINX at Makers hub: https://www.labviewmakerhub.com/doku.php?id=blog:users:makerhub:2016-04-07-linx-3
It is open source, free tool. You are free to modify and it and add custom command on LINX Firmware as I understand. After that, you can call LabVIEW Custom Command vi which is part of the API.
You can have a look on all API VIs here: https://www.labviewmakerhub.com/doku.php?id=learn:libraries:linx:reference:labview:start
From the discussion thread here:
We're running the LabVIEW Runtime on the target just like we do on our Linux based RIO devices. The great thing about using the full runtime is that you get the standard LabVIEW expereince with interactive mode, highlight execute, probes, startup executables, etc. This also means that all of the core LabVIEW functionality will work. One way to think about it is anything that works without explicitly installing it on the target from MAX should work on BBB/RPI. We actually don't plug into MAX at all. We currently do not support any toolkits or modules, but we've been experimenting with a couple to see what it would take to support things like web services.
So native LabVIEW web services aren't available yet, but may be coming soon - I'm sure development is responsive to what people ask for, so go to that discussion thread and let them know your interest.
You might be able to 'roll your own' simple web service using the TCP VI's, which as far as I can see should be available on the Raspberry Pi.
Note that deployment to Raspberry Pi or (BeagleBone Black) is only licensed for noncommercial use, as stated in the same thread.
I tried to build a server for integrating the webrtc native APIs in an native app, but I am not sure about how the server should be configured, like the ICE/STUN/TURN, signaling, media server etc..
So far as I know is the open source project: https://github.com/priologic/easyrtc
Can anybody give some recommendations?
Thanks
In a WebRTC infrastructure, there are several things involved. The client part is written in JavaScript and runs on the browser.
But as you said it is a server side part. First there is a ICE/STUN/TURN server that it's used for a client to discover its public IP address if it is located behind a NAT. Depending on your requirements could not be necessary to build/deploy your own server, but use an already public (and free) existing one - here's a list. You can also deploy an open source one like Stuntman.
Then it comes the signaling part, used by two clients to negotiate and start a webrtc session. There is no standard here and you have a few options.
You can use an XMPP server with a Jingle extension. You can deploy an existing XMPP server, like OpenFire or Tigase
You can also use SIP, a protocol much more encountered for VoIP. You can use JAIN-SIP or SIP Servlets.
Or you can develop your own signaling protocol using something like websockets.
The server side options that I was giving you were Java based ones, but you can find similar for other infrastructures too.
STUN/TURN is required. Use public ones (not absolutely stable) or get a Ubuntu machine ans install from the source: https://code.google.com/p/rfc5766-turn-server/
Signaling is trivial. You just forward messages between peers. Just build a simple chat server.
Media server is whole different story and require sophisticated client-server configuration.
I am developing a test chat client app using asmack. First, I am trying to test the multi-user functionality using MultiUserChat class. Basically, my aim is to check the memory & cpu footprint when I am doing a multiuser chat. I am just at very initial stage so I don't have a very fancy UI developed right now. Most of the work I want to do is progrmatically so that I can just get my memory & cpu footprint.
Which xmpp server can I connect to do my development testing for MUC and other XMPP features?
Do u have any sample code that I could refer to?
Let me know if any more details are needed.
Use the Openfire server it's free and easy to setup on a local machine using 127.0.0.1 and also updating your hosts file in windows if needs be
There are a multitude of openfire tutes on the web
There is MUC sample code all over the net as well, check out the docs on the smack community site
Also go over the smack forums on the igniterealtime community site
With android and aSmack don't forget to init static classes by either calling
Class.forName(org.jivesoftware.smackx.muc.MultiUserChat.class.getName(), true, ctx.getClassLoader());
or initializing all static classes
Context context = getApplicationContext();
SmackAndroid asmk = SmackAndroid.init(context);
On my mac I have two kinds of networks available - Ethernet, WiFi.
While making a server call, can I somehow control which network channel to use for making the server call? So, before making server call, I want to specify the network channel to be used for that call - Ethernet or WiFi.
How can this be achieved using objective C. I am working on a cocoa application.
I assume both NIC's are connected to Internet (so both have a IP):
I don't think you can solve it within code (not 100% sure). But what you could do is setup some local routes, configuring which traffic goes over what NIC.
Look at the route command ('man route').
This might help you:
https://serverfault.com/questions/100613/public-traffic-to-go-over-1-nic-and-private-traffic-to-use-another-nic
You can modify the routes available with the System Configuration framework. In scutil(8) you can see the routes that are presently installed in the State:/Network/Service/* dictionaries, and in order to manipulate these programmatically you have to us the SCDynamicStore framework, which is C.
However, if you were trying to just do some ad-hoc service on WLAN only, you could use the CoreWLAN framework, which is in Objective-C.
I'm part of a distributed development team. We all work through terminal services, accessing a remote server where our applications are located.
We're working on a project in which a client application consumes a WCF service, which exposes all the business logic functionality.
In our development process, a developer is often asked to develop an entire use case from user interface to database access, including the service and the business logic.
In such cases the developer must be able to debug the functions/methods on the server side that she/he has build for a given use case. The problem with that is that the service must be run and when another developer needs to debug his/her work, an exception is thrown (I think it is 'AddressAlreadyInUseException' not sure) and the 2nd developer is not able to perform any kind of debugging at the service. This happens even thought we (off course) have different windows usernames and hence we are working in different sessions.
It's still possible for the client app. to continue working with the 'original' service instance since we're catching the exception at the service, but debbugging is impossible. And if the first developer stops the wcf service then the app. fails.
I would like to know if you could have any recomendation for us. My be there's some sort of tool available (even if we must pay for it) that could somehow isolate each developers' workspace at the server... or may be we just need to change something in the way we work.
I would be very grateful for any kind of advice or clue.
Best regards,
Gonzalo
I would recomend that each developer had their own copy of the server services.
When we develop, each developer has a full environment on their machine. As things are completed, they are checked in to the version control system. When the other developers get the lastest version, new functionality is spread to the other developers.
If I understand your setup, all developers are working against the same server, in this case a programming error of one developer will stop all development.
Hey man, the debugger connects through IP communication. That means if a service or process binds a listener, no other service or process can bind this IP port a second time.
That is the reason for throwing the exception.
In Citrix you have the Virtual IP configuration.
You can also consider to place a VM on the server that serves only for one developer. This would also solve this problem