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31 lines
764 B
Rust
31 lines
764 B
Rust
extern crate reqwest;
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use std::error::Error;
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use std::io::{self, Write};
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fn http_get_main(url: &str) -> Result<(), Box<Error>> {
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// Send the HTTP request and get a response.
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let mut response = reqwest::get(url)?;
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if !response.status().is_success() {
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Err(format!("{}", response.status()))?;
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}
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// Read the response body and write it to stdout.
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let stdout = io::stdout();
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io::copy(&mut response, &mut stdout.lock())?;
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Ok(())
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}
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fn main() {
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let args: Vec<String> = std::env::args().collect();
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if args.len() != 2 {
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writeln!(io::stderr(), "usage: http-get URL").unwrap();
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return;
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}
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if let Err(err) = http_get_main(&args[1]) {
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writeln!(io::stderr(), "error: {}", err).unwrap();
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}
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}
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