working

Reviewed-on: #3

client-gui/src/gui_app.rs

@@ -4,8 +4,9 @@ use client_network::{
 };
 use crossbeam_channel::{Receiver, Sender};
 use egui::{
-    Align, Align2, Button, CentralPanel, CollapsingHeader, Context, Id, LayerId, Layout, Order,
+    Align, Align2, Button, CentralPanel, CollapsingHeader, Color32, Context, CornerRadius, Frame,
-    Popup, ScrollArea, SidePanel, TextStyle, TopBottomPanel, Ui, ViewportCommand,
+    Id, LayerId, Layout, Order, Popup, Response, ScrollArea, SidePanel, Stroke, TextStyle,
+    TopBottomPanel, Ui, ViewportCommand,
 };
 use std::{collections::HashMap, fmt::format};
 
@@ -43,6 +44,7 @@ pub struct P2PClientApp {
     show_network_popup: bool, // gérer selon besoin
 
     error_message: Option<String>, // Some(message) -> afficher, None -> rien
+    success_message: Option<String>, // Some(message) -> afficher, None -> rien
     //
     active_server: String,
 }
@@ -62,7 +64,7 @@ impl P2PClientApp {
             network_cmd_tx: cmd_tx,
             network_event_rx: event_rx,
             status_message: "Client Initialized. Awaiting network status...".to_string(),
-            known_peers: vec![("bob".to_string(), true)],
+            known_peers: Vec::new(),
             connect_address_input: "https://jch.irif.fr:8443".to_string(),
             connected_address: "".to_string(),
             loaded_fs,
@@ -70,6 +72,7 @@ impl P2PClientApp {
             server_status: ServerStatus::NotConnected,
             show_network_popup: false,
             error_message: None,
+            success_message: None,
             connect_name_input: "bob".to_string(),
             active_server: "".to_string(),
         }
@@ -77,9 +80,15 @@ impl P2PClientApp {
     pub fn show_error(&mut self, msg: impl Into<String>) {
         self.error_message = Some(msg.into());
     }
+    pub fn show_success(&mut self, msg: impl Into<String>) {
+        self.success_message = Some(msg.into());
+    }
     pub fn clear_error(&mut self) {
         self.error_message = None;
     }
+    pub fn clear_success(&mut self) {
+        self.success_message = None;
+    }
 }
 
 // --- eframe::App Trait Implementation ---
@@ -120,10 +129,7 @@ impl eframe::App for P2PClientApp {
 
                     self.known_peers = peers;
                 }
-                NetworkEvent::FileTreeReceived(_peer_id, _) => {
+                NetworkEvent::FileTreeReceived(node_hash, merklenode) => {
-                    todo!();
-
-                    //self.loaded_tree_nodes.insert(_peer_id, tree);
                     //self.status_message = "🔄 File tree updated successfully.".to_string();
                 }
                 NetworkEvent::FileTreeRootReceived(peer_id, root_hash) => {
@@ -178,6 +184,9 @@ impl eframe::App for P2PClientApp {
                 NetworkEvent::Error(err) => {
                     self.show_error(err);
                 }
+                NetworkEvent::Success(msg) => {
+                    self.show_success(msg);
+                }
                 NetworkEvent::DataReceived(_, merkle_node) => todo!(),
                 NetworkEvent::HandshakeFailed() => {}
                 NetworkEvent::ServerHandshakeFailed(err) => {
@@ -363,13 +372,24 @@ impl eframe::App for P2PClientApp {
                             let is_active =
                                 self.active_peer.as_ref().map_or(false, |id| id == &peer.0); // if peer.id == self.active_peer_id
 
-                            let selectable;
+                            let selectable: Response;
                             if &self.active_server == &peer.0 {
-                                selectable =
+                                // Create a frame with green background and render the selectable inside it.
-                                    ui.selectable_label(is_active, format!("{} 📡 🌀", peer.0))
+                                // Adjust rounding, padding and stroke as desired.
+                                let frame = Frame {
+                                    fill: Color32::DARK_BLUE,
+                                    stroke: Stroke::default(),
+                                    corner_radius: CornerRadius::from(0.5),
+                                    ..Default::default()
+                                };
+                                let internal = frame.show(ui, |ui| {
+                                    ui.selectable_label(is_active, format!("{}", peer.0))
+                                });
+                                selectable = internal.response;
                             } else {
                                 selectable = ui.selectable_label(is_active, format!("{}", peer.0));
                             }
+
                             if selectable.clicked() {
                                 // switch to displaying this peer's tree
                                 self.active_peer = Some(peer.0.clone());
@@ -406,9 +426,10 @@ impl eframe::App for P2PClientApp {
                                     _ => {}
                                 }
                                 if ui.button("Send Ping").clicked() {
-                                    let res = self
+                                    let res = self.network_cmd_tx.send(NetworkCommand::Ping(
-                                        .network_cmd_tx
+                                        peer.0.to_string(),
-                                        .send(NetworkCommand::Ping(peer.0.to_string()));
+                                        self.connected_address.clone(),
+                                    ));
                                 }
                                 if ui.button("Send Nat Traversal Request").clicked() {
                                     match self.network_cmd_tx.send(NetworkCommand::NatTraversal(
@@ -478,6 +499,20 @@ impl eframe::App for P2PClientApp {
                 });
             ctx.request_repaint();
         }
+        if let Some(msg) = &self.success_message {
+            let msg = msg.clone();
+            egui::Window::new("Success")
+                .collapsible(false)
+                .resizable(false)
+                .anchor(egui::Align2::CENTER_CENTER, [0.0, 0.0])
+                .show(ctx, |ui| {
+                    ui.label(&msg);
+                    if ui.button("OK").clicked() {
+                        self.clear_success();
+                    }
+                });
+            ctx.request_repaint();
+        }
 
         ctx.request_repaint_after(std::time::Duration::from_millis(10));
     }
@@ -573,7 +608,7 @@ impl P2PClientApp {
                         .enabled(true)
                         .show(ui, |ui| {
                             for child in &node.children_hashes {
-                                self.draw_file_node(ui, child.content_hash, tree, depth + 1, None);
+                                self.draw_file_node(ui, child.clone(), tree, depth + 1, None);
                             }
                         });
                 }

client-network/src/cryptographic_signature.rs

@@ -7,7 +7,6 @@ use p256::ecdsa::{
     signature::{Signer, Verifier},
 };
 use rand_core::OsRng;
-use reqwest::Error;
 use sha2::{Digest, Sha256};
 
 ///
@@ -51,24 +50,19 @@ pub async fn get_peer_key(username: &String) -> Result<VerifyingKey, reqwest::Er
     let client = reqwest::Client::new();
     let uri = format!("https://jch.irif.fr:8443/peers/{}/key", username);
     let res = client.get(uri).send().await?;
-
+    if res.status().is_success() {
-    match res.error_for_status_ref() {
+        println!("Successfully retreived the peers key.");
-        Ok(_) => {
+    } else {
-            println!("Successfully retreived the peers key.");
+        eprintln!(
-            let body: Bytes = res.bytes().await?;
+            "Failed to get the peers key from the server. Status: {}",
-            let slice: &[u8] = body.as_ref();
+            res.status()
-            let body_bytes: &[u8; 64] = slice.try_into().expect("size error");
+        );
-            let received_key = convert_verifyingkey(body_bytes);
-            Ok(received_key)
-        }
-        Err(e) => {
-            eprintln!(
-                "Failed to get the peers key from the server. Status: {}",
-                res.status()
-            );
-            Err(e)
-        }
     }
+    let body: Bytes = res.bytes().await?;
+    let slice: &[u8] = body.as_ref();
+    let body_bytes: &[u8; 64] = slice.try_into().expect("size error");
+    let received_key = convert_verifyingkey(body_bytes);
+    Ok(received_key)
 }
 
 fn convert_verifyingkey(raw_xy: &[u8; 64]) -> VerifyingKey {

client-network/src/data.rs

@@ -3,51 +3,12 @@ use std::collections::HashMap;
 use std::hash::{DefaultHasher, Hash, Hasher};
 
 // --- Constants ---
-const MAX_CHUNK_DATA_SIZE: usize = 1024;
+pub const MAX_CHUNK_DATA_SIZE: usize = 1024;
-const MAX_DIRECTORY_ENTRIES: usize = 16;
+pub const MAX_DIRECTORY_ENTRIES: usize = 16;
-const MAX_BIG_CHILDREN: usize = 32;
+pub const MAX_BIG_CHILDREN: usize = 32;
-const MIN_BIG_CHILDREN: usize = 2;
+pub const MIN_BIG_CHILDREN: usize = 2;
-const FILENAME_HASH_SIZE: usize = 32;
+pub const FILENAME_HASH_SIZE: usize = 32;
-const DIRECTORY_ENTRY_SIZE: usize = FILENAME_HASH_SIZE * 2; // 64 bytes
+pub const DIRECTORY_ENTRY_SIZE: usize = FILENAME_HASH_SIZE * 2; // 64 bytes
-
-fn hash(data: &[u8]) -> NodeHash {
-    let mut hasher = DefaultHasher::new();
-    data.hash(&mut hasher);
-    let hash_u64 = hasher.finish();
-
-    let mut hash_array = [0u8; FILENAME_HASH_SIZE];
-    // Simple way to spread a 64-bit hash across 32 bytes for a unique-ish ID
-    for i in 0..8 {
-        hash_array[i] = (hash_u64 >> (i * 8)) as u8;
-    }
-    hash_array // The rest remains 0, satisfying the 32-byte requirement
-}
-
-fn generate_random_filename() -> [u8; FILENAME_HASH_SIZE] {
-    let mut rng = rand::rng();
-    let mut filename_bytes = [0; FILENAME_HASH_SIZE];
-
-    // Generate a random length for the base name
-    let name_len = rng.random_range(5..21);
-
-    // Generate random alphanumeric characters
-    for i in 0..name_len {
-        let char_code = rng.random_range(97..123); // 'a' through 'z'
-        if i < FILENAME_HASH_SIZE {
-            filename_bytes[i] = char_code as u8;
-        }
-    }
-
-    // Append a common extension
-    let ext = if rng.random_bool(0.5) { ".txt" } else { ".dat" };
-    let ext_bytes = ext.as_bytes();
-    let start_index = name_len.min(FILENAME_HASH_SIZE - ext_bytes.len());
-    if start_index < FILENAME_HASH_SIZE {
-        filename_bytes[start_index..(start_index + ext_bytes.len())].copy_from_slice(ext_bytes);
-    }
-
-    filename_bytes
-}
 
 pub type NodeHash = [u8; FILENAME_HASH_SIZE];
 
@@ -80,100 +41,6 @@ impl MerkleTree {
     }
 }
 
-/*fn generate_random_file_node(
-    storage: &mut HashMap<NodeHash, MerkleNode>,
-) -> Result<NodeHash, String> {
-    let mut rng = rng();
-    let is_big = rng.random_bool(0.2); // 20% chance of being a big file
-
-    if !is_big {
-        // Generate a simple Chunk Node
-        let node = MerkleNode::Chunk(ChunkNode::new_random());
-        let hash = hash(&node.serialize());
-        storage.insert(hash, node);
-        Ok(hash)
-    } else {
-        // Generate a Big Node (a file composed of chunks)
-        let num_children = rng.random_range(MIN_BIG_CHILDREN..=MAX_BIG_CHILDREN.min(8)); // Limit complexity
-        let mut children_hashes = Vec::with_capacity(num_children);
-
-        for _ in 0..num_children {
-            // Children must be Chunk or Big; for simplicity, we only generate Chunk children here.
-            let chunk_node = MerkleNode::Chunk(ChunkNode::new_random());
-            let chunk_hash = hash(&chunk_node.serialize());
-            storage.insert(chunk_hash, chunk_node);
-            children_hashes.push(chunk_hash);
-        }
-
-        let node = MerkleNode::Big(BigNode::new(children_hashes)?);
-        let hash = hash(&node.serialize());
-        storage.insert(hash, node);
-        Ok(hash)
-    }
-}*/
-
-/*fn generate_random_directory_node(
-    depth: u32,
-    max_depth: u32,
-    storage: &mut HashMap<NodeHash, MerkleNode>,
-) -> Result<NodeHash, String> {
-    let mut rng = rng();
-    let current_depth = depth + 1;
-    let is_big_dir = rng.random_bool(0.3) && current_depth < max_depth;
-
-    if !is_big_dir || current_depth >= max_depth {
-        // Generate a simple Directory Node (leaf level directory)
-        let num_entries = rng.random_range(1..=MAX_DIRECTORY_ENTRIES.min(5)); // Limit directory size for testing
-        let mut entries = Vec::with_capacity(num_entries);
-
-        for _ in 0..num_entries {
-            if rng.random_bool(0.7) {
-                // 70% chance of creating a file (Chunk/Big)
-                let file_hash = generate_random_file_node(storage)?;
-                let entry = DirectoryEntry {
-                    filename: generate_random_filename(),
-                    content_hash: file_hash,
-                };
-                entries.push(entry);
-            } else if current_depth < max_depth {
-                // 30% chance of creating a subdirectory
-                let dir_hash = generate_random_directory_node(current_depth, max_depth, storage)?;
-
-                // Create a basic directory entry name
-                let mut filename_bytes = [0; 32];
-                let subdir_name = format!("dir_{}", current_depth);
-                filename_bytes[..subdir_name.len()].copy_from_slice(subdir_name.as_bytes());
-
-                let entry = DirectoryEntry {
-                    filename: filename_bytes,
-                    content_hash: dir_hash,
-                };
-                entries.push(entry);
-            }
-        }
-
-        let node = MerkleNode::Directory(DirectoryNode::new(entries)?);
-        let hash = hash(&node.serialize());
-        storage.insert(hash, node);
-        Ok(hash)
-    } else {
-        // Generate a BigDirectory Node (internal directory structure)
-        let num_children = rng.random_range(MIN_BIG_CHILDREN..=MAX_BIG_CHILDREN.min(4)); // Limit children count
-        let mut children = Vec::with_capacity(num_children);
-
-        for _ in 0..num_children {
-            // Children must be Directory or BigDirectory
-            let child_hash = generate_random_directory_node(current_depth, max_depth, storage)?;
-            children.push(child_hash);
-        }
-
-        let node = MerkleNode::BigDirectory(BigDirectoryNode::new(children)?);
-        let hash = hash(&node.serialize());
-        storage.insert(hash, node);
-        Ok(hash)
-    }
-}*/
-
 #[derive(Debug, Clone)]
 pub struct ChunkNode {
     pub data: Vec<u8>,
@@ -208,7 +75,7 @@ impl ChunkNode {
 // Helper struct
 #[derive(Debug, Clone)]
 pub struct DirectoryEntry {
-    pub filename: Vec<u8>,
+    pub filename: [u8; FILENAME_HASH_SIZE],
     pub content_hash: NodeHash,
 }
 
