diff --git a/cmd/api/api.go b/cmd/api/api.go
index 322d23c4..83761fb8 100644
--- a/cmd/api/api.go
+++ b/cmd/api/api.go
@@ -76,13 +76,8 @@ func HandleFunc(pattern string, handler http.HandlerFunc) {
 	http.HandleFunc(pattern, handler)
 }
 
-func HandleWS(msgType string, handler WSHandler) {
-	wsHandlers[msgType] = handler
-}
-
 var basePath string
 var log zerolog.Logger
-var wsHandlers = make(map[string]WSHandler)
 
 func middlewareLog(next http.Handler) http.Handler {
 	return http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
diff --git a/cmd/api/ws.go b/cmd/api/ws.go
index 68224d25..ab42c537 100644
--- a/cmd/api/ws.go
+++ b/cmd/api/ws.go
@@ -1,7 +1,6 @@
 package api
 
 import (
-	"github.com/AlexxIT/go2rtc/pkg/streamer"
 	"github.com/gorilla/websocket"
 	"net/http"
 	"net/url"
@@ -9,6 +8,20 @@ import (
 	"sync"
 )
 
+// Message - struct for data exchange in Web API
+type Message struct {
+	Type  string      `json:"type"`
+	Value interface{} `json:"value,omitempty"`
+}
+
+type WSHandler func(tr *Transport, msg *Message)
+
+func HandleWS(msgType string, handler WSHandler) {
+	wsHandlers[msgType] = handler
+}
+
+var wsHandlers = make(map[string]WSHandler)
+
 func initWS(origin string) {
 	wsUp = &websocket.Upgrader{
 		ReadBufferSize:  1024,
@@ -63,7 +76,7 @@ func apiWS(w http.ResponseWriter, r *http.Request) {
 	})
 
 	for {
-		msg := new(streamer.Message)
+		msg := new(Message)
 		if err = ws.ReadJSON(msg); err != nil {
 			log.Trace().Err(err).Caller().Send()
 			_ = ws.Close()
@@ -80,8 +93,6 @@ func apiWS(w http.ResponseWriter, r *http.Request) {
 
 var wsUp *websocket.Upgrader
 
-type WSHandler func(tr *Transport, msg *streamer.Message)
-
 type Transport struct {
 	Request  *http.Request
 	Consumer interface{} // TODO: rewrite
@@ -115,9 +126,7 @@ func (t *Transport) Close() {
 }
 
 func (t *Transport) Error(err error) {
-	t.Write(&streamer.Message{
-		Type: "error", Value: err.Error(),
-	})
+	t.Write(&Message{Type: "error", Value: err.Error()})
 }
 
 func (t *Transport) OnChange(f func()) {
diff --git a/cmd/mjpeg/mjpeg.go b/cmd/mjpeg/mjpeg.go
index 2219df5f..db6eff16 100644
--- a/cmd/mjpeg/mjpeg.go
+++ b/cmd/mjpeg/mjpeg.go
@@ -4,7 +4,6 @@ import (
 	"github.com/AlexxIT/go2rtc/cmd/api"
 	"github.com/AlexxIT/go2rtc/cmd/streams"
 	"github.com/AlexxIT/go2rtc/pkg/mjpeg"
-	"github.com/AlexxIT/go2rtc/pkg/streamer"
 	"github.com/rs/zerolog/log"
 	"net/http"
 	"strconv"
@@ -100,8 +99,8 @@ func handlerStream(w http.ResponseWriter, r *http.Request) {
 	//log.Trace().Msg("[api.mjpeg] close")
 }
 
-func handlerWS(ctx *api.Transport, msg *streamer.Message) {
-	src := ctx.Request.URL.Query().Get("src")
+func handlerWS(tr *api.Transport, msg *api.Message) {
+	src := tr.Request.URL.Query().Get("src")
 	stream := streams.GetOrNew(src)
 	if stream == nil {
 		return
@@ -110,7 +109,7 @@ func handlerWS(ctx *api.Transport, msg *streamer.Message) {
 	cons := &mjpeg.Consumer{}
 	cons.Listen(func(msg interface{}) {
 		if data, ok := msg.([]byte); ok {
-			ctx.Write(data)
+			tr.Write(data)
 		}
 	})
 
