57 changed files with 625 additions and 1451 deletions
--- a/.github/workflows/buildx.yml
+++ b/.github/workflows/buildx.yml
@ -1,72 +0,0 @@
-# ref: https://docs.docker.com/ci-cd/github-actions/
-# https://blog.oddbit.com/post/2020-09-25-building-multi-architecture-im/
-
-name: docker
-
-on: 
-  push:
-    branches:
-    - master
-    tags:
-    - 'v*'
-
-jobs:
-  build:
-    runs-on: ubuntu-latest
-    steps:
-    - name: Prepare
-      id: prepare
-      run: |
-        DOCKER_IMAGE=${{ secrets.DOCKER_IMAGE }}
-        VERSION=latest
-
-        # If this is git tag, use the tag name as a docker tag
-        if [[ $GITHUB_REF == refs/tags/* ]]; then
-          VERSION=${GITHUB_REF#refs/tags/v}
-        fi
-        TAGS="${DOCKER_IMAGE}:${VERSION}"
-
-        # If the VERSION looks like a version number, assume that
-        # this is the most recent version of the image and also
-        # tag it 'latest'.
-        if [[ $VERSION =~ ^[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}$ ]]; then
-          MAJOR_VERSION=`echo $VERSION | awk '{split($0,a,"."); print a[1]}'`
-          MINOR_VERSION=`echo $VERSION | awk '{split($0,a,"."); print a[2]}'`
-          TAGS="$TAGS,${DOCKER_IMAGE}:${MAJOR_VERSION},${DOCKER_IMAGE}:${MAJOR_VERSION}.${MINOR_VERSION},${DOCKER_IMAGE}:latest"
-        fi
-
-        # Set output parameters.
-        echo "tags=${TAGS}" >> $GITHUB_OUTPUT
-        echo "docker_image=${DOCKER_IMAGE}" >> $GITHUB_OUTPUT
-        echo "docker_platforms=linux/386,linux/amd64,linux/arm/v6,linux/arm/v7,linux/arm64/v8,linux/s390x,linux/riscv64" >> $GITHUB_OUTPUT
-
-    - name: Set up QEMU
-      uses: docker/setup-qemu-action@v3
-
-    - name: Set up Docker Buildx
-      id: buildx
-      uses: docker/setup-buildx-action@v3
-
-    - name: Environment
-      run: |
-        echo home=$HOME
-        echo git_ref=$GITHUB_REF
-        echo git_sha=$GITHUB_SHA
-        echo image=${{ steps.prepare.outputs.docker_image }}
-        echo tags=${{ steps.prepare.outputs.tags }}
-        echo platforms=${{ steps.prepare.outputs.docker_platforms }}
-        echo avail_platforms=${{ steps.buildx.outputs.platforms }}
-
-    - name: Login to DockerHub
-      if: github.event_name != 'pull_request'
-      uses: docker/login-action@v3
-      with:
-        username: ${{ secrets.DOCKER_USERNAME }}
-        password: ${{ secrets.DOCKER_PASSWORD }}
-
-    - name: Buildx and push
-      uses: docker/build-push-action@v6
-      with:
-        platforms: ${{ steps.prepare.outputs.docker_platforms }}
-        push: true
-        tags: ${{ steps.prepare.outputs.tags }}
--- a/.github/workflows/release.yml
+++ b/.github/workflows/release.yml
@ -1,38 +0,0 @@
-name: goreleaser
-
-on:
-  push:
-    # run only against tags
-    tags:
-      - 'v*'
-
-permissions:
-  contents: write
-  # packages: write
-  # issues: write
-
-jobs:
-  goreleaser:
-    runs-on: ubuntu-latest
-    steps:
-      - uses: actions/checkout@v3
-        with:
-          fetch-depth: 0
-      - run: git fetch --force --tags
-      - uses: actions/setup-go@v3
-        with:
-          go-version: '1.22'
-          cache: true
-      # More assembly might be required: Docker logins, GPG, etc. It all depends
-      # on your needs.
-      - uses: goreleaser/goreleaser-action@v4
-        with:
-          # either 'goreleaser' (default) or 'goreleaser-pro':
-          distribution: goreleaser
-          version: latest
-          args: release --clean
-        env:
-          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
-          # Your GoReleaser Pro key, if you are using the 'goreleaser-pro'
-          # distribution:
-          # GORELEASER_KEY: ${{ secrets.GORELEASER_KEY }}
--- a/.gitignore
+++ b/.gitignore
@ -9,7 +9,6 @@ _test
 release
 debian
 bin
-dist/

 # Architecture specific extensions/prefixes
 *.[568vq]
@ -31,5 +30,5 @@ _testmain.go

 *.bak

-.vscode/
 cmd/gost/gost
+snap
--- a/.goreleaser.yaml
+++ b/.goreleaser.yaml
@ -1,58 +0,0 @@
-# This is an example .goreleaser.yml file with some sensible defaults.
-# Make sure to check the documentation at https://goreleaser.com
-before:
-  hooks:
-    # You may remove this if you don't use go modules.
-    - go mod tidy
-    # you may remove this if you don't need go generate
-    # - go generate ./...
-builds:
-  - env:
-      - CGO_ENABLED=0
-    main: ./cmd/gost
-    targets:
-      - darwin_amd64
-      - darwin_arm64
-      - linux_386
-      - linux_amd64
-      - linux_amd64_v3
-      - linux_arm_5
-      - linux_arm_6
-      - linux_arm_7
-      - linux_arm64
-      - linux_mips_softfloat
-      - linux_mips_hardfloat
-      - linux_mipsle_softfloat
-      - linux_mipsle_hardfloat
-      - linux_mips64
-      - linux_mips64le
-      - linux_s390x
-      - linux_riscv64
-      - freebsd_386
-      - freebsd_amd64
-      - windows_386
-      - windows_amd64
-      - windows_amd64_v3
-      - windows_arm64
-
-archives:
-  - format: tar.gz
-    # use zip for windows archives
-    format_overrides:
-    - goos: windows
-      format: zip
-checksum:
-  name_template: 'checksums.txt'
-snapshot:
-  name_template: "{{ incpatch .Version }}-next"
-changelog:
-  sort: asc
-  filters:
-    exclude:
-      - '^docs:'
-      - '^test:'
-
-# The lines beneath this are called `modelines`. See `:help modeline`
-# Feel free to remove those if you don't want/use them.
-# yaml-language-server: $schema=https://goreleaser.com/static/schema.json
-# vim: set ts=2 sw=2 tw=0 fo=cnqoj
--- a/31
+++ b/31
@ -1,32 +1,19 @@
-FROM --platform=$BUILDPLATFORM tonistiigi/xx:1.5.0 AS xx
+FROM golang:1-alpine as builder

-FROM --platform=$BUILDPLATFORM golang:1.23-alpine3.20 AS builder
+RUN apk add --no-cache musl-dev git gcc

-COPY --from=xx / /
+ADD . /src

-ARG TARGETPLATFORM
+WORKDIR /src

-RUN xx-info env
+ENV GO111MODULE=on

-ENV CGO_ENABLED=0
+RUN cd cmd/gost && go build

-ENV XX_VERIFY_STATIC=1
-
-WORKDIR /app
-
-COPY . .
-
-RUN cd cmd/gost && \
-    xx-go build && \
-    xx-verify gost
-
-FROM alpine:3.20
-
-# add iptables for tun/tap
-RUN apk add --no-cache iptables
+FROM alpine:latest

 WORKDIR /bin/

-COPY --from=builder /app/cmd/gost/gost .
+COPY --from=builder /src/cmd/gost/gost .

