diff --git a/benches/.code.rs b/benches/.code.rs
index ad14927..07b7683 100644
--- a/benches/.code.rs
+++ b/benches/.code.rs
@@ -14,8 +14,19 @@ mod types {
 mod table {
     include!("../src/table.rs");
 }
-mod cloud {
-    include!("../src/cloud.rs");
+mod engine {
+    pub mod common {
+        include!("../src/engine/common.rs");
+    }
+    mod shared {
+        include!("../src/engine/shared.rs");
+    }
+    mod device_thread {
+        include!("../src/engine/device_thread.rs");
+    }
+    mod socket_thread {
+        include!("../src/engine/socket_thread.rs");
+    }
 }
 mod config {
     include!("../src/config.rs");
diff --git a/benches/criterion.rs b/benches/criterion.rs
index 6d4f6ad..2fb498b 100644
--- a/benches/criterion.rs
+++ b/benches/criterion.rs
@@ -1,6 +1,7 @@
 #![allow(dead_code, unused_macros, unused_imports)]
 #[macro_use] extern crate serde;
 #[macro_use] extern crate log;
+#[macro_use] extern crate tokio;
 
 use criterion::{criterion_group, criterion_main, Criterion, Throughput};
 
diff --git a/benches/valgrind.rs b/benches/valgrind.rs
index 741be70..f56e7e4 100644
--- a/benches/valgrind.rs
+++ b/benches/valgrind.rs
@@ -1,6 +1,7 @@
 #![allow(dead_code, unused_macros, unused_imports)]
 #[macro_use] extern crate serde;
 #[macro_use] extern crate log;
+#[macro_use] extern crate tokio;
 
 use iai::{black_box, main};
 
