i have a problem with local network connection. i'm writing an iphone application and i need to read/write files to a computer. Both devices connected on the same network.
if it's possible, i want to get connected computers ip list, select one of them and read/write files like pdf, doc, txt etc.. if it's not possible to do, i will write the computer ip which i want to connect. There is no problem, both of solution is OK.
But i dont know what do i do after get the computer's ip ?
i found this chat client/server on local, but i got it very complicated.
Anyone have any idea about this ?
You'll need to have a server running on the computer, which can show files and allow for files to be read and created.
Easiest is to run a webdav service on the computer, Apache provides the mod_dav module for this purpose.
The iPhone app then becomes the client. I'd suggest using neon for this purpose. It's a C library that provides listing, reading and writing files on a remote webdav server.
That's how I would do it.
1) Find the network address of the computer you want to connect to. For this you can make use of Bonjour. It's very easy to setup because Bonjour handles the resolving of address for you.
You just have to publish a service (e.g. _myprotocol._tcp) via the ´NSNetService` class which is available on iOS and OS X (Windows too)- in your case you would publish the service on your computer.
Then you search for the service with the NSNetServiceBrowser class.
When you found a service you can then resolve it. This actually gives you the network name of the other device.
2) Connect to the other device via a tcp socket. The CocoaAsyncSocket library is very good at this. This project also includes some examples. One example already provides a bonjour server and client implementation.
i found exactly what i want. The solution is here
Related
I am working with the BlueZ libraries for managing the bluetooth stack under linux. I am trying to open a socket that should connect with a specific service whose UUID is known. I have successfully tried to open sockets between a server and a client following the examples here:
http://people.csail.mit.edu/albert/bluez-intro/c404.html
where it is also described how to explore services in a remote host; however, what I cannot figure out is how to specify the UUID while connecting the socket. This is something quite straightforward on other contexts, as it happens when using Android libraries; however, with BlueZ I haven't found examples on the web.
Thanks for the help!
Stefano
-- added some details in a reply... don't know if it's right or not; if not, sorry
thanks for your help!
In my post I said I wanted to connect a socket with a specified UUID since I had in mind a function like createRfcommSocketToServiceRecord as can be found in:
http://developer.android.com/reference/android/bluetooth/BluetoothDevice.html#createRfcommSocketToServiceRecord%28java.util.UUID%29
which returns a socket given a certain UUID. I am developing two softwares, one being the client and the other the server, therefore it's a service I am creating, not a standard one. I publish such service on the server with a specified UUID, and I would like to connect to it from the client. The server is running fine, since with an android platform, exploiting the mentioned createRfcommSocketToServiceRecord method, I am able to connect to the server with the right service.
The example you posted is very clear as well, but unfortunately it is in Python, while (I forgot to point out) I am using Bluez as a C library. I am able to exploit the SDP and inspect services on a remote server; however, when it is the time of setting up the socket, I don't see how to specify the port. I thought about the rc_channel, but as far as I understood it is the bluetooth channel (ranging from 1 to 11 or something similar). Could you please point out Where I should be able to specify the port while creating the socket in the client? And where am I able to find the right port in the complex structure the sdp is dealing with? -- referred to:
http://people.csail.mit.edu/albert/bluez-intro/x604.html
Thanks again for the help!
You don't connect sockets by UUID. You use a socket to connect to remote device and browse its SDP to discover the UUIDs it offers, and map that to a socket port. Here's an example of this process using PyBluez, python wrappers above BlueZ
http://people.csail.mit.edu/albert/bluez-intro/x290.html
In short I'm trying to browse a Mac's web site on the local wifi network under a .local hostname that is not the same as the machine's 'computer name' and think I'm missing a setup step.
I have a local install of nginx on my Macbook, with the proper /etc/hosts and nginx.conf entries to serve multiple sites, each with their own distinct local hostname. Assume the Macbook's network name is computername.local, and I have 2 sites running, one at http://computername.local and another at http://servicename.local. I can access each of these sites just fine from the local machine, but also want to be able to access http://servicename.local from an iPhone on the same WiFi network. I'm getting a timeout for that URL, but the other one works just fine.
I'm guessing something has to be done to allow servicename.local to be used on the local network, which I've left out. What is required to do that? Do I need to use Bonjour for that? Where would I add this new local hostname?
Another Mac on the same network can access this one under servicename.local just fine if I define the IP in its /etc/hosts file too, but I can't modify that file on the iPhone obviously. It's not jailbroken, and I'm not really interested in doing that just to get this working.
Not sure if it will help the OP, but another way of doing this - besides running a DNS server or jailbreaking the phone - is to run an HTTP proxy on the Mac, and configure the iPhone to use the proxy. Then the iPhone will pick up the Mac's local hosts file entries because it resolves DNS queries through the proxy. I've blogged about how to do this using the free Mac proxy "SquidMan" here: http://egalo.com/99j
I want to use some sort of nmap-like functionality to autodiscover a ASP.NET web server (running on port 443) somewhere on the network. This way users don't have to find and enter the IP manually. Is there a good/clean way to do this?
Thanks to #ceejaoz's comment above, I was able to do this pretty easily in Bonjour.
I used Mono.Zeroconf, a .NET/Mono Bonjour library, to advertise the service, and the default iOS NSNetService stuff to resolve it on the iPhone. (There's plenty of tutorials on how to do this around the nets).
I made a Windows Service in Visual Studio to actually run the code that advertises the ip and port, since a web service isn't really a good place for that.
One big caveat (as of December 2010): the Bonjour DLLs that come with Mono.Zeroconf are totally broken (no errors, they just don't do anything). Steal the ones from Pidgin instead.
I have written a small client server socket application. It is a proof of concept for some socket programming that I want to apply to a much bigger project.
For the moment I want to user wireshark to analyse the traffic that goes between them. They are both running on my local machine.
I have installed a loopback interface, and have tried to use wireshark with it.
No joy. Any ideas?
I have successfully analysed traffic between my machine and other machines no problems.
I have had a look here,
http://wiki.wireshark.org/CaptureSetup/Loopback
And I am not using the address 127.0.0.1 which they mention saying you can't capture traffic on 127.0.0.1
Thanks.
You might try creating a virtual machine to run your application and using wireshark on it.
Save yourself some grief and download Microsoft Network Monitor.
As good as Wireshark is on Unixen, Windows is a "special" case :)
I want to create an iPhone app which makes calls to a web service. For testing, I want to first create the API calls on my mac (server running XAMPP) and if it works fine there I want to port it to the actual server.
If my iPhone and mac are on the same network, can I access the web service using the IP address of my mac?
Thanks.
Any time someone answers with "why not," ignore the post. This just takes up space and adds absolutely no value...their post imitating their life.
Anyway, I access my laptop localhost (WAMP stack) from my iPod Touch by entering the IP address of my laptop on my Touch location bar. There is some configuration that needs to happen for this to work. I found what I needed at:
http://www.frihost.com/forums/vt-88381.html
Good Luck!
I can not speak about actual development, however I access intranet pages from a Ipod Touch all the time by either typing http ://ip or http://local_dns_name
As long as the iphone / ipod is on the network correctly (e.g. through standard wifi and not 3g/whatever) you should be able to access any and all local resources.
What I do:
Connected to the same network, I go in to the wireless settings and create a manual proxy that points to my machine. I use Charles proxy for testing a lot/seeing traffic, works like a charm and it lets me use my macbook hosts file so I don't need to do any funky listening rules in apache - just the same vhost settings I use on my machine already.
http://www.charlesproxy.com/documentation/faqs/using-charles-from-an-iphone/
Why not?
Have you tried it and have some problems?