v1.1

Cargo.lock

@@ -468,12 +468,48 @@ version = "2.3.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "37909eebbb50d72f9059c3b6d82c0463f2ff062c9e95845c43a6c9c0355411be"
 
+[[package]]
+name = "futures"
+version = "0.3.31"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "65bc07b1a8bc7c85c5f2e110c476c7389b4554ba72af57d8445ea63a576b0876"
+dependencies = [
+ "futures-channel",
+ "futures-core",
+ "futures-executor",
+ "futures-io",
+ "futures-sink",
+ "futures-task",
+ "futures-util",
+]
+
+[[package]]
+name = "futures-channel"
+version = "0.3.31"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "2dff15bf788c671c1934e366d07e30c1814a8ef514e1af724a602e8a2fbe1b10"
+dependencies = [
+ "futures-core",
+ "futures-sink",
+]
+
 [[package]]
 name = "futures-core"
 version = "0.3.31"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "05f29059c0c2090612e8d742178b0580d2dc940c837851ad723096f87af6663e"
 
+[[package]]
+name = "futures-executor"
+version = "0.3.31"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "1e28d1d997f585e54aebc3f97d39e72338912123a67330d723fdbb564d646c9f"
+dependencies = [
+ "futures-core",
+ "futures-task",
+ "futures-util",
+]
+
 [[package]]
 name = "futures-io"
 version = "0.3.31"
@@ -493,6 +529,47 @@ dependencies = [
  "pin-project-lite",
 ]
 
+[[package]]
+name = "futures-macro"
+version = "0.3.31"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "162ee34ebcb7c64a8abebc059ce0fee27c2262618d7b60ed8faf72fef13c3650"
+dependencies = [
+ "proc-macro2",
+ "quote",
+ "syn",
+]
+
+[[package]]
+name = "futures-sink"
+version = "0.3.31"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "e575fab7d1e0dcb8d0c7bcf9a63ee213816ab51902e6d244a95819acacf1d4f7"
+
+[[package]]
+name = "futures-task"
+version = "0.3.31"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "f90f7dce0722e95104fcb095585910c0977252f286e354b5e3bd38902cd99988"
+
+[[package]]
+name = "futures-util"
+version = "0.3.31"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "9fa08315bb612088cc391249efdc3bc77536f16c91f6cf495e6fbe85b20a4a81"
+dependencies = [
+ "futures-channel",
+ "futures-core",
+ "futures-io",
+ "futures-macro",
+ "futures-sink",
+ "futures-task",
+ "memchr",
+ "pin-project-lite",
+ "pin-utils",
+ "slab",
+]
+
 [[package]]
 name = "generic-array"
 version = "0.14.7"
@@ -604,6 +681,12 @@ version = "0.4.27"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "13dc2df351e3202783a1fe0d44375f7295ffb4049267b0f3018346dc122a1d94"
 
+[[package]]
+name = "memchr"
+version = "2.7.5"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "32a282da65faaf38286cf3be983213fcf1d2e2a58700e808f83f4ea9a4804bc0"
+
 [[package]]
 name = "num-traits"
 version = "0.2.19"
@@ -748,6 +831,7 @@ dependencies = [
  "cipher",
  "clap",
  "colored",
+ "futures",
  "hmac",
  "libc",
  "orx-concurrent-vec",
@@ -767,6 +851,12 @@ version = "0.2.16"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "3b3cff922bd51709b605d9ead9aa71031d81447142d828eb4a6eba76fe619f9b"
 
+[[package]]
+name = "pin-utils"
+version = "0.1.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "8b870d8c151b6f2fb93e84a13146138f05d02ed11c7e7c54f8826aaaf7c9f184"
+
 [[package]]
 name = "piper"
 version = "0.2.4"

Cargo.toml

@@ -19,6 +19,7 @@ chrono = "0.4.41"
 cipher = { version = "0.4.4", features = ["block-padding", "alloc"] }
 clap = { version = "4.5.41", features = ["derive"] }
 colored = "3.0.0"
+futures = "0.3.31"
 hmac = "0.12.1"
 orx-concurrent-vec = "3.6.0"
 pbkdf2 = "0.12.2"
@@ -27,13 +28,23 @@ rayon = "1.10.0"
 readonly = "0.2.13"
 sha2 = "0.10.9"
 smol = "2.0.2"
-tappers = "0.4.2"
+
 
 [target.'cfg(windows)'.dependencies]
 winapi = { version = "0.3", features = ["winsock2", "mswsock", "minwindef"] }
+tappers = { version = "0.4.2", features = ["wintun"] }
 
 [target.'cfg(unix)'.dependencies]
 libc = "0.2"
+tappers = "0.4.2"
+
+[target.x86_64-pc-windows-gnu]
+linker = "/usr/bin/x86_64-w64-mingw32-gcc"
+ar = "/usr/bin/x86_64-w64-mingw32-ar"
+
+[target.i686-pc-windows-gnu]
+linker = "/usr/bin/i686-w64-mingw32-gcc"
+ar = "/usr/bin/i686-w64-mingw32-ar"
 
