Add initial websocket implementation
This commit is contained in:
Morgan Bazalgette
parent
9b296fc8ed
commit
6f9cae0bcd
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@ -28,6 +28,9 @@ func (r router) Peppy(path string, a func(c *fasthttp.RequestCtx, db *sqlx.DB))
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func (r router) GET(path string, handle fasthttp.RequestHandler) {
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r.r.GET(path, wrap(handle))
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}
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func (r router) PlainGET(path string, handle fasthttp.RequestHandler) {
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r.r.GET(path, handle)
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}
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const (
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// \x1b is escape code for ESC
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22
app/start.go
22
app/start.go
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@ -7,11 +7,11 @@ import (
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fhr "github.com/buaazp/fasthttprouter"
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"github.com/getsentry/raven-go"
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"github.com/jmoiron/sqlx"
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"github.com/serenize/snaker"
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"gopkg.in/redis.v5"
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"zxq.co/ripple/rippleapi/app/internals"
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"zxq.co/ripple/rippleapi/app/peppy"
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"zxq.co/ripple/rippleapi/app/v1"
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"zxq.co/ripple/rippleapi/app/websockets"
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"zxq.co/ripple/rippleapi/common"
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)
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@ -22,23 +22,11 @@ var (
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red *redis.Client
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)
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var commonClusterfucks = map[string]string{
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"RegisteredOn": "register_datetime",
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"UsernameAKA": "username_aka",
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}
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// Start begins taking HTTP connections.
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func Start(conf common.Conf, dbO *sqlx.DB) *fhr.Router {
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db = dbO
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cf = conf
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db.MapperFunc(func(s string) string {
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if x, ok := commonClusterfucks[s]; ok {
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return x
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}
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return snaker.CamelToSnake(s)
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})
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rawRouter := fhr.New()
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r := router{rawRouter}
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// TODO: add back gzip
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@ -78,6 +66,9 @@ func Start(conf common.Conf, dbO *sqlx.DB) *fhr.Router {
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// token updater
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go tokenUpdater(db)
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// start websocket
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websockets.Start(red, db)
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// peppyapi
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{
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r.Peppy("/api/get_user", peppy.GetUser)
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@ -152,6 +143,11 @@ func Start(conf common.Conf, dbO *sqlx.DB) *fhr.Router {
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common.PrivilegeManageUser, common.PrivilegeAPIMeta)
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}
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// Websocket API
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{
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r.PlainGET("/api/v1/ws", websockets.WebsocketV1Entry)
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}
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// in the new osu-web, the old endpoints are also in /v1 it seems. So /shrug
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{
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r.Peppy("/api/v1/get_user", peppy.GetUser)
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@ -8,7 +8,8 @@ import (
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"zxq.co/ripple/rippleapi/common"
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)
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type score struct {
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// Score is a score done on Ripple.
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type Score struct {
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ID int `json:"id"`
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BeatmapMD5 string `json:"beatmap_md5"`
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Score int64 `json:"score"`
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@ -31,7 +32,7 @@ type score struct {
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// beatmapScore is to differentiate from userScore, as beatmapScore contains
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// also an user, while userScore contains the beatmap.
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type beatmapScore struct {
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score
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Score
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User userData `json:"user"`
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}
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@ -7,7 +7,7 @@ import (
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)
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type userScore struct {
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score
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Score
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Beatmap beatmap `json:"beatmap"`
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}
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@ -0,0 +1,18 @@
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package websockets
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import (
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"github.com/leavengood/websocket"
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"github.com/valyala/fasthttp"
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)
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var upgrader = websocket.FastHTTPUpgrader{
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Handler: handler,
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CheckOrigin: func(ctx *fasthttp.RequestCtx) bool {
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return true
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},
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}
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// WebsocketV1Entry upgrades a connection to a websocket.
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func WebsocketV1Entry(ctx *fasthttp.RequestCtx) {
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upgrader.UpgradeHandler(ctx)
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}
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@ -0,0 +1,99 @@
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package websockets
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import (
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"encoding/json"
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"sync"
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"sync/atomic"
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"time"
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"github.com/leavengood/websocket"
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)
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var stepNumber uint64
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func handler(rawConn *websocket.Conn) {
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defer rawConn.Close()
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step := atomic.AddUint64(&stepNumber, 1)
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// 5 is a security margin in case
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if step == (1<<10 - 5) {
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atomic.StoreUint64(&stepNumber, 0)
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}
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c := &conn{
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rawConn,
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sync.Mutex{},
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step | uint64(time.Now().UnixNano()<<10),
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}
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c.WriteJSON(TypeConnected, nil)
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defer cleanup(c.ID)
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for {
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var i incomingMessage
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err := c.Conn.ReadJSON(&i)
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if _, ok := err.(*websocket.CloseError); ok {
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return
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}
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if err != nil {
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c.WriteJSON(TypeInvalidMessage, err.Error())
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continue
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}
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f, ok := messageHandler[i.Type]
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if !ok {
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c.WriteJSON(TypeInvalidMessage, "invalid message type")
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continue
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}
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f(c, i)
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}
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}
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type conn struct {
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Conn *websocket.Conn
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Mtx sync.Mutex
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ID uint64
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}
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func (c *conn) WriteJSON(t string, data interface{}) error {
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c.Mtx.Lock()
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err := c.Conn.WriteJSON(newMessage(t, data))
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c.Mtx.Unlock()
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return err
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}
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var messageHandler = map[string]func(c *conn, message incomingMessage){
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TypeSubscribeScores: SubscribeScores,
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}
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// Server Message Types
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const (
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TypeConnected = "connected"
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TypeInvalidMessage = "invalid_message_type"
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TypeSubscribed = "subscribed"
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TypeNewScore = "new_score"
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)
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// Client Message Types
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const (
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TypeSubscribeScores = "subscribe_scores"
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)
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// Message is the wrapped information for a message sent to the client.
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type Message struct {
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Type string `json:"type"`
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Data interface{} `json:"data,omitempty"`
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}
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func newMessage(t string, data interface{}) Message {
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return Message{
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Type: t,
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Data: data,
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}
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}
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type incomingMessage struct {
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Type string `json:"type"`
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Data json.RawMessage `json:"data"`
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}
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@ -0,0 +1,121 @@
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package websockets
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import (
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"encoding/json"
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"fmt"
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"sync"
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"zxq.co/ripple/rippleapi/app/v1"
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)
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type subscribeScoresUser struct {
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User int `json:"user"`
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Modes []int `json:"modes"`
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}
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// SubscribeScores subscribes a connection to score updates.
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func SubscribeScores(c *conn, message incomingMessage) {
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var ssu []subscribeScoresUser
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err := json.Unmarshal(message.Data, &ssu)
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if err != nil {
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c.WriteJSON(TypeInvalidMessage, err.Error())
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return
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}
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scoreSubscriptionsMtx.Lock()
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var found bool
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for idx, el := range scoreSubscriptions {
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// already exists, change the users
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if el.Conn.ID == c.ID {
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found = true
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scoreSubscriptions[idx].Users = ssu
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}
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}
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// if it was not found, we need to add it
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if !found {
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scoreSubscriptions = append(scoreSubscriptions, scoreSubscription{c, ssu})
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}
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scoreSubscriptionsMtx.Unlock()
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c.WriteJSON(TypeSubscribed, message)
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}
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type scoreSubscription struct {
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Conn *conn
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Users []subscribeScoresUser
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}
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var scoreSubscriptions []scoreSubscription
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var scoreSubscriptionsMtx = new(sync.RWMutex)
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func scoreRetriever() {
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ps, err := red.Subscribe("api:score_submission")
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if err != nil {
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fmt.Println(err)
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}
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for {
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msg, err := ps.ReceiveMessage()
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if err != nil {
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fmt.Println(err.Error())
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return
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}
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go handleNewScore(msg.Payload)
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}
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}
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type score struct {
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v1.Score
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UserID int `json:"user_id"`
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}
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func handleNewScore(id string) {
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var s score
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err := db.Get(&s, `
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SELECT
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id, beatmap_md5, score, max_combo, full_combo, mods,
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300_count, 100_count, 50_count, gekis_count, katus_count, misses_count,
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time, play_mode, accuracy, pp, completed, userid AS user_id
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FROM scores WHERE id = ?`, id)
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if err != nil {
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fmt.Println(err)
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return
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}
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scoreSubscriptionsMtx.RLock()
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cp := make([]scoreSubscription, len(scoreSubscriptions))
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copy(cp, scoreSubscriptions)
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scoreSubscriptionsMtx.RUnlock()
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for _, el := range cp {
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if len(el.Users) > 0 && !scoreUserValid(el.Users, s) {
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continue
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}
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el.Conn.WriteJSON(TypeNewScore, s)
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}
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}
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func scoreUserValid(users []subscribeScoresUser, s score) bool {
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for _, u := range users {
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if u.User == s.UserID {
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if len(u.Modes) > 0 {
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if !inModes(u.Modes, s.PlayMode) {
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return false
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}
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}
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return true
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}
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}
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return false
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}
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func inModes(modes []int, i int) bool {
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for _, m := range modes {
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if m == i {
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return true
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}
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}
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return false
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}
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@ -0,0 +1,32 @@
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// Package websockets implements functionality related to the API websockets.
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package websockets
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import (
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"github.com/jmoiron/sqlx"
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"gopkg.in/redis.v5"
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)
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var (
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red *redis.Client
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db *sqlx.DB
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)
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// Start begins websocket functionality
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func Start(r *redis.Client, _db *sqlx.DB) error {
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red = r
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db = _db
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go scoreRetriever()
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return nil
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}
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func cleanup(connID uint64) {
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scoreSubscriptionsMtx.Lock()
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for idx, el := range scoreSubscriptions {
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if el.Conn.ID == connID {
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scoreSubscriptions[idx] = scoreSubscriptions[len(scoreSubscriptions)-1]
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scoreSubscriptions = scoreSubscriptions[:len(scoreSubscriptions)-1]
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break
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}
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}
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scoreSubscriptionsMtx.Unlock()
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}
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21
main.go
21
main.go
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@ -13,6 +13,7 @@ import (
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// Golint pls dont break balls
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_ "github.com/go-sql-driver/mysql"
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"github.com/jmoiron/sqlx"
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"github.com/serenize/snaker"
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"gopkg.in/thehowl/go-osuapi.v1"
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)
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@ -57,6 +58,13 @@ func main() {
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log.Fatalln(err)
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}
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db.MapperFunc(func(s string) string {
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if x, ok := commonClusterfucks[s]; ok {
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return x
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}
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return snaker.CamelToSnake(s)
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})
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beatmapget.Client = osuapi.NewClient(conf.OsuAPIKey)
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beatmapget.DB = db
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@ -64,3 +72,16 @@ func main() {
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startuato(engine.Handler)
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}
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var commonClusterfucks = map[string]string{
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"RegisteredOn": "register_datetime",
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"UsernameAKA": "username_aka",
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"BeatmapMD5": "beatmap_md5",
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"Count300": "300_count",
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"Count100": "100_count",
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"Count50": "50_count",
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"CountGeki": "gekis_count",
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"CountKatu": "katus_count",
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"CountMiss": "misses_count",
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"PP": "pp",
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}
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@ -0,0 +1,8 @@
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# This is the official list of Gorilla WebSocket authors for copyright
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# purposes.
