We actually use the original node.js parser code (http_parser), which was originally based _I believe_ on the nginx parser. The Node people have since moved on

We actually use the original node.js parser code (http_parser), which was originally based _I believe_ on the nginx parser. The Node people have since moved on to generating the C parser code with Typescript because the original code was too difficult to maintain (llparse). Like I said, human-readable HTTP needs to die, but it's far too late.