 
 [features]

README.md

@@ -0,0 +1,17 @@
+# Pea 2 Pea  
+very simple P2P VPN(Virtual Network yes, Private maybe),  
+this program is intended to help you play LAN games over internet  
+when all clients are behind Full-cone NAT, does not work with clients behind Symmetric NAT  
+at least for now  
+
+## how to run  
+> install rustc and cargo or rustup, you will need 2024 edition  
+> build using  
+> ```bash
+> # to build
+> cargo build --release
+> # to run server(registrar)
+> ./target/release/server
+> # to run client
+> sudo ./target/release/client -r SERVER_IP -n NETWORK_ID -P PASSWORD # password is optional
+> ```

src/client/main.rs

@@ -21,7 +21,8 @@ use crate::types::Network;
 struct Cli {
     #[arg(short = 'r', long = "registrar")]
     #[arg(help = "registrar ip address or hostname")]
-    registrar: String,
+    #[arg(required_unless_present = "version")]
+    registrar: Option<String>,
 
     #[arg(short = 'p', long = "registrar-port")]
     #[arg(help = format!("optional Port number for the registrar service (1-65535) Default: {}", SERVER_PORT))]
@@ -29,7 +30,8 @@ struct Cli {
 
     #[arg(short = 'n', long = "network-id")]
     #[arg(help = "your virtual network id that allows other people to connect to you")]
-    network_id: String,
+    #[arg(required_unless_present = "version")]
+    network_id: Option<String>,
 
     #[arg(short = 'P', long = "password")]
     #[arg(
@@ -46,16 +48,30 @@ struct Cli {
 
     #[arg(short = 'V', long = "version")]
     version: bool,
+
+    #[arg(short = 'S', long = "symmetric_NAT_bypass_mode")]
+    #[arg(help = "NOT IMPLEMENTED")]
+    symmetric_nat_bypass_mode: bool,
+}
+
+fn print_version() {
+    println!("Pea 2 Pea {}", VERSION);
 }
 
 fn main() -> std::io::Result<()> {
     let cli = <Cli as clap::Parser>::parse();
-    if cli.network_id.len() > 0xff {
+    if cli.version {
+        print_version();
+        exit(0);
+    }
+    let network_id = cli.network_id.unwrap();
+    let registrar = cli.registrar.unwrap();
+    if network_id.len() > 0xff {
         eprintln!("network id cannot have more then 255 charactes");
         exit(7); // posix for E2BIG
     }
     let mut buf: [u8; UDP_BUFFER_SIZE] = [0; UDP_BUFFER_SIZE];
-    let (socket, virtual_network, my_public_sock_addr) = {
+    let (socket, virtual_network, _my_public_sock_addr) = {
         let socket: Arc<UdpSocket> = Arc::new(|| -> std::io::Result<UdpSocket> {
             match UdpSocket::bind("0.0.0.0:0") {
                 // bind to OS assigned random port
@@ -77,11 +93,11 @@ fn main() -> std::io::Result<()> {
         })();
 
         #[allow(non_snake_case)] // i think this is valid snake case but rustc doesnt think so
-        let server_SocketAddr: core::net::SocketAddr = format!("{}:{}", cli.registrar, server_port)
+        let server_SocketAddr: core::net::SocketAddr = format!("{}:{}", registrar, server_port)
             .parse()
             .expect(&format!(
                 "{}:{} is invalid sock addr",
-                cli.registrar, server_port
+                registrar, server_port
             ));
 
         // query here
@@ -90,6 +106,11 @@ fn main() -> std::io::Result<()> {
                 Ok(s) => s,
                 Err(e) => return Err(ServerErrorResponses::into_io_error(e)),
             };
+        println!(
+            "{} my bublic sockaddr: {}",
+            "[LOG]".blue(),
+            public_sock_addr_raw
+        );
 
