14 lines
503 B
Markdown
14 lines
503 B
Markdown
---
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layout: developersguide
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title: Evolution
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---
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{% include base.html %}
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# Technical Difference to openHAB 1
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There are a few technical changes in openHAB 2 that are not compatible with openHAB 1:
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- the REST API does NOT support XML nor JSON-P anymore. It is now fully realized using JSON.
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- the REST API does not support websocket access anymore - it actually completely drops "push" support and only has a simple long-polling implementation to provide a basic backward-compatibility for clients.
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