0.3.5-alpha.7

crates/apps/game-realtime-webtransport-browser-smoke/src/browser.rs

@@ -0,0 +1,96 @@
+// file: crates/apps/game-realtime-webtransport-browser-smoke/src/browser.rs
+// version: 1
+
+use game_realtime_transport_lib::RealtimeConnection; // rust-rules: trait-import
+use game_realtime_transport_lib::RealtimeReceiver; // rust-rules: trait-import
+use game_realtime_transport_lib::RealtimeSender; // rust-rules: trait-import
+
+const CERTIFICATE_HASH_HEX_SIZE: usize = 64;
+const CERTIFICATE_HASH_SIZE: usize = 32;
+
+/// Runs one real-browser WebTransport round-trip against the supplied pinned endpoint.
+#[wasm_bindgen::prelude::wasm_bindgen]
+pub async fn run_browser_smoke(endpoint: String, certificate_sha256_hex: String) -> Result<String, wasm_bindgen::JsValue> {
+    let certificate_hash = match decode_certificate_hash(certificate_sha256_hex.as_str()) {
+        Ok(value) => game_realtime_webtransport_lib::WebTransportCertificateHash::from_sha256(value),
+        Err(error) => return Err(wasm_bindgen::JsValue::from_str(error.as_str())),
+    };
+    let transport = game_realtime_webtransport_lib::WebTransportConfig::default()
+        .with_connect_timeout(std::time::Duration::from_secs(5))
+        .with_primary_stream_timeout(std::time::Duration::from_secs(5))
+        .with_send_timeout(std::time::Duration::from_secs(5));
+    let config = match game_realtime_webtransport_lib::WebTransportClientConfig::new(endpoint.as_str(), certificate_hash) {
+        Ok(value) => value.with_transport_config(transport),
+        Err(error) => return Err(js_transport_error("browser client configuration failed", error)),
+    };
+    let session = match game_realtime_webtransport_lib::connect(&config).await {
+        Ok(value) => value,
+        Err(error) => return Err(js_transport_error("browser client connection failed", error)),
+    };
+    let connection = match session.open_primary_connection().await {
+        Ok(value) => value,
+        Err(error) => return Err(js_transport_error("browser primary stream open failed", error)),
+    };
+    let (mut sender, mut receiver) = connection.split();
+    if let Err(error) = sender.send(game_realtime_transport_lib::TransportMessage::new(crate::shared::BROWSER_PAYLOAD.to_vec())).await {
+        return Err(js_transport_error("browser send failed", error));
+    }
+    let received = match receiver.receive().await {
+        Ok(value) => value,
+        Err(error) => return Err(js_transport_error("browser receive failed", error)),
+    };
+    if !receive_matches(received, crate::shared::SERVER_PAYLOAD) {
+        return Err(wasm_bindgen::JsValue::from_str("browser did not receive the expected server payload"));
+    }
+    if let Err(error) = sender.close().await {
+        return Err(js_transport_error("browser close failed", error));
+    }
+    let remote_close = match receiver.receive().await {
+        Ok(value) => value,
+        Err(error) => return Err(js_transport_error("browser close observation failed", error)),
+    };
+    if remote_close != game_realtime_transport_lib::TransportReceive::Closed {
+        return Err(wasm_bindgen::JsValue::from_str("browser did not observe the server FIN"));
+    }
+    return Ok(String::from("game-realtime-webtransport-browser-smoke: PASS"));
+}
+
+fn decode_certificate_hash(value: &str) -> Result<[u8; CERTIFICATE_HASH_SIZE], String> {
+    let encoded = value.as_bytes();
+    if encoded.len() != CERTIFICATE_HASH_HEX_SIZE {
+        return Err(String::from("certificate SHA-256 hash must contain exactly 64 hexadecimal characters"));
+    }
+    let mut decoded = [0_u8; CERTIFICATE_HASH_SIZE];
+    for index in 0..CERTIFICATE_HASH_SIZE {
+        let high = match hex_nibble(encoded[index * 2]) {
+            Some(value) => value,
+            None => return Err(String::from("certificate SHA-256 hash contains a non-hexadecimal character")),
+        };
+        let low = match hex_nibble(encoded[index * 2 + 1]) {
+            Some(value) => value,
+            None => return Err(String::from("certificate SHA-256 hash contains a non-hexadecimal character")),
+        };
+        decoded[index] = (high << 4) | low;
+    }
+    return Ok(decoded);
+}
+
+fn hex_nibble(value: u8) -> Option<u8> {
+    return match value {
+        b'0'..=b'9' => Some(value - b'0'),
+        b'a'..=b'f' => Some(value - b'a' + 10),
+        b'A'..=b'F' => Some(value - b'A' + 10),
+        _ => None,
+    };
+}
+
+fn js_transport_error(context: &str, error: game_realtime_transport_lib::TransportError) -> wasm_bindgen::JsValue {
+    return wasm_bindgen::JsValue::from_str(format!("{context}: {error}").as_str());
+}
+
+fn receive_matches(receive: game_realtime_transport_lib::TransportReceive, expected: &[u8]) -> bool {
+    return match receive {
+        game_realtime_transport_lib::TransportReceive::Message(message) => message.as_bytes() == expected,
+        game_realtime_transport_lib::TransportReceive::Closed => false,
+    };
+}

