SetCookie for the next HTTP request using reqwest 0.8.0

main.rs

extern crate reqwest;
extern crate cookie;

use std::time::Duration;

use cookie::{Cookie, CookieJar};
use reqwest::header::{Headers, SetCookie, UserAgent};

fn construct_headers(cookies: &SetCookie) -> Headers {
    let mut headers = Headers::new();
    headers.set(UserAgent::new("autotool"));

    let mut jar = CookieJar::new();
    for cookie in cookies.iter() {
        jar.add_original(Cookie::parse(cookie.to_owned()).unwrap());
    }

    let mut cookie = reqwest::header::Cookie::new();
    for cc in jar.iter() {
        if cc.name().starts_with("::SID:") {
            cookie.append(cc.name().to_string(), cc.value().to_string());
        }
    }

    if cookie.iter().count() > 0 {
        headers.set(cookie);
    }

    headers
}

fn try_main() -> Result<(), Box<::std::error::Error>> {
    let client = reqwest::Client::builder()
        .gzip(true)
        .redirect(reqwest::RedirectPolicy::none())
        .timeout(Duration::from_secs(10))
        .build()?;

    let url = "https://httpbin.org/cookies/set?k1=v1&::SID:REREWEW@#@#@$#&k2=v2";
    let response = client.head(url).send()?;

    println!(
        "Status-Code: {}\n{:#?}",
        response.status(),
        response.headers()
    );

    let cookies = response.headers().get::<SetCookie>().ok_or(
        "cookie not set by the server",
    )?;

    println!("{:?} H", construct_headers(cookies));

    Ok(())
}

fn main() {
    try_main().unwrap();
}