@@ -119,7 +118,7 @@ func handlerWS(ctx *api.Transport, msg *streamer.Message) {
 		return
 	}
 
-	ctx.OnClose(func() {
+	tr.OnClose(func() {
 		stream.RemoveConsumer(cons)
 	})
 }
diff --git a/cmd/mp4/ws.go b/cmd/mp4/ws.go
index 6b4c891d..0c84eede 100644
--- a/cmd/mp4/ws.go
+++ b/cmd/mp4/ws.go
@@ -10,16 +10,16 @@ import (
 
 const packetSize = 8192
 
-func handlerWS(ctx *api.Transport, msg *streamer.Message) {
-	src := ctx.Request.URL.Query().Get("src")
+func handlerWS(tr *api.Transport, msg *api.Message) {
+	src := tr.Request.URL.Query().Get("src")
 	stream := streams.GetOrNew(src)
 	if stream == nil {
 		return
 	}
 
 	cons := &mp4.Consumer{}
-	cons.UserAgent = ctx.Request.UserAgent()
-	cons.RemoteAddr = ctx.Request.RemoteAddr
+	cons.UserAgent = tr.Request.UserAgent()
+	cons.RemoteAddr = tr.Request.RemoteAddr
 
 	if codecs, ok := msg.Value.(string); ok {
 		cons.Medias = parseMedias(codecs, true)
@@ -28,39 +28,39 @@ func handlerWS(ctx *api.Transport, msg *streamer.Message) {
 	cons.Listen(func(msg interface{}) {
 		if data, ok := msg.([]byte); ok {
 			for len(data) > packetSize {
-				ctx.Write(data[:packetSize])
+				tr.Write(data[:packetSize])
 				data = data[packetSize:]
 			}
-			ctx.Write(data)
+			tr.Write(data)
 		}
 	})
 
 	if err := stream.AddConsumer(cons); err != nil {
 		log.Warn().Err(err).Caller().Send()
-		ctx.Error(err)
+		tr.Error(err)
 		return
 	}
 
-	ctx.OnClose(func() {
+	tr.OnClose(func() {
 		stream.RemoveConsumer(cons)
 	})
 
-	ctx.Write(&streamer.Message{Type: "mse", Value: cons.MimeType()})
+	tr.Write(&api.Message{Type: "mse", Value: cons.MimeType()})
 
 	data, err := cons.Init()
 	if err != nil {
 		log.Warn().Err(err).Caller().Send()
-		ctx.Error(err)
+		tr.Error(err)
 		return
 	}
 
-	ctx.Write(data)
+	tr.Write(data)
 
 	cons.Start()
 }
 
-func handlerWS4(ctx *api.Transport, msg *streamer.Message) {
-	src := ctx.Request.URL.Query().Get("src")
+func handlerWS4(tr *api.Transport, msg *api.Message) {
+	src := tr.Request.URL.Query().Get("src")
 	stream := streams.GetOrNew(src)
 	if stream == nil {
 		return
@@ -74,7 +74,7 @@ func handlerWS4(ctx *api.Transport, msg *streamer.Message) {
 
 	cons.Listen(func(msg interface{}) {
 		if data, ok := msg.([]byte); ok {
-			ctx.Write(data)
+			tr.Write(data)
 		}
 	})
 
@@ -83,7 +83,7 @@ func handlerWS4(ctx *api.Transport, msg *streamer.Message) {
 		return
 	}
 
-	ctx.OnClose(func() {
+	tr.OnClose(func() {
 		stream.RemoveConsumer(cons)
 	})
 }
diff --git a/cmd/webrtc/candidates.go b/cmd/webrtc/candidates.go
index bc0e6fd4..9a711cdc 100644
--- a/cmd/webrtc/candidates.go
+++ b/cmd/webrtc/candidates.go
@@ -2,7 +2,6 @@ package webrtc
 
 import (
 	"github.com/AlexxIT/go2rtc/cmd/api"
-	"github.com/AlexxIT/go2rtc/pkg/streamer"
 	"github.com/AlexxIT/go2rtc/pkg/webrtc"
 	"github.com/pion/sdp/v3"
 )
@@ -13,7 +12,7 @@ func AddCandidate(address string) {
 	candidates = append(candidates, address)
 }
 
