diff --git a/callbacks.go b/callbacks.go
index 8823636..51a49d3 100644
--- a/callbacks.go
+++ b/callbacks.go
@@ -5,12 +5,15 @@ package nghttp2
 */
 import "C"
 import (
+	"bytes"
 	"crypto/tls"
 	"errors"
 	"io"
 	"net/http"
+	"net/url"
 	"strconv"
 	"strings"
+	"sync"
 	"unsafe"
 )
 
@@ -49,7 +52,7 @@ func onDataSourceReadCallback(ptr unsafe.Pointer, streamID C.int,
 		}
 		if err == errAgain {
 			//log.Println("onDataSourceReadCallback end")
-			s.dp.deferred = true
+			//s.dp.deferred = true
 			return NGHTTP2_ERR_DEFERRED
 		}
 		//log.Println("onDataSourceReadCallback end")
@@ -82,7 +85,7 @@ func onDataChunkRecv(ptr unsafe.Pointer, streamID C.int,
 		//log.Println("onDataChunkRecv end")
 		return C.int(length)
 	}
-
+	//log.Println("bp write")
 	n, err := s.bp.Write(gobuf)
 	if err != nil {
 		return NGHTTP2_ERR_TEMPORAL_CALLBACK_FAILURE
@@ -118,34 +121,47 @@ func onBeginHeaderCallback(ptr unsafe.Pointer, streamID C.int) C.int {
 	//log.Printf("stream %d begin headers", int(streamID))
 	conn := (*Conn)(unsafe.Pointer(uintptr(ptr)))
 
-	s, ok := conn.streams[int(streamID)]
-	if !ok {
-		//log.Println("onBeginHeaderCallback end")
-		return NGHTTP2_ERR_TEMPORAL_CALLBACK_FAILURE
-	}
-	var TLS tls.ConnectionState
-	if tlsconn, ok := conn.conn.(*tls.Conn); ok {
-		TLS = tlsconn.ConnectionState()
-	}
-	if conn.isServer {
-		s.request = &http.Request{
-			Header:     make(http.Header),
+	// client
+	if !conn.isServer {
+		s, ok := conn.streams[int(streamID)]
+		if !ok {
+			//log.Println("onBeginHeaderCallback end")
+			return NGHTTP2_ERR_TEMPORAL_CALLBACK_FAILURE
+		}
+		var TLS tls.ConnectionState
+		if tlsconn, ok := conn.conn.(*tls.Conn); ok {
+			TLS = tlsconn.ConnectionState()
+		}
+		s.response = &http.Response{
 			Proto:      "HTTP/2",
 			ProtoMajor: 2,
 			ProtoMinor: 0,
-			TLS:        &TLS,
+			Header:     make(http.Header),
 			Body:       s.bp,
+			TLS:        &TLS,
 		}
 		return NGHTTP2_NO_ERROR
 	}
-	s.response = &http.Response{
-		Proto:      "HTTP/2",
-		ProtoMajor: 2,
-		ProtoMinor: 0,
-		Header:     make(http.Header),
-		Body:       s.bp,
-		TLS:        &TLS,
+
+	// server
+	s := &stream{
+		streamID: int(streamID),
+		conn:     conn,
+		bp: &bodyProvider{
+			buf:  new(bytes.Buffer),
+			lock: new(sync.Mutex),
+		},
+		request: &http.Request{
+			Header:     make(http.Header),
+			Proto:      "HTTP/2",
+			ProtoMajor: 2,
+			ProtoMinor: 0,
+		},
 	}
+	s.request.Body = s.bp
+
+	conn.streams[int(streamID)] = s
+
 	//log.Println("onBeginHeaderCallback end")
 	return NGHTTP2_NO_ERROR
 }
@@ -157,7 +173,7 @@ func onHeaderCallback(ptr unsafe.Pointer, streamID C.int,
 	name unsafe.Pointer, namelen C.int,
 	value unsafe.Pointer, valuelen C.int) C.int {
 	//log.Println("onHeaderCallback begin")
-	//log.Println("header")
+	//log.Printf("header %d", int(streamID))
 	conn := (*Conn)(unsafe.Pointer(uintptr(ptr)))
 	goname := string(C.GoBytes(name, namelen))
 	govalue := string(C.GoBytes(value, valuelen))
@@ -176,7 +192,16 @@ func onHeaderCallback(ptr unsafe.Pointer, streamID C.int,
 		s.request.Host = govalue
 	case ":path":
 		s.request.RequestURI = govalue
+		u, err := url.Parse(govalue)
+		if err != nil {
+			return NGHTTP2_ERR_TEMPORAL_CALLBACK_FAILURE
+		}
+		s.request.URL = u
 	case ":status":
+		if s.response == nil {
+			//log.Println("empty response")
+			return NGHTTP2_ERR_TEMPORAL_CALLBACK_FAILURE
+		}
 		statusCode, _ := strconv.Atoi(govalue)
 		s.response.StatusCode = statusCode
 		s.response.Status = http.StatusText(statusCode)
@@ -208,7 +233,11 @@ func onHeadersDoneCallback(ptr unsafe.Pointer, streamID C.int) C.int {
 		//log.Println("onHeadersDoneCallback end")
 		return NGHTTP2_ERR_TEMPORAL_CALLBACK_FAILURE
 	}
+	s.headersEnd = true
 	if conn.isServer {
+		if s.request.Method == "CONNECT" {
+			go conn.serve(s)
+		}
 		return NGHTTP2_NO_ERROR
 	}
 	select {
@@ -257,5 +286,19 @@ func onConnectionCloseCallback(ptr unsafe.Pointer) {
 
