progress bar

.gitignore

@@ -1 +1,2 @@
 /target
+target/

client-gui/src/gui_app.rs

@@ -1,14 +1,18 @@
 use client_network::{
-    ChunkNode, MerkleNode, MerkleTree, NetworkCommand, NetworkEvent, NodeHash, filename_to_string,
+    ChunkNode, MerkleNode, MerkleTree, NetworkCommand, NetworkEvent, NodeHash,
-    node_hash_to_hex_string,
+    big_or_chunk_to_file, filename_to_string, generate_base_tree, node_hash_to_hex_string,
+    node_to_file, remove_null_bytes,
 };
 use crossbeam_channel::{Receiver, Sender};
 use egui::{
-    Align, Align2, Button, CentralPanel, CollapsingHeader, Color32, Context, CornerRadius, Frame,
+    Align, CentralPanel, CollapsingHeader, Color32, Context, CornerRadius, Frame, Layout,
-    Id, LayerId, Layout, Order, Popup, Response, ScrollArea, SidePanel, Stroke, TextStyle,
+    ProgressBar, Response, ScrollArea, SidePanel, Stroke, TopBottomPanel, Ui, Vec2,
-    TopBottomPanel, Ui, ViewportCommand,
+    ViewportCommand,
 };
-use std::{collections::HashMap, fmt::format};
+use std::collections::HashSet;
+use std::{collections::HashMap, fmt::format, io::Seek};
+
+use std::fs::{File, OpenOptions, create_dir};
 
 enum ServerStatus {
     Loading,
@@ -29,12 +33,14 @@ pub struct P2PClientApp {
     // GUI State
     status_message: String,
     known_peers: Vec<(String, bool)>,
+    loading_peers: Vec<String>,
     connect_address_input: String,
     connected_address: String,
     connect_name_input: String,
 
     // Key: Parent Directory Hash (String), Value: List of children FileNode
     loaded_fs: HashMap<String, MerkleTree>,
+    shared_tree: MerkleTree,
 
     // Current peer tree displayed
     active_peer: Option<String>,
@@ -43,10 +49,20 @@ pub struct P2PClientApp {
 
     show_network_popup: bool, // gérer selon besoin
 
-    error_message: Option<String>, // Some(message) -> afficher, None -> rien
+    error_message: Option<(String, String)>, // Some(message) -> afficher, None -> rien
-    success_message: Option<String>, // Some(message) -> afficher, None -> rien
+    success_message: Option<(String, String)>, // Some(message) -> afficher, None -> rien
-    //
     active_server: String,
+
+    current_downloading_file_map: MerkleTree,
+    remaining_chunks: HashSet<[u8; 32]>,
+
+    // total number of chunks expected for the current download (set when download starts)
+    current_total_chunks: Option<usize>,
+
+    // number of chunks received so far (count of removed remaining_chunks)
+    current_received_chunks: usize,
+
+    root_downloading_file: String,
 }
 
 impl P2PClientApp {
@@ -54,6 +70,7 @@ impl P2PClientApp {
         //let (root_hash, tree_content) = MerkleNode::generate_base_tree();
 
         let mut loaded_fs = HashMap::new();
+        let mut current_downloading_file_map = MerkleTree::new(HashMap::new(), [0; 32]);
         //let tree = MerkleTree::new(tree_content, root_hash);
         //loaded_fs.insert("bob".to_string(), tree);
 
@@ -65,6 +82,7 @@ impl P2PClientApp {
             network_event_rx: event_rx,
             status_message: "Client Initialized. Awaiting network status...".to_string(),
             known_peers: Vec::new(),
+            loading_peers: Vec::new(),
             connect_address_input: "https://jch.irif.fr:8443".to_string(),
             connected_address: "".to_string(),
             loaded_fs,
@@ -75,13 +93,19 @@ impl P2PClientApp {
             success_message: None,
             connect_name_input: "bob".to_string(),
             active_server: "".to_string(),
+            shared_tree: generate_base_tree(),
+            current_downloading_file_map: current_downloading_file_map,
+            current_total_chunks: None,
+            current_received_chunks: 0,
+            root_downloading_file: "".to_string(),
+            remaining_chunks: HashSet::new(),
         }
     }
-    pub fn show_error(&mut self, msg: impl Into<String>) {
+    pub fn show_error(&mut self, msg: impl Into<String>, peer_username: impl Into<String>) {
-        self.error_message = Some(msg.into());
+        self.error_message = Some((msg.into(), peer_username.into()));
     }
-    pub fn show_success(&mut self, msg: impl Into<String>) {
+    pub fn show_success(&mut self, msg: impl Into<String>, peer_username: impl Into<String>) {
-        self.success_message = Some(msg.into());
+        self.success_message = Some((msg.into(), peer_username.into()));
     }
     pub fn clear_error(&mut self) {
         self.error_message = None;
@@ -89,6 +113,14 @@ impl P2PClientApp {
     pub fn clear_success(&mut self) {
         self.success_message = None;
     }
+
+    fn set_current_total_chunks(&mut self, len: Option<usize>) {
+        self.current_total_chunks = len
+    }
+
+    fn set_current_received_chunks(&mut self, arg: usize) {
+        self.current_received_chunks = arg
+    }
 }
 
 // --- eframe::App Trait Implementation ---
@@ -124,13 +156,70 @@ impl eframe::App for P2PClientApp {
                         self.known_peers.push((addr, true));
                     }
                 }
+                NetworkEvent::RootRequest(addr) => {
+                    let root = self.shared_tree.root;
+                    let _ = self
+                        .network_cmd_tx
+                        .send(NetworkCommand::SendRootReply(root.to_vec(), addr));
+                }
+                NetworkEvent::DatumRequest(node_hash, addr) => {
+                    let hash: NodeHash = node_hash.try_into().expect("incorrect size");
+                    let asked_datum = self.shared_tree.data.get(&hash);
+                    match asked_datum {
+                        Some(datum_found) => {
+                            let _ = self.network_cmd_tx.send(NetworkCommand::SendDatum(
+                                datum_found.clone(),
+                                node_hash,
+                                addr,
+                            ));
+                        }
+                        None => {
+                            let _ = self
+                                .network_cmd_tx
+                                .send(NetworkCommand::SendNoDatum(node_hash.to_vec(), addr));
+                        }
+                    }
+                }
                 NetworkEvent::PeerListUpdated(peers) => {
                     //todo!();
 
                     self.known_peers = peers;
                 }
-                NetworkEvent::FileTreeReceived(node_hash, merklenode) => {
+
-                    //self.status_message = "🔄 File tree updated successfully.".to_string();
+                NetworkEvent::FileTreeReceived(node_hash, merklenode, ip) => {
+                    match &self.active_peer {
+                        Some(active_peer) => {
+                            if let Some(maptree) = self.loaded_fs.get_mut(active_peer) {
+                                maptree.data.insert(node_hash, merklenode.clone());
+                                match merklenode {
+                                    MerkleNode::Directory(d) => {
+                                        for entry in d.entries {
+                                            let _ = self.network_cmd_tx.send(
+                                                NetworkCommand::GetChildren(
+                                                    entry.content_hash,
+                                                    ip.clone(),
+                                                    false,
+                                                ),
+                                            );
+                                        }
+                                    }
+                                    MerkleNode::BigDirectory(bigd) => {
+                                        for entry in bigd.children_hashes {
+                                            let _ = self.network_cmd_tx.send(
+                                                NetworkCommand::GetChildren(
+                                                    entry,
+                                                    ip.clone(),
+                                                    false,
+                                                ),
+                                            );
+                                        }
+                                    }
+                                    _ => {}
+                                }
+                            }
+                        }
+                        None => {}
+                    }
                 }
                 NetworkEvent::FileTreeRootReceived(peer_id, root_hash) => {
                     // todo!();
@@ -142,8 +231,10 @@ impl eframe::App for P2PClientApp {
                     );*/
 
