Curl-rust POST request example

curl-rust.rs

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();
}

From https://gist.github.com/michielmulders/ac274cc09af94afad4ab1a0da2a9f4c9?permalink_comment_id=4308317#gistcomment-4308317:

Before the perform and after the transfer.read_function() insert:

transfer.write_function(|data| {
html_data = String::from_utf8(Vec::from(data)).unwrap();
Ok(data.len())
}).unwrap();

and after the perform:

println!("HTML body {:#?}", html_data);