Uhm so ive been working a TCP server using only std io and net and httparser. Yet, i am unable to get past this error mostly due to how vague it is. The error im talking about is:

“called Result::unwrap() on an Err value: Token”

The code that i believe might be at work here might be:

1. The section of code that checks the size of the stream in bytes to make a custom vector with the size of the size the incoming request.

2. The headers variable

3. The httparse Request

to be completely fair these are just guesses so… not much help but atleast that what i believe i might have done wrong.

without further ado here is the relevant function:

fn handle_connection(mut stream: TcpStream) {
    
    let mut buffer = [0; 2048];
    let stream_data_size = stream.read(&mut buffer).unwrap();

    let buffer = vec![0; stream_data_size];

    let mut headers = [httparse::EMPTY_HEADER; 4];
    let mut req = httparse::Request::new(&mut headers);
    println!("{buffer:?}");
    let res = req.parse(&buffer).unwrap(); // error is here!! (I believe)

    let buf_reader = BufReader::new(&mut stream);
    
    let http_request: Vec<_> = buf_reader
        .lines()
        .map(|result| result.unwrap())
        .take_while(|line| !line.is_empty())
        .collect();

    println!("Request: {:#?}", http_request);

    let response = "HTTP/1.1 200 OKrnrn";
    stream.write_all(response.as_bytes()).unwrap();
    stream.flush().unwrap();

    println!("Headers: {:?}", res);
}

I expected this function to:

1. be called when a request is done to the relevant address (working)
2. be able to read and write (return) the request (working)
3. access the headers and body (not working)