UDP packets & GWT

[Andre Leger]

Greetings,

I know this is not a pure GWT question, but a related one.

I have a web device that continuously sends UDP packets to a specific
IP and port. I have a java application that is able to listen to the
port and receive the packets.

What I want to do is create an OpenSocial gadget in GWT that will
somehow take the data and be displayed in the gadget. I understand
that I am not able to use the java.net.DatagramSocket and
java.net.DatagramPacket classes in GWT because javascript does not
support socket listening.

Anyone out there have a simple solution that would enable me to get
the datagram data somehow. I would appreciate any suggestions.

Thank you,

Andre

[Paul Robinson]

Run your java app on a server somewhere that can receive the UDP
packets, and then store them (in memory or in a database). GWT client
connects to your server to get the data

[gwtfanb0y]

If you want to use reverse ajax (or push ajax) i would recommend
comet.

[mariyan nenchev]

Make blocking rpc calls to the server and when datagram packet is received transform the data in some string format and unblock the async call with the string result

[Andre Leger]

For an update, what I did is output the data to an xml file on the
server, then fetch the data with a simple http GET using
RequestBuilder. To deal with SOP, I had to put the xml file on the
same domain as my shindig container.

Thanks for the help, it is always appreciated.

Andre