                     if let Ok(chunknode) = ChunkNode::new(Vec::new()) {
-                        let mut data_map: HashMap<NodeHash, MerkleNode> = HashMap::new();
+                        let data_map: HashMap<NodeHash, MerkleNode> = HashMap::new();
-                        data_map.insert(root_hash, MerkleNode::Chunk(chunknode));
+                        //data_map.insert(root_hash, MerkleNode::Chunk(chunknode));
+                        println!("len root: {}", data_map.len());
+                        println!("node hash: {:?}", root_hash.to_vec());
                         let tree = MerkleTree {
                             data: data_map,
                             root: root_hash,
@@ -181,19 +272,98 @@ impl eframe::App for P2PClientApp {
                     self.known_peers.clear();
                     self.server_status = ServerStatus::NotConnected;
                 }
-                NetworkEvent::Error(err) => {
+                NetworkEvent::Error(err, peer_username) => {
-                    self.show_error(err);
+                    self.loading_peers.retain(|s| s != peer_username.as_str());
+                    self.show_error(err, peer_username);
                 }
-                NetworkEvent::Success(msg) => {
+                NetworkEvent::InitDownload(hash, ip, name) => {
-                    self.show_success(msg);
+                    if let Some(addr) = &self.active_peer {
+                        if let Some(roottree) = self.loaded_fs.get(addr) {
+                            if let Some(root) = roottree.data.get(&hash) {
+                                self.root_downloading_file = name;
+                                let _ = self
+                                    .current_downloading_file_map
+                                    .data
+                                    .insert(hash, root.clone());
+                                let _ = self
+                                    .network_cmd_tx
+                                    .send(NetworkCommand::GetChildren(hash, ip, true));
+                            }
+                        }
+                    }
+                }
+                NetworkEvent::DataReceived(hash, merkle_node, ip) => {
+                    let _ = self
+                        .current_downloading_file_map
+                        .data
+                        .insert(hash, merkle_node.clone());
+
+                    println!("merkle:{}", merkle_node.get_type_byte());
+                    match merkle_node {
+                        MerkleNode::Big(bigfile) => {
+                            for entry in bigfile.children_hashes {
+                                println!("entry: {:?}", entry);
+                                let _ = self.network_cmd_tx.send(NetworkCommand::GetChildren(
+                                    entry,
+                                    ip.clone(),
+                                    true,
+                                ));
+                                self.remaining_chunks.insert(entry);
+                                self.set_current_total_chunks(Some(self.remaining_chunks.len()));
+                            }
+                            self.remaining_chunks.remove(&hash);
+                        }
+                        MerkleNode::Chunk(chunk) => {
+                            self.remaining_chunks.remove(&hash);
+                        }
+                        _ => {}
+                    }
+
+                    if let Some(total) = self.current_total_chunks {
+                        // recompute received (safer than incrementing)
+                        let received = total.saturating_sub(self.remaining_chunks.len());
+                        self.current_received_chunks = received;
+                    }
+
+                    if self.remaining_chunks.is_empty() {
+                        /*let file = OpenOptions::new()
+                            .append(true)
+                            .create(true)
+                            .open(self.root_downloading_file.clone());
+
+                        if let Some(current) = self
+                            .current_downloading_file_map
+                            .data
+                            .get(&self.current_downloading_file_map.root)
+                        {
+                            match file {
+                                Ok(mut fileok) => {
+                                    big_or_chunk_to_file(
+                                        &self.current_downloading_file_map,
+                                        current,
+                                        &mut fileok,
+                                    );
+                                }
+                                Err(e) => {
+                                    eprintln!("error creaation file: {}", e);
+                                }
+                            }
+                        }*/
+                        self.current_total_chunks = None;
+                        self.current_received_chunks = 0;
+                        println!("bigfile téléchargé");
+                    }
+                }
+                NetworkEvent::Success(msg, peer_username) => {
+                    self.loading_peers.retain(|s| s != peer_username.as_str());
+                    self.show_success(msg, peer_username);
                 }
-                NetworkEvent::DataReceived(_, merkle_node) => todo!(),
                 NetworkEvent::HandshakeFailed() => {}
                 NetworkEvent::ServerHandshakeFailed(err) => {
                     self.active_server = "".to_string();
                     self.server_status = ServerStatus::NotConnected;
                     let err_msg = format!("Failed to connect to the server: {}", err);
-                    self.show_error(err_msg);
+                    self.show_error(err_msg, "");
                     let res = self.network_cmd_tx.send(NetworkCommand::ResetServerPeer());
                 }
             }
@@ -254,90 +424,42 @@ impl eframe::App for P2PClientApp {
                         }
                         _ => {}
                     }
-
-                    /* ui.horizontal(|ui| {
-                        ui.label("Server peer name:");
-                        ui.text_edit_singleline(&mut self.connect_server_name_input);
-                        if ui.button("Connect").clicked() {
-                            let addr = self.connect_address_input.clone();
-                            let serv_name = self.connect_server_name_input.clone();
-                            let _ = self
-                                .network_cmd_tx
-                                .send(NetworkCommand::ConnectToServer(addr, serv_name));
-                            self.server_status = ServerStatus::Loading;
-                            ui.close();
-                        }
-                    });*/
                 });
-
-                // état
-
-                /*if ui.button("Network").clicked() {
-                    self.show_network_popup = true;
-                }*/
-
-                /*if self.show_network_popup {
-                    egui::Window::new("Network")
-                        .collapsible(false)
-                        .resizable(false)
-                        .show(ctx, |ui| {
-                            ui.horizontal_wrapped(|ui| {
-                                ui.with_layout(
-                                    egui::Layout::right_to_left(egui::Align::TOP),
-                                    |ui| {
-                                        if ui.button("✕").clicked() {
-                                            self.show_network_popup = false;
-                                        }
-                                    },
-                                );
-                            });
-                            ui.horizontal(|ui| {
-                                ui.label("Server IP:");
-                                ui.text_edit_singleline(&mut self.connect_address_input);
-                            });
-                            ui.horizontal(|ui| {
-                                ui.label("Server peer name:");
-                                ui.text_edit_singleline(&mut self.connect_server_name_input);
-                                if ui.button("Connect").clicked() {
-                                    // envoyer commande...
-                                    let addr = self.connect_address_input.clone();
-                                    let serv_name = self.connect_server_name_input.clone();
-                                    let _ = self
-                                        .network_cmd_tx
-                                        .send(NetworkCommand::ConnectToServer(addr, serv_name));
-                                    self.server_status = ServerStatus::Loading;
-
-                                    self.show_network_popup = false;
-                                }
-                            });
-                        });
-                }*/
             });
         });
 
         TopBottomPanel::bottom("bottom_panel").show(ctx, |ui| {
             ui.horizontal(|ui| {
                 match self.server_status {
-                    ServerStatus::Loading => {
+                    ServerStatus::Loading => ui.spinner(),
-                        ui.spinner();
+                    ServerStatus::Connected => ui.label("Registered but no server peer chosen..."),
-                    }
+                    ServerStatus::NotConnected => ui.label("No connection.."),
-                    ServerStatus::Connected => {
+                    ServerStatus::ConnectedHandshake => ui.label("📡"),
-                        ui.label("Registered but no server peer chosen...");
+                };
-                    }
+
-                    ServerStatus::NotConnected => {
+                ui.add_space(8.0); // small gap
-                        ui.label("No connection..");
+
-                    }
+                // desired progress bar width
-                    ServerStatus::ConnectedHandshake => {
+                let bar_width = 220.0f32;
-                        let str = format!("📡");
+                // push it to the right by adding space equal to remaining width minus bar width
-                        ui.label(str);
+                let push = (ui.available_width() - bar_width).max(0.0);
-                    }
+                ui.add_space(push);
+
+                if let Some(total) = self.current_total_chunks {
+                    let received = self.current_received_chunks;
+                    let frac = if total == 0 {
+                        1.0
+                    } else {
+                        received as f32 / total as f32
+                    };
+
+                    ui.add(
+                        ProgressBar::new(frac)
+                            .show_percentage()
+                            .animate(true)
+                            .desired_height(10.0),
+                    );
                 }
-                ui.add_space(ui.available_width() - 30.0);
-                // formater mm:ss
-                let secs = self.remaining.as_secs();
-                let minutes = secs / 60;
-                let seconds = secs % 60;
-                ui.label(format!("{:02}:{:02}", minutes, seconds));
             });
         });
 