@@ -240,7 +107,7 @@ pub struct BigNode {
 }
 
 impl BigNode {
-    /*pub fn new(children_hashes: Vec<NodeHash>) -> Result<Self, String> {
+    pub fn new(children_hashes: Vec<NodeHash>) -> Result<Self, String> {
         let n = children_hashes.len();
         if n < MIN_BIG_CHILDREN || n > MAX_BIG_CHILDREN {
             return Err(format!(
@@ -249,17 +116,17 @@ impl BigNode {
             ));
         }
         Ok(BigNode { children_hashes })
-    }*/
+    }
 }
 
 #[derive(Debug, Clone)]
 pub struct BigDirectoryNode {
-    //pub children_hashes: Vec<NodeHash>,
+    pub children_hashes: Vec<NodeHash>,
-    pub children_hashes: Vec<DirectoryEntry>,
+    // pub children_hashes: Vec<DirectoryEntry>,
 }
 
 impl BigDirectoryNode {
-    /*pub fn new(children_hashes: Vec<NodeHash>) -> Result<Self, String> {
+    pub fn new(children_hashes: Vec<NodeHash>) -> Result<Self, String> {
         let n = children_hashes.len();
         if n < MIN_BIG_CHILDREN || n > MAX_BIG_CHILDREN {
             return Err(format!(
@@ -268,14 +135,6 @@ impl BigDirectoryNode {
             ));
         }
         Ok(BigDirectoryNode { children_hashes })
-    }*/
-    pub fn new(entries: Vec<DirectoryEntry>) -> Result<Self, String> {
-        if entries.len() > MAX_DIRECTORY_ENTRIES {
-            return Err(format!("Directory exceeds {} bytes", entries.len()));
-        }
-        Ok(BigDirectoryNode {
-            children_hashes: entries,
-        })
     }
 }
 
@@ -310,73 +169,10 @@ impl MerkleNode {
             }
             MerkleNode::BigDirectory(node) => {
                 for hash in &node.children_hashes {
-                    bytes.extend_from_slice(&hash.content_hash);
+                    bytes.extend_from_slice(hash);
                 }
             }
         }
         bytes
     }
-
-    /*pub fn generate_random_tree(
-        max_depth: u32,
-    ) -> Result<(NodeHash, HashMap<NodeHash, MerkleNode>), String> {
-        let mut storage = HashMap::new();
-
-        // Start tree generation from the root directory at depth 0
-        let root_hash = generate_random_directory_node(0, max_depth, &mut storage)?;
-
-        Ok((root_hash, storage))
-    }*/
-
-    /*pub fn generate_base_tree() -> (NodeHash, HashMap<NodeHash, MerkleNode>) {
-        let mut res = HashMap::new();
-
-        let node1 = MerkleNode::Chunk(ChunkNode::new_random());
-        let hash1 = hash(&node1.serialize());
-
-        let node2 = MerkleNode::Chunk(ChunkNode::new_random());
-        let hash2 = hash(&node2.serialize());
-
-        res.insert(hash1, node1);
-        res.insert(hash2, node2);
-
-        let node3 = MerkleNode::Chunk(ChunkNode::new_random());
-        let hash3 = hash(&node3.serialize());
-
-        res.insert(hash3, node3);
-
-        let dir1 = MerkleNode::Directory(DirectoryNode {
-            entries: [DirectoryEntry {
-                filename: generate_random_filename(),
-                content_hash: hash3,
-            }]
-            .to_vec(),
-        });
-        let hash_dir1 = hash(&dir1.serialize());
-
-        res.insert(hash_dir1, dir1);
-
-        let root = MerkleNode::Directory(DirectoryNode {
-            entries: [
-                DirectoryEntry {
-                    filename: generate_random_filename(),
-                    content_hash: hash1,
-                },
-                DirectoryEntry {
-                    filename: generate_random_filename(),
-                    content_hash: hash2,
-                },
-                DirectoryEntry {
-                    filename: generate_random_filename(),
-                    content_hash: hash_dir1,
-                },
-            ]
-            .to_vec(),
-        });
-
-        let root_hash = hash(&root.serialize());
-        res.insert(root_hash, root);
-
-        (root_hash, res)
-    }*/
 }

client-network/src/datum_generation.rs

@@ -0,0 +1,200 @@
+use crate::data::*;
+use rand::{Rng, rng};
+use std::collections::HashMap;
+use std::hash::{DefaultHasher, Hash, Hasher};
+
+fn hash(data: &[u8]) -> NodeHash {
+    let mut hasher = DefaultHasher::new();
+    data.hash(&mut hasher);
+    let hash_u64 = hasher.finish();
+
+    let mut hash_array = [0u8; FILENAME_HASH_SIZE];
+    // Simple way to spread a 64-bit hash across 32 bytes for a unique-ish ID
+    for i in 0..8 {
+        hash_array[i] = (hash_u64 >> (i * 8)) as u8;
+    }
+    hash_array // The rest remains 0, satisfying the 32-byte requirement
+}
+
+fn generate_random_filename() -> [u8; FILENAME_HASH_SIZE] {
+    let mut rng = rand::rng();
+    let mut filename_bytes = [0; FILENAME_HASH_SIZE];
+
+    // Generate a random length for the base name
+    let name_len = rng.random_range(5..21);
+
+    // Generate random alphanumeric characters
+    for i in 0..name_len {
+        let char_code = rng.random_range(97..123); // 'a' through 'z'
+        if i < FILENAME_HASH_SIZE {
+            filename_bytes[i] = char_code as u8;
+        }
+    }
+
+    // Append a common extension
+    let ext = if rng.random_bool(0.5) { ".txt" } else { ".dat" };
+    let ext_bytes = ext.as_bytes();
+    let start_index = name_len.min(FILENAME_HASH_SIZE - ext_bytes.len());
+    if start_index < FILENAME_HASH_SIZE {
+        filename_bytes[start_index..(start_index + ext_bytes.len())].copy_from_slice(ext_bytes);
+    }
+
+    filename_bytes
+}
+
+fn generate_random_file_node(
+    storage: &mut HashMap<NodeHash, MerkleNode>,
+) -> Result<NodeHash, String> {
+    let mut rng = rng();
+    let is_big = rng.random_bool(0.2); // 20% chance of being a big file
+
+    if !is_big {
+        // Generate a simple Chunk Node
+        let node = MerkleNode::Chunk(ChunkNode::new_random());
+        let hash = hash(&node.serialize());
+        storage.insert(hash, node);
+        Ok(hash)
+    } else {
+        // Generate a Big Node (a file composed of chunks)
+        let num_children = rng.random_range(MIN_BIG_CHILDREN..=MAX_BIG_CHILDREN.min(8)); // Limit complexity
+        let mut children_hashes = Vec::with_capacity(num_children);
+
+        for _ in 0..num_children {
+            // Children must be Chunk or Big; for simplicity, we only generate Chunk children here.
+            let chunk_node = MerkleNode::Chunk(ChunkNode::new_random());
+            let chunk_hash = hash(&chunk_node.serialize());
+            storage.insert(chunk_hash, chunk_node);
+            children_hashes.push(chunk_hash);
+        }
+
+        let node = MerkleNode::Big(BigNode::new(children_hashes)?);
+        let hash = hash(&node.serialize());
+        storage.insert(hash, node);
+        Ok(hash)
+    }
+}
+
+fn generate_random_directory_node(
+    depth: u32,
+    max_depth: u32,
+    storage: &mut HashMap<NodeHash, MerkleNode>,
+) -> Result<NodeHash, String> {
+    let mut rng = rng();
+    let current_depth = depth + 1;
+    let is_big_dir = rng.random_bool(0.3) && current_depth < max_depth;
+
+    if !is_big_dir || current_depth >= max_depth {
+        // Generate a simple Directory Node (leaf level directory)
+        let num_entries = rng.random_range(1..=MAX_DIRECTORY_ENTRIES.min(5)); // Limit directory size for testing
+        let mut entries = Vec::with_capacity(num_entries);
+
+        for _ in 0..num_entries {
+            if rng.random_bool(0.7) {
+                // 70% chance of creating a file (Chunk/Big)
+                let file_hash = generate_random_file_node(storage)?;
+                let entry = DirectoryEntry {
+                    filename: generate_random_filename(),
+                    content_hash: file_hash,
+                };
+                entries.push(entry);
+            } else if current_depth < max_depth {
+                // 30% chance of creating a subdirectory
+                let dir_hash = generate_random_directory_node(current_depth, max_depth, storage)?;
+
+                // Create a basic directory entry name
+                let mut filename_bytes = [0; 32];
+                let subdir_name = format!("dir_{}", current_depth);
+                filename_bytes[..subdir_name.len()].copy_from_slice(subdir_name.as_bytes());
+
+                let entry = DirectoryEntry {
+                    filename: filename_bytes,
+                    content_hash: dir_hash,
+                };
+                entries.push(entry);
+            }
+        }
+
+        let node = MerkleNode::Directory(DirectoryNode::new(entries)?);
+        let hash = hash(&node.serialize());
+        storage.insert(hash, node);
+        Ok(hash)
+    } else {
+        // Generate a BigDirectory Node (internal directory structure)
+        let num_children = rng.random_range(MIN_BIG_CHILDREN..=MAX_BIG_CHILDREN.min(4)); // Limit children count
+        let mut children = Vec::with_capacity(num_children);
+
+        for _ in 0..num_children {
+            // Children must be Directory or BigDirectory
+            let child_hash = generate_random_directory_node(current_depth, max_depth, storage)?;
+            children.push(child_hash);
+        }
+
+        let node = MerkleNode::BigDirectory(BigDirectoryNode::new(children)?);
+        let hash = hash(&node.serialize());
+        storage.insert(hash, node);
+        Ok(hash)
+    }
+}
+
+pub fn generate_random_tree(
+    max_depth: u32,
+) -> Result<(NodeHash, HashMap<NodeHash, MerkleNode>), String> {
+    let mut storage = HashMap::new();
+
+    // Start tree generation from the root directory at depth 0
+    let root_hash = generate_random_directory_node(0, max_depth, &mut storage)?;
+
+    Ok((root_hash, storage))
+}
+
+pub fn generate_base_tree() -> (NodeHash, HashMap<NodeHash, MerkleNode>) {
+    let mut res = HashMap::new();
+
+    let node1 = MerkleNode::Chunk(ChunkNode::new_random());
+    let hash1 = hash(&node1.serialize());
+
+    let node2 = MerkleNode::Chunk(ChunkNode::new_random());
+    let hash2 = hash(&node2.serialize());
+
+    res.insert(hash1, node1);
+    res.insert(hash2, node2);
+
+    let node3 = MerkleNode::Chunk(ChunkNode::new_random());
+    let hash3 = hash(&node3.serialize());
+
+    res.insert(hash3, node3);
+
+    let dir1 = MerkleNode::Directory(DirectoryNode {
+        entries: [DirectoryEntry {
+            filename: generate_random_filename(),
+            content_hash: hash3,
+        }]
+        .to_vec(),
+    });
+    let hash_dir1 = hash(&dir1.serialize());
+
+    res.insert(hash_dir1, dir1);
+
+    let root = MerkleNode::Directory(DirectoryNode {
+        entries: [
+            DirectoryEntry {
+                filename: generate_random_filename(),
+                content_hash: hash1,
+            },
+            DirectoryEntry {
+                filename: generate_random_filename(),
+                content_hash: hash2,
+            },
+            DirectoryEntry {
+                filename: generate_random_filename(),
+                content_hash: hash_dir1,
+            },
+        ]
+        .to_vec(),
+    });
+
+    let root_hash = hash(&root.serialize());
+    res.insert(root_hash, root);
+
+    (root_hash, res)
+}

client-network/src/datum_parsing.rs

@@ -6,28 +6,20 @@ const DIRECTORY: u8 = 1;
 const BIG: u8 = 2;
 const BIGDIRECTORY: u8 = 3;
 