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#
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# Please keep the list sorted.
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Gary Burd <gary@beagledreams.com>
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Joachim Bauch <mail@joachim-bauch.de>
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@ -0,0 +1,22 @@
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Copyright (c) 2013 The Gorilla WebSocket Authors. All rights reserved.
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Redistribution and use in source and binary forms, with or without
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modification, are permitted provided that the following conditions are met:
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Redistributions of source code must retain the above copyright notice, this
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list of conditions and the following disclaimer.
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Redistributions in binary form must reproduce the above copyright notice,
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this list of conditions and the following disclaimer in the documentation
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and/or other materials provided with the distribution.
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THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
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ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
|
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WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
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DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
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FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
|
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DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
|
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SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
|
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CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
|
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OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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@ -0,0 +1,68 @@
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# Gorilla WebSocket
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Gorilla WebSocket is a [Go](http://golang.org/) implementation of the
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[WebSocket](http://www.rfc-editor.org/rfc/rfc6455.txt) protocol.
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*This fork adds support for the Go HTTP package
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[fasthttp](https://github.com/valyala/fasthttp), which is a high performance,
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byte slice oriented alternative to `net/http`.*
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[](https://travis-ci.org/gorilla/websocket)
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[](https://godoc.org/github.com/gorilla/websocket)
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### Documentation
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* [API Reference](http://godoc.org/github.com/gorilla/websocket)
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* [Chat example](https://github.com/gorilla/websocket/tree/master/examples/chat)
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* [Command example](https://github.com/gorilla/websocket/tree/master/examples/command)
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* [Client and server example](https://github.com/gorilla/websocket/tree/master/examples/echo)
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* [File watch example](https://github.com/gorilla/websocket/tree/master/examples/filewatch)
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### Status
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The Gorilla WebSocket package provides a complete and tested implementation of
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the [WebSocket](http://www.rfc-editor.org/rfc/rfc6455.txt) protocol. The
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package API is stable.
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### Installation
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go get github.com/gorilla/websocket
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### Protocol Compliance
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The Gorilla WebSocket package passes the server tests in the [Autobahn Test
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Suite](http://autobahn.ws/testsuite) using the application in the [examples/autobahn
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subdirectory](https://github.com/gorilla/websocket/tree/master/examples/autobahn).
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### Gorilla WebSocket compared with other packages
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<table>
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<tr>
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<th></th>
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<th><a href="http://godoc.org/github.com/gorilla/websocket">github.com/gorilla</a></th>
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<th><a href="http://godoc.org/golang.org/x/net/websocket">golang.org/x/net</a></th>
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</tr>
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<tr>
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<tr><td colspan="3"><a href="http://tools.ietf.org/html/rfc6455">RFC 6455</a> Features</td></tr>
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<tr><td>Passes <a href="http://autobahn.ws/testsuite/">Autobahn Test Suite</a></td><td><a href="https://github.com/gorilla/websocket/tree/master/examples/autobahn">Yes</a></td><td>No</td></tr>
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<tr><td>Receive <a href="https://tools.ietf.org/html/rfc6455#section-5.4">fragmented</a> message<td>Yes</td><td><a href="https://code.google.com/p/go/issues/detail?id=7632">No</a>, see note 1</td></tr>
|
||||
<tr><td>Send <a href="https://tools.ietf.org/html/rfc6455#section-5.5.1">close</a> message</td><td><a href="http://godoc.org/github.com/gorilla/websocket#hdr-Control_Messages">Yes</a></td><td><a href="https://code.google.com/p/go/issues/detail?id=4588">No</a></td></tr>
|
||||
<tr><td>Send <a href="https://tools.ietf.org/html/rfc6455#section-5.5.2">pings</a> and receive <a href="https://tools.ietf.org/html/rfc6455#section-5.5.3">pongs</a></td><td><a href="http://godoc.org/github.com/gorilla/websocket#hdr-Control_Messages">Yes</a></td><td>No</td></tr>
|
||||
<tr><td>Get the <a href="https://tools.ietf.org/html/rfc6455#section-5.6">type</a> of a received data message</td><td>Yes</td><td>Yes, see note 2</td></tr>
|
||||
<tr><td colspan="3">Other Features</tr></td>
|
||||
<tr><td><a href="https://tools.ietf.org/html/rfc7692">Compression Extensions</a></td><td>Experimental</td><td>No</td></tr>
|
||||
<tr><td>Read message using io.Reader</td><td><a href="http://godoc.org/github.com/gorilla/websocket#Conn.NextReader">Yes</a></td><td>No, see note 3</td></tr>
|
||||
<tr><td>Write message using io.WriteCloser</td><td><a href="http://godoc.org/github.com/gorilla/websocket#Conn.NextWriter">Yes</a></td><td>No, see note 3</td></tr>
|
||||
</table>
|
||||
|
||||
Notes:
|
||||
|
||||
1. Large messages are fragmented in [Chrome's new WebSocket implementation](http://www.ietf.org/mail-archive/web/hybi/current/msg10503.html).
|
||||
2. The application can get the type of a received data message by implementing
|
||||
a [Codec marshal](http://godoc.org/golang.org/x/net/websocket#Codec.Marshal)
|
||||
function.
|
||||
3. The go.net io.Reader and io.Writer operate across WebSocket frame boundaries.
|
||||
Read returns when the input buffer is full or a frame boundary is
|
||||
encountered. Each call to Write sends a single frame message. The Gorilla
|
||||
io.Reader and io.WriteCloser operate on a single WebSocket message.
|
||||
|
||||
|
|
@ -0,0 +1,420 @@
|
|||
// Copyright 2013 The Gorilla WebSocket Authors. All rights reserved.
|
||||
// Use of this source code is governed by a BSD-style
|
||||
// license that can be found in the LICENSE file.
|
||||
|
||||
package websocket
|
||||
|
||||
import (
|
||||
"bufio"
|
||||
"bytes"
|
||||
"crypto/tls"
|
||||
"encoding/base64"
|
||||
"errors"
|
||||
"io"
|
||||
"io/ioutil"
|
||||
"net"
|
||||
"net/http"
|
||||
"net/url"
|
||||
"strings"
|
||||
"time"
|
||||
)
|
||||
|
||||
// ErrBadHandshake is returned when the server response to opening handshake is
|
||||
// invalid.
|
||||
var ErrBadHandshake = errors.New("websocket: bad handshake")
|
||||
|
||||
var errInvalidCompression = errors.New("websocket: invalid compression negotiation")
|
||||
|
||||
// NewClient creates a new client connection using the given net connection.
|
||||
// The URL u specifies the host and request URI. Use requestHeader to specify
|
||||
// the origin (Origin), subprotocols (Sec-WebSocket-Protocol) and cookies
|
||||
// (Cookie). Use the response.Header to get the selected subprotocol
|
||||
// (Sec-WebSocket-Protocol) and cookies (Set-Cookie).
|
||||
//
|
||||
// If the WebSocket handshake fails, ErrBadHandshake is returned along with a
|
||||
// non-nil *http.Response so that callers can handle redirects, authentication,
|
||||
// etc.
|
||||
//
|
||||
// Deprecated: Use Dialer instead.
|
||||
func NewClient(netConn net.Conn, u *url.URL, requestHeader http.Header, readBufSize, writeBufSize int) (c *Conn, response *http.Response, err error) {
|
||||
d := Dialer{
|
||||
ReadBufferSize: readBufSize,
|
||||
WriteBufferSize: writeBufSize,
|
||||
NetDial: func(net, addr string) (net.Conn, error) {
|
||||
return netConn, nil
|
||||
},
|
||||
}
|
||||
return d.Dial(u.String(), requestHeader)
|
||||
}
|
||||
|
||||
// A Dialer contains options for connecting to WebSocket server.
|
||||
type Dialer struct {
|
||||
// NetDial specifies the dial function for creating TCP connections. If
|
||||
// NetDial is nil, net.Dial is used.
|
||||
NetDial func(network, addr string) (net.Conn, error)
|
||||
|
||||
// Proxy specifies a function to return a proxy for a given
|
||||
// Request. If the function returns a non-nil error, the
|
||||
// request is aborted with the provided error.
|
||||
// If Proxy is nil or returns a nil *URL, no proxy is used.
|
||||
Proxy func(*http.Request) (*url.URL, error)
|
||||
|
||||
// TLSClientConfig specifies the TLS configuration to use with tls.Client.
|
||||
// If nil, the default configuration is used.
|
||||
TLSClientConfig *tls.Config
|
||||
|
||||
// HandshakeTimeout specifies the duration for the handshake to complete.
|
||||
HandshakeTimeout time.Duration
|
||||
|
||||
// Input and output buffer sizes. If the buffer size is zero, then a
|
||||
// default value of 4096 is used.
|
||||
ReadBufferSize, WriteBufferSize int
|
||||
|
||||
// Subprotocols specifies the client's requested subprotocols.
|
||||
Subprotocols []string
|
||||
|
||||
// EnableCompression specifies if the client should attempt to negotiate
|
||||
// per message compression (RFC 7692). Setting this value to true does not
|
||||
// guarantee that compression will be supported. Currently only "no context
|
||||
// takeover" modes are supported.
|
||||
EnableCompression bool
|
||||
|
||||
// Jar specifies the cookie jar.
|
||||
// If Jar is nil, cookies are not sent in requests and ignored
|
||||
// in responses.
|
||||
Jar http.CookieJar
|
||||
}
|
||||
|
||||
var errMalformedURL = errors.New("malformed ws or wss URL")
|
||||
|
||||
// parseURL parses the URL.
|
||||
//
|
||||
// This function is a replacement for the standard library url.Parse function.