-ENTRYPOINT ["/bin/gost"]
+ENTRYPOINT ["/bin/gost"]
--- a/20
+++ b/20
@ -2,11 +2,10 @@ NAME=gost
 BINDIR=bin
 VERSION=$(shell cat gost.go | grep 'Version =' | sed 's/.*\"\(.*\)\".*/\1/g')
 GOBUILD=CGO_ENABLED=0 go build --ldflags="-s -w" -v -x -a
-GOFILES=cmd/gost/*.go
+GOFILES=cmd/gost/*

 PLATFORM_LIST = \
 	darwin-amd64 \
-	darwin-arm64 \
 	linux-386 \
 	linux-amd64 \
 	linux-armv5 \
@ -19,24 +18,18 @@ PLATFORM_LIST = \
 	linux-mipsle-hardfloat \
 	linux-mips64 \
 	linux-mips64le \
-	linux-s390x \
-	linux-riscv64 \
 	freebsd-386 \
 	freebsd-amd64

 WINDOWS_ARCH_LIST = \
 	windows-386 \
-	windows-amd64 \
-	windows-arm64
+	windows-amd64

 all: linux-amd64 darwin-amd64 windows-amd64 # Most used

 darwin-amd64:
 	GOARCH=amd64 GOOS=darwin $(GOBUILD) -o $(BINDIR)/$(NAME)-$@ $(GOFILES)

-darwin-arm64:
-	GOARCH=arm64 GOOS=darwin $(GOBUILD) -o $(BINDIR)/$(NAME)-$@ $(GOFILES)
-
 linux-386:
 	GOARCH=386 GOOS=linux $(GOBUILD) -o $(BINDIR)/$(NAME)-$@ $(GOFILES)

@ -73,12 +66,6 @@ linux-mips64:
 linux-mips64le:
 	GOARCH=mips64le GOOS=linux $(GOBUILD) -o $(BINDIR)/$(NAME)-$@ $(GOFILES)

-linux-s390x:
-	GOARCH=s390x GOOS=linux $(GOBUILD) -o $(BINDIR)/$(NAME)-$@ $(GOFILES)
-
-linux-riscv64:
-	GOARCH=riscv64 GOOS=linux $(GOBUILD) -o $(BINDIR)/$(NAME)-$@ $(GOFILES)
-
 freebsd-386:
 	GOARCH=386 GOOS=freebsd $(GOBUILD) -o $(BINDIR)/$(NAME)-$@ $(GOFILES)

@ -91,9 +78,6 @@ windows-386:
 windows-amd64:
 	GOARCH=amd64 GOOS=windows $(GOBUILD) -o $(BINDIR)/$(NAME)-$@.exe $(GOFILES)

-windows-arm64:
-	GOARCH=arm64 GOOS=windows $(GOBUILD) -o $(BINDIR)/$(NAME)-$@.exe $(GOFILES)
-
 gz_releases=$(addsuffix .gz, $(PLATFORM_LIST))
 zip_releases=$(addsuffix .zip, $(WINDOWS_ARCH_LIST))

--- a/README.md
+++ b/README.md
@ -1,40 +1,39 @@
-GO Simple Tunnel
+gost - GO Simple Tunnel
 ======

 ### GO语言实现的安全隧道

 [![GoDoc](https://godoc.org/github.com/ginuerzh/gost?status.svg)](https://godoc.org/github.com/ginuerzh/gost)
+[![Build Status](https://travis-ci.org/ginuerzh/gost.svg?branch=master)](https://travis-ci.org/ginuerzh/gost)
 [![Go Report Card](https://goreportcard.com/badge/github.com/ginuerzh/gost)](https://goreportcard.com/report/github.com/ginuerzh/gost)
 [![codecov](https://codecov.io/gh/ginuerzh/gost/branch/master/graphs/badge.svg)](https://codecov.io/gh/ginuerzh/gost/branch/master)
 [![GitHub release](https://img.shields.io/github/release/ginuerzh/gost.svg)](https://github.com/ginuerzh/gost/releases/latest)
-[![Docker](https://img.shields.io/docker/pulls/ginuerzh/gost.svg)](https://hub.docker.com/r/ginuerzh/gost/)
-[![gost](https://snapcraft.io/gost/badge.svg)](https://snapcraft.io/gost)
+[![Snap Status](https://build.snapcraft.io/badge/ginuerzh/gost.svg)](https://build.snapcraft.io/user/ginuerzh/gost)
+[![Docker Build Status](https://img.shields.io/docker/build/ginuerzh/gost.svg)](https://hub.docker.com/r/ginuerzh/gost/)
 
 [English README](README_en.md)

-### ！！！[V3版本已经可用，欢迎抢先体验](https://latest.gost.run)！！！
-
 特性
 ------

 * 多端口监听
 * 可设置转发代理，支持多级转发(代理链)
 * 支持标准HTTP/HTTPS/HTTP2/SOCKS4(A)/SOCKS5代理协议
-* Web代理支持[探测防御](https://v2.gost.run/probe_resist/)
-* [支持多种隧道类型](https://v2.gost.run/configuration/)
-* [SOCKS5代理支持TLS协商加密](https://v2.gost.run/socks/)
-* [Tunnel UDP over TCP](https://v2.gost.run/socks/)
-* [TCP/UDP透明代理](https://v2.gost.run/redirect/)
-* [本地/远程TCP/UDP端口转发](https://v2.gost.run/port-forwarding/)
-* [支持Shadowsocks(TCP/UDP)协议](https://v2.gost.run/ss/)
-* [支持SNI代理](https://v2.gost.run/sni/)
-* [权限控制](https://v2.gost.run/permission/)
-* [负载均衡](https://v2.gost.run/load-balancing/)
-* [路由控制](https://v2.gost.run/bypass/)
-* DNS[解析](https://v2.gost.run/resolver/)和[代理](https://v2.gost.run/dns/)
-* [TUN/TAP设备](https://v2.gost.run/tuntap/)
+* Web代理支持[探测防御](https://docs.ginuerzh.xyz/gost/probe_resist/)
+* [支持多种隧道类型](https://docs.ginuerzh.xyz/gost/configuration/)
+* [SOCKS5代理支持TLS协商加密](https://docs.ginuerzh.xyz/gost/socks/)
+* [Tunnel UDP over TCP](https://docs.ginuerzh.xyz/gost/socks/)
+* [TCP/UDP透明代理](https://docs.ginuerzh.xyz/gost/redirect/)
+* [本地/远程TCP/UDP端口转发](https://docs.ginuerzh.xyz/gost/port-forwarding/)
+* [支持Shadowsocks(TCP/UDP)协议](https://docs.ginuerzh.xyz/gost/ss/)
+* [支持SNI代理](https://docs.ginuerzh.xyz/gost/sni/)
+* [权限控制](https://docs.ginuerzh.xyz/gost/permission/)
+* [负载均衡](https://docs.ginuerzh.xyz/gost/load-balancing/)
+* [路由控制](https://docs.ginuerzh.xyz/gost/bypass/)
+* DNS[解析](https://docs.ginuerzh.xyz/gost/resolver/)和[代理](https://docs.ginuerzh.xyz/gost/dns/)
+* [TUN/TAP设备](https://docs.ginuerzh.xyz/gost/tuntap/)

-Wiki站点: [v2.gost.run](https://v2.gost.run)
+Wiki站点: <https://docs.ginuerzh.xyz/gost/>

 Telegram讨论群: <https://t.me/gogost>

@ -58,18 +57,11 @@ go build
 #### Docker

 ```bash
-docker run --rm ginuerzh/gost -V
-```
-
-#### Homebrew
-
-```bash
-brew install gost
+docker pull ginuerzh/gost
 ```

 #### Ubuntu商店

-
 ```bash
 sudo snap install core
 sudo snap install gost
@ -195,7 +187,7 @@ gost -L=:8080 -F=h2://server_ip:443
 ```

 #### QUIC
-gost对QUIC的支持是基于[quic-go](https://github.com/quic-go/quic-go)库。
+gost对QUIC的支持是基于[quic-go](https://github.com/lucas-clemente/quic-go)库。