-fn parse_received_datum(recevied_datum: Vec<u8>, datum_length: usize, mut tree: MerkleTree) {
+pub fn parse_received_datum(
-    if datum_length > recevied_datum.len() {
+    recevied_datum: Vec<u8>,
-        return;
+    datum_length: usize,
-    }
+) -> Option<([u8; 32], MerkleNode)> {
-    if datum_length < 32 + 64 {
-        return;
-    }
     let hash_name: [u8; 32] = recevied_datum[..32].try_into().expect("error");
     let sigstart = datum_length - 64;
     let value = &recevied_datum[32..sigstart];
     let value_slice = value.to_vec();
-    let signature: [u8; 32] = recevied_datum[sigstart..datum_length]
-        .try_into()
-        .expect("Taille incorrecte");
     let datum_type = value_slice[0];
     match datum_type {
-        CHUNK => {
+        CHUNK => Some((
-            tree.data.insert(
+            hash_name,
-                hash_name,
+            MerkleNode::Chunk(crate::ChunkNode { data: value_slice }),
-                MerkleNode::Chunk(crate::ChunkNode { data: value_slice }),
+        )),
-            );
-        }
         DIRECTORY => {
             let nb_entries = value_slice[1];
             let mut dir_entries = Vec::new();
@@ -39,30 +31,35 @@ fn parse_received_datum(recevied_datum: Vec<u8>, datum_length: usize, mut tree:
                 hash.copy_from_slice(&recevied_datum[offset + 32..offset + 64]);
                 // envoyer un datum request
                 dir_entries.push(DirectoryEntry {
-                    filename: name.to_vec(),
+                    filename: name.try_into().expect("incorrect size"),
                     content_hash: hash,
                 });
             }
 
             let current = DirectoryNode::new(dir_entries);
             match current {
-                Ok(current_node) => {
+                Ok(current_node) => Some((hash_name, MerkleNode::Directory(current_node))),
-                    tree.data
-                        .insert(hash_name, MerkleNode::Directory(current_node));
-                }
                 Err(e) => {
                     println!("{}", e);
+                    None
                 }
             }
         }
         BIG => {
             let chlidren: Vec<NodeHash> = Vec::new();
+            Some((
+                hash_name,
+                MerkleNode::Big(crate::BigNode {
+                    children_hashes: chlidren,
+                }),
+            ))
+            /*let chlidren: Vec<NodeHash> = Vec::new();
             tree.data.insert(
                 hash_name,
                 MerkleNode::Big(crate::BigNode {
                     children_hashes: chlidren,
                 }),
-            );
+            );*/
         }
         BIGDIRECTORY => {
             let nb_entries = value_slice[1];
@@ -74,23 +71,18 @@ fn parse_received_datum(recevied_datum: Vec<u8>, datum_length: usize, mut tree:
                 let mut hash = [0u8; 32];
                 hash.copy_from_slice(&recevied_datum[offset + 32..offset + 64]);
                 // envoyer un datum request
-                dir_entries.push(DirectoryEntry {
+                dir_entries.push(hash);
-                    filename: name.to_vec(),
-                    content_hash: hash,
-                });
             }
 
             let current = BigDirectoryNode::new(dir_entries);
             match current {
-                Ok(current_node) => {
+                Ok(current_node) => Some((hash_name, MerkleNode::BigDirectory(current_node))),
-                    tree.data
-                        .insert(hash_name, MerkleNode::BigDirectory(current_node));
-                }
                 Err(e) => {
                     println!("{}", e);
+                    None
                 }
             }
         }
-        _ => {}
+        _ => None,
     }
 }

client-network/src/fetchsocketaddresserror.rs

@@ -0,0 +1,26 @@
+use std::fmt;
+
+#[derive(Debug)]
+pub enum FetchSocketAddressError {
+    NoIPV4Address,
+    NoRegisteredAddresses,
+    NoResponseFromUser,
+    ClientError(String),
+}
+
+impl fmt::Display for FetchSocketAddressError {
+    fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
+        match self {
+            FetchSocketAddressError::NoIPV4Address => write!(f, "No IPv4 Address registered."),
+            FetchSocketAddressError::NoRegisteredAddresses => {
+                write!(f, "No Registered Addresses found.")
+            }
+            FetchSocketAddressError::NoResponseFromUser => {
+                write!(f, "No Response from user after contact.")
+            }
+            FetchSocketAddressError::ClientError(error) => {
+                write!(f, "Client error : {}", error)
+            }
+        }
+    }
+}

client-network/src/lib.rs

@@ -1,27 +1,34 @@
 mod cryptographic_signature;
 mod data;
+mod datum_generation;
 mod datum_parsing;
+mod fetchsocketaddresserror;
 mod message_handling;
 mod messages_channels;
 mod messages_structure;
 mod peers_refresh;
 mod registration;
 mod server_communication;
+mod threads_handling;
+mod timestamp;
 
+use crate::fetchsocketaddresserror::FetchSocketAddressError;
+use crate::peers_refresh::*;
+use crate::timestamp::Timestamp;
 use crate::{
     cryptographic_signature::CryptographicSignature,
     message_handling::EventType,
-    messages_channels::{MultipleSenders, start_receving_thread},
+    messages_channels::{MultipleSenders, start_receving_thread, start_retry_thread},
-    messages_structure::{
+    messages_structure::{NATTRAVERSALREQUEST, PING, ROOTREQUEST, construct_message},
-        NATTRAVERSALREQUEST, NATTRAVERSALREQUEST2, ROOTREQUEST, construct_message,
-    },
     peers_refresh::HandshakeHistory,
     registration::{parse_addresses, perform_handshake, register_with_the_server},
     server_communication::{generate_id, get_peer_list},
+    threads_handling::Worker,
 };
 use std::{
     io::Error,
     net::{IpAddr, Ipv4Addr, UdpSocket},
+    time::Duration,
 };
 use std::{
     net::SocketAddr,
@@ -32,13 +39,17 @@ pub struct P2PSharedData {
     shared_socket: Arc<UdpSocket>,
     shared_cryptopair: Arc<CryptographicSignature>,
     shared_messageslist: Arc<Mutex<HashMap<i32, EventType>>>,
+    shared_messagesreceived: Arc<Mutex<HashMap<String, (EventType, Timestamp)>>>,
     shared_senders: Arc<MultipleSenders>,
     server_name: Arc<Mutex<String>>,
+    server_address: Arc<Mutex<String>>,
     handshake_peers: Arc<HandshakeHistory>,
+    threads: Vec<Worker>,
 }
 
 use bytes::Bytes;
-use p256::pkcs8::der::pem::Base64Encoder;
+use reqwest::Client;
+use tokio::time::sleep;
 
 impl P2PSharedData {
     pub fn new(
@@ -46,24 +57,33 @@ impl P2PSharedData {
         cmd_tx: crossbeam_channel::Sender<NetworkEvent>,
     ) -> Result<P2PSharedData, Error> {
         let messages_list = HashMap::<i32, EventType>::new();
+        let messagesrecv_list = HashMap::<String, (EventType, Timestamp)>::new();
         let username = String::from(username);
         let crypto_pair = CryptographicSignature::new(username);
         let socket = UdpSocket::bind("0.0.0.0:0")?;
         let shared_socket = Arc::new(socket);
         let shared_cryptopair = Arc::new(crypto_pair);
         let shared_messageslist = Arc::new(Mutex::new(messages_list));
+        let shared_messagesreceived = Arc::new(Mutex::new(messagesrecv_list));
 
-        let senders = MultipleSenders::new(1, &shared_socket, cmd_tx);
+        let mut threads = Vec::new();
+
+        let senders = MultipleSenders::new(1, &shared_socket, cmd_tx, &mut threads);
         let shared_senders = Arc::new(senders);
         let server_name = Arc::new(Mutex::new("".to_string()));
+        let server_address = Arc::new(Mutex::new("".to_string()));
         let handhsake_peers = Arc::new(HandshakeHistory::new());
+
         Ok(P2PSharedData {
             shared_socket: shared_socket,
             shared_cryptopair: shared_cryptopair,
             shared_messageslist: shared_messageslist,
+            shared_messagesreceived: shared_messagesreceived,
             shared_senders: shared_senders,
             server_name: server_name,
+            server_address: server_address,
             handshake_peers: handhsake_peers,
+            threads,
         })
     }
     pub fn socket(&self) -> Arc<UdpSocket> {
@@ -76,32 +96,52 @@ impl P2PSharedData {
     pub fn messages_list(&self) -> Arc<Mutex<HashMap<i32, EventType>>> {
         self.shared_messageslist.clone()
     }
+    pub fn messages_received(&self) -> Arc<Mutex<HashMap<String, (EventType, Timestamp)>>> {
+        self.shared_messagesreceived.clone()
+    }
     pub fn servername(&self) -> String {
-        let guard = self.server_name.lock().unwrap();
+        let guard = {
+            let maybe_sn = self.server_name.lock().unwrap();
+            maybe_sn.clone()
+        };
+        guard.to_string()
+    }
+    pub fn serveraddress(&self) -> String {
+        let guard = {
+            let maybe_sn = self.server_address.lock().unwrap();
+            maybe_sn.clone()
+        };
         guard.to_string()
     }
     pub fn set_servername(&self, new: String) {
         let mut guard = self.server_name.lock().unwrap();
         *guard = new
     }
+    pub fn set_serveraddress(&self, new: String) {
+        let mut guard = self.server_address.lock().unwrap();
+        *guard = new
+    }
     pub fn senders(&self) -> Arc<MultipleSenders> {
         self.shared_senders.clone()
     }
     pub fn socket_ref(&self) -> &UdpSocket {
         &*self.shared_socket
     }
-
+    pub fn handshakes(&self) -> Arc<HandshakeHistory> {
+        self.handshake_peers.clone()
+    }
     pub fn cryptopair_ref(&self) -> &CryptographicSignature {
         &*self.shared_cryptopair
     }
-    pub fn handshake_ref(&self) -> &HandshakeHistory {
-        &*self.handshake_peers
-    }
 
     pub fn messages_list_ref(&self) -> &Mutex<HashMap<i32, EventType>> {
         &*self.shared_messageslist
     }
 
+    pub fn messages_received_ref(&self) -> &Mutex<HashMap<String, (EventType, Timestamp)>> {
+        &*self.shared_messagesreceived
+    }
+
     pub fn senders_ref(&self) -> &MultipleSenders {
         &*self.shared_senders
     }
@@ -110,6 +150,15 @@ impl P2PSharedData {
         let mut map = self.shared_messageslist.lock().unwrap();
         map.insert(id, evt);
     }
+    pub fn threads(&mut self) -> &mut Vec<Worker> {
+        &mut self.threads
+    }
+
+    pub fn close_threads(&mut self) {
+        for w in self.threads.drain(..) {
+            w.stop();
+        }
+    }
 }
 
 /// Messages sent to the Network thread by the GUI.
@@ -118,7 +167,7 @@ pub enum NetworkCommand {
     ServerHandshake(String, String),    // ServerName
     FetchPeerList(String),              // ServerIP
     RegisterAsPeer(String),
-    Ping(String),
+    Ping(String, String),
     NatTraversal(String, String),
     ConnectPeer((String, bool)), // IP:PORT
     RequestFileTree(String),     // peer_id
@@ -137,9 +186,10 @@ pub enum NetworkEvent {
     ConnectedHandshake(),
     Disconnected(),
     Error(String),
+    Success(String),
     PeerConnected(String),
     PeerListUpdated(Vec<(String, bool)>),
-    FileTreeReceived(String, Vec<MerkleNode>), // peer_id, content
+    FileTreeReceived([u8; 32], MerkleNode), // peer_id, content
     DataReceived(String, MerkleNode),
     FileTreeRootReceived(String, NodeHash),
     HandshakeFailed(),
@@ -176,8 +226,6 @@ pub fn start_p2p_executor(
     // Use tokio to spawn the asynchronous networking logic
     tokio::task::spawn(async move {
         // P2P/Networking Setup goes here
-        let handshake_history = Arc::new(Mutex::new(HandshakeHistory::new()));
-        let handshake_clone = handshake_history.clone();
 
         println!("Network executor started.");
 
@@ -188,8 +236,21 @@ pub fn start_p2p_executor(
                 match cmd {
                     NetworkCommand::ServerHandshake(username, ip) => {
                         println!("server handshake called");
-                        if let Some(sd) = shared_data.as_ref() {
+                        if let Some(sd) = shared_data.as_mut() {
-                            start_receving_thread(sd, event_tx.clone(), &handshake_clone);
+                            start_receving_thread(sd, event_tx.clone(), sd.handshakes());
+                            start_retry_thread(
+                                sd.senders(),
+                                4,
+                                sd.messages_list(),
+                                sd.threads().as_mut(),
+                            );
+                            update_handshake(
+                                sd.senders(),
+                                sd.cryptopair(),
+                                sd.messages_list(),
+                                sd.handshake_peers.get_username_peerinfo_map(),
+                            );
+
                             let res =
                                 perform_handshake(&sd, username, ip, event_tx.clone(), true).await;
                         } else {
@@ -209,30 +270,35 @@ pub fn start_p2p_executor(
                     NetworkCommand::Discover(username, hash, ip) => {
                         // envoie un handshake au peer, puis un root request
                         if let Some(sd) = shared_data.as_ref() {
-                            let res = {
+                            let res = sd.handshake_peers.get_peer_info_username(username.clone());
-                                let m = handshake_clone.lock().unwrap();
-                                m.get_peer_info_username(username.clone()).cloned()
-                            };
                             match res {
                                 Some(peerinfo) => {
+                                    let id = generate_id();
                                     // envoyer un root request
                                     let rootrequest = construct_message(
                                         ROOTREQUEST,
                                         Vec::new(),
-                                        generate_id(),
+                                        id,
                                         sd.cryptopair_ref(),
                                     );
+                                    println!("matching");
 
