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[APP] X-Link - Zero Setup File Transfer

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By joschi70, Member on 2nd March 2012, 06:26 AM
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The app I would like to present is called X-Link and is intended to make file transfers between devices (Android or PC) easy.

It's using multicasts to find other clients within the same WiFi network.
So no setup ist needed.

In addition to the Android app there is also a Java based PC client available.
This client has been tested on Linux and Windows but might work on other configurations.

The full description and a short video can be found on the Android Market page:

You can not only transfer files between PC and Android but also between Android devices.

This is beta software, so there are still bugs.
Please report them in this thread. I'll have a look as soon as I find time and will contact some of you to get things fixed.

There are surely some timing (and timeout) problems which need some attention.
Make sure your router supports multicasts.

Please post comments, I'll try to read them all

Link to PC client

Copying of directories
Supported since 0.8.4 beta.

Testing and how you can help

Multicast test
To test if your network is able to deal with multicast messages you can do the following test:

1. Download the file MulticastSender.jar and MulticastReceiver.jar.
2. On one PC start the MulticastSender.jar and on another the MulticastReceiver.jar.

The sender sends screenshots. If you see the screenshots on the receiver's side, multicasts are working for you.
If not, X-Link will not work.

If this works but X-Link doesn't it's likely that there is a problem concerning timeouts within X-Link.
In this case, please send me a mail (xlink [at]

If sharing on Android does not work
Sharing does not seem to be working in some apps.

If you encounter such a problem, please download the app XLinkDebug.apk and install it.
Use sharing as you normally would with X-Link but select X-Link Debug instead.
On execution the app will copy the information needed for me to fix the issue to the clipboard.

Please paste the clipboard into a mail ans send it to the following address: xlink [at]
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2nd March 2012, 06:42 AM |#2  
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installed both the client and app on my Nexus One (CM7)

PC client doesnot detect my Mobile.
2nd March 2012, 06:47 AM |#3  
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Originally Posted by firoz3321

installed both the client and app on my Nexus One (CM7)

PC client doesnot detect my Mobile.

Was your phone on a WiFi network?
2nd March 2012, 06:49 AM |#4  
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obviously, yes it is
2nd March 2012, 07:09 AM |#5  
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The devices have to be connected to the same WiFi network and the network has to support multicasts (which usually should be the case).
If you are on a weak WiFi signal it might take more than one try to find other devices.

My test devices are:
Galaxy Nexus, Nexus One and Notion Ink Adam
2nd March 2012, 07:12 AM |#6  
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i really do not have knowledge about the Multicast thing, but my Wifi Signal is good. And i used SAMBA and other wifi file sharing apps and they all worked using the same wifi.

And clicked RELOAD many times but i cant see any device in the popdown menu..
2nd March 2012, 07:42 AM |#7  
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Hm ... so this seems not to work on your network
Multicast is different from TCP connections, so this can't be compared.
3rd March 2012, 04:19 AM |#8  
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Wow, it actually worked in HTC Desire!! Great app!! Now I can transfer files w/o any cables!! Need sometime to allow 2 devices to connect though..

Sent from my HTC Desire using XDA App
3rd March 2012, 04:27 AM |#9  
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I don't know anything about Multicast, but my Mac is on the same Wifi network as my Galaxy Nexus, and the Mac couldn't see the Nexus. I tried "Reload" several times.
3rd March 2012, 04:40 AM |#10  
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Works on Windows 7 64-bit and a Galaxy Nexus. Cool app, really like it!

My only suggestions would either be to get rid of the menu and put it all in the "drag file here" area, or maybe some slightly simpler graphics. They come off a little cheesy.

Other than that, it works well.

Next steps would be to keep app closed, but still have access to dropping files. Root access? I'm not sure how it would work.
3rd March 2012, 04:46 AM |#11  
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App and client work seamlessly with windows 7 and tmo sgsII.

Only thing I notice is inability to share pics directly from my phone's gallery. I use my file explorer and it works fine.

Amazing work. Coffee money on the way
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