i read in some stackOverflow post that The host would need to have port 2195 open and support push notifications under apns.how do i make my server to support apns.
what does this line means in Push Notification guide
To establish a trusted provider identity, we should
present this certificate to APNs at connection time using peer-to-peer authentication.
do i need to make a connection to APns through my native app? someone please explain this
Pretty much any server that doesn't have restriction on what sockets you can open is ready to be an APNS provider. In your project code, you can just open a socket to Apple servers (or use a library).
My understanding that Google App Engine and basically any traditional shared web hosting block any port other than 80, so you cannot use them. However, you can look into Urban Airship that provides a RESTful API that basically use from any service. It might get pricy though.
In short you need to establish an SSL connection, and then send the payload in the pre-defined binary format.
alt text http://developer.apple.com/iphone/library/documentation/NetworkingInternet/Conceptual/RemoteNotificationsPG/Art/aps_provider_binary.jpg
See this guide for more details.
I use appengine, so I solved this by renting a super cheap server in hetzner.de. It basically serves as proxy to my appengine app and uses this library: https://github.com/notnoop/java-apns
that library has a one line way to send the message, using the certificate.
Google just opened up the ability to do Socket stuff on AppEngine, so I created a sample project that you can use to send push notifications using GCM and APNS in python. Feel free to use any of it that you like.
I've also included a sample iOS project and Android project that hook up nicely with the app engine solution.
https://github.com/GarettRogers/appengine-apns-gcm
** Full Disclosure ** this is my project, and I'm in no way trying to promote it because it's mine... it's simply the only available project that solves your problem at the moment. If you find anything that does a better job, please leave a comment.
You may check out java-apns-gae.
It's an open-source Java APNS library that was specifically designed to work (and be used) on Google App Engine.
https://github.com/ZsoltSafrany/java-apns-gae
Related
I heard Apple recently added web sockets which allows a server to push data but i did't get any single example or any documentation.
I want to make a app where i can have the data from a websocket server can anyone help me how can i do that.
May i have to download a third party library?
I am working on an application that uses socket to transfer data from one device to other without the server interference and it is important that no one can get a copy of the data only the sender and the receiver. The server will be only for certificate authority and ip addresses collection and distribution. The main issue was opening a connection between to devices and it was solved by configuring the router to accept outside connection and port for warding and so on .. yet i am building the application for users that wont bother themselves to configure there owb routers .. I am asking for a solution to the problem or a better way to set the communication between the devices.
I search the internet for more details on the subject and i found other solution is to use P2P. There are few P2P platform like jxta or sip2peer. that can reach the client even if the client is behind a fire wall and this solve the problem. instead of using java for android or swift for ios, i will use xamarin (C#) to do that, since xamarin is native cross platform IDE .. thanks to every body in this greet community.
I have an iphone app with rails serving as a backend server.
Now I need to implement a chat functionality using sockets connections.
A lot of examples show you how to implement chat using sockets in browser.
What I need here is how I can implement an application where you create socket server in the rails app , and the client in iphone app which listens to the channel I give them.
I tried using faye(examples given only how to implement client in the browser) and using fayeObjC library for iphone to create client, but am not able to listen to the channel from this library.I know I must be implementing it wrong here.
I'll share my code also here, but first I need to know is there a better solution than this?
Also I appreciate some links to some examples where socket server is in rails and clients are iphone app.
Appreciate any help and mostly need a right direction to implement it.
Update
I tried the faye combination again and it worked.Although still looking for more solutions.
You can check about TCP sockets:
http://www.raywenderlich.com/3932/how-to-create-a-socket-based-iphone-app-and-server
Chat Application Using Ruby
http://quickblox.com/modules/chat/
http://caydenliew.com/2011/11/ios-mac-os-communication-with-asyncsocket/
http://www.macresearch.org/cocoa-scientists-part-xxix-message
Next link is a comprehensive Networking Guide - Using Internet Sockets
You must keep in mind two major problems to peer-to-peer communications (Chat): reachability and how to receive new messages while your application is in the background (get notifications).
