Packet loss while receiving UDP broadcast in android device

Question

For receiving UDP broadcast packets from the server to an android device, i used a service class and listen for packets in a thread. It receives the packet successfully. The

Answer 1

I suppose that you are capturing only a single packet by saying

socket.receive(packet);

This is a Blocking I/O call which will wait infinitely until it receives a packet so once first packet arrives it is done waiting and next command executes i.e

messQueue.add(packet);

However when multiple packets are been received you need to continue receiving packets. in your case you just stopped receiving packages after arrival of first package

Note: UDP being a un-reliable protocol doesn't guarantee packet delivery so there might be a case a packet is lost , However this can't be a problem on every run of your program , However a nice way to check whether the packet is hitting your machine and problem is within your application (application is not able to handle the packets recieved) use tcpdump (it's a command-line utility for linux-based OS or MAC) use the following command

 sudo tcpdump -i  host 

Example:

sudo tcpdump -i en1 host 187.156.13.5

(if tcpdump command not found then go forward and install it)

By using this command you will see packets pumping in from destination ump server on terminal if you see more then one packets arriving then you would be sure that packets are arriving at machine , However application falls short to address the packet

it might help