diff --git a/src/engine/common.rs b/src/engine/common.rs
new file mode 100644
index 0000000..bf7464f
--- /dev/null
+++ b/src/engine/common.rs
@@ -0,0 +1,146 @@
+use std::{fs::File, hash::BuildHasherDefault};
+use tokio;
+
+use fnv::FnvHasher;
+
+use crate::{
+    config::Config,
+    crypto::PeerCrypto,
+    device::Device,
+    engine::{
+        device_thread::DeviceThread,
+        shared::{SharedPeerCrypto, SharedTable, SharedTraffic},
+        socket_thread::SocketThread,
+    },
+    error::Error,
+    messages::AddrList,
+    net::Socket,
+    payload::Protocol,
+    port_forwarding::PortForwarding,
+    types::NodeId,
+    util::{CtrlC, Time, TimeSource},
+};
+
+pub type Hash = BuildHasherDefault<FnvHasher>;
+
+pub const STATS_INTERVAL: Time = 60;
+pub const SPACE_BEFORE: usize = 100;
+
+pub struct PeerData {
+    pub addrs: AddrList,
+    #[allow(dead_code)] // TODO: export in status
+    pub last_seen: Time,
+    pub timeout: Time,
+    pub peer_timeout: u16,
+    pub node_id: NodeId,
+    pub crypto: PeerCrypto,
+}
+
+#[derive(Clone)]
+pub struct ReconnectEntry {
+    address: Option<(String, Time)>,
+    resolved: AddrList,
+    tries: u16,
+    timeout: u16,
+    next: Time,
+    final_timeout: Option<Time>,
+}
+
+pub struct GenericCloud<D: Device, P: Protocol, S: Socket, TS: TimeSource> {
+    socket_thread: SocketThread<S, D, P, TS>,
+    device_thread: DeviceThread<S, D, P, TS>,
+}
+
+impl<D: Device, P: Protocol, S: Socket, TS: TimeSource> GenericCloud<D, P, S, TS> {
+    #[allow(clippy::too_many_arguments)]
+    pub async fn new(
+        config: &Config, socket: S, device: D, port_forwarding: Option<PortForwarding>, stats_file: Option<File>,
+    ) -> Result<Self, Error> {
+        let table = SharedTable::<TS>::new(&config);
+        let traffic = SharedTraffic::new();
+        let peer_crypto = SharedPeerCrypto::new();
+        let device_thread = DeviceThread::<S, D, P, TS>::new(
+            config.clone(),
+            device.duplicate().await?,
+            socket.clone(),
+            traffic.clone(),
+            peer_crypto.clone(),
+            table.clone(),
+        );
+        let mut socket_thread = SocketThread::<S, D, P, TS>::new(
+            config.clone(),
+            device,
+            socket,
+            traffic,
+            peer_crypto,
+            table,
+            port_forwarding,
+            stats_file,
+        );
+        socket_thread.housekeep().await?;
+        Ok(Self { socket_thread, device_thread })
+    }
+
+    pub fn add_peer(&mut self, addr: String) -> Result<(), Error> {
+        unimplemented!()
+    }
+
+    pub async fn run(self) {
+        let ctrlc = CtrlC::new();
+        let device_thread_handle = tokio::spawn(self.device_thread.run());
+        let socket_thread_handle = tokio::spawn(self.socket_thread.run());
+        // TODO: wait for ctrl-c
+        let (dev_ret, sock_ret) = join!(device_thread_handle, socket_thread_handle);
+        dev_ret.unwrap();
+        sock_ret.unwrap();
+    }
+}
+
+#[cfg(test)]
+use crate::device::MockDevice;
+#[cfg(test)]
+use crate::net::MockSocket;
+#[cfg(test)]
+use crate::util::MockTimeSource;
+#[cfg(test)]
+use std::net::SocketAddr;
+
+#[cfg(test)]
+impl<P: Protocol> GenericCloud<MockDevice, P, MockSocket, MockTimeSource> {
+    pub fn socket(&mut self) -> &mut MockSocket {
+        &mut self.socket_thread.socket
+    }
+
+    pub fn device(&mut self) -> &mut MockDevice {
+        &mut self.device_thread.device
+    }
+
+    pub async fn connect(&mut self, addr: SocketAddr) -> Result<(), Error> {
+        self.socket_thread.connect(addr).await
+    }
+
+    pub async fn trigger_socket_event(&mut self) {
+        self.socket_thread.iteration().await
+    }
+
+    pub async fn trigger_device_event(&mut self) {
+        self.device_thread.iteration().await
+    }
+
+    pub async fn trigger_housekeep(&mut self) {
+        try_fail!(self.socket_thread.housekeep().await, "Housekeep failed: {}");
+        try_fail!(self.device_thread.housekeep().await, "Housekeep failed: {}");
+    }
+
+    pub fn is_connected(&self, addr: &SocketAddr) -> bool {
+        self.socket_thread.peers.contains_key(addr)
+    }
+
+    pub fn own_addresses(&self) -> &[SocketAddr] {
+        &self.socket_thread.own_addresses
+    }
+
+    pub async fn get_num(&self) -> usize {
+        self.socket_thread.socket.address().await.unwrap().port() as usize
+    }
+}
diff --git a/src/engine/device_thread.rs b/src/engine/device_thread.rs
index c3a61d4..4b1a3cf 100644
--- a/src/engine/device_thread.rs
+++ b/src/engine/device_thread.rs
@@ -1,6 +1,6 @@
 use super::{
     shared::{SharedPeerCrypto, SharedTable, SharedTraffic},
-    SPACE_BEFORE,
+    common::SPACE_BEFORE,
 };
 use crate::{
     config::Config,
diff --git a/src/engine/mod.rs b/src/engine/mod.rs
index 5daca8a..9251f96 100644
--- a/src/engine/mod.rs
+++ b/src/engine/mod.rs
@@ -5,150 +5,4 @@
 mod device_thread;
 mod shared;