@@ -359,101 +481,234 @@ impl eframe::App for P2PClientApp {
                                 error.to_string()
                             );
                         }
+                        if let Some(active_peer) = &self.active_peer {
+                            if let Some(tree) = self.loaded_fs.get(active_peer) {
+                                println!("{}", tree.data.len());
+                            }
+                        }
                     }
                 });
 
                 ui.separator();
-                ScrollArea::vertical().show(ui, |ui| {
+                ScrollArea::vertical()
-                    if self.known_peers.is_empty() {
+                    .auto_shrink([false; 2])
-                        ui.add_space(10.0);
+                    .show(ui, |ui| {
-                        ui.label("No active peers.");
+                        ui.style_mut().visuals.widgets.inactive.bg_fill =
-                    } else {
+                            ui.style().visuals.widgets.inactive.bg_fill; // no-op to get mutable borrow
-                        for peer in &self.known_peers {
+                        if self.known_peers.is_empty() {
-                            let is_active =
+                            ui.add_space(10.0);
-                                self.active_peer.as_ref().map_or(false, |id| id == &peer.0); // if peer.id == self.active_peer_id
+                            ui.label("No active peers.");
+                        } else {
+                            for peer in &self.known_peers {
+                                let is_active =
+                                    self.active_peer.as_ref().map_or(false, |id| id == &peer.0); // if peer.id == self.active_peer_id
 
-                            let selectable: Response;
+                                let selectable: Response;
-                            if &self.active_server == &peer.0 {
+                                // if &self.active_server == &peer.0 {
-                                // Create a frame with green background and render the selectable inside it.
+                                //     // Create a frame with green background and render the selectable inside it.
-                                // Adjust rounding, padding and stroke as desired.
+                                //     // Adjust rounding, padding and stroke as desired.
-                                let frame = Frame {
+                                //     let frame = Frame {
-                                    fill: Color32::DARK_BLUE,
+                                //         fill: Color32::DARK_BLUE,
-                                    stroke: Stroke::default(),
+                                //         stroke: Stroke::default(),
-                                    corner_radius: CornerRadius::from(0.5),
+                                //         corner_radius: CornerRadius::from(0.5),
-                                    ..Default::default()
+                                //         ..Default::default()
-                                };
+                                //     };
-                                let internal = frame.show(ui, |ui| {
+                                //     let internal = frame.show(ui, |ui| {
-                                    ui.selectable_label(is_active, format!("{}", peer.0))
+                                //         // horizontal row: label on the left, spinner on the right
-                                });
+                                //         ui.horizontal(|ui| {
-                                selectable = internal.response;
+                                //             // let selectable label take remaining space
-                            } else {
+                                //             ui.with_layout(Layout::left_to_right(Align::Center), |ui| {
-                                selectable = ui.selectable_label(is_active, format!("{}", peer.0));
+                                //                 ui.add_space(0.0); // ensure layout established
-                            }
+                                //                 return ui.selectable_label(
+                                //                     is_active,
+                                //                     format!("{}", peer.0),
+                                //                 );
+                                //             })
+                                //             .inner // return Response from the inner closure if your egui version does so
+                                //         })
+                                //     });
+                                //     selectable = internal.inner.inner;
+                                // } else {
+                                //     selectable = ui.selectable_label(is_active, format!("{}", peer.0));
+                                // }
 
-                            if selectable.clicked() {
+                                // place spinner to the right of the label
-                                // switch to displaying this peer's tree
+                                ui.horizontal(|ui| {
-                                self.active_peer = Some(peer.0.clone());
+                                    // Use same width for the label widget as the selectable we already created:
-                                // Request root content if not loaded
+                                    // Recreate selectable inline so both label and spinner share the same row.
-                                if !self
+                                    let resp = if &self.active_server == &peer.0 {
-                                    .loaded_fs
+                                        // draw with frame inline
-                                    .contains_key(self.active_peer.as_ref().unwrap())
+                                        let frame = Frame {
-                                {
+                                            fill: Color32::DARK_BLUE,
-                                    //todo!();
+                                            stroke: Stroke::default(),
-                                    let _ = self.network_cmd_tx.send(NetworkCommand::Discover(
+                                            corner_radius: CornerRadius::from(0.5),
-                                        peer.0.clone(),
+                                            ..Default::default()
-                                        "root".to_string(),
+                                        };
-                                        self.connected_address.clone(),
+                                        frame
-                                    ));
+                                            .show(ui, |ui| {
-                                }
+                                                ui.selectable_label(
-                            }
+                                                    is_active,
-                            selectable.context_menu(|ui| {
+                                                    format!("{}", peer.0),
-                                // ... action
+                                                )
-                                match self.server_status {
+                                            })
-                                    ServerStatus::Connected => {
+                                            .inner
-                                        if ui
+                                    } else {
-                                            .button("Utiliser le peer en tant que serveur")
+                                        ui.selectable_label(is_active, format!("{}", peer.0))
-                                            .clicked()
+                                    };
+
+                                    ui.add_space(4.0); // small gap
+
+                                    if self.loading_peers.contains(&peer.0) {
+                                        // push spinner to right by expanding a spacer before it
+                                        ui.with_layout(
+                                            Layout::right_to_left(Align::Center),
+                                            |ui| {
+                                                ui.spinner();
+                                            },
+                                        );
+                                    }
+
+                                    // use resp (click handling etc.)
+                                    if resp.clicked() {
+                                        // switch to displaying this peer's tree
+                                        self.active_peer = Some(peer.0.clone());
+                                        // Request root content if not loaded
+                                        if !self
+                                            .loaded_fs
+                                            .contains_key(self.active_peer.as_ref().unwrap())
                                         {
-                                            self.active_server = peer.0.to_string();
+                                            //todo!();
-                                            let res = self.network_cmd_tx.send(
+                                            let _ =
-                                                NetworkCommand::ServerHandshake(
+                                                self.network_cmd_tx.send(NetworkCommand::Discover(
-                                                    peer.0.to_string(),
+                                                    peer.0.clone(),
+                                                    "root".to_string(),
                                                     self.connected_address.clone(),
-                                                ),
+                                                ));
-                                            );
                                         }
                                     }
-                                    _ => {}
+                                    resp.context_menu(|ui| {
-                                }
+                                    // ... action
-                                if ui.button("Send Ping").clicked() {
+                                    match self.server_status {
-                                    let res = self.network_cmd_tx.send(NetworkCommand::Ping(
+                                        ServerStatus::Connected => {
-                                        peer.0.to_string(),
+                                            if ui
-                                        self.connected_address.clone(),
+                                                .button("Utiliser le peer en tant que serveur")
-                                    ));
+                                                .clicked()
-                                }
+                                            {
-                                if ui.button("Send Nat Traversal Request").clicked() {
+                                                self.active_server = peer.0.to_string();
-                                    match self.network_cmd_tx.send(NetworkCommand::NatTraversal(
+                                                let res = self.network_cmd_tx.send(
-                                        peer.0.to_string(),
+                                                    NetworkCommand::ServerHandshake(
-                                        self.connected_address.clone(),
+                                                        peer.0.to_string(),
-                                    )) {
+                                                        self.connected_address.clone(),
-                                        Ok(_) => {
+                                                    ),
-                                            print!("[+] successfully sent nat traversal request")
+                                                );
-                                        }
+                                            }
-                                        Err(_) => {
-                                            print!("[-] failed to send nat traversal request")
                                         }
+                                        _ => {}
                                     }
-                                }
+                                    if ui.button("Send Ping").clicked() {
-                                if ui.button("Infos").clicked() {
+                                        let res = self.network_cmd_tx.send(NetworkCommand::Ping(
-                                    // action 3
+                                            peer.0.to_string(),
-                                    ui.close();
+                                            self.connected_address.clone(),
-                                }
+                                        ));
 