                                     match rootrequest {
                                         None => {}
                                         Some(resp_msg) => {
+                                            sd.add_message(id, EventType::RootRequest);
                                             println!("msg_sent:{:?}", resp_msg);
-                                            sd.senders_ref().send_via(
+                                            sd.senders_ref().add_message_to_retry_queue(
-                                                0,
+                                                resp_msg.clone(),
+                                                peerinfo.ip.to_string(),
+                                                false,
+                                            );
+
+                                            sd.senders_ref().send_dispatch(
                                                 resp_msg,
                                                 peerinfo.ip.to_string(),
                                                 false,
-                                                sd.messages_list_ref(),
+                                                sd.messages_list(),
                                             );
                                         }
                                     }
@@ -302,6 +368,7 @@ pub fn start_p2p_executor(
                         }*/
                     }
                     NetworkCommand::FetchPeerList(ip) => {
+                        println!("[Network] FetchPeerList() called");
                         if ip == "" {
                             let res = event_tx.send(NetworkEvent::Error(
                                 "Not registered to any server".to_string(),
@@ -331,19 +398,65 @@ pub fn start_p2p_executor(
                                 Err(e) => println!("error"),
                             }
                         }
-                        println!("[Network] FetchPeerList() called");
                     }
                     NetworkCommand::RegisterAsPeer(_) => {
                         println!("[Network] RegisterAsPeer() called");
                     }
-                    NetworkCommand::Ping(String) => {
+                    NetworkCommand::Ping(str, ip) => {
-                        println!("[Network] Ping() called");
+                        println!("[Network] Ping({}) called", str);
+                        if let Some(sd) = shared_data.as_ref() {
+                            let id = generate_id();
+                            sd.add_message(id, EventType::Ping);
+                            let pingrequest =
+                                construct_message(PING, Vec::new(), id, sd.cryptopair_ref());
+                            let peer_address =
+                                get_socket_address(str, ip, shared_data.as_ref()).await;
+                            match peer_address {
+                                Ok(addr) => {
+                                    //if let Some(ping) = pingrequest {
+                                    //    sd.senders_ref().add_message_to_retry_queue(
+                                    //        ping.clone(),
+                                    //        addr.to_string(),
+                                    //        false,
+                                    //    );
+                                    //    sd.senders_ref().send_dispatch(
+                                    //        ping,
+                                    //        addr.to_string(),
+                                    //        false,
+                                    //        sd.messages_list(),
+                                    //    );
+                                    //}
+                                    match event_tx.send(NetworkEvent::Success(format!(
+                                        "Successfully sent ping message to {}.",
+                                        addr.to_string()
+                                    ))) {
+                                        Ok(_) => {}
+                                        Err(e) => {
+                                            eprintln!("NetworkEvent error : {}", e);
+                                        }
+                                    };
+                                }
+                                Err(err_msg) => {
+                                    match event_tx.send(NetworkEvent::Error(err_msg.to_string())) {
+                                        Ok(_) => {}
+                                        Err(e) => {
+                                            eprintln!("NetworkEvent error : {}", e);
+                                        }
+                                    }
+                                }
+                            }
+                        }
                     }
                     NetworkCommand::Disconnect() => {
                         if let Some(sd) = shared_data.as_ref() {
                             println!("Disconnecting: {}", &sd.cryptopair().username);
                             shared_data = None;
-                            let res = event_tx.send(NetworkEvent::Disconnected());
+                            match event_tx.send(NetworkEvent::Disconnected()) {
+                                Ok(_) => {}
+                                Err(e) => {
+                                    eprintln!("NetworkEvent error : {}", e);
+                                }
+                            }
                         } else {
                             println!("no p2p data");
                         }
@@ -359,44 +472,44 @@ pub fn start_p2p_executor(
                         if let Some(sd) = shared_data.as_ref() {
                             println!("username:{}, ip:{}", username, ip);
                             // user server to send nattraversal request
-                            let server_addr_query =
+                            let server_addr = sd.serveraddress();
-                                get_socket_address(sd.servername().clone(), ip.clone());
+                            let peer_addr_query = get_socket_address(
-                            let peer_addr_query = get_socket_address(username.clone(), ip.clone());
+                                username.clone(),
+                                ip.clone(),
+                                shared_data.as_ref(),
+                            );
 
-                            match server_addr_query.await {
+                            match peer_addr_query.await {
-                                Some(server_addr) => match peer_addr_query.await {
+                                Ok(peer_addr) => {
-                                    Some(peer_addr) => {
+                                    let payload = socket_addr_to_vec(peer_addr);
-                                        let payload = socket_addr_to_vec(server_addr);
 
-                                        print!("{:?}", payload.clone());
+                                    print!("{:?}", payload.clone());
 
-                                        let natreq = construct_message(
+                                    let id = generate_id();
-                                            NATTRAVERSALREQUEST,
+                                    let natreq = construct_message(
-                                            server_addr.to_string().into_bytes(),
+                                        NATTRAVERSALREQUEST,
-                                            generate_id(),
+                                        payload.clone(),
-                                            &sd.cryptopair(),
+                                        id.clone(),
-                                        );
+                                        &sd.cryptopair(),
+                                    );
 
-                                        sd.senders_ref().send_via(
+                                    sd.add_message(id, EventType::NatTraversal);
-                                            0,
+                                    sd.senders_ref().send_dispatch(
-                                            natreq.expect(
+                                        natreq.expect(
-                                                "couldnt construct message nattraversalrequest2",
+                                            "couldnt construct message nattraversalrequest2",
-                                            ),
+                                        ),
-                                            server_addr.to_string(),
+                                        server_addr.to_string(),
-                                            false,
+                                        false,
-                                            sd.messages_list_ref(),
+                                        sd.messages_list(),
-                                        );
+                                    );
+                                }
+                                Err(err_msg) => {
+                                    match event_tx.send(NetworkEvent::Error(err_msg.to_string())) {
+                                        Ok(_) => {}
+                                        Err(e) => {
+                                            eprintln!("NetworkEvent error : {}", e);
+                                        }
                                     }
-                                    None => {
-                                        let err_msg = format!("failed to retreive socket address")
-                                            .to_string();
-                                        let res = event_tx.send(NetworkEvent::Error(err_msg));
-                                    }
-                                },
-                                None => {
-                                    let err_msg =
-                                        format!("failed to retreive socket address").to_string();
-                                    let res = event_tx.send(NetworkEvent::Error(err_msg));
                                 }
                             }
                         }
@@ -410,7 +523,7 @@ pub fn start_p2p_executor(
             // event_tx.send(NetworkEvent::PeerConnected("NewPeerID".to_string())).unwrap();
 
             // Avoid spinning too fast
-            tokio::time::sleep(std::time::Duration::from_millis(50)).await;
+            sleep(std::time::Duration::from_millis(50)).await;
         }
     })
 }
@@ -440,16 +553,134 @@ fn parse_pack(s: &str) -> Option<[u8; 6]> {
     ])
 }
 
+async fn quick_ping(addr: &SocketAddr, timeout_ms: u64, sd: &P2PSharedData) -> bool {
+    let id = generate_id();
+    let pingreq = construct_message(PING, Vec::new(), id, &sd.shared_cryptopair);
+
+    if let Some(ping) = pingreq {
+        sd.add_message(id, EventType::Ping);
+        sd.senders_ref()
+            .send_dispatch(ping, addr.to_string(), false, sd.messages_list());
+    }
+
+    sleep(Duration::from_millis(timeout_ms)).await;
+
+    let msg_list = sd.messages_list_ref().lock().expect("yooo");
+    let res = !msg_list.contains_key(&id);
+
+    for (id, evt) in msg_list.iter() {
+        println!("id : {}, evt : {}", id, evt.to_string());
+    }
+    println!("message list doesnt contain key? {}", res);
+
+    res
+}
+
 ///
 /// sends a get request to the server to get the socket address of the given peer
 ///
 
-pub async fn get_socket_address(username: String, ip: String) -> Option<SocketAddr> {
+pub async fn get_socket_address(
-    let client = reqwest::Client::new();
+    username: String,
+    ip: String,
+    shared_data: Option<&P2PSharedData>,
+) -> Result<SocketAddr, FetchSocketAddressError> {
+    let sd = shared_data.expect("No shared data");
+
+    let client = match Client::builder().timeout(Duration::from_secs(5)).build() {
+        Ok(c) => c,
+        Err(e) => {
+            return Err(FetchSocketAddressError::ClientError(e.to_string()));
+        }
+    };
+
+    let uri = format!("{}/peers/{}/addresses", ip, username);
+    let res = match client.get(&uri).send().await {
+        Ok(r) => r,
+        Err(e) => return Err(FetchSocketAddressError::ClientError(e.to_string())),
+    };
+
+    if res.status().is_success() {
+        println!("Successfully retrieved the addresses. {}", res.status());
+    } else {
+        eprintln!(
+            "Failed to get the peers addresses from the server. Status: {}",
+            res.status()
+        );
+    }
+
+    let body = match res.bytes().await {
+        Ok(b) => b,
+        Err(e) => {
+            return Err(FetchSocketAddressError::ClientError(e.to_string()));
+        }
+    };
+
+    let s = match String::from_utf8(body.to_vec()) {
+        Ok(st) => st,
+        Err(e) => {
+            return Err(FetchSocketAddressError::ClientError(e.to_string()));
+        }
+    };
+
+    let addresses = parse_addresses(&s); // assumes parse_addresses: &str -> Vec<SocketAddr>
+    if addresses.is_empty() {
+        return Err(FetchSocketAddressError::NoRegisteredAddresses);
+    } else if !addresses.iter().any(|a| matches!(a, SocketAddr::V4(_))) {
+        return Err(FetchSocketAddressError::NoIPV4Address);
+    }
+
+    for addr in addresses {
+        println!("trying address : {}", addr);
+        if quick_ping(&addr, 5000, sd).await {
+            return Ok(addr);
+        }
+
+        let payload = socket_addr_to_vec(addr);
+        let id = generate_id();
+
+        let natreq = construct_message(NATTRAVERSALREQUEST, payload.clone(), id, &sd.cryptopair());
+
+        sd.add_message(id, EventType::NatTraversal);
+        sd.senders_ref().send_dispatch(
+            natreq.expect("couldnt construct message nattraversalrequest2"),
+            sd.serveraddress().to_string(),
+            false,
+            sd.messages_list(),
+        );
+
+        sleep(Duration::from_millis(5000)).await;
+
+        let maybe_entry = {
+            let guard = sd.messages_received_ref().lock().unwrap();
+            guard.clone()
+        }; // guard dropped
+
+        for (id, (evt, time)) in maybe_entry.iter() {
+            println!("{} : {} at {}", id, evt.to_string(), time.to_string());
+            if id.eq(&addr.to_string()) && Timestamp::now().diff(time) < 10 {
+                println!("received message from address, returning said address..");
+                return Ok(addr);
+            }
+        }
+
+        if quick_ping(&addr, 15000, sd).await {
+            return Ok(addr);
+        }
+    }
+
+    Err(FetchSocketAddressError::NoResponseFromUser)
+}
+
+pub async fn get_server_address(username: String, ip: String) -> Option<SocketAddr> {
+    let client = Client::builder()
+        .timeout(Duration::from_secs(5))
+        .build()
+        .expect("cannot create client");
     let uri = format!("{}/peers/{}/addresses", ip, username);
     let res = client.get(uri).send().await.expect("couldnt get response");
     if res.status().is_success() {
-        println!("Successfully retreived the addresses.");
+        println!("Successfully retreived the addresses. {}", res.status());
     } else {
         eprintln!(
             "Failed to get the peers addresses from the server. Status: {}",
@@ -461,31 +692,12 @@ pub async fn get_socket_address(username: String, ip: String) -> Option<SocketAd
     match String::from_utf8(body.to_vec()) {
         Ok(s) => {
             let addresses = parse_addresses(&s);
-            addresses.iter().copied().find(|a| a.is_ipv4())
+            if let Some(first) = addresses.first() {
+                Some(first.clone())
+            } else {
+                None
+            }
         }
         Err(_) => None,
     }
 }
-
-pub async fn get_possible_socket_address(username: String, ip: String) -> Vec<SocketAddr> {
-    let client = reqwest::Client::new();
-    let uri = format!("{}/peers/{}/addresses", ip, username);
-    let res = client.get(uri).send().await.expect("couldnt get response");
-    if res.status().is_success() {
-        println!("Successfully retreived the addresses.");
-    } else {
-        eprintln!(
-            "Failed to get the peers addresses from the server. Status: {}",
-            res.status()
-        );
-    }
-    let body: Bytes = res.bytes().await.expect("couldnt get bytes");
-
-    match String::from_utf8(body.to_vec()) {
-        Ok(s) => {
-            let addresses = parse_addresses(&s);
-            addresses.iter().copied().filter(|a| a.is_ipv4()).collect()
-        }
-        Err(_) => Vec::new(),
-    }
-}

client-network/src/message_handling.rs

@@ -1,22 +1,63 @@
+use tokio::sync::oneshot;
+
 use crate::{
-    NetworkEvent, NodeHash,
+    NetworkEvent, NodeHash, P2PSharedData,
     cryptographic_signature::{
         CryptographicSignature, get_peer_key, sign_message, verify_signature,
     },
+    datum_parsing::parse_received_datum,
     messages_channels::MultipleSenders,
     messages_structure::construct_message,
     peers_refresh::HandshakeHistory,
     registration,
     server_communication::generate_id,
+    timestamp::Timestamp,
+};
+use std::{
+    collections::HashMap,
+    default,
+    net::{Ipv4Addr, SocketAddr},
 };
-use std::{collections::HashMap, net::SocketAddr};
 use std::{
     net::IpAddr,
     sync::{Arc, Mutex},
 };
 
