yaak-mountain-loop/src-tauri/yaak-grpc/src/transport.rs

use hyper_rustls::{HttpsConnector, HttpsConnectorBuilder};
use hyper_util::client::legacy::connect::HttpConnector;
use hyper_util::client::legacy::Client;
use hyper_util::rt::TokioExecutor;
use tonic::body::BoxBody;

// I think ALPN breaks this because we're specifying http2_only
const WITH_ALPN: bool = false;

pub(crate) fn get_transport(validate_certificates: bool) -> Client<HttpsConnector<HttpConnector>, BoxBody> {
    let tls_config = yaak_http::tls::get_config(validate_certificates, WITH_ALPN);

    let mut http = HttpConnector::new();
    http.enforce_http(false);

    let connector =
        HttpsConnectorBuilder::new().with_tls_config(tls_config).https_or_http().enable_http2().build();

    let client = Client::builder(TokioExecutor::new())
        .pool_max_idle_per_host(0)
        .http2_only(true)
        .build(connector);

    client
}