 //export onStreamEndCallback
 func onStreamEndCallback(ptr unsafe.Pointer, streamID C.int) {
+	conn := (*Conn)(unsafe.Pointer(uintptr(ptr)))
+	stream, ok := conn.streams[int(streamID)]
+	if !ok {
+		return
+	}
+	stream.streamEnd = true
 
+	stream.bp.Close()
+
+	if stream.conn.isServer {
+		if stream.request.Method != "CONNECT" {
+			go conn.serve(stream)
+		}
+		return
+	}
 }
diff --git a/conn.go b/conn.go
index 2a2f4b3..9af5a7a 100644
--- a/conn.go
+++ b/conn.go
@@ -6,10 +6,13 @@ package nghttp2
 */
 import "C"
 import (
+	"bytes"
 	"errors"
 	"fmt"
+	"io"
 	"net"
 	"net/http"
+	"net/url"
 	"sync"
 	"time"
 	"unsafe"
@@ -30,14 +33,189 @@ type Conn struct {
 	exitch      chan struct{}
 }
 
+// Server create server side http2 connection
+func Server(c net.Conn, handler http.Handler) (*Conn, error) {
+	conn := &Conn{
+		conn:     c,
+		handler:  handler,
+		errch:    make(chan error),
+		exitch:   make(chan struct{}),
+		lock:     new(sync.Mutex),
+		isServer: true,
+		streams:  make(map[int]*stream),
+	}
+	conn.session = C.init_nghttp2_server_session(C.size_t(uintptr(unsafe.Pointer(conn))))
+	if conn.session == nil {
+		return nil, errors.New("init server session failed")
+	}
+	ret := C.send_connection_header(conn.session)
+	if int(ret) < 0 {
+		conn.Close()
+		return nil, fmt.Errorf("send settings error: %s", C.GoString(C.nghttp2_strerror(ret)))
+	}
+	return conn, nil
+}
+
+// Client create client side http2 connection
+func Client(c net.Conn) (*Conn, error) {
+	conn := &Conn{
+		conn:    c,
+		errch:   make(chan error),
+		exitch:  make(chan struct{}),
+		lock:    new(sync.Mutex),
+		streams: make(map[int]*stream),
+	}
+	conn.session = C.init_nghttp2_client_session(C.size_t(uintptr(unsafe.Pointer(conn))))
+	if conn.session == nil {
+		return nil, errors.New("init server session failed")
+	}
+	ret := C.send_connection_header(conn.session)
+	if int(ret) < 0 {
+		conn.Close()
+		return nil, fmt.Errorf("send settings error: %s", C.GoString(C.nghttp2_strerror(ret)))
+	}
+	go conn.Run()
+	return conn, nil
+}
+
+// Error return conn error
+func (c *Conn) Error() error {
+	c.lock.Lock()
+	defer c.lock.Unlock()
+	return c.err
+}
+
+// CanTakeNewRequest check if conn can create new request
+func (c *Conn) CanTakeNewRequest() bool {
+	if c.streamCount > ((2<<31 - 1) / 2) {
+		return false
+	}
+	if c.err != nil {
+		return false
+	}
+	return true
+}
+
 // RoundTrip submit http request and return the response
 func (c *Conn) RoundTrip(req *http.Request) (*http.Response, error) {
-	return nil, errors.New("not implement")
+	nv := []C.nghttp2_nv{}
+
+	nv = append(nv, newNV(":method", req.Method))
+	nv = append(nv, newNV(":authority", req.Host))
+	nv = append(nv, newNV(":scheme", "https"))
+
+	p := req.URL.Path
