diff --git a/cmd/iface/main.go b/cmd/iface/main.go
index 2dcbf2e..aca887f 100644
--- a/cmd/iface/main.go
+++ b/cmd/iface/main.go
@@ -1,8 +1,10 @@
 package main
 
 import (
+	"git.xdrm.io/gws/ws/message"
+	"git.xdrm.io/gws/ws/controller"
 	"time"
-	"git.xdrm.io/gws/ws"
+	"git.xdrm.io/gws/ws/server"
 	"fmt"
 )
 
@@ -12,19 +14,18 @@ func main(){
 	startTime := time.Now().UnixNano()
 
 	/* (1) Bind WebSocket server */
-	serv := ws.CreateServer("0.0.0.0", 4444)
+	serv := server.Create("0.0.0.0", 4444)
 
 	/* (2) Bind default controller */
-	serv.BindDefault(func(client *ws.Client, receiver <-chan ws.Frame, sender chan<- []byte, closer <-chan func()){
+	serv.BindDefault(func(client *controller.ClientInterface, receiver <-chan message.T, sender chan<- message.T, closer <-chan func()){
 
 		fmt.Printf("[default] connected\n")
 		for {
 
 			select {
-				case receivedFrame := <- receiver:
-					fmt.Printf("[default] received '%s'\n", receivedFrame.Payload.Buffer)
-					sender <- receivedFrame.Payload.Buffer
-					fmt.Printf("[default] sent\n")
+				case msg := <- receiver:
+					fmt.Printf("[default] received '%s'\n", msg.Data)
+					sender <- msg
 				case closeFunc := <- closer:
 					fmt.Printf("[default] client with protocol '%s' exited\n", client.Protocol)
 					closeFunc()
@@ -37,14 +38,14 @@ func main(){
 	})
 
 	/* (3) Bind to URI */
-	err := serv.Bind("/channel/./room/./", func(client *ws.Client, receiver <-chan ws.Frame, sender chan<- []byte, closer <-chan func()){
+	err := serv.Bind("/channel/./room/./", func(client *controller.ClientInterface, receiver <-chan message.T, sender chan<- message.T, closer <-chan func()){
 
 		fmt.Printf("[uri] connected\n")
 		for {
 
 			select {
-				case receivedFrame := <- receiver:
-					fmt.Printf("[uri] received '%s'\n", receivedFrame.Payload.Buffer)
+				case msg := <- receiver:
+					fmt.Printf("[uri] received '%s'\n", msg.Data)
 				case closeFunc := <- closer:
 					fmt.Printf("[uri] client with protocol '%s' exited\n", client.Protocol)
 					closeFunc()
diff --git a/ws/client.go b/ws/client.go
deleted file mode 100644
index e1e2639..0000000
--- a/ws/client.go
+++ /dev/null
@@ -1,77 +0,0 @@
-package ws
-
-import (
-	"fmt"
-	"time"
-)
-
-
-
-
-
-
-// asyncReader reads a websocket frame chunk by chunk
-// for a given client
-func (c *Client) asyncReader(s *Server) {
-
-
-	for {
-
-		var startTime int64 = time.Now().UnixNano()
-
-		// Try to read frame header
-		frame, err := ReadFrame(c)
-		if err != nil {
-			fmt.Printf("[read.err] %s\n", err)
-			break
-		}
-
-		var elapsed = float32(time.Now().UnixNano()-startTime)/1e3
-
-		fmt.Printf("+ elapsed: %.3f us\n", elapsed)
-
-		// Trigger data channel
-		c.recvc <- *frame
-
-	}
-
-	fmt.Printf(" - remove client\n")
-
-	// return closing callback
-	c.closec <- func(){
-
-		// Remove client from server
-		s.clientsMutex.Lock()
-		delete(s.clients, c.conn.sock)
-		s.clientsMutex.Unlock()
-
-		// Close socket
-		c.conn.sock.Close()
-
-	}
-
-}
-
-
-
-// asyncWriter writes into websocket
-// and is triggered by client.sendc channel
-func (c *Client) asyncWriter(s *Server){
-
-
-	for payload := range c.sendc {
-
-		// Build Frame
-		f := buildFrame(payload)
-
-		// Send over socket
-		senderr := f.Send(&c.conn)
-		if senderr != nil {
-			fmt.Printf("Writing error: %s\n", senderr)
-		}
-
-
-	}
-
-
-}
\ No newline at end of file
diff --git a/ws/client/public.go b/ws/client/public.go
new file mode 100644
index 0000000..548e3c7
--- /dev/null
+++ b/ws/client/public.go
@@ -0,0 +1,173 @@
+package client
+
+import (
+	"git.xdrm.io/gws/ws/controller"
+	"git.xdrm.io/gws/ws/message"
+	"git.xdrm.io/gws/upgrader"
+	"net"
+	"fmt"
+)
+
+
+