|
||||
// In Go 1.4 and earlier, url.Parse loses information from the path.
|
||||
func parseURL(s string) (*url.URL, error) {
|
||||
// From the RFC:
|
||||
//
|
||||
// ws-URI = "ws:" "//" host [ ":" port ] path [ "?" query ]
|
||||
// wss-URI = "wss:" "//" host [ ":" port ] path [ "?" query ]
|
||||
var u url.URL
|
||||
switch {
|
||||
case strings.HasPrefix(s, "ws://"):
|
||||
u.Scheme = "ws"
|
||||
s = s[len("ws://"):]
|
||||
case strings.HasPrefix(s, "wss://"):
|
||||
u.Scheme = "wss"
|
||||
s = s[len("wss://"):]
|
||||
default:
|
||||
return nil, errMalformedURL
|
||||
}
|
||||
|
||||
if i := strings.Index(s, "?"); i >= 0 {
|
||||
u.RawQuery = s[i+1:]
|
||||
s = s[:i]
|
||||
}
|
||||
|
||||
if i := strings.Index(s, "/"); i >= 0 {
|
||||
u.Opaque = s[i:]
|
||||
s = s[:i]
|
||||
} else {
|
||||
u.Opaque = "/"
|
||||
}
|
||||
|
||||
u.Host = s
|
||||
|
||||
if strings.Contains(u.Host, "@") {
|
||||
// Don't bother parsing user information because user information is
|
||||
// not allowed in websocket URIs.
|
||||
return nil, errMalformedURL
|
||||
}
|
||||
|
||||
return &u, nil
|
||||
}
|
||||
|
||||
func hostPortNoPort(u *url.URL) (hostPort, hostNoPort string) {
|
||||
hostPort = u.Host
|
||||
hostNoPort = u.Host
|
||||
if i := strings.LastIndex(u.Host, ":"); i > strings.LastIndex(u.Host, "]") {
|
||||
hostNoPort = hostNoPort[:i]
|
||||
} else {
|
||||
switch u.Scheme {
|
||||
case "wss":
|
||||
hostPort += ":443"
|
||||
case "https":
|
||||
hostPort += ":443"
|
||||
default:
|
||||
hostPort += ":80"
|
||||
}
|
||||
}
|
||||
return hostPort, hostNoPort
|
||||
}
|
||||
|
||||
// DefaultDialer is a dialer with all fields set to the default zero values.
|
||||
var DefaultDialer = &Dialer{
|
||||
Proxy: http.ProxyFromEnvironment,
|
||||
}
|
||||
|
||||
// Dial creates a new client connection. Use requestHeader to specify the
|
||||
// origin (Origin), subprotocols (Sec-WebSocket-Protocol) and cookies (Cookie).
|
||||
// Use the response.Header to get the selected subprotocol
|
||||
// (Sec-WebSocket-Protocol) and cookies (Set-Cookie).
|
||||
//
|
||||
// If the WebSocket handshake fails, ErrBadHandshake is returned along with a
|
||||
// non-nil *http.Response so that callers can handle redirects, authentication,
|
||||
// etcetera. The response body may not contain the entire response and does not
|
||||
// need to be closed by the application.
|
||||
func (d *Dialer) Dial(urlStr string, requestHeader http.Header) (*Conn, *http.Response, error) {
|
||||
|
||||
if d == nil {
|
||||
d = &Dialer{
|
||||
Proxy: http.ProxyFromEnvironment,
|
||||
}
|
||||
}
|
||||
|
||||
challengeKey, err := generateChallengeKey()
|
||||
if err != nil {
|
||||
return nil, nil, err
|
||||
}
|
||||
|
||||
u, err := parseURL(urlStr)
|
||||
if err != nil {
|
||||
return nil, nil, err
|
||||
}
|
||||
|
||||
switch u.Scheme {
|
||||
case "ws":
|
||||
u.Scheme = "http"
|
||||
case "wss":
|
||||
u.Scheme = "https"
|
||||
default:
|
||||
return nil, nil, errMalformedURL
|
||||
}
|
||||
|
||||
if u.User != nil {
|
||||
// User name and password are not allowed in websocket URIs.
|
||||
return nil, nil, errMalformedURL
|
||||
}
|
||||
|
||||
req := &http.Request{
|
||||
Method: "GET",
|
||||
URL: u,
|
||||
Proto: "HTTP/1.1",
|
||||
ProtoMajor: 1,
|
||||
ProtoMinor: 1,
|
||||
Header: make(http.Header),
|
||||
Host: u.Host,
|
||||
}
|
||||
|
||||
// Set the cookies present in the cookie jar of the dialer
|
||||
if d.Jar != nil {
|
||||
for _, cookie := range d.Jar.Cookies(u) {
|
||||
req.AddCookie(cookie)
|
||||
}
|
||||
}
|
||||
|
||||
// Set the request headers using the capitalization for names and values in
|
||||
// RFC examples. Although the capitalization shouldn't matter, there are
|
||||
// servers that depend on it. The Header.Set method is not used because the
|
||||
// method canonicalizes the header names.
|
||||
req.Header["Upgrade"] = []string{"websocket"}
|
||||
req.Header["Connection"] = []string{"Upgrade"}
|
||||
req.Header["Sec-WebSocket-Key"] = []string{challengeKey}
|
||||
req.Header["Sec-WebSocket-Version"] = []string{"13"}
|
||||
if len(d.Subprotocols) > 0 {
|
||||
req.Header["Sec-WebSocket-Protocol"] = []string{strings.Join(d.Subprotocols, ", ")}
|
||||
}
|
||||
for k, vs := range requestHeader {
|
||||
switch {
|
||||
case k == "Host":
|
||||
if len(vs) > 0 {
|
||||
req.Host = vs[0]
|
||||
}
|
||||
case k == "Upgrade" ||
|
||||
k == "Connection" ||
|
||||
k == "Sec-Websocket-Key" ||
|
||||
k == "Sec-Websocket-Version" ||
|
||||
k == "Sec-Websocket-Extensions" ||
|
||||
(k == "Sec-Websocket-Protocol" && len(d.Subprotocols) > 0):
|
||||
return nil, nil, errors.New("websocket: duplicate header not allowed: " + k)
|
||||
default:
|
||||
req.Header[k] = vs
|
||||
}
|
||||
}
|
||||
|
||||
if d.EnableCompression {
|
||||
req.Header.Set("Sec-Websocket-Extensions", "permessage-deflate; server_no_context_takeover; client_no_context_takeover")
|
||||
}
|
||||
|
||||
hostPort, hostNoPort := hostPortNoPort(u)
|
||||
|
||||
var proxyURL *url.URL
|
||||
// Check wether the proxy method has been configured
|
||||
if d.Proxy != nil {
|
||||
proxyURL, err = d.Proxy(req)
|
||||
}
|
||||
if err != nil {
|
||||
return nil, nil, err
|
||||
}
|
||||
|
||||
var targetHostPort string
|
||||
if proxyURL != nil {
|
||||
targetHostPort, _ = hostPortNoPort(proxyURL)
|
||||
} else {
|
||||
targetHostPort = hostPort
|
||||
}
|
||||
|
||||
var deadline time.Time
|
||||
if d.HandshakeTimeout != 0 {
|
||||
deadline = time.Now().Add(d.HandshakeTimeout)
|
||||
}
|
||||
|
||||
netDial := d.NetDial
|
||||
if netDial == nil {
|
||||
netDialer := &net.Dialer{Deadline: deadline}
|
||||
netDial = netDialer.Dial
|
||||
}
|
||||
|
||||
netConn, err := netDial("tcp", targetHostPort)
|
||||
if err != nil {
|
||||
return nil, nil, err
|
||||
}
|
||||
|
||||
defer func() {
|
||||
if netConn != nil {
|
||||
netConn.Close()
|
||||
}
|
||||
}()
|
||||
|
||||
if err := netConn.SetDeadline(deadline); err != nil {
|
||||
return nil, nil, err
|
||||
}
|
||||
|
||||
if proxyURL != nil {
|
||||
connectHeader := make(http.Header)
|
||||
if user := proxyURL.User; user != nil {
|
||||
proxyUser := user.Username()
|
||||
if proxyPassword, passwordSet := user.Password(); passwordSet {
|
||||
credential := base64.StdEncoding.EncodeToString([]byte(proxyUser + ":" + proxyPassword))
|
||||
connectHeader.Set("Proxy-Authorization", "Basic "+credential)
|
||||
}
|
||||
}
|
||||
connectReq := &http.Request{
|
||||
Method: "CONNECT",
|
||||
URL: &url.URL{Opaque: hostPort},
|
||||
Host: hostPort,
|
||||
Header: connectHeader,
|
||||
}
|
||||
|
||||
connectReq.Write(netConn)
|
||||
|
||||
// Read response.
|
||||
// Okay to use and discard buffered reader here, because
|
||||
// TLS server will not speak until spoken to.
|
||||
br := bufio.NewReader(netConn)
|
||||
resp, err := http.ReadResponse(br, connectReq)
|
||||
if err != nil {
|
||||
return nil, nil, err
|
||||
}
|
||||
if resp.StatusCode != 200 {
|
||||
f := strings.SplitN(resp.Status, " ", 2)
|
||||
return nil, nil, errors.New(f[1])
|
||||
}
|
||||
}
|
||||
|
||||
if u.Scheme == "https" {
|
||||
cfg := cloneTLSConfig(d.TLSClientConfig)
|
||||
if cfg.ServerName == "" {
|
||||
cfg.ServerName = hostNoPort
|
||||
}
|
||||
tlsConn := tls.Client(netConn, cfg)
|
||||
netConn = tlsConn
|
||||
if err := tlsConn.Handshake(); err != nil {
|
||||
return nil, nil, err
|
||||
}
|
||||
if !cfg.InsecureSkipVerify {
|
||||
if err := tlsConn.VerifyHostname(cfg.ServerName); err != nil {
|
||||
return nil, nil, err
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
conn := newConn(netConn, false, d.ReadBufferSize, d.WriteBufferSize)
|
||||
|
||||
if err := req.Write(netConn); err != nil {
|
||||
return nil, nil, err
|
||||
}
|
||||
|
||||
resp, err := http.ReadResponse(conn.br, req)
|
||||
if err != nil {
|
||||
return nil, nil, err
|
||||
}
|
||||
|
||||
if d.Jar != nil {
|
||||
if rc := resp.Cookies(); len(rc) > 0 {
|
||||
d.Jar.SetCookies(u, rc)
|
||||
}
|
||||
}
|
||||
|
||||
if resp.StatusCode != 101 ||
|
||||
!strings.EqualFold(resp.Header.Get("Upgrade"), "websocket") ||
|
||||
!strings.EqualFold(resp.Header.Get("Connection"), "upgrade") ||
|
||||
resp.Header.Get("Sec-Websocket-Accept") != computeAcceptKey(challengeKey) {
|
||||
// Before closing the network connection on return from this
|
||||
// function, slurp up some of the response to aid application
|
||||
// debugging.