         let mut salt: [u8; BLOCK_SIZE] = [0u8; BLOCK_SIZE];
         let mut iv: [u8; BLOCK_SIZE] = [0u8; BLOCK_SIZE];
@@ -125,7 +146,7 @@ fn main() -> std::io::Result<()> {
                 &mut buf,
                 &server_SocketAddr,
                 &socket,
-                &cli.network_id,
+                &network_id,
                 &cli.password,
             ) {
                 Ok(n) => {
@@ -137,7 +158,7 @@ fn main() -> std::io::Result<()> {
                     let _ = net::send_heartbeat(
                         &mut buf,
                         &server_SocketAddr,
-                        &socket,
+                        socket.clone(),
                         &n,
                         &public_sock_addr,
                         &iv,
@@ -152,7 +173,7 @@ fn main() -> std::io::Result<()> {
                             None => false,
                         },
                         encryption_key,
-                        cli.network_id,
+                        network_id,
                         salt,
                         Vec::with_capacity(1),
                     );
@@ -195,18 +216,43 @@ fn main() -> std::io::Result<()> {
         let encrypted = network_write_lock.encrypted;
         let key = network_write_lock.key;
         network_write_lock.peers.iter_mut().for_each(|peer| {
+            println!(
+                "{} firing salvo of PUNCHING packets to {}",
+                "[LOG]".blue(),
+                peer.sock_addr
+            );
+            for _ in 0..MAPPING_SHOT_COUNT {
+                match socket.send_to(&[P2PMethods::DO_NOTHING as u8], peer.sock_addr) {
+                    Ok(s) => {
+                        #[cfg(debug_assertions)]
+                        eprintln!("send {} bytes", s);
+                    }
+                    Err(e) => eprintln!("{} failed to send puching packet: {}", "[ERROR]".red(), e),
+                }
+            }
+            println!(
+                "{} packets away!, awiting a bit for NAT mappings to estabilish",
+                "[LOG]".blue()
+            );
+            std::thread::sleep(Duration::from_millis(2000));
+            for _ in 0..STANDARD_RETRY_MAX {
                 match net::P2P_query(&mut buf, &peer.sock_addr, &socket, encrypted, key) {
                     Ok(ip) => {
                         ips_used[ip.octets()[3] as usize] = true;
                         peer.private_ip = ip;
+                        break;
                     }
-                Err(e) => eprintln!(
+                    Err(e) => {
+                        eprintln!(
                             "{} while getting ip from peer: {}, Error: {}",
                             "[ERROR]".red(),
                             peer.sock_addr,
                             e
-                ),
+                        );
-            };
+                        std::thread::sleep(Duration::from_millis(2000));
+                    }
+                }
+            }
         });
 
         network_write_lock.private_ip = std::net::Ipv4Addr::new(
@@ -273,6 +319,7 @@ fn main() -> std::io::Result<()> {
     } // just let me have my thread
 
     smol::block_on(async {
+        println!("{} listener started!", "[LOG]".blue());
         loop {
             buf.fill(0);
             match socket.recv_from(&mut buf) {
@@ -287,7 +334,7 @@ fn main() -> std::io::Result<()> {
                         socket.clone(),
                         data_lenght,
                     ))
-                    .detach();
+                    .await;
                 }
                 Err(e) => {
                     eprintln!(

src/client/net.rs

@@ -8,6 +8,7 @@ use super::types;
 use colored::Colorize;
 use pea_2_pea::{shared::net::send_and_recv_with_retry, *};
 use rand::{RngCore, rng};
+use sha2::Digest;
 
 pub fn query_request(
     buf: &mut [u8; UDP_BUFFER_SIZE],
@@ -254,7 +255,7 @@ pub fn get_request(
 pub fn send_heartbeat(
     buf: &mut [u8; UDP_BUFFER_SIZE],
     dst: &SocketAddr,
-    socket: &UdpSocket,
+    socket: Arc<std::net::UdpSocket>,
     network: &types::Network,
     my_public_sock_addr: &Box<[u8]>,
     iv: &[u8; BLOCK_SIZE as usize],
@@ -299,7 +300,16 @@ pub fn send_heartbeat(
             .collect::<String>(),
     );
 
-    match send_and_recv_with_retry(buf, &send_buf, dst, socket, STANDARD_RETRY_MAX) {
+    {
+        let sock_clone = socket.clone();
+        let send_buf_clone: Box<[u8]> = send_buf.clone();
+        let dst_clone: SocketAddr = dst.clone();
+        std::thread::spawn(move || {
+            periodic_heart_beat(sock_clone, send_buf_clone, dst_clone);
+        });
+    }
+
+    match send_and_recv_with_retry(buf, &send_buf, dst, &socket, STANDARD_RETRY_MAX) {
         Ok((data_lenght, _)) => return Ok(data_lenght),
         Err(e) => return Err(e),
     }
@@ -413,7 +423,7 @@ pub fn P2P_hello(
 }
 
 pub async fn handle_incoming_connection(
-    mut buf: [u8; UDP_BUFFER_SIZE],
+    buf: [u8; UDP_BUFFER_SIZE],
     src: SocketAddr,
     network: Arc<RwLock<types::Network>>,
     tun_iface: Arc<tappers::Tun>,
@@ -425,23 +435,37 @@ pub async fn handle_incoming_connection(
     match buf[0] {
         x if x == P2PMethods::PACKET as u8 => {
             #[cfg(debug_assertions)]
-            println!("PACKET from difernt peer receved");
+            println!("PACKET from different peer receved");
 
