concurrent ws

pkg/auth/session.go

@@ -276,16 +276,16 @@ func (r *RefreshToken) AccessToken(req *http.Request) (string, error) {
 }
 
 func (a *authenticator) ValidateAccessToken(token AccessToken) *RefreshToken {
-	var uvIssRT *RefreshToken
+	var unverifiedIssRT *RefreshToken
 	claims := &jwt.StandardClaims{}
 	_, err := jwt.ParseWithClaims(string(token), claims, func(jt *jwt.Token) (interface{}, error) {
 		iss := jt.Claims.(*jwt.StandardClaims).Issuer
-		uvIssRT = a.store.GetRefreshToken(RefreshTokenID(iss))
+		unverifiedIssRT = a.store.GetRefreshToken(RefreshTokenID(iss))
-		if uvIssRT == nil {
+		if unverifiedIssRT == nil {
 			return nil, fmt.Errorf("bad token")
 		}
 
-		return []byte(uvIssRT.JWTKey), nil
+		return []byte(unverifiedIssRT.JWTKey), nil
 	})
 
 	if err != nil {
@@ -293,7 +293,7 @@ func (a *authenticator) ValidateAccessToken(token AccessToken) *RefreshToken {
 		return nil
 	}
 
-	return uvIssRT
+	return unverifiedIssRT
 }
 
 func (a *authenticator) verifyAndGetCredential(tr *TokenRequest) *Credentials {

pkg/blas/core/core.go

@@ -34,12 +34,12 @@ type WebSocketManager interface {
 }
 
 type WebSocketSession interface {
-	WSConn() *websocket.Conn
+	Conn() *websocket.Conn
-	Go() error
+	Go(context.Context) error
 	Blas() Blas
 }
 
-type Handler func(wss WebSocketSession, msgID int, cmd []string, msg interface{}) error
+type Handler func(ctx context.Context, wss WebSocketSession, msgID int, cmd []string, msg interface{}) error
 type NewData func(cmd []string) interface{}
 
 type Shutdowner interface {

pkg/frontend/frontend.go

@@ -1,6 +1,7 @@
 package frontend
 
 import (
+	"context"
 	"embed"
 	"io"
 	"io/fs"
@@ -56,7 +57,7 @@ func newData(_ []string) interface{} {
 	return map[string]interface{}{}
 }
 
-func wsHand(wss core.WebSocketSession, msgID int, cmd []string, msg interface{}) error {
+func wsHand(ctx context.Context, wss core.WebSocketSession, msgID int, cmd []string, msg interface{}) error {
 	return nil
 }
 

pkg/server/websocket.go

@@ -1,6 +1,7 @@
 package server
 
 import (
+	"context"
 	"dynatron.me/x/blasphem/pkg/wsapi"
 
 	"github.com/gorilla/websocket"
@@ -22,6 +23,8 @@ func (s *Server) wsHandler(c echo.Context) error {
 	defer conn.Close()
 
 	_ = log.Debug
+	ctx, cancel := context.WithCancel(c.Request().Context())
+	defer cancel()
 
-	return wsapi.NewSession(s, c, conn).Go()
+	return wsapi.NewSession(s, c, conn).Go(ctx)
 }

pkg/wsapi/api.go

@@ -1,9 +1,9 @@
 package wsapi
 
 import (
+	"context"
 	"encoding/json"
 	"errors"
-	"io"
 	"strings"
 
 	"dynatron.me/x/blasphem/pkg/auth"
@@ -18,32 +18,26 @@ import (
 var (
 	NoSuchHandlerErr = errors.New("bad websocket command")
 	NoMessageIDErr   = errors.New("no message ID")
+	AuthInvalidErr   = errors.New("invalid auth")
 )
 
 type Type string
 type MsgBase struct {
+	ID *int `json:"id,omitempty"`
 	Type Type `json:"type"`
 }
 
 type (
 	wsSession struct {
-		*websocket.Conn
+		conn *websocket.Conn
 		b  core.Blas
 		ec echo.Context
-		h  phaseHandler
+		write chan<- interface{}
 
 		user         *auth.User
 		refreshToken *auth.RefreshToken
 	}
 
-	phaseHandler interface {
-		handleMsg(io.Reader) error
-	}
-
-	cmdHandler struct {
-		*wsSession
-	}
-
 	wsEntry struct {
 		dataNew core.NewData
 		hnd     core.Handler
@@ -83,47 +77,100 @@ func NewManager() core.WebSocketManager {
 
 func NewSession(s core.Blas, c echo.Context, conn *websocket.Conn) core.WebSocketSession {
 	ws := &wsSession{
-		Conn: conn,
+		conn: conn,
 		b:    s,
 		ec:   c,
 	}
 
