Derive and implement a few traits for InterfaceAddress and its iterator.

Author: mwanner

src/ifaddrs.rs

@@ -4,6 +4,7 @@
 //! of interfaces and their associated addresses.
 
 use std::ffi;
+use std::fmt;
 use std::iter::Iterator;
 use std::mem;
 use std::option::Option;
@@ -15,6 +16,7 @@ use sys::socket::SockAddr;
 use net::if_::*;
 
 /// Describes a single address for an interface as returned by `getifaddrs`.
+#[derive(Clone, Eq, Hash, PartialEq)]
 pub struct InterfaceAddress {
     /// Name of the network interface
     pub interface_name: String,
@@ -30,6 +32,12 @@ pub struct InterfaceAddress {
     pub destination: Option<SockAddr>,
 }
 
+impl fmt::Debug for InterfaceAddress {
+    fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
+        write!(f, "InterfaceAddress ({:?})", self.interface_name)
+    }
+}
+
 cfg_if! {
     if #[cfg(any(target_os = "emscripten", target_os = "fuchsia", target_os="linux"))] {
         fn get_ifu_from_sockaddr(info: &libc::ifaddrs) -> *const libc::sockaddr {
@@ -73,6 +81,7 @@ impl InterfaceAddress {
 /// Use the function `getifaddrs` to create this Iterator. Note that the
 /// actual list of interfaces can be iterated once and will be freed as
 /// soon as the Iterator goes out of scope.
+#[derive(Debug, Eq, Hash, PartialEq)]
 pub struct InterfaceAddressIterator {
     base: *mut libc::ifaddrs,
     next: *mut libc::ifaddrs,