+	q := req.URL.Query().Encode()
+	if q != "" {
+		p = fmt.Sprintf("%s?%s", p, q)
+	}
+	nv = append(nv, newNV(":path", p))
+
+	cdp := C.nghttp2_data_provider{}
+	dp := newDataProvider(unsafe.Pointer(&cdp), c.lock, 1)
+	dp.session = c.session
+	var _cdp *C.nghttp2_data_provider
+	if req.Method == "POST" || req.Method == "PUT" {
+		_cdp = &cdp
+	}
+	s, err := c.submitRequest(nv, _cdp)
+	if err != nil {
+		return nil, err
+	}
+	s.dp = dp
+	s.dp.streamID = s.streamID
+
+	c.lock.Lock()
+	c.streams[s.streamID] = s
+	c.streamCount++
+	c.lock.Unlock()
+	if req.Method == "POST" || req.Method == "PUT" {
+		go func() {
+			io.Copy(dp, req.Body)
+			dp.Close()
+		}()
+	}
+	select {
+	case res := <-s.resch:
+		/*
+			if res.StatusCode != http.StatusOK {
+				return nil, fmt.Errorf("http error code %d", res.StatusCode)
+			}
+		*/
+		s.request = req
+		res.Request = s.request
+		return res, nil
+	case <-c.exitch:
+		return nil, errors.New("connection closed")
+	}
+}
+
+func (c *Conn) submitRequest(nv []C.nghttp2_nv, cdp *C.nghttp2_data_provider) (*stream, error) {
+
+	c.lock.Lock()
+	ret := C._nghttp2_submit_request(c.session, nil,
+		C.size_t(uintptr(unsafe.Pointer(&nv[0]))), C.size_t(len(nv)), cdp, nil)
+	c.lock.Unlock()
+
+	if int(ret) < 0 {
+		return nil, fmt.Errorf("submit request error: %s", C.GoString(C.nghttp2_strerror(ret)))
+	}
+	streamID := int(ret)
+	s := &stream{
+		streamID: streamID,
+		conn:     c,
+		bp: &bodyProvider{
+			buf:  new(bytes.Buffer),
+			lock: new(sync.Mutex),
+		},
+		resch: make(chan *http.Response),
+	}
+	if cdp != nil {
+		s.cdp = *cdp
+	}
+	return s, nil
 }
 
 // Connect submit connect request
-func (c *Conn) Connect(addr string) (net.Conn, error) {
-	return nil, errors.New("not implement")
+func (c *Conn) Connect(addr string) (net.Conn, int, error) {
+	nv := []C.nghttp2_nv{}
+
+	nv = append(nv, newNV(":method", "CONNECT"))
+	nv = append(nv, newNV(":authority", addr))
+
+	cdp := C.nghttp2_data_provider{}
+	dp := newDataProvider(unsafe.Pointer(&cdp), c.lock, 1)
+	dp.session = c.session
+
+	s, err := c.submitRequest(nv, &cdp)
+	if err != nil {
+		return nil, http.StatusBadGateway, err
+	}
+	s.dp = dp
+	c.lock.Lock()
+	c.streams[s.streamID] = s
+	c.streamCount++
+	c.lock.Unlock()
+
+	s.dp.streamID = s.streamID
+
+	select {
+	case res := <-s.resch:
+		if res.StatusCode != http.StatusOK {
+			return nil, res.StatusCode, fmt.Errorf("http error code %d", res.StatusCode)
+		}
+		s.request = &http.Request{
+			Method:     "CONNECT",
+			Host:       addr,
+			RequestURI: addr,
+			URL:        &url.URL{},
+		}
+		res.Request = s.request
+		return s, res.StatusCode, nil
+	case <-c.exitch:
+		return nil, http.StatusServiceUnavailable, errors.New("connection closed")
+	}
+
 }
 
