mirror of
https://github.com/Sagit-chu/flvx.git
synced 2026-10-13 04:36:37 +08:00
init
This commit is contained in:
qaq
@@ -0,0 +1,38 @@
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package mws
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import (
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"net"
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"github.com/go-gost/x/internal/util/mux"
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)
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type muxSession struct {
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conn net.Conn
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session *mux.Session
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}
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func (session *muxSession) GetConn() (net.Conn, error) {
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return session.session.GetConn()
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}
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func (session *muxSession) Accept() (net.Conn, error) {
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return session.session.Accept()
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}
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func (session *muxSession) Close() error {
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if session.session == nil {
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return nil
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}
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return session.session.Close()
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}
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func (session *muxSession) IsClosed() bool {
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if session.session == nil {
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return true
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}
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return session.session.IsClosed()
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}
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func (session *muxSession) NumStreams() int {
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return session.session.NumStreams()
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}
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@@ -0,0 +1,210 @@
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package mws
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import (
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"context"
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"errors"
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"net"
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"net/url"
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"sync"
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"time"
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"github.com/go-gost/core/dialer"
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"github.com/go-gost/core/logger"
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md "github.com/go-gost/core/metadata"
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"github.com/go-gost/x/internal/util/mux"
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ws_util "github.com/go-gost/x/internal/util/ws"
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"github.com/go-gost/x/registry"
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"github.com/gorilla/websocket"
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)
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func init() {
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registry.DialerRegistry().Register("mws", NewDialer)
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registry.DialerRegistry().Register("mwss", NewTLSDialer)
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}
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type mwsDialer struct {
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sessions map[string]*muxSession
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sessionMutex sync.Mutex
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tlsEnabled bool
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md metadata
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options dialer.Options
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}
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func NewDialer(opts ...dialer.Option) dialer.Dialer {
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options := dialer.Options{}
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for _, opt := range opts {
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opt(&options)
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}
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return &mwsDialer{
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sessions: make(map[string]*muxSession),
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options: options,
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}
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}
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func NewTLSDialer(opts ...dialer.Option) dialer.Dialer {
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options := dialer.Options{}
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for _, opt := range opts {
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opt(&options)
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}
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return &mwsDialer{
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tlsEnabled: true,
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sessions: make(map[string]*muxSession),
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options: options,
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}
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}
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func (d *mwsDialer) Init(md md.Metadata) (err error) {
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if err = d.parseMetadata(md); err != nil {
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return
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}
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return nil
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}
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// Multiplex implements dialer.Multiplexer interface.
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func (d *mwsDialer) Multiplex() bool {
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return true
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}
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func (d *mwsDialer) Dial(ctx context.Context, addr string, opts ...dialer.DialOption) (conn net.Conn, err error) {
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d.sessionMutex.Lock()
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defer d.sessionMutex.Unlock()
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session, ok := d.sessions[addr]
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if session != nil && session.IsClosed() {
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delete(d.sessions, addr) // session is dead
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ok = false
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}
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if !ok {
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var options dialer.DialOptions
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for _, opt := range opts {
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opt(&options)
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}
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conn, err = options.Dialer.Dial(ctx, "tcp", addr)
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if err != nil {
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return
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}
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session = &muxSession{conn: conn}
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d.sessions[addr] = session
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}
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return session.conn, err
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}
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// Handshake implements dialer.Handshaker
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func (d *mwsDialer) Handshake(ctx context.Context, conn net.Conn, options ...dialer.HandshakeOption) (net.Conn, error) {
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opts := &dialer.HandshakeOptions{}
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for _, option := range options {
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option(opts)
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}
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log := d.options.Logger.WithFields(map[string]any{
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"local": conn.LocalAddr().String(),
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"remote": conn.RemoteAddr().String(),
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})
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d.sessionMutex.Lock()
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defer d.sessionMutex.Unlock()
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session, ok := d.sessions[opts.Addr]
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if session != nil && session.conn != conn {
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err := errors.New("mws: unrecognized connection")
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log.Error(err)
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conn.Close()
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return nil, err
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}
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if !ok || session.session == nil {
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host := d.md.host
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if host == "" {
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host = opts.Addr
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}
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s, err := d.initSession(ctx, host, conn, log)
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if err != nil {
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log.Error(err)
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conn.Close()
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delete(d.sessions, opts.Addr)