 服务端:
 ```bash
--- a/README_en.md
+++ b/README_en.md
@ -4,32 +4,33 @@ gost - GO Simple Tunnel
 ### A simple security tunnel written in Golang

 [![GoDoc](https://godoc.org/github.com/ginuerzh/gost?status.svg)](https://godoc.org/github.com/ginuerzh/gost)
+[![Build Status](https://travis-ci.org/ginuerzh/gost.svg?branch=master)](https://travis-ci.org/ginuerzh/gost)
 [![Go Report Card](https://goreportcard.com/badge/github.com/ginuerzh/gost)](https://goreportcard.com/report/github.com/ginuerzh/gost)
 [![codecov](https://codecov.io/gh/ginuerzh/gost/branch/master/graphs/badge.svg)](https://codecov.io/gh/ginuerzh/gost/branch/master)
 [![GitHub release](https://img.shields.io/github/release/ginuerzh/gost.svg)](https://github.com/ginuerzh/gost/releases/latest)
-[![Docker](https://img.shields.io/docker/pulls/ginuerzh/gost.svg)](https://hub.docker.com/r/ginuerzh/gost/)
-[![gost](https://snapcraft.io/gost/badge.svg)](https://snapcraft.io/gost)
- 
+[![Snap Status](https://build.snapcraft.io/badge/ginuerzh/gost.svg)](https://build.snapcraft.io/user/ginuerzh/gost)
+[![Docker Build Status](https://img.shields.io/docker/build/ginuerzh/gost.svg)](https://hub.docker.com/r/ginuerzh/gost/)
+
 Features
 ------
 * Listening on multiple ports
 * Multi-level forward proxy - proxy chain
 * Standard HTTP/HTTPS/HTTP2/SOCKS4(A)/SOCKS5 proxy protocols support
-* [Probing resistance](https://v2.gost.run/en/probe_resist/) support for web proxy
-* [Support multiple tunnel types](https://v2.gost.run/en/configuration/)
-* [TLS encryption via negotiation support for SOCKS5 proxy](https://v2.gost.run/en/socks/)
-* [Tunnel UDP over TCP](https://v2.gost.run/en/socks/)
-* [TCP/UDP Transparent proxy](https://v2.gost.run/en/redirect/)
-* [Local/remote TCP/UDP port forwarding](https://v2.gost.run/en/port-forwarding/)
-* [Shadowsocks protocol](https://v2.gost.run/en/ss/)
-* [SNI proxy](https://v2.gost.run/en/sni/)
-* [Permission control](https://v2.gost.run/en/permission/)
-* [Load balancing](https://v2.gost.run/en/load-balancing/)
-* [Routing control](https://v2.gost.run/en/bypass/)
-* DNS [resolver](https://v2.gost.run/resolver/) and [proxy](https://v2.gost.run/dns/)
-* [TUN/TAP device](https://v2.gost.run/en/tuntap/)
+* [Probing resistance](https://docs.ginuerzh.xyz/gost/en/probe_resist/) support for web proxy
+* [Support multiple tunnel types](https://docs.ginuerzh.xyz/gost/en/configuration/)
+* [TLS encryption via negotiation support for SOCKS5 proxy](https://docs.ginuerzh.xyz/gost/en/socks/)
+* [Tunnel UDP over TCP](https://docs.ginuerzh.xyz/gost/en/socks/)
+* [TCP/UDP Transparent proxy](https://docs.ginuerzh.xyz/gost/en/redirect/)
+* [Local/remote TCP/UDP port forwarding](https://docs.ginuerzh.xyz/gost/en/port-forwarding/)
+* [Shadowsocks protocol](https://docs.ginuerzh.xyz/gost/en/ss/)
+* [SNI proxy](https://docs.ginuerzh.xyz/gost/en/sni/)
+* [Permission control](https://docs.ginuerzh.xyz/gost/en/permission/)
+* [Load balancing](https://docs.ginuerzh.xyz/gost/en/load-balancing/)
+* [Routing control](https://docs.ginuerzh.xyz/gost/en/bypass/)
+* DNS [resolver](https://docs.ginuerzh.xyz/gost/resolver/) and [proxy](https://docs.ginuerzh.xyz/gost/dns/)
+* [TUN/TAP device](https://docs.ginuerzh.xyz/gost/en/tuntap/)

-Wiki: [v2.gost.run](https://v2.gost.run/en/)
+Wiki: <https://docs.ginuerzh.xyz/gost/en/>

 Telegram group: <https://t.me/gogost>

@ -53,13 +54,7 @@ go build
 #### Docker

