Ping server regularly

src/id.rs

@@ -12,3 +12,7 @@ fn random_id(prefix: &str, length: usize) -> String {
 pub fn random_runner_token() -> String {
     random_id("t", 30)
 }
+
+pub fn random_runner_secret() -> String {
+    random_id("s", 30)
+}