             if network.read().unwrap().encrypted {
                 match shared::crypto::decrypt(
                     &network.read().unwrap().key,
                     &buf[P2PStandardDataPositions::IV as usize
                         ..P2PStandardDataPositions::IV as usize + BLOCK_SIZE],
-                    &buf[P2PStandardDataPositions::DATA as usize..data_lenght as usize-1 /*compensate for size and index diference*/],
+                    &buf[P2PStandardDataPositions::DATA as usize..data_lenght as usize],
                 ) {
-                    Ok(data) => match tun_iface.send(&data) {
+                    Ok(data) => {
+                        #[cfg(debug_assertions)]
+                        eprintln!(
+                            "packet contets: {}\nhash: {:x}",
+                            data.iter()
+                                .map(|x| format!("{:02X} ", x))
+                                .collect::<String>(),
+                            {
+                                let mut hasher = sha2::Sha256::new();
+                                hasher.update(&data);
+                                hasher.finalize()
+                            }
+                        );
+                        match tun_iface.send(&data) {
                             Ok(_) => {}
                             Err(e) => eprintln!(
                                 "{} failed to write packet to tun interface, Error: {}",
                                 "[WARNING]".yellow(),
                                 e
                             ),
-                    },
+                        }
+                    }
                     Err(e) => eprintln!(
                         "{} failed to decrypt packet, Error: {}",
                         "[WARNING]".yellow(),
@@ -449,9 +473,15 @@ pub async fn handle_incoming_connection(
                     ),
                 }
             } else {
-                match tun_iface.send(&buf[P2PStandardDataPositions::DATA as usize..data_lenght as usize-1 /*compensate for size and index diference*/]) {
+                match tun_iface
-                    Ok(_) => {},
+                    .send(&buf[P2PStandardDataPositions::DATA as usize..data_lenght as usize])
-                    Err(e) => eprintln!("{} failed to write packet to tun interface, Error: {}", "[WARNING]".yellow(), e),
+                {
+                    Ok(_) => {}
+                    Err(e) => eprintln!(
+                        "{} failed to write packet to tun interface, Error: {}",
+                        "[WARNING]".yellow(),
+                        e
+                    ),
                 };
             }
         }
@@ -511,6 +541,11 @@ pub async fn handle_incoming_connection(
         x if x == P2PMethods::PEER_HELLO as u8 => {
             println!("{} peer hello receved from: {}", "[LOG]".blue(), src);
 
+            if data_lenght - 1 < P2PStandardDataPositions::DATA as usize {
+                eprintln!("{} peer hello packet too small", "[ERROR]".red());
+                return;
+            }
+
             let tmp_data: Vec<u8>;
             {
                 let mut network_write_lock = network.write().unwrap();
@@ -677,7 +712,7 @@ pub async fn handle_incoming_connection(
                 }
             };
             for _ in 0..MAPPING_SHOT_COUNT {
-                match socket.send_to(&[P2PMethods::PEER_QUERY as u8], peer_addr) {
+                match socket.send_to(&[P2PMethods::DO_NOTHING as u8], peer_addr) {
                     Ok(s) => {
                         #[cfg(debug_assertions)]
                         eprintln!("send {} bytes", s);
@@ -686,6 +721,12 @@ pub async fn handle_incoming_connection(
                 }
             }
         }
+        x if x == P2PMethods::DO_NOTHING as u8 => {
+            println!(
+                "{} punching succesful DO_NOTHING receved",
+                "[SUCCESS]".green()
+            );
+        }
         _ => {
             eprintln!(
                 "{} unknown method ID: 0x{:02x}, Droping!",
@@ -695,3 +736,24 @@ pub async fn handle_incoming_connection(
         }
     }
 }
+
+pub fn periodic_heart_beat(socket: Arc<UdpSocket>, send_buf: Box<[u8]>, dst: SocketAddr) {
+    loop {
+        std::thread::sleep(std::time::Duration::from_secs(30));
+        println!("{} sending heartbeat to server", "[LOG]".blue());
+
+        match socket.send_to(&send_buf, dst) {
+            Ok(size) => {
+                #[cfg(debug_assertions)]
+                println!("send {} bytes", size);
+            }
+            Err(e) => {
+                eprintln!(
+                    "{} failed to send heartbeat to server Error: {}",
+                    "[ERROR]".red(),
+                    e
+                );
+            }
+        }
+    }
+}

src/client/tun.rs

@@ -1,8 +1,9 @@
-use std::sync::{Arc, RwLock};
-
 use pea_2_pea::*;
 use rand::RngCore;
 use rayon::prelude::*;
+use sha2::Digest;
+use std::sync::{Arc, RwLock};
+use tappers::Interface;
 
 use crate::types::Network;
 
