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	http-parser.js	1985-10-26 08:15	13K

# HTTP Parser

This library parses HTTP protocol for requests and responses.  It was created to replace `http_parser.c` since calling C++ function from JS is really slow in V8.  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.

This is packaged as a standalone npm module.  To use in node, monkeypatch HTTPParser.

```js
// Monkey patch before you require http for the first time.
process.binding('http_parser').HTTPParser = require('http-parser-js').HTTPParser;

var http = require('http');
// ...
```

## Testing

Simply do `npm test`. The tests are copied from node and mscedex/io.js, with some modifcations.

## Status

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.

### Node Versions

`http-parser-js` should work via monkey-patching on Node v6-v11, and v13.

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.

## License

MIT. See LICENSE.md