compile but not works propertly

src/client/HandShake.rs

@@ -0,0 +1,31 @@
+use std::string;
+
+
+
+pub struct HandShake<'a> {
+    len_pack: u8,
+    len_dom: u8,
+    datagram: &'a[u8],
+    host: &'a[u8],
+    port: &'a[u8],
+}
+
+impl<'a> HandShake<'a>{
+    pub fn new(data: &[u8]) -> HandShake {
+        let len_pack = data[0];
+        println!("{}", len_pack);
+        let len_dom = data[4];
+        println!("{}", len_dom);
+        HandShake {
+            len_pack: len_pack,
+            len_dom: len_dom,
+            datagram: data.clone(),
+            host: (&data[5 .. ((len_dom + 5) as usize)]).clone(),
+            port: (&data[((len_pack - 2) as usize) .. ((len_pack - 1) as usize)]).clone(),
+        }
+    }
+
+    pub fn getHostName(&self) -> String {
+        String::from_utf8(self.datagram[5 .. ((self.len_dom+5) as usize)].to_vec()).unwrap()
+    }
+}