lest 0.2.1

A modular approach to a web server. Based on actix-web.
Documentation 
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use actix_web::HttpRequest;

fn strip_port(host: &str) -> &str {
    host.split(":").collect::<Vec<&str>>()[0]
}

pub fn extract_host(req: &HttpRequest) -> Option<String> {
    let req_host = req.uri().host();
    let authority = req.uri().clone().into_parts().authority;
    let header_host = req.headers().get("host");
    if req_host.is_some() {
        let host = req_host.unwrap().to_string();
        return Some(strip_port(&host).to_string());
    }
    if authority.is_some() {
        let authority = authority.unwrap().to_string();
        let host = authority.split(":").collect::<Vec<&str>>()[0];
        let host = strip_port(&host);
        return Some(host.to_string());
    }
    if header_host.is_some() {
        let host = header_host.unwrap().to_str().unwrap().to_string();
        return Some(strip_port(&host).to_string());
    }
    None
}

pub fn extract_port(req: &HttpRequest) -> Option<u16> {
    let req_host = req.uri().host();
    let authority = req.uri().clone().into_parts().authority;
    let header_host = req.headers().get("host");
    if req_host.is_some() {
        let host = req_host.unwrap().to_string();
        let port = host.split(":").collect::<Vec<&str>>()[1];
        return Some(port.parse::<u16>().unwrap());
    }
    if authority.is_some() {
        let authority = authority.unwrap().to_string();
        let port = authority.split(":").collect::<Vec<&str>>()[1];
        return Some(port.parse::<u16>().unwrap());
    }
    if header_host.is_some() {
        let host = header_host.unwrap().to_str().unwrap().to_string();
        let port = host.split(":").collect::<Vec<&str>>()[1];
        return Some(port.parse::<u16>().unwrap());
    }
    None
}

pub fn extract_real_ip(req: &HttpRequest) -> Option<String> {
    let header_precedence: [&str; 4] = [
        "cf-connecting-ip",
        "x-real-ip",
        "x-forwarded-for",
        "x-client-ip"
    ];
    for header in header_precedence.iter() {
        let ip = req.headers().get(header.to_string());
        if ip.is_some() {
            return Some(ip.unwrap().to_str().unwrap().to_string());
        }
    }
    let ip = req.peer_addr();
    if ip.is_none() {
        return None;
    }
    let ip = ip.unwrap().ip().to_string();
    Some(ip)
}