 // Run run the event loop
@@ -58,6 +236,15 @@ func (c *Conn) Run() {
 	}
 }
 
+func (c *Conn) serve(s *stream) {
+	var handler = c.handler
+	if handler == nil {
+		handler = http.DefaultServeMux
+	}
+	handler.ServeHTTP(s, s.request)
+	s.Close()
+}
+
 // Close close the connection
 func (c *Conn) Close() error {
 	if c.closed {
@@ -67,6 +254,12 @@ func (c *Conn) Close() error {
 	for _, s := range c.streams {
 		s.Close()
 	}
+
+	c.lock.Lock()
+	C.nghttp2_session_terminate_session(c.session, 0)
+	C.nghttp2_session_del(c.session)
+	c.lock.Unlock()
+
 	close(c.exitch)
 	c.conn.Close()
 	return nil
@@ -148,6 +341,7 @@ func (c *Conn) writeloop() {
 		wantWrite := C.nghttp2_session_want_write(c.session)
 		c.lock.Unlock()
 		if int(wantWrite) == 0 {
+			//log.Println("write loop, sleep")
 			time.Sleep(delay)
 		}
 	}
diff --git a/data_provider.go b/data_provider.go
index 9d1efb2..42b8c93 100644
--- a/data_provider.go
+++ b/data_provider.go
@@ -7,7 +7,6 @@ import "C"
 import (
 	"bytes"
 	"errors"
-	"io"
 	"log"
 	"sync"
 	"time"
@@ -31,7 +30,7 @@ type dataProvider struct {
 // Read read from data provider
 func (dp *dataProvider) Read(buf []byte) (n int, err error) {
 	if dp.buf == nil || dp.lock == nil || dp.sessLock == nil || dp.session == nil {
-		log.Println("db read invalid state")
+		log.Println("dp read invalid state")
 		return 0, errors.New("invalid state")
 	}
 	dp.lock.Lock()
@@ -39,6 +38,8 @@ func (dp *dataProvider) Read(buf []byte) (n int, err error) {
 
 	n, err = dp.buf.Read(buf)
 	if err != nil && !dp.closed {
+		//log.Println("deferred")
+		dp.deferred = true
 		return 0, errAgain
 	}
 	return
@@ -53,18 +54,20 @@ func (dp *dataProvider) Write(buf []byte) (n int, err error) {
 	dp.lock.Lock()
 	defer dp.lock.Unlock()
 
-	if dp.closed {
-		return 0, io.EOF
-	}
+	//if dp.closed {
+	//	return 0, io.EOF
+	//}
 
+	n, err = dp.buf.Write(buf)
 	if dp.deferred {
 		dp.sessLock.Lock()
 		C.nghttp2_session_resume_data(dp.session, C.int(dp.streamID))
 		dp.sessLock.Unlock()
 
+		//log.Println("resume")
 		dp.deferred = false
 	}
-	return dp.buf.Write(buf)
+	return
 }
 
