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mirror of https://github.com/v2fly/v2ray-core.git synced 2024-11-10 14:26:26 -05:00
v2fly/proxy/vless/outbound/outbound.go
yuhan6665 7bcb3c901b
Fix client dialer log (#1568)
* Fix client dialer log

Log such as:
tunneling request to tcp:www.google.com:80 via tcp:x.x.x.x:443
the second "tcp" is misleading when using mKcp or quic transport

Remove the second "tcp" and add the correct logging for transport dialer:
- transport/internet/tcp: dialing TCP to tcp:x.x.x.x:443
- transport/internet/quic: dialing quic to udp:x.x.x.x:443

* Update transport/internet/quic/dialer.go

Co-authored-by: 秋のかえで <autmaple@protonmail.com>

Co-authored-by: 秋のかえで <autmaple@protonmail.com>
Co-authored-by: Kslr <kslrwang@gmail.com>
2022-04-06 13:24:43 +08:00

184 lines
5.8 KiB
Go

package outbound
//go:generate go run github.com/v2fly/v2ray-core/v5/common/errors/errorgen
import (
"context"
"time"
core "github.com/v2fly/v2ray-core/v5"
"github.com/v2fly/v2ray-core/v5/common"
"github.com/v2fly/v2ray-core/v5/common/buf"
"github.com/v2fly/v2ray-core/v5/common/net"
"github.com/v2fly/v2ray-core/v5/common/protocol"
"github.com/v2fly/v2ray-core/v5/common/retry"
"github.com/v2fly/v2ray-core/v5/common/serial"
"github.com/v2fly/v2ray-core/v5/common/session"
"github.com/v2fly/v2ray-core/v5/common/signal"
"github.com/v2fly/v2ray-core/v5/common/task"
"github.com/v2fly/v2ray-core/v5/features/policy"
"github.com/v2fly/v2ray-core/v5/proxy/vless"
"github.com/v2fly/v2ray-core/v5/proxy/vless/encoding"
"github.com/v2fly/v2ray-core/v5/transport"
"github.com/v2fly/v2ray-core/v5/transport/internet"
)
func init() {
common.Must(common.RegisterConfig((*Config)(nil), func(ctx context.Context, config interface{}) (interface{}, error) {
return New(ctx, config.(*Config))
}))
common.Must(common.RegisterConfig((*SimplifiedConfig)(nil), func(ctx context.Context, config interface{}) (interface{}, error) {
simplifiedClient := config.(*SimplifiedConfig)
fullClient := &Config{Vnext: []*protocol.ServerEndpoint{
{
Address: simplifiedClient.Address,
Port: simplifiedClient.Port,
User: []*protocol.User{
{
Account: serial.ToTypedMessage(&vless.Account{Id: simplifiedClient.Uuid, Encryption: "none"}),
},
},
},
}}
return common.CreateObject(ctx, fullClient)
}))
}
// Handler is an outbound connection handler for VLess protocol.
type Handler struct {
serverList *protocol.ServerList
serverPicker protocol.ServerPicker
policyManager policy.Manager
}
// New creates a new VLess outbound handler.
func New(ctx context.Context, config *Config) (*Handler, error) {
serverList := protocol.NewServerList()
for _, rec := range config.Vnext {
s, err := protocol.NewServerSpecFromPB(rec)
if err != nil {
return nil, newError("failed to parse server spec").Base(err).AtError()
}
serverList.AddServer(s)
}
v := core.MustFromContext(ctx)
handler := &Handler{
serverList: serverList,
serverPicker: protocol.NewRoundRobinServerPicker(serverList),
policyManager: v.GetFeature(policy.ManagerType()).(policy.Manager),
}
return handler, nil
}
// Process implements proxy.Outbound.Process().
func (h *Handler) Process(ctx context.Context, link *transport.Link, dialer internet.Dialer) error {
var rec *protocol.ServerSpec
var conn internet.Connection
if err := retry.ExponentialBackoff(5, 200).On(func() error {
rec = h.serverPicker.PickServer()
var err error
conn, err = dialer.Dial(ctx, rec.Destination())
if err != nil {
return err
}
return nil
}); err != nil {
return newError("failed to find an available destination").Base(err).AtWarning()
}
defer conn.Close()
outbound := session.OutboundFromContext(ctx)
if outbound == nil || !outbound.Target.IsValid() {
return newError("target not specified").AtError()
}
target := outbound.Target
newError("tunneling request to ", target, " via ", rec.Destination().NetAddr()).AtInfo().WriteToLog(session.ExportIDToError(ctx))
command := protocol.RequestCommandTCP
if target.Network == net.Network_UDP {
command = protocol.RequestCommandUDP
}
if target.Address.Family().IsDomain() && target.Address.Domain() == "v1.mux.cool" {
command = protocol.RequestCommandMux
}
request := &protocol.RequestHeader{
Version: encoding.Version,
User: rec.PickUser(),
Command: command,
Address: target.Address,
Port: target.Port,
}
account := request.User.Account.(*vless.MemoryAccount)
requestAddons := &encoding.Addons{
Flow: account.Flow,
}
sessionPolicy := h.policyManager.ForLevel(request.User.Level)
ctx, cancel := context.WithCancel(ctx)
timer := signal.CancelAfterInactivity(ctx, cancel, sessionPolicy.Timeouts.ConnectionIdle)
clientReader := link.Reader // .(*pipe.Reader)
clientWriter := link.Writer // .(*pipe.Writer)
postRequest := func() error {
defer timer.SetTimeout(sessionPolicy.Timeouts.DownlinkOnly)
bufferWriter := buf.NewBufferedWriter(buf.NewWriter(conn))
if err := encoding.EncodeRequestHeader(bufferWriter, request, requestAddons); err != nil {
return newError("failed to encode request header").Base(err).AtWarning()
}
// default: serverWriter := bufferWriter
serverWriter := encoding.EncodeBodyAddons(bufferWriter, request, requestAddons)
if err := buf.CopyOnceTimeout(clientReader, serverWriter, time.Millisecond*100); err != nil && err != buf.ErrNotTimeoutReader && err != buf.ErrReadTimeout {
return err // ...
}
// Flush; bufferWriter.WriteMultiBuffer now is bufferWriter.writer.WriteMultiBuffer
if err := bufferWriter.SetBuffered(false); err != nil {
return newError("failed to write A request payload").Base(err).AtWarning()
}
// from clientReader.ReadMultiBuffer to serverWriter.WriteMultiBuffer
if err := buf.Copy(clientReader, serverWriter, buf.UpdateActivity(timer)); err != nil {
return newError("failed to transfer request payload").Base(err).AtInfo()
}
return nil
}
getResponse := func() error {
defer timer.SetTimeout(sessionPolicy.Timeouts.UplinkOnly)
responseAddons, err := encoding.DecodeResponseHeader(conn, request)
if err != nil {
return newError("failed to decode response header").Base(err).AtInfo()
}
// default: serverReader := buf.NewReader(conn)
serverReader := encoding.DecodeBodyAddons(conn, request, responseAddons)
// from serverReader.ReadMultiBuffer to clientWriter.WriteMultiBuffer
if err := buf.Copy(serverReader, clientWriter, buf.UpdateActivity(timer)); err != nil {
return newError("failed to transfer response payload").Base(err).AtInfo()
}
return nil
}
if err := task.Run(ctx, postRequest, task.OnSuccess(getResponse, task.Close(clientWriter))); err != nil {
return newError("connection ends").Base(err).AtInfo()
}
return nil
}