-	ws.h = &authPhase{ws}
-
 	return ws
 }
 
-func (ws *wsSession) WSConn() *websocket.Conn {
+func (ws *wsSession) Conn() *websocket.Conn {
-	return ws.Conn
+	return ws.conn
 }
 
 func (ws *wsSession) Blas() core.Blas { return ws.b }
 
-func (ws *wsSession) Go() error {
+func (ws *wsSession) Go(ctx context.Context) error {
+	authP := &authPhase{ws}
 	err := ws.sendAuthRequired()
 	if err != nil {
 		return err
 	}
+	
+	_, rdr, err := ws.conn.NextReader()
+	if err != nil {
+		return err
+	}
+
+	err = authP.handleMsg(ctx, rdr)
+	if err != nil {
+		return err
+	}
+
+	// command phase
+
+	msgChan := make(chan map[string]interface{})
+	write := make(chan interface{})
+	ws.write = write
+	defer close(write)
+
+	cCtx, cancel := context.WithCancel(ctx)
+	defer cancel()
+
+	go func(ctx context.Context, ch chan<- map[string]interface{}) {
+		defer close(ch)
+		for {
+			if err := ctx.Err(); err != nil {
+				return
+			}
+
+			_, rdr, err := ws.conn.NextReader()
+			switch {
+			case err == nil:
+			case websocket.IsCloseError(err, websocket.CloseGoingAway):
+				return
+			case err != nil:
+				log.Error().Err(err).Str("remote", ws.ec.Request().RemoteAddr).Msg("websocket read fail")
+				return
+			}
+
+			var msgMap map[string]interface{}
+			err = json.NewDecoder(rdr).Decode(&msgMap)
+			if err != nil {
+				ws.writeError(-1, Error{Code: "invalid_format", Message: err.Error()})
+			}
+
+			ch <- msgMap
+
+		}
+	}(cCtx, msgChan)
 
 	for {
-		_, rdr, err := ws.NextReader()
+		select {
-		switch {
+		case msg, ok := <-msgChan:
-		case err == nil:
+			if !ok {
-		case websocket.IsCloseError(err, websocket.CloseGoingAway):
+				return nil
-			return nil
+			}
-		case err != nil:
-			log.Error().Err(err).Str("remote", ws.ec.Request().RemoteAddr).Msg("websocket read fail")
-			return err
-		}
 
-		err = ws.h.handleMsg(rdr)
+			err = ws.handleMsg(ctx, msg)
-		if err != nil {
+			if err != nil {
-			log.Error().Err(err).Msg("handleMsg")
+				log.Error().Err(err).Msg("handleMsg")
+			}
+		case <-ctx.Done():
+			close(msgChan)
+			return nil
+		case m := <-write:
+			err := ws.conn.WriteJSON(m)
+			if err != nil {
+				log.Error().Err(err).Msg("writeMsg")
+			}
 		}
 	}
 }
 
-type cmdMsg struct {
+func (ws *wsSession) Write(msg interface{}) {
+	ws.write <- msg
 }
 
 type MsgType string
@@ -144,8 +191,8 @@ type WSError struct {
 	Error   Error   `json:"error"`
 }
 
-func (ws *cmdHandler) writeError(id int, err Error) error {
+func (ws *wsSession) writeError(id int, err Error) error {
-	return ws.WriteJSON(WSError{
+	return ws.conn.WriteJSON(WSError{
 		ID:      &id,
 		Type:    ResultMsgType,
 		Success: false,
@@ -153,11 +200,9 @@ func (ws *cmdHandler) writeError(id int, err Error) error {
 	})
 }
 
