extern crate curl;

use std::io::{stdout, Write};

use curl::easy::Easy;

// 打印一个 web页面 到 stdout
fn main() {
    let mut easy = Easy::new();
    easy.url("https://www.rust-lang.org/").unwrap();
    easy.write_function(|data| {
        stdout().write_all(data).unwrap();
        Ok(data.len())
    }).unwrap();
    easy.perform().unwrap();

    println!("{}", easy.response_code().unwrap());
}

extern crate curl;

use curl::easy::Easy;

// 捕获 output(web页面) 到 一个本地变量 `Vec`.
fn main() {
    let mut dst = Vec::new();
    let mut easy = Easy::new();
    easy.url("https://www.rust-lang.org/").unwrap();

    let mut transfer = easy.transfer();
    transfer.write_function(|data| {
        dst.extend_from_slice(data);
        Ok(data.len())
    }).unwrap();
    transfer.perform().unwrap();
}

extern crate curl;

use std::io::Read;
use curl::easy::Easy;

fn main() {
    let mut data = "this is the body".as_bytes();

    let mut easy = Easy::new();
    easy.url("http://www.example.com/upload").unwrap();
    easy.post(true).unwrap();
    easy.post_field_size(data.len() as u64).unwrap();

    let mut transfer = easy.transfer();
    transfer.read_function(|buf| {
        Ok(data.read(buf).unwrap_or(0))
    }).unwrap();
    transfer.perform().unwrap();
}

extern crate curl;

use curl::easy::{Easy, List};

fn main() {
    let mut easy = Easy::new();
    easy.url("http://www.example.com").unwrap();

    let mut list = List::new();
    list.append("Authorization: Basic QWxhZGRpbjpvcGVuIHNlc2FtZQ==").unwrap();
    easy.http_headers(list).unwrap();
    easy.perform().unwrap();
}

extern crate curl;

use curl::easy::Easy;

fn main() {
    let mut handle = Easy::new();

    handle.url("http://www.example.com/foo").unwrap();
    handle.perform().unwrap();

    handle.url("http://www.example.com/bar").unwrap();
    handle.perform().unwrap();
}