-                                // ... autres boutons
+                                        self.loading_peers.push(peer.0.to_owned());
-                            });
+                                    }
+                                    if ui.button("Send Nat Traversal Request").clicked() {
+                                        match self.network_cmd_tx.send(
+                                            NetworkCommand::NatTraversal(
+                                                peer.0.to_string(),
+                                                self.connected_address.clone(),
+                                            ),
+                                        ) {
+                                            Ok(_) => {
+                                                print!(
+                                                    "[+] successfully sent nat traversal request"
+                                                )
+                                            }
+                                            Err(_) => {
+                                                print!("[-] failed to send nat traversal request")
+                                            }
+                                        }
+                                    }
+                                    if ui.button("Infos").clicked() {
+                                        // action 3
+                                        ui.close();
+                                    }
+
+                                    // ... autres boutons
+                                });
+                                });
+
+                                // if self.loading_peers.contains(&peer.0) {
+                                //     ui.spinner();
+                                // }
+
+                                //if selectable.clicked() {
+                                // switch to displaying this peer's tree
+                                //self.active_peer = Some(peer.0.clone());
+                                //// Request root content if not loaded
+                                //if !self
+                                //    .loaded_fs
+                                //    .contains_key(self.active_peer.as_ref().unwrap())
+                                //{
+                                //    //todo!();
+                                //    let _ = self.network_cmd_tx.send(NetworkCommand::Discover(
+                                //        peer.0.clone(),
+                                //        "root".to_string(),
+                                //        self.connected_address.clone(),
+                                //    ));
+                                //}
+                                //}
+                                //selectable.context_menu(|ui| {
+                                //    // ... action
+                                //    match self.server_status {
+                                //        ServerStatus::Connected => {
+                                //            if ui
+                                //                .button("Utiliser le peer en tant que serveur")
+                                //                .clicked()
+                                //            {
+                                //                self.active_server = peer.0.to_string();
+                                //                let res = self.network_cmd_tx.send(
+                                //                    NetworkCommand::ServerHandshake(
+                                //                        peer.0.to_string(),
+                                //                        self.connected_address.clone(),
+                                //                    ),
+                                //                );
+                                //            }
+                                //        }
+                                //        _ => {}
+                                //    }
+                                //    if ui.button("Send Ping").clicked() {
+                                //        let res = self.network_cmd_tx.send(NetworkCommand::Ping(
+                                //            peer.0.to_string(),
+                                //            self.connected_address.clone(),
+                                //        ));
+
+                                //        self.loading_peers.push(peer.0.to_owned());
+                                //    }
+                                //    if ui.button("Send Nat Traversal Request").clicked() {
+                                //        match self.network_cmd_tx.send(NetworkCommand::NatTraversal(
+                                //            peer.0.to_string(),
+                                //            self.connected_address.clone(),
+                                //        )) {
+                                //            Ok(_) => {
+                                //                print!("[+] successfully sent nat traversal request")
+                                //            }
+                                //            Err(_) => {
+                                //                print!("[-] failed to send nat traversal request")
+                                //            }
+                                //        }
+                                //    }
+                                //    if ui.button("Infos").clicked() {
+                                //        // action 3
+                                //        ui.close();
+                                //    }
+
+                                //    // ... autres boutons
+                                //});
+                            }
                         }
-                    }
+                    });
-                });
             });
 
         CentralPanel::default().show(ctx, |ui| {
@@ -467,13 +722,17 @@ impl eframe::App for P2PClientApp {
             ui.separator();
 
             if let Some(active_peer) = &self.active_peer {
-                if let Some(tree) = self.loaded_fs.get(active_peer) {
+                if let Some(tree) = self.loaded_fs.clone().get(active_peer) {
                     ScrollArea::vertical().show(ui, |ui| {
                         // Start drawing the tree from the root hash
                         self.draw_file_tree(ui, tree);
                     });
                 } else {
-                    ui.label(format!("Loading root for peer: {}", active_peer));
+                    ui.horizontal(|ui| {
+                        ui.label(format!("Loading root for peer: {}", active_peer));
+                        ui.add_space(8.0);
+                        ui.spinner(); // or conditional: if is_loading { ui.spinner(); }
+                    });
                 }
             } else {
                 ui.label("Connect to a peer to view a file tree.");
@@ -492,7 +751,8 @@ impl eframe::App for P2PClientApp {
                 .resizable(false)
                 .anchor(egui::Align2::CENTER_CENTER, [0.0, 0.0])
                 .show(ctx, |ui| {
-                    ui.label(&msg);
+                    ui.label(&msg.1);
+                    ui.label(&msg.0);
                     if ui.button("OK").clicked() {
                         self.clear_error();
                     }
@@ -506,7 +766,8 @@ impl eframe::App for P2PClientApp {
                 .resizable(false)
                 .anchor(egui::Align2::CENTER_CENTER, [0.0, 0.0])
                 .show(ctx, |ui| {
-                    ui.label(&msg);
+                    ui.label(&msg.1);
+                    ui.label(&msg.0);
                     if ui.button("OK").clicked() {
                         self.clear_success();
                     }
@@ -521,7 +782,7 @@ impl eframe::App for P2PClientApp {
 // --- Helper for Drawing the Recursive File Tree ---
 
 impl P2PClientApp {
-    fn draw_file_tree(&self, ui: &mut Ui, tree: &MerkleTree) {
+    fn draw_file_tree(&mut self, ui: &mut Ui, tree: &MerkleTree) {
         assert!(self.active_peer.is_some());
         assert!(
             self.loaded_fs
@@ -538,7 +799,7 @@ impl P2PClientApp {
     }
 
     fn draw_file_node(
-        &self,
+        &mut self,
         ui: &mut Ui,
         to_draw: NodeHash,
         tree: &MerkleTree,
@@ -551,11 +812,12 @@ impl P2PClientApp {
         if let Some(current) = tree.data.get(&to_draw) {
             let name = {
                 if filename.is_some() {
-                    filename_to_string(filename.unwrap())
+                    String::from_utf8(filename.unwrap().to_vec()).expect("err")
                 } else {
                     node_hash_to_hex_string(&to_draw)
                 }
             };
+
             match current {
                 MerkleNode::Chunk(node) => {
                     if ui
@@ -563,11 +825,30 @@ impl P2PClientApp {
                         .on_hover_text("Click to request file chunks...")
                         .clicked()
                     {
-                        todo!();
+                        match create_dir("./Download/") {
+                            Ok(_) => println!("Directory created successfully!"),
+                            Err(e) => println!("Failed to create directory: {}", e),
+                        }
+
+                        let new_name = format!("./Download/{}", name);
+
+                        let sani = remove_null_bytes(&new_name);
+
+                        println!("sani:{}", sani);
+
+                        let mut file = OpenOptions::new()
+                            .append(true)
+                            .create(true)
+                            .open(sani)
+                            .unwrap();
+
+                        big_or_chunk_to_file(tree, &MerkleNode::Chunk(node.clone()), &mut file);
+
                         // if let Some(peer_id) = active_peer_id.clone() {
                         //     let _ = self.network_cmd_tx.send(NetworkCommand::RequestChunk(peer_id, entry_hash.clone()));
                         //     // self.status_message = format!("Requested file chunks for: {}...", &entry_hash[..8]);
                         // }
+                        //  todo!();
                     }
                 }
                 MerkleNode::Directory(node) => {
@@ -581,26 +862,29 @@ impl P2PClientApp {
                                     entry.content_hash,
                                     tree,
                                     depth + 1,
-                                    Some(
+                                    Some(entry.filename.try_into().expect("incorrect size")),
-                                        entry
-                                            .filename
-                                            .as_slice()
-                                            .try_into()
-                                            .expect("incorrect size"),
-                                    ),
                                 );
                             }
                         });
                 }
                 MerkleNode::Big(node) => {
-                    CollapsingHeader::new(format!("📄 (B) {}", name))
+                    if ui
-                        .default_open(false)
+                        .selectable_label(false, format!("📄 (B) {}", name))
-                        .enabled(true)
+                        .on_hover_text("Click to request file chunks...")
-                        .show(ui, |ui| {
+                        .clicked()
-                            for child in &node.children_hashes {
+                    {
-                                self.draw_file_node(ui, child.clone(), tree, depth + 1, None);
+                        if let Some(name) = filename {
+                            if let Ok(nameb) = String::from_utf8(name.to_vec()) {
+                                if let Some(addr) = &self.active_peer {
+                                    let _ = self.network_cmd_tx.send(NetworkCommand::InitDownload(
+                                        to_draw,
+                                        addr.clone(),
+                                        nameb,
+                                    ));
+                                }
                             }
-                        });
+                        }
+                    }
                 }
                 MerkleNode::BigDirectory(node) => {
                     CollapsingHeader::new(format!("📁 (BD) {}", name))

client-network/src/cryptographic_signature.rs

@@ -134,7 +134,7 @@ pub fn sign_message(crypto_pair: &CryptographicSignature, message: &Vec<u8>) ->
 #[cfg(test)]
 mod tests {
     use super::*;
-
+    /*
     ///
     /// creates a cryptographic signature
     ///
@@ -144,7 +144,7 @@ mod tests {
         let crypto_pair = CryptographicSignature::new(username);
         let formatted_pubkey = formatPubKey(crypto_pair);
         println!("pubkey : {}", formatted_pubkey);
-    }
+    }*/
 
     /*#[test]
     fn signing_message() {

client-network/src/data.rs

@@ -1,7 +1,15 @@
 use rand::{Rng, rng};
+use sha2::{Digest, Sha256};
 use std::collections::HashMap;
 use std::hash::{DefaultHasher, Hash, Hasher};
 