@@ -10,20 +11,41 @@ pub fn create_tun_interface(
     private_ip: std::net::Ipv4Addr,
     if_name: Option<String>,
 ) -> Result<tappers::Tun, std::io::Error> {
-    let mut tun_iface: tappers::Tun = tappers::Tun::new_named(tappers::Interface::new(
+    #[cfg(not(target_os = "windows"))]
-        if_name.unwrap_or("pea0".to_owned()),
+    let mut tun_iface: tappers::Tun = tappers::Tun::new_named(Interface::new(
+        &if_name.unwrap_or(DEFAULT_INTERFACE_NAME.to_owned()),
     )?)?;
+    #[cfg(target_os = "windows")]
+    let mut tun_iface: tappers::Tun = tappers::Tun::new()?;
+    #[cfg(not(target_os = "windows"))]
+    {
         let mut addr_req = tappers::AddAddressV4::new(private_ip);
         addr_req.set_netmask(24);
         let mut broadcast_addr_oct = private_ip.octets();
         broadcast_addr_oct[3] = 255;
         addr_req.set_broadcast(std::net::Ipv4Addr::from(broadcast_addr_oct));
         tun_iface.add_addr(addr_req)?;
+    }
+    #[cfg(target_os = "windows")]
+    std::process::Command::new("netsh").args([
+        "interface",
+        "ipv4",
+        "set",
+        "address",
+        &format!(
+            "name=\"{}\"",
+            tun_iface.name()?.name().into_string().unwrap()
+        ),
+        "static",
+        &private_ip.to_string(),
+        "255.255.255.0",
+    ]);
+
     tun_iface.set_up()?;
     return Ok(tun_iface);
 }
 
-pub async fn read_tun_iface(
+pub fn read_tun_iface(
     tun_iface: Arc<tappers::Tun>,
     socket: Arc<std::net::UdpSocket>,
     network: Arc<RwLock<Network>>,
@@ -31,10 +53,12 @@ pub async fn read_tun_iface(
     let mut buf: [u8; IP_BUFFER_SIZE] = [0u8; IP_BUFFER_SIZE];
 
     smol::block_on(async {
+        #[cfg(debug_assertions)]
+        eprintln!("Started listening for ip packets");
         loop {
             let data_lenght = tun_iface.recv(&mut buf).unwrap(); // build in auto termination, isn't it great
             smol::spawn(handle_ip_packet(
-                buf[..data_lenght - 1].to_vec().into(),
+                buf[..data_lenght].to_vec().into(),
                 network.clone(),
                 socket.clone(),
             ))
@@ -48,6 +72,23 @@ pub async fn handle_ip_packet(
     network: Arc<RwLock<Network>>,
     socket: Arc<std::net::UdpSocket>,
 ) {
+    #[cfg(debug_assertions)]
+    eprintln!("Processing IP packet");
+
+    #[cfg(debug_assertions)]
+    eprintln!(
+        "packet contets: {}\nhash: {:x}",
+        packet_data
+            .iter()
+            .map(|x| format!("{:02X} ", x))
+            .collect::<String>(),
+        {
+            let mut hasher = sha2::Sha256::new();
+            hasher.update(&packet_data);
+            hasher.finalize()
+        }
+    );
+
     let dst_ip = std::net::Ipv4Addr::from(
         match <[u8; 4]>::try_from(
             &packet_data[DEST_IN_IPV4_OFFSET..DEST_IN_IPV4_OFFSET + IPV4_SIZE],
@@ -64,22 +105,25 @@ pub async fn handle_ip_packet(
     let mut iv: [u8; BLOCK_SIZE] = [0u8; BLOCK_SIZE];
     rng.fill_bytes(&mut iv);
 
-    let mut encrypted_data =
+    let mut procesed_data: Vec<u8> = if network.read().unwrap().encrypted {
         match shared::crypto::encrypt(&network.read().unwrap().key, &iv, &packet_data) {
             Ok(cr) => cr,
             Err(e) => {
                 eprintln!("Failed to encrypt packet droping it: {}", e);
                 return;
             }
+        }
+    } else {
+        packet_data.to_vec()
     };
 
-    encrypted_data.insert(0, P2PMethods::PACKET as u8);
+    procesed_data.insert(0, P2PMethods::PACKET as u8);
-    encrypted_data.splice(1..1, iv);
+    procesed_data.splice(1..1, iv);
 
     if dst_ip.octets()[3] == 255 {
         network.read().unwrap().peers.par_iter().for_each(|peer| {
             // broadcast
-            match socket.send_to(&encrypted_data, peer.sock_addr) {
+            match socket.send_to(&procesed_data, peer.sock_addr) {
                 Ok(_) => {}
                 Err(e) => eprintln!("failed to send packet: {}", e),
             };
@@ -97,7 +141,7 @@ pub async fn handle_ip_packet(
             None => return,
         };
 
