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What exactly is the advantage of using Punjab

I have been working with XMPP related materials, and now what I have learned so far. XMPP and HTTP are two different protocols, but when you try to implement a browser-based XMPP client, XMPP traffic will be piggybacked over HTTP called XMPP-over-BOSH.

I came across Punjab, which seems like a pretty popular XMPP / BOSH connection manager and works with common XMPP servers like ejabberd and OpenFire. These regular XMPP servers such as ejabberd and Openfire seem to have built-in XMPP-over-BOSH support, so Punjab provides added functionality.

Many large sites use Punjab in their implementation of XMPP, but I could not understand why they would use it when you can directly connect the XMPP client in the browser to ejabberd or OpenFire.

Thanks.

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Many of the servers with direct BOSH support did not receive this support at an early stage. Sometimes it’s also convenient to move the BOSH proxy closer to your web infrastructure, especially before CORS is understood.

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Source: https://habr.com/ru/post/891707/

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