+use std::fs::{File, OpenOptions, create_dir};
+use std::io::{self, Write};
+
+use std::env;
+
+use crate::data;
+
 // --- Constants ---
 pub const MAX_CHUNK_DATA_SIZE: usize = 1024;
 pub const MAX_DIRECTORY_ENTRIES: usize = 16;
@@ -24,9 +32,9 @@ pub enum MerkleNode {
     // 0 to 16 directory entries.
     Directory(DirectoryNode) = 1,
     // list of 2 to 32 hashes pointing to Chunk or Big nodes.
-    Big(BigNode) = 3,
+    Big(BigNode) = 2,
     // list of 2 to 32 hashes pointing to Directory or BigDirectory nodes.
-    BigDirectory(BigDirectoryNode) = 4,
+    BigDirectory(BigDirectoryNode) = 3,
 }
 
 #[derive(Debug, Clone)]
@@ -39,6 +47,9 @@ impl MerkleTree {
     pub fn new(data: HashMap<NodeHash, MerkleNode>, root: NodeHash) -> MerkleTree {
         MerkleTree { data, root }
     }
+    pub fn clear_data(&mut self) {
+        self.data.clear();
+    }
 }
 
 #[derive(Debug, Clone)]
@@ -143,8 +154,8 @@ impl MerkleNode {
         match self {
             MerkleNode::Chunk(_) => 0,
             MerkleNode::Directory(_) => 1,
-            MerkleNode::Big(_) => 3,
+            MerkleNode::Big(_) => 2,
-            MerkleNode::BigDirectory(_) => 4,
+            MerkleNode::BigDirectory(_) => 3,
         }
     }
 
@@ -176,3 +187,336 @@ impl MerkleNode {
         bytes
     }
 }
+
+fn hash(data: &[u8]) -> NodeHash {
+    let root_hash = Sha256::digest(&data);
+    println!("root hash: {:?}", root_hash);
+    let res: NodeHash = root_hash.try_into().expect("incorrect size");
+    res
+    /*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() -> MerkleTree {
+    let mut res = HashMap::new();
+
+    let bob_content = "where is bob".to_string().into_bytes();
+    let alice_content = "alice".to_string().into_bytes();
+    let oscar_content = "oscar is the opponent".to_string().into_bytes();
+
+    let mut children_nodes = Vec::new();
+    for i in 0..10 {
+        let mut i_nodes = Vec::new();
+        for j in 0..10 {
+            let node1 = MerkleNode::Chunk(ChunkNode::new(bob_content.clone()).unwrap());
+            let hash = hash(&node1.serialize());
+            i_nodes.push(hash);
+            res.insert(hash, node1);
+        }
+        let bignode = MerkleNode::Big(BigNode::new(i_nodes).unwrap());
+        let hashbig = hash(&bignode.serialize());
+        children_nodes.push(hashbig);
+        res.insert(hashbig, bignode);
+    }
+
+    let bignode = MerkleNode::Big(BigNode::new(children_nodes).unwrap());
+    let hashbig = hash(&bignode.serialize());
+
+    let node1 = MerkleNode::Chunk(ChunkNode::new(bob_content).unwrap());
+    let hash1 = hash(&node1.serialize());
+
+    let node2 = MerkleNode::Chunk(ChunkNode::new(alice_content).unwrap());
+    let hash2 = hash(&node2.serialize());
+
+    //res.insert(hash1, node1);
+    //res.insert(hash2, node2);
+    res.insert(hashbig, bignode);
+
+    let node3 = MerkleNode::Chunk(ChunkNode::new(oscar_content).unwrap());
+    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: hashbig,
+            },
+            /*DirectoryEntry {
+                filename: generate_random_filename(),
+                content_hash: hash2,
+            },
+            DirectoryEntry {
+                filename: generate_random_filename(),
+                content_hash: hash_dir1,
+            },*/
+        ]
+        .to_vec(),
+    });
+
+    let root_hash = Sha256::digest(&root.serialize());
+    println!("root hash: {:?}", root_hash);
+    res.insert(root_hash.try_into().expect("incorrect size"), root);
+
+    MerkleTree::new(res, root_hash.try_into().expect("incorrect size"))
+}
+
+pub fn node_to_file(tree: &MerkleTree, node: &MerkleNode, path: String, i: u8) {
+    match node.clone() {
+        MerkleNode::Directory(dir) => {
+            if i != 0 {
+                let new_path = format!("{}/fold_{}", path.clone(), i);
+                match create_dir(new_path.clone()) {
+                    Ok(_) => println!("Directory created successfully!"),
+                    Err(e) => println!("Failed to create directory: {}", e),
+                }
+            }
+            for entry in dir.entries {
+                // creer un fichier pour chaque entry
+                if let Ok(filename_str) = String::from_utf8(entry.filename.to_vec()) {
+                    let new_name = format!("{}{}", path.clone(), remove_null_bytes(&filename_str));
+
+                    println!("new_name: {}", new_name);
+                    let file = OpenOptions::new()
+                        .append(true)
+                        .create(true)
+                        .open(new_name.clone());
+                    match file {
+                        Ok(mut fileok) => {
+                            if let Some(current) = tree.data.get(&entry.content_hash) {
+                                big_or_chunk_to_file(&tree, &current, &mut fileok);
+                            }
+                        }
+                        Err(e) => {
+                            eprintln!("error creaation file: {}", e);
+                        }
+                    }
+                }
+            }
+        }
+        MerkleNode::BigDirectory(bigdir) => {
+            for entry in bigdir.children_hashes.iter() {
+                if let Some(current) = tree.data.get(entry) {
+                    node_to_file(tree, current, path.clone(), i + 1);
+                }
+            }
+        }
+        _ => {
+            eprintln!("invalid type of dir");
+        }
+    }
+}
+
+pub fn remove_null_bytes(input: &str) -> String {
+    input.chars().filter(|&c| c != '\0').collect()
+}
+
+pub fn big_or_chunk_to_file(tree: &MerkleTree, node: &MerkleNode, file: &mut File) {
+    match node {
+        MerkleNode::Big(big) => {
+            for entry in big.children_hashes.iter() {
+                if let Some(current) = tree.data.get(entry) {
+                    big_or_chunk_to_file(tree, current, file);
+                }
+            }
+        }
+        MerkleNode::Chunk(chunk) => {
+            println!("wrote data");
+            let _ = file.write_all(&chunk.data);
+        }
+        _ => {
+            println!("invalid type of file");
+        }
+    }
+}
+
+#[cfg(test)]
+mod tests {
+    use super::*;
+
+    ///
+    /// creates a cryptographic signature
+    ///
+    #[test]
+    fn test_saving_tree() {
+        if let Ok(current_dir) = env::current_dir() {
+            println!("Current working directory: {:?}", current_dir);
+        }
+
+        println!("--------- tree test starts ------------");
+
+        match create_dir("../Download/") {
+            Ok(_) => println!("Directory created successfully!"),
+            Err(e) => println!("Failed to create directory: {}", e),
+        }
+        let tree = generate_base_tree();
+
+        println!("--------- test tree created ------------");
+        if let Some(root_node) = tree.data.get(&tree.root) {
+            node_to_file(&tree, root_node, "../Download/".to_string(), 0);
+        }
+    }
+
+    /*#[test]
+    fn signing_message() {
+        let username = String::from("gamixtreize");
+        let crypto_pair = CryptographicSignature::new(username.clone());
+        let handshake = HandshakeMessage::hello(0, 12, username);
+        let ser = handshake.serialize();
+        let signed_message = sign_message(&crypto_pair, &ser);
+        println!("unsigned_message: {:?}", ser);
+        println!("signed_message: {:?}", signed_message);
+    }*/
+}

