1 files changed, 59 insertions, 0 deletions
diff --git a/src/message/handshake/connack.rs b/src/message/handshake/connack.rs
new file mode 100644
index 0000000..222c08c
--- /dev/null
+++ b/src/message/handshake/connack.rs
@@ -0,0 +1,59 @@
+use failure::Error;
+
+/// Data received right after initializing the connection
+///
+/// ConnAck is serialized sequentially
+#[derive(Debug)]
+pub struct ConnAck {
+    /// The Flag 0x01 for TLS
+    /// and 0x02 for Deflate Compression
+    pub flags: u8,
+    /// Some extra protocol version specific data
+    /// So far unused
+    pub extra: i16,
+    /// The version of the protocol
+    /// 0x00000001 for the legacy protocol
+    /// 0x00000002 for the datastream protocol
+    ///
+    /// Only the datastream protocol is supported by this crate
+    pub version: i8,
+}
+
+impl Default for ConnAck {
+    fn default() -> Self {
+        Self {
+            flags: 0x00,
+            extra: 0x00,
+            version: 0x00000002,
+        }
+    }
+}
+
+impl crate::Serialize for ConnAck {
+    fn serialize(&self) -> Result<Vec<std::primitive::u8>, Error> {
+        let mut bytes: Vec<u8> = Vec::new();
+
+        bytes.append(&mut self.flags.serialize()?);
+        bytes.append(&mut self.extra.serialize()?);
+        bytes.append(&mut self.version.serialize()?);
+
+        Ok(bytes)
+    }
+}
+
+impl crate::Deserialize for ConnAck {
+    fn parse(b: &[u8]) -> Result<(usize, Self), Error> {
+        let (flen, flags) = u8::parse(b)?;
+        let (elen, extra) = i16::parse(&b[flen..])?;
+        let (vlen, version) = i8::parse(&b[(flen + elen)..])?;
+
+        return Ok((
+            flen + elen + vlen,
+            Self {
+                flags,
+                extra,
+                version,
+            },
+        ));
+    }
+}