crates/apps/game-realtime-webtransport-browser-smoke/src/lib.rs

@@ -0,0 +1,17 @@
+// file: crates/apps/game-realtime-webtransport-browser-smoke/src/lib.rs
+// version: 1
+
+#![warn(missing_docs)]
+#![deny(unreachable_pub)]
+#![forbid(unsafe_code)]
+
+//! WebAssembly adapter for the real-browser WebTransport smoke.
+
+#[cfg(target_arch = "wasm32")]
+mod browser;
+#[cfg(target_arch = "wasm32")]
+mod shared;
+
+#[cfg(target_arch = "wasm32")]
+/// Re-export of the browser smoke entry point exposed through wasm-bindgen.
+pub use self::browser::run_browser_smoke;

crates/apps/game-realtime-webtransport-browser-smoke/src/main.rs

@@ -0,0 +1,144 @@
+// file: crates/apps/game-realtime-webtransport-browser-smoke/src/main.rs
+// version: 1
+
+#![warn(missing_docs)]
+#![deny(unreachable_pub)]
+#![forbid(unsafe_code)]
+
+//! Native peer for the real-browser WebTransport smoke.
+
+#[cfg(not(target_arch = "wasm32"))]
+use game_realtime_transport_lib::RealtimeConnection; // rust-rules: trait-import
+#[cfg(not(target_arch = "wasm32"))]
+use game_realtime_transport_lib::RealtimeReceiver; // rust-rules: trait-import
+#[cfg(not(target_arch = "wasm32"))]
+use game_realtime_transport_lib::RealtimeSender; // rust-rules: trait-import
+
+#[cfg(not(target_arch = "wasm32"))]
+mod shared;
+
+#[cfg(not(target_arch = "wasm32"))]
+const BROWSER_HOST_URL: &str = "http://127.0.0.1:1435/main.html";
+#[cfg(not(target_arch = "wasm32"))]
+const BROWSER_SMOKE_TIMEOUT: std::time::Duration = std::time::Duration::from_secs(120);
+#[cfg(not(target_arch = "wasm32"))]
+const TRACING_TARGET: &str = "games::realtime::webtransport::browser-smoke";
+
+#[cfg(not(target_arch = "wasm32"))]
+#[tokio::main(flavor = "current_thread")]
+async fn main() -> std::process::ExitCode {
+    let _logging_guard = match game_logging_lib::init_console_tracing() {
+        std::result::Result::Ok(guard) => guard,
+        std::result::Result::Err(error) => {
+            eprintln!("failed to initialize browser WebTransport smoke tracing: {error}");
+            return std::process::ExitCode::FAILURE;
+        },
+    };
+    let prepared = match prepare_listener() {
+        Ok(value) => value,
+        Err(error) => {
+            tracing::error!(target: TRACING_TARGET, detail = error.as_str(), "browser WebTransport smoke preparation failed");
+            eprintln!("game-realtime-webtransport-browser-smoke: FAIL: {error}");
+            return std::process::ExitCode::FAILURE;
+        },
+    };
+    let (mut listener, endpoint, certificate_hash_hex) = prepared;
+    let browser_url = format!("{BROWSER_HOST_URL}?endpoint={endpoint}&sha256={certificate_hash_hex}");
+    tracing::info!(target: TRACING_TARGET, endpoint = endpoint.as_str(), "browser WebTransport smoke peer ready");
+    println!("game-realtime-webtransport-browser-smoke: ENDPOINT={endpoint}");
+    println!("game-realtime-webtransport-browser-smoke: CERT_SHA256={certificate_hash_hex}");
+    println!("game-realtime-webtransport-browser-smoke: OPEN={browser_url}");
+    let result = tokio::time::timeout(BROWSER_SMOKE_TIMEOUT, serve_browser(&mut listener)).await;
+    return match result {
+        Ok(Ok(())) => {
+            tracing::info!(target: TRACING_TARGET, "browser WebTransport smoke passed");
+            println!("game-realtime-webtransport-browser-smoke: PASS");
+            std::process::ExitCode::SUCCESS
+        },
+        Ok(Err(error)) => {
+            tracing::error!(target: TRACING_TARGET, detail = error.as_str(), "browser WebTransport smoke failed");
+            eprintln!("game-realtime-webtransport-browser-smoke: FAIL: {error}");
+            std::process::ExitCode::FAILURE
+        },
+        Err(_) => {
+            tracing::error!(target: TRACING_TARGET, timeout_ms = BROWSER_SMOKE_TIMEOUT.as_millis(), "browser WebTransport smoke timed out");
+            eprintln!("game-realtime-webtransport-browser-smoke: FAIL: browser did not complete the smoke before the launcher deadline");
