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?
Related
I have a client - server IOS application. In addition, I need to write an application for it on WatchOS. So I have 2 questions:
When I send a command from Apple Watch, do I need to connect to the server from the watch or transfer information to the IOS application and connect to the server from the phone?
If I have to connect to the server with an IOS application, then how can I connect in background mode?
As an example, you can take any messenger, for example Telegram
If I reply to a message with AppleWatch, how is the message being sent to the server (Via iPhone or directly via AppleWatch)
For connection to the server, I use the "Starscream" framework
Maybe I don't understand something, but Apple made it impossible to establish a connection in background mode
I would be grateful if you tell me or provide examples and articles, so that I could understand what to do.
Apple Watch apps can connect directly to servers using URLSession ... no need to go via the phone.
Here is an example on using URLSession in Combine, which is the "latest and greatest" way of doing things.
Otherwise this example shows using it in a more conventional way, with the bonus of SwiftUI.
Otherwise
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 am currently writing an iPhone application that sends and receives JSON data from a remote server to essentially display realtime information. Me and my partner started the project using Google App Engine (Python) for the server-side implementation mostly because it was easy to pick up and seemed suitable for our needs at the time. However, we're only just now starting to see the downsides of the framework for realtime iPhone apps - APNS is not at all supported, and neither is the GAE Channels API. So our only option for displaying the realtime server data on our app is to continuously poll the server, which certainly seems like horrible design.
We'll have to port our server-side code to a new framework. My question is, which one do we use? From numerous searches, I still have yet to find a satisfactory answer.
I should mention that I don't necessarily want the server to send push notifications. I just want to be able to push data to clients in real-time, and then manipulate that data on the iPhone client-side code. We're fine with setting up the framework on a local server if we have to.
Since you don't want to be pull data in background (lett alone if it is even possible)will have to use APNS.
But why switch away from google app angine, you could use an APNS provider like Urban Airship wich provide there on API to connect with.
You'r not even the fist to run into this problem: Apple Push Notifications on Google Appengine
Probably the easiest realtime framework you can use for sending data to iOS clients in real-time is PubNub (http://www.pubnub.com). It's reasonably priced, and it scales to anything you can throw at it. In my experience, it has no problem delivering a message to an end client in under .25 milliseconds (regardless of the number of clients it's being sent to).
Their latest version also supports APNS functionality for when you app isn't in the foreground.
https://github.com/pubnub/objective-c/blob/master/iOS/README_FOR_APNS.md
If you want to create your own APNS server (since you are running on App Engine anyway), there are examples of how to do that using App Engine's new Socket API. I've written a demo python AppEngine application that people might find helpful in this regard.
https://github.com/GarettRogers/appengine-apns-gcm
I have to do a simple iPhone project as part of an university exam which consists in creating a simple instant messenger based on a client/server system using the Java Servlet technology (required).
What I would like to know is if there is a framework or some simple classes that make me able to listen for incoming http message from a server without make a request so that an iPhone can send directly to another iPhone an instant message.
Thanks in advance and have a nice day!
L.
From what I understand from your question, you need a listener. There are several 3rd party implementations that provide what you need. Basically you just need to open a socket for listening on a HTTP server running on your iPhone.
Try these, it should provide you with what yo need
CocoaHTTPServer.
MongooseDaemon
If youre looking for a way to receive message from WEB server - you may use Apple Notification service (here`s a good tutorial)
Another way is to use long-poll connection, but is not an easy thing to implement in IOS.
Maybe you can check for incoming message by requesting web server from iPhone (ex. every 10 seconds)?
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