Fix examples (& also bugs with args in lib.rs)

I thought I was clever with Into<Handler> :(

examples/certificates.rs

@@ -19,7 +19,8 @@ async fn main() -> Result<()> {
     let users = Arc::<RwLock::<HashMap<CertBytes, String>>>::default();
 
     Server::bind(("0.0.0.0", GEMINI_PORT))
-        .serve(move|req| handle_request(users.clone(), req))
+        .add_route("/", move|req| handle_request(users.clone(), req))
+        .serve()
         .await
 }
 

examples/document.rs

@@ -12,7 +12,8 @@ async fn main() -> Result<()> {
         .init();
 
     Server::bind(("localhost", GEMINI_PORT))
-        .serve(handle_request)
+        .add_route("/",handle_request)
+        .serve()
         .await
 }
 

examples/serve_dir.rs

@@ -11,7 +11,8 @@ async fn main() -> Result<()> {
         .init();
 
     Server::bind(("localhost", GEMINI_PORT))
-        .serve(handle_request)
+        .add_route("/", handle_request)
+        .serve()
         .await
 }
 

src/lib.rs

@@ -290,12 +290,15 @@ impl<A: ToSocketAddrs> Builder<A> {
     /// "endpoint".  Entering a relative or malformed path will result in a panic.
     ///
     /// For more information about routing mechanics, see the docs for [`RoutingNode`].
-    pub fn add_route(mut self, path: &'static str, handler: impl Into<Handler>) -> Self {
-        self.routes.add_route(path, handler);
+    pub fn add_route<H>(mut self, path: &'static str, handler: H) -> Self
+    where
+        H: Fn(Request) -> HandlerResponse + Send + Sync + 'static,
+    {
+        self.routes.add_route(path, Arc::new(handler));
         self
     }
 
-    pub async fn serve<F>(mut self) -> Result<()> {
+    pub async fn serve(mut self) -> Result<()> {
         let config = tls_config(&self.cert_path, &self.key_path)
             .context("Failed to create TLS config")?;
 

src/routing.rs

@@ -76,7 +76,7 @@ impl RoutingNode {
     /// static strings.  If you would like to add a string dynamically, please use
     /// [`RoutingNode::add_route_by_path()`] in order to appropriately deal with any
     /// errors that might arise.
-    pub fn add_route(&mut self, path: &'static str, handler: impl Into<Handler>) {
+    pub fn add_route(&mut self, path: &'static str, handler: Handler) {
         let path: Path = path.try_into().expect("Malformed path route received");
         self.add_route_by_path(path, handler).unwrap();
     }
@@ -87,7 +87,7 @@ impl RoutingNode {
     /// this method.
     ///
     /// For information about how routes work, see [`RoutingNode::match_path()`]
-    pub fn add_route_by_path(&mut self, mut path: Path, handler: impl Into<Handler>) -> Result<(), ConflictingRouteError>{
+    pub fn add_route_by_path(&mut self, mut path: Path, handler: Handler) -> Result<(), ConflictingRouteError>{
         debug_assert!(path.is_absolute());
         path.normalize(false);
 
@@ -99,7 +99,7 @@ impl RoutingNode {
         if node.0.is_some() {
             Err(ConflictingRouteError())
         } else {
-            node.0 = Some(handler.into());
+            node.0 = Some(handler);
             Ok(())
         }
     }