client-network/src/datum_parsing.rs

@@ -11,9 +11,9 @@ pub fn parse_received_datum(
     datum_length: usize,
 ) -> Option<([u8; 32], MerkleNode)> {
     let hash_name: [u8; 32] = recevied_datum[..32].try_into().expect("error");
-    let sigstart = datum_length - 64;
+    let value = &recevied_datum[32..recevied_datum.len()];
-    let value = &recevied_datum[32..sigstart];
     let value_slice = value.to_vec();
+    println!("valueslice: {:?}, {}", value_slice, value_slice.len());
     let datum_type = value_slice[0];
     match datum_type {
         CHUNK => Some((
@@ -21,14 +21,17 @@ pub fn parse_received_datum(
             MerkleNode::Chunk(crate::ChunkNode { data: value_slice }),
         )),
         DIRECTORY => {
-            let nb_entries = value_slice[1];
             let mut dir_entries = Vec::new();
             let mut offset = 1 as usize;
-            for i in 0..nb_entries {
+            for i in 0..((value_slice.len() - 1) / 64) as u8 {
-                offset = (offset as u8 + 64 * i) as usize;
+                offset = (1 + 64 * i as usize) as usize;
-                let name = &recevied_datum[offset..offset + 32];
+                println!("offset:{}, i:{}", offset, i);
+                let name = &value_slice[offset..offset + 32];
                 let mut hash = [0u8; 32];
-                hash.copy_from_slice(&recevied_datum[offset + 32..offset + 64]);
+                hash.copy_from_slice(&value_slice[offset + 32..offset + 64]);
+                let dp_name = String::from_utf8(name.to_vec()).expect("err");
+                println!("name:{}", dp_name);
+
                 // envoyer un datum request
                 dir_entries.push(DirectoryEntry {
                     filename: name.try_into().expect("incorrect size"),
@@ -46,35 +49,38 @@ pub fn parse_received_datum(
             }
         }
         BIG => {
-            let chlidren: Vec<NodeHash> = Vec::new();
+            let mut bigdir_entries: Vec<NodeHash> = Vec::new();
+            let mut offset = 1 as usize;
+            for i in 0..((value_slice.len() - 1) / 32) as u8 {
+                offset = (1 + 32 * i as usize) as usize;
+                println!("offset:{}, i:{}", offset, i);
+                let hash = &value_slice[offset..offset + 32];
+
+                // envoyer un datum request
+                bigdir_entries.push(hash.try_into().expect("incorrect size"));
+            }
+
+            println!("its a BIG bro");
             Some((
                 hash_name,
                 MerkleNode::Big(crate::BigNode {
-                    children_hashes: chlidren,
+                    children_hashes: bigdir_entries,
                 }),
             ))
-            /*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];
+            let mut bigdir_entries: Vec<NodeHash> = Vec::new();
-            let mut dir_entries = Vec::new();
             let mut offset = 1 as usize;
-            for i in 0..nb_entries {
+            for i in 0..((value_slice.len() - 1) / 32) as u8 {
-                offset = (offset as u8 + 64 * i) as usize;
+                offset = (1 + 32 * i as usize) as usize;
-                let name = &recevied_datum[offset..offset + 32];
+                println!("offset:{}, i:{}", offset, i);
-                let mut hash = [0u8; 32];
+                let hash = &value_slice[offset..offset + 32];
-                hash.copy_from_slice(&recevied_datum[offset + 32..offset + 64]);
+
                 // envoyer un datum request
-                dir_entries.push(hash);
+                bigdir_entries.push(hash.try_into().expect("incorrect size"));
             }
 
-            let current = BigDirectoryNode::new(dir_entries);
+            let current = BigDirectoryNode::new(bigdir_entries);
             match current {
                 Ok(current_node) => Some((hash_name, MerkleNode::BigDirectory(current_node))),
                 Err(e) => {

client-network/src/lib.rs

@@ -13,18 +13,23 @@ mod threads_handling;
 mod timestamp;
 
 use crate::fetchsocketaddresserror::FetchSocketAddressError;
+use crate::messages_structure::ROOTREPLY;
 use crate::peers_refresh::*;
 use crate::timestamp::Timestamp;
 use crate::{
     cryptographic_signature::CryptographicSignature,
     message_handling::EventType,
     messages_channels::{MultipleSenders, start_receving_thread, start_retry_thread},
-    messages_structure::{NATTRAVERSALREQUEST, PING, ROOTREQUEST, construct_message},
+    messages_structure::{
+        DATUM, DATUMREQUEST, NATTRAVERSALREQUEST, NATTRAVERSALREQUEST2, NODATUM, PING, 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::collections::HashSet;
 use std::{
     io::Error,
     net::{IpAddr, Ipv4Addr, UdpSocket},
@@ -176,7 +181,11 @@ pub enum NetworkCommand {
     Disconnect(),
     ResetServerPeer(),
     Discover(String, String, String),
-    GetChildren(String, String),
+    GetChildren([u8; 32], String, bool),
+    SendDatum(MerkleNode, [u8; 32], String),
+    SendNoDatum(Vec<u8>, String),
+    SendRootReply(Vec<u8>, String),
+    InitDownload([u8; 32], String, String),
     // ...
 }
 
@@ -185,15 +194,18 @@ pub enum NetworkEvent {
     Connected(String),
     ConnectedHandshake(),
     Disconnected(),
-    Error(String),
+    Error(String, String),
-    Success(String),
+    Success(String, String),
     PeerConnected(String),
     PeerListUpdated(Vec<(String, bool)>),
-    FileTreeReceived([u8; 32], MerkleNode), // peer_id, content
+    FileTreeReceived([u8; 32], MerkleNode, String), // peer_id, content
-    DataReceived(String, MerkleNode),
+    DataReceived([u8; 32], MerkleNode, String),
     FileTreeRootReceived(String, NodeHash),
     HandshakeFailed(),
     ServerHandshakeFailed(String),
+    DatumRequest([u8; 32], String),
+    RootRequest(String),
+    InitDownload([u8; 32], String, String),
     // ...
 }
 
@@ -234,6 +246,84 @@ pub fn start_p2p_executor(
             // Check for commands from the GUI
             if let Ok(cmd) = cmd_rx.try_recv() {
                 match cmd {
+                    NetworkCommand::InitDownload(hash, ip, name) => {
+                        if let Some(sd) = shared_data.as_ref() {
+                            if let Some(res) = sd.handshake_peers.get_peer_info_username(ip) {
+                                let _ = event_tx.send(NetworkEvent::InitDownload(
+                                    hash,
+                                    res.ip.to_string(),
+                                    name.to_string(),
+                                ));
+                            }
+                        }
+                    }
+                    NetworkCommand::SendRootReply(node_hash, addr) => {
+                        if let Some(sd) = shared_data.as_mut() {
+                            let mut payload = Vec::new();
+                            payload.extend_from_slice(&node_hash);
+                            let new_id = generate_id();
+                            let message =
+                                construct_message(ROOTREPLY, payload, new_id, sd.cryptopair_ref());
+
+                            match message {
+                                None => {}
+                                Some(resp_msg) => {
+                                    println!("msg_sent:{:?}", resp_msg);
+                                    sd.senders_ref().send_dispatch(
+                                        resp_msg,
+                                        addr.clone(),
+                                        false,
+                                        sd.messages_list(),
+                                    );
+                                }
+                            }
+                        }
+                    }
+                    NetworkCommand::SendNoDatum(node_hash, addr) => {
+                        if let Some(sd) = shared_data.as_mut() {
+                            let mut payload = Vec::new();
+                            payload.extend_from_slice(&node_hash);
+                            let new_id = generate_id();
+                            let message =
+                                construct_message(NODATUM, payload, new_id, sd.cryptopair_ref());
+
+                            match message {
+                                None => {}
+                                Some(resp_msg) => {
+                                    println!("msg_sent:{:?}", resp_msg);
+                                    sd.senders_ref().send_dispatch(
+                                        resp_msg,
+                                        addr.clone(),
+                                        false,
+                                        sd.messages_list(),
+                                    );
+                                }
+                            }
+                        }
+                    }
+                    NetworkCommand::SendDatum(merklennode, node_hash, addr) => {
+                        if let Some(sd) = shared_data.as_mut() {
+                            let mut payload = Vec::new();
+                            payload.extend_from_slice(&node_hash);
+                            payload.extend_from_slice(&merklennode.serialize());
+                            let new_id = generate_id();
+                            let message =
+                                construct_message(DATUM, payload, new_id, sd.cryptopair_ref());
+
+                            match message {
+                                None => {}
+                                Some(resp_msg) => {
+                                    println!("msg_sent:{:?}", resp_msg);
+                                    sd.senders_ref().send_dispatch(
+                                        resp_msg,
+                                        addr.clone(),
+                                        false,
+                                        sd.messages_list(),
+                                    );
+                                }
+                            }
+                        }
+                    }
                     NetworkCommand::ServerHandshake(username, ip) => {
                         println!("server handshake called");
                         if let Some(sd) = shared_data.as_mut() {
@@ -250,9 +340,53 @@ pub fn start_p2p_executor(
                                 sd.messages_list(),
                                 sd.handshake_peers.get_username_peerinfo_map(),
                             );
+                            let server_address = {
+                                match get_server_address(username.to_owned(), ip.to_owned()).await {
+                                    Some(addr) => addr.to_string(),
+                                    None => {
+                                        match event_tx.send(NetworkEvent::Error(
+                                            "Couldn't fetch server socket address.".to_owned(),
+                                            username.to_owned(),
+                                        )) {
+                                            Ok(_) => {}
+                                            Err(e) => {
+                                                println!("Network Event Error : {}", e.to_string());
+                                            }
+                                        }
+                                        "".to_owned()
+                                    }
+                                }
+                            };
+                            if server_address.to_owned().eq(&"".to_owned()) {
+                                continue;
+                            }
 
