feat: implement download peer

src/message/mod.rs

@@ -9,6 +9,7 @@ pub use message_reader::*;
 use std::str;
 
 #[derive(Debug, PartialEq)]
+#[allow(dead_code)]
 pub enum MessageType {
     Server,
     Peer,
@@ -141,6 +142,7 @@ impl Message {
     pub fn new_with_data(data: Vec<u8>) -> Self {
         Self { data, pointer: 0 }
     }
+    #[allow(dead_code)]
     pub fn reset_pointer(&mut self) {
         self.pointer = 0;
     }
@@ -244,6 +246,7 @@ impl Message {
         self
     }
 
+    #[allow(dead_code)]
     pub fn write_int64(&mut self, value: u64) -> &mut Self {
         self.data.extend_from_slice(&value.to_le_bytes());
         self
@@ -258,6 +261,7 @@ impl Message {
         self
     }
 
+    #[allow(dead_code)]
     pub fn write_raw_hex_string(&mut self, val: &str) -> &mut Self {
         let mut b = Vec::new();
         for i in (0..val.len()).step_by(2) {

src/message/peer/upload_failed.rs

@@ -10,7 +10,7 @@ impl MessageHandler<PeerOperation> for UploadFailedHandler {
     fn get_code(&self) -> u8 {
         46
     }
-    fn handle(&self, message: &mut Message, sender: Sender<PeerOperation>) {
+    fn handle(&self, message: &mut Message, _sender: Sender<PeerOperation>) {
         let upload_failed = UploadFailed::new_from_message(message);
         info!("Upload failed for ${}", upload_failed.filename);
     }

src/message/server/message_factory.rs

@@ -1,4 +1,4 @@
-use crate::{message::Message, types::Transfer, utils::md5};
+use crate::{message::Message, peer::ConnectionType, types::Transfer, utils::md5};
 
 pub struct MessageFactory;
 impl MessageFactory {
@@ -91,7 +91,20 @@ impl MessageFactory {
     }
     pub fn build_pierce_firewall_message(token: u32) -> Message {
         Message::new()
-            .write_int32(0)  // PierceFirewall message code
+            .write_int32(0) // PierceFirewall message code
+            .write_int32(token)
+            .clone()
+    }
+
+    #[allow(dead_code)]
+    pub fn build_peer_init_message(
+        own_username: &str,
+        connection_type: ConnectionType,
+        token: u32,
+    ) -> Message {
+        Message::new()
+            .write_string(own_username)
+            .write_string(&connection_type.to_string())
             .write_int32(token)
             .clone()
     }