Create Client struct

src/lib.rs

@@ -1,8 +1,14 @@
-#[cfg(test)]
-mod tests {
-    #[test]
-    fn it_works() {
-        let result = 2 + 2;
-        assert_eq!(result, 4);
-    }
+use std::net::TcpStream;
+use std::io::Error;
+
+pub struct Client {
+    stream: TcpStream
 }
+
+impl Client {
+    pub fn new(host: &str, port: &str) -> Result<Self, Error> {
+        let mut stream = TcpStream::connect(format!("{}:{}", host, port))?;
+
+        Ok(Self { stream })
+    }
+}