+// Create creates a new client
+func Create(s net.Conn, ctl controller.Set, unregister chan <-*T) (*T, error){
+
+	/* (1) Manage UPGRADE request
+	---------------------------------------------------------*/
+	upgrader, err := upgrader.Upgrade(s)
+	if err != nil {
+		s.Close()
+		return nil, fmt.Errorf("Upgrade error: %s\n", err)
+	}
+
+	if upgrader.Response.GetStatusCode() != 101 {
+		s.Close()
+		return nil, fmt.Errorf("Upgrade error (HTTP %d)\n", upgrader.Response.GetStatusCode())
+	}
+
+
+	/* (2) Initialise client
+	---------------------------------------------------------*/
+	/* (1) Get upgrade data */
+	clientURI := upgrader.Request.GetURI()
+	clientProtocol := upgrader.Response.GetProtocol()
+
+	/* (2) Initialise client */
+	instance := &T{
+		IO: ClientIO{
+			Sock: s,
+		},
+
+		iface: &controller.ClientInterface{
+			Protocol:  string(clientProtocol),
+			Arguments: [][]string{ []string{ clientURI } },
+		},
+
+		Ch: ClientChannelSet{
+			Receive: make(chan message.T, 1),
+			Send:    make(chan message.T, 1),
+			Close:   make(chan func(),  1),
+		},
+	}
+
+
+
+	/* (3) Find controller by URI
+	---------------------------------------------------------*/
+	/* (1) Try to find one */
+	controller, arguments := ctl.Match(clientURI);
+
+	/* (2) If nothing found -> error */
+	if controller == nil {
+		return nil, fmt.Errorf("No controller found, no default controller set\n")
+	}
+
+	/* (3) Copy data */
+	instance.controller       = controller
+	instance.iface.Arguments  = arguments
+
+
+
+	/* (4) Launch client routines
+	---------------------------------------------------------*/
+	/* (1) Launch client controller */
+	go instance.controller.Fun(
+		instance.iface,      // pass the client
+		instance.Ch.Receive, // the receiver
+		instance.Ch.Send,    // the sender
+		instance.Ch.Close,   // the closer
+	)
+
+	/* (2) Launch message reader */
+	go instance.reader(unregister)
+
+	/* (3) Launc writer */
+	go instance.writer(unregister)
+
+
+	return instance, nil
+
+}
+
+
+// reader reads and parses messages from the buffer
+func (c *T) reader(unregister chan <-*T){
+
+	fmt.Printf("[reader] start\n");
+
+	for {
+
+		/* (1) Parse message */
+		msg, err := message.Read(c.IO.Sock)
+		if err != nil {
+			fmt.Printf(" [reader] %s\n", err)
+			break
+		}
+		fmt.Printf(" [reader] ok\n");
+
+		/* (2) If CLOSE */
+		if msg.Type == message.CLOSE {
+
+			fmt.Printf(" [reader] CLOSE\n")
+			break
+
+		} else if msg.Type == message.PING {
+
+			fmt.Printf(" [reader] PING\n")
+			msg.Final = true
+			msg.Type = message.PONG
+			c.Ch.Send <- *msg
+			fmt.Printf(" [reader] sent PONG back\n")
+			continue
+
+		}
+
+		/* (3) Dispatch to receiver */
+		c.Ch.Receive <- *msg
+
+	}
+
+	fmt.Printf("[reader] end\n")
+
+	// return closing callback
+	c.Ch.Close <- func(){
+		unregister <- c
+	}
+
+}
+
+
+
+// writer writes into websocket
+// and is triggered by client.ch.send channel
+func (c *T) writer(unregister chan <-*T){
+
+	fmt.Printf("[writer] start\n");
+
+	for message := range c.Ch.Send {
+
+		c.IO.wriMu.Lock()
+
+		err := message.Send(c.IO.Sock)
+
+		c.IO.wriMu.Unlock()
+
+		if err != nil {
+			fmt.Printf(" [writer] %s\n", err)
+			break;
+		}
+
+		fmt.Printf(" [writer] ok\n")
+
+	}
+
+
+	fmt.Printf("[writer] end\n")
+
+	// return closing callback
+	c.Ch.Close <- func(){
+		unregister <- c
+	}
+
+}
\ No newline at end of file
diff --git a/ws/client/types.go b/ws/client/types.go
new file mode 100644
index 0000000..312aab7
--- /dev/null
+++ b/ws/client/types.go
@@ -0,0 +1,29 @@
+package client
+
+import (
+	"git.xdrm.io/gws/ws/controller"
+	"git.xdrm.io/gws/ws/message"
+	"sync"
+	"net"
+)
+
+// Represents a client socket utility (reader, writer, ..)