|
||||
buf := make([]byte, 1024)
|
||||
n, _ := io.ReadFull(resp.Body, buf)
|
||||
resp.Body = ioutil.NopCloser(bytes.NewReader(buf[:n]))
|
||||
return nil, resp, ErrBadHandshake
|
||||
}
|
||||
|
||||
for _, ext := range parseExtensions(req.Header) {
|
||||
if ext[""] != "permessage-deflate" {
|
||||
continue
|
||||
}
|
||||
_, snct := ext["server_no_context_takeover"]
|
||||
_, cnct := ext["client_no_context_takeover"]
|
||||
if !snct || !cnct {
|
||||
return nil, resp, errInvalidCompression
|
||||
}
|
||||
conn.newCompressionWriter = compressNoContextTakeover
|
||||
conn.newDecompressionReader = decompressNoContextTakeover
|
||||
break
|
||||
}
|
||||
|
||||
resp.Body = ioutil.NopCloser(bytes.NewReader([]byte{}))
|
||||
conn.subprotocol = resp.Header.Get("Sec-Websocket-Protocol")
|
||||
|
||||
netConn.SetDeadline(time.Time{})
|
||||
netConn = nil // to avoid close in defer.
|
||||
return conn, resp, nil
|
||||
}
|
||||
|
||||
// cloneTLSConfig clones all public fields except the fields
|
||||
// SessionTicketsDisabled and SessionTicketKey. This avoids copying the
|
||||
// sync.Mutex in the sync.Once and makes it safe to call cloneTLSConfig on a
|
||||
// config in active use.
|
||||
func cloneTLSConfig(cfg *tls.Config) *tls.Config {
|
||||
if cfg == nil {
|
||||
return &tls.Config{}
|
||||
}
|
||||
return &tls.Config{
|
||||
Rand: cfg.Rand,
|
||||
Time: cfg.Time,
|
||||
Certificates: cfg.Certificates,
|
||||
NameToCertificate: cfg.NameToCertificate,
|
||||
GetCertificate: cfg.GetCertificate,
|
||||
RootCAs: cfg.RootCAs,
|
||||
NextProtos: cfg.NextProtos,
|
||||
ServerName: cfg.ServerName,
|
||||
ClientAuth: cfg.ClientAuth,
|
||||
ClientCAs: cfg.ClientCAs,
|
||||
InsecureSkipVerify: cfg.InsecureSkipVerify,
|
||||
CipherSuites: cfg.CipherSuites,
|
||||
PreferServerCipherSuites: cfg.PreferServerCipherSuites,
|
||||
ClientSessionCache: cfg.ClientSessionCache,
|
||||
MinVersion: cfg.MinVersion,
|
||||
MaxVersion: cfg.MaxVersion,
|
||||
CurvePreferences: cfg.CurvePreferences,
|
||||
}
|
||||
}
|
||||
|
|
@ -0,0 +1,135 @@
|
|||
// Copyright 2017 The Gorilla WebSocket Authors. All rights reserved.
|
||||
// Use of this source code is governed by a BSD-style
|
||||
// license that can be found in the LICENSE file.
|
||||
|
||||
package websocket
|
||||
|
||||
import (
|
||||
"compress/flate"
|
||||
"errors"
|
||||
"io"
|
||||
"strings"
|
||||
"sync"
|
||||
)
|
||||
|
||||
var (
|
||||
flateWriterPool = sync.Pool{New: func() interface{} {
|
||||
fw, _ := flate.NewWriter(nil, 3)
|
||||
return fw
|
||||
}}
|
||||
flateReaderPool = sync.Pool{New: func() interface{} {
|
||||
return flate.NewReader(nil)
|
||||
}}
|
||||
)
|
||||
|
||||
func decompressNoContextTakeover(r io.Reader) io.ReadCloser {
|
||||
const tail =
|
||||
// Add four bytes as specified in RFC
|
||||
"\x00\x00\xff\xff" +
|
||||
// Add final block to squelch unexpected EOF error from flate reader.
|
||||
"\x01\x00\x00\xff\xff"
|
||||
|
||||
fr, _ := flateReaderPool.Get().(io.ReadCloser)
|
||||
fr.(flate.Resetter).Reset(io.MultiReader(r, strings.NewReader(tail)), nil)
|
||||
return &flateReadWrapper{fr}
|
||||
}
|
||||
|
||||
func compressNoContextTakeover(w io.WriteCloser) io.WriteCloser {
|
||||
tw := &truncWriter{w: w}
|
||||
fw, _ := flateWriterPool.Get().(*flate.Writer)
|
||||
fw.Reset(tw)
|
||||
return &flateWriteWrapper{fw: fw, tw: tw}
|
||||
}
|
||||
|
||||
// truncWriter is an io.Writer that writes all but the last four bytes of the
|
||||
// stream to another io.Writer.
|
||||
type truncWriter struct {
|
||||
w io.WriteCloser
|
||||
n int
|
||||
p [4]byte
|
||||
}
|
||||
|
||||
func (w *truncWriter) Write(p []byte) (int, error) {
|
||||
n := 0
|
||||
|
||||
// fill buffer first for simplicity.
|
||||
if w.n < len(w.p) {
|
||||
n = copy(w.p[w.n:], p)
|
||||
p = p[n:]
|
||||
w.n += n
|
||||
if len(p) == 0 {
|
||||
return n, nil
|
||||
}
|
||||
}
|
||||
|
||||
m := len(p)
|
||||
if m > len(w.p) {
|
||||
m = len(w.p)
|
||||
}
|
||||
|
||||
if nn, err := w.w.Write(w.p[:m]); err != nil {
|
||||
return n + nn, err
|
||||
}
|
||||
|
||||
copy(w.p[:], w.p[m:])
|
||||
copy(w.p[len(w.p)-m:], p[len(p)-m:])
|
||||
nn, err := w.w.Write(p[:len(p)-m])
|
||||
return n + nn, err
|
||||
}
|
||||
|
||||
type flateWriteWrapper struct {
|
||||
fw *flate.Writer
|
||||
tw *truncWriter
|
||||
}
|
||||
|
||||
func (w *flateWriteWrapper) Write(p []byte) (int, error) {
|
||||
if w.fw == nil {
|
||||
return 0, errWriteClosed
|
||||
}
|
||||
return w.fw.Write(p)
|
||||
}
|
||||
|
||||
func (w *flateWriteWrapper) Close() error {
|
||||
if w.fw == nil {
|
||||
return errWriteClosed
|
||||
}
|
||||
err1 := w.fw.Flush()
|
||||
flateWriterPool.Put(w.fw)
|
||||
w.fw = nil
|
||||
if w.tw.p != [4]byte{0, 0, 0xff, 0xff} {
|
||||
return errors.New("websocket: internal error, unexpected bytes at end of flate stream")
|
||||
}
|
||||
err2 := w.tw.w.Close()
|
||||
if err1 != nil {
|
||||
return err1
|
||||
}
|
||||
return err2
|
||||
}
|
||||
|
||||
type flateReadWrapper struct {
|
||||
fr io.ReadCloser
|
||||
}
|
||||
|
||||
func (r *flateReadWrapper) Read(p []byte) (int, error) {
|
||||
if r.fr == nil {
|
||||
return 0, io.ErrClosedPipe
|
||||
}
|
||||
n, err := r.fr.Read(p)
|
||||
if err == io.EOF {
|
||||
// Preemptively place the reader back in the pool. This helps with
|
||||
// scenarios where the application does not call NextReader() soon after
|
||||
// this final read.
|
||||
r.Close()
|
||||
}
|
||||
return n, err
|
||||
}
|
||||
|
||||
func (r *flateReadWrapper) Close() error {
|
||||
if r.fr == nil {
|
||||
return io.ErrClosedPipe
|
||||
}
|
||||
err := r.fr.Close()
|
||||
flateReaderPool.Put(r.fr)
|
||||
r.fr = nil
|
||||
return err
|
||||
}
|
||||
File diff suppressed because it is too large
Load Diff
|
|
@ -0,0 +1,18 @@
|
|||
// Copyright 2016 The Gorilla WebSocket Authors. All rights reserved.
|
||||
// Use of this source code is governed by a BSD-style
|
||||
// license that can be found in the LICENSE file.
|
||||
|
||||
// +build go1.5
|
||||
|
||||
package websocket
|
||||
|
||||
import "io"
|
||||
|
||||
func (c *Conn) read(n int) ([]byte, error) {
|
||||
p, err := c.br.Peek(n)
|
||||
if err == io.EOF {
|
||||
err = errUnexpectedEOF
|
||||
}
|
||||
c.br.Discard(len(p))
|
||||
return p, err
|
||||
}
|
||||
|
|
@ -0,0 +1,21 @@
|
|||
// Copyright 2016 The Gorilla WebSocket Authors. All rights reserved.
|
||||
// Use of this source code is governed by a BSD-style
|
||||
// license that can be found in the LICENSE file.
|
||||
|
||||
// +build !go1.5
|
||||
|
||||
package websocket
|
||||
|
||||
import "io"
|
||||
|
||||
func (c *Conn) read(n int) ([]byte, error) {
|
||||
p, err := c.br.Peek(n)
|
||||
if err == io.EOF {
|
||||
err = errUnexpectedEOF
|
||||
}
|
||||
if len(p) > 0 {
|
||||
// advance over the bytes just read
|
||||
io.ReadFull(c.br, p)
|
||||
}
|
||||
return p, err
|
||||
}
|
||||
|
|
@ -0,0 +1,173 @@
|
|||
// Copyright 2013 The Gorilla WebSocket Authors. All rights reserved.
|
||||
// Use of this source code is governed by a BSD-style
|
||||
// license that can be found in the LICENSE file.
|
||||
|
||||
// Package websocket implements the WebSocket protocol defined in RFC 6455.
