cargo.toml

[package]
name = "hyper02"
version = "0.1.0"
authors = ["fliar"]

[dependencies]
hyper-tls = "0.3.0"
futures = "0.1.22"
tokio = "0.1"
hyper = "0.12"

main.rs

extern crate futures;
extern crate hyper;
extern crate hyper_tls;
extern crate tokio;

use futures::{future, Future};
use hyper::header::CONTENT_TYPE;
use hyper::rt::Stream;
use hyper::{Body, Client, Method, Request};
use hyper_tls::HttpsConnector;
use std::fs::File;
use std::io::prelude::*;
use std::io::{self, Write};

const BOUNDARY: &'static str = "------------------------ea3bbcf87c101592";

fn main() {
    tokio::run(future::lazy(|| {
        let https = HttpsConnector::new(4).unwrap();
        let client = Client::builder().build::<_, hyper::Body>(https);

        let mut req = Request::new(Body::from(image_data()));
        
        req.headers_mut().insert(
            CONTENT_TYPE,
            format!("multipart/form-data; boundary={}", BOUNDARY)
                .parse()
                .unwrap(),
        );
        *req.method_mut() = Method::POST;
        *req.uri_mut() = "https://httpbin.org/post".parse().unwrap();

        client
            .request(req)
            .and_then(|res| {
                println!("status: {}", res.status());

                res.into_body().for_each(|chunk| {
                    io::stdout()
                        .write_all(&chunk)
                        .map_err(|e| panic!("stdout error: {}", e))
                })
            })
            .map_err(|e| println!("request error: {}", e))
    }));
}

fn image_data() -> Vec<u8> {
    let mut result: Vec<u8> = Vec::new();
    result.extend_from_slice(format!("--{}\r\n", BOUNDARY).as_bytes());
    result.extend_from_slice(format!("Content-Disposition: form-data; name=\"text\"\r\n").as_bytes());
    result.extend_from_slice("title\r\n".as_bytes());
    result.extend_from_slice(format!("--{}\r\n", BOUNDARY).as_bytes());
    result.extend_from_slice(format!("Content-Disposition: form-data; name=\"smfile\"; filename=\"11.jpg\"\r\n").as_bytes());
    result.extend_from_slice("Content-Type: image/jpeg\r\n\r\n".as_bytes());
    
    let mut f = File::open("11.jpg").unwrap();
    let mut file_data = Vec::new();
    f.read_to_end(&mut file_data).unwrap();

    result.append(&mut file_data);

    result.extend_from_slice(format!("--{}--\r\n", BOUNDARY).as_bytes());
    result
}