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return nil, err
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}
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session = s
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d.sessions[opts.Addr] = session
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}
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cc, err := session.GetConn()
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if err != nil {
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log.Error(err)
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session.Close()
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delete(d.sessions, opts.Addr)
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return nil, err
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}
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return cc, nil
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}
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func (d *mwsDialer) initSession(ctx context.Context, host string, conn net.Conn, log logger.Logger) (*muxSession, error) {
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dialer := websocket.Dialer{
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HandshakeTimeout: d.md.handshakeTimeout,
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ReadBufferSize: d.md.readBufferSize,
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WriteBufferSize: d.md.writeBufferSize,
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EnableCompression: d.md.enableCompression,
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NetDial: func(net, addr string) (net.Conn, error) {
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return conn, nil
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},
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}
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url := url.URL{Scheme: "ws", Host: host, Path: d.md.path}
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if d.tlsEnabled {
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url.Scheme = "wss"
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dialer.TLSClientConfig = d.options.TLSConfig
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}
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if d.md.handshakeTimeout > 0 {
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conn.SetReadDeadline(time.Now().Add(d.md.handshakeTimeout))
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}
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c, resp, err := dialer.DialContext(ctx, url.String(), d.md.header)
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if err != nil {
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return nil, err
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}
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resp.Body.Close()
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if d.md.handshakeTimeout > 0 {
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conn.SetReadDeadline(time.Time{})
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}
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cc := ws_util.Conn(c)
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if d.md.keepaliveInterval > 0 {
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log.Debugf("keepalive is enabled, ttl: %v", d.md.keepaliveInterval)
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c.SetReadDeadline(time.Now().Add(d.md.keepaliveInterval * 2))
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c.SetPongHandler(func(string) error {
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c.SetReadDeadline(time.Now().Add(d.md.keepaliveInterval * 2))
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return nil
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})
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go d.keepAlive(cc)
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}
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// stream multiplex
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session, err := mux.ClientSession(cc, d.md.muxCfg)
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if err != nil {
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log.Error(err)
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return nil, err
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}
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return &muxSession{conn: cc, session: session}, nil
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}
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func (d *mwsDialer) keepAlive(conn ws_util.WebsocketConn) {
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ticker := time.NewTicker(d.md.keepaliveInterval)
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defer ticker.Stop()
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for range ticker.C {
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d.options.Logger.Debug("send ping")
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conn.SetWriteDeadline(time.Now().Add(10 * time.Second))
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if err := conn.WriteMessage(websocket.PingMessage, nil); err != nil {
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return
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}
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conn.SetWriteDeadline(time.Time{})
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}
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}
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@@ -0,0 +1,71 @@
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package mws
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import (
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"net/http"
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"time"
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mdata "github.com/go-gost/core/metadata"
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mdutil "github.com/go-gost/x/metadata/util"
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"github.com/go-gost/x/internal/util/mux"
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)
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const (
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defaultPath = "/ws"
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defaultKeepalivePeriod = 15 * time.Second
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)
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type metadata struct {
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host string
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path string
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handshakeTimeout time.Duration
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readHeaderTimeout time.Duration
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readBufferSize int
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writeBufferSize int
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enableCompression bool
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header http.Header
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keepaliveInterval time.Duration
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muxCfg *mux.Config
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}
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func (d *mwsDialer) parseMetadata(md mdata.Metadata) (err error) {
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d.md.host = mdutil.GetString(md, "ws.host", "host")
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d.md.path = mdutil.GetString(md, "ws.path", "path")
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if d.md.path == "" {
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d.md.path = defaultPath
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}
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d.md.muxCfg = &mux.Config{
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Version: mdutil.GetInt(md, "mux.version"),
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KeepAliveInterval: mdutil.GetDuration(md, "mux.keepaliveInterval"),
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KeepAliveDisabled: mdutil.GetBool(md, "mux.keepaliveDisabled"),
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KeepAliveTimeout: mdutil.GetDuration(md, "mux.keepaliveTimeout"),
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MaxFrameSize: mdutil.GetInt(md, "mux.maxFrameSize"),
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MaxReceiveBuffer: mdutil.GetInt(md, "mux.maxReceiveBuffer"),
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MaxStreamBuffer: mdutil.GetInt(md, "mux.maxStreamBuffer"),
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}
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d.md.handshakeTimeout = mdutil.GetDuration(md, "ws.handshakeTimeout", "handshakeTimeout")
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d.md.readHeaderTimeout = mdutil.GetDuration(md, "ws.readHeaderTimeout", "readHeaderTimeout")
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d.md.readBufferSize = mdutil.GetInt(md, "ws.readBufferSize", "readBufferSize")
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d.md.writeBufferSize = mdutil.GetInt(md, "ws.writeBufferSize", "writeBufferSize")
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d.md.enableCompression = mdutil.GetBool(md, "ws.enableCompression", "enableCompression")
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if m := mdutil.GetStringMapString(md, "ws.header", "header"); len(m) > 0 {
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h := http.Header{}
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for k, v := range m {
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h.Add(k, v)
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}
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d.md.header = h
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}
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if mdutil.GetBool(md, "ws.keepalive", "keepalive") {
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d.md.keepaliveInterval = mdutil.GetDuration(md, "ttl", "keepalive.interval")
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if d.md.keepaliveInterval <= 0 {
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d.md.keepaliveInterval = defaultKeepalivePeriod
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}
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}
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return
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}
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