+type ClientIO struct {
+	Sock   net.Conn
+	wriMu  sync.Mutex
+}
+
+// Represents all channels that need a client
+type ClientChannelSet struct{
+	Receive chan message.T
+	Send    chan message.T
+	Close   chan func()
+}
+
+// Represents a websocket client
+type T struct {
+	IO         ClientIO
+	iface      *controller.ClientInterface
+	controller *controller.T // assigned controller
+	Ch         ClientChannelSet
+}
\ No newline at end of file
diff --git a/ws/controller/public.go b/ws/controller/public.go
new file mode 100644
index 0000000..f34667f
--- /dev/null
+++ b/ws/controller/public.go
@@ -0,0 +1,40 @@
+package controller
+
+
+
+// Match finds a controller for a given URI
+// also it returns the matching string patterns
+func (s *Set) Match(uri string) (*T, [][]string){
+
+	/* (1) Initialise argument list */
+	arguments := [][]string{ []string{ uri } }
+
+
+	/* (2) Try each controller */
+	for _, c := range s.Uri {
+
+		/* 1. If matches */
+		if c.URI.Match(uri) {
+
+			/* Extract matches */
+			match := c.URI.GetAllMatch()
+
+			/* Add them to the 'arg' attribute */
+			arguments = append(arguments, match...)
+
+			/* Mark that we have a controller */
+			return c, arguments
+
+		}
+
+	}
+
+	/* (3) If no controller found -> set default controller */
+	if s.Def != nil {
+		return s.Def, arguments
+	}
+
+	/* (4) If default is NIL, return empty controller */
+	return nil, arguments
+
+}
\ No newline at end of file
diff --git a/ws/controller/types.go b/ws/controller/types.go
new file mode 100644
index 0000000..c970491
--- /dev/null
+++ b/ws/controller/types.go
@@ -0,0 +1,28 @@
+package controller
+
+import (
+	"git.xdrm.io/gws/ws/message"
+	"git.xdrm.io/gws/internal/uri/parser"
+)
+
+// Represents available information about a client
+type ClientInterface struct {
+	Protocol   string      // choosen protocol (Sec-WebSocket-Protocol)
+	Arguments  [][]string  // URI parameters, index 0 is full URI, then matching groups
+	Store      struct{}    // store (for client implementation-specific data)
+}
+
+// Represents a websocket controller callback function
+type Func func(*ClientInterface, <-chan message.T, chan<- message.T, <-chan func())
+
+// Represents a websocket controller
+type T struct {
+	URI    *parser.Scheme // uri scheme
+	Fun    Func // controller function
+}
+
+// Represents a controller set
+type Set struct {
+	Def *T   // default controller
+	Uri []*T // uri controllers
+}
diff --git a/ws/frame.go b/ws/frame.go
deleted file mode 100644
index 172e733..0000000
--- a/ws/frame.go
+++ /dev/null
@@ -1,278 +0,0 @@
-package ws
-
-import (
-	"bufio"
-	"git.xdrm.io/gws/ws/frame/opcode"
-	"encoding/binary"
-	"git.xdrm.io/gws/ws/frame"
-	"fmt"
-	"git.xdrm.io/gws/internal/ws/reader"
-	"net"
-)
-
-
-
-
-// ReadFrame reads the frame from a socket
-func ReadFrame(c *Client) (*Frame, error) {
-
-	f := new(Frame)
-
-	/* (1) Read header
-	---------------------------------------------------------*/
-	err := f.readHeader(c.conn.br)
-	if err != nil {
-		return nil, err
-	}
-
-
-	/* (2) Read payload
-	---------------------------------------------------------*/
-	err = f.readPayload(c.conn.br)
-	if err != nil {
-		return nil, err
-	}
-
-
-	/* (3) Manage OpCode
-	---------------------------------------------------------*/
-	switch( f.Header.Opc ){
-
-		case opcode.CLOSE:
-			fmt.Printf("Opcode: CLOSE\n")
-			return nil, fmt.Errorf("Closed by client\n")
-
-		case opcode.TEXT:
-			fmt.Printf("Opcode: TEXT\n")
-
-		case opcode.BINARY:
-			fmt.Printf("Opcode: BINARY\n")
-
-		case opcode.PING:
-			fmt.Printf("Opcode: PING\n")
-			err = buildPong().Send(&c.conn)
-			if err != nil {
-				return nil, fmt.Errorf("Pong frame: %s\n", err)
-			}
-
-
-		default:
