Detect client connection drop using Jersey/Java

Question

I have created Restful Web Services using Jersey over Java. My client is an iOS app which sends user data after every 1 minute. What would be the best way to detect that client has stopped sending the data due to either network lost or app killed by the user. I want to detect it on my API server.

How about having a timestamp for the last request received for all connected clients in a list and have a thread run through the list and identify those older than 2 minutes? — Ravindra HV, May 17 '16 at 20:19
I am thinking on similar lines. Trying to use Redis to cache the keys with expire time,refreshing the keys on each call and creating a callback on expiry — Aakash Mangal, May 17 '16 at 20:52
I am able to do it using Redis notification callback mechanism. For reference I used 1. http://basrikahveci.com/a-simple-jedis-publish-subscribe-example/ 2. http://stackoverflow.com/questions/26406303/redis-key-expire-notification-with-jedis — Aakash Mangal, May 18 '16 at 18:10
Good to hear that. You could answer your own question and accept it. It could help someone else. — Ravindra HV, May 18 '16 at 18:41

score 0 · Accepted Answer · edited May 23 '17 at 11:58

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I am able to do it using Redis event notification mechanism. For reference I used

basrikahveci.com/a-simple-jedis-publish-subscribe-example
Redis Key expire notification with Jedis

edited May 23 '17 at 11:58

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answered May 18 '16 at 18:48

Aakash Mangal

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Detect client connection drop using Jersey/Java

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