 // Close end to provide data
diff --git a/nghttp2.c b/nghttp2.c
index 3b8f301..7af9e7f 100644
--- a/nghttp2.c
+++ b/nghttp2.c
@@ -23,8 +23,8 @@ int on_invalid_frame_recv_callback(nghttp2_session *session,
     return 0;
 }
 static ssize_t on_data_source_read_callback(nghttp2_session *session, int32_t stream_id,
-                                                   uint8_t *buf, size_t length, uint32_t *data_flags,
-                                                   nghttp2_data_source *source, void *user_data)
+                                            uint8_t *buf, size_t length, uint32_t *data_flags,
+                                            nghttp2_data_source *source, void *user_data)
 {
     int ret = onDataSourceReadCallback(user_data, stream_id, buf, length);
     if (ret == 0)
@@ -48,7 +48,8 @@ static int on_frame_recv_callback(nghttp2_session *session,
     switch (frame->hd.type)
     {
     case NGHTTP2_HEADERS:
-        if (frame->headers.cat == NGHTTP2_HCAT_REQUEST)
+        if (frame->headers.cat == NGHTTP2_HCAT_REQUEST ||
+            frame->headers.cat == NGHTTP2_HCAT_RESPONSE)
         {
             onHeadersDoneCallback(user_data, frame->hd.stream_id);
         }
@@ -82,7 +83,8 @@ static int on_header_callback(nghttp2_session *session,
     switch (frame->hd.type)
     {
     case NGHTTP2_HEADERS:
-        if (frame->headers.cat == NGHTTP2_HCAT_REQUEST)
+        if (frame->headers.cat == NGHTTP2_HCAT_REQUEST ||
+            frame->headers.cat == NGHTTP2_HCAT_RESPONSE)
         {
             onHeaderCallback(user_data, frame->hd.stream_id,
                              (void *)name, namelen, (void *)value, valuelen);
@@ -109,7 +111,8 @@ static int on_begin_headers_callback(nghttp2_session *session,
     switch (frame->hd.type)
     {
     case NGHTTP2_HEADERS:
-        if (frame->headers.cat == NGHTTP2_HCAT_REQUEST)
+        if (frame->headers.cat == NGHTTP2_HCAT_REQUEST ||
+            frame->headers.cat == NGHTTP2_HCAT_RESPONSE)
         {
             onBeginHeaderCallback(user_data, frame->hd.stream_id);
         }
@@ -123,6 +126,7 @@ nghttp2_session *init_nghttp2_server_session(size_t data)
     nghttp2_session_callbacks *callbacks;
     nghttp2_session *session;
 
+    nghttp2_session_callbacks_new(&callbacks);
     init_nghttp2_callbacks(callbacks);
     nghttp2_session_server_new(&session, callbacks, (void *)((int *)(data)));
 
@@ -177,8 +181,26 @@ int send_connection_header(nghttp2_session *session)
     return rv;
 }
 
-int data_provider_set_callback(size_t dp, size_t data, int t){
-    nghttp2_data_provider *cdp = (nghttp2_data_provider*)dp;
+int data_provider_set_callback(size_t dp, size_t data, int t)
+{
+    nghttp2_data_provider *cdp = (nghttp2_data_provider *)dp;
     cdp->source.ptr = (void *)data;
-    cdp->read_callback=on_data_source_read_callback;
+    cdp->read_callback = on_data_source_read_callback;
+}
+
+int _nghttp2_submit_response(nghttp2_session *sess, int streamid,
+                             size_t nv, size_t nvlen, nghttp2_data_provider *dp)
+{
+
+    return nghttp2_submit_response(sess, streamid, (nghttp2_nv *)nv, nvlen, dp);
+}
+
+int _nghttp2_submit_request(nghttp2_session *session, const nghttp2_priority_spec *pri_spec,
+                            size_t nva, size_t nvlen,
+                            const nghttp2_data_provider *data_prd, void *stream_user_data)
+{
+
+    return nghttp2_submit_request(session, pri_spec,
+                                  (nghttp2_nv *)nva, nvlen,
+                                  data_prd, stream_user_data);
 }
\ No newline at end of file
diff --git a/stream.go b/stream.go
index e43b234..17d6513 100644
--- a/stream.go
+++ b/stream.go
@@ -1,48 +1,147 @@
 package nghttp2
 
