Where's the WebSocket (continuation) frame parsing code?

[guest271314]

I'm working on writing a WebSocket server in JavaScript that will be used in the browser. I've got the base server working, however the server fails to implement parsing continuation frames, resulting in messages at or over 65536 length throwing an error. I'm thinking I can either extract the continue frame parsing part or compile Mongoose's continuation frame parts to WASM to use in the browser. Where's the code that parses WebSocket continuation frames? Thanks.

[scaprile]

WebSocket code is in src/ws.c

[guest271314]

I'm looking specifically for the part that handles continuation frames, I think, so I can process messages from the client over 65536. My idea is to convert the C to JavaScript by hand, or compile the C to WASM. I already have access to the raw request. Can you kindly link to those lines?