From 89c69eae8e75d2b00794087d9ef74fd4856d0f88 Mon Sep 17 00:00:00 2001
From: DanConwayDev <DanConwayDev@protonmail.com>
Date: Thu, 20 Nov 2025 21:36:09 +0000
Subject: replace actix with hyper

---
 src/http/mod.rs | 142 +++++++++++++++++++++++++++++++++++++++++++++++++-------
 1 file changed, 126 insertions(+), 16 deletions(-)

(limited to 'src/http/mod.rs')

diff --git a/src/http/mod.rs b/src/http/mod.rs
index b434c69..4690790 100644
--- a/src/http/mod.rs
+++ b/src/http/mod.rs
@@ -1,30 +1,140 @@
 /// HTTP Server Module
 ///
-/// Provides actix-web HTTP server with WebSocket upgrade support for the Nostr relay.
+/// Provides hyper HTTP server with WebSocket upgrade support for the Nostr relay.
 pub mod landing;
-pub mod websocket;
 
-use actix_web::{middleware, web, App, HttpServer};
+use std::future::Future;
+use std::net::SocketAddr;
+use std::pin::Pin;
+
+use hyper::body::Incoming;
+use hyper::header::{CONNECTION, SEC_WEBSOCKET_ACCEPT, UPGRADE};
+use hyper::server::conn::http1;
+use hyper::service::Service;
+use hyper::{Request, Response};
+use hyper_util::rt::TokioIo;
+use nostr_sdk::hashes::sha1::Hash as Sha1Hash;
+use nostr_sdk::hashes::{Hash, HashEngine};
 use nostr_relay_builder::LocalRelay;
+use tokio::net::TcpListener;
+use base64::Engine;
 
 use crate::config::Config;
 
+/// HTTP Service that serves both WebSocket (relay) and HTML landing page
+struct HttpService {
+    relay: LocalRelay,
+    config: Config,
+    remote: SocketAddr,
+}
+
+impl HttpService {
+    fn new(relay: LocalRelay, config: Config, remote: SocketAddr) -> Self {
+        Self {
+            relay,
+            config,
+            remote,
+        }
+    }
+}
+
+impl Service<Request<Incoming>> for HttpService {
+    type Response = Response<String>;
+    type Error = String;
+    type Future = Pin<Box<dyn Future<Output = Result<Self::Response, Self::Error>> + Send>>;
+
+    fn call(&self, req: Request<Incoming>) -> Self::Future {
+        let base = Response::builder().header("server", "ngit-grasp");
+
+        // Check if this is a WebSocket upgrade request
+        if let (Some(c), Some(w)) = (
+            req.headers().get("connection"),
+            req.headers().get("upgrade"),
+        ) {
+            if c.to_str()
+                .map(|s| s.to_lowercase() == "upgrade")
+                .unwrap_or(false)
+                && w.to_str()
+                    .map(|s| s.to_lowercase() == "websocket")
+                    .unwrap_or(false)
+            {
+                let key = req.headers().get("sec-websocket-key");
+                let derived = key.map(|k| derive_accept_key(k.as_bytes()));
+
+                let addr = self.remote;
+                let relay = self.relay.clone();
+                
+                tokio::spawn(async move {
+                    match hyper::upgrade::on(req).await {
+                        Ok(upgraded) => {
+                            tracing::info!("WebSocket connection established from {}", addr);
+                            if let Err(e) = relay.take_connection(TokioIo::new(upgraded), addr).await
+                            {
+                                tracing::error!("Relay error for {}: {}", addr, e);
+                            }
+                            tracing::info!("WebSocket connection closed for {}", addr);
+                        }
+                        Err(e) => tracing::error!("Upgrade error: {}", e),
+                    }
+                });
+
+                return Box::pin(async move {
+                    Ok(base
+                        .status(101)
+                        .header(CONNECTION, "upgrade")
+                        .header(UPGRADE, "websocket")
+                        .header(SEC_WEBSOCKET_ACCEPT, derived.unwrap())
+                        .body("".to_string())
+                        .unwrap())
+                });
+            }
+        }
+
+        // Serve landing page for HTTP requests
+        let html = landing::get_html(&self.config);
+        Box::pin(async move {
+            Ok(base
+                .status(200)
+                .header("content-type", "text/html; charset=utf-8")
+                .body(html)
+                .unwrap())
+        })
+    }
+}
+
+/// Derive the `Sec-WebSocket-Accept` response header from a `Sec-WebSocket-Key` request header
+fn derive_accept_key(request_key: &[u8]) -> String {
+    const WS_GUID: &[u8] = b"258EAFA5-E914-47DA-95CA-C5AB0DC85B11";
+    let mut engine = Sha1Hash::engine();
+    engine.input(request_key);
+    engine.input(WS_GUID);
+    let hash: Sha1Hash = Sha1Hash::from_engine(engine);
+    base64::prelude::BASE64_STANDARD.encode(hash)
+}
+
 /// Start the HTTP server with integrated Nostr relay
 pub async fn run_server(config: Config, relay: LocalRelay) -> anyhow::Result<()> {
-    let bind_addr = config.bind_address.clone();
+    let bind_addr: SocketAddr = config.bind_address.parse()?;
 
     tracing::info!("Starting HTTP server on {}", bind_addr);
+    tracing::info!("Relay name: {}", config.relay_name);
+    tracing::info!("Domain: {}", config.domain);
 
-    HttpServer::new(move || {
-        App::new()
-            .app_data(web::Data::new(config.clone()))
-            .app_data(web::Data::new(relay.clone()))
-            .wrap(middleware::Logger::default())
-            .route("/", web::get().to(landing::handle))
-    })
-    .bind(&bind_addr)?
-    .run()
-    .await?;
-
-    Ok(())
+    let listener = TcpListener::bind(&bind_addr).await?;
+    
+    loop {
+        let (socket, addr) = listener.accept().await?;
+        let io = TokioIo::new(socket);
+        let service = HttpService::new(relay.clone(), config.clone(), addr);
+        
+        tokio::spawn(async move {
+            if let Err(e) = http1::Builder::new()
+                .serve_connection(io, service)
+                .with_upgrades()
+                .await
+            {
+                tracing::error!("Failed to handle request from {}: {}", addr, e);
+            }
+        });
+    }
 }
-- 
cgit v1.2.3