mirror of https://github.com/v2fly/v2ray-core.git
111 lines
2.8 KiB
Go
111 lines
2.8 KiB
Go
package dokodemo
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//go:generate go run $GOPATH/src/v2ray.com/core/tools/generrorgen/main.go -pkg dokodemo -path Proxy,Dokodemo
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import (
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"context"
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"runtime"
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"time"
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"v2ray.com/core/app"
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"v2ray.com/core/app/dispatcher"
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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/buf"
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"v2ray.com/core/common/net"
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"v2ray.com/core/common/signal"
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"v2ray.com/core/proxy"
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"v2ray.com/core/transport/internet"
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)
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type DokodemoDoor struct {
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config *Config
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address net.Address
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port net.Port
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}
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func New(ctx context.Context, config *Config) (*DokodemoDoor, error) {
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space := app.SpaceFromContext(ctx)
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if space == nil {
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return nil, newError("Dokodemo: No space in context.")
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}
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if config.NetworkList == nil || config.NetworkList.Size() == 0 {
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return nil, newError("DokodemoDoor: No network specified.")
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}
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d := &DokodemoDoor{
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config: config,
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address: config.GetPredefinedAddress(),
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port: net.Port(config.Port),
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}
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return d, nil
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}
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func (d *DokodemoDoor) Network() net.NetworkList {
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return *(d.config.NetworkList)
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}
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func (d *DokodemoDoor) Process(ctx context.Context, network net.Network, conn internet.Connection, dispatcher dispatcher.Interface) error {
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log.Trace(newError("Dokodemo: processing connection from: ", conn.RemoteAddr()).AtDebug())
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dest := net.Destination{
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Network: network,
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Address: d.address,
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Port: d.port,
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}
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if d.config.FollowRedirect {
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if origDest, ok := proxy.OriginalTargetFromContext(ctx); ok {
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dest = origDest
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}
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}
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if !dest.IsValid() || dest.Address == nil {
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return newError("unable to get destination")
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}
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timeout := time.Second * time.Duration(d.config.Timeout)
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if timeout == 0 {
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timeout = time.Minute * 2
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}
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ctx, timer := signal.CancelAfterInactivity(ctx, timeout)
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inboundRay, err := dispatcher.Dispatch(ctx, dest)
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if err != nil {
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return err
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}
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requestDone := signal.ExecuteAsync(func() error {
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defer inboundRay.InboundInput().Close()
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chunkReader := buf.NewReader(conn)
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if err := buf.PipeUntilEOF(timer, chunkReader, inboundRay.InboundInput()); err != nil {
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return newError("failed to transport request").Base(err)
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}
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return nil
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})
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responseDone := signal.ExecuteAsync(func() error {
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v2writer := buf.NewWriter(conn)
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if err := buf.PipeUntilEOF(timer, inboundRay.InboundOutput(), v2writer); err != nil {
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return newError("failed to transport response").Base(err)
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}
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return nil
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})
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if err := signal.ErrorOrFinish2(ctx, requestDone, responseDone); err != nil {
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inboundRay.InboundInput().CloseError()
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inboundRay.InboundOutput().CloseError()
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return newError("connection ends").Base(err)
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}
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runtime.KeepAlive(timer)
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return nil
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}
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func init() {
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common.Must(common.RegisterConfig((*Config)(nil), func(ctx context.Context, config interface{}) (interface{}, error) {
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return New(ctx, config.(*Config))
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}))
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}
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