messages rewrite

client-network/src/messages_structure.rs

@@ -1,3 +1,45 @@
+use crate::server_communication::generate_id;
+
+const ID: usize = 4;
+const TYPE: usize = 5;
+const LENGTH: usize = 7;
+const EXTENSIONS: usize = 32;
+const SIGNATURE: usize = 64;
+
+const PING: u8 = 0;
+const OK: u8 = 128;
+const ERROR: u8 = 129;
+const HELLO: u8 = 1;
+const HELLOREPLY: u8 = 130;
+const ROOTREQUEST: u8 = 2;
+const ROOTREPLY: u8 = 131;
+const DATUMREQUEST: u8 = 3;
+const NODATUM: u8 = 133;
+const DATUM: u8 = 132;
+const NATTRAVERSALREQUEST: u8 = 4;
+const NATTRAVERSALREQUEST2: u8 = 5;
+
+pub fn constructMessage(msgtype: u8, payload: Vec<u8>, id: &[u8]) {
+    match msgtype {
+        HELLO => {
+            let message: Vec<u8> = vec![0u8; LENGTH + EXTENSIONS + payload.len() + SIGNATURE];
+
+            message.extend_from_slice(id);
+            message.extend_from_slice(0);
+
+            let name_vec = username.trim_end_matches(char::from(0)).as_bytes().to_vec();
+            HandshakeMessage {
+                id: id,
+                msg_type: 1,
+                length: length,
+                extensions: 0,
+                name: name_vec,
+                signature: vec![0; 64],
+            }
+        }
+    }
+}
+
 pub struct UDPMessage {
     id: u32,
     msg_type: u8,
@@ -15,6 +57,22 @@ pub struct HandshakeMessage {
     pub signature: Vec<u8>,
 }
 
+pub struct DatumRootRequest {
+    pub id: u32,
+    msg_type: u8,
+    length: u16,
+    hash: Vec<u8>,
+}
+
+pub struct DatumReply {
+    pub id: u32,
+    msg_type: u8,
+    length: u16,
+    hash: Vec<u8>,
+    value: Vec<u8>,
+    signature: Vec<u8>,
+}
+
 impl UDPMessage {
     pub fn ping(id: u32) -> UDPMessage {
         UDPMessage {