diff --git a/.gitignore b/.gitignore
index ed9349b..543ffdb 100644
Binary files a/.gitignore and b/.gitignore differ
diff --git a/cmd/Client.go b/cmd/Client.go
index 0916c68..5583ea3 100644
--- a/cmd/Client.go
+++ b/cmd/Client.go
@@ -1,22 +1,49 @@
 package cmd // code.bitsetter.de/fun/gosl/cmd
 
 import (
+	"encoding/gob"
 	"fmt"
+	"net"
+	"os"
+	"strconv"
 
 	"github.com/spf13/cobra"
+
+	"code.bitsetter.de/fun/gosl/data"
 )
 
 var cmdClient = &cobra.Command{
-	Use:   "client",
+	Use:   "client <IP> <NUMBER>",
 	Short: "Runs Gosl as a client",
 	Long:  "Runs Gosl as a client",
-	//	Run:
+	Run:   runClient,
+}
+
+//func init() {
+//	cmdClient.Run = runClient
+//}
+
+func register(con net.Conn, id int) error {
+	w, h := data.TestNC()
+	enc := gob.NewEncoder(con) // Encoder
+	err := enc.Encode(handshake{ID: id, H: h, W: w})
+	return err
 }
 
 func runClient(cmd *cobra.Command, args []string) {
 	fmt.Println("running client ...")
-}
 
-func init() {
-	cmdClient.Run = runClient
+	if len(args) < 2 {
+		fmt.Println("Params: <IP> <NUMBER>")
+		os.Exit(1)
+	}
+	server := args[0]
+	id, _ := strconv.Atoi(args[1])
+
+	con, err := net.Dial("tcp", server+":"+strconv.Itoa(SERVERPORT))
+	if err != nil {
+		fmt.Println("connect error:", err)
+	}
+
+	register(con, id)
 }
diff --git a/cmd/Cmd.go b/cmd/Cmd.go
index b63a08b..e28f82e 100644
--- a/cmd/Cmd.go
+++ b/cmd/Cmd.go
@@ -6,6 +6,10 @@ import (
 	"github.com/spf13/cobra"
 )
 
+const SERVERPORT int = 8989
+
+type handshake struct{ ID, W, H int }
+
 var cmdGosl = &cobra.Command{
 	Use:   "gosl [command]",
 	Short: "Run a gosl instance",
diff --git a/cmd/Server.go b/cmd/Server.go
index 23a031e..57e9ba3 100644
--- a/cmd/Server.go
+++ b/cmd/Server.go
@@ -5,10 +5,10 @@ import (
 	"fmt"
 	"log"
 	"net"
+	"sort"
+	"time"
 
 	"github.com/spf13/cobra"
-
-	"code.bitsetter.de/fun/gosl/data"
 )
 
 var cmdServer = &cobra.Command{
@@ -22,36 +22,67 @@ gosl.json for configuration (Port/Adress, Level)
 	//	Run:
 }
 
-func handleConn(conn *net.TCPConn) {
-	log.Println("Got a connection from: ", conn.RemoteAddr().String())
+type goslClient struct {
+	con *net.TCPConn
+	id  int
+	w   int
+	h   int
+}
 
-	gobd := gob.NewDecoder(conn)
-	var h data.Handshake
-	gobd.Decode(&h)
-	log.Println(h)
-	conn.Close()
+var TotalWidth int = 0
+var clients map[int]goslClient = make(map[int]goslClient)
+var clientKeys []int = make([]int, 100)
+
+func handleConn(conn *net.TCPConn) {
+	var hs handshake
+
+	log.Println("Got a connection!")
+
+	// handshake
+	dec := gob.NewDecoder(conn) // Decoder
+	dec.Decode(&hs)
+	log.Println("Got client! ID:", hs.ID, "dimensions:", hs.W, hs.H)
+	clientKeys = append(clientKeys, hs.ID)
+	sort.Ints(clientKeys)
+	clients[hs.ID] = goslClient{con: conn, id: hs.ID, w: hs.W, h: hs.H}
+	TotalWidth += hs.W
+
+	// conn.Close()
+}
+
+func serveClients() {
+	for { // while true
+
+		for _, k := range clientKeys {
+			id, client := k, clients[k]
+			if id > 0 {
+				fmt.Println("ID:", id, "Client:", client)
+			}
+		}
+		time.Sleep(time.Second)
+
+	}
 }
 
 func runServer(cmd *cobra.Command, args []string) {
 	fmt.Println("running server ...")
 
-	listener, err := net.ListenTCP("tcp", &net.TCPAddr{Port: 8989})
+	listener, err := net.ListenTCP("tcp", &net.TCPAddr{Port: SERVERPORT})
 	if err != nil {
 		log.Fatal(err)
 		panic("Could not open Listener")
 	}
 	defer listener.Close()
+	go serveClients()
 	for {
 		conn, err := listener.AcceptTCP()
 		if err != nil {
 			log.Fatal(err)
 			panic("Listener could not accept connection!")
 		}
-
 		go handleConn(conn)
 	}
 
-	data.TestNC()
 }
 
 func init() {
diff --git a/data/Screen.go b/data/Screen.go
index 5479060..a0af029 100644
--- a/data/Screen.go
+++ b/data/Screen.go
@@ -13,15 +13,15 @@ type Screen struct {
 	data []rune
 }
 
-func TestNC() {
+func TestNC() (int, int) {
 	win, err := goncurses.Init()
 	if err != nil {
 		log.Fatal(err)
 		os.Exit(1)
 	}
 	win.Clear()
-	w, h := win.MaxYX()
+	h, w := win.MaxYX()
 	goncurses.End()
-	fmt.Printf("screen: %d x %d", w, h)
-
+	fmt.Printf("screen: %d x %d\n", w, h)
+	return w, h
 }
diff --git a/gosl b/gosl
index 9e83a8e..96823ef 100755
Binary files a/gosl and b/gosl differ