Laid out concept for UdpSocket init

src/socket/mod.rs

@@ -1,4 +1,6 @@
-pub trait Socket {}
+pub trait Socket {
+    // TODO expose method to get address of socket
+}
 
 pub type OwnedSockets = (
     Socket0,

src/udp/mod.rs

@@ -1,5 +1,12 @@
 use crate::socket::Socket;
 
 pub struct UdpSocket<SocketImpl: Socket> {
-    pub socket: SocketImpl,
+    socket: SocketImpl,
+}
+
+impl<SocketImpl: Socket> UdpSocket<SocketImpl> {
+	pub fn new(socket: SocketImpl) -> Self {
+		// TODO initialize socket for UDP mode
+		UdpSocket { socket }
+	}
 }

src/w5500.rs

@@ -51,7 +51,7 @@ impl<SpiBus: ActiveBus, NetworkImpl: Network> W5500<SpiBus, NetworkImpl> {
     }
 
     pub fn open_udp_socket<SocketImpl: Socket>(&self, socket: SocketImpl) -> UdpSocket<SocketImpl> {
-        UdpSocket { socket }
+        UdpSocket::new(socket)
     }
 }