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v2fly/functions.go
Jebbs 2523d77919
improve commands
(rebased from ebbf31f07e)
2021-09-04 11:11:45 +01:00

83 lines
2.7 KiB
Go

package core
import (
"bytes"
"context"
"github.com/v2fly/v2ray-core/v4/common"
"github.com/v2fly/v2ray-core/v4/common/net"
"github.com/v2fly/v2ray-core/v4/features/routing"
"github.com/v2fly/v2ray-core/v4/transport/internet/udp"
)
// CreateObject creates a new object based on the given V2Ray instance and config. The V2Ray instance may be nil.
func CreateObject(v *Instance, config interface{}) (interface{}, error) {
var ctx context.Context
if v != nil {
ctx = toContext(v.ctx, v)
}
return common.CreateObject(ctx, config)
}
// StartInstance starts a new V2Ray instance with given serialized config.
// By default V2Ray only support config in protobuf format, i.e., configFormat = "protobuf". Caller need to load other packages to add JSON support.
//
// v2ray:api:stable
func StartInstance(configFormat string, configBytes []byte) (*Instance, error) {
config, err := LoadConfig(configFormat, bytes.NewReader(configBytes))
if err != nil {
return nil, err
}
instance, err := New(config)
if err != nil {
return nil, err
}
if err := instance.Start(); err != nil {
return nil, err
}
return instance, nil
}
// Dial provides an easy way for upstream caller to create net.Conn through V2Ray.
// It dispatches the request to the given destination by the given V2Ray instance.
// Since it is under a proxy context, the LocalAddr() and RemoteAddr() in returned net.Conn
// will not show real addresses being used for communication.
//
// v2ray:api:stable
func Dial(ctx context.Context, v *Instance, dest net.Destination) (net.Conn, error) {
ctx = toContext(ctx, v)
dispatcher := v.GetFeature(routing.DispatcherType())
if dispatcher == nil {
return nil, newError("routing.Dispatcher is not registered in V2Ray core")
}
r, err := dispatcher.(routing.Dispatcher).Dispatch(ctx, dest)
if err != nil {
return nil, err
}
var readerOpt net.ConnectionOption
if dest.Network == net.Network_TCP {
readerOpt = net.ConnectionOutputMulti(r.Reader)
} else {
readerOpt = net.ConnectionOutputMultiUDP(r.Reader)
}
return net.NewConnection(net.ConnectionInputMulti(r.Writer), readerOpt), nil
}
// DialUDP provides a way to exchange UDP packets through V2Ray instance to remote servers.
// Since it is under a proxy context, the LocalAddr() in returned PacketConn will not show the real address.
//
// TODO: SetDeadline() / SetReadDeadline() / SetWriteDeadline() are not implemented.
//
// v2ray:api:beta
func DialUDP(ctx context.Context, v *Instance) (net.PacketConn, error) {
ctx = toContext(ctx, v)
dispatcher := v.GetFeature(routing.DispatcherType())
if dispatcher == nil {
return nil, newError("routing.Dispatcher is not registered in V2Ray core")
}
return udp.DialDispatcher(ctx, dispatcher.(routing.Dispatcher))
}