Handling http request with variable parameters

[hyousef]

In the building web example in the book we have these 2 lines for illustration:

    let get = b"GET / HTTP/1.1\r\n";
    let sleep = b"GET /sleep HTTP/1.1\r\n";

What if I wanted to get variable parameter like:

let book =  b"GET /book/<country>/<category> HTTP/1.1\r\n";

Where <country> and <category> are variable depending on what the user enter.

I know there are frameworks that do this for me, but interested in understanding it without using other crate.

[2e71828]

You could do something like this, but there are likely lots of edge cases it doesn’t handle well: (Playground)

    // previously extracted from request
    let status_line = "GET /book/us/biography HTTP/1.1";

    match *(status_line.split_whitespace().collect::<Vec<_>>()) {
        ["GET", path, "HTTP/1.1"] => match *(path.split("/").collect::<Vec<_>>()){
            ["", "book", country, category] => {
                println!("Country: {}", country);
                println!("Category: {}", category);
            },
            _ => panic!("404 Not Found")
        },
        _ => panic!("Unsupported request")
    }