add sslSession method (#165)

avaje-jex/src/main/java/io/avaje/jex/Context.java

@@ -13,6 +13,9 @@
 import java.util.Map;
 import java.util.Set;
 import java.util.stream.Stream;
+
+import javax.net.ssl.SSLSession;
+
 import com.sun.net.httpserver.Headers;
 import com.sun.net.httpserver.HttpExchange;
 
@@ -444,6 +447,13 @@ default Context headers(Map<String, String> headers) {
   /** Return true if the response has been sent. */
   boolean responseSent();
 
+  /**
+   * Get the {@link SSLSession} for this exchange.
+   *
+   * @return the {@code SSLSession}
+   */
+  SSLSession sslSession();
+
   /**
    * This interface represents a cookie used in HTTP communication. Cookies are small pieces of data
    * sent from a server to a web browser and stored on the user's computer. They can be used to

avaje-jex/src/main/java/io/avaje/jex/core/JdkContext.java

@@ -26,8 +26,11 @@
 import java.util.Set;
 import java.util.stream.Stream;
 
+import javax.net.ssl.SSLSession;
+
 import com.sun.net.httpserver.Headers;
 import com.sun.net.httpserver.HttpExchange;
+import com.sun.net.httpserver.HttpsExchange;
 
 import io.avaje.jex.Context;
 import io.avaje.jex.compression.CompressedOutputStream;
@@ -519,4 +522,10 @@ private static BasicAuthCredentials getBasicAuthCredentials(String authorization
 
     return new BasicAuthCredentials(credentials[0], credentials[1]);
   }
+
+  @Override
+  public SSLSession sslSession() {
+
+    return exchange instanceof HttpsExchange ex ? ex.getSSLSession() : null;
+  }
 }