-                            let res =
+                            sd.set_servername(username.to_owned());
-                                perform_handshake(&sd, username, ip, event_tx.clone(), true).await;
+                            sd.set_serveraddress(server_address.to_string());
+                            println!("SET SERVERADDRESS");
+
+                            match perform_handshake(
+                                &sd,
+                                username.to_owned(),
+                                ip,
+                                event_tx.clone(),
+                                (true, server_address.to_string()),
+                            )
+                            .await
+                            {
+                                true => {
+                                    match event_tx.send(NetworkEvent::Success(
+                                        "Handshake established ✔️".to_string(),
+                                        username.to_owned(),
+                                    )) {
+                                        Ok(_) => {}
+                                        Err(err) => {
+                                            println!("Network Event Error : {}", err.to_string());
+                                        }
+                                    };
+                                }
+                                false => {}
+                            };
                         } else {
                             println!("no shared data");
                         }
@@ -270,7 +404,9 @@ 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 = sd.handshake_peers.get_peer_info_username(username.clone());
+                            let res = sd
+                                .handshake_peers
+                                .get_peer_info_username(username.to_owned());
                             match res {
                                 Some(peerinfo) => {
                                     let id = generate_id();
@@ -305,22 +441,72 @@ pub fn start_p2p_executor(
                                 }
                                 None => {
                                     // envoyer un handshake
-                                    let res = perform_handshake(
+                                    match perform_handshake(
                                         &sd,
-                                        username,
+                                        username.to_owned(),
                                         ip,
                                         event_tx.clone(),
-                                        false,
+                                        (false, "".to_string()),
                                     )
-                                    .await;
+                                    .await
+                                    {
+                                        true => {
+                                            match event_tx.send(NetworkEvent::Success(
+                                                "Handshake established ✔️".to_string(),
+                                                username.to_owned(),
+                                            )) {
+                                                Ok(_) => {}
+                                                Err(err) => {
+                                                    println!(
+                                                        "Network Event Error : {}",
+                                                        err.to_string()
+                                                    );
+                                                }
+                                            };
+                                        }
+                                        false => {}
+                                    }
                                 }
                             }
                         } else {
                             println!("no shared data");
                         }
                     }
-                    NetworkCommand::GetChildren(username, hash) => {
+                    NetworkCommand::GetChildren(hash, ip, is_file) => {
-                        // envoie un datum request au peer
+                        if let Some(sd) = shared_data.as_ref() {
+                            let mut payload = Vec::new();
+                            payload.extend_from_slice(&hash);
+                            let new_id = generate_id();
+                            let datumreqest = construct_message(
+                                DATUMREQUEST,
+                                payload,
+                                new_id,
+                                sd.cryptopair_ref(),
+                            );
+                            match datumreqest {
+                                None => {}
+                                Some(resp_msg) => {
+                                    if is_file {
+                                        sd.add_message(new_id, EventType::DatumRequestBig);
+                                    } else {
+                                        sd.add_message(new_id, EventType::DatumRequest);
+                                    }
+                                    println!("msg_sent:{:?}", resp_msg);
+                                    sd.senders_ref().add_message_to_retry_queue(
+                                        resp_msg.clone(),
+                                        ip.clone(),
+                                        false,
+                                    );
+
+                                    sd.senders_ref().send_dispatch(
+                                        resp_msg,
+                                        ip.clone(),
+                                        false,
+                                        sd.messages_list(),
+                                    );
+                                }
+                            }
+                        }
                     }
                     NetworkCommand::RequestDirectoryContent(_, _) => {
                         println!("[Network] RequestDirectoryContent() called");
@@ -338,7 +524,8 @@ pub fn start_p2p_executor(
                             Err(e) => {
                                 let mut err_msg = String::from("failed to initialize socket: ");
                                 err_msg += &e.to_string();
-                                let res = event_tx.send(NetworkEvent::Error(err_msg));
+                                let res =
+                                    event_tx.send(NetworkEvent::Error(err_msg, name.to_owned()));
                                 let res = event_tx.send(NetworkEvent::Disconnected());
                                 None
                             }
@@ -348,7 +535,8 @@ pub fn start_p2p_executor(
                             if let Err(e) = register_with_the_server(&sd.cryptopair(), &ip).await {
                                 let mut err_msg = String::from("request failed: ");
                                 err_msg += &e.to_string();
-                                let res = event_tx.send(NetworkEvent::Error(err_msg));
+                                let res =
+                                    event_tx.send(NetworkEvent::Error(err_msg, name.to_owned()));
                                 let res = event_tx.send(NetworkEvent::Disconnected());
                             } else {
                                 let res = event_tx.send(NetworkEvent::Connected(ip));
@@ -372,6 +560,7 @@ pub fn start_p2p_executor(
                         if ip == "" {
                             let res = event_tx.send(NetworkEvent::Error(
                                 "Not registered to any server".to_string(),
+                                "".to_owned(),
                             ));
                         } else {
                             println!("cc");
@@ -410,7 +599,7 @@ pub fn start_p2p_executor(
                             let pingrequest =
                                 construct_message(PING, Vec::new(), id, sd.cryptopair_ref());
                             let peer_address =
-                                get_socket_address(str, ip, shared_data.as_ref()).await;
+                                get_socket_address(str.to_owned(), ip, shared_data.as_ref()).await;
                             match peer_address {
                                 Ok(addr) => {
                                     //if let Some(ping) = pingrequest {
@@ -426,10 +615,13 @@ pub fn start_p2p_executor(
                                     //        sd.messages_list(),
                                     //    );
                                     //}
-                                    match event_tx.send(NetworkEvent::Success(format!(
+                                    match event_tx.send(NetworkEvent::Success(
-                                        "Successfully sent ping message to {}.",
+                                        format!(
-                                        addr.to_string()
+                                            "Successfully sent ping message to {}.",
-                                    ))) {
+                                            addr.to_string(),
+                                        ),
+                                        str.to_owned(),
+                                    )) {
                                         Ok(_) => {}
                                         Err(e) => {
                                             eprintln!("NetworkEvent error : {}", e);
@@ -437,7 +629,9 @@ pub fn start_p2p_executor(
                                     };
                                 }
                                 Err(err_msg) => {
-                                    match event_tx.send(NetworkEvent::Error(err_msg.to_string())) {
+                                    match event_tx
+                                        .send(NetworkEvent::Error(err_msg.to_string(), str))
+                                    {
                                         Ok(_) => {}
                                         Err(e) => {
                                             eprintln!("NetworkEvent error : {}", e);
@@ -504,7 +698,9 @@ pub fn start_p2p_executor(
                                     );
                                 }
                                 Err(err_msg) => {
-                                    match event_tx.send(NetworkEvent::Error(err_msg.to_string())) {
+                                    match event_tx
+                                        .send(NetworkEvent::Error(err_msg.to_string(), username))
+                                    {
                                         Ok(_) => {}
                                         Err(e) => {
                                             eprintln!("NetworkEvent error : {}", e);
@@ -623,7 +819,16 @@ pub async fn get_socket_address(
         }
     };
 
-    let addresses = parse_addresses(&s); // assumes parse_addresses: &str -> Vec<SocketAddr>
+    let addresses: Vec<SocketAddr> = {
+        let temp = parse_addresses(&s);
+        temp.iter()
+            .filter_map(|a| match a {
+                SocketAddr::V4(_) => Some(*a),
+                SocketAddr::V6(_) => None,
+            })
+            .collect()
+    };
+
     if addresses.is_empty() {
         return Err(FetchSocketAddressError::NoRegisteredAddresses);
     } else if !addresses.iter().any(|a| matches!(a, SocketAddr::V4(_))) {

client-network/src/message_handling.rs

@@ -1,15 +1,10 @@
-use tokio::sync::oneshot;
-
 use crate::{
-    NetworkEvent, NodeHash, P2PSharedData,
+    NetworkEvent, NodeHash,
-    cryptographic_signature::{
+    cryptographic_signature::{CryptographicSignature, get_peer_key, verify_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,
 };
@@ -32,6 +27,7 @@ pub enum EventType {
     Ping,
     NatTraversal,
     DatumRequest,
+    DatumRequestBig,
     Unknown,
 }
 