-func asyncCandidates(ctx *api.Transport) {
+func asyncCandidates(tr *api.Transport) {
 	for _, address := range candidates {
 		address, err := webrtc.LookupIP(address)
 		if err != nil {
@@ -29,7 +28,7 @@ func asyncCandidates(ctx *api.Transport) {
 
 		log.Trace().Str("candidate", cand).Msg("[webrtc] config")
 
-		ctx.Write(&streamer.Message{Type: "webrtc/candidate", Value: cand})
+		tr.Write(&api.Message{Type: "webrtc/candidate", Value: cand})
 	}
 }
 
@@ -79,11 +78,11 @@ func syncCanditates(answer string) (string, error) {
 	return string(data), nil
 }
 
-func candidateHandler(ctx *api.Transport, msg *streamer.Message) {
-	if ctx.Consumer == nil {
+func candidateHandler(tr *api.Transport, msg *api.Message) {
+	if tr.Consumer == nil {
 		return
 	}
-	if conn := ctx.Consumer.(*webrtc.Conn); conn != nil {
+	if conn := tr.Consumer.(*webrtc.Conn); conn != nil {
 		s := msg.Value.(string)
 		log.Trace().Str("candidate", s).Msg("[webrtc] remote")
 		conn.AddCandidate(s)
diff --git a/cmd/webrtc/webrtc.go b/cmd/webrtc/webrtc.go
index 524d962a..f975b839 100644
--- a/cmd/webrtc/webrtc.go
+++ b/cmd/webrtc/webrtc.go
@@ -4,7 +4,6 @@ import (
 	"github.com/AlexxIT/go2rtc/cmd/api"
 	"github.com/AlexxIT/go2rtc/cmd/app"
 	"github.com/AlexxIT/go2rtc/cmd/streams"
-	"github.com/AlexxIT/go2rtc/pkg/streamer"
 	"github.com/AlexxIT/go2rtc/pkg/webrtc"
 	pion "github.com/pion/webrtc/v3"
 	"github.com/rs/zerolog"
@@ -66,7 +65,7 @@ var log zerolog.Logger
 
 var NewPConn func() (*pion.PeerConnection, error)
 
-func asyncHandler(tr *api.Transport, msg *streamer.Message) {
+func asyncHandler(tr *api.Transport, msg *api.Message) {
 	src := tr.Request.URL.Query().Get("src")
 	stream := streams.Get(src)
 	if stream == nil {
@@ -96,7 +95,7 @@ func asyncHandler(tr *api.Transport, msg *streamer.Message) {
 			if msg != nil {
 				s := msg.ToJSON().Candidate
 				log.Trace().Str("candidate", s).Msg("[webrtc] local")
-				tr.Write(&streamer.Message{Type: "webrtc/candidate", Value: s})
+				tr.Write(&api.Message{Type: "webrtc/candidate", Value: s})
 			}
 		}
 	})
@@ -133,7 +132,7 @@ func asyncHandler(tr *api.Transport, msg *streamer.Message) {
 
 	tr.Consumer = conn
 
-	tr.Write(&streamer.Message{Type: "webrtc/answer", Value: answer})
+	tr.Write(&api.Message{Type: "webrtc/answer", Value: answer})
 
 	asyncCandidates(tr)
 }
diff --git a/pkg/streamer/helpers.go b/pkg/streamer/helpers.go
index 7e6e7cf7..e1cf3e70 100644
--- a/pkg/streamer/helpers.go
+++ b/pkg/streamer/helpers.go
@@ -12,14 +12,6 @@ const (
 	JSONSend       = "send"
 )
 
-// Message - struct for data exchange in Web API
-type Message struct {
-	Type  string      `json:"type"`
-	Value interface{} `json:"value,omitempty"`
-}
-
-// other
-
 func Between(s, sub1, sub2 string) string {
 	i := strings.Index(s, sub1)
 	if i < 0 {