I am relatively new to iphone development. I have looked through the documentation and cannot really find an answer to this problem.
I have a server which I have created and know the ip address and the port it is using. I am now trying to connect to this using an iphone application I am creating. Through the documentation there are many example where it connects via an ID (such as the witap example) however there is none where it directly accesses a previously created server.
Would anyone be able to point me in the direction of an example that uses this, give me some information or even inform me of another way around doing this? It would be much appreciated. Thanks.
Bonjour is a technology to detect servers in your local network. If you already know it, as you seem to because you know the IP address, you can connect to it using the usual techniques.
It depends on your server, is it a HTTP server? There are some Cocoa classes that might help you.
If it's a custom made server you might consider CFStream or raw sockets.
Related
I'm trying to port a video player Android App to a Web App. The app uses a library called "libSwiftP2P.so".
From looking at the code of the app, all I managed to figure out is that it connects to a STUN server and uses libSwift for Peer-To-Peer connections.
There isn't much information about libSwift online. The only somewhat useful results I found was this GitHub repository, and the libswift.org website, neither of which have been updated in the last 5 years.
I understand that there is a high chance that what I am trying to do is near to impossible. Although both technologies utilize P2P, WebRTC and libSwift might be completely incompatible with one another.
Another option I considered was compiling libSwift's C++ code into WebAssembly, and using that to connect.
However, I haven't ever done anything with WASM and it is probably a way more complicated process than I am putting it.
I would be very grateful if someone could shed some light on this, or if you just tell me that it's not possible, and to give up. Thank you.
I have a project on DNS reflection prevention and I need somehow to capture incoming and outgoing packets in real time... I am working on Linux Debian 8.0... can you please tell me how to do that... I looked in many websites and watched many tutorials but they were confusing and didn't help at all.. could you please help me
Thank you
You can use Wireshark for listening for network traffic and capturing the packets. A command-line version - T-shark can output structured XML, which you can store into the database using the programming language / tools of your choice.
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 currently developing a simple multiplayer game app for Android and I need to have a server to which the users connect to.I'd like to set up this server at home. I have a dynamic IP address,so someone told me I'd have to set up a local DNS server or something like that. I'm not even sure where to start with setting up a DNS server, everything I found was for windows 2003 and linux. Nothing for XP? If any one can shed some light on this matter, explain a bit how setting a DNS works or supply a link with "setting up local DNS for dummies" I'd be grateful.
Also, besides setting up a DNS so I can find the server every time, how about the communication with it? I'd like for it to be as secure as possible. Another friend told me something about communicating via SSH, which is again something I am not accustomed to.
So if someone could explain some of these concepts or offer some GOOD link for that that would be great. I'm very confused :)
Thanks
EDIT
Btw, the server is in Java and currently i'm communicating from Android emulator to the server (which is localhost) via sockets.
That's not a simple thing you're trying to achive. First you have to create your own server on your machine (maybe you're done with this step), then you have to make this server available for everyone. At this point, I suggest the DynDNS service:
http://lifehacker.com/124804/geek-to-live--how-to-assign-a-domain-name-to-your-home-web-server
A local DNS by default help you to find your own servers by name instead of IP address, but if you have a usual internet service with dynamic IP, you need an external DNS provider to route your clients to your server. (read the link above for the full explanation)
About the SSH security: Yes, you will need some security settings indeed, but that could be a very hard problem sometimes. You can set your server to work with SSL sockets, which is a part of the core J2SE release. It will work against some sort of attack, but none against others. Running your own server will raise unexpected numbers of problems, prepare for that.
As already stated in the comment to your post, something like http://www.no-ip.com or http://www.dnsdynamic.org would solve the issue with your dynamic ip - You do not need a local DNS server.
With regards to communication, i believe that SSH is linux/unix only. Since you wish to use Windows for the server, FTP or Remote Desktop would be best. Choose FTP if all you want to do is manage your files, choose remote desktop if you wish to manage your entire computer. I've had good results with the FileZilla FTP server on windows (http://filezilla-project.org/)
With that said, i think you would be better off buying a simple and cheap hosted service instead of using your own computer - you can get something that can run your java app for $5/month some places, and compared with the annoyance of having a local server running in your house, it might be worth it.
I am working on a project that involves an embedded system which runs a non-microsoft OS with a C program for the application and am developing .NET software for its end user applications. For remote configuring with the .NET software (which can go across firewalls), I am considering using WCF. I know only a little about WCF so far but I've read that it is supposed to be interoperable with environments other than .NET. The embedded environment has an HTTP stack but no built in support for web services. Does anyone have any experience with this kind of thing or know if it would be appropriate at all? If so please provide some advice or point me in the right direction.
Thanks!
WCF is interoperable because it's accessed over HTTP. Visual Studio can help you build client libraries very quickly for WCF, but client access to WCF doesn't require anything other than HTTP calls with the proper payload. If you're looking at a remote server call and your built-in support in your embedded environment is basic HTTP, look at building your server-side as REST-formatted methods. Your debugger will thank you.
What kinds of data are you planning on transferring back and forth? For something this low level and proprietary I would recommend sticking with good old fashioned Sockets.
I will be passing configuration data back and forth...basically to enable technical support staff to remotely program the device. If I were using sockets this could be binary data, but there is a requirement that customers with firewalls shouldn't need to open any ports. Because of this I was thinking of sending XML over HTTP. So, is it better to use WCF or REST on the server side? Or WCF with REST?
I'm curious about your "customers with firewalls" requirement. Sockets with binary data or XML over HTTP can use any port (not just port 80), and I'm curious if your device will be "listening" on the network, or just making an outbound connection. If your device is listening, you will need to open a port on the firewall. Making an outbound connection ("phoning home") is much easier on the firewall.
So I think you could use sockets and binary data. However, I have faced similar issues on the last two projects, and I really wanted to implement WCF using REST on the embedded device, but no one else wanted to do it - I'm hoping someone else will be first, and publish some results!
Good Luck! (and post your results!)