+// Types of messages that await for a response
+#[derive(Debug, Clone)]
 pub enum EventType {
-    SendRootRequest,
+    HelloThenRootRequest,
+    Hello,
+    RootRequest,
+    Ping,
+    NatTraversal,
+    DatumRequest,
+    Unknown,
+}
+
+impl EventType {
+    pub fn to_string(&self) -> String {
+        match self {
+            EventType::HelloThenRootRequest => "HelloThenRootRequest".to_owned(),
+            EventType::Hello => "Hello".to_owned(),
+            EventType::RootRequest => "RootRequest".to_owned(),
+            EventType::Ping => "Ping".to_owned(),
+            EventType::NatTraversal => "NatTraversal".to_owned(),
+            EventType::DatumRequest => "DatumRequest".to_owned(),
+            EventType::Unknown => "Unknown".to_owned(),
+        }
+    }
+
+    pub fn from_msgtype(msgtype: u8) -> EventType {
+        match msgtype {
+            PING => EventType::Ping,
+            HELLO => EventType::Hello,
+            ROOTREQUEST => EventType::RootRequest,
+            NATTRAVERSALREQUEST => EventType::NatTraversal,
+            DATUMREQUEST => EventType::DatumRequest,
+            _ => EventType::Unknown,
+        }
+    }
 }
 
 const ID: usize = 4;
@@ -25,7 +66,7 @@ const LENGTH: usize = 7;
 const EXTENSIONS: usize = 4;
 const SIGNATURE: usize = 64;
 
-const PING: u8 = 0;
+pub const PING: u8 = 0;
 const OK: u8 = 128;
 const ERROR: u8 = 129;
 const HELLO: u8 = 1;
@@ -40,6 +81,7 @@ const NATTRAVERSALREQUEST2: u8 = 5;
 
 pub fn handle_recevied_message(
     messages_list: &Arc<Mutex<HashMap<i32, EventType>>>,
+    messages_received: &Arc<Mutex<HashMap<String, (EventType, Timestamp)>>>,
     recevied_message: &Vec<u8>,
     crypto_pair: &CryptographicSignature,
     //socket_addr: &SocketAddr,
@@ -47,7 +89,7 @@ pub fn handle_recevied_message(
     server_name: &String,
     cmd_tx: crossbeam_channel::Sender<NetworkEvent>,
     ip: SocketAddr,
-    handhsake_history: &Arc<Mutex<HandshakeHistory>>,
+    handhsake_history: Arc<HandshakeHistory>,
 ) {
     if recevied_message.len() < 4 {
         return;
@@ -78,6 +120,7 @@ pub fn handle_recevied_message(
         cmd_tx,
         ip,
         messages_list,
+        messages_received,
         handhsake_history,
         senders,
     );
@@ -86,80 +129,14 @@ pub fn handle_recevied_message(
         None => {}
         Some(resp_msg) => {
             println!("msg_sent:{:?}", resp_msg);
-            senders.send_via(
+            senders.send_dispatch(
-                0,
                 resp_msg,
                 ip.to_string(),
                 is_resp_to_server_handshake,
-                messages_list,
+                messages_list.clone(),
             );
         }
     }
-
-    // Lock the mutex to access the HashMap
-    /*let list = messages_list.lock().unwrap();
-
-    let eventtype = list.get(&id); // Clone the enum so we can release the lock if needed
-    match eventtype {
-        Some(EventType::ServerHelloReply) => {
-            /*registration::register_ip_addresses(
-                 crypto_pair,
-                 socket_addr.to_string(),
-                 senders,
-                 &messages_list, // Pass the mutable reference inside the lock
-            546,
-             );*/
-        }
-        Some(_) => print!("Not implemented"),
-        None => {
-            let message_type = recevied_message[4];
-
-            // Handle handshake
-            if message_type == 1 {
-                let mut resp_to_serv = false;
-                println!("verify the signature");
-                let parsed_received_message = HandshakeMessage::parse(recevied_message.to_vec());
-                let received_name = String::from_utf8(parsed_received_message.name).expect("error");
-                let peer_pubkey = tokio::runtime::Runtime::new()
-                    .unwrap()
-                    .block_on(get_peer_key(&received_name))
-                    .expect("failed to retrieve public key");
-
-                if received_name == server_name.to_string() {
-                    resp_to_serv = true;
-                }
-
-                if !verify_signature(peer_pubkey, recevied_message) {
-                    println!(
-                        "incorrect signature from given peer: {}, ignoring message {}",
-                        &received_name, id
-                    );
-                } else {
-                    // verify if this is a server handshake request
-                    let username_size = crypto_pair.username.len();
-                    let hello_handshake = HandshakeMessage::helloReply(
-                        id as u32,
-                        username_size as u16 + 4,
-                        crypto_pair.username.clone(),
-                    );
-                    //HandshakeMessage::display(&hello_handshake);
-                    let hello_handshake_serialized = hello_handshake.serialize();
-                    let message_signed = sign_message(crypto_pair, &hello_handshake_serialized);
-                    senders.send_via(0, message_signed, socket_addr.to_string(), resp_to_serv);
-                    let mut list = messages_list.lock().expect("Failed to lock messages_list");
-                    match list.get(&id) {
-                        Some(_) => {
-                            list.remove(&id);
-                        }
-                        None => {
-                            list.insert(id, EventType::ServerHelloReply);
-                        }
-                    }
-                }
-            }
-            print!("Message not found for ID: {}", id)
-        }
-    }*/
 }
 
 pub fn parse_message(
@@ -169,10 +146,10 @@ pub fn parse_message(
     cmd_tx: crossbeam_channel::Sender<NetworkEvent>,
     ip: SocketAddr,
     messages_list: &Arc<Mutex<HashMap<i32, EventType>>>,
-    handhsake_history_mutex: &Arc<Mutex<HandshakeHistory>>,
+    messages_received: &Arc<Mutex<HashMap<String, (EventType, Timestamp)>>>,
+    handhsake_history: Arc<HandshakeHistory>,
     senders: &MultipleSenders,
 ) -> Option<Vec<u8>> {
-    let mut handhsake_history = handhsake_history_mutex.lock().unwrap();
     let cmd_tx_clone = cmd_tx.clone();
 
     let id_bytes: [u8; 4] = received_message[0..ID]
@@ -181,6 +158,14 @@ pub fn parse_message(
 
     let msgtype = received_message[ID];
 
+    messages_received
+        .lock()
+        .expect("couldnt lock received map")
+        .insert(
+            ip.to_string(),
+            (EventType::from_msgtype(msgtype), Timestamp::now()),
+        );
+
     let length_bytes: [u8; 2] = received_message[TYPE..LENGTH]
         .try_into()
         .expect("Taille incorrecte");
@@ -188,8 +173,9 @@ pub fn parse_message(
     let msg_length = u16::from_be_bytes(length_bytes) as usize;
     // verify signature
     match msgtype {
-        HELLO | HELLOREPLY | NODATUM | NATTRAVERSALREQUEST | NATTRAVERSALREQUEST2 => {
+        HELLO | HELLOREPLY => {
             let ilength = u16::from_be_bytes(length_bytes);
+            println!("hello");
             println!("name received length: {}", ilength);
             let received_name = &received_message[LENGTH + EXTENSIONS..LENGTH + ilength as usize];
             let received_username = String::from_utf8(received_name.to_vec());
@@ -207,12 +193,10 @@ pub fn parse_message(
                         HELLOREPLY => {
                             handhsake_history.add_new_handshake(peer_pubkey, "".to_string(), ip);
                         }
-                        _ => {}
+                        _ => {
+                            println!("no handshake added");
+                        }
                     }
-                    let signature: [u8; SIGNATURE] = received_message
-                        [LENGTH + msg_length..LENGTH + msg_length + SIGNATURE]
-                        .try_into()
-                        .expect("Taille incorrecte");
                     if !verify_signature(peer_pubkey, &received_message) {
                         println!(
                             "incorrect signature from given peer: {}, ignoring message of type {} with id {}",
@@ -227,7 +211,7 @@ pub fn parse_message(
                 }
             }
         }
-        ROOTREPLY => {
+        ROOTREPLY | NODATUM | NATTRAVERSALREQUEST | NATTRAVERSALREQUEST2 => {
             let ilength = u16::from_be_bytes(length_bytes);
             println!("name received length: {}", ilength);
             if let Some(peerinfo) = handhsake_history.get_peer_info_ip(ip.to_string()) {
@@ -249,17 +233,25 @@ pub fn parse_message(
     // Message handling
     let mut constructed_message: Option<Vec<u8>> = None;
     match msgtype {
-        // PING
-        //
-        // envoie un OK
         PING => {
             constructed_message = construct_message(OK, Vec::new(), id, crypto_pair);
         }
-        //
+
-        // OK
+        OK => {
-        //
+            let mut guard = messages_list.lock().unwrap();
-        // rien ?
+            let res = guard.get(&id);
-        // si NATTRAVERSALREQUEST alors
+            match res {
+                Some(ev) => {
+                    println!("{:?}", ev);
+                    let _ = &guard.remove_entry(&id);
+                    println!("message {} retiré de la liste", id);
+                }
+                None => {
+                    println!("ping non trouvé");
+                }
+            }
+        }
+
         NATTRAVERSALREQUEST => {
             // send ok & send nattraversalrequest2 to peer
             constructed_message = construct_message(OK, Vec::new(), id, crypto_pair);
@@ -276,12 +268,11 @@ pub fn parse_message(
                 crypto_pair,
             );
 
-            senders.send_via(
+            senders.send_dispatch(
-                0,
                 natreq2.expect("couldnt construct message nattraversalrequest2"),
                 address,
                 false,
-                &messages_list,
+                messages_list.clone(),
             );
         }
 
@@ -291,22 +282,39 @@ pub fn parse_message(
 
             let ilength = u16::from_be_bytes(length_bytes);
             let received_address = &received_message[LENGTH..LENGTH + ilength as usize];
-            let address = String::from_utf8(received_address.to_vec()).expect("wrong name");
+            println!("received_address:{:?}", received_message);
+            //let addressv4 = IpAddr::V4(Ipv4Addr::from_octets(
+            //    received_address[0..4].try_into().expect("incorrect size"),
+            //));
+            let bytes: [u8; 4] = received_address[0..4].try_into().expect("incorrect size");
+            let addr_v4 = Ipv4Addr::from(bytes);
+            let addressv4 = IpAddr::V4(addr_v4);
+
+            let address = SocketAddr::new(
+                addressv4,
+                u16::from_be_bytes(received_address[4..6].try_into().expect("incorrect size")),
+            );
+
+            println!("ip: {}", address);
 
             let pingreq = construct_message(PING, Vec::new(), id, crypto_pair);
 
-            senders.send_via(
+            senders.send_dispatch(
-                0,
+                constructed_message.expect("couldnt construct message ping request"),
-                pingreq.expect("couldnt construct message ping request"),
+                ip.to_string(),
-                address,
                 false,
-                &messages_list,
+                messages_list.clone(),
             );
+
+            senders.send_dispatch(
+                pingreq.expect("couldnt construct message ping request"),
+                address.to_string(),
+                false,
+                messages_list.clone(),
+            );
+            constructed_message = None;
         }
-        //
+
-        // ERROR
-        //
-        // affiche un msg d'erreur
         ERROR => {
             if let Ok(err_received) =
                 String::from_utf8(received_message[LENGTH..(msg_length + LENGTH)].to_vec())
@@ -318,13 +326,22 @@ pub fn parse_message(
                 let _ = cmd_tx_clone.send(NetworkEvent::Error(err_msg));
             }
         }
-        // HELLO
+
-        //
-        // envoie une hello reply
-        //
         HELLO => {
             let mut payload = Vec::new();
 
+            let received_length = u16::from_be_bytes(
+                received_message[TYPE..LENGTH]
+                    .try_into()
+                    .expect("incorrect size"),
+            );
+            let received_username =
+                &received_message[LENGTH + EXTENSIONS..LENGTH + received_length as usize];
+            handhsake_history.update_peer_info(
+                ip.to_string(),
+                String::from_utf8(received_username.to_vec()).expect("invalid conversion"),
+            );
+
             payload.extend_from_slice(&0u32.to_be_bytes());
             payload.extend_from_slice(&crypto_pair.username.clone().as_bytes());
 