-			fmt.Printf("Opcode: CLOSE\n")
-			buildClose().Send(&c.conn)
-			return nil, fmt.Errorf("Unknown Opcode %x\n", f.Header.Opc)
-
-	}
-
-	return f, nil
-
-}
-
-
-// readHeader reads the frame header
-func (f *Frame) readHeader(br *bufio.Reader) error{
-	var err error
-
-	/* (2) Byte 1: FIN and OpCode */
-	b, err := reader.ReadBytes(br, 1)
-	if err != nil { return err }
-
-	f.Header.Fin = b[0] & 0x80 == 0x80
-	f.Header.Opc = frame.OpCode( b[0] & 0x0f )
-
-	/* (3) Byte 2: Mask and Length[0] */
-	b, err = reader.ReadBytes(br, 1)
-	if err != nil { return err }
-
-	// if mask, byte array not nil
-	if b[0] & 0x80 == 0x80 {
-		f.Header.Msk = []byte{}
-	}
-
-	// payload length
-	f.Payload.Length = uint64( b[0] & 0x7f )
-
-	/* (4) Extended payload */
-	if f.Payload.Length == 127 {
-
-		bx, err := reader.ReadBytes(br, 8)
-		if err != nil { return err }
-
-		f.Payload.Length = binary.BigEndian.Uint64(bx)
-
-	} else if f.Payload.Length == 126 {
-
-		bx, err := reader.ReadBytes(br, 2)
-		if err != nil { return err }
-
-		f.Payload.Length = uint64( binary.BigEndian.Uint16(bx) )
-
-	}
-
-	/* (5) Masking key */
-	if f.Header.Msk != nil {
-
-		bx, err := reader.ReadBytes(br, 4)
-		if err != nil { return err }
-
-		f.Header.Msk = make([]byte, 4)
-		copy(f.Header.Msk, bx)
-
-	}
-
-	// fmt.Printf("    + Header\n")
-	// fmt.Printf("     + FIN:   %t\n", f.Header.Fin)
-	// fmt.Printf("     + OPC:   %x\n", f.Header.Opc)
-	// fmt.Printf("     + MASK?: %t\n", f.Header.Msk != nil)
-	// if f.Header.Msk != nil {
-	// 	fmt.Printf("     + MASK:  %x\n", f.Header.Msk)
-	// }
-	// fmt.Printf("     + LEN:   %d\n", f.Payload.Length)
-
-	return nil
-
-}
-
-
-// readPayload reads the frame payload
-func (f *Frame) readPayload(br *bufio.Reader) error{
-
-	/* (1) Read payload */
-	b, err := reader.ReadBytes(br, int(f.Payload.Length) )
-	if err != nil { return fmt.Errorf("Cannot read payload (%s)", err) }
-
-	f.Payload.Buffer = make([]byte, 0, f.Payload.Length)
-
-	/* (2) Unmask payload */
-	if len(f.Header.Msk) == 4 {
-
-
-		for i, b := range b{
-
-			mi := i % 4 // mask index
-
-			f.Payload.Buffer = append(f.Payload.Buffer, b ^ f.Header.Msk[mi])
-
-		}
-
-	}
-
-	// fmt.Printf("    + Payload\n")
-	// fmt.Printf("     + Read:  %d\n", len(f.Payload.Buffer))
-
-	return nil
-
-}
-
-
-
-
-
-// buildFrame builds a frame from a payload buffer
-// (as []byte)
-func buildFrame(b []byte) *Frame {
-
-	return &Frame{
-
-		Header: frame.Header{
-			Fin: true,
-			Opc: opcode.TEXT,
-			Msk: nil,
-		},
-
-		Payload: frame.Payload{
-			Buffer: b,
-			Length: uint64(len(b)),
-		},
-
-	}
-
-}
-
-
-// buildClose builds a closing frame
-func buildClose() *Frame{
-	return &Frame{
-
-		Header: frame.Header{
-			Fin: true,
-			Opc: opcode.CLOSE,
-			Msk: nil,
-		},
-
-		Payload: frame.Payload{
-			Buffer: []byte{},
-			Length: 0,
-		},
-
-	}
-}
-
-
-
-// buildPong builds a PONG frame (responding to PING frame)
-func buildPong() *Frame{
-	return &Frame{
-
-		Header: frame.Header{
-			Fin: true,
-			Opc: opcode.PONG,
-			Msk: nil,
-		},
-
-		Payload: frame.Payload{
-			Buffer: []byte{},
-			Length: 0,
-		},
-
-	}
-}
-
-
-// Send sends a frame over a socket
-func (f Frame) Send(c *Conn) error {
-
-	frameHeader := make([]byte, 0, maxHeaderLength)
-
-	/* (1) Byte 0 : FIN + opcode */
-	frameHeader = append(frameHeader, 0x80 | byte(opcode.TEXT) )
-
-	/* (2) Get payload length */
-	if f.Payload.Length < 126 { // simple
-
-		frameHeader = append(frameHeader, byte(f.Payload.Length) )
-
-	} else if f.Payload.Length < 0xffff { // extended: 16 bits
-
-
-		frameHeader = append(frameHeader, 126)
-
-		buf := make([]byte, 2)
-		binary.BigEndian.PutUint16(buf, uint16(f.Payload.Length))
-		frameHeader = append(frameHeader, buf...)
