This script uses [[https://crates.io/crates/reqwest|reqwest]].
Add the following to your `Cargo.toml`:

  [dependencies]
  reqwest = "0.9.9"


The //main.rs// looks like this:

    extern crate reqwest;
    
    use std::collections::HashMap;
    
    fn main() -> Result<(), Box<std::error::Error>> {
        let mut jrpc = HashMap::new();
        jrpc.insert("id", "1");
        jrpc.insert("method", "backend_info");
        jrpc.insert("params", "");
        
        let client = reqwest::Client::new();
        let mut response = client.post("https://YOURSERVER.NAME.TLD:4447/rpc")
            .basic_auth("YOUR_USERNAME_HERE", Some("PASSW0RDZ_HERE"))
            .json(&jrpc)
            .send()?;
        println!("Headers: {:#?}", response);
        
        let content = response.text()?;
        println!("Body: {:#?}", content);
        
        Ok(())
    }