 ```bash
-docker run --rm ginuerzh/gost -V
-```
-
-#### Homebrew
-
-```bash
-brew install gost
+docker pull ginuerzh/gost
 ```

 #### Ubuntu store
@ -218,7 +213,7 @@ gost -L=:8080 -F=h2://server_ip:443

 #### QUIC

-Support for QUIC is based on library [quic-go](https://github.com/quic-go/quic-go).
+Support for QUIC is based on library [quic-go](https://github.com/lucas-clemente/quic-go).

 Server:

--- a/chain.go
+++ b/chain.go
@ -3,9 +3,7 @@ package gost
 import (
 	"context"
 	"errors"
-	"fmt"
 	"net"
-	"syscall"
 	"time"

 	"github.com/go-log/log"
@ -20,8 +18,6 @@ var (
 type Chain struct {
 	isRoute    bool
 	Retries    int
-	Mark       int
-	Interface  string
 	nodeGroups []*NodeGroup
 	route      []Node // nodes in the selected route
 }
@ -38,14 +34,10 @@ func NewChain(nodes ...Node) *Chain {

 // newRoute creates a chain route.
 // a chain route is the final route after node selection.
-func (c *Chain) newRoute(nodes ...Node) *Chain {
-	route := NewChain(nodes...)
-	route.isRoute = true
-	if !c.IsEmpty() {
-		route.Interface = c.Interface
-		route.Mark = c.Mark
-	}
-	return route
+func newRoute(nodes ...Node) *Chain {
+	chain := NewChain(nodes...)
+	chain.isRoute = true
+	return chain
 }

 // Nodes returns the proxy nodes that the chain holds.
@ -143,9 +135,6 @@ func (c *Chain) dialWithOptions(ctx context.Context, network, address string, op
 	if options == nil {
 		options = &ChainOptions{}
 	}
-	if c == nil {
-		c = &Chain{}
-	}
 	route, err := c.selectRouteFor(address)
 	if err != nil {
 		return nil, err
@ -154,9 +143,6 @@ func (c *Chain) dialWithOptions(ctx context.Context, network, address string, op
 	ipAddr := address
 	if address != "" {
 		ipAddr = c.resolve(address, options.Resolver, options.Hosts)
-		if ipAddr == "" {
-			return nil, fmt.Errorf("resolver: domain %s does not exists", address)
-		}
 	}

 	timeout := options.Timeout
@ -164,32 +150,6 @@ func (c *Chain) dialWithOptions(ctx context.Context, network, address string, op
 		timeout = DialTimeout
 	}

-	var controlFunction func(_ string, _ string, c syscall.RawConn) error = nil
-	if c.Mark > 0 {
-		controlFunction = func(_, _ string, cc syscall.RawConn) error {
-			return cc.Control(func(fd uintptr) {
-				ex := setSocketMark(int(fd), c.Mark)
-				if ex != nil {
-					log.Logf("net dialer set mark %d error: %s", c.Mark, ex)
-				} else {
-					// log.Logf("net dialer set mark %d success", options.Mark)
-				}
-			})
-		}
-	}
-
-	if c.Interface != "" {
-		controlFunction = func(_, _ string, cc syscall.RawConn) error {
-			return cc.Control(func(fd uintptr) {
-				err := setSocketInterface(int(fd), c.Interface)
-
-				if err != nil {
-					log.Logf("net dialer set interface %s error: %s", c.Interface, err)
-				}
-			})
-		}
-	}
-
 	if route.IsEmpty() {
 		switch network {
 		case "udp", "udp4", "udp6":
@ -200,7 +160,6 @@ func (c *Chain) dialWithOptions(ctx context.Context, network, address string, op
 		}
 		d := &net.Dialer{
 			Timeout: timeout,
-			Control: controlFunction,
 			// LocalAddr: laddr, // TODO: optional local address
 		}
 		return d.DialContext(ctx, network, ipAddr)
@ -234,11 +193,9 @@ func (*Chain) resolve(addr string, resolver Resolver, hosts *Hosts) string {
 		if err != nil {
 			log.Logf("[resolver] %s: %v", host, err)
 		}
-		if len(ips) == 0 {
-			log.Logf("[resolver] %s: domain does not exists", host)
-			return ""
+		if len(ips) > 0 {
+			return net.JoinHostPort(ips[0].String(), port)
 		}
-		return net.JoinHostPort(ips[0].String(), port)
 	}
 	return addr
 }
@ -329,13 +286,13 @@ func (c *Chain) selectRoute() (route *Chain, err error) {
 // selectRouteFor selects route with bypass testing.
 func (c *Chain) selectRouteFor(addr string) (route *Chain, err error) {
 	if c.IsEmpty() {
-		return c.newRoute(), nil
+		return newRoute(), nil
 	}
 	if c.isRoute {
 		return c, nil
 	}

-	route = c.newRoute()
+	route = newRoute()
 	var nl []Node

 	for _, group := range c.nodeGroups {
@ -353,7 +310,7 @@ func (c *Chain) selectRouteFor(addr string) (route *Chain, err error) {
 			node.DialOptions = append(node.DialOptions,
 				ChainDialOption(route),
 			)
-			route = c.newRoute() // cutoff the chain for multiplex node.
+			route = newRoute() // cutoff the chain for multiplex node.
 		}

 		route.AddNode(node)
@ -371,7 +328,6 @@ type ChainOptions struct {
 	Timeout  time.Duration
 	Hosts    *Hosts
 	Resolver Resolver
-	Mark     int
 }

 // ChainOption allows a common way to set chain options.
--- a/client.go
+++ b/client.go
@ -7,7 +7,7 @@ import (
 	"net/url"
 	"time"

-	"github.com/go-gost/gosocks5"
+	"github.com/ginuerzh/gosocks5"
 )

 // Client is a proxy client.
@ -83,7 +83,6 @@ type Transporter interface {
 type DialOptions struct {
 	Timeout time.Duration
 	Chain   *Chain
-	Host    string
 }

 // DialOption allows a common way to set DialOptions.
@ -103,13 +102,6 @@ func ChainDialOption(chain *Chain) DialOption {
 	}
 }

-// HostDialOption specifies the host used by Transporter.Dial
-func HostDialOption(host string) DialOption {
-	return func(opts *DialOptions) {
-		opts.Host = host
-	}
-}
-
 // HandshakeOptions describes the options for handshake.
 type HandshakeOptions struct {
 	Addr       string
--- a/cmd/gost/cfg.go
+++ b/cmd/gost/cfg.go
@ -5,7 +5,8 @@ import (
 	"crypto/tls"
 	"crypto/x509"
 	"encoding/json"
-	"fmt"
+	"errors"
+	"io/ioutil"
 	"net"
 	"net/url"
 	"os"
@ -43,9 +44,8 @@ var (
 	defaultKeyFile  = "key.pem"
 )

-// Load the certificate from cert & key files and optional client CA file,
-// will use the default certificate if the provided info are invalid.
-func tlsConfig(certFile, keyFile, caFile string) (*tls.Config, error) {
+// Load the certificate from cert and key files, will use the default certificate if the provided info are invalid.
+func tlsConfig(certFile, keyFile string) (*tls.Config, error) {
 	if certFile == "" || keyFile == "" {
 		certFile, keyFile = defaultCertFile, defaultKeyFile
 	}
@ -54,19 +54,7 @@ func tlsConfig(certFile, keyFile, caFile string) (*tls.Config, error) {
 	if err != nil {
 		return nil, err
 	}
-
-	cfg := &tls.Config{Certificates: []tls.Certificate{cert}}
-
-	pool, err := loadCA(caFile)
-	if err != nil {
-		return nil, err
-	}
-	if pool != nil {
-		cfg.ClientCAs = pool
-		cfg.ClientAuth = tls.RequireAndVerifyClientCert
-	}
-
-	return cfg, nil
+	return &tls.Config{Certificates: []tls.Certificate{cert}}, nil
 }

 func loadCA(caFile string) (cp *x509.CertPool, err error) {
@ -74,12 +62,12 @@ func loadCA(caFile string) (cp *x509.CertPool, err error) {
 		return
 	}
 	cp = x509.NewCertPool()
-	data, err := os.ReadFile(caFile)
+	data, err := ioutil.ReadFile(caFile)
 	if err != nil {
 		return nil, err
 	}
 	if !cp.AppendCertsFromPEM(data) {
-		return nil, fmt.Errorf("loadCA %s: AppendCertsFromPEM failed", caFile)
+		return nil, errors.New("AppendCertsFromPEM failed")
 	}
 	return
 }