-
-	} else if f.Payload.Length < 0xffffffffffffffff { // extended: 64 bits
-
-		frameHeader = append(frameHeader, 127)
-
-		buf := make([]byte, 8)
-		binary.BigEndian.PutUint64(buf, f.Payload.Length)
-		frameHeader = append(frameHeader, buf...)
-
-	}
-
-	/* (3) Add payload */
-	writeBuffer := net.Buffers{frameHeader, f.Payload.Buffer[:f.Payload.Length]}
-	fmt.Printf("[send]\n")
-	_, err := writeBuffer.WriteTo(c.sock)
-	fmt.Printf("[/send] ")
-	if err != nil { return err }
-
-
-	// fmt.Printf("    + Header\n")
-	// fmt.Printf("     + FIN:   %t\n", f.Header.Fin)
-	// fmt.Printf("     + OPC:   %x\n", f.Header.Opc)
-	// fmt.Printf("     + MASK?: %t\n", f.Header.Msk != nil)
-	// fmt.Printf("     + LEN:   %d\n", f.Payload.Length)
-
-	return nil
-}
\ No newline at end of file
diff --git a/ws/message/public.go b/ws/message/public.go
new file mode 100644
index 0000000..8d2ac46
--- /dev/null
+++ b/ws/message/public.go
@@ -0,0 +1,183 @@
+package message
+
+import (
+	"net"
+	"encoding/binary"
+	"fmt"
+)
+
+
+
+
+// Read reads a message form reader
+func Read(socket net.Conn) (*T, error){
+
+	m := new(T)
+
+	var buffer []byte;
+
+	/* (2) Byte 1: FIN and OpCode */
+	buffer = make([]byte, 1)
+	_, err := socket.Read(buffer)
+	if err != nil { return nil, err }
+
+
+	m.Final = bool( buffer[0] & 0x80 == 0x80 )
+	m.Type = byte( buffer[0] & 0x0f )
+	fmt.Printf(" + read\n")
+	fmt.Printf("   - final: %t\n", m.Final)
+	fmt.Printf("   - Type: %x\n", m.Type)
+
+	/* (3) Byte 2: Mask and Length[0] */
+	buffer = make([]byte, 1)
+	_, err = socket.Read(buffer)
+	if err != nil { return nil, err }
+
+	// if mask, byte array not nil
+	var mask []byte = nil;
+	if buffer[0] & 0x80 == 0x80 {
+		mask = make([]byte, 0)
+	}
+	fmt.Printf("   - has mask ? %t\n", mask != nil)
+
+	// payload length
+	m.Size = uint( buffer[0] & 0x7f )
+	fmt.Printf("   - size/flag: %d\n", m.Size)
+
+	/* (4) Extended payload */
+	if m.Size == 127 {
+
+		buffer := make([]byte, 8)
+		_, err := socket.Read(buffer)
+		if err != nil { return nil, err }
+
+		m.Size = uint( binary.BigEndian.Uint64(buffer) )
+
+	} else if m.Size == 126 {
+
+		buffer := make([]byte, 2)
+		_, err := socket.Read(buffer)
+		if err != nil { return nil, err }
+
+		m.Size = uint( binary.BigEndian.Uint16(buffer) )
+
+	}
+
+	fmt.Printf("   - final size: %d\n", m.Size)
+
+	/* (5) Masking key */
+	if mask != nil {
+
+		buffer := make([]byte, 4)
+		_, err := socket.Read(buffer)
+		if err != nil { return nil, err }
+
+		mask = make([]byte, 4)
+		copy(mask, buffer)
+
+	}
+	fmt.Printf("   - mask: %x\n", mask)
+
+	/* (6) Read payload */
+	buffer = make([]byte, int(m.Size))
+	_, err = socket.Read(buffer)
+	if err != nil { return nil, fmt.Errorf("Cannot read payload (%s)", err) }
+
+	m.Data = make([]byte, 0, m.Size)
+	fmt.Printf("   - raw data:      '%s'\n", buffer)
+
+	/* (7) Unmask payload */
+	if len(mask) == 4 {
+
+		for i, b := range buffer{
+
+			mi := i % 4 // mask index
+
+			m.Data = append(m.Data, b ^ mask[mi])
+
+		}
+
+	}
+
+
+	fmt.Printf("   - unmasked data: '%s'\n", m.Data)
+
+	return m, nil
+
+}
+
+
+
+
+// Send sends a frame over a socket
+func (m T) Send(socket net.Conn) error {
+
+	var bi uint = 0;
+
+	buffer := make([]byte, 0)
+	fmt.Printf(" + write\n")
+	fmt.Printf("   - final: %t\n", m.Final)
+	fmt.Printf("   - type:  %x\n", m.Type)
+
+	/* (1) Byte 0 : FIN + opcode */
+	buffer = append(buffer, 0x80 | TEXT )
+	fmt.Printf("     > byte[%d]: '%x'\n", bi, 0x80 | TEXT); bi++
+	fmt.Printf("     ? '%x'\n", buffer[bi-1]);
+
+	/* (2) Get payload length */
+	if m.Size < 126 { // simple
+
+		buffer = append(buffer, byte(m.Size) )
+		fmt.Printf("   - size:  %d\n", m.Size)
+		fmt.Printf("     > byte[%d]: '%.2x'\n", bi, m.Size); bi++
+		fmt.Printf("     ? '%.2x'\n", buffer[bi-1]);
+
+	} else if m.Size < 0xffff { // extended: 16 bits
+
+		buffer = append(buffer, 126)
+
+		buf := make([]byte, 2)
+		binary.BigEndian.PutUint16(buf, uint16(m.Size))
+		buffer = append(buffer, buf...)