 mod socket_thread;
-
-use std::{fs::File, hash::BuildHasherDefault};
-use tokio;
-
-use fnv::FnvHasher;
-
-use crate::{
-    config::Config,
-    crypto::PeerCrypto,
-    device::Device,
-    engine::{
-        device_thread::DeviceThread,
-        shared::{SharedPeerCrypto, SharedTable, SharedTraffic},
-        socket_thread::SocketThread,
-    },
-    error::Error,
-    messages::AddrList,
-    net::Socket,
-    payload::Protocol,
-    port_forwarding::PortForwarding,
-    types::NodeId,
-    util::{addr_nice, resolve, CtrlC, Time, TimeSource},
-};
-
-pub type Hash = BuildHasherDefault<FnvHasher>;
-
-pub const STATS_INTERVAL: Time = 60;
-const SPACE_BEFORE: usize = 100;
-
-pub struct PeerData {
-    addrs: AddrList,
-    #[allow(dead_code)] // TODO: export in status
-    last_seen: Time,
-    timeout: Time,
-    peer_timeout: u16,
-    node_id: NodeId,
-    crypto: PeerCrypto,
-}
-
-#[derive(Clone)]
-pub struct ReconnectEntry {
-    address: Option<(String, Time)>,
-    resolved: AddrList,
-    tries: u16,
-    timeout: u16,
-    next: Time,
-    final_timeout: Option<Time>,
-}
-
-pub struct GenericCloud<D: Device, P: Protocol, S: Socket, TS: TimeSource> {
-    socket_thread: SocketThread<S, D, P, TS>,
-    device_thread: DeviceThread<S, D, P, TS>,
-}
-
-impl<D: Device, P: Protocol, S: Socket, TS: TimeSource> GenericCloud<D, P, S, TS> {
-    #[allow(clippy::too_many_arguments)]
-    pub async fn new(
-        config: &Config, socket: S, device: D, port_forwarding: Option<PortForwarding>, stats_file: Option<File>,
-    ) -> Result<Self, Error> {
-        let table = SharedTable::<TS>::new(&config);
-        let traffic = SharedTraffic::new();
-        let peer_crypto = SharedPeerCrypto::new();
-        let device_thread = DeviceThread::<S, D, P, TS>::new(
-            config.clone(),
-            device.duplicate().await?,
-            socket.clone(),
-            traffic.clone(),
-            peer_crypto.clone(),
-            table.clone(),
-        );
-        let mut socket_thread = SocketThread::<S, D, P, TS>::new(
-            config.clone(),
-            device,
-            socket,
-            traffic,
-            peer_crypto,
-            table,
-            port_forwarding,
-            stats_file,
-        );
-        socket_thread.housekeep().await?;
-        Ok(Self { socket_thread, device_thread })
-    }
-
-    pub fn add_peer(&mut self, addr: String) -> Result<(), Error> {
-        unimplemented!()
-    }
-
-    pub async fn run(self) {
-        let ctrlc = CtrlC::new();
-        let device_thread_handle = tokio::spawn(self.device_thread.run());
-        let socket_thread_handle = tokio::spawn(self.socket_thread.run());
-        // TODO: wait for ctrl-c
-        let (dev_ret, sock_ret) = join!(device_thread_handle, socket_thread_handle);
-        dev_ret.unwrap();
-        sock_ret.unwrap();
-    }
-}
-
-#[cfg(test)]
-use super::device::MockDevice;
-#[cfg(test)]
-use super::net::MockSocket;
-#[cfg(test)]
-use super::util::MockTimeSource;
-#[cfg(test)]
-use std::net::SocketAddr;
-
-#[cfg(test)]
-impl<P: Protocol> GenericCloud<MockDevice, P, MockSocket, MockTimeSource> {
-    pub fn socket(&mut self) -> &mut MockSocket {
-        &mut self.socket_thread.socket
-    }
-
-    pub fn device(&mut self) -> &mut MockDevice {
-        &mut self.device_thread.device
-    }
-
-    pub async fn connect(&mut self, addr: SocketAddr) -> Result<(), Error> {
-        self.socket_thread.connect(addr).await
-    }
-
-    pub async fn trigger_socket_event(&mut self) {
-        self.socket_thread.iteration().await
-    }
-
-    pub async fn trigger_device_event(&mut self) {
-        self.device_thread.iteration().await
-    }
-
-    pub async fn trigger_housekeep(&mut self) {
-        try_fail!(self.socket_thread.housekeep().await, "Housekeep failed: {}");
-        try_fail!(self.device_thread.housekeep().await, "Housekeep failed: {}");
-    }
-
-    pub fn is_connected(&self, addr: &SocketAddr) -> bool {
-        self.socket_thread.peers.contains_key(addr)
-    }
-
-    pub fn own_addresses(&self) -> &[SocketAddr] {
-        &self.socket_thread.own_addresses
-    }
-
-    pub async fn get_num(&self) -> usize {
-        self.socket_thread.socket.address().await.unwrap().port() as usize
-    }
-}
+pub mod common;
\ No newline at end of file
diff --git a/src/engine/shared.rs b/src/engine/shared.rs
index 2a97b42..e678e92 100644
--- a/src/engine/shared.rs
+++ b/src/engine/shared.rs
@@ -1,26 +1,26 @@
 use crate::{
     config::Config,
     crypto::CryptoCore,
-    engine::{Hash, TimeSource},
+    engine::common::Hash,
     error::Error,
     table::ClaimTable,
     traffic::{TrafficEntry, TrafficStats},
     types::{Address, RangeList},
-    util::{Duration, MsgBuffer}
+    util::{Duration, MsgBuffer, TimeSource},
 };
 use parking_lot::Mutex;
 use std::{
     collections::HashMap,
     io::{self, Write},
     net::SocketAddr,
-    sync::Arc
+    sync::Arc,
 };
 