@@ -332,10 +349,7 @@ pub fn parse_message(
 
             return helloreply;
         }
-        // HELLOREPLY
+
-        //
-        //
-        // ajoute a la liste des peers handshake
         HELLOREPLY => {
             // ajoute l'username a la liste des peers handshake
             let received_length = u16::from_be_bytes(
@@ -350,123 +364,114 @@ pub fn parse_message(
                 String::from_utf8(received_username.to_vec()).expect("invalid conversion"),
             );
             // verifie s'il faut renvoyer un root request
-            let guard = messages_list.lock().expect("Échec du verrouillage");
+            let mut guard = messages_list.lock().expect("Échec du verrouillage");
             let res = guard.get(&id);
             match res {
                 Some(ev) => {
                     match ev {
-                        EventType::SendRootRequest => {
+                        EventType::HelloThenRootRequest => {
                             // envoyer la root request
+                            let _ = &guard.remove_entry(&id);
+                            println!("message {} retiré de la liste", id);
+
                             let rootrequest = construct_message(
                                 ROOTREQUEST,
                                 Vec::new(),
                                 generate_id(),
                                 crypto_pair,
                             );
+                            //&guard.insert(, v)
                             return rootrequest;
                         }
+                        EventType::Hello => {
+                            let _ = &guard.remove_entry(&id);
+                            println!("message {} retiré de la liste", id);
+                        }
+                        _ => {}
                     }
                 }
                 None => {}
             }
         }
-        //
-        // ROOTREQUEST
-        //
-        // envoie un root reply
-        //
-        // ROOTREPLY
-        //
         ROOTREPLY => {
             // recuperer le pseudo du peers ayant repondu
             let peers_exist = handhsake_history.get_peer_info_ip(ip.to_string());
             match peers_exist {
                 Some(peerinfo) => {
-                    // envoyer le hash a la gui
+                    let mut guard = messages_list.lock().expect("Échec du verrouillage");
-                    let received_hash: NodeHash = received_message[LENGTH..(32 + LENGTH)]
+                    let res = guard.get(&id);
-                        .try_into()
+                    match res {
-                        .expect("incorrect size");
+                        Some(ev) => {
-                    let res = cmd_tx_clone.send(NetworkEvent::FileTreeRootReceived(
+                            match ev {
-                        peerinfo.username.clone(),
+                                EventType::RootRequest => {
-                        received_hash,
+                                    // envoyer la root request
-                    ));
+                                    let _ = &guard.remove_entry(&id);
-                    println!("file tree sent")
+                                    println!("message {} retiré de la liste", id);
+
+                                    // envoyer le hash a la gui
+                                    let received_hash: NodeHash = received_message
+                                        [LENGTH..(32 + LENGTH)]
+                                        .try_into()
+                                        .expect("incorrect size");
+                                    let res =
+                                        cmd_tx_clone.send(NetworkEvent::FileTreeRootReceived(
+                                            peerinfo.username.clone(),
+                                            received_hash,
+                                        ));
+                                    println!("file tree sent");
+                                    // envoyer un datum
+                                    let mut payload = Vec::new();
+                                    payload.extend_from_slice(&received_hash);
+                                    let new_id = generate_id();
+                                    let datumreqest = construct_message(
+                                        DATUMREQUEST,
+                                        payload,
+                                        new_id,
+                                        crypto_pair,
+                                    );
+                                    constructed_message = datumreqest;
+                                    guard.insert(new_id, EventType::DatumRequest);
+                                }
+                                _ => {}
+                            }
+                        }
+                        None => {}
+                    }
                 }
                 None => {
                     eprintln!("no peers found");
                 }
             }
         }
-        //
+        DATUM => {
-        // DATUMREQUEST
+            let mut guard = messages_list.lock().expect("Échec du verrouillage");
-        //
+            let res = guard.get(&id);
-        // envoie le datum
+            match res {
-        //
+                Some(ev) => match ev {
-        // NODATUM
+                    EventType::DatumRequest => {
-        //
+                        let _ = &guard.remove_entry(&id);
-        // affiche un msg d'erreur
+                        println!("message {} retiré de la liste", id);
-        //
+                        let received_length = u16::from_be_bytes(
-        // DATUM
+                            received_message[TYPE..LENGTH]
-        //
+                                .try_into()
-        // parcourt le directory recu ou le big directory et renvoie une DATUMREQUEST pour chaque
+                                .expect("incorrect size"),
-        // directory ou big directory lu
+                        );
-        //
+                        let received_datum = &received_message[LENGTH..];
-        // NATTRAVERSALREQUEST
+                        let parsed_node =
-        //
+                            parse_received_datum(received_datum.to_vec(), received_length as usize);
-        // repond OK et envoie un NATTRAVERSALREQUEST2 au pair B
+                        match parsed_node {
-        //
+                            Some(tuple) => {
-        // NATTRAVERSALREQUEST2
+                                let _ =
-        //
+                                    cmd_tx.send(NetworkEvent::FileTreeReceived(tuple.0, tuple.1));
-        // envoie OK à S puis envoie un ping à S
+                            }
-
+                            None => {}
-        // PING
+                        }
-        //
+                    }
-        // envoie un OK
+                    _ => {}
-        //
+                },
-        // OK
+                None => {}
-        //
+            }
-        // si NATTRAVERSALREQUEST alors
+        }
-        //
-        // ERROR
-        //
-        // affiche un msg d'erreur
-        //
-        // HELLO
-        //
-        // envoie une hello reply
-        //
-        // HELLOREPLY
-        //
-        // envoie un root request
-        //
-        // ROOTREQUEST
-        //
-        // envoie un root reply
-        //
-        // ROOTREPLY
-        //
-        // envoie un datum request
-        //
-        // DATUMREQUEST
-        //
-        // envoie le datum
-        //
-        // NODATUM
-        //
-        // affiche un msg d'erreur
-        //
-        // DATUM
-        //
-        // parcourt le directory recu ou le big directory et renvoie une DATUMREQUEST pour chaque
-        // directory ou big directory lu
-        //
-        // NATTRAVERSALREQUEST
-        //
-        // repond OK et envoie un NATTRAVERSALREQUEST2 au pair B
-        //
-        // NATTRAVERSALREQUEST2
-        //
-        // envoie OK à S puis envoie un ping à S
         _ => return None,
     };
     constructed_message

client-network/src/messages_channels.rs

@@ -1,9 +1,15 @@
+use crossbeam_channel::Receiver;
+use tokio::sync::oneshot;
+use tokio::time::sleep;
+
 use crate::P2PSharedData;
-use crate::cryptographic_signature::CryptographicSignature;
 use crate::message_handling::EventType;
 use crate::message_handling::handle_recevied_message;
 use crate::peers_refresh::HandshakeHistory;
-use std::collections::HashMap;
+use crate::threads_handling::Worker;
+use std::clone;
+use std::collections::{HashMap, HashSet};
+use std::hash::Hash;
 use std::net::SocketAddr;
 use std::net::UdpSocket;
 use std::sync::{Arc, Mutex};
@@ -12,15 +18,12 @@ use std::sync::mpsc::{self, Sender};
 use std::thread;
 
 use std::collections::VecDeque;
+use std::time::SystemTime;
+use std::time::UNIX_EPOCH;
 use std::time::{Duration, Instant};
 
 use crate::NetworkEvent;
 
-pub struct MultipleSenders {
-    senders: Vec<Sender<Message>>,
-    response_channel: crossbeam_channel::Sender<NetworkEvent>,
-}
-
 pub struct Message {
     pub payload: Vec<u8>,
     pub address: String,
@@ -30,175 +33,77 @@ pub struct Message {
 struct RetryMessage {
     msg: Message,
     attempts: u8,
-    next_try: Instant,
+    next_try: u64,
+}
+
+pub struct MultipleSenders {
+    sender: crossbeam_channel::Sender<Message>,
+    receiver: crossbeam_channel::Receiver<Message>,
+    response_channel: crossbeam_channel::Sender<NetworkEvent>,
+    retry_queue: Arc<Mutex<VecDeque<RetryMessage>>>,
+    completed_messages: HashSet<i32>,
 }
 
 impl MultipleSenders {
-    /*pub fn new(num_channels: usize, socket: &Arc<UdpSocket>) -> Self {
-        let mut senders = Vec::new();
-
-        // Wrap the socket in an Arc so it can be shared across threads
-
-        for i in 0..num_channels {
-            let (tx, rx) = mpsc::channel::<Message>();
-
-            // Clone the Arc (this just bumps the reference count, it doesn't copy the socket)
-            let sock_clone = Arc::clone(&socket);
-
-            senders.push(tx);
-
-            thread::spawn(move || {
-                println!("Canal d'envoi {} prêt", i);
-
-                for msg in rx {
-                    // Use the cloned Arc inside the thread
-                    if let Err(e) = sock_clone.send_to(&msg.payload, &msg.address) {
-                        eprintln!(
-                            "Erreur d'envoi sur canal {}: {}, address: {}",
-                            i, e, &msg.address
-                        );
-                    } else {
-                        let message_id: [u8; 4] = msg.payload[0..4].try_into().expect("size error");
-                        let id = i32::from_be_bytes(message_id);
-                        let message_type = msg.payload[4];
-                        println!(
-                            "Message {0} de type {1} envoyé à {2} par le canal {3}",
-                            id, message_type, msg.address, i
-                        );
-                    }
-                }
-            });
-        }
-
-        MultipleSenders { senders }
-    }*/
-
     pub fn new(
         num_channels: usize,
         socket: &Arc<UdpSocket>,
         cmd_tx: crossbeam_channel::Sender<NetworkEvent>,
+        threads: &mut Vec<Worker>,
     ) -> Self {
-        let mut senders = Vec::new();
+        let (tx1, rx1) = crossbeam_channel::unbounded();
 
         for i in 0..num_channels {
-            let (tx, rx) = mpsc::channel::<Message>();
             let sock_clone = Arc::clone(&socket);
             let cmd_tx_clone = cmd_tx.clone();
+            let rx: Receiver<Message> = rx1.clone();
 
-            senders.push(tx);
+            let thread = thread::spawn(move || {
-
-            thread::spawn(move || {
                 println!("Canal d'envoi {} prêt", i);
 
-                let mut queue: VecDeque<RetryMessage> = VecDeque::new();
-                let max_attempts = 5;
-
                 loop {
                     // Priorité aux messages en attente prêts à être réessayés
-                    if let Some(front) = queue.front() {
-                        if front.next_try <= Instant::now() {
-                            // On prend le message de la queue
-                            let mut item = queue.pop_front().unwrap();
-                            match sock_clone.send_to(&item.msg.payload, &item.msg.address) {
-                                Ok(_) => {
-                                    if (&item).msg.is_resp_to_server_handshake {
-                                        let res =
-                                            cmd_tx_clone.send(NetworkEvent::ConnectedHandshake());
-                                    }
-                                    let message_id: [u8; 4] =
-                                        item.msg.payload[0..4].try_into().expect("size error");
-                                    let id = i32::from_be_bytes(message_id);
-                                    let message_type = item.msg.payload[4];
-                                    println!(
-                                        "Message {0} de type {1} envoyé à {2} par le canal {3} (retry {4})",
-                                        id, message_type, item.msg.address, i, item.attempts
-                                    );
-                                }
-                                Err(e) => {
-                                    item.attempts += 1;
-                                    if item.attempts >= max_attempts {
-                                        let str = format!(
-                                            "Abandon du message après {} tentatives sur canal {}: {}, address: {}",
-                                            item.attempts, i, e, item.msg.address
-                                        );
-                                        if (&item).msg.is_resp_to_server_handshake {
-                                            let res = cmd_tx_clone
-                                                .send(NetworkEvent::ServerHandshakeFailed(str));
-                                        }
-                                    } else {
-                                        // Backoff exponentiel simple
-                                        let backoff = Duration::from_millis(
-                                            2000u64.saturating_pow(item.attempts as u32),
-                                        );
-                                        item.next_try = Instant::now() + backoff;
-                                        eprintln!(
-                                            "Erreur d'envoi sur canal {}: {}, reprogrammation dans {:?}, tentative {}",
-                                            i, e, backoff, item.attempts
-                                        );
-                                        queue.push_front(item); // remettre en tête pour réessayer plus tôt
-                                    }
-                                }
-                            }
-                            continue;
-                        }
-                    }
-
                     // Si aucun retry prêt, on bloque sur rx avec timeout court, pour pouvoir traiter les timers
-                    match rx.recv_timeout(Duration::from_millis(200)) {
+                    let msg = rx.recv().unwrap();
-                        Ok(msg) => {
+                    match sock_clone.send_to(&msg.payload, &msg.address) {
-                            // On tente d'envoyer immédiatement
+                        Ok(_) => {
-                            match sock_clone.send_to(&msg.payload, &msg.address) {
+                            if msg.is_resp_to_server_handshake {
-                                Ok(_) => {
+                                let res = cmd_tx_clone.send(NetworkEvent::ConnectedHandshake());
-                                    if msg.is_resp_to_server_handshake {
-                                        let res =
-                                            cmd_tx_clone.send(NetworkEvent::ConnectedHandshake());
-                                    }
-                                    let message_id: [u8; 4] =
-                                        msg.payload[0..4].try_into().expect("size error");
-                                    let id = i32::from_be_bytes(message_id);
-                                    let message_type = msg.payload[4];
-                                    println!(
-                                        "Message {0} de type {1} envoyé à {2} par le canal {3}",
-                                        id, message_type, msg.address, i
-                                    );
-                                }
-                                Err(e) => {
-                                    eprintln!(
-                                        "Erreur d'envoi initial sur canal {}: {}, address: {} -- mise en queue pour retry",
-                                        i, e, &msg.address
-                                    );
-                                    let retry = RetryMessage {
-                                        msg,
-                                        attempts: 1,
-                                        next_try: Instant::now() + Duration::from_millis(100),
-                                    };
-                                    queue.push_back(retry);
-                                }
                             }
-                        }
+                            let message_id: [u8; 4] =
-                        Err(mpsc::RecvTimeoutError::Timeout) => {
+                                msg.payload[0..4].try_into().expect("size error");
-                            // Permet de vérifier la queue à nouveau
+                            let id = i32::from_be_bytes(message_id);
-                            continue;
+                            let message_type = msg.payload[4];
-                        }
+                            println!(
-                        Err(mpsc::RecvTimeoutError::Disconnected) => {
+                                "Message {0} de type {1} envoyé à {2} par le canal {3}",
-                            // Le sender a été fermé ; vider la queue et sortir
+                                id, message_type, msg.address, i
-                            eprintln!(
+                            );
-                                "Sender fermé pour le canal {}, fermeture du thread d'envoi",
+                        }
-                                i
+                        Err(e) => {
+                            eprintln!(
+                                "Erreur d'envoi initial sur canal {}: {}, address: {}",
+                                i, e, &msg.address
                             );
-                            break;
                         }
                     }
                 }
             });
+
+            threads.push(Worker::spawn(
+                thread,
+                crate::threads_handling::WorkerType::MSGSENDER,
+            ));
         }
 
