What's up with _unixOptions?

[pimterry]

I'm looking at ways to improve my request fingerprints to avoid blocks, and I ran into this project. Lots of interesting tricks here! Excellent work.

One that I found interesting was setting _unixOptions with additional TLS settings:

got-scraping/src/hooks/tls.ts

Lines 219 to 224 in 8d9d4f1

	options._unixOptions = {
	// @ts-expect-error Private use
	...options._unixOptions,
	secureOptions: secureOptions[browser],
	requestOCSP: requestOCSP[browser],
	};

. I can't find any info about this anywhere, even in Node's source, and it's not mentioned in your docs. Can you explain at all what this does?

[szmarczak]

It's a Got internal option. Got parses UNIX socket path into options._unixOptions which is just a plain object that is later merged with other options. It's used to enable insecure HTTP parser. For example Insomnia was sending broken (non-spec) headers to check whether the parser is lenient or not. Node.js' by default is not, but browser allow broken headers. I don't think they do that anymore.

https://github.com/sindresorhus/got/blob/e032b60ff3285403b8f9627dcdd32aae39867d7a/source/core/options.ts#L1442
https://github.com/sindresorhus/got/blob/e032b60ff3285403b8f9627dcdd32aae39867d7a/source/core/options.ts#L2428

[pimterry]

Super helpful, thanks! 👍