mirror of
https://github.com/v2fly/v2ray-core.git
synced 2024-06-03 06:30:42 +00:00
144 lines
3.3 KiB
Go
144 lines
3.3 KiB
Go
package websocket
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import (
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"context"
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"crypto/tls"
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"net"
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"net/http"
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"strconv"
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"sync"
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"time"
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"github.com/gorilla/websocket"
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"v2ray.com/core/app/log"
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"v2ray.com/core/common"
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"v2ray.com/core/common/errors"
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v2net "v2ray.com/core/common/net"
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"v2ray.com/core/transport/internet"
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"v2ray.com/core/transport/internet/internal"
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v2tls "v2ray.com/core/transport/internet/tls"
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)
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var (
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ErrClosedListener = errors.New("Listener is closed.")
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)
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type requestHandler struct {
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path string
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ln *Listener
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}
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func (h *requestHandler) ServeHTTP(writer http.ResponseWriter, request *http.Request) {
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if request.URL.Path != h.path {
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writer.WriteHeader(http.StatusNotFound)
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return
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}
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conn, err := converttovws(writer, request)
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if err != nil {
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log.Info("WebSocket|Listener: Failed to convert to WebSocket connection: ", err)
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return
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}
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select {
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case <-h.ln.ctx.Done():
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conn.Close()
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case h.ln.conns <- internal.NewConnection(internal.ConnectionID{}, conn, h.ln, internal.ReuseConnection(h.ln.config.IsConnectionReuse())):
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case <-time.After(time.Second * 5):
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conn.Close()
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}
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}
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type Listener struct {
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sync.Mutex
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ctx context.Context
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listener net.Listener
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tlsConfig *tls.Config
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config *Config
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conns chan<- internet.Connection
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}
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func ListenWS(ctx context.Context, address v2net.Address, port v2net.Port, conns chan<- internet.Connection) (internet.Listener, error) {
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networkSettings := internet.TransportSettingsFromContext(ctx)
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wsSettings := networkSettings.(*Config)
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l := &Listener{
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ctx: ctx,
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config: wsSettings,
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conns: conns,
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}
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if securitySettings := internet.SecuritySettingsFromContext(ctx); securitySettings != nil {
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tlsConfig, ok := securitySettings.(*v2tls.Config)
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if ok {
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l.tlsConfig = tlsConfig.GetTLSConfig()
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}
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}
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err := l.listenws(address, port)
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return l, err
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}
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func (ln *Listener) listenws(address v2net.Address, port v2net.Port) error {
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netAddr := address.String() + ":" + strconv.Itoa(int(port.Value()))
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var listener net.Listener
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if ln.tlsConfig == nil {
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l, err := net.Listen("tcp", netAddr)
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if err != nil {
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return errors.New("failed to listen TCP ", netAddr).Base(err).Path("WebSocket", "Listener")
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}
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listener = l
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} else {
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l, err := tls.Listen("tcp", netAddr, ln.tlsConfig)
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if err != nil {
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return errors.New("failed to listen TLS ", netAddr).Base(err).Path("WebSocket", "Listener")
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}
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listener = l
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}
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ln.listener = listener
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go func() {
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http.Serve(listener, &requestHandler{
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path: ln.config.GetNormailzedPath(),
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ln: ln,
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})
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}()
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return nil
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}
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func converttovws(w http.ResponseWriter, r *http.Request) (*connection, error) {
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var upgrader = websocket.Upgrader{
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ReadBufferSize: 32 * 1024,
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WriteBufferSize: 32 * 1024,
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}
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conn, err := upgrader.Upgrade(w, r, nil)
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if err != nil {
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return nil, err
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}
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return &connection{wsc: conn}, nil
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}
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func (ln *Listener) Put(id internal.ConnectionID, conn net.Conn) {
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select {
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case <-ln.ctx.Done():
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conn.Close()
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case ln.conns <- internal.NewConnection(internal.ConnectionID{}, conn, ln, internal.ReuseConnection(ln.config.IsConnectionReuse())):
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case <-time.After(time.Second * 5):
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conn.Close()
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}
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}
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func (ln *Listener) Addr() net.Addr {
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return ln.listener.Addr()
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}
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func (ln *Listener) Close() error {
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return ln.listener.Close()
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}
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func init() {
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common.Must(internet.RegisterTransportListener(internet.TransportProtocol_WebSocket, ListenWS))
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}
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