         MultipleSenders {
-            senders,
+            sender: tx1,
+            receiver: rx1,
             response_channel: cmd_tx.clone(),
+            retry_queue: Arc::new(Mutex::new(VecDeque::new())),
+            completed_messages: HashSet::new(),
         }
     }
-
+    /*
     /// Envoie un message via un canal spécifique (round-robin ou index précis)
     pub fn send_via(
         &self,
@@ -226,55 +131,147 @@ impl MultipleSenders {
             let id = i32::from_be_bytes(message_id);
             guard.insert(id, EventType::SendRootRequest);
         }
+    }*/
+
+    pub fn send_dispatch(
+        &self,
+        data: Vec<u8>,
+        remote_addr: String,
+        is_resp_to_server_handshake: bool,
+        messages_list: Arc<Mutex<HashMap<i32, EventType>>>,
+    ) {
+        let msg_to_send = Message {
+            payload: data.clone(),
+            address: remote_addr,
+            is_resp_to_server_handshake,
+        };
+        let _ = self.sender.send(msg_to_send);
+        println!("message sent");
     }
 
-    /*pub fn start_receving_thread(
+    pub fn add_message_to_retry_queue(
-        socket: &Arc<UdpSocket>,
+        &self,
-        messages_list: &Arc<HashMap<i32, EventType>>,
+        data: Vec<u8>,
-        crypto_pair: &Arc<CryptographicSignature>,
+        remote_addr: String,
-        socket_addr: SocketAddr,
+        is_resp_to_server_handshake: bool,
-        senders: &Arc<MultipleSenders>,
     ) {
-        let sock_clone = Arc::clone(socket);
+        let msg_to_send = Message {
-        let cryptopair_clone = Arc::clone(crypto_pair);
+            payload: data.clone(),
-        let senders_clone = Arc::clone(senders);
+            address: remote_addr,
+            is_resp_to_server_handshake,
+        };
+        let base: u64 = 2;
+        let attempts = 1;
+        let backoff = base.saturating_pow(attempts); // 2^1 == 2 seconds
+        let newretry = RetryMessage {
+            next_try: SystemTime::now()
+                .duration_since(UNIX_EPOCH)
+                .expect("clock")
+                .as_secs()
+                + backoff,
+            msg: msg_to_send,
+            attempts: attempts as u8,
+        };
 
-        let messages_clone = Arc::clone(messages_list);
+        let mut guard = self.retry_queue.lock().unwrap();
-        thread::spawn(move || {
+        guard.push_back(newretry);
-            let mut buf = [0u8; 1024];
+    }
+}
 
-            loop {
+pub fn start_retry_thread(
-                match sock_clone.recv_from(&mut buf) {
+    senders: Arc<MultipleSenders>,
-                    Ok((amt, src)) => {
+    max_attempts: u8,
-                        handle_recevied_message(
+    messages_list: Arc<Mutex<HashMap<i32, EventType>>>,
-                            &messages_clone,
+    threads: &mut Vec<Worker>,
-                            &buf.to_vec(),
+) {
-                            &cryptopair_clone,
+    let thread = thread::spawn(move || {
-                            &socket_addr,
+        loop {
-                            &senders_clone,
+            thread::sleep(Duration::from_millis(100));
-                        );
+            let mut q = senders.retry_queue.lock().unwrap();
-                        println!("Reçu {} octets de {}: {:?}", amt, src, &buf[..amt]);
+            //println!("size of retry thread: {}", q.len());
+            if let Some(front) = q.pop_front() {
+                // on verifie si le message a recu une reponse
+                let message_id: [u8; 4] = front.msg.payload[0..4].try_into().expect("size error");
+                let id = i32::from_be_bytes(message_id);
+
+                let message_type = front.msg.payload[4];
+                let guard = messages_list.lock().unwrap();
+
+                if guard.contains_key(&id) {
+                    drop(guard);
+                    // si le message est n'a pas encore a etre traité, on le
+                    // remet en queue de liste
+                    if front.next_try
+                        <= SystemTime::now()
+                            .duration_since(UNIX_EPOCH)
+                            .expect("clock")
+                            .as_secs()
+                    {
+                        let attempt = front.attempts + 1;
+                        if attempt >= max_attempts {
+                            let str = format!(
+                                "Abandon du message {} de type {} après {} tentatives, address: {}",
+                                id, message_type, front.attempts, front.msg.address
+                            );
+                            println!("{}", str);
+                            if front.msg.is_resp_to_server_handshake {
+                                let res = senders
+                                    .response_channel
+                                    .send(NetworkEvent::ServerHandshakeFailed(str));
+                            }
+                        } else {
+                            let str = format!(
+                                "Reemission du message {} de type {}, {} tentatives, address: {}",
+                                id, message_type, front.attempts, front.msg.address
+                            );
+                            println!("{}", str);
+
+                            senders.send_dispatch(
+                                front.msg.payload.clone(),
+                                front.msg.address.clone(),
+                                front.msg.is_resp_to_server_handshake,
+                                messages_list.clone(),
+                            );
+                            let base: u64 = 2;
+
+                            let backoff = base.saturating_pow(attempt as u32); // 2^1 == 2 seconds
+                            let newretry = RetryMessage {
+                                next_try: SystemTime::now()
+                                    .duration_since(UNIX_EPOCH)
+                                    .expect("clock")
+                                    .as_secs()
+                                    + backoff,
+                                msg: front.msg,
+                                attempts: attempt,
+                            };
+
+                            q.push_back(newretry); // remettre en tête pour réessayer plus tôt
+                        }
+                    } else {
+                        q.push_back(front); // remettre en tête pour réessayer plus tôt
                     }
-                    Err(e) => eprintln!("Erreur de réception: {}", e),
                 }
             }
-        });
+        }
-    }*/
+    });
+    threads.push(Worker::spawn(
+        thread,
+        crate::threads_handling::WorkerType::MSGRETRY,
+    ));
 }
 
 pub fn start_receving_thread(
-    shared_data: &P2PSharedData,
+    shared_data: &mut P2PSharedData,
     cmd_tx: crossbeam_channel::Sender<NetworkEvent>,
-    handshake_history: &Arc<Mutex<HandshakeHistory>>,
+    handshake_history: Arc<HandshakeHistory>,
 ) {
     let sock_clone = shared_data.socket();
     let cryptopair_clone = shared_data.cryptopair();
     let senders_clone = shared_data.senders();
     let messages_clone = shared_data.messages_list();
+    let messages_received_clone = shared_data.messages_received();
     let servername_clone = shared_data.servername();
-
+    let thread = thread::spawn(move || {
-    let handshake_clone = handshake_history.clone();
-    thread::spawn(move || {
         let mut buf = [0u8; 1024];
         loop {
             match sock_clone.recv_from(&mut buf) {
@@ -284,17 +281,22 @@ pub fn start_receving_thread(
                     println!("Reçu {} octets de {}: {:?}", amt, src, received_data);
                     handle_recevied_message(
                         &messages_clone,
+                        &messages_received_clone,
                         &received_data,
                         &cryptopair_clone,
                         &senders_clone,
                         &servername_clone,
                         cmd_tx.clone(),
                         src,
-                        &handshake_clone,
+                        handshake_history.clone(),
                     );
                 }
                 Err(e) => eprintln!("Erreur de réception: {}", e),
             }
         }
     });
+    shared_data.threads.push(Worker::spawn(
+        thread,
+        crate::threads_handling::WorkerType::MSGRECEPTION,
+    ));
 }

client-network/src/messages_structure.rs

@@ -48,18 +48,23 @@ pub fn construct_message(
             return Some(message);
         }
         ERROR | DATUMREQUEST => {
-            message.extend_from_slice(&payload.len().to_be_bytes());
+            let a = payload.len() as u16;
+            println!("payload size:{}", a);
+            message.extend_from_slice(&a.to_be_bytes());
             message.extend_from_slice(&payload);
             return Some(message);
         }
         ROOTREPLY | NODATUM | DATUM | NATTRAVERSALREQUEST => {
             println!("payload:{:?}", &payload);
-            message.extend_from_slice(&(payload.len() as u16).to_be_bytes());
+            let a = payload.len() as u16;
+            println!("payload size:{}", a);
+            message.extend_from_slice(&a.to_be_bytes());
             message.extend_from_slice(&payload);
             println!("payload:{:?}", &message);
             let signature = sign_message(crypto_pair, &message);
             message.extend_from_slice(&signature);
-            return Some(message);
+            println!("message_to_send_len:{}", &message.len());
+            return Some(signature);
         }
 
         _ => {}

client-network/src/peers_refresh.rs

@@ -1,17 +1,22 @@
 // this class consists of a thread that will re send  pings every time the first element
 // of the stack is at the correct unix time
 
+pub use crate::message_handling::*;
+
 use std::{
     collections::{HashMap, VecDeque},
     net::{AddrParseError, Ipv4Addr, SocketAddr},
     ops::Add,
     process::Command,
     sync::{Arc, Mutex},
-    thread,
+    thread::{self, JoinHandle},
     time::{self, Duration, SystemTime},
 };
 
-use crate::NetworkEvent;
+use crate::{
+    NetworkEvent, cryptographic_signature::CryptographicSignature,
+    messages_channels::MultipleSenders, threads_handling::Worker,
+};
 use crate::{
     P2PSharedData, construct_message, generate_id, messages_structure,
     registration::perform_handshake,
@@ -26,63 +31,35 @@ pub struct PeerInfo {
     pub ip: SocketAddr,
 }
 
+#[derive(Debug, Clone)]
 pub struct HandshakeHistory {
-    //time_k_ip_v: HashMap<u64, u64>,
+    pub username_k_peerinfo_v: Arc<Mutex<HashMap<String, PeerInfo>>>,
-    username_k_peerinfo_v: HashMap<String, PeerInfo>,
+    ip_k_peerinfo_v: Arc<Mutex<HashMap<String, PeerInfo>>>,
-    ip_k_peerinfo_v: HashMap<String, PeerInfo>,
 }
 
 impl HandshakeHistory {
     pub fn new() -> HandshakeHistory {
         HandshakeHistory {
-            //time_k_ip_v: HashMap::new(),
+            username_k_peerinfo_v: Arc::new(Mutex::new(HashMap::new())),
-            //ip_k_peerinfo_v: HashMap::new(),
+            ip_k_peerinfo_v: Arc::new(Mutex::new(HashMap::new())),
-            username_k_peerinfo_v: HashMap::new(),
-            ip_k_peerinfo_v: HashMap::new(),
         }
     }
 
-    /*pub fn update_handshake(&self) {
+    pub fn get_peer_info_username(&self, username: String) -> Option<PeerInfo> {
-        let hashmap_shared = Arc::new(self.username_k_peerinfo_v);
+        //self.username_k_peerinfo_v.get(&username).clone()
-        thread::spawn(move || {
-            let selfhashmap = hashmap_shared.clone();
-            loop {
-                for peer in selfhashmap.keys() {
-                    let peer_ip = selfhashmap.get(peer);
-                    // send ping
-                }
-                let mut child = Command::new("sleep").arg("10").spawn().unwrap();
-                let _result = child.wait().unwrap();
-            }
-        });
-    }*/
 
-    pub fn get_peer_info_username(&self, username: String) -> Option<&PeerInfo> {
+        let guard = self.username_k_peerinfo_v.lock().unwrap();
-        self.username_k_peerinfo_v.get(&username).clone()
+
+        guard.get(&username).cloned()
     }
 
