Fixes to ssl/tls, misc improvements

* Use the PHP context options to configure tls rather than reinventing
  the wheel.
* Properly setup the SocketServer for ssl
* Added generic getter for config values

src/Configuration.php

@@ -41,6 +41,24 @@ class Configuration
         return $config;
     }
 
+    /**
+     * Retrieve a key from the configuration. If the key ends with a dot, all values
+     * with keys starting with the requested key are returned. If the key is a single 
+     * dot, all keys are matched and all values returned.
+     * 
+     * @param string $key
+     * @param mixed $default Default value
+     * @return mixed
+     */
+    public function get(string $key, $default = null): mixed
+    {
+        if ($key === '.')
+            return $this->config;
+        if (str_ends_with($key, "."))
+            return array_filter($this->config, fn($k)=>str_starts_with($k,$key), ARRAY_FILTER_USE_KEY);
+        return $this->config[$key] ?? $default;
+    }
+
     public function setPublicUrl(string $publicUrl): self
     {
         $this->config['server.public_url'] = $publicUrl;

src/Daemon.php

@@ -9,6 +9,7 @@ use NoccyLabs\Mercureact\Http\Server;
 use Psr\Log\LoggerInterface;
 use React\EventLoop\Loop;
 use React\EventLoop\LoopInterface;
+use React\Socket\SecureServer;
 use React\Socket\SocketServer;
 
 class Daemon
@@ -48,7 +49,21 @@ class Daemon
             $this->logger->warning("Empty listening address. You won't make it far.");
             return;
         }
-        $socket = new SocketServer("tcp://".$listenAddress);
+
+        $certificate = $this->config->get("server.encryption.local_cert");
+
+        if ($certificate) {
+            $this->logger->info("Using local cert: {$certificate}");
+            $context = [
+                'tls' => $this->config->get("server.encryption.")
+            ];
+            $uri = 'tls://' . $listenAddress;
+        } else {
+            $uri = 'tcp://' . $listenAddress;
+        }
+
+        $socket = new SocketServer($uri, $context??[]);
+
         $this->server->listen($socket);
     }
 

src/Http/Server.php

@@ -80,7 +80,7 @@ class Server
         $this->server->listen($socket);
         $this->logger->info(sprintf(
             "Listening on %s",
-            str_replace("tcp://",($socket instanceof SecureServer?"https://":"http://"),$socket->getAddress())
+            strtr($socket->getAddress(), [ "tcp://"=>"http://", "tls://"=>"https://"])
         ));
     }