@@ -45,6 +41,7 @@ impl EventType {
             EventType::NatTraversal => "NatTraversal".to_owned(),
             EventType::DatumRequest => "DatumRequest".to_owned(),
             EventType::Unknown => "Unknown".to_owned(),
+            EventType::DatumRequestBig => "DatumRequestBig".to_owned(),
         }
     }
 
@@ -320,10 +317,10 @@ pub fn parse_message(
                 String::from_utf8(received_message[LENGTH..(msg_length + LENGTH)].to_vec())
             {
                 let err_msg = format!("Error received from peer {} : {}", ip, err_received);
-                let _ = cmd_tx_clone.send(NetworkEvent::Error(err_msg));
+                let _ = cmd_tx_clone.send(NetworkEvent::Error(err_msg, "".to_owned()));
             } else {
                 let err_msg = format!("Error received from peer {} : N/A", ip,);
-                let _ = cmd_tx_clone.send(NetworkEvent::Error(err_msg));
+                let _ = cmd_tx_clone.send(NetworkEvent::Error(err_msg, "".to_owned()));
             }
         }
 
@@ -461,8 +458,35 @@ pub fn parse_message(
                             parse_received_datum(received_datum.to_vec(), received_length as usize);
                         match parsed_node {
                             Some(tuple) => {
-                                let _ =
+                                let _ = cmd_tx.send(NetworkEvent::FileTreeReceived(
-                                    cmd_tx.send(NetworkEvent::FileTreeReceived(tuple.0, tuple.1));
+                                    tuple.0,
+                                    tuple.1,
+                                    ip.to_string(),
+                                ));
+                            }
+                            None => {}
+                        }
+                    }
+                    EventType::DatumRequestBig => {
+                        let _ = &guard.remove_entry(&id);
+                        println!("message {} retiré de la liste", id);
+                        let received_length = u16::from_be_bytes(
+                            received_message[TYPE..LENGTH]
+                                .try_into()
+                                .expect("incorrect size"),
+                        );
+                        println!("received length:{}", received_length);
+                        let received_datum = &received_message[LENGTH..];
+                        let parsed_node =
+                            parse_received_datum(received_datum.to_vec(), received_length as usize);
+                        match parsed_node {
+                            Some(tuple) => {
+                                let _ = cmd_tx.send(NetworkEvent::DataReceived(
+                                    tuple.0,
+                                    tuple.1,
+                                    ip.to_string(),
+                                ));
+                                println!("datareceived event sent");
                             }
                             None => {}
                         }
@@ -472,6 +496,22 @@ pub fn parse_message(
                 None => {}
             }
         }
+        ROOTREQUEST => {
+            println!("root request received");
+            let _ = cmd_tx.send(NetworkEvent::RootRequest(ip.to_string()));
+        }
+        DATUMREQUEST => {
+            let received_length = u16::from_be_bytes(
+                received_message[TYPE..LENGTH]
+                    .try_into()
+                    .expect("incorrect size"),
+            );
+            let received_hash = &received_message[LENGTH..LENGTH + received_length as usize];
+            let _ = cmd_tx.send(NetworkEvent::DatumRequest(
+                received_hash.try_into().expect("incorrect size"),
+                ip.to_string(),
+            ));
+        }
         _ => return None,
     };
     constructed_message

client-network/src/messages_structure.rs

@@ -224,7 +224,7 @@ impl HandshakeMessage {
 mod tests {
     // Note this useful idiom: importing names from outer (for mod tests) scope.
     use super::*;
-
+    /*
     /// creates an handshake message
     #[tokio::test]
     async fn creating_handshake_msg() {
@@ -242,5 +242,5 @@ mod tests {
         let parsed = HandshakeMessage::parse(ser);
         handshake.display();
         parsed.display();
-    }
+    }*/
 }

client-network/src/peers_refresh.rs

@@ -137,7 +137,7 @@ pub fn update_handshake(
                 }
             }
             drop(guard);
-            thread::sleep(Duration::from_secs(240));
+            thread::sleep(Duration::from_secs(60));
         }
     });
     Worker::spawn(handle, crate::threads_handling::WorkerType::PING)

client-network/src/registration.rs

@@ -2,6 +2,7 @@ use crate::NetworkEvent;
 use crate::P2PSharedData;
 use crate::cryptographic_signature::CryptographicSignature;
 use crate::get_server_address;
+use crate::get_socket_address;
 use crate::message_handling::EventType;
 use crate::messages_structure::construct_message;
 use crate::server_communication::generate_id;
@@ -55,47 +56,71 @@ pub async fn perform_handshake(
     username: String,
     ip: String,
     event_tx: Sender<NetworkEvent>,
-    is_server_handshake: bool,
+    is_server_handshake: (bool, String),
-) {
+) -> bool {
     println!("username: {}, ip: {}", username.clone(), ip.clone());
     let crypto_pair = sd.cryptopair_ref();
     let senders = sd.senders_ref();
 
     let id = generate_id();
-    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 {
+    let address = {
-                Some(handshake_message) => {
+        if is_server_handshake.0 {
-                    senders.send_dispatch(
+            is_server_handshake.1
-                        handshake_message,
+        } else {
-                        sockaddr_bytes.to_string(),
+            let server_addr_query =
-                        is_server_handshake,
+                get_socket_address(username.clone(), ip.clone(), Some(sd)).await;
-                        sd.messages_list(),
+
-                    );
+            match server_addr_query {
+                Ok(sockaddr_bytes) => sockaddr_bytes.to_string(),
+                Err(err_msg) => {
+                    match event_tx.send(NetworkEvent::Error(
+                        err_msg.to_string(),
+                        username.to_owned(),
+                    )) {
+                        Ok(_) => {}
+                        Err(err) => {
+                            println!("Network Event Error : {}", err.to_string());
+                        }
+                    }
+                    "".to_string()
                 }
-                None => {}
             }
         }
-        None => {
+    };
-            let err_msg = format!("failed to retreive socket address:").to_string();
+
-            let res = event_tx.send(NetworkEvent::Error(err_msg));
+    if address.eq(&"".to_string()) {
-        }
+        return false;
     }
 
+    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.0 {
+        sd.add_message(id, EventType::Hello);
+    } else {
+        sd.add_message(id, EventType::HelloThenRootRequest);
+    }
+
+    match hello_handshake {
+        Some(handshake_message) => {
+            senders.send_dispatch(
+                handshake_message,
+                address,
+                is_server_handshake.0,
+                sd.messages_list(),
+            );
+        }
+        None => {}
+    }
+
+    //let server_addr_query = get_socket_address(username.clone(), ip.clone(), Some(sd)).await;
+    //match server_addr_query {
+    //    Ok(sockaddr_bytes) => {}
+    //    Err(err_msg) => {}
+    //}
+
     /*let mut list = messages_list.lock().expect("Failed to lock messages_list");
     match list.get(&id) {
         Some(_) => {
@@ -112,6 +137,7 @@ pub async fn perform_handshake(
     let hello_handshake_received = UDPMessage::parse(buf.to_vec());
     hello_handshake_received.display();*/
     //TODO
+    return true;
 }
 
 #[cfg(test)]

todo.md

@@ -1,24 +1,11 @@
 # Todo
 
-## bugfix
-
-- ajouter hello et nat a l'exp backoff OK
-- peers n'ayant pas d'adresse OK
-- verifier le refresh des peers
-
-- setting in gui to act as a relay
-
-- 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
 
 ## fonctionnalités :
-
+- proposer des fichiers
-rechercher les fichiers d'un pair
+- telechargement des fichiers
-telechargement des fichiers
+- receivers threads
-choisir un dossier à partager
+- ask for nat traversal
-choisir le nombre de canaux
 
 ## autre
 
@@ -26,6 +13,7 @@ socket ipv6
 
 # FAIT
 
+rechercher les fichiers d'un pair OK
 - choisir un pseudo OK
 - get rsquest to the uri /peers/ OK
 - generation of the cryptographic key OK
@@ -44,3 +32,6 @@ socket ipv6
 - datum/nodatum and datum structures
 - nattraversal 1 and 2 structures
 - chunk, directory, big, bigdirectory structures
+- ajouter hello et nat a l'exp backoff OK
+- peers n'ayant pas d'adresse OK
+- verifier le refresh des peers OK