@ -110,7 +98,6 @@ func parseUsers(authFile string) (users []*url.Userinfo, err error) {
 	if err != nil {
 		return
 	}
-	defer file.Close()
 	scanner := bufio.NewScanner(file)
 	for scanner.Scan() {
 		line := strings.TrimSpace(scanner.Text())
@ -156,38 +143,33 @@ func parseIP(s string, port string) (ips []string) {
 		port = "8080" // default port
 	}

-	addrFn := func(s, port string) string {
-		c := strings.Count(s, ":")
-		if c == 0 || //ipv4 or domain
-			s[len(s)-1] == ']' { //[ipv6]
-			return s + ":" + port
-		}
-		if c > 1 && s[0] != '[' { // ipv6
-			return "[" + s + "]:" + port
-		}
-		return s //ipv4:port or [ipv6]:port
-	}
-
 	file, err := os.Open(s)
 	if err != nil {
 		ss := strings.Split(s, ",")
 		for _, s := range ss {
 			s = strings.TrimSpace(s)
 			if s != "" {
-				ips = append(ips, addrFn(s, port))
+				// TODO: support IPv6
+				if !strings.Contains(s, ":") {
+					s = s + ":" + port
+				}
+				ips = append(ips, s)
 			}

 		}
 		return
 	}
-	defer file.Close()
+
 	scanner := bufio.NewScanner(file)
 	for scanner.Scan() {
 		line := strings.TrimSpace(scanner.Text())
 		if line == "" || strings.HasPrefix(line, "#") {
 			continue
 		}
-		ips = append(ips, addrFn(line, port))
+		if !strings.Contains(line, ":") {
+			line = line + ":" + port
+		}
+		ips = append(ips, line)
 	}
 	return
 }
--- a/cmd/gost/main.go
+++ b/cmd/gost/main.go
@ -31,9 +31,7 @@ func init() {

 	flag.Var(&baseCfg.route.ChainNodes, "F", "forward address, can make a forward chain")
 	flag.Var(&baseCfg.route.ServeNodes, "L", "listen address, can listen on multiple ports (required)")
-	flag.IntVar(&baseCfg.route.Mark, "M", 0, "Specify out connection mark")
 	flag.StringVar(&configureFile, "C", "", "configure file")
-	flag.StringVar(&baseCfg.route.Interface, "I", "", "Interface to bind")
 	flag.BoolVar(&baseCfg.Debug, "D", false, "enable debug log")
 	flag.BoolVar(&printVersion, "V", false, "print version")
 	if pprofEnabled {
@ -42,7 +40,7 @@ func init() {
 	flag.Parse()

 	if printVersion {
-		fmt.Fprintf(os.Stdout, "gost %s (%s %s/%s)\n",
+		fmt.Fprintf(os.Stderr, "gost %s (%s %s/%s)\n",
 			gost.Version, runtime.Version(), runtime.GOOS, runtime.GOARCH)
 		os.Exit(0)
 	}
@ -69,7 +67,7 @@ func main() {
 	}

 	// NOTE: as of 2.6, you can use custom cert/key files to initialize the default certificate.
-	tlsConfig, err := tlsConfig(defaultCertFile, defaultKeyFile, "")
+	tlsConfig, err := tlsConfig(defaultCertFile, defaultKeyFile)
 	if err != nil {
 		// generate random self-signed certificate.
 		cert, err := gost.GenCertificate()
--- a/cmd/gost/peer.go
+++ b/cmd/gost/peer.go
@ -5,6 +5,7 @@ import (
 	"bytes"
 	"encoding/json"
 	"io"
+	"io/ioutil"
 	"strconv"
 	"strings"
 	"time"
@ -13,16 +14,14 @@ import (
 )

 type peerConfig struct {
-	Strategy     string `json:"strategy"`
-	MaxFails     int    `json:"max_fails"`
-	FastestCount int    `json:"fastest_count"` // topN fastest node count
-	FailTimeout  time.Duration
-	period       time.Duration // the period for live reloading
-
-	Nodes     []string `json:"nodes"`
-	group     *gost.NodeGroup
-	baseNodes []gost.Node
-	stopped   chan struct{}
+	Strategy    string `json:"strategy"`
+	MaxFails    int    `json:"max_fails"`
+	FailTimeout time.Duration
+	period      time.Duration // the period for live reloading
+	Nodes       []string      `json:"nodes"`
+	group       *gost.NodeGroup
+	baseNodes   []gost.Node
+	stopped     chan struct{}
 }

 func newPeerConfig() *peerConfig {
@ -53,7 +52,6 @@ func (cfg *peerConfig) Reload(r io.Reader) error {
 				FailTimeout: cfg.FailTimeout,
 			},
 			&gost.InvalidFilter{},
-			gost.NewFastestFilter(0, cfg.FastestCount),
 		),
 		gost.WithStrategy(gost.NewStrategy(cfg.Strategy)),
 	)
@ -85,7 +83,7 @@ func (cfg *peerConfig) Reload(r io.Reader) error {
 }

 func (cfg *peerConfig) parse(r io.Reader) error {
-	data, err := io.ReadAll(r)
+	data, err := ioutil.ReadAll(r)
 	if err != nil {
 		return err
 	}
@ -128,8 +126,6 @@ func (cfg *peerConfig) parse(r io.Reader) error {
 			cfg.Strategy = ss[1]
 		case "max_fails":
 			cfg.MaxFails, _ = strconv.Atoi(ss[1])
-		case "fastest_count":
-			cfg.FastestCount, _ = strconv.Atoi(ss[1])
 		case "fail_timeout":
 			cfg.FailTimeout, _ = time.ParseDuration(ss[1])
 		case "reload":
--- a/cmd/gost/route.go
+++ b/cmd/gost/route.go
@ -3,14 +3,12 @@ package main
 import (
 	"crypto/sha256"
 	"crypto/tls"
-	"crypto/x509"
 	"encoding/base64"
 	"fmt"
 	"net"
 	"net/url"
 	"os"
 	"strings"
-	"time"

 	"github.com/ginuerzh/gost"
 	"github.com/go-log/log"
@ -30,15 +28,11 @@ type route struct {
 	ServeNodes stringList
 	ChainNodes stringList
 	Retries    int
-	Mark       int
-	Interface  string
 }

 func (r *route) parseChain() (*gost.Chain, error) {
 	chain := gost.NewChain()
 	chain.Retries = r.Retries
-	chain.Mark = r.Mark
-	chain.Interface = r.Interface
 	gid := 1 // group ID

 	for _, ns := range r.ChainNodes {
@ -66,7 +60,6 @@ func (r *route) parseChain() (*gost.Chain, error) {
 					FailTimeout: nodes[0].GetDuration("fail_timeout"),
 				},
 				&gost.InvalidFilter{},
-				gost.NewFastestFilter(0, nodes[0].GetInt("fastest_count")),
 			),
 			gost.WithStrategy(gost.NewStrategy(nodes[0].Get("strategy"))),
 		)
@ -135,35 +128,6 @@ func parseChainNode(ns string) (nodes []gost.Node, err error) {
 		InsecureSkipVerify: !node.GetBool("secure"),
 		RootCAs:            rootCAs,
 	}
-
-	// If the argument `ca` is given, but not open `secure`, we verify the
-	// certificate manually.
-	if rootCAs != nil && !node.GetBool("secure") {
-		tlsCfg.VerifyConnection = func(state tls.ConnectionState) error {
-			opts := x509.VerifyOptions{
-				Roots:         rootCAs,
-				CurrentTime:   time.Now(),
-				DNSName:       "",
-				Intermediates: x509.NewCertPool(),
-			}
-
-			certs := state.PeerCertificates
-			for i, cert := range certs {
-				if i == 0 {
-					continue
-				}
-				opts.Intermediates.AddCert(cert)
-			}
-
-			_, err = certs[0].Verify(opts)
-			return err
-		}
-	}
-
-	if cert, err := tls.LoadX509KeyPair(node.Get("cert"), node.Get("key")); err == nil {
-		tlsCfg.Certificates = []tls.Certificate{cert}
-	}
-
 	wsOpts := &gost.WSOptions{}
 	wsOpts.EnableCompression = node.GetBool("compression")
 	wsOpts.ReadBufferSize = node.GetInt("rbuf")
@ -213,12 +177,6 @@ func parseChainNode(ns string) (nodes []gost.Node, err error) {
 			Timeout:     timeout,
 			IdleTimeout: node.GetDuration("idle"),
 		}
-		if config.KeepAlive {
-			config.KeepAlivePeriod = node.GetDuration("ttl")
-			if config.KeepAlivePeriod == 0 {
-				config.KeepAlivePeriod = 10 * time.Second
-			}
-		}

 		if cipher := node.Get("cipher"); cipher != "" {
 			sum := sha256.Sum256([]byte(cipher))
@ -242,8 +200,6 @@ func parseChainNode(ns string) (nodes []gost.Node, err error) {
 		tr = gost.FakeTCPTransporter()
 	case "udp":
 		tr = gost.UDPTransporter()
-	case "vsock":
-		tr = gost.VSOCKTransporter()
 	default:
 		tr = gost.TCPTransporter()
 	}
@ -278,14 +234,8 @@ func parseChainNode(ns string) (nodes []gost.Node, err error) {
 		connector = gost.AutoConnector(node.User)
 	}

-	host := node.Get("host")
-	if host == "" {
-		host = node.Host
-	}
-
 	node.DialOptions = append(node.DialOptions,
 		gost.TimeoutDialOption(timeout),
-		gost.HostDialOption(host),
 	)

 	node.ConnectOptions = []gost.ConnectOption{
@ -294,6 +244,11 @@ func parseChainNode(ns string) (nodes []gost.Node, err error) {
 		gost.NoDelayConnectOption(node.GetBool("nodelay")),
 	}

+	host := node.Get("host")
+	if host == "" {
+		host = node.Host
+	}
+
 	sshConfig := &gost.SSHConfig{}
 	if s := node.Get("ssh_key"); s != "" {
 		key, err := gost.ParseSSHKeyFile(s)
@ -387,7 +342,7 @@ func (r *route) GenRouters() ([]router, error) {
 			}
 		}
 		certFile, keyFile := node.Get("cert"), node.Get("key")
-		tlsCfg, err := tlsConfig(certFile, keyFile, node.Get("ca"))
+		tlsCfg, err := tlsConfig(certFile, keyFile)
 		if err != nil && certFile != "" && keyFile != "" {
 			return nil, err
 		}
@ -467,12 +422,6 @@ func (r *route) GenRouters() ([]router, error) {
 				Timeout:     timeout,
 				IdleTimeout: node.GetDuration("idle"),
 			}
-			if config.KeepAlive {
-				config.KeepAlivePeriod = node.GetDuration("ttl")
-				if config.KeepAlivePeriod == 0 {
-					config.KeepAlivePeriod = 10 * time.Second
-				}
-			}
 			if cipher := node.Get("cipher"); cipher != "" {
 				sum := sha256.Sum256([]byte(cipher))
 				config.Key = sum[:]
@ -492,8 +441,6 @@ func (r *route) GenRouters() ([]router, error) {
 				chain.Nodes()[len(chain.Nodes())-1].Client.Transporter = gost.SSHForwardTransporter()
 			}
 			ln, err = gost.TCPListener(node.Addr)
-		case "vsock":
-			ln, err = gost.VSOCKListener(node.Addr)
 		case "udp":
 			ln, err = gost.UDPListener(node.Addr, &gost.UDPListenConfig{
 				TTL:       ttl,
@ -669,8 +616,6 @@ func (r *route) GenRouters() ([]router, error) {
 			gost.IPsHandlerOption(ips),
 			gost.TCPModeHandlerOption(node.GetBool("tcp")),
 			gost.IPRoutesHandlerOption(tunRoutes...),
-			gost.ProxyAgentHandlerOption(node.Get("proxyAgent")),
-			gost.HTTPTunnelHandlerOption(node.GetBool("httpTunnel")),
 		)

 		rt := router{
--- a/common_test.go
+++ b/common_test.go
@ -7,6 +7,7 @@ import (
 	"errors"
 	"fmt"
 	"io"
+	"io/ioutil"
 	"net"
 	"net/http"
 	"net/url"
@ -35,7 +36,7 @@ func init() {

 var (
 	httpTestHandler = http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
-		data, _ := io.ReadAll(r.Body)
+		data, _ := ioutil.ReadAll(r.Body)
 		if len(data) == 0 {
 			data = []byte("Hello World!")
 		}
@ -86,7 +87,7 @@ func httpRoundtrip(conn net.Conn, targetURL string, data []byte) (err error) {
 		return errors.New(resp.Status)
 	}

-	recv, err := io.ReadAll(resp.Body)
+	recv, err := ioutil.ReadAll(resp.Body)
 	if err != nil {
 		return
 	}
--- a/dns.go
+++ b/dns.go
@ -7,6 +7,7 @@ import (
 	"encoding/base64"
 	"errors"
 	"io"
+	"io/ioutil"
 	"net"
 	"net/http"
 	"strconv"
@ -266,7 +267,7 @@ func (l *dnsListener) ServeHTTP(w http.ResponseWriter, r *http.Request) {
 			return
 		}

-		buf, err = io.ReadAll(r.Body)
+		buf, err = ioutil.ReadAll(r.Body)
 		if err != nil {
 			http.Error(w, http.StatusText(http.StatusInternalServerError), http.StatusInternalServerError)
 			return
--- a/examples/ssu/ssu.go
+++ b/examples/ssu/ssu.go
@ -6,7 +6,7 @@ import (
 	"net"
 	"strconv"

-	"github.com/go-gost/gosocks5"
+	"github.com/ginuerzh/gosocks5"
 	ss "github.com/shadowsocks/shadowsocks-go/shadowsocks"
 )

--- a/forward.go
+++ b/forward.go
@ -10,9 +10,9 @@ import (

 	"fmt"

-	"github.com/go-gost/gosocks5"
+	"github.com/ginuerzh/gosocks5"
 	"github.com/go-log/log"
-	smux "github.com/xtaci/smux"
+	smux "gopkg.in/xtaci/smux.v1"
 )

 type forwardConnector struct {
@ -131,7 +131,6 @@ func (h *tcpDirectForwardHandler) Handle(conn net.Conn) {
 		cc, err = h.options.Chain.Dial(node.Addr,
 			RetryChainOption(h.options.Retries),
 			TimeoutChainOption(h.options.Timeout),
-			ResolverChainOption(h.options.Resolver),
 		)
 		if err != nil {
 			log.Logf("[tcp] %s -> %s : %s", conn.RemoteAddr(), conn.LocalAddr(), err)
@ -198,12 +197,7 @@ func (h *udpDirectForwardHandler) Handle(conn net.Conn) {
 		}
 	}

-	cc, err := h.options.Chain.DialContext(
-		context.Background(),
-		"udp",
-		node.Addr,
-		ResolverChainOption(h.options.Resolver),
-	)
+	cc, err := h.options.Chain.DialContext(context.Background(), "udp", node.Addr)
 	if err != nil {
 		node.MarkDead()
 		log.Logf("[udp] %s - %s : %s", conn.RemoteAddr(), conn.LocalAddr(), err)
--- a/go.mod
+++ b/go.mod
@ -1,60 +1,49 @@
 module github.com/ginuerzh/gost

-go 1.22
-
-replace github.com/templexxx/cpu v0.0.7 => github.com/templexxx/cpu v0.0.10-0.20211111114238-98168dcec14a
+go 1.13

 require (
-	git.torproject.org/pluggable-transports/goptlib.git v1.3.0
+	git.torproject.org/pluggable-transports/goptlib.git v0.0.0-20180321061416-7d56ec4f381e
+	git.torproject.org/pluggable-transports/obfs4.git v0.0.0-20181103133120-08f4d470188e
 	github.com/LiamHaworth/go-tproxy v0.0.0-20190726054950-ef7efd7f24ed
-	github.com/asaskevich/govalidator v0.0.0-20230301143203-a9d515a09cc2
-	github.com/go-gost/gosocks4 v0.0.1
-	github.com/go-gost/gosocks5 v0.3.0
-	github.com/go-gost/relay v0.1.1-0.20211123134818-8ef7fd81ffd7
-	github.com/go-gost/tls-dissector v0.0.2-0.20220408131628-aac992c27451
-	github.com/go-log/log v0.2.0
+	github.com/Yawning/chacha20 v0.0.0-20170904085104-e3b1f968fc63 // indirect
+	github.com/bifurcation/mint v0.0.0-20181105071958-a14404e9a861 // indirect
+	github.com/cheekybits/genny v1.0.0 // indirect
+	github.com/coreos/go-iptables v0.4.5 // indirect
+	github.com/dchest/siphash v1.2.1 // indirect
+	github.com/docker/libcontainer v2.2.1+incompatible
+	github.com/ginuerzh/gosocks4 v0.0.1
+	github.com/ginuerzh/gosocks5 v0.2.0
+	github.com/ginuerzh/tls-dissector v0.0.2-0.20200224064855-24ab2b3a3796
+	github.com/go-gost/relay v0.1.0
+	github.com/go-log/log v0.1.0
 	github.com/gobwas/glob v0.2.3
-	github.com/gorilla/websocket v1.5.1
-	github.com/klauspost/compress v1.17.6
-	github.com/mdlayher/vsock v1.2.1
-	github.com/miekg/dns v1.1.58
-	github.com/quic-go/quic-go v0.45.0
-	github.com/ryanuber/go-glob v1.0.0
-	github.com/shadowsocks/go-shadowsocks2 v0.1.5
-	github.com/shadowsocks/shadowsocks-go v0.0.0-20200409064450-3e585ff90601
-	github.com/songgao/water v0.0.0-20200317203138-2b4b6d7c09d8
-	github.com/xtaci/kcp-go/v5 v5.6.7
-	github.com/xtaci/smux v1.5.24
+	github.com/golang/mock v1.2.0 // indirect
+	github.com/google/gopacket v1.1.17 // indirect
+	github.com/gorilla/websocket v1.4.0 // indirect
+	github.com/hashicorp/golang-lru v0.5.0 // indirect
+	github.com/klauspost/compress v1.4.1
+	github.com/klauspost/cpuid v1.2.0 // indirect
+	github.com/klauspost/reedsolomon v1.7.0 // indirect
+	github.com/lucas-clemente/aes12 v0.0.0-20171027163421-cd47fb39b79f // indirect