|
||||
//
|
||||
// Overview
|
||||
//
|
||||
// The Conn type represents a WebSocket connection. A server application uses
|
||||
// the Upgrade function from an Upgrader object with a HTTP request handler
|
||||
// to get a pointer to a Conn:
|
||||
//
|
||||
// var upgrader = websocket.Upgrader{
|
||||
// ReadBufferSize: 1024,
|
||||
// WriteBufferSize: 1024,
|
||||
// }
|
||||
//
|
||||
// func handler(w http.ResponseWriter, r *http.Request) {
|
||||
// conn, err := upgrader.Upgrade(w, r, nil)
|
||||
// if err != nil {
|
||||
// log.Println(err)
|
||||
// return
|
||||
// }
|
||||
// ... Use conn to send and receive messages.
|
||||
// }
|
||||
//
|
||||
// Call the connection's WriteMessage and ReadMessage methods to send and
|
||||
// receive messages as a slice of bytes. This snippet of code shows how to echo
|
||||
// messages using these methods:
|
||||
//
|
||||
// for {
|
||||
// messageType, p, err := conn.ReadMessage()
|
||||
// if err != nil {
|
||||
// return
|
||||
// }
|
||||
// if err = conn.WriteMessage(messageType, p); err != nil {
|
||||
// return err
|
||||
// }
|
||||
// }
|
||||
//
|
||||
// In above snippet of code, p is a []byte and messageType is an int with value
|
||||
// websocket.BinaryMessage or websocket.TextMessage.
|
||||
//
|
||||
// An application can also send and receive messages using the io.WriteCloser
|
||||
// and io.Reader interfaces. To send a message, call the connection NextWriter
|
||||
// method to get an io.WriteCloser, write the message to the writer and close
|
||||
// the writer when done. To receive a message, call the connection NextReader
|
||||
// method to get an io.Reader and read until io.EOF is returned. This snippet
|
||||
// shows how to echo messages using the NextWriter and NextReader methods:
|
||||
//
|
||||
// for {
|
||||
// messageType, r, err := conn.NextReader()
|
||||
// if err != nil {
|
||||
// return
|
||||
// }
|
||||
// w, err := conn.NextWriter(messageType)
|
||||
// if err != nil {
|
||||
// return err
|
||||
// }
|
||||
// if _, err := io.Copy(w, r); err != nil {
|
||||
// return err
|
||||
// }
|
||||
// if err := w.Close(); err != nil {
|
||||
// return err
|
||||
// }
|
||||
// }
|
||||
//
|
||||
// Data Messages
|
||||
//
|
||||
// The WebSocket protocol distinguishes between text and binary data messages.
|
||||
// Text messages are interpreted as UTF-8 encoded text. The interpretation of
|
||||
// binary messages is left to the application.
|
||||
//
|
||||
// This package uses the TextMessage and BinaryMessage integer constants to
|
||||
// identify the two data message types. The ReadMessage and NextReader methods
|
||||
// return the type of the received message. The messageType argument to the
|
||||
// WriteMessage and NextWriter methods specifies the type of a sent message.
|
||||
//
|
||||
// It is the application's responsibility to ensure that text messages are
|
||||
// valid UTF-8 encoded text.
|
||||
//
|
||||
// Control Messages
|
||||
//
|
||||
// The WebSocket protocol defines three types of control messages: close, ping
|
||||
// and pong. Call the connection WriteControl, WriteMessage or NextWriter
|
||||
// methods to send a control message to the peer.
|
||||
//
|
||||
// Connections handle received close messages by sending a close message to the
|
||||
// peer and returning a *CloseError from the the NextReader, ReadMessage or the
|
||||
// message Read method.
|
||||
//
|
||||
// Connections handle received ping and pong messages by invoking callback
|
||||
// functions set with SetPingHandler and SetPongHandler methods. The callback
|
||||
// functions are called from the NextReader, ReadMessage and the message Read
|
||||
// methods.
|
||||
//
|
||||
// The default ping handler sends a pong to the peer. The application's reading
|
||||
// goroutine can block for a short time while the handler writes the pong data
|
||||
// to the connection.
|
||||
//
|
||||
// The application must read the connection to process ping, pong and close
|
||||
// messages sent from the peer. If the application is not otherwise interested
|
||||
// in messages from the peer, then the application should start a goroutine to
|
||||
// read and discard messages from the peer. A simple example is:
|
||||
//
|
||||
// func readLoop(c *websocket.Conn) {
|
||||
// for {
|
||||
// if _, _, err := c.NextReader(); err != nil {
|
||||
// c.Close()
|
||||
// break
|
||||
// }
|
||||
// }
|
||||
// }
|
||||
//
|
||||
// Concurrency
|
||||
//
|
||||
// Connections support one concurrent reader and one concurrent writer.
|
||||
//
|
||||
// Applications are responsible for ensuring that no more than one goroutine
|
||||
// calls the write methods (NextWriter, SetWriteDeadline, WriteMessage,
|
||||
// WriteJSON) concurrently and that no more than one goroutine calls the read
|
||||
// methods (NextReader, SetReadDeadline, ReadMessage, ReadJSON, SetPongHandler,
|
||||
// SetPingHandler) concurrently.
|
||||
//
|
||||
// The Close and WriteControl methods can be called concurrently with all other
|
||||
// methods.
|
||||
//
|
||||
// Origin Considerations
|
||||
//
|
||||
// Web browsers allow Javascript applications to open a WebSocket connection to
|
||||
// any host. It's up to the server to enforce an origin policy using the Origin
|
||||
// request header sent by the browser.
|
||||
//
|
||||
// The Upgrader calls the function specified in the CheckOrigin field to check
|
||||
// the origin. If the CheckOrigin function returns false, then the Upgrade
|
||||
// method fails the WebSocket handshake with HTTP status 403.
|
||||
//
|
||||
// If the CheckOrigin field is nil, then the Upgrader uses a safe default: fail
|
||||
// the handshake if the Origin request header is present and not equal to the
|
||||
// Host request header.
|
||||
//
|
||||
// An application can allow connections from any origin by specifying a
|
||||
// function that always returns true:
|
||||
//
|
||||
// var upgrader = websocket.Upgrader{
|
||||
// CheckOrigin: func(r *http.Request) bool { return true },
|
||||
// }
|
||||
//
|
||||
// The deprecated Upgrade function does not enforce an origin policy. It's the
|
||||
// application's responsibility to check the Origin header before calling
|
||||
// Upgrade.
|
||||
//
|
||||
// Compression
|
||||
//
|
||||
// Per message compression extensions (RFC 7692) are experimentally supported
|
||||
// by this package in a limited capacity. Setting the EnableCompression option
|
||||
// to true in Dialer or Upgrader will attempt to negotiate per message deflate
|
||||
// support. If compression was successfully negotiated with the connection's
|
||||
// peer, any message received in compressed form will be automatically
|
||||
// decompressed. All Read methods will return uncompressed bytes.
|
||||
//
|
||||
// Per message compression of messages written to a connection can be enabled
|
||||
// or disabled by calling the corresponding Conn method:
|
||||
//
|
||||
// conn.EnableWriteCompression(true)
|
||||
//
|
||||
// Currently this package does not support compression with "context takeover".
|
||||
// This means that messages must be compressed and decompressed in isolation,
|
||||
// without retaining sliding window or dictionary state across messages. For
|
||||
// more details refer to RFC 7692.
|
||||
//
|
||||
// Use of compression is experimental and may result in decreased performance.
|
||||
package websocket
|
||||
|
|
@ -0,0 +1,137 @@
|
|||
// Copyright 2015 The Gorilla WebSocket Authors. All rights reserved.
|
||||
// Use of this source code is governed by a BSD-style
|
||||
// license that can be found in the LICENSE file.
|
||||
|
||||
// +build go1.4
|
||||
|
||||
package websocket
|
||||
|
||||
import (
|
||||
"bytes"
|
||||
"net"
|
||||
|
||||
"github.com/valyala/fasthttp"
|
||||
)
|
||||
|
||||
func checkSameOriginFastHTTP(ctx *fasthttp.RequestCtx) bool {
|
||||
return checkSameOriginFromHeaderAndHost(string(ctx.Request.Header.Peek(originHeader)), string(ctx.Host()))
|
||||
}
|
||||
|
||||
func fastHTTPHeaderContainsValue(hdr fasthttp.RequestHeader, header string, value string) bool {
|
||||
result := false
|
||||
matchKey := []byte(header)
|
||||
hdr.VisitAll(func(key []byte, val []byte) {
|
||||
if !result {
|
||||
if bytes.Equal(key, matchKey) {
|
||||
headerValue := string(val)
|
||||
if tokenContainsValue(headerValue, value) {
|
||||
result = true
|
||||
}
|
||||
}
|
||||
}
|
||||
})
|
||||
|
||||
return result
|
||||
}
|
||||
|
||||
// FastHTTPUpgrader is used to upgrade a fasthttp request into a websocket
|
||||
// connection. A Handler function must be provided to receive that connection.
|
||||
type FastHTTPUpgrader struct {
|
||||
// Handler receives a websocket connection after the handshake has been
|
||||
// completed. This must be provided.
|
||||
Handler func(*Conn)
|
||||
|
||||
// ReadBufferSize and WriteBufferSize specify I/O buffer sizes. If a buffer
|
||||
// size is zero, then a default value of 4096 is used. The I/O buffer sizes
|
||||
// do not limit the size of the messages that can be sent or received.
|
||||
ReadBufferSize, WriteBufferSize int
|
||||
|
||||
// Subprotocols specifies the server's supported protocols in order of
|
||||
// preference. If this field is set, then the Upgrade method negotiates a
|
||||
// subprotocol by selecting the first match in this list with a protocol
|
||||
// requested by the client.
|
||||
Subprotocols []string
|
||||
|
||||
// CheckOrigin returns true if the request Origin header is acceptable. If
|
||||
// CheckOrigin is nil, the host in the Origin header must not be set or
|
||||
// must match the host of the request.
|
||||
CheckOrigin func(ctx *fasthttp.RequestCtx) bool
|
||||
}
|
||||
|
||||
var websocketVersionByte = []byte(websocketVersion)
|
||||
|
||||
// UpgradeHandler handles a request for a websocket connection and does all the
|
||||
// checks necessary to ensure the request is valid. If a CheckOrigin function
|
||||
// was provided it will be called, otherwise the Origin will be checked against
|
||||
// the request host value. If a subprotocol has not already been set, the best
|
||||
// choice will be made from the values provided to the upgrader and from the
|
||||
// client.
|
||||
//
|
||||
// Once the request has been verified and the response sent, the connection will
|
||||
// be hijacked and the provided Handler will be called.
