Crate parallel_getter

When fetching a file from a web server via GET, it is possible to define a range of bytes to receive per request. This allows the possibility of using multiple GET requests on the same URL to increase the throughput of a transfer for that file. Once the parts have been fetched, they are concatenated into a single file.

Therefore, this crate will make it trivial to set up a parallel GET request, with an API that provides a configurable number of threads and an optional callback to monitor the progress of a transfer.

Example

extern crate parallel_getter;

use parallel_getter::ParallelGetter;
use std::fs::File;

fn main() {
    let url = "http://apt.pop-os.org/proprietary/pool/bionic/main/\
        binary-amd64/a/atom/atom_1.31.1_amd64.deb";
    let mut file = File::create("atom_1.31.1_amd64.deb").unwrap();
    let result = ParallelGetter::new(url, &mut file)
        .threads(4)
        .callback(1000, Box::new(|p, t| {
            println!(
                "{} of {} KiB downloaded",
                p / 1024,
                t / 1024);
        }))
        .get();

    if let Err(why) = result {
        eprintln!("errored: {}", why);
    }
}

Structs

ParallelGetter

Type for constructing parallel GET requests.