maintaining persistent http connection

My android app sends data to a servlet every 10 seconds. the servlet receives the very first request and responds back开发者_如何学JAVA. but the servlet doesn't receive the second set of data that the client sends after the next 10 seconds. could some one please tel me how do i go about doing this. is it something related to session?

Http is not a persistent connection protocol. You should consider issuing one http request for each set of data you need to send.

If a persistent connection is mandatory (but I don't really see what would force you to do that), you have to work with the TCP protocol... and you won't be able to use a servlet on the server-side but a specific application listening to a specific TCP port.

This sounds very much like as if you're reusing an existing URLConnection instead of creating a new one for each request and that you're suppressing the exceptions by empty catch blocks and/or ignoring the stderr.

For each independent request, you have to create a new URLConnection.

URL url = new URL("http://example.com");

// First request.
URLConnection connection1 = url.openConnection();
// Process it...

// Second request.
URLConnection connection2 = url.openConnection();
// Process it...

// Etc...

The session management only comes into picture when the servlet is storing something in the HttpSession which you would like to re-access in the subsequent requests. This doesn't seem to be the case here.