Moved client responses to mutex.

src/utils.rs

@@ -0,0 +1,17 @@
+use uuid::Uuid;
+
+pub struct GenID;
+
+impl GenID {
+    pub fn new() -> Self {
+        GenID {}
+    }
+}
+
+impl Iterator for GenID {
+    type Item = Uuid;
+
+    fn next(&mut self) -> Option<Self::Item> {
+        Some(Uuid::new_v4())
+    }
+}