-func (ws *cmdHandler) handleMsg(r io.Reader) error {
+func (ws *wsSession) handleMsg(ctx context.Context, msgMap map[string]interface{}) error {
-	var msgMap map[string]interface{}
+	if err := ctx.Err(); err != nil {
-	err := json.NewDecoder(r).Decode(&msgMap)
+		return nil
-	if err != nil {
-		return err
 	}
 
 	msgType, ok := msgMap["type"].(string)
@@ -167,8 +212,7 @@ func (ws *cmdHandler) handleMsg(r io.Reader) error {
 
 	idFl, ok := msgMap["id"].(float64)
 	if !ok {
-		return ws.WriteJSON(
+		ws.Write(WSError{
-			WSError{
 				Type:    ResultMsgType,
 				Success: false,
 				Error: Error{
@@ -176,6 +220,7 @@ func (ws *cmdHandler) handleMsg(r io.Reader) error {
 					Message: "command has no ID",
 				},
 			})
+		return nil
 	}
 
 	id := int(idFl)
@@ -186,12 +231,15 @@ func (ws *cmdHandler) handleMsg(r io.Reader) error {
 	switch err {
 	case nil:
 	case NoSuchHandlerErr:
-		return ws.writeError(id, Error{
+		ws.writeError(id, Error{
 			Code:    "invalid_type",
 			Message: "no such command",
 		})
+
+		return nil
 	default:
-		return err
+		log.Error().Err(err).Msg("dispatch")
+		return nil
 	}
 
 	nd := newData(cmd)
@@ -207,5 +255,10 @@ func (ws *cmdHandler) handleMsg(r io.Reader) error {
 		}
 	}
 
-	return hand(ws, id, cmd, nd)
+	err = hand(ctx, ws, id, cmd, nd)
+	if err != nil {
+		log.Error().Err(err).Msg("dispatch")
+	}
+
+	return nil
 }

pkg/wsapi/auth.go

@@ -1,6 +1,7 @@
 package wsapi
 
 import (
+	"context"
 	"encoding/json"
 	"io"
 
@@ -18,10 +19,10 @@ func (ws *wsSession) sendAuthRequired() error {
 		MsgBase
 		Version string `json:"ha_version"`
 	}{
-		MsgBase{"auth_required"},
+		MsgBase{Type: "auth_required"},
 		ws.b.Version(),
 	}
-	return ws.WriteJSON(&authReq)
+	return ws.conn.WriteJSON(&authReq)
 }
 
 type authMsg struct {
@@ -36,30 +37,33 @@ func (ap *authPhase) msgSchema() interface{} {
 func (ap *authPhase) finishAuth(rt *auth.RefreshToken) {
 	ap.user = rt.User
 	ap.refreshToken = rt
-	ap.h = &cmdHandler{ap.wsSession}
 }
 
 func (ap *authPhase) sendAuthOK() error {
-	return ap.WriteJSON(struct {
+	return ap.conn.WriteJSON(struct {
 		Type    string `json:"type"`
 		Version string `json:"ha_version"`
 	}{Type: "auth_ok", Version: ap.Blas().Version()})
 }
 
 func (ap *authPhase) sendAuthInvalid() error {
-	return ap.WriteJSON(struct {
+	return ap.conn.WriteJSON(struct {
 		Type    string `json:"type"`
 		Message string `json:"message"`
 	}{Type: "auth_ok", Message: "invalid auth"})
 }
 
-func (ap *authPhase) handleMsg(r io.Reader) error {
+func (ap *authPhase) handleMsg(ctx context.Context, r io.Reader) error {
 	var authMsg authMsg
 	err := json.NewDecoder(r).Decode(&authMsg)
 	if err != nil {
 		return err
 	}
 
+	if err := ctx.Err(); err != nil {
+		return err
+	}
+
 	refreshToken := ap.b.ValidateAccessToken(authMsg.AccessToken)
 	if refreshToken != nil {
 		ap.finishAuth(refreshToken)
@@ -68,5 +72,10 @@ func (ap *authPhase) handleMsg(r io.Reader) error {
 
 	log.Error().Str("remote", ap.ec.Request().RemoteAddr).Msg("websocket auth failed")
 
-	return ap.sendAuthInvalid()
+	err = ap.sendAuthInvalid()
+	if err != nil {
+		return err
+	}
+
+	return AuthInvalidErr
 }