I am having a task,considering one emulator as server and i have to access a web service from the client emulator.I think this is not possible in android,if anyone knows about it please send some code snippets to do this.
Android's java.net package is pretty much the same as Java's so you can use Sockets and ServerSockets for TCP communication or a DatagramSocket for UDP.
However, there is currently no support for SOAP webservices in the android SDK but you can use third party libraries or build your own. Have a look at the following questions:
How to call a net web service from android
Regarding connecting to a webserver from android
Related
I am writing a mobile trading app (android/ios) and i need suggestions on the best way to connect the app to the server (messageQ)
If i use raw TCP connection , would my users have a problem if they are behind corporate wifi's (protected by firewalls)? If yes, in that case, is web socket a better solution?
With the backend server, after researching with zeroMq, i believe a full fledged broker like rabbitmq is a better option to start with. Now , if i use a web socket connection from my native app, Rabbit MQ has a sockJS-AMQP bridge . But i am not sure, if there is a java and iOS web socket client to speak to sockJS server .
Any experienced views is greatly appreciated
Have you considerer to use MQTT?
If you don't need AMQP you can also use directly an MQTT broker, such as http://mosquitto.org/ or http://www.hivemq.com/
Here (https://github.com/owntracks) you can find some ready libraries for iPhone and Android.
In order to solve the the firewall problem MQTT is available over HTTP.
You can read here:
http://www.hivemq.com/mqtt-over-websockets-with-hivemq/
or
here http://mqtt.org/wiki/doku.php/mqtt_over_websockets
This post can also help you : (https://www.ibm.com/developerworks/community/blogs/sowhatfordevs/entry/using_mqtt_protocol_advantages_over_http_in_mobile_application_development5?lang=en)
For a iPhone application I used directly MQTT and as server RabbitMQ with the MQTT plug-in
http://www.rabbitmq.com/mqtt.html
I hope it can be useful
I'm working on an App that I've made for both iOS and Android. On the iOS side, I use a constant TCP connection and JSON messages for the push notifications. I want to do the same thing for the android version, however I'm not sure if it's possible. I think using the Cloud Connection Server http://developer.android.com/google/gcm/ccs.html is the way to go, however it only shows samples for Java and Python. Is it possible to use this in c++?
You can choose whatever programming language to desire to implement the server side. The question is whether you can find an easy to use XMPP C++ library for connecting to the Cloud Connection Server.
I assume it will be easier to find an HTTP C++ library for sending HTTP requests to the GCM HTTP Connection Server. If you are not planning to use the upstream functionality (device to cloud), you don't need to go though the trouble of implementing/using the XMPP protocol.
I want to implement SIP server and SIP client programs for android 4.0. In android samples already provides the "SIPdemo" SIP client program. It's use the android.net.sip package.
Can I use the android.net.sip package for implement the SIP server?
Is there any sample SIP server programs for android?
I think it is possible , I find this product in market usipserver it s free .
So it s possible to make you own sip server in Android
but I don't think with just android.sip , you must writing all code for the server use directly native code ( socket etc )
No. If you want a sip server, you can use Asterisk. Install and run it on a server machine and register the SipDemo into it.
I think http://www.linphone.org might be what you're looking for.
The android sip api requires a server I think.
what is the best way to create a two way constant communication between a server and an android app?
When I say constant communication, I mean client asking server for data or server constantly pushing data to clients.
From what I saw, I can't use websockets since they are designer for server/browser setups. Is that right? If so, what is the alternative?
Is there free frameworks to work with this in Android?
What I am trying to do is an application that works like a chatting but for multiple people. So they all will get in one "room or channel" on their devices, and then interact with each other, in a way handdled by the server.
Thanks!
As far as I know , one possible way is using a web service where the client can connect to the server , if the web service is RESTFul there are many libraries to access it , one of them is the apache HTTPClient , for the server pushing the only way I know is C2DM for pushing data to clients.
For continuously-open data connection, you may use Sockets. But you should also consider the fact that an always-open connection will drain your battery quickly too. For more details, read this and this
You may want to look at AutobahnAndroid:
https://github.com/tavendo/AutobahnAndroid
which provides native Android/Java WebSocket client framework (plus WAMP = PubSub/RPC over WebSocket .. http://wamp.ws).
This is fully interoperable with WebSocket servers that server browser clients.
The AutobahnXX libraries (where XX = Python, JS, Android) are Open-Source (Apache 2.0). We (Tavendo) are offering a commercial virtual appliance based on Autobahn: http://autobahn.ws
Disclaimer: I am author of Autobahn and work for Tavendo.
But keeping the connection running on the background on iOS and Android devices does drain the battery, for people who have this issue, I suggest using push notifications when the app is not on the foreground.
From what I saw, I can't use websockets since they are designer for
server/browser setups. Is that right? If so, what is the alternative?
Websocket is an IETF/W3C protocol, so it is not confined to a specific client platform. You can use Android websocket to get a two-way communication between Android and server side. For Android websocket client, I recommend using AndroidAsync. It has all websocket API that you need to establish the communication link and exchange data between Android and the server.
I am a newbiee in socket communication....android client,
I am facing a problem to communicate my android client to C# server using TCP protocol only so that i can when my server queries some data or information to the android client, the client responds back. communication will be over Wi-fi.
plz guide.
Any help is appreciated...
Thanx
Android Developers
has plenty of docs on how Android does that -- there is no shortage of stuff ready