+	github.com/lucas-clemente/quic-go v0.10.0
+	github.com/lucas-clemente/quic-go-certificates v0.0.0-20160823095156-d2f86524cced // indirect
+	github.com/miekg/dns v1.1.27
+	github.com/milosgajdos83/tenus v0.0.0-20190415114537-1f3ed00ae7d8
+	github.com/onsi/ginkgo v1.7.0 // indirect
+	github.com/onsi/gomega v1.4.3 // indirect
+	github.com/pkg/errors v0.8.1 // indirect
+	github.com/ryanuber/go-glob v0.0.0-20170128012129-256dc444b735
+	github.com/shadowsocks/go-shadowsocks2 v0.1.0
+	github.com/shadowsocks/shadowsocks-go v0.0.0-20170121203516-97a5c71f80ba
+	github.com/songgao/water v0.0.0-20190725173103-fd331bda3f4b
+	github.com/templexxx/cpufeat v0.0.0-20180724012125-cef66df7f161 // indirect
+	github.com/templexxx/xor v0.0.0-20181023030647-4e92f724b73b // indirect
+	github.com/tjfoc/gmsm v1.0.1 // indirect
 	github.com/xtaci/tcpraw v1.2.25
-	gitlab.com/yawning/obfs4.git v0.0.0-20220204003609-77af0cba934d
-	golang.org/x/crypto v0.24.0
-	golang.org/x/net v0.26.0
-)
-
-require (
-	filippo.io/edwards25519 v1.0.0-rc.1.0.20210721174708-390f27c3be20 // indirect
-	github.com/aead/chacha20 v0.0.0-20180709150244-8b13a72661da // indirect
-	github.com/coreos/go-iptables v0.6.0 // indirect
-	github.com/dchest/siphash v1.2.2 // indirect
-	github.com/go-task/slim-sprig/v3 v3.0.0 // indirect
-	github.com/google/gopacket v1.1.19 // indirect
-	github.com/google/pprof v0.0.0-20240528025155-186aa0362fba // indirect
-	github.com/klauspost/cpuid/v2 v2.2.6 // indirect
-	github.com/klauspost/reedsolomon v1.12.0 // indirect
-	github.com/mdlayher/socket v0.4.1 // indirect
-	github.com/onsi/ginkgo/v2 v2.19.0 // indirect
-	github.com/pkg/errors v0.9.1 // indirect
-	github.com/riobard/go-bloom v0.0.0-20200614022211-cdc8013cb5b3 // indirect
-	github.com/templexxx/cpu v0.1.0 // indirect
-	github.com/templexxx/xorsimd v0.4.2 // indirect
-	github.com/tjfoc/gmsm v1.4.1 // indirect
-	github.com/xtaci/lossyconn v0.0.0-20200209145036-adba10fffc37 // indirect
-	gitlab.com/yawning/edwards25519-extra.git v0.0.0-20211229043746-2f91fcc9fbdb // indirect
-	go.uber.org/mock v0.4.0 // indirect
-	golang.org/x/exp v0.0.0-20240604190554-fc45aab8b7f8 // indirect
-	golang.org/x/mod v0.18.0 // indirect
-	golang.org/x/sync v0.7.0 // indirect
-	golang.org/x/sys v0.21.0 // indirect
-	golang.org/x/text v0.16.0 // indirect
-	golang.org/x/tools v0.22.0 // indirect
+	golang.org/x/crypto v0.0.0-20200221231518-2aa609cf4a9d
+	golang.org/x/net v0.0.0-20190923162816-aa69164e4478
+	gopkg.in/gorilla/websocket.v1 v1.4.0
+	gopkg.in/xtaci/kcp-go.v4 v4.3.2
+	gopkg.in/xtaci/smux.v1 v1.0.7
 )
--- a/go.sum
+++ b/go.sum
@ -1,204 +1,145 @@
-cloud.google.com/go v0.26.0/go.mod h1:aQUYkXzVsufM+DwF1aE+0xfcU+56JwCaLick0ClmMTw=
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 golang.org/x/net v0.0.0-20190404232315-eb5bcb51f2a3/go.mod h1:t9HGtf8HONx5eT2rtn7q6eTqICYqUVnKs3thJo3Qplg=
 golang.org/x/net v0.0.0-20190620200207-3b0461eec859/go.mod h1:z5CRVTTTmAJ677TzLLGU+0bjPO0LkuOLi4/5GtJWs/s=
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-golang.org/x/net v0.26.0/go.mod h1:5YKkiSynbBIh3p6iOc/vibscux0x38BZDkn8sCUPxHE=
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 golang.org/x/sync v0.0.0-20180314180146-1d60e4601c6f/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM=
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 golang.org/x/sync v0.0.0-20190423024810-112230192c58/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM=
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-golang.org/x/sync v0.7.0/go.mod h1:Czt+wKu1gCyEFDUtn0jG5QVvpJ6rzVqr5aXyt9drQfk=
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 golang.org/x/sys v0.0.0-20190215142949-d0b11bdaac8a/go.mod h1:STP8DvDyc/dI5b8T5hshtkjS+E42TnysNCUPdjciGhY=
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 golang.org/x/sys v0.0.0-20190412213103-97732733099d/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
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-golang.org/x/sys v0.5.0/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
-golang.org/x/sys v0.21.0 h1:rF+pYz3DAGSQAxAu1CbC7catZg4ebC4UIeIhKxBZvws=
-golang.org/x/sys v0.21.0/go.mod h1:/VUhepiaJMQUp4+oa/7Zr1D23ma6VTLIYjOOTFZPUcA=
-golang.org/x/term v0.0.0-20201117132131-f5c789dd3221/go.mod h1:Nr5EML6q2oocZ2LXRh80K7BxOlk5/8JxuGnuhpl+muw=
-golang.org/x/term v0.0.0-20201126162022-7de9c90e9dd1/go.mod h1:bj7SfCRtBDWHUb9snDiAeCFNEtKQo2Wmx5Cou7ajbmo=
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 golang.org/x/text v0.3.0/go.mod h1:NqM8EUOU14njkJ3fqMW+pc6Ldnwhi/IjpwHt7yyuwOQ=
-golang.org/x/text v0.3.3/go.mod h1:5Zoc/QRtKVWzQhOtBMvqHzDpF6irO9z98xDceosuGiQ=
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-golang.org/x/text v0.16.0/go.mod h1:GhwF1Be+LQoKShO3cGOHzqOgRrGaYc9AvblQOmPVHnI=
-golang.org/x/time v0.5.0 h1:o7cqy6amK/52YcAKIPlM3a+Fpj35zvRj2TP+e1xFSfk=
-golang.org/x/time v0.5.0/go.mod h1:3BpzKBy/shNhVucY/MWOyx10tF3SFh9QdLuxbVysPQM=
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 golang.org/x/xerrors v0.0.0-20191011141410-1b5146add898/go.mod h1:I/5z698sn9Ka8TeJc9MKroUUfqBBauWjQqLJ2OPfmY0=
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-google.golang.org/grpc v1.19.0/go.mod h1:mqu4LbDTu4XGKhr4mRzUsmM4RtVoemTSY81AxZiDr8c=
-google.golang.org/grpc v1.23.0/go.mod h1:Y5yQAOtifL1yxbo5wqy6BxZv8vAUGQwXBOALyacEbxg=
-google.golang.org/grpc v1.25.1/go.mod h1:c3i+UQWmh7LiEpx4sFZnkU36qjEYZ0imhYfXVyQciAY=
-google.golang.org/grpc v1.31.0/go.mod h1:N36X2cJ7JwdamYAgDz+s+rVMFjt3numwzf/HckM8pak=
-google.golang.org/protobuf v0.0.0-20200109180630-ec00e32a8dfd/go.mod h1:DFci5gLYBciE7Vtevhsrf46CRTquxDuWsQurQQe4oz8=
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-google.golang.org/protobuf v1.23.0/go.mod h1:EGpADcykh3NcUnDUJcl1+ZksZNG86OlYog2l/sGQquU=
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-google.golang.org/protobuf v1.33.0/go.mod h1:c6P6GXX6sHbq/GpV6MGZEdwhWPcYBgnhAHhKbcUYpos=
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-gopkg.in/yaml.v3 v3.0.1/go.mod h1:K4uyk7z7BCEPqu6E+C64Yfv1cQ7kz7rIZviUmN+EgEM=
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+gopkg.in/fsnotify.v1 v1.4.7/go.mod h1:Tz8NjZHkW78fSQdbUxIjBTcgA1z1m8ZHf0WmKUhAMys=
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+gopkg.in/xtaci/smux.v1 v1.0.7/go.mod h1:NbrPjLp8lNAYN8KqTplnFr2JjIBbr7CdHBkHtHsXtWA=
+gopkg.in/yaml.v2 v2.2.1 h1:mUhvW9EsL+naU5Q3cakzfE91YhliOondGd6ZrsDBHQE=
+gopkg.in/yaml.v2 v2.2.1/go.mod h1:hI93XBmqTisBFMUTm0b8Fm+jr3Dg1NNxqwp+5A1VGuI=
--- a/gost.go
+++ b/gost.go
@ -20,7 +20,7 @@ import (
 )

 // Version is the gost version.
-const Version = "2.12.0"
+const Version = "2.11.0"

 // Debug is a flag that enables the debug log.
 var Debug bool
@ -80,8 +80,6 @@ var (
 	// DefaultUserAgent is the default HTTP User-Agent header used by HTTP and websocket.
 	DefaultUserAgent = "Chrome/78.0.3904.106"

-	DefaultProxyAgent = "gost/" + Version
-
 	// DefaultMTU is the default mtu for tun/tap device