|
||||
func (f *FastHTTPUpgrader) UpgradeHandler(ctx *fasthttp.RequestCtx) {
|
||||
if f.Handler == nil {
|
||||
panic("FastHTTPUpgrader does not have a Handler set")
|
||||
}
|
||||
|
||||
if !ctx.IsGet() {
|
||||
ctx.Error("websocket: method not GET", fasthttp.StatusMethodNotAllowed)
|
||||
return
|
||||
}
|
||||
|
||||
if !bytes.Equal(ctx.Request.Header.Peek("Sec-Websocket-Version"), websocketVersionByte) {
|
||||
ctx.Error("websocket: version != 13", fasthttp.StatusBadRequest)
|
||||
return
|
||||
}
|
||||
|
||||
if !fastHTTPHeaderContainsValue(ctx.Request.Header, "Connection", "upgrade") {
|
||||
ctx.Error("websocket: could not find connection header with token 'upgrade'", fasthttp.StatusBadRequest)
|
||||
return
|
||||
}
|
||||
|
||||
if !fastHTTPHeaderContainsValue(ctx.Request.Header, "Upgrade", "websocket") {
|
||||
ctx.Error("websocket: could not find upgrade header with token 'websocket'", fasthttp.StatusBadRequest)
|
||||
return
|
||||
}
|
||||
|
||||
checkOrigin := f.CheckOrigin
|
||||
if checkOrigin == nil {
|
||||
checkOrigin = checkSameOriginFastHTTP
|
||||
}
|
||||
if !checkOrigin(ctx) {
|
||||
ctx.Error("websocket: origin not allowed", fasthttp.StatusForbidden)
|
||||
return
|
||||
}
|
||||
|
||||
challengeKey := ctx.Request.Header.Peek("Sec-Websocket-Key")
|
||||
if len(challengeKey) == 0 {
|
||||
ctx.Error("websocket: key missing or blank", fasthttp.StatusBadRequest)
|
||||
return
|
||||
}
|
||||
|
||||
ctx.SetStatusCode(fasthttp.StatusSwitchingProtocols)
|
||||
ctx.Response.Header.Set("Upgrade", "websocket")
|
||||
ctx.Response.Header.Set("Connection", "Upgrade")
|
||||
ctx.Response.Header.Set("Sec-WebSocket-Accept", computeAcceptKeyByte(challengeKey))
|
||||
|
||||
// The subprotocol may have already been set in the response
|
||||
subprotocol := string(ctx.Response.Header.Peek(protocolHeader))
|
||||
if subprotocol == "" {
|
||||
// Find the best protocol, if any
|
||||
clientProtocols := subprotocolsFromHeader(string(ctx.Request.Header.Peek(protocolHeader)))
|
||||
if len(clientProtocols) != 0 {
|
||||
subprotocol = matchSubprotocol(clientProtocols, f.Subprotocols)
|
||||
if subprotocol != "" {
|
||||
ctx.Response.Header.Set(protocolHeader, subprotocol)
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
ctx.Hijack(func(conn net.Conn) {
|
||||
c := newConn(conn, true, f.ReadBufferSize, f.WriteBufferSize)
|
||||
if subprotocol != "" {
|
||||
c.subprotocol = subprotocol
|
||||
}
|
||||
f.Handler(c)
|
||||
})
|
||||
}
|
||||
|
|
@ -0,0 +1,55 @@
|
|||
// Copyright 2013 The Gorilla WebSocket Authors. All rights reserved.
|
||||
// Use of this source code is governed by a BSD-style
|
||||
// license that can be found in the LICENSE file.
|
||||
|
||||
package websocket
|
||||
|
||||
import (
|
||||
"encoding/json"
|
||||
"io"
|
||||
)
|
||||
|
||||
// WriteJSON is deprecated, use c.WriteJSON instead.
|
||||
func WriteJSON(c *Conn, v interface{}) error {
|
||||
return c.WriteJSON(v)
|
||||
}
|
||||
|
||||
// WriteJSON writes the JSON encoding of v to the connection.
|
||||
//
|
||||
// See the documentation for encoding/json Marshal for details about the
|
||||
// conversion of Go values to JSON.
|
||||
func (c *Conn) WriteJSON(v interface{}) error {
|
||||
w, err := c.NextWriter(TextMessage)
|
||||
if err != nil {
|
||||
return err
|
||||
}
|
||||
err1 := json.NewEncoder(w).Encode(v)
|
||||
err2 := w.Close()
|
||||
if err1 != nil {
|
||||
return err1
|
||||
}
|
||||
return err2
|
||||
}
|
||||
|
||||
// ReadJSON is deprecated, use c.ReadJSON instead.
|
||||
func ReadJSON(c *Conn, v interface{}) error {
|
||||
return c.ReadJSON(v)
|
||||
}
|
||||
|
||||
// ReadJSON reads the next JSON-encoded message from the connection and stores
|
||||
// it in the value pointed to by v.
|
||||
//
|
||||
// See the documentation for the encoding/json Unmarshal function for details
|
||||
// about the conversion of JSON to a Go value.
|
||||
func (c *Conn) ReadJSON(v interface{}) error {
|
||||
_, r, err := c.NextReader()
|
||||
if err != nil {
|
||||
return err
|
||||
}
|
||||
err = json.NewDecoder(r).Decode(v)
|
||||
if err == io.EOF {
|
||||
// One value is expected in the message.
|
||||
err = io.ErrUnexpectedEOF
|
||||
}
|
||||
return err
|
||||
}
|
||||
|
|
@ -0,0 +1,55 @@
|
|||
// Copyright 2016 The Gorilla WebSocket Authors. All rights reserved. Use of
|
||||
// this source code is governed by a BSD-style license that can be found in the
|
||||
// LICENSE file.
|
||||
|
||||
// +build !appengine
|
||||
|
||||
package websocket
|
||||
|
||||
import "unsafe"
|
||||
|
||||
const wordSize = int(unsafe.Sizeof(uintptr(0)))
|
||||
|
||||
func maskBytes(key [4]byte, pos int, b []byte) int {
|
||||
|
||||
// Mask one byte at a time for small buffers.
|
||||
if len(b) < 2*wordSize {
|
||||
for i := range b {
|
||||
b[i] ^= key[pos&3]
|
||||
pos++
|
||||
}
|
||||
return pos & 3
|
||||
}
|
||||
|
||||
// Mask one byte at a time to word boundary.
|
||||
if n := int(uintptr(unsafe.Pointer(&b[0]))) % wordSize; n != 0 {
|
||||
n = wordSize - n
|
||||
for i := range b[:n] {
|
||||
b[i] ^= key[pos&3]
|
||||
pos++
|
||||
}
|
||||
b = b[n:]
|
||||
}
|
||||
|
||||
// Create aligned word size key.
|
||||
var k [wordSize]byte
|
||||
for i := range k {
|
||||
k[i] = key[(pos+i)&3]
|
||||
}
|
||||
kw := *(*uintptr)(unsafe.Pointer(&k))
|
||||
|
||||
// Mask one word at a time.
|
||||
n := (len(b) / wordSize) * wordSize
|
||||
for i := 0; i < n; i += wordSize {
|
||||
*(*uintptr)(unsafe.Pointer(uintptr(unsafe.Pointer(&b[0])) + uintptr(i))) ^= kw
|
||||
}
|
||||
|
||||
// Mask one byte at a time for remaining bytes.
|
||||
b = b[n:]
|
||||
for i := range b {
|
||||
b[i] ^= key[pos&3]
|
||||
pos++
|
||||
}
|
||||
|
||||
return pos & 3
|
||||
}
|
||||
|
|
@ -0,0 +1,15 @@
|
|||
// Copyright 2016 The Gorilla WebSocket Authors. All rights reserved. Use of
|
||||
// this source code is governed by a BSD-style license that can be found in the
|
||||
// LICENSE file.
|
||||
|
||||
// +build appengine
|
||||
|
||||
package websocket
|
||||
|
||||
func maskBytes(key [4]byte, pos int, b []byte) int {
|
||||
for i := range b {
|
||||
b[i] ^= key[pos&3]
|
||||
pos++
|
||||
}
|
||||
return pos & 3
|
||||
}
|
||||
|
|
@ -0,0 +1,314 @@
|
|||
// Copyright 2013-2015 The Gorilla WebSocket Authors. All rights reserved.
|
||||
// Use of this source code is governed by a BSD-style
|
||||
// license that can be found in the LICENSE file.
|
||||
|
||||
package websocket
|
||||
|
||||
import (
|
||||
"bufio"
|
||||
"errors"
|
||||
"net"
|
||||
"net/http"
|
||||
"net/url"
|
||||
"strings"
|
||||
"time"
|
||||
)
|
||||
|
||||
const (
|
||||
originHeader = "Origin"
|
||||
protocolHeader = "Sec-Websocket-Protocol"
|
||||
websocketVersion = "13"
|
||||
)
|
||||
|
||||
// HandshakeError describes an error with the handshake from the peer.
|
||||
type HandshakeError struct {
|
||||
message string
|
||||
}
|
||||
|
||||
func (e HandshakeError) Error() string { return e.message }
|
||||
|
||||
// Upgrader specifies parameters for upgrading an HTTP connection to a
|
||||
// WebSocket connection.
|
||||
type Upgrader struct {
|
||||
// HandshakeTimeout specifies the duration for the handshake to complete.
|
||||
HandshakeTimeout time.Duration
|
||||
|
||||
// ReadBufferSize and WriteBufferSize specify I/O buffer sizes. If a buffer
|
||||
// size is zero, then a default value of 4096 is used. The I/O buffer sizes
|
||||
// do not limit the size of the messages that can be sent or received.
|
||||
ReadBufferSize, WriteBufferSize int
|
||||
|
||||
// Subprotocols specifies the server's supported protocols in order of
|
||||
// preference. If this field is set, then the Upgrade method negotiates a
|
||||
// subprotocol by selecting the first match in this list with a protocol
|
||||
// requested by the client.
|
||||
Subprotocols []string
|
||||
|
||||
// Error specifies the function for generating HTTP error responses. If Error
|
||||
// is nil, then http.Error is used to generate the HTTP response.
|
||||
Error func(w http.ResponseWriter, r *http.Request, status int, reason error)
|
||||
|
||||
// CheckOrigin returns true if the request Origin header is acceptable. If
|
||||
// CheckOrigin is nil, the host in the Origin header must not be set or
|
||||
// must match the host of the request.
