Last time I checked Socket.IO doesn't support GZip compression. I found that, es... | Hacker News

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		maarten on Oct 26, 2012 \| parent \| context \| favorite \| on: A Node.js speed dilemma: AJAX or Socket.IO? Last time I checked Socket.IO doesn't support GZip compression. I found that, especially on mobile connections with larger datasets, it's just faster to use AJAX requests for client->server data requests, in combination with Socket.IO for fast server->client updates/notifications.

martindale on Oct 26, 2012 [–]

It does in fact support gzip ( see: https://github.com/LearnBoost/socket.io/wiki/Configuring-Soc... ), but there's an outstanding issue with spawning the gzip process ( see: https://github.com/LearnBoost/socket.io/issues/932#issuecomm... ).

This should be fixed in the upcoming update to zlib.

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