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diff --git a/Cargo.toml b/Cargo.toml
index cff96ef..20204e5 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -2,3 +2,15 @@
 name = "collarmc"
 version = "0.1.0"
 edition = "2021"
+
+[dependencies]
+dashmap = "6.1.0"
+futures-util = "0.3.30"
+serde = { version = "1.0.210", features = ["derive"] }
+serde_json = "1.0.128"
+serde_repr = "0.1.19"
+tokio = { version = "1.40", features = ["full"] }
+tokio-tungstenite = "0.24"
+tracing = "0.1.40"
+tracing-subscriber = "0.3.18"
+uuid = { version = "1.10.0", features = ["serde", "v4"] }
diff --git a/src/main.rs b/src/main.rs
new file mode 100644
index 0000000..96f3a89
--- /dev/null
+++ b/src/main.rs
@@ -0,0 +1,148 @@
+use std::{env, io::Error, sync::OnceLock};
+use futures_util::{stream::SplitSink, SinkExt, StreamExt};
+use tokio::net::{TcpListener, TcpStream};
+use tokio_tungstenite::{tungstenite::Message, WebSocketStream};
+
+#[repr(i8)]
+#[derive(Debug, serde_repr::Deserialize_repr, serde_repr::Serialize_repr)]
+enum Dimension {
+	End = 1,
+	Overworld = 0,
+	Nether = -1,
+}
+
+#[derive(Debug, serde::Deserialize, serde::Serialize)]
+struct UserPosition {
+	id: uuid::Uuid,
+	dimension: Dimension,
+	x: f64,
+	y: f64,
+	z: f64,
+}
+
+#[derive(Debug, serde::Deserialize, serde::Serialize)]
+struct UserJoin {
+	id: uuid::Uuid,
+	secret: String,
+}
+
+#[derive(Debug)]
+struct Peer {
+	id: uuid::Uuid,
+	tx: SplitSink<WebSocketStream<TcpStream>, Message>,
+}
+
+type Store = dashmap::DashMap<String, Vec<Peer>>;
+
+fn store() -> &'static Store {
+	static STORE: OnceLock<Store> = OnceLock::new();
+	STORE.get_or_init(Store::default)
+}
+
+#[tokio::main]
+async fn main() -> Result<(), Error> {
+	tracing_subscriber::fmt().init();
+
+	tracing::info!("some uuid: {}", uuid::Uuid::new_v4());
+	tracing::info!("some packet: {}", serde_json::to_string(&UserPosition {
+		id: uuid::Uuid::new_v4(),
+		dimension: Dimension::Overworld,
+		x: 0.0,
+		y: 0.0,
+		z: 0.0,
+	}).unwrap());
+
+	let addr = env::args().nth(1).unwrap_or_else(|| "127.0.0.1:8080".to_string());
+
+	// Create the event loop and TCP listener we'll accept connections on.
+	let try_socket = TcpListener::bind(&addr).await;
+	let listener = try_socket.expect("Failed to bind");
+	tracing::info!("Listening on: {}", addr);
+
+	while let Ok((stream, _)) = listener.accept().await {
+		tokio::spawn(accept_connection(stream));
+	}
+
+	Ok(())
+}
+
+async fn accept_connection(stream: TcpStream) {
+	let addr = stream.peer_addr().expect("connected streams should have a peer address");
+	tracing::info!("Peer address: {}", addr);
+
+	let ws_stream = tokio_tungstenite::accept_async(stream)
+		.await
+		.expect("Error during the websocket handshake occurred");
+
+	tracing::info!("New WebSocket connection: {}", addr);
+
+	let (write, mut read) = ws_stream.split();
+
+	// TODO can we get the secret from http headers or maybe request path? this is super annoying
+
+	let Some(Ok(msg)) = read.next().await else {
+		tracing::warn!("peer didn't send join packet, dropping {addr}");
+		return;
+	};
+
+	let Message::Text(txt) = msg else {
+		tracing::warn!("join packet isn't a text message, dropping {addr}");
+		return;
+	};
+
+	let Ok(join_packet) = serde_json::from_str::<UserJoin>(&txt) else {
+		tracing::error!("failed parsing join packet, dropping {addr}");
+		return;
+	};
+
+	let peer = Peer {
+		id: join_packet.id,
+		tx: write,
+	};
+
+	match store().get_mut(&join_packet.secret) {
+		Some(mut v) => v.value_mut().push(peer),
+		None => { store().insert(join_packet.secret.clone(), vec![peer]); },
+	}
+
+	while let Some(res) = read.next().await {
+		match res {
+			Ok(msg) => {
+				let Message::Text(ref txt) = msg else {
+					tracing::error!("peer {addr} sent non-json packet, dropping");
+					break;
+				};
+
+				// just validate incoming packet
+				let Ok(_packet) = serde_json::from_str::<UserPosition>(txt) else {
+					tracing::error!("peer {addr} sent invalid json, dropping.\n{txt}");
+					break;
+				};
+
+				let Some(mut others) = store().get_mut(&join_packet.secret) else {
+					tracing::error!("session closed, dropping peer {addr}");
+					break;
+				};
+
+				for usr in others.value_mut() {
+					if usr.id == join_packet.id { continue } // dont send back to self
+					if let Err(e) = usr.tx.send(msg.clone()).await {
+						tracing::error!("failed sending position to {}: {e}", usr.id);
+					}
+				}
+			},
+			Err(e) => {
+				tracing::error!("error receiving from peer {addr}: {e}");
+				break;
+			},
+		}
+	}
+
+	tracing::info!("peer {addr} disconnected");
+
+	if let Some(mut store) = store().get_mut(&join_packet.secret) {
+		store.value_mut().retain(|x| x.id != join_packet.id);
+	} else {
+		tracing::error!("failed accessing store to drop {addr}'s channel");
+	}
+}