Maintain the Java PDA device connectivity with C# server - Not on localhost

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Project Description

---------------------------------------------------------------------Please read before you bid for this project -------------------------
No Time wasters please.
Project: Maintain multiple Java PDA devices connectivity with C# server - Not on localhost - On an external Mobile network
Skills you need to have: Java, Android, C#(Basics), Networking in Java

We have had people who have done this project before but connection wasn't permanent and kept failing to reconnect.
The PDA devices or multiple devices should be connected at all times to the server.
You will get technical difficulties from the mobile network side more than the server and internal networks.
The connection between the mobile network and PDA will keep dropping.
Make sure you test device on an external mobile network rather than using it on wifi networks(LAN)
Load testing is very important, run client on at least 3000 different devices or use one external device to run 3000 connections and make sure it is connect to the server without any IPV4 failures.
The main job is to maintain the connection. Remember it's the mobile network side you need to focus on.

Please do not bid if you think you can't do this project after reading this description.
Thank You very much for reading.

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