|
||||
CheckOrigin func(r *http.Request) bool
|
||||
|
||||
// EnableCompression specify if the server should attempt to negotiate per
|
||||
// message compression (RFC 7692). Setting this value to true does not
|
||||
// guarantee that compression will be supported. Currently only "no context
|
||||
// takeover" modes are supported.
|
||||
EnableCompression bool
|
||||
}
|
||||
|
||||
func (u *Upgrader) returnError(w http.ResponseWriter, r *http.Request, status int, reason string) (*Conn, error) {
|
||||
err := HandshakeError{reason}
|
||||
if u.Error != nil {
|
||||
u.Error(w, r, status, err)
|
||||
} else {
|
||||
w.Header().Set("Sec-Websocket-Version", "13")
|
||||
http.Error(w, http.StatusText(status), status)
|
||||
}
|
||||
return nil, err
|
||||
}
|
||||
|
||||
// checkSameOrigin returns true if the origin is not set or is equal to the request host.
|
||||
func checkSameOrigin(r *http.Request) bool {
|
||||
origin := r.Header[originHeader]
|
||||
if len(origin) == 0 {
|
||||
return true
|
||||
}
|
||||
return checkSameOriginFromHeaderAndHost(origin[0], r.Host)
|
||||
}
|
||||
|
||||
func checkSameOriginFromHeaderAndHost(origin, reqHost string) bool {
|
||||
if len(origin) == 0 {
|
||||
return true
|
||||
}
|
||||
u, err := url.Parse(origin)
|
||||
if err != nil {
|
||||
return false
|
||||
}
|
||||
return u.Host == reqHost
|
||||
}
|
||||
|
||||
func (u *Upgrader) selectSubprotocol(r *http.Request, responseHeader http.Header) string {
|
||||
if u.Subprotocols != nil {
|
||||
return matchSubprotocol(Subprotocols(r), u.Subprotocols)
|
||||
} else if responseHeader != nil {
|
||||
return responseHeader.Get(protocolHeader)
|
||||
}
|
||||
return ""
|
||||
}
|
||||
|
||||
func matchSubprotocol(clientProtocols, serverProtocols []string) string {
|
||||
for _, serverProtocol := range serverProtocols {
|
||||
for _, clientProtocol := range clientProtocols {
|
||||
if clientProtocol == serverProtocol {
|
||||
return clientProtocol
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
return ""
|
||||
}
|
||||
|
||||
// Upgrade upgrades the HTTP server connection to the WebSocket protocol.
|
||||
//
|
||||
// The responseHeader is included in the response to the client's upgrade
|
||||
// request. Use the responseHeader to specify cookies (Set-Cookie) and the
|
||||
// application negotiated subprotocol (Sec-Websocket-Protocol).
|
||||
//
|
||||
// If the upgrade fails, then Upgrade replies to the client with an HTTP error
|
||||
// response.
|
||||
func (u *Upgrader) Upgrade(w http.ResponseWriter, r *http.Request, responseHeader http.Header) (*Conn, error) {
|
||||
if r.Method != "GET" {
|
||||
return u.returnError(w, r, http.StatusMethodNotAllowed, "websocket: method not GET")
|
||||
}
|
||||
|
||||
if _, ok := responseHeader["Sec-Websocket-Extensions"]; ok {
|
||||
return u.returnError(w, r, http.StatusInternalServerError, "websocket: application specific Sec-Websocket-Extensions headers are unsupported")
|
||||
}
|
||||
|
||||
if !tokenListContainsValue(r.Header, "Sec-Websocket-Version", "13") {
|
||||
return u.returnError(w, r, http.StatusBadRequest, "websocket: version != 13")
|
||||
}
|
||||
|
||||
if !tokenListContainsValue(r.Header, "Connection", "upgrade") {
|
||||
return u.returnError(w, r, http.StatusBadRequest, "websocket: could not find connection header with token 'upgrade'")
|
||||
}
|
||||
|
||||
if !tokenListContainsValue(r.Header, "Upgrade", "websocket") {
|
||||
return u.returnError(w, r, http.StatusBadRequest, "websocket: could not find upgrade header with token 'websocket'")
|
||||
}
|
||||
|
||||
checkOrigin := u.CheckOrigin
|
||||
if checkOrigin == nil {
|
||||
checkOrigin = checkSameOrigin
|
||||
}
|
||||
if !checkOrigin(r) {
|
||||
return u.returnError(w, r, http.StatusForbidden, "websocket: origin not allowed")
|
||||
}
|
||||
|
||||
challengeKey := r.Header.Get("Sec-Websocket-Key")
|
||||
if challengeKey == "" {
|
||||
return u.returnError(w, r, http.StatusBadRequest, "websocket: key missing or blank")
|
||||
}
|
||||
|
||||
subprotocol := u.selectSubprotocol(r, responseHeader)
|
||||
|
||||
// Negotiate PMCE
|
||||
var compress bool
|
||||
if u.EnableCompression {
|
||||
for _, ext := range parseExtensions(r.Header) {
|
||||
if ext[""] != "permessage-deflate" {
|
||||
continue
|
||||
}
|
||||
compress = true
|
||||
break
|
||||
}
|
||||
}
|
||||
|
||||
var (
|
||||
netConn net.Conn
|
||||
br *bufio.Reader
|
||||
err error
|
||||
)
|
||||
|
||||
h, ok := w.(http.Hijacker)
|
||||
if !ok {
|
||||
return u.returnError(w, r, http.StatusInternalServerError, "websocket: response does not implement http.Hijacker")
|
||||
}
|
||||
var rw *bufio.ReadWriter
|
||||
netConn, rw, err = h.Hijack()
|
||||
if err != nil {
|
||||
return u.returnError(w, r, http.StatusInternalServerError, err.Error())
|
||||
}
|
||||
br = rw.Reader
|
||||
|
||||
if br.Buffered() > 0 {
|
||||
netConn.Close()
|
||||
return nil, errors.New("websocket: client sent data before handshake is complete")
|
||||
}
|
||||
|
||||
c := newConn(netConn, true, u.ReadBufferSize, u.WriteBufferSize)
|
||||
c.subprotocol = subprotocol
|
||||
|
||||
if compress {
|
||||
c.newCompressionWriter = compressNoContextTakeover
|
||||
c.newDecompressionReader = decompressNoContextTakeover
|
||||
}
|
||||
|
||||
p := c.writeBuf[:0]
|
||||
p = append(p, "HTTP/1.1 101 Switching Protocols\r\nUpgrade: websocket\r\nConnection: Upgrade\r\nSec-WebSocket-Accept: "...)
|
||||
p = append(p, computeAcceptKey(challengeKey)...)
|
||||
p = append(p, "\r\n"...)
|
||||
if c.subprotocol != "" {
|
||||
p = append(p, "Sec-Websocket-Protocol: "...)
|
||||
p = append(p, c.subprotocol...)
|
||||
p = append(p, "\r\n"...)
|
||||
}
|
||||
if compress {
|
||||
p = append(p, "Sec-Websocket-Extensions: permessage-deflate; server_no_context_takeover; client_no_context_takeover\r\n"...)
|
||||
}
|
||||
for k, vs := range responseHeader {
|
||||
if k == protocolHeader {
|
||||
continue
|
||||
}
|
||||
for _, v := range vs {
|
||||
p = append(p, k...)
|
||||
p = append(p, ": "...)
|
||||
for i := 0; i < len(v); i++ {
|
||||
b := v[i]
|
||||
if b <= 31 {
|
||||
// prevent response splitting.
|
||||
b = ' '
|
||||
}
|
||||
p = append(p, b)
|
||||
}
|
||||
p = append(p, "\r\n"...)
|
||||
}
|
||||
}
|
||||
p = append(p, "\r\n"...)
|
||||
|
||||
// Clear deadlines set by HTTP server.
|
||||
netConn.SetDeadline(time.Time{})
|
||||
|
||||
if u.HandshakeTimeout > 0 {
|
||||
netConn.SetWriteDeadline(time.Now().Add(u.HandshakeTimeout))
|
||||
}
|
||||
if _, err = netConn.Write(p); err != nil {
|
||||
netConn.Close()
|
||||
return nil, err
|
||||
}
|
||||
if u.HandshakeTimeout > 0 {
|
||||
netConn.SetWriteDeadline(time.Time{})
|
||||
}
|
||||
|
||||
return c, nil
|
||||
}
|
||||
|
||||
// Upgrade upgrades the HTTP server connection to the WebSocket protocol.
|
||||
//
|
||||
// This function is deprecated, use websocket.Upgrader instead.
|
||||
//
|
||||
// The application is responsible for checking the request origin before
|
||||
// calling Upgrade. An example implementation of the same origin policy is:
|
||||
//
|
||||
// if req.Header.Get("Origin") != "http://"+req.Host {
|
||||
// http.Error(w, "Origin not allowed", 403)
|
||||
// return
|
||||
// }
|
||||
//
|
||||
// If the endpoint supports subprotocols, then the application is responsible
|
||||
// for negotiating the protocol used on the connection. Use the Subprotocols()
|
||||
// function to get the subprotocols requested by the client. Use the
|
||||
// Sec-Websocket-Protocol response header to specify the subprotocol selected
|
||||
// by the application.
|
||||
//
|
||||
// The responseHeader is included in the response to the client's upgrade
|
||||
// request. Use the responseHeader to specify cookies (Set-Cookie) and the
|
||||
// negotiated subprotocol (Sec-Websocket-Protocol).
|
||||
//
|
||||
// The connection buffers IO to the underlying network connection. The
|
||||
// readBufSize and writeBufSize parameters specify the size of the buffers to
|
||||
// use. Messages can be larger than the buffers.
|
||||
//
|
||||
// If the request is not a valid WebSocket handshake, then Upgrade returns an
|
||||
// error of type HandshakeError. Applications should handle this error by
|
||||
// replying to the client with an HTTP error response.
|
||||
func Upgrade(w http.ResponseWriter, r *http.Request, responseHeader http.Header, readBufSize, writeBufSize int) (*Conn, error) {
|
||||
u := Upgrader{ReadBufferSize: readBufSize, WriteBufferSize: writeBufSize}
|
||||
u.Error = func(w http.ResponseWriter, r *http.Request, status int, reason error) {
|
||||
// don't return errors to maintain backwards compatibility
|
||||
}
|
||||
u.CheckOrigin = func(r *http.Request) bool {
|
||||
// allow all connections by default
|
||||
return true
|
||||
}
|
||||
return u.Upgrade(w, r, responseHeader)
|
||||
}
|
||||
|
||||
// Subprotocols returns the subprotocols requested by the client in the
|
||||
// Sec-Websocket-Protocol header.