+            std::process::ExitCode::FAILURE
+        },
+    };
+}
+
+#[cfg(target_arch = "wasm32")]
+fn main() {
+    return;
+}
+
+#[cfg(not(target_arch = "wasm32"))]
+fn prepare_listener() -> Result<(game_realtime_webtransport_lib::WebTransportListener, String, String), String> {
+    let identity = match game_realtime_webtransport_lib::WebTransportServerIdentity::generate_loopback() {
+        Ok(value) => value,
+        Err(error) => return Err(format!("loopback identity generation failed: {error}")),
+    };
+    let certificate_hash_hex = encode_hex(identity.certificate_hash().as_bytes());
+    let bind_address = std::net::SocketAddr::from(([127, 0, 0, 1], 0));
+    let server_config = game_realtime_webtransport_lib::WebTransportServerConfig::new(bind_address, identity);
+    let listener = match game_realtime_webtransport_lib::WebTransportListener::bind(server_config) {
+        Ok(value) => value,
+        Err(error) => return Err(format!("listener bind failed: {error}")),
+    };
+    let endpoint = format!("https://{}/browser-smoke", listener.local_addr());
+    return Ok((listener, endpoint, certificate_hash_hex));
+}
+
+#[cfg(not(target_arch = "wasm32"))]
+async fn serve_browser(listener: &mut game_realtime_webtransport_lib::WebTransportListener) -> Result<(), String> {
+    let session = match listener.accept().await {
+        Ok(value) => value,
+        Err(error) => return Err(format!("server accept failed: {error}")),
+    };
+    let connection = match session.accept_primary_connection().await {
+        Ok(value) => value,
+        Err(error) => return Err(format!("server primary stream accept failed: {error}")),
+    };
+    let (mut sender, mut receiver) = connection.split();
+    let browser_received = match receiver.receive().await {
+        Ok(value) => value,
+        Err(error) => return Err(format!("server receive failed: {error}")),
+    };
+    if !receive_matches(browser_received, shared::BROWSER_PAYLOAD) {
+        return Err(String::from("server did not receive the expected browser payload"));
+    }
+    if let Err(error) = sender.send(game_realtime_transport_lib::TransportMessage::new(shared::SERVER_PAYLOAD.to_vec())).await {
+        return Err(format!("server send failed: {error}"));
+    }
+    let browser_close = match receiver.receive().await {
+        Ok(value) => value,
+        Err(error) => return Err(format!("server close observation failed: {error}")),
+    };
+    if browser_close != game_realtime_transport_lib::TransportReceive::Closed {
+        return Err(String::from("server did not observe the browser FIN"));
+    }
+    if let Err(error) = sender.close().await {
+        return Err(format!("server close failed: {error}"));
+    }
+    return Ok(());
+}
+
+#[cfg(not(target_arch = "wasm32"))]
+fn encode_hex(bytes: &[u8]) -> String {
+    const HEX: &[u8; 16] = b"0123456789abcdef";
+    let mut encoded = String::with_capacity(bytes.len() * 2);
+    for byte in bytes {
+        encoded.push(char::from(HEX[usize::from(byte >> 4)]));
+        encoded.push(char::from(HEX[usize::from(byte & 0x0f)]));
+    }
+    return encoded;
+}
+
+#[cfg(not(target_arch = "wasm32"))]
+fn receive_matches(receive: game_realtime_transport_lib::TransportReceive, expected: &[u8]) -> bool {
+    return match receive {
+        game_realtime_transport_lib::TransportReceive::Message(message) => message.as_bytes() == expected,
+        game_realtime_transport_lib::TransportReceive::Closed => false,
+    };
+}

crates/apps/game-realtime-webtransport-browser-smoke/src/shared.rs

@@ -0,0 +1,7 @@
+// file: crates/apps/game-realtime-webtransport-browser-smoke/src/shared.rs
+// version: 1
+
+/// Binary payload sent from the real browser to the native smoke peer.
+pub(crate) const BROWSER_PAYLOAD: &[u8] = b"games.sasedev-webtransport-browser-client-smoke";
+/// Binary payload sent from the native smoke peer back to the real browser.
+pub(crate) const SERVER_PAYLOAD: &[u8] = b"games.sasedev-webtransport-browser-server-smoke";