For the last you can use APNS approach: an invisible notification will be pushed to the iPhone indicating that a new message is ready to be read. So your app will make a request for unread messages (what app like WhatsApp does).
Besides TCP sockets you could use websockets (HTTP - so there are no firewall problems).
Best in class - Socket.IO.
Here you will find the wiki https://github.com/learnboost/socket.io/wiki (you will find there an extension for Ruby also)
Here an example for iOS chat client for socket.io & node.js backend
Jabber
Another option: XMPP - "stands for eXtensible Messaging and Presence Protocol. Such a protocol is open-standard and oriented to message exchange (builds and maintains by Jabber community). Message exchange happens near real time, so it is an ideal infrastructure to build chat-like applications. The protocol also implements a mechanism to notify presence information (whether a user is online or not) and the maintenance of a contact list. XMPP is a thorough protocol, which has been adopted also by big companies like Google to build their Instant Messaging service."
Here you will find all about developing a Jabber Client for iOS (enable users to sign in, add buddies, and send messages; how to install and configure a jabber server, create accounts, and interact with the server from an iOS application http://mobile.tutsplus.com/tutorials/iphone/building-a-jabber-client-for-ios-server-setup/
I know that SocketRocket by square is a strong native Objective-C library. But it doesn't offer the channel abstraction you seem to be looking for.
If you would consider outsourcing the WebSocket connections then you could use a hosted service like Pusher, who I work for. You can publish messages (trigger events) on channels using the pusher-gem. And you can subscribe to channels and receive messages using one of Pusher's Objective-C libraries.
Other solutions will also have Objective-C libraries and you can find a list of them via this realtime web tech guide.
I'd like to play with the idea of creating a server program that communicates with an iPhone app over socket connections. I've found several guides within Apple's documentation for client side programming (with CFNetwork, NSStream, etc) but I don't know where to begin on programming the server application, or even what language to use, or for that matter, how to deploy and run a server application on my current web hosting package through Go Daddy. A simple instant messenger style application example should get me started, but any advice is appreciated.
if you want to create socket connection is better to use CFNetwork , it has more flexibility for you I already used NSURLConnection but CFNetwork has better performance. this is my steps and how I developed my app :
configuration of server
selection C++ for my server side (service)
start to develop a client-side app for iphone to connect to server using NS classes
but I had some problems in sending and receiving message to and form server . so I changed it to CF classes it works better and faster now.
The easiest way to handle server-to-device communications is to use APNS (Apple Push Notification Services).
Communication in the other direction (device-to-server) can be handled simply with NSUrlConnection.
If you want to write your own socket code for this, well - good luck with that.
Do you want your client application to be able to run on more than one OS? If so, you might want to stay clear of anything Apple specific. Although, if you strictly want to run on iOS, using MusiGenesis' suggestion could save you a ton of time.
I have found that Python and Perl are both pretty great for socket programming. I know that Python has several libraries built in for handling HTTP requests etc. If you want to run your server as a daemon, I found this code very helpful:
http://www.jejik.com/articles/2007/02/a_simple_unix_linux_daemon_in_python/
Here is a general python sockets guide:
http://docs.python.org/howto/sockets.html
Good luck.
I've seen some apps that connect to routers via ssh.
Can anyone recommend any documentation on interacting with Cisco IOS configs and notifications? I'd love to write some custom in-house code!
Most of the configuring/querying can be done via SNMP, so you don't have to have a SSH client/command parser built in you application. What's supported depends on router/ios version. You can check here: SNMP OID Browser. SNMP can sometimes be overwhelming, but in time it can be of great use to you. My first suggestion is to find a SNMP browser (eg. from solarwinds) so you can inspect what info you can get from the router. Then you can use NET-SNMP library to do the actual querying/configuring of the router, or if you are willing to pay you can try IP*Works.