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62 lines
1.7 KiB
Markdown
62 lines
1.7 KiB
Markdown
# Defold websocket extension
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[](https://github.com/defold/extension-websocket/actions)
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## Installation
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To use this library in your Defold project, add the following URL to your `game.project` dependencies:
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https://github.com/defold/extension-websocket/archive/master.zip
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We recommend using a link to a zip file of a [specific release](https://github.com/defold/extension-websocket/releases).
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## API reference
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https://defold.com/extension-websocket/
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https://defold.com/extension-websocket/websocket_api/
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## Debugging
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In order to make it easier to debug this extension, we provide a `game.project` setting `websocket.debug` (edit `game.project` as text and add):
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```
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[websocket]
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debug = level
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```
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Set it to:
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* `0` to disable debugging (i.e. no debug output).
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* `1` to display state changes.
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* `2` to display the messages sent and received.
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## External resources
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To verify that your websocket server works, you can test it with some tools.
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* [websocat](https://github.com/vi/websocat)
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Or, you can test your server on this web page:
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* https://www.websocket.org/echo.html
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To monitor all the packets sent to/from the client/server, you can use e.g.
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* [Wireshark](https://www.wireshark.org)
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For command line debugging, there's
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* tcpdump: `sudo tcpdump -X -s0 -ilo0 port 8080 ` (example for local ws:// connection)
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* tcpdump: `sudo tcpdump -X -s0 host echo.websocket.org` (Monitors packets to/from echo.websocket.org)
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## Credits
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This extension makes use of the C library WSlay by @tatsuhiro-t:
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* https://github.com/tatsuhiro-t/wslay
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The test server used by the example:
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* https://www.lob.com/blog/websocket-org-is-down-here-is-an-alternative
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