-        match socket.send_to(&encrypted_data, dst) {
+        match socket.send_to(&procesed_data, dst) {
             Ok(_) => {}
             Err(e) => eprintln!("failed to send packet: {}", e),
         };

src/lib.rs

@@ -4,7 +4,7 @@ pub const SERVER_PORT: u16 = 3543;
 pub const UDP_BUFFER_SIZE: usize = 65527;
 pub const IP_BUFFER_SIZE: usize = 65535;
 pub const DEFAULT_TIMEOUT: u64 = 30;
-pub const VERSION: &str = "v0.1";
+pub const VERSION: &str = "v1.1";
 pub const BLOCK_SIZE: usize = 16;
 pub const STANDARD_RETRY_MAX: usize = 10;
 
@@ -15,6 +15,8 @@ pub const MAPPING_SHOT_COUNT: u8 = 5;
 
 pub const DEFAULT_NETWORK_PREFIX: [u8; 3] = [172, 22, 44];
 
+pub const DEFAULT_INTERFACE_NAME: &str = "pea0";
+
 #[repr(u8)]
 #[allow(non_camel_case_types)]
 pub enum ServerMethods {
@@ -122,6 +124,7 @@ pub enum P2PMethods {
     PEER_GOODBYE = 22, // sends private ip encrypted if on
     PACKET = 23,       // sends IP packet encrypted if on
     NEW_CLIENT_NOTIFY = 24,
+    DO_NOTHING = 25,
 }
 #[repr(usize)]
 pub enum P2PStandardDataPositions {

src/server/main.rs

@@ -1,34 +1,35 @@
 mod net;
 mod types;
 mod utils;
-use std::{
+use smol::net::UdpSocket;
-    net::UdpSocket,
+use std::{process::exit, sync::Arc};
-    process::exit,
-    sync::{Arc, RwLock},
-};
 
 use orx_concurrent_vec::ConcurrentVec;
 fn main() -> std::io::Result<()> {
     {
         let socket: Arc<UdpSocket> = Arc::new(
-            (|| -> std::io::Result<UdpSocket> {
+            smol::block_on(async {
                 let listen_port: u16 = pea_2_pea::SERVER_PORT;
-                match UdpSocket::bind(format!("0.0.0.0:{}", listen_port)) {
+                UdpSocket::bind(format!("0.0.0.0:{}", listen_port)).await
-                    Ok(socket) => return Ok(socket),
+            })
-                    Err(e) => return Err(e),
-                }
-            })()
             .expect("Failed to bind to any available port"),
         );
 
         let registration_vector: Arc<ConcurrentVec<types::Registration>> =
             Arc::new(orx_concurrent_vec::ConcurrentVec::new());
 
+        {
+            let reg_clone = registration_vector.clone();
+            std::thread::spawn(move || {
+                utils::disconnected_cleaner(reg_clone);
+            });
+        }
+
         let mut buf: [u8; pea_2_pea::UDP_BUFFER_SIZE] = [0u8; pea_2_pea::UDP_BUFFER_SIZE];
         smol::block_on(async {
             loop {
                 buf.fill(0);
-                match socket.recv_from(&mut buf) {
+                match socket.recv_from(&mut buf).await {
                     Ok((data_length, src)) => {
                         smol::spawn(net::handle_request(
                             buf,

src/server/net.rs

@@ -1,17 +1,29 @@
 use crate::utils::send_general_error_to_client;
 
+use smol::net::UdpSocket;
 use super::types;
 use super::utils;
-use colored::Colorize;
 use orx_concurrent_vec::ConcurrentVec;
 use pea_2_pea::*;
 use rayon::prelude::*;
 
 use std::sync::Arc;
 use std::u8;
+
+async fn send_with_count(socket: std::sync::Arc<UdpSocket> , dst: &core::net::SocketAddr, buf: &[u8]) {
+    match socket.send_to(buf, dst).await {
+                Ok(s) => {
+                    #[cfg(debug_assertions)]
+                    eprintln!("send {} bytes", s);
+                }
+                Err(e) => {
+                    eprintln!("Error snding data: {}", e);
+                }
+            }
+}
 pub async fn handle_request(
     buf: [u8; UDP_BUFFER_SIZE],
-    socket: std::sync::Arc<std::net::UdpSocket>,
+    socket: std::sync::Arc<UdpSocket>,
     src: core::net::SocketAddr,
     data_len: usize,
     registration_vector: Arc<ConcurrentVec<types::Registration>>,
@@ -25,15 +37,7 @@ pub async fn handle_request(
             let mut send_vec: Vec<u8> = client_sock_addr_str.into();
             send_vec.insert(0, ServerMethods::QUERY as u8);
 
