diff --git a/src/runtime2/stdlib/internet.rs b/src/runtime2/stdlib/internet.rs
index 0013332ee7c5c7b50eae94a319637d642214ad80..3071b975015dea74e0ec67b71b91528cab76089b 100644
--- a/src/runtime2/stdlib/internet.rs
+++ b/src/runtime2/stdlib/internet.rs
@@ -6,6 +6,7 @@ use libc::{
     sockaddr_in, sockaddr_in6, in_addr, in6_addr,
     socket, bind, listen, accept, connect, close,
 };
+use mio::{event, Interest, Registry, Token};
 
 #[derive(Debug)]
 pub enum SocketError {
@@ -193,7 +194,31 @@ impl Drop for SocketRawRx {
     }
 }
 
+// The following is essentially stolen from `mio`'s io_source.rs file.
+#[cfg(unix)]
+trait AsRawFileDescriptor {
+    fn as_raw_file_descriptor(&self) -> c_int;
+}
+
+impl AsRawFileDescriptor for SocketTcpClient {
+    fn as_raw_file_descriptor(&self) -> c_int {
+        return self.socket_handle;
+    }
+}
+
+impl<T: AsRawFileDescriptor> event::Source for T {
+    fn register(&mut self, registry: &Registry, token: Token, interests: Interest) -> std::io::Result<()> {
+        registry.selector().register()
+    }
+
+    fn reregister(&mut self, registry: &Registry, token: Token, interests: Interest) -> std::io::Result<()> {
+        todo!()
+    }
 
+    fn deregister(&mut self, registry: &Registry) -> std::io::Result<()> {
+        todo!()
+    }
+}
 
 /// Performs the `socket` and `bind` calls.
 fn create_and_bind_socket(socket_type: libc::c_int, protocol: libc::c_int, ip: IpAddr, port: u16) -> Result<libc::c_int, SocketError> {