Server/Client app

What do you mean by 'computer'? Is this a publicly accessible server over the internet, or is it a local machine on a local network?

Using UDP means that you don´t know for sure that a package have arrived or have been lost, this may be suitable for some applications but not for others. what kind of application are you building ?

Take a look at this before you start maybe it will help you
http://www.b4x.com/forum/basic4android-getting-started-tutorials/9678-b4aserver-simplifies-development-enterprise-house-android-applications.html#post53629

What do you mean by 'computer'? Is this a publicly accessible server over the internet, or is it a local machine on a local network?

Click to expand...

I've my phone connected to internet using my Wifi router. Then, I've my computer connected by the same way. They are in the same network.

I want to send some data (UDP packet for example) from my phone to a .NET windows form app running on my computer.

Using UDP means that you don´t now for sure that a package have arrived or have been lost, this may be suitable for some applications but not for others. what kind of application are you building ?

Click to expand...

I know how UDP protocol works

Take a look at this before you start maybe it will help you
http://www.b4x.com/forum/basic...html#post53629

Click to expand...

Thanks!!

magarcan said:

I've my phone connected to internet using my Wifi router. Then, I've my computer connected by the same way. They are in the same network.

Click to expand...

The reason I asked was that you will have to do more work if you are connecting from a different network (for e.g. 3G to a device on Wifi).

Depending on the type of data UDP or AsyncStreams can be used, but I think that AsyncStreams will always use TCP/IP. And yes, you will need sockets to get the streams.

Have a look at:
http://www.b4x.com/forum/basic4android-getting-started-tutorials/7669-asyncstreams-tutorial.html
http://www.b4x.com/forum/basic4android-getting-started-tutorials/7001-android-network-tutorial.html
Basic4android - Network
http://www.b4x.com/forum/additional...9099-network-library-v1-10-udp-supported.html

Asyncstreams is a tool/object to feed data into a TCP/IP socket's input and output streams. Asynch will queue messages in its buffer, then send them all at once. Asynchstreams handles all of this for you, on seperate threads mind you, and raises a _NewData event when data is received. UDP sockets do not have input or output streams, simply, you build the packet yourself and send it when necessary. When a packet arrives the _PacketArrived event is raised. There are marked differences between TCP and UDP protocols, which, it seems like you are already aware. Depending on the type of application you are building, the requirements of data reception reliability, and the amount of traffic you will be sending will determine which protocol to implement.

I recommend you to check B4AServer: B4AServer - simplifies development of enterprise in-house Android applications

I can state that UDP p2p application is well possible, workable, but i could test only on real devices.
Under Win7 64 bit i an not able to connect several emulators.