-    pub fn get_peer_info_ip(&self, ip: String) -> Option<&PeerInfo> {
+    pub fn get_peer_info_ip(&self, ip: String) -> Option<PeerInfo> {
-        self.ip_k_peerinfo_v.get(&ip).clone()
+        let guard = self.ip_k_peerinfo_v.lock().unwrap();
+
+        guard.get(&ip).cloned()
     }
 
-    pub fn update_handshake(&self) {
+    pub fn update_peer_info(&self, ip: String, username: String) {
-        // clone the map so we own it (cheap if PeerInfo is Clone)
-        let map_clone: Arc<HashMap<String, PeerInfo>> =
-            Arc::new(self.username_k_peerinfo_v.clone());
-        //let map_ip_clone: Arc<HashMap<String, PeerInfo>> = Arc::new(self.ip_k_peerinfo_v.clone());
-        let map_for_thread = Arc::clone(&map_clone);
-        thread::spawn(move || {
-            loop {
-                // Arc<HashMap<..>> derefs to &HashMap so these reads work
-                for (peer, peerinfo) in map_for_thread.iter() {
-                    // send ping to peerinfo
-                }
-                thread::sleep(Duration::from_secs(10));
-            }
-        });
-    }
-
-    pub fn update_peer_info(&mut self, ip: String, username: String) {
         let peerinfo = self.get_peer_info_ip(ip.clone());
         match peerinfo {
             Some(peer_info) => match ip.parse::<SocketAddr>() {
@@ -92,8 +69,18 @@ impl HandshakeHistory {
                         pubkey: peer_info.pubkey,
                         ip: addr,
                     };
-                    self.ip_k_peerinfo_v.insert(ip, new_peer_info.clone());
+                    let mut guardb = self.ip_k_peerinfo_v.lock().unwrap();
-                    self.username_k_peerinfo_v.insert(username, new_peer_info);
+                    guardb.insert(ip.to_string(), new_peer_info.clone());
+                    let mut guard = self.username_k_peerinfo_v.lock().unwrap();
+
+                    guard.insert(username.to_string(), new_peer_info);
+
+                    println!(
+                        "handshake added: {}, {}, {}",
+                        username.to_string(),
+                        ip.to_string(),
+                        guard.len(),
+                    );
                 }
                 Err(e) => eprintln!("parse error: {}", e),
             },
@@ -103,43 +90,57 @@ impl HandshakeHistory {
         }
     }
 
-    pub fn add_new_handshake(&mut self, hash: VerifyingKey, username: String, ip: SocketAddr) {
+    pub fn get_username_peerinfo_map(&self) -> Arc<Mutex<HashMap<String, PeerInfo>>> {
+        self.username_k_peerinfo_v.clone()
+    }
+
+    pub fn add_new_handshake(&self, hash: VerifyingKey, username: String, ip: SocketAddr) {
         let peerinfo = PeerInfo {
             username: username.clone(),
             pubkey: hash,
             ip,
         };
-        self.username_k_peerinfo_v
+        let mut guard = self.username_k_peerinfo_v.lock().unwrap();
-            .insert(username, peerinfo.clone());
+        guard.insert(username, peerinfo.clone());
-        self.ip_k_peerinfo_v
+        let mut guardb = self.ip_k_peerinfo_v.lock().unwrap();
-            .insert(ip.to_string(), peerinfo.clone());
+        guardb.insert(ip.to_string(), peerinfo.clone());
     }
 }
 
-pub fn perform_discover(
+pub fn update_handshake(
-    username: String,
+    senders: Arc<MultipleSenders>,
-    hash: String,
+    crypto_pair: Arc<CryptographicSignature>,
-    sd: &P2PSharedData,
+    messages_list: Arc<Mutex<HashMap<i32, EventType>>>,
-    server_ip: String,
+    username_k_peerinfo_v: Arc<Mutex<HashMap<String, PeerInfo>>>,
-    event_tx: Sender<NetworkEvent>,
+) -> Worker {
-) {
+    let map_for_thread = username_k_peerinfo_v.clone();
-    // first, sends handshake
+    let handle = thread::spawn(move || {
-    if hash == "root" {
+        loop {
-        perform_handshake(sd, username, server_ip, event_tx, false);
+            let guard = map_for_thread.lock().unwrap();
-        /*if let Some(data) = construct_message(
+            for (peer, peerinfo) in guard.iter() {
-            messages_structure::ROOTREQUEST,
+                let id = generate_id();
-            Vec::new(),
+                let mut map = messages_list.lock().unwrap();
-            generate_id(),
+                map.insert(id, EventType::Ping);
-            sd.cryptopair_ref(),
+                let pingrequest = construct_message(PING, Vec::new(), id, &crypto_pair);
-        ) {
+                if let Some(ping) = pingrequest {
-            if let Some(peerinfo) = sd.handshake_ref() {
+                    senders.add_message_to_retry_queue(
-                sd.senders_ref()
+                        ping.clone(),
-                    .send_via(0, data, peerinfo.ip.to_string(), false);
+                        peerinfo.ip.to_string(),
+                        false,
+                    );
+                    senders.send_dispatch(
+                        ping,
+                        peerinfo.ip.to_string(),
+                        false,
+                        messages_list.clone(),
+                    );
+                }
             }
-        }*/
+            drop(guard);
-    } else {
+            thread::sleep(Duration::from_secs(240));
-        // envoyer un datum request
+        }
-    }
+    });
+    Worker::spawn(handle, crate::threads_handling::WorkerType::PING)
 }
 
 #[cfg(test)]

client-network/src/registration.rs

@@ -1,19 +1,14 @@
-use bytes::Bytes;
-
 use crate::NetworkEvent;
 use crate::P2PSharedData;
-use crate::cryptographic_signature::{CryptographicSignature, formatPubKey, sign_message};
+use crate::cryptographic_signature::CryptographicSignature;
-use crate::get_socket_address;
+use crate::get_server_address;
 use crate::message_handling::EventType;
-use crate::messages_channels::MultipleSenders;
 use crate::messages_structure::construct_message;
 use crate::server_communication::generate_id;
-use crossbeam_channel::{Receiver, Sender};
+use crossbeam_channel::Sender;
-use std::collections::HashMap;
 use std::net::SocketAddr;
-use std::net::UdpSocket;
 use std::str::FromStr;
-use std::sync::{Arc, Mutex};
+use std::sync::Arc;
 
 ///
 /// sends the cryptographic signature to the server using a PUT request over the HTTP API.
@@ -29,8 +24,13 @@ pub async fn register_with_the_server(
     let pubkey_bytes_minus = pubkey_bytes[1..].to_vec();
     let res = client.put(uri).body(pubkey_bytes_minus).send().await?;
     let res = res.error_for_status()?;
-    println!("register ip adresses");
+    match res.error_for_status() {
-    Ok(())
+        Ok(_) => {
+            println!("register ip adresses");
+            Ok(())
+        }
+        Err(e) => Err(e),
+    }
 }
 
 pub fn parse_addresses(input: &String) -> Vec<SocketAddr> {
@@ -60,25 +60,31 @@ pub async fn perform_handshake(
     println!("username: {}, ip: {}", username.clone(), ip.clone());
     let crypto_pair = sd.cryptopair_ref();
     let senders = sd.senders_ref();
-    let messages_list = sd.messages_list_ref();
+
     let id = generate_id();
-    let server_addr_query = get_socket_address(username.clone(), ip.clone());
+    let server_addr_query = get_server_address(username.clone(), ip.clone());
     match server_addr_query.await {
         Some(sockaddr_bytes) => {
             sd.set_servername(username);
+            sd.set_serveraddress(sockaddr_bytes.to_string());
             // first: &SocketAddr
             let mut payload = Vec::new();
             payload.extend_from_slice(&0u32.to_be_bytes());
             payload.extend_from_slice(&crypto_pair.username.clone().as_bytes());
             let hello_handshake = construct_message(1, payload, id, crypto_pair);
+            if is_server_handshake {
+                sd.add_message(id, EventType::Hello);
+            } else {
+                sd.add_message(id, EventType::HelloThenRootRequest);
+            }
+
             match hello_handshake {
                 Some(handshake_message) => {
-                    senders.send_via(
+                    senders.send_dispatch(
-                        0,
                         handshake_message,
                         sockaddr_bytes.to_string(),
                         is_server_handshake,
-                        messages_list,
+                        sd.messages_list(),
                     );
                 }
                 None => {}
@@ -110,8 +116,6 @@ pub async fn perform_handshake(
 
 #[cfg(test)]
 mod tests {
-    // Note this useful idiom: importing names from outer (for mod tests) scope.
-    use super::*;
 
     /*///
     /// does the procedure to register with the server

client-network/src/threads_handling.rs

@@ -0,0 +1,35 @@
+use std::sync::{
+    Arc,
+    atomic::{AtomicBool, Ordering},
+};
+use std::thread::JoinHandle;
+
+pub enum WorkerType {
+    MSGRECEPTION,
+    MSGSENDER,
+    PING,
+    MSGRETRY,
+}
+
+pub struct Worker {
+    thread: Option<JoinHandle<()>>,
+    stop: Arc<AtomicBool>,
+    workertype: WorkerType,
+}
+
+impl Worker {
+    pub fn spawn(thread: JoinHandle<()>, workertype: WorkerType) -> Self {
+        Worker {
+            stop: Arc::new(AtomicBool::new(false)),
+            thread: Some(thread),
+            workertype,
+        }
+    }
+
+    pub fn stop(mut self) {
+        self.stop.store(true, Ordering::Relaxed);
+        if let Some(h) = self.thread.take() {
+            let _ = h.join();
+        }
+    }
+}

client-network/src/timestamp.rs

@@ -0,0 +1,46 @@
+use std::time::{SystemTime, UNIX_EPOCH};
+
+#[derive(Debug, Clone, Copy, PartialEq, Eq)]
+pub struct Timestamp {
+    secs: u64, // seconds since UNIX epoch
+}
+
+unsafe impl Send for Timestamp {}
+
+impl Timestamp {
+    // Create a Timestamp from current system time
+    pub fn now() -> Self {
+        let dur = SystemTime::now()
+            .duration_since(UNIX_EPOCH)
+            .expect("system time before UNIX_EPOCH");
+        Self {
+            secs: dur.as_secs(),
+        }
+    }
+
+    // Create from explicit fields (optional helper)
+    pub fn from_secs(secs: u64) -> Self {
+        Self { secs }
+    }
+
+    // Return underlying seconds
+    pub fn as_secs(&self) -> u64 {
+        self.secs
+    }
+
+    // Return elapsed seconds between `self` and `other`.
+    // Panics if `other` is in the future relative to `self`.
+    // If you call `Timestamp::now().diff(past)`, it returns seconds since `past`.
+    pub fn diff(&self, earlier: &Timestamp) -> u64 {
+        assert!(earlier.secs <= self.secs, "given time is in the future");
+        self.secs - earlier.secs
+    }
+
+    pub fn to_string(&self) -> String {
+        let secs_of_day = self.secs % 86_400;
+        let hh = secs_of_day / 3600;
+        let mm = (secs_of_day % 3600) / 60;
+        let ss = secs_of_day % 60;
+        format!("{:02}:{:02}:{:02}", hh, mm, ss)
+    }
+}

todo.md

@@ -1,58 +1,25 @@
 # Todo
 
-## peer discovery
+## bugfix
 
-## handshake
+- ajouter hello et nat a l'exp backoff OK
+- peers n'ayant pas d'adresse OK
+- verifier le refresh des peers
 
-# Todo
-
-## peer discovery
-
-- get rsquest to the uri /peers/
-
-## registration with the server
-
-- generation of the cryptographic key OK
-- put request to the uri (check if the peer is already connected) OK
-- udp handshakes OK
-- get request to the uri /peers/key to get the public key of a peer OK
-- get request to the uri /peers/key/addresses OK
-
-## handshake
-
-- handshake structure OK
-
-- 5min timeout after handshake
-- matain connection every 4 min
-
-## data transfer
-
-- request structure
-- root/root reply structure
-- datum/nodatum and datum structures
-- nattraversal 1 and 2 structures
 - setting in gui to act as a relay
-- chunk, directory, big, bigdirectory structures
-
-## fonctionnalités application
-
-## nat traversal
 
 - make hello and helloreply messages set the first extension bit to announce that peer is available for nat traversal
 - implement actual nat traversal requests
 - implement nat traversal :
-  - if hello/helloreply doesnt work with a peer, find a peer that supports nat traversal (server in priority) then begin protocol
+    - if hello/helloreply doesnt work with a peer, find a peer that supports nat traversal (server in priority) then begin protocol
 
-fonctionnalités :
+## fonctionnalités :
 
 rechercher les fichiers d'un pair
 telechargement des fichiers
 choisir un dossier à partager
 choisir le nombre de canaux
 
-handshake server DOING
-se deconnecter du réseau DOING
-
 ## autre
 
 socket ipv6
@@ -71,3 +38,9 @@ socket ipv6
 - generer une clé publique OK
 - verifier signature OK
 - 2 channels -> un pour envoyer et un pour recevoir OK
+- get rsquest to the uri /peers/ OK
+- request structure
+- root/root reply structure
+- datum/nodatum and datum structures
+- nattraversal 1 and 2 structures
+- chunk, directory, big, bigdirectory structures