diff --git a/Cargo.toml b/Cargo.toml
index ab361ef..5bca3f4 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -8,6 +8,9 @@ edition = "2018"
 name = "patch"
 path = "src/patch/main.rs"
 
+[[bin]]
+name = "login"
+path = "src/login/main.rs"
 
 [dependencies]
 futures-preview = "=0.3.0-alpha.16"
diff --git a/src/login/main.rs b/src/login/main.rs
new file mode 100644
index 0000000..9aab57e
--- /dev/null
+++ b/src/login/main.rs
@@ -0,0 +1,110 @@
+use std::net::{TcpListener, SocketAddr, Ipv4Addr};
+use std::net;
+use std::thread;
+
+use mio::{Events, Poll, Token, Ready, PollOpt};
+use rand::{Rng, RngCore};
+
+use libpso::{PacketParseError, PSOPacket};
+use libpso::packet::login::*;
+use libpso::crypto::{CipherError, PSOCipher, NullCipher};
+use libpso::crypto::bb::PSOBBCipher;
+
+use elseware::common::{send_packet, recv_packet, PacketNetworkError};
+use elseware::common::cipherkeys::{ELSEWHERE_PRIVATE_KEY, ELSEWHERE_PARRAY};
+
+const LOGIN_PORT: u16 = 12000;
+const CHARACTER_PORT: u16 = 12001;
+
+
+struct Client {
+    running: bool,
+    socket: mio::tcp::TcpStream,
+    cipher_in: Box<dyn PSOCipher>,
+    cipher_out: Box<dyn PSOCipher>,
+}
+
+impl Client {
+    fn new(socket: net::TcpStream) -> Client {
+        Client {
+            running: true,
+            socket: mio::tcp::TcpStream::from_stream(socket).expect("could not convert socket to nonblocking"),
+            cipher_in: Box::new(NullCipher {}),
+            cipher_out: Box::new(NullCipher {}),
+        }
+    }
+
+    fn send(&mut self, pkt: &dyn PSOPacket) {
+        match send_packet(&mut self.socket, &mut *self.cipher_out, pkt) {
+            Ok(_) => {
+                println!("[login] send ({:?}): {:?}", self.socket, pkt);
+            },
+            Err(err) => {
+                println!("[login] error sending packet to {:?}: {:?}", self.socket, err);
+                self.running = false;
+            }
+        }
+    }
+}
+
+fn client_loop(mut client: Client) {
+    let poll = mio::Poll::new().unwrap();
+    poll.register(&client.socket, Token(0), Ready::readable(), PollOpt::edge()).unwrap();
+
+    let mut events = Events::with_capacity(1024);
+    loop {
+        poll.poll(&mut events, None).unwrap();
+
+        for event in &events{
+            println!("event! {:?}", event);
+            if event.token() == Token(0) {
+                loop {
+                    let pkt = recv_packet(&mut client.socket, &mut *client.cipher_in);
+                    println!("{:?}", pkt);
+
+                    match pkt {
+                        Ok(pkt) => {
+                            //handle_packet(&mut client, pkt).expect("could not handle packet");
+                            println!("[login] pkt: {:?}", pkt);
+                        },
+                        Err(err) => {
+                            println!("[login] error recv-ing packet with {:?}: {:?}", client.socket, err);
+                            break;
+                        }
+                    }
+                }
+            }
+        }
+    }
+}
+
+fn new_client(socket: net::TcpStream) {
+    let mut client = Client::new(socket);
+    let mut rng = rand::thread_rng();
+
+    let mut server_key = [0u8; 48];
+    let mut client_key = [0u8; 48];
+    rng.fill(&mut server_key[..]);
+    rng.fill(&mut client_key[..]);
+    let welcome = LoginWelcome::new(server_key, client_key);
+    client.send(&welcome);
+    client.cipher_in = Box::new(PSOBBCipher::new(ELSEWHERE_PARRAY, ELSEWHERE_PRIVATE_KEY, client_key));
+    client.cipher_out = Box::new(PSOBBCipher::new(ELSEWHERE_PARRAY, ELSEWHERE_PRIVATE_KEY, server_key));
+    client_loop(client);
+}
+
+fn main() {
+    println!("[login] starting server");
+
+    let listener = TcpListener::bind(&SocketAddr::from((Ipv4Addr::new(0,0,0,0), LOGIN_PORT))).unwrap();
+
+    while let Ok((socket, addr)) = listener.accept() {
+        thread::spawn(move || {
+            println!("[login] accepted connection: {}", addr);
+            new_client(socket);
+        });
+    }
+
+
+    println!("[login] exiting...");
+}