+		fmt.Printf("   - size flag:  %d\n", 126)
+		fmt.Printf("     > byte[%d]: '%.2x'\n", bi, 126); bi++
+		fmt.Printf("     ? '%x'\n", buffer[bi-1]);
+		fmt.Printf("   - size:  %d\n", m.Size)
+		fmt.Printf("     > byte[%d.%d]: '%4.x'\n", bi, bi+2-1, m.Size); bi+=2
+		fmt.Printf("     ? '%.4x'\n", buffer[bi-2:bi]);
+
+	} else if m.Size < 0xffffffffffffffff { // extended: 64 bits
+
+		buffer = append(buffer, 127)
+
+		buf := make([]byte, 8)
+		binary.BigEndian.PutUint64(buf, uint64(m.Size))
+		buffer = append(buffer, buf...)
+		fmt.Printf("   - size flag:  %d\n", 127)
+		fmt.Printf("     > byte[%d]: '%.2x'\n", bi, 127); bi++
+		fmt.Printf("     ? '%x'\n", buffer[bi-1]);
+		fmt.Printf("   - size:  %d\n", m.Size)
+		fmt.Printf("     > byte[%d.%d]: '%16.x'\n", bi, bi+8-1, m.Size); bi+=8
+		fmt.Printf("     ? '%.16x'\n", buffer[bi-8:bi]);
+
+	}
+
+	/* (3) Write header */
+	// fmt.Printf("   - header:  %x\n", buffer)
+	// _, err := socket.Write(buffer)
+	// if err != nil { return err }
+
+	/* (4) Add payload */
+	buffer = append(buffer, m.Data...)
+	fmt.Printf("   - data:  '%s'\n", m.Data)
+	fmt.Printf("   - data:  %x\n", m.Data)
+	fmt.Printf("     > byte[%d.%d]: '%x'\n", bi, bi+m.Size-1, buffer[bi:]); bi+=m.Size
+
+	/* (4) Send message */
+	nbw, err := socket.Write(buffer)
+	fmt.Printf("  - buffer: '%x'\n", buffer)
+	fmt.Printf("  - written: %d / %d\n", nbw, bi)
+	if err != nil { return err }
+
+	return nil
+}
\ No newline at end of file
diff --git a/ws/message/types.go b/ws/message/types.go
new file mode 100644
index 0000000..27641af
--- /dev/null
+++ b/ws/message/types.go
@@ -0,0 +1,20 @@
+package message
+
+
+// Lists websocket message types
+const (
+	TEXT    = 0x1
+	BINARY  = 0x2
+	CLOSE   = 0x8
+	PING    = 0x9
+	PONG    = 0xa
+);
+
+
+// Represents a websocket message
+type T struct {
+	Type  byte
+	Data  []byte
+	Size  uint
+	Final bool
+}
\ No newline at end of file
diff --git a/ws/private.go b/ws/private.go
deleted file mode 100644
index 2ad5d28..0000000
--- a/ws/private.go
+++ /dev/null
@@ -1,90 +0,0 @@
-package ws
-
-import (
-	"bufio"
-	"git.xdrm.io/gws/upgrader"
-	"net"
-)
-
-// dispatch finds a controller for a client
-func (s *Server) dispatch(sock net.Conn, u *upgrader.T){
-
-	/* (1) Build client
-	---------------------------------------------------------*/
-	/* (1) Get request URI */
-	uri := u.Request.GetURI()
-
-
-	client := &Client{
-		conn: Conn{
-			sock: sock,
-			br: bufio.NewReader(sock),
-		},
-		Arguments: [][]string{ []string{ uri } },
-		Protocol:  string(u.Response.GetProtocol()),
-		recvc:     make(chan Frame,  maxChannelBufferLength),
-		sendc:     make(chan []byte, maxChannelBufferLength),
-		closec:    make(chan func(), maxChannelBufferLength),
-	}
-
-
-	/* (2) Search for a controller (from URI)
-	---------------------------------------------------------*/
-	var controller *Controller = nil
-
-	/* (1) Iterate over URI controllers */
-	for _, c := range s.controllers {
-
-		/* (2) If matches */
-		if c.uri.Match(uri) {
-
-			/* (3) Extract matches */
-			match := c.uri.GetAllMatch()
-
-			/* (4) Add them to the 'arg' attribute */
-			client.Arguments = append(client.Arguments, match...)
