mirror of
https://github.com/v2fly/v2ray-core.git
synced 2024-06-29 02:35:23 +00:00
91 lines
2.4 KiB
Go
91 lines
2.4 KiB
Go
package websocket
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import (
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"context"
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"net"
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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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globalCache = internal.NewConnectionPool()
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)
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func Dial(ctx context.Context, dest v2net.Destination) (internet.Connection, error) {
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log.Info("WebSocket|Dialer: Creating connection to ", dest)
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src := internet.DialerSourceFromContext(ctx)
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wsSettings := internet.TransportSettingsFromContext(ctx).(*Config)
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id := internal.NewConnectionID(src, dest)
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var conn net.Conn
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if dest.Network == v2net.Network_TCP && wsSettings.IsConnectionReuse() {
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conn = globalCache.Get(id)
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}
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if conn == nil {
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var err error
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conn, err = dialWebsocket(ctx, dest)
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if err != nil {
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return nil, errors.New("dial failed").Path("WebSocket", "Dialer")
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}
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}
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return internal.NewConnection(id, conn, globalCache, internal.ReuseConnection(wsSettings.IsConnectionReuse())), nil
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}
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func init() {
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common.Must(internet.RegisterTransportDialer(internet.TransportProtocol_WebSocket, Dial))
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}
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func dialWebsocket(ctx context.Context, dest v2net.Destination) (net.Conn, error) {
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src := internet.DialerSourceFromContext(ctx)
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wsSettings := internet.TransportSettingsFromContext(ctx).(*Config)
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commonDial := func(network, addr string) (net.Conn, error) {
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return internet.DialSystem(ctx, src, dest)
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}
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dialer := websocket.Dialer{
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NetDial: commonDial,
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ReadBufferSize: 32 * 1024,
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WriteBufferSize: 32 * 1024,
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}
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protocol := "ws"
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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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protocol = "wss"
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dialer.TLSClientConfig = tlsConfig.GetTLSConfig()
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if dest.Address.Family().IsDomain() {
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dialer.TLSClientConfig.ServerName = dest.Address.Domain()
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}
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}
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}
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host := dest.NetAddr()
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if (protocol == "ws" && dest.Port == 80) || (protocol == "wss" && dest.Port == 443) {
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host = dest.Address.String()
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}
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uri := protocol + "://" + host + wsSettings.GetNormailzedPath()
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conn, resp, err := dialer.Dial(uri, nil)
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if err != nil {
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var reason string
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if resp != nil {
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reason = resp.Status
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}
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return nil, errors.New("failed to dial to (", uri, "): ", reason).Base(err).Path("WebSocket", "Dialer")
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}
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return &connection{
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wsc: conn,
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}, nil
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}
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