-            match socket.send_to(&send_vec, &src) {
+            send_with_count(socket, &src, &send_vec).await;
-                Ok(s) => {
-                    #[cfg(debug_assertions)]
-                    eprintln!("send {} bytes", s);
-                }
-                Err(e) => {
-                    eprintln!("Error snding data: {}", e);
-                }
-            }
         }
 
         x if x == ServerMethods::GET as u8 => {
@@ -63,15 +67,7 @@ pub async fn handle_request(
                 .find(|elem| elem.map(|s| &s.net_id == &net_id)) // find if id exists
             {
                 Some(registration) => registration,
-                None => {match socket.send_to(&[ServerResponse::ID_DOESNT_EXIST as u8], src){
+                None => {futures::executor::block_on(send_with_count(socket, &src ,&[ServerResponse::ID_DOESNT_EXIST as u8]));
-                Ok(s) => {
-                    #[cfg(debug_assertions)]
-                    eprintln!("send {} bytes", s);
-                }
-                Err(e) => {
-                    eprintln!("Error sending data: {}", e);
-                }
-            };
                     return;
                 },
             }
@@ -131,15 +127,7 @@ pub async fn handle_request(
                 return;
             }
 
-            match socket.send_to(&send_vec, &src) {
+            send_with_count(socket, &src, &send_vec).await;
-                Ok(s) => {
-                    #[cfg(debug_assertions)]
-                    eprintln!("send {} bytes", s);
-                }
-                Err(e) => {
-                    eprintln!("Error snding data: {}", e);
-                }
-            }
         }
         x if x == ServerMethods::REGISTER as u8 => {
             #[cfg(debug_assertions)]
@@ -178,15 +166,7 @@ pub async fn handle_request(
                 .find(|elem| elem.map(|s| &s.net_id == &net_id)) // find if id exists
             {
                 Some(_) => {
-                    match socket.send_to(&[ServerResponse::ID_EXISTS as u8], src) {
+                        futures::executor::block_on(send_with_count(socket, &src, &[ServerResponse::ID_EXISTS as u8]));
-                        Ok(s) => {
-                            #[cfg(debug_assertions)]
-                            eprintln!("send {} bytes", s);
-                        }
-                        Err(e) => {
-                            eprintln!("Error sending data: {}", e);
-                        }
-                    };
                     return;
                 }
                 None => {}
@@ -245,15 +225,7 @@ pub async fn handle_request(
                 iv,
                 src
             ));
-            match socket.send_to(&[ServerMethods::REGISTER as u8], src) {
+            send_with_count(socket, &src, &[ServerMethods::REGISTER as u8]).await;
-                Ok(s) => {
-                    #[cfg(debug_assertions)]
-                    eprintln!("send {} bytes", s);
-                }
-                Err(e) => {
-                    eprintln!("Error sending data: {}", e);
-                }
-            }
             #[cfg(debug_assertions)]
             println!("network registered");
         }
@@ -333,13 +305,9 @@ pub async fn handle_request(
                             send_buf[0] = P2PMethods::NEW_CLIENT_NOTIFY as u8;
                             send_buf[P2PStandardDataPositions::IV as usize..P2PStandardDataPositions::IV as usize+ BLOCK_SIZE].copy_from_slice(&iv);
                             send_buf[P2PStandardDataPositions::DATA as usize..P2PStandardDataPositions::DATA as usize + sock_addr_len as usize].copy_from_slice(&sock_addr);
-                            match  socket.send_to(&send_buf, src) {
+                            let sock_clone = socket.clone();
-                                Ok(data_lenght) => {
+                            futures::executor::block_on(async move {
-                                    #[cfg(debug_assertions)]
+                            send_with_count(sock_clone, &c.src, &send_buf).await});
-                                    eprintln!("send {} bytes", data_lenght);
-                                },
-                                Err(e) => eprintln!("{} failed to send data to client Error: {}", "[ERROR]".red(), e),
-                            };
                         });
                             
                             r.clients.push(types::Client::new(sock_addr.clone(), current_time, iv, src));
@@ -347,26 +315,9 @@ pub async fn handle_request(
                     };
                 });
                 }
-                None => {match socket.send_to(&[ServerResponse::ID_DOESNT_EXIST as u8], src) {
+                None => {futures::executor::block_on(send_with_count(socket, &src, &[ServerResponse::ID_DOESNT_EXIST as u8])); return;}
-                Ok(s) => {
-                    #[cfg(debug_assertions)]
-                    eprintln!("send {} bytes", s);
-                }
-                Err(e) => {
-                    eprintln!("Error sending data: {}", e);
-                }
-            } return;}
-            }
-            match socket.send_to(&[ServerMethods::HEARTBEAT as u8], src) {
-                // succes responce
-                Ok(s) => {
-                    #[cfg(debug_assertions)]
-                    eprintln!("send {} bytes", s);
-                }
-                Err(e) => {
-                    eprintln!("Error sending data: {}", e);
-                }
             }
+            send_with_count(socket, &src, &[ServerMethods::HEARTBEAT as u8]).await;
             return;
         }
         _ => {

src/server/types.rs

@@ -1,5 +1,4 @@
 use pea_2_pea::*;
-use std::sync::{Arc, atomic::Ordering};
 