-
-			/* (5) Mark that we have a controller */
-			controller = c
-			break
-
-		}
-
-	}
-
-	/* (6) If no controller found -> try default */
-	if controller == nil && s.defaultController != nil {
-		controller = s.defaultController
-	}
-
-	/* (7) If no controller -> close socket */
-	if controller == nil {
-		sock.Close()
-		return
-	}
-
-
-	/* (3) Manage client+controller
-	---------------------------------------------------------*/
-	/* (1) Add controller to client */
-	client.Controller = controller
-
-	/* (2) Add client to server */
-	s.clientsMutex.Lock()
-	s.clients[sock] = client
-	s.clientsMutex.Unlock()
-
-	/* (3) Bind controller */
-	go controller.fun(client, client.recvc, client.sendc, client.closec)
-
-	/* (4) Launch asynchronous frame writer */
-	go client.asyncWriter(s)
-
-	/* (5) Run asynchronous frame reader */
-	go client.asyncReader(s)
-
-}
-
-
-
-
diff --git a/ws/public.go b/ws/public.go
deleted file mode 100644
index cc32c97..0000000
--- a/ws/public.go
+++ /dev/null
@@ -1,19 +0,0 @@
-package ws
-
-import ()
-import "net"
-
-
-
-// CreateServer creates a server for a specific HOST and PORT
-func CreateServer(host string, port uint16) *Server{
-
-	return &Server{
-		addr:              []byte(host),
-		port:              port,
-		clients:           make(map[net.Conn]*Client, 0),
-		defaultController: nil,
-		controllers:       make([]*Controller, 0),
-	}
-
-}
diff --git a/ws/server.go b/ws/server.go
deleted file mode 100644
index 69fd935..0000000
--- a/ws/server.go
+++ /dev/null
@@ -1,91 +0,0 @@
-package ws
-
-import (
-	"git.xdrm.io/gws/upgrader"
-	"net"
-	"fmt"
-	"git.xdrm.io/gws/internal/uri/parser"
-)
-
-
-// BindDefault binds a default controller
-// it will be called if the URI does not
-// match another controller
-func (s *Server) BindDefault(c ControllerFunc){
-
-	s.defaultController = &Controller{
-		uri: nil,
-		fun: c,
-	}
-}
-
-// Bind binds a controller to an URI scheme
-func (s *Server) Bind(uri string, c ControllerFunc) error {
-
-	/* (1) Build URI parser */
-	uriScheme, err := parser.Build(uri)
-	if err != nil { return fmt.Errorf("Cannot build URI: %s", err) }
-
-	/* (2) Create controller */
-	s.controllers = append(s.controllers, &Controller{
-		uri: uriScheme,
-		fun: c,
-	} )
-
-	return nil
-
-}
-
-
-// Launch launches the websocket server
-func (s *Server) Launch() error {
-
-	var err error
-
-	/* (1) Listen socket
-	---------------------------------------------------------*/
-	/* (1) Build full url */
-	url := fmt.Sprintf("%s:%d", s.addr, s.port)
-
-	/* (3) Bind listen socket */
-	s.sock, err = net.Listen("tcp", url)
-	if err != nil {
-		return fmt.Errorf("Listen socket: %s", err)
-	}
-	defer s.sock.Close()
-
-	fmt.Printf("+ listening on %s\n", url)
-
-
-	/* (2) For each incoming connection (client)
-	---------------------------------------------------------*/
-	for {
-
-		// {1} Wait for connection //
-		sock, err := s.sock.Accept()
-		fmt.Printf(" + new client\n")
-		if err != nil {
-			fmt.Printf(" - error: %s\n", err)
-			continue
-		}
-
-		// {2} Upgrade request //
-		upgrader, err := upgrader.Upgrade(sock)
-		if err != nil {
-			fmt.Printf(" - upgrade error: %s\n", err)
-			sock.Close()
-			continue
-		}
-		if upgrader.Response.GetStatusCode() != 101 {
-			fmt.Printf(" - upgrade bad request (status code %d)\n", upgrader.Response.GetStatusCode())
-			sock.Close()
-			continue
-		}
-
-		// {3} Dispatch to controllers //
-		go s.dispatch(sock, upgrader)
-
-
-	}
-
-}
\ No newline at end of file
diff --git a/ws/server/public.go b/ws/server/public.go
new file mode 100644
index 0000000..17e3d37
--- /dev/null
+++ b/ws/server/public.go
@@ -0,0 +1,154 @@
+package server
+
+import (
+	"git.xdrm.io/gws/ws/message"
+	"git.xdrm.io/gws/ws/controller"
+	"git.xdrm.io/gws/ws/client"
+	"net"
+	"fmt"
+	"git.xdrm.io/gws/internal/uri/parser"
+)
+
