Fixing Serialize impl for Ipv4Net and Ipv6Net per issue #10

src/ipnet.rs

@@ -72,6 +72,7 @@ pub enum IpNet {
 /// let net: Ipv4Net = "10.1.1.0/24".parse().unwrap();
 /// assert_eq!(Ok(net.network()), "10.1.1.0".parse());
 /// ```
+//#[cfg_attr(feature = "serde", derive(Serialize, Deserialize))]
 #[derive(Copy, Clone, Eq, PartialEq, Ord, PartialOrd, Hash)]
 pub struct Ipv4Net {
     addr: Ipv4Addr,
@@ -102,6 +103,7 @@ pub struct Ipv4Net {
 /// let net: Ipv6Net = "fd00::/32".parse().unwrap();
 /// assert_eq!(Ok(net.network()), "fd00::".parse());
 /// ```
+//#[cfg_attr(feature = "serde", derive(Serialize, Deserialize))]
 #[derive(Copy, Clone, Eq, PartialEq, Ord, PartialOrd, Hash)]
 pub struct Ipv6Net {
     addr: Ipv6Addr,

src/with_serde.rs

@@ -13,9 +13,16 @@ impl<'de> Deserialize<'de> for Ipv4Net {
 
 impl Serialize for Ipv4Net {
     fn serialize<S>(&self, serializer: S) -> Result<S::Ok, S::Error>
-        where S: Serializer
+        where S: Serializer,
     {
-        serializer.serialize_str(&self.to_string())
+        if serializer.is_human_readable() {
+            serializer.serialize_str(&self.to_string())
+        } else {
+            let mut v: Vec<u8> = vec![];
+            v.extend_from_slice(&self.octets());
+            v.push(self.prefix_len());
+            v.serialize(serializer)
+        }
     }
 }
 
@@ -33,7 +40,14 @@ impl Serialize for Ipv6Net {
     fn serialize<S>(&self, serializer: S) -> Result<S::Ok, S::Error>
         where S: Serializer
     {
-        serializer.serialize_str(&self.to_string())
+        if serializer.is_human_readable() {
+            serializer.serialize_str(&self.to_string())
+        } else {
+            let mut v: Vec<u8> = vec![];
+            v.extend_from_slice(&self.octets());
+            v.push(self.prefix_len());
+            v.serialize(serializer)
+        }
     }
 }
 
@@ -71,4 +85,4 @@ mod tests {
         let net: IpNet = net_str.parse().unwrap();
         assert_tokens(&net.readable(), &[Token::Str(net_str)]);
     }
-}
+}