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use super::{async_trait, Body, Error, HttpClient, Request, Response};
use async_std::io::BufReader;
use isahc::{http, ResponseExt};
#[derive(Debug)]
pub struct IsahcClient(isahc::HttpClient);
impl Default for IsahcClient {
fn default() -> Self {
Self::new()
}
}
impl IsahcClient {
pub fn new() -> Self {
Self::from_client(isahc::HttpClient::new().unwrap())
}
pub fn from_client(client: isahc::HttpClient) -> Self {
Self(client)
}
}
#[async_trait]
impl HttpClient for IsahcClient {
async fn send(&self, mut req: Request) -> Result<Response, Error> {
let mut builder = http::Request::builder()
.uri(req.url().as_str())
.method(http::Method::from_bytes(req.method().to_string().as_bytes()).unwrap());
for (name, value) in req.iter() {
builder = builder.header(name.as_str(), value.as_str());
}
let body = req.take_body();
let body = match body.len() {
Some(len) => isahc::Body::from_reader_sized(body, len as u64),
None => isahc::Body::from_reader(body),
};
let request = builder.body(body).unwrap();
let res = self.0.send_async(request).await.map_err(Error::from)?;
let maybe_metrics = res.metrics().cloned();
let (parts, body) = res.into_parts();
let body = Body::from_reader(BufReader::new(body), None);
let mut response = http_types::Response::new(parts.status.as_u16());
for (name, value) in &parts.headers {
response.insert_header(name.as_str(), value.to_str().unwrap());
}
if let Some(metrics) = maybe_metrics {
response.ext_mut().insert(metrics);
}
response.set_body(body);
Ok(response)
}
}
#[cfg(test)]
mod tests {
use super::*;
use async_std::prelude::*;
use async_std::task;
use http_types::url::Url;
use http_types::Result;
use std::time::Duration;
fn build_test_request(url: Url) -> Request {
let mut req = Request::new(http_types::Method::Post, url);
req.set_body("hello");
req.append_header("test", "value");
req
}
#[async_std::test]
async fn basic_functionality() -> Result<()> {
let port = portpicker::pick_unused_port().unwrap();
let mut app = tide::new();
app.at("/").all(|mut r: tide::Request<()>| async move {
let mut response = tide::Response::new(http_types::StatusCode::Ok);
response.set_body(r.body_bytes().await.unwrap());
Ok(response)
});
let server = task::spawn(async move {
app.listen(("localhost", port)).await?;
Result::Ok(())
});
let client = task::spawn(async move {
task::sleep(Duration::from_millis(100)).await;
let request =
build_test_request(Url::parse(&format!("http://localhost:{}/", port)).unwrap());
let mut response: Response = IsahcClient::new().send(request).await?;
assert_eq!(response.body_string().await.unwrap(), "hello");
Ok(())
});
server.race(client).await?;
Ok(())
}
}