-use super::PeerData;
+use super::common::PeerData;
 
 #[derive(Clone)]
 pub struct SharedPeerCrypto {
-    peers: Arc<Mutex<HashMap<SocketAddr, Option<Arc<CryptoCore>>, Hash>>>
+    peers: Arc<Mutex<HashMap<SocketAddr, Option<Arc<CryptoCore>>, Hash>>>,
 }
 
 impl SharedPeerCrypto {
@@ -49,7 +49,7 @@ impl SharedPeerCrypto {
     pub fn load(&mut self) {
         // TODO sync if needed
     }
-    
+
     pub fn get_snapshot(&self) -> HashMap<SocketAddr, Option<Arc<CryptoCore>>, Hash> {
         self.peers.lock().clone()
     }
@@ -59,10 +59,9 @@ impl SharedPeerCrypto {
     }
 }
 
-
 #[derive(Clone)]
 pub struct SharedTraffic {
-    traffic: Arc<Mutex<TrafficStats>>
+    traffic: Arc<Mutex<TrafficStats>>,
 }
 
 impl SharedTraffic {
@@ -119,10 +118,9 @@ impl SharedTraffic {
     }
 }
 
-
 #[derive(Clone)]
 pub struct SharedTable<TS: TimeSource> {
-    table: Arc<Mutex<ClaimTable<TS>>>
+    table: Arc<Mutex<ClaimTable<TS>>>,
 }
 
 impl<TS: TimeSource> SharedTable<TS> {
diff --git a/src/engine/socket_thread.rs b/src/engine/socket_thread.rs
index a4a6b6a..946cca4 100644
--- a/src/engine/socket_thread.rs
+++ b/src/engine/socket_thread.rs
@@ -1,14 +1,14 @@
 use super::{
     shared::{SharedPeerCrypto, SharedTable, SharedTraffic},
-    SPACE_BEFORE,
+    common::SPACE_BEFORE,
 };
 
 use crate::{
     beacon::BeaconSerializer,
     config::{DEFAULT_PEER_TIMEOUT, DEFAULT_PORT},
-    crypto::{is_init_message, InitResult, InitState, MessageResult},
-    device::Type,
-    engine::{addr_nice, resolve, Hash, PeerData},
+    crypto::{is_init_message, InitResult, InitState, MessageResult, Crypto},
+    device::{Type, Device},
+    engine::common::{Hash, PeerData},
     error::Error,
     messages::{
         AddrList, NodeInfo, PeerInfo, MESSAGE_TYPE_CLOSE, MESSAGE_TYPE_DATA, MESSAGE_TYPE_KEEPALIVE,
@@ -17,8 +17,8 @@ use crate::{
     net::{mapped_addr, Socket},
     port_forwarding::PortForwarding,
     types::{Address, NodeId, Range, RangeList},
-    util::{MsgBuffer, StatsdMsg, Time, TimeSource},
-    Config, Crypto, Device, Protocol,
+    util::{addr_nice, resolve, MsgBuffer, StatsdMsg, Time, TimeSource},
+    Config, Protocol,
 };
 use rand::{random, seq::SliceRandom, thread_rng};
 use smallvec::{smallvec, SmallVec};
diff --git a/src/main.rs b/src/main.rs
index 745a5ba..1f81d3a 100644
--- a/src/main.rs
+++ b/src/main.rs
@@ -47,7 +47,7 @@ use std::{
 };
 
 use crate::{
-    engine::GenericCloud,
+    engine::common::GenericCloud,
     config::{Args, Command, Config, DEFAULT_PORT},
     crypto::Crypto,
     device::{Device, TunTapDevice, Type},
diff --git a/src/tests/common.rs b/src/tests/common.rs
index e61005d..b61c625 100644
--- a/src/tests/common.rs
+++ b/src/tests/common.rs
@@ -15,7 +15,7 @@ use std::{
 pub use crate::{
     config::{Config, CryptoConfig},
     device::{MockDevice, Type},
-    engine::GenericCloud,
+    engine::common::GenericCloud,
     net::MockSocket,
     payload::{Frame, Packet, Protocol},
     types::Range,
diff --git a/src/traffic.rs b/src/traffic.rs
index 59fdeae..00b1829 100644
--- a/src/traffic.rs
+++ b/src/traffic.rs
@@ -10,7 +10,7 @@ use std::{
 };
 
 use super::{
-    engine::{Hash, STATS_INTERVAL},
+    engine::common::{Hash, STATS_INTERVAL},
     types::Address,
     util::{addr_nice, Bytes}
 };