+// CreateServer creates a server for a specific HOST and PORT
+func Create(host string, port uint16) *T{
+
+	return &T{
+		addr:              []byte(host),
+		port:              port,
+
+		clients:           make(map[net.Conn]*client.T, 0),
+
+		ctl: controller.Set{
+			Def: nil,
+			Uri: make([]*controller.T, 0),
+		},
+
+		ch: ServerChannelSet{
+			register:   make(chan *client.T, 1),
+			unregister: make(chan *client.T, 1),
+			broadcast:  make(chan message.T, 1),
+		},
+	}
+
+}
+
+
+// BindDefault binds a default controller
+// it will be called if the URI does not
+// match another controller
+func (s *T) BindDefault(f controller.Func){
+
+	s.ctl.Def = &controller.T{
+		URI: nil,
+		Fun: f,
+	}
+
+}
+
+
+// Bind binds a controller to an URI scheme
+func (s *T) Bind(uri string, f controller.Func) error {
+
+	/* (1) Build URI parser */
+	uriScheme, err := parser.Build(uri)
+	if err != nil { return fmt.Errorf("Cannot build URI: %s", err) }
+
+	/* (2) Create controller */
+	s.ctl.Uri = append(s.ctl.Uri, &controller.T{
+		URI: uriScheme,
+		Fun: f,
+	} )
+
+	return nil
+
+}
+
+
+// Launch launches the websocket server
+func (s *T) Launch() error {
+
+	var err error
+
+	/* (1) Listen socket
+	---------------------------------------------------------*/
+	/* (1) Build full url */
+	url := fmt.Sprintf("%s:%d", s.addr, s.port)
+
+	/* (2) Bind socket to listen */
+	s.sock, err = net.Listen("tcp", url)
+	if err != nil {
+		return fmt.Errorf("Listen socket: %s", err)
+	}
+
+	defer s.sock.Close()
+
+	fmt.Printf("+ listening on %s\n", url)
+
+	/* (3) Launch scheduler */
+	go s.scheduler()
+
+
+
+	/* (2) For each incoming connection (client)
+	---------------------------------------------------------*/
+	for {
+
+		/* (1) Wait for client */
+		sock, err := s.sock.Accept()
+		if err != nil {
+			break
+		}
+
+		/* (2) Try to create client */
+		cli, err := client.Create(sock, s.ctl, s.ch.unregister)
+		if err != nil {
+			fmt.Printf(" - %s\n", err)
+			continue
+		}
+
+		/* (3) Register client */
+		s.ch.register <- cli
+
+	}
+
+	return nil
+
+}
+
+
+// Scheduler schedules clients registration and broadcast
+func (s *T) scheduler(){
+
+	for {
+
+		select {
+
+			/* (1) New client */
+			case client := <- s.ch.register:
+
+				fmt.Printf(" + client (sock: %p)\n", client.IO.Sock)
+				s.clients[client.IO.Sock] = client
+
+			/* (2) New client */
+			case client := <- s.ch.unregister:
+
+				fmt.Printf(" - client (sock: %p)\n", client.IO.Sock)
+				delete(s.clients, client.IO.Sock)
+				client.IO.Sock.Close()
+
+			/* (3) Broadcast */
+			case message := <- s.ch.broadcast:
+
+				fmt.Printf(" + broadcast\n")
+
+				for _, c := range s.clients{
+					c.Ch.Send <- message
+				}
+
+		}
+
+	}
+
+	fmt.Printf("+ server stopped\n")
+
+}
diff --git a/ws/server/types.go b/ws/server/types.go
new file mode 100644
index 0000000..88a3bda
--- /dev/null
+++ b/ws/server/types.go
@@ -0,0 +1,30 @@
+package server
+
+import (
+	"git.xdrm.io/gws/ws/message"
+	"git.xdrm.io/gws/ws/controller"
+	"git.xdrm.io/gws/ws/client"
+	"net"
+)
+
+// Represents all channels that need a server
+type ServerChannelSet struct{
+	register   chan *client.T
+	unregister chan *client.T
+	broadcast  chan message.T
+}
+
+
+// Represents a websocket server
+type T struct {
+	sock              net.Listener  // listen socket
+	addr              []byte        // server listening ip/host
+	port              uint16        // server listening port
+
+	clients           map[net.Conn]*client.T  // clients
+
+	ctl               controller.Set // controllers
+
+	ch                ServerChannelSet
+}
+
diff --git a/ws/spec/const.go b/ws/spec/const.go
new file mode 100644
index 0000000..b190920
--- /dev/null
+++ b/ws/spec/const.go
@@ -0,0 +1,5 @@
+package spec
+
+const maxBufferLength        = 4096
+const maxHeaderLength        = 2 + 8 + 4
+const maxChannelBufferLength = 1