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44 lines
1.8 KiB
44 lines
1.8 KiB
2 years ago
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# HTTP Parser
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This library parses HTTP protocol for requests and responses.
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It was created to replace `http_parser.c` since calling C++ functions from JS is really slow in V8.
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However, it is now primarily useful in having a more flexible/tolerant HTTP parser when dealing with legacy services that do not meet the strict HTTP parsing rules Node's parser follows.
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This is packaged as a standalone npm module.
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To use in node, monkeypatch HTTPParser.
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```js
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// Monkey patch before you require http for the first time.
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process.binding('http_parser').HTTPParser = require('http-parser-js').HTTPParser;
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var http = require('http');
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// ...
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```
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## Testing
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Simply run `npm test`.
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The tests are copied from node and mscedex/io.js, with some modifcations.
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## Status
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This should now be usable in any node application, it now supports (nearly) everything `http_parser.c` does while still being tolerant with corrupted headers, and other kinds of malformed data.
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### Node versions
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`http-parser-js` should work via monkey-patching on Node v6-v11, and v13-14.
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Node v12.x renamed the internal http parser, and did not expose it for monkey-patching, so to be able to monkey-patch on Node v12, you must run `node --http-parser=legacy file.js` to opt in to the old, monkey-patchable http_parser binding.
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## Standalone usage
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While this module is intended to be used as a replacement for the internal Node.js parser, it can be used as a standalone parser. The [`standalone-example.js`](standalone-example.js) demonstrates how to use the somewhat awkward API (coming from compatibility with the Node.js internals) to parse HTTP from raw Buffers.
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## License
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MIT.
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See [LICENSE.md](LICENSE.md)
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