mirror of https://github.com/v2ray/v2ray-core
115 lines
2.9 KiB
Go
115 lines
2.9 KiB
Go
package dokodemo
|
|
|
|
import (
|
|
"context"
|
|
"runtime"
|
|
"time"
|
|
|
|
"v2ray.com/core/app"
|
|
"v2ray.com/core/app/dispatcher"
|
|
"v2ray.com/core/app/log"
|
|
"v2ray.com/core/common"
|
|
"v2ray.com/core/common/buf"
|
|
"v2ray.com/core/common/errors"
|
|
"v2ray.com/core/common/net"
|
|
"v2ray.com/core/common/signal"
|
|
"v2ray.com/core/proxy"
|
|
"v2ray.com/core/transport/internet"
|
|
)
|
|
|
|
type DokodemoDoor struct {
|
|
config *Config
|
|
address net.Address
|
|
port net.Port
|
|
}
|
|
|
|
func New(ctx context.Context, config *Config) (*DokodemoDoor, error) {
|
|
space := app.SpaceFromContext(ctx)
|
|
if space == nil {
|
|
return nil, errors.New("Dokodemo: No space in context.")
|
|
}
|
|
if config.NetworkList == nil || config.NetworkList.Size() == 0 {
|
|
return nil, errors.New("DokodemoDoor: No network specified.")
|
|
}
|
|
d := &DokodemoDoor{
|
|
config: config,
|
|
address: config.GetPredefinedAddress(),
|
|
port: net.Port(config.Port),
|
|
}
|
|
return d, nil
|
|
}
|
|
|
|
func (d *DokodemoDoor) Network() net.NetworkList {
|
|
return *(d.config.NetworkList)
|
|
}
|
|
|
|
func (d *DokodemoDoor) Process(ctx context.Context, network net.Network, conn internet.Connection, dispatcher dispatcher.Interface) error {
|
|
log.Debug("Dokodemo: processing connection from: ", conn.RemoteAddr())
|
|
conn.SetReusable(false)
|
|
dest := net.Destination{
|
|
Network: network,
|
|
Address: d.address,
|
|
Port: d.port,
|
|
}
|
|
if d.config.FollowRedirect {
|
|
if origDest, ok := proxy.OriginalTargetFromContext(ctx); ok {
|
|
dest = origDest
|
|
}
|
|
}
|
|
if !dest.IsValid() || dest.Address == nil {
|
|
log.Info("Dokodemo: Invalid destination. Discarding...")
|
|
return errors.New("Dokodemo: Unable to get destination.")
|
|
}
|
|
ctx, cancel := context.WithCancel(ctx)
|
|
timeout := time.Second * time.Duration(d.config.Timeout)
|
|
if timeout == 0 {
|
|
timeout = time.Minute * 2
|
|
}
|
|
timer := signal.CancelAfterInactivity(ctx, cancel, timeout)
|
|
|
|
inboundRay, err := dispatcher.Dispatch(ctx, dest)
|
|
if err != nil {
|
|
return err
|
|
}
|
|
|
|
requestDone := signal.ExecuteAsync(func() error {
|
|
defer inboundRay.InboundInput().Close()
|
|
|
|
chunkReader := buf.NewReader(conn)
|
|
|
|
if err := buf.PipeUntilEOF(timer, chunkReader, inboundRay.InboundInput()); err != nil {
|
|
log.Info("Dokodemo: Failed to transport request: ", err)
|
|
return err
|
|
}
|
|
|
|
return nil
|
|
})
|
|
|
|
responseDone := signal.ExecuteAsync(func() error {
|
|
v2writer := buf.NewWriter(conn)
|
|
|
|
if err := buf.PipeUntilEOF(timer, inboundRay.InboundOutput(), v2writer); err != nil {
|
|
log.Info("Dokodemo: Failed to transport response: ", err)
|
|
return err
|
|
}
|
|
return nil
|
|
})
|
|
|
|
if err := signal.ErrorOrFinish2(ctx, requestDone, responseDone); err != nil {
|
|
inboundRay.InboundInput().CloseError()
|
|
inboundRay.InboundOutput().CloseError()
|
|
log.Info("Dokodemo: Connection ends with ", err)
|
|
return err
|
|
}
|
|
|
|
runtime.KeepAlive(timer)
|
|
|
|
return nil
|
|
}
|
|
|
|
func init() {
|
|
common.Must(common.RegisterConfig((*Config)(nil), func(ctx context.Context, config interface{}) (interface{}, error) {
|
|
return New(ctx, config.(*Config))
|
|
}))
|
|
}
|