 #[derive(Clone)]
 #[readonly::make]
@@ -41,6 +40,7 @@ pub struct Registration {
     pub encrypted: bool,
     #[readonly]
     pub salt: [u8; BLOCK_SIZE as usize],
+    pub invalid: bool,
 }
 
 impl Registration {
@@ -64,64 +64,7 @@ impl Registration {
             encrypted,
             last_heart_beat: heart_beat,
             salt: salt.unwrap_or([0; BLOCK_SIZE as usize]),
+            invalid: false,
         }
     }
 }
-
-pub struct BatchLock {
-    inner: std::sync::Mutex<bool>, // true = blocking new locks
-    condvar: std::sync::Condvar,
-    active_count: std::sync::atomic::AtomicUsize,
-}
-
-pub struct LockGuard {
-    lock: Arc<BatchLock>,
-}
-
-impl BatchLock {
-    pub fn new() -> Arc<Self> {
-        Arc::new(BatchLock {
-            inner: std::sync::Mutex::new(false),
-            condvar: std::sync::Condvar::new(),
-            active_count: std::sync::atomic::AtomicUsize::new(0),
-        })
-    }
-
-    // Acquire a lock (blocks if waiting for all to unlock)
-    pub fn lock(self: &Arc<Self>) -> LockGuard {
-        let mut blocking = self.inner.lock().unwrap();
-
-        // Wait while new locks are blocked
-        while *blocking {
-            blocking = self.condvar.wait(blocking).unwrap();
-        }
-
-        self.active_count.fetch_add(1, Ordering::SeqCst);
-
-        LockGuard {
-            lock: Arc::clone(self),
-        }
-    }
-
-    // Block new locks and wait for all current locks to finish
-    pub fn wait_all_unlock(self: &Arc<Self>) {
-        // Block new locks
-        *self.inner.lock().unwrap() = true;
-
-        // Wait for all active locks to finish
-        while self.active_count.load(Ordering::SeqCst) > 0 {
-            std::thread::sleep(std::time::Duration::from_millis(1));
-        }
-
-        // Allow new locks again
-        *self.inner.lock().unwrap() = false;
-        self.condvar.notify_all();
-    }
-}
-
-impl Drop for LockGuard {
-    fn drop(&mut self) {
-        // Automatically release lock when guard is dropped
-        self.lock.active_count.fetch_sub(1, Ordering::SeqCst);
-    }
-}

src/server/utils.rs

@@ -1,8 +1,10 @@
+use colored::Colorize;
 use pea_2_pea::*;
+
 pub fn send_general_error_to_client<T: std::error::Error>(
     dst: core::net::SocketAddr,
     e: T,
-    socket: std::sync::Arc<std::net::UdpSocket>,
+    socket: std::sync::Arc<smol::net::UdpSocket>,
 ) {
     let mut resp_buf: Box<[u8]> = vec![0; e.to_string().len() + 1].into_boxed_slice();
 
@@ -11,3 +13,23 @@ pub fn send_general_error_to_client<T: std::error::Error>(
 
     let _ = socket.send_to(&[ServerResponse::GENERAL_ERROR as u8], dst);
 }
+
+pub fn disconnected_cleaner(
+    registration_vector: std::sync::Arc<
+        orx_concurrent_vec::ConcurrentVec<crate::types::Registration>,
+    >,
+) {
+    loop {
+        std::thread::sleep(std::time::Duration::from_secs(120));
+        println!("{} starting cleanup", "[LOG]".blue());
+        let time_now = chrono::Utc::now().timestamp();
+        unsafe {
+            registration_vector.iter_mut().for_each(|reg| {
+                reg.clients.retain(|c| time_now - c.last_heart_beat < 120);
+                if time_now - reg.last_heart_beat > 120 {
+                    reg.invalid = true;
+                }
+            })
+        }
+    }
+}

src/shared/net.rs

@@ -127,8 +127,10 @@ pub fn send_and_recv_with_retry(
 
     let mut retry_count: usize = 0;
 
+    let mut resend: bool = true;
+
     loop {
-        match socket.send_to(send_buf, dst) {
+        if resend {match socket.send_to(send_buf, dst) {
             Ok(s) => {
                 #[cfg(debug_assertions)]
                 eprintln!("send {} bytes", s);
@@ -145,7 +147,7 @@ pub fn send_and_recv_with_retry(
                 }
                 _ => return Err(ServerErrorResponses::IO(e)),
             },
-        }
+        }} else {resend = true;}
     
         #[cfg(target_os = "linux")]
         if let Err(icmp_error) = check_icmp_error_queue(socket) {
@@ -176,6 +178,10 @@ pub fn send_and_recv_with_retry(
                     x if x == ServerResponse::ID_EXISTS as u8 => {
                         return Err(ServerErrorResponses::ID_EXISTS);
                     }
+                    x if x == P2PMethods::DO_NOTHING as u8 => {
+                        resend = false;
+                        continue;
+                    }
                     _ => {
                         continue;
                     }