add bits to deal with Upgrade requests

src/mock.rs

@@ -0,0 +1,29 @@
+use std::io::IoResult;
+use std::io::net::ip::SocketAddr;
+
+use net::NetworkStream;
+
+#[deriving(Clone, PartialEq, Show)]
+pub struct MockStream;
+
+impl Reader for MockStream {
+    fn read(&mut self, _buf: &mut [u8]) -> IoResult<uint> {
+        unimplemented!()
+    }
+}
+
+impl Writer for MockStream {
+    fn write(&mut self, _msg: &[u8]) -> IoResult<()> {
+        unimplemented!()
+    }
+}
+
+impl NetworkStream for MockStream {
+    fn connect(_host: &str, _port: u16, _scheme: &str) -> IoResult<MockStream> {
+        Ok(MockStream)
+    }
+
+    fn peer_name(&mut self) -> IoResult<SocketAddr> {
+        Ok(from_str("127.0.0.1:1337").unwrap())
+    }
+}