|
||||
func Subprotocols(r *http.Request) []string {
|
||||
return subprotocolsFromHeader(r.Header.Get(protocolHeader))
|
||||
}
|
||||
|
||||
func subprotocolsFromHeader(header string) []string {
|
||||
h := strings.TrimSpace(header)
|
||||
if h == "" {
|
||||
return nil
|
||||
}
|
||||
protocols := strings.Split(h, ",")
|
||||
for i := range protocols {
|
||||
protocols[i] = strings.TrimSpace(protocols[i])
|
||||
}
|
||||
return protocols
|
||||
}
|
||||
|
||||
// IsWebSocketUpgrade returns true if the client requested upgrade to the
|
||||
// WebSocket protocol.
|
||||
func IsWebSocketUpgrade(r *http.Request) bool {
|
||||
return tokenListContainsValue(r.Header, "Connection", "upgrade") &&
|
||||
tokenListContainsValue(r.Header, "Upgrade", "websocket")
|
||||
}
|
||||
|
|
@ -0,0 +1,227 @@
|
|||
// Copyright 2013-2015 The Gorilla WebSocket Authors. All rights reserved.
|
||||
// Use of this source code is governed by a BSD-style
|
||||
// license that can be found in the LICENSE file.
|
||||
|
||||
package websocket
|
||||
|
||||
import (
|
||||
"crypto/rand"
|
||||
"crypto/sha1"
|
||||
"encoding/base64"
|
||||
"io"
|
||||
"net/http"
|
||||
"strings"
|
||||
)
|
||||
|
||||
var keyGUID = []byte("258EAFA5-E914-47DA-95CA-C5AB0DC85B11")
|
||||
|
||||
func computeAcceptKey(challengeKey string) string {
|
||||
return computeAcceptKeyByte([]byte(challengeKey))
|
||||
}
|
||||
|
||||
func computeAcceptKeyByte(challengeKey []byte) string {
|
||||
h := sha1.New()
|
||||
h.Write(challengeKey)
|
||||
h.Write(keyGUID)
|
||||
return base64.StdEncoding.EncodeToString(h.Sum(nil))
|
||||
}
|
||||
|
||||
func generateChallengeKey() (string, error) {
|
||||
p := make([]byte, 16)
|
||||
if _, err := io.ReadFull(rand.Reader, p); err != nil {
|
||||
return "", err
|
||||
}
|
||||
return base64.StdEncoding.EncodeToString(p), nil
|
||||
}
|
||||
|
||||
// Octet types from RFC 2616.
|
||||
var octetTypes [256]byte
|
||||
|
||||
const (
|
||||
isTokenOctet = 1 << iota
|
||||
isSpaceOctet
|
||||
)
|
||||
|
||||
func init() {
|
||||
// From RFC 2616
|
||||
//
|
||||
// OCTET = <any 8-bit sequence of data>
|
||||
// CHAR = <any US-ASCII character (octets 0 - 127)>
|
||||
// CTL = <any US-ASCII control character (octets 0 - 31) and DEL (127)>
|
||||
// CR = <US-ASCII CR, carriage return (13)>
|
||||
// LF = <US-ASCII LF, linefeed (10)>
|
||||
// SP = <US-ASCII SP, space (32)>
|
||||
// HT = <US-ASCII HT, horizontal-tab (9)>
|
||||
// <"> = <US-ASCII double-quote mark (34)>
|
||||
// CRLF = CR LF
|
||||
// LWS = [CRLF] 1*( SP | HT )
|
||||
// TEXT = <any OCTET except CTLs, but including LWS>
|
||||
// separators = "(" | ")" | "<" | ">" | "@" | "," | ";" | ":" | "\" | <">
|
||||
// | "/" | "[" | "]" | "?" | "=" | "{" | "}" | SP | HT
|
||||
// token = 1*<any CHAR except CTLs or separators>
|
||||
// qdtext = <any TEXT except <">>
|
||||
|
||||
for c := 0; c < 256; c++ {
|
||||
var t byte
|
||||
isCtl := c <= 31 || c == 127
|
||||
isChar := 0 <= c && c <= 127
|
||||
isSeparator := strings.IndexRune(" \t\"(),/:;<=>?@[]\\{}", rune(c)) >= 0
|
||||
if strings.IndexRune(" \t\r\n", rune(c)) >= 0 {
|
||||
t |= isSpaceOctet
|
||||
}
|
||||
if isChar && !isCtl && !isSeparator {
|
||||
t |= isTokenOctet
|
||||
}
|
||||
octetTypes[c] = t
|
||||
}
|
||||
}
|
||||
|
||||
func skipSpace(s string) (rest string) {
|
||||
i := 0
|
||||
for ; i < len(s); i++ {
|
||||
if octetTypes[s[i]]&isSpaceOctet == 0 {
|
||||
break
|
||||
}
|
||||
}
|
||||
return s[i:]
|
||||
}
|
||||
|
||||
func nextToken(s string) (token, rest string) {
|
||||
i := 0
|
||||
for ; i < len(s); i++ {
|
||||
if octetTypes[s[i]]&isTokenOctet == 0 {
|
||||
break
|
||||
}
|
||||
}
|
||||
return s[:i], s[i:]
|
||||
}
|
||||
|
||||
func nextTokenOrQuoted(s string) (value string, rest string) {
|
||||
if !strings.HasPrefix(s, "\"") {
|
||||
v, r := nextToken(s)
|
||||
return v, r
|
||||
}
|
||||
s = s[1:]
|
||||
for i := 0; i < len(s); i++ {
|
||||
switch s[i] {
|
||||
case '"':
|
||||
return s[:i], s[i+1:]
|
||||
case '\\':
|
||||
p := make([]byte, len(s)-1)
|
||||
j := copy(p, s[:i])
|
||||
escape := true
|
||||
for i = i + 1; i < len(s); i++ {
|
||||
b := s[i]
|
||||
switch {
|
||||
case escape:
|
||||
escape = false
|
||||
p[j] = b
|
||||
j += 1
|
||||
case b == '\\':
|
||||
escape = true
|
||||
case b == '"':
|
||||
return string(p[:j]), s[i+1:]
|
||||
default:
|
||||
p[j] = b
|
||||
j += 1
|
||||
}
|
||||
}
|
||||
return "", ""
|
||||
}
|
||||
}
|
||||
return "", ""
|
||||
}
|
||||
|
||||
// tokenContainsValue takes a string and tokenizes it, checking
|
||||
// to see if any of the values match a value, returning true if so,
|
||||
// false otherwise
|
||||
func tokenContainsValue(token string, value string) bool {
|
||||
for {
|
||||
var t string
|
||||
t, token = nextToken(skipSpace(token))
|
||||
if t == "" {
|
||||
return false
|
||||
}
|
||||
token = skipSpace(token)
|
||||
if token != "" && token[0] != ',' {
|
||||
return false
|
||||
}
|
||||
if strings.EqualFold(t, value) {
|
||||
return true
|
||||
}
|
||||
if token == "" {
|
||||
return false
|
||||
}
|
||||
token = token[1:]
|
||||
}
|
||||
}
|
||||
|
||||
// tokenListContainsValue returns true if the 1#token header with the given
|
||||
// name contains token.
|
||||
func tokenListContainsValue(header http.Header, name string, value string) bool {
|
||||
for _, s := range header[name] {
|
||||
if tokenContainsValue(s, value) {
|
||||
return true
|
||||
}
|
||||
}
|
||||
return false
|
||||
}
|
||||
|
||||
// parseExtensiosn parses WebSocket extensions from a header.
|
||||
func parseExtensions(header http.Header) []map[string]string {
|
||||
|
||||
// From RFC 6455:
|
||||
//
|
||||
// Sec-WebSocket-Extensions = extension-list
|
||||
// extension-list = 1#extension
|
||||
// extension = extension-token *( ";" extension-param )
|
||||
// extension-token = registered-token
|
||||
// registered-token = token
|
||||
// extension-param = token [ "=" (token | quoted-string) ]
|
||||
// ;When using the quoted-string syntax variant, the value
|
||||
// ;after quoted-string unescaping MUST conform to the
|
||||
// ;'token' ABNF.
|
||||
|
||||
var result []map[string]string
|
||||
headers:
|
||||
for _, s := range header["Sec-Websocket-Extensions"] {
|
||||
for {
|
||||
var t string
|
||||
t, s = nextToken(skipSpace(s))
|
||||
if t == "" {
|
||||
continue headers
|
||||
}
|
||||
ext := map[string]string{"": t}
|
||||
for {
|
||||
s = skipSpace(s)
|
||||
if !strings.HasPrefix(s, ";") {
|
||||
break
|
||||
}
|
||||
var k string
|
||||
k, s = nextToken(skipSpace(s[1:]))
|
||||
if k == "" {
|
||||
continue headers
|
||||
}
|
||||
s = skipSpace(s)
|
||||
var v string
|
||||
if strings.HasPrefix(s, "=") {
|
||||
v, s = nextTokenOrQuoted(skipSpace(s[1:]))
|
||||
s = skipSpace(s)
|
||||
}
|
||||
if s != "" && s[0] != ',' && s[0] != ';' {
|
||||
continue headers
|
||||
}
|
||||
ext[k] = v
|
||||
}
|
||||
if s != "" && s[0] != ',' {
|
||||
continue headers
|
||||
}
|
||||
result = append(result, ext)
|
||||
if s == "" {
|
||||
continue headers
|
||||
}
|
||||
s = s[1:]
|
||||
}
|
||||
}
|
||||
return result
|
||||
}
|
||||
|
|
@ -74,6 +74,12 @@
|
|||
"revision": "cb6bfca970f6908083f26f39a79009d608efd5cd",
|
||||
"revisionTime": "2016-10-16T15:41:25Z"
|
||||
},
|
||||
{
|
||||
"checksumSHA1": "n10276aHoXupg649LyC5MpLVc3M=",
|
||||
"path": "github.com/leavengood/websocket",
|
||||
"revision": "470559ebf58e05eb72622724e17269a20de5cd39",
|
||||
"revisionTime": "2017-01-04T14:51:53Z"
|
||||
},
|
||||
{
|
||||
"checksumSHA1": "076hAQdt7gF8W6O4yA/x0uNFEtc=",
|
||||
"path": "github.com/rcrowley/goagain",
|
||||
|
|
|
|||
Loading…
Reference in New Issue