+/*
+#include "_nghttp2.h"
+*/
+import "C"
 import (
 	"errors"
+	"fmt"
 	"net"
 	"net/http"
+	"strings"
 	"time"
+	"unsafe"
 )
 
 type stream struct {
-	streamID int
-	conn     *Conn
-	dp       *dataProvider
-	bp       *bodyProvider
-	request  *http.Request
-	response *http.Response
-	resch    chan *http.Response
+	streamID   int
+	conn       *Conn
+	dp         *dataProvider
+	bp         *bodyProvider
+	request    *http.Request
+	response   *http.Response
+	resch      chan *http.Response
+	headersEnd bool
+	streamEnd  bool
+	closed     bool
+	cdp        C.nghttp2_data_provider
 }
 
 var _ net.Conn = &stream{}
 
 func (s *stream) Read(buf []byte) (int, error) {
-	return 0, errors.New("not implement")
+	if s.bp != nil {
+		return s.bp.Read(buf)
+	}
+	return 0, errors.New("empty body")
+}
+
+func (s *stream) WriteHeader(code int) {
+	if s.response == nil {
+		s.response = &http.Response{
+			Proto:      "http/2",
+			ProtoMajor: 2,
+			ProtoMinor: 0,
+			Header:     make(http.Header),
+		}
+	}
+	if s.response.StatusCode != 0 {
+		return
+	}
+
+	s.response.StatusCode = code
+	s.response.Status = http.StatusText(code)
+
+	nv := []C.nghttp2_nv{}
+	nv = append(nv, newNV(":status", fmt.Sprintf("%d", code)))
+	for k, v := range s.response.Header {
+		_k := strings.ToLower(k)
+		if _k == "host" || _k == "connection" || _k == "transfer-encoding" {
+			continue
+		}
+		nv = append(nv, newNV(k, v[0]))
+	}
+
+	s.cdp = C.nghttp2_data_provider{}
+	s.dp = newDataProvider(unsafe.Pointer(&s.cdp), s.conn.lock, 0)
+	s.dp.session = s.conn.session
+	s.dp.streamID = s.streamID
+
+	s.conn.lock.Lock()
+	ret := C._nghttp2_submit_response(s.conn.session, C.int(s.streamID),
+		C.size_t(uintptr(unsafe.Pointer(&nv[0]))), C.size_t(len(nv)), &s.cdp)
+	s.conn.lock.Unlock()
+
+	if int(ret) < 0 {
+		panic(fmt.Sprintf("submit response error: %s", C.GoString(C.nghttp2_strerror(ret))))
+	}
+}
+
+func (s *stream) Header() http.Header {
+	if s.response == nil {
+		s.response = &http.Response{
+			Proto:      "http/2",
+			ProtoMajor: 2,
+			ProtoMinor: 0,
+			Header:     make(http.Header),
+		}
+	}
+	return s.response.Header
 }
+
 func (s *stream) Write(buf []byte) (int, error) {
-	if s.conn.isServer {
-		return 0, errors.New("not implement")
+	if s.conn.isServer && s.response == nil {
+		s.WriteHeader(http.StatusOK)
+	}
+
+	if s.dp != nil {
+		return s.dp.Write(buf)
 	}
-	return 0, errors.New("not implement")
+	return 0, errors.New("empty dp")
 }
+
 func (s *stream) Close() error {
+	if s.closed {
+		return nil
+	}
+	s.closed = true
+	if s.dp != nil {
+		s.dp.Close()
+	}
+	if s.bp != nil {
+		s.bp.Close()
+	}
+	//s.conn.lock.Lock()
+	//if _, ok := s.conn.streams[s.streamID]; ok {
+	//	delete(s.conn.streams, s.streamID)
+	///}
+	//s.conn.lock.Unlock()
+	if s.request != nil && s.request.Method == "CONNECT" {
+		//log.Println("rst stream")
+		s.conn.lock.Lock()
+		C.nghttp2_submit_rst_stream(s.conn.session, 0, C.int(s.streamID), 8)
+		s.conn.lock.Unlock()
+	}
 	return nil
 }
+
 func (s *stream) LocalAddr() net.Addr {
 	return nil
 }
+
 func (s *stream) RemoteAddr() net.Addr {
 	return nil
 }
+
 func (s *stream) SetDeadline(t time.Time) error {
 	return errors.New("not implement")
 }
+
 func (s *stream) SetReadDeadline(t time.Time) error {
 	return errors.New("not implement")
 }
+
 func (s *stream) SetWriteDeadline(t time.Time) error {
 	return errors.New("not implement")
 }