A device I use has recently updated its external control method from simple telnet commands to json-rpc.
I am having a tough time to understand how to connect to the device and communicate with it using this method - eg ask a question and receive a response.
I have been searching for a while now and cannot find any information that I can use. If anyone could point me in the right direction I would be very grateful.
https://q-syshelp.qsc.com/Content/External_Control/Q-Sys_Remote_Control/QRC.htm
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Using c programing i need to display mac address of the devices which are connected to router on terminal.I tried with so many things bt still i am not getting the exact output.Else any command is there to get that details please share.i am doing project based on this so please if anyone know means share the answers.
Not sure about doing it with C, but I have a look at ettercap you could use some command line script to to easily get info about all connected devices a local network.
What you are looking for is to write your your arp-scan.
To do this basically you'll need to write or use existing C based ping code. Apple has a nice simple ping.
Here is the link to apple's simple ping -
simplePing
Then you will want to open your devices arp-table. This will vary based on device but there should be some way to make C code compatible across a narrow range of devices.
Here is an interesting code review involving what you are looking for.
Post is here
I would like to make an application for iOS devices that would communicate with a special type of remote device using HTTP POST requests. The problem is that this device would actually act in the role of a client, while iOS device has to be the server accepting the requests. The next problem, host name and port has to be configured statically at the device sending the requests.
While I'm aware it's possible to give it a try using Dynamic DNS services and UPnP/IGD or NAT-PMP to overcome the problem with iOS device being behind the NAT router, I was wondering whether using Bonjour could simplify the problem in some way. I'm quite a newbie in networking so I'm looking for the direction and want to avoid research of Bonjour if it's not going to bring me anything.
Any other idea of how to solve the problem is appreciated as well.
I had a think about this. IMHO you can't guarantee you'll always be able to expose an iOS based service over a WAN (although it's possible) so this isn't practical.
The best solution I suggest is using uPNP to open the device behind a router to the outside world, then have it send an iOS push notification to the iPhone with the details (hostname, ip, port, etc).
The iPhone would then would then have to set up some kind of persistent connection with the firewalled device to receive data.
Bonjour is a good system to discover and connect to services/clients, but only on your local network. I don't think it is a good idea to try it over the internet.
I have to write an iphone application that controls a device. This device exposes a telnet based interface. The application should ideally have user access control and customizability for each user.
I was thinking of writing C++ classes that would communicate with the device using sockets. This functionality can then be exposed through web-services that can be called by the iphone application.
However as i looked into it deeper, the api allows you to register for events using telnet and then you can receive notification when those events occur. That kinda put a spanner in the works for me. I for one dont know a "push" scenario can work with webservices.
First off i have never programmed for the iphone so far. So i am not really sure what can be done. So i was thinking if instead of having a webserver to go through, why not have the application independently running on the iphone, directly communicating with the device using sockets. The question though is, is that possible and second i am thinking it would raise a security aspect. First we could control security as everything was going through our central server. Is there a way to handle security (in the sense who has access to the device) without having a central server.
I am sorry that this seems like an unorganized post, but iam trying to brainstorm here.
Looking forward to hear your opinions.
Look up the NSPort and NSStream classes.
I'm looking to do this same thing. Have a program running on one computer and want to send/receive telnet commands from iOS. Built one for Android using the Commons library- which has a telnet client API, but don't know the best way to do it in Objective-C (without writing a telnet client library).
As a start, however, I found the OFC library on Google Code. Looks like something of a Commons-like feel, and there seems to be a telnet client. You might take a look at that.
So I have a project I am working on, and I would basically like to send a basic yes/no command from the iPhone to a wifi enabled device that is also connectedto the network on the same router. This other device is not a computer, so I am wondering if I can still use Bonjour? In order to use Bonjour, do both of the communicating devices need to have some sort of a script installed and running that is allowing them to communicate? What would be the best way to connect to this device that is connected to the router, and then to send information/commands to it? I could really use some help finding a direction, because once I identify which tools I need to use, I can research them out and get it done (maybe). If anyone could offer any insight/suggestions whatsoever, it would be greatly appreciated!! Thanks in advance
Bonjour is a local service discovery protocol based on multicast DNS. Even if your device supports it you still need some piece of software on the device to listen to your commands.
I want to use ssh protocol. I want to make an app to transmit signal that would ultimately converted to control IR based home appliances (like controlled by IR remote control. i.e. TV)
This stuff is new to me. I don't have any clear understanding about how it will be possible.
I got suggestion to use SSH:
->Install SSH on your server.
->Configure your Network / Router to forward the SSH port to server and
->Use the SSH client on the iPhone.
Now. Is it the only way?
Someone also suggested to develop UPnP base app!
Is there any sample code available using which I can learn How to transmit the signal from iPhone to do above.
Please give some guidence if anybody has done such thing before or if they know how to do?
So that I can understand the flow and put my efforts afterwards.
If I understand correctly, you want to go iPhone->IR transmitter->(some device that is controlled by IR)
If so, you probably want to use whatever protocol the IR transmitter device is expecting.
If it's not expecting anything, I would look to HTTP, rather than SSH. Implementing SSH on the iPhone sounds like a huge hassle, and the only benefit of it is the tight security. Unless the device you are controlling is a nuclear weapon, I would go with some simple HTTP authentication.
For example, if it was a TV you were controlling, you could just request http:///remote.php?action=turnonthetv from your server. Then you'd use a PHP script to generate the IR signal to turn on the TV. This moves a lot of the logic off of the iPhone, which may or may not work with what you're doing.