fix: HttpRequestLoggerServer should not keep the connection open

Signed-off-by: Masatake Iwasaki <[email protected]>

util/http-request-logger/src/main/java/org/eclipse/edc/samples/util/HttpRequestLoggerServer.java

@@ -49,7 +49,7 @@ public void handle(HttpExchange exchange) throws IOException {
             System.out.println("Body:");
             System.out.println(new String(exchange.getRequestBody().readAllBytes()));
             System.out.println("=============");
-            exchange.sendResponseHeaders(200, 0);
+            exchange.sendResponseHeaders(200, -1);
         }
     }