5d3c472228
**The `Error` is now an opaque struct**, which allows for more variants to be added freely, and the internal representation to change without being breaking changes. For inspecting an `Error`, there are several `is_*` methods to check for certain classes of errors, such as `Error::is_parse()`. The `cause` can also be inspected, like before. This likely seems like a downgrade, but more inspection can be added as needed! The `Error` now knows about more states, which gives much more context around when a certain error occurs. This is also expressed in the description and `fmt` messages. **Most places where a user would provide an error to hyper can now pass any error type** (`E: Into<Box<std::error::Error>>`). This error is passed back in relevant places, and can be useful for logging. This should make it much clearer about what error a user should provide to hyper: any it feels is relevant! Closes #1128 Closes #1130 Closes #1431 Closes #1338 BREAKING CHANGE: `Error` is no longer an enum to pattern match over, or to construct. Code will need to be updated accordingly. For body streams or `Service`s, inference might be unable to determine what error type you mean to return. Starting in Rust 1.26, you could just label that as `!` if you never return an error.
34 lines
899 B
Rust
34 lines
899 B
Rust
#![deny(warnings)]
|
|
extern crate hyper;
|
|
extern crate futures;
|
|
extern crate pretty_env_logger;
|
|
extern crate tokio;
|
|
|
|
use futures::Future;
|
|
use futures::future::lazy;
|
|
|
|
use hyper::{Body, Response};
|
|
use hyper::server::{Http, const_service, service_fn};
|
|
|
|
static PHRASE: &'static [u8] = b"Hello World!";
|
|
|
|
fn main() {
|
|
pretty_env_logger::init();
|
|
let addr = ([127, 0, 0, 1], 3000).into();
|
|
|
|
let new_service = const_service(service_fn(|_| {
|
|
//TODO: when `!` is stable, replace error type
|
|
Ok::<_, hyper::Error>(Response::new(Body::from(PHRASE)))
|
|
}));
|
|
|
|
tokio::run(lazy(move || {
|
|
let server = Http::new()
|
|
.sleep_on_errors(true)
|
|
.bind(&addr, new_service)
|
|
.unwrap();
|
|
|
|
println!("Listening on http://{} with 1 thread.", server.local_addr().unwrap());
|
|
server.run().map_err(|err| eprintln!("Server error {}", err))
|
|
}));
|
|
}
|