 	DefaultMTU = 1350
 )
@ -149,7 +147,9 @@ func (rw *readWriter) Write(p []byte) (n int, err error) {
 	return rw.w.Write(p)
 }

-var nopClientConn = &nopConn{}
+var (
+	nopClientConn = &nopConn{}
+)

 // a nop connection implements net.Conn,
 // it does nothing.
--- a/gost.png
+++ b/gost.png
--- a/handler.go
+++ b/handler.go
@ -7,8 +7,8 @@ import (
 	"net/url"
 	"time"

-	"github.com/go-gost/gosocks4"
-	"github.com/go-gost/gosocks5"
+	"github.com/ginuerzh/gosocks4"
+	"github.com/ginuerzh/gosocks5"
 	"github.com/go-log/log"
 )

@ -42,8 +42,6 @@ type HandlerOptions struct {
 	IPs           []string
 	TCPMode       bool
 	IPRoutes      []IPRoute
-	ProxyAgent    string
-	HTTPTunnel    bool
 }

 // HandlerOption allows a common way to set handler options.
@ -213,20 +211,6 @@ func IPRoutesHandlerOption(routes ...IPRoute) HandlerOption {
 	}
 }

-// ProxyAgentHandlerOption sets the proxy agent for http handler.
-func ProxyAgentHandlerOption(agent string) HandlerOption {
-	return func(opts *HandlerOptions) {
-		opts.ProxyAgent = agent
-	}
-}
-
-// HTTPTunnelHandlerOption sets the Tunnel mode for HTTP client used in HTTP handler.
-func HTTPTunnelHandlerOption(tunnelMode bool) HandlerOption {
-	return func(opts *HandlerOptions) {
-		opts.HTTPTunnel = tunnelMode
-	}
-}
-
 type autoHandler struct {
 	options *HandlerOptions
 }
--- a/http.go
+++ b/http.go
@ -6,7 +6,6 @@ import (
 	"context"
 	"encoding/base64"
 	"fmt"
-	"io"
 	"net"
 	"net/http"
 	"net/http/httputil"
@ -174,12 +173,7 @@ func (h *httpHandler) handleRequest(conn net.Conn, req *http.Request) {
 		ProtoMinor: 1,
 		Header:     http.Header{},
 	}
-
-	proxyAgent := DefaultProxyAgent
-	if h.options.ProxyAgent != "" {
-		proxyAgent = h.options.ProxyAgent
-	}
-	resp.Header.Add("Proxy-Agent", proxyAgent)
+	resp.Header.Add("Proxy-Agent", "gost/"+Version)

 	if !Can("tcp", host, h.options.Whitelist, h.options.Blacklist) {
 		log.Logf("[http] %s - %s : Unauthorized to tcp connect to %s",
@ -258,9 +252,7 @@ func (h *httpHandler) handleRequest(conn net.Conn, req *http.Request) {

 		// forward http request
 		lastNode := route.LastNode()
-		if req.Method != http.MethodConnect &&
-			lastNode.Protocol == "http" &&
-			!h.options.HTTPTunnel {
+		if req.Method != http.MethodConnect && lastNode.Protocol == "http" {
 			err = h.forwardRequest(conn, req, route)
 			if err == nil {
 				return
@ -293,65 +285,27 @@ func (h *httpHandler) handleRequest(conn net.Conn, req *http.Request) {
 	}
 	defer cc.Close()

-	if req.Method != http.MethodConnect {
-		h.handleProxy(conn, cc, req)
-		return
-	}
+	if req.Method == http.MethodConnect {
+		b := []byte("HTTP/1.1 200 Connection established\r\n" +
+			"Proxy-Agent: gost/" + Version + "\r\n\r\n")
+		if Debug {
+			log.Logf("[http] %s <- %s\n%s", conn.RemoteAddr(), conn.LocalAddr(), string(b))
+		}
+		conn.Write(b)
+	} else {
+		req.Header.Del("Proxy-Connection")

-	b := []byte("HTTP/1.1 200 Connection established\r\n" +
-		"Proxy-Agent: " + proxyAgent + "\r\n\r\n")
-	if Debug {
-		log.Logf("[http] %s <- %s\n%s", conn.RemoteAddr(), conn.LocalAddr(), string(b))
+		if err = req.Write(cc); err != nil {
+			log.Logf("[http] %s -> %s : %s", conn.RemoteAddr(), conn.LocalAddr(), err)
+			return
+		}
 	}
-	conn.Write(b)

 	log.Logf("[http] %s <-> %s", conn.RemoteAddr(), host)
 	transport(conn, cc)
 	log.Logf("[http] %s >-< %s", conn.RemoteAddr(), host)
 }

-func (h *httpHandler) handleProxy(rw, cc io.ReadWriter, req *http.Request) (err error) {
-	req.Header.Del("Proxy-Connection")
-
-	if err = req.Write(cc); err != nil {
-		return err
-	}
-
-	ch := make(chan error, 1)
-
-	go func() {
-		ch <- copyBuffer(rw, cc)
-	}()
-
-	for {
-		err := func() error {
-			req, err := http.ReadRequest(bufio.NewReader(rw))
-			if err != nil {
-				return err
-			}
-
-			if Debug {
-				dump, _ := httputil.DumpRequest(req, false)
-				log.Log(string(dump))
-			}
-
-			req.Header.Del("Proxy-Connection")
-
-			if err = req.Write(cc); err != nil {
-				return err
-			}
-			return nil
-		}()
-		ch <- err
-
-		if err != nil {
-			break
-		}
-	}
-
-	return <-ch
-}
-
 func (h *httpHandler) authenticate(conn net.Conn, req *http.Request, resp *http.Response) (ok bool) {
 	u, p, _ := basicProxyAuth(req.Header.Get("Proxy-Authorization"))
 	if Debug && (u != "" || p != "") {
@ -409,16 +363,10 @@ func (h *httpHandler) authenticate(conn net.Conn, req *http.Request, resp *http.
 			conn.RemoteAddr(), conn.LocalAddr())
 		resp.StatusCode = http.StatusProxyAuthRequired
 		resp.Header.Add("Proxy-Authenticate", "Basic realm=\"gost\"")
-		if strings.ToLower(req.Header.Get("Proxy-Connection")) == "keep-alive" {
-			// XXX libcurl will keep sending auth request in same conn
-			// which we don't supported yet.
-			resp.Header.Add("Connection", "close")
-			resp.Header.Add("Proxy-Connection", "close")
-		}
 	} else {
 		resp.Header = http.Header{}
 		resp.Header.Set("Server", "nginx/1.14.1")
-		resp.Header.Set("Date", time.Now().UTC().Format(http.TimeFormat))
+		resp.Header.Set("Date", time.Now().Format(http.TimeFormat))
 		if resp.StatusCode == http.StatusOK {
 			resp.Header.Set("Connection", "keep-alive")
 		}
--- a/http2.go
+++ b/http2.go
@ -9,6 +9,7 @@ import (
 	"errors"
 	"fmt"
 	"io"
+	"io/ioutil"
 	"net"
 	"net/http"
 	"net/http/httputil"
@ -233,7 +234,7 @@ func (tr *h2Transporter) Dial(addr string, options ...DialOption) (net.Conn, err

 		transport := http2.Transport{
 			TLSClientConfig: tr.tlsConfig,
-			DialTLS: func(network, adr string, cfg *tls.Config) (net.Conn, error) {
+			DialTLS: func(network, addr string, cfg *tls.Config) (net.Conn, error) {
 				conn, err := opts.Chain.Dial(addr)
 				if err != nil {
 					return nil, err
@ -255,13 +256,13 @@ func (tr *h2Transporter) Dial(addr string, options ...DialOption) (net.Conn, err
 	pr, pw := io.Pipe()
 	req := &http.Request{
 		Method:        http.MethodConnect,
-		URL:           &url.URL{Scheme: "https", Host: opts.Host},
+		URL:           &url.URL{Scheme: "https", Host: addr},
 		Header:        make(http.Header),
 		Proto:         "HTTP/2.0",
 		ProtoMajor:    2,
 		ProtoMinor:    0,
 		Body:          pr,
-		Host:          opts.Host,
+		Host:          addr,
 		ContentLength: -1,
 	}
 	if tr.path != "" {
@ -364,11 +365,7 @@ func (h *http2Handler) roundTrip(w http.ResponseWriter, r *http.Request) {
 		log.Logf("[http2] %s - %s\n%s", r.RemoteAddr, laddr, string(dump))
 	}

-	proxyAgent := DefaultProxyAgent
-	if h.options.ProxyAgent != "" {
-		proxyAgent = h.options.ProxyAgent
-	}
-	w.Header().Set("Proxy-Agent", proxyAgent)
+	w.Header().Set("Proxy-Agent", "gost/"+Version)

 	if !Can("tcp", host, h.options.Whitelist, h.options.Blacklist) {
 		log.Logf("[http2] %s - %s : Unauthorized to tcp connect to %s",
@ -388,7 +385,7 @@ func (h *http2Handler) roundTrip(w http.ResponseWriter, r *http.Request) {
 		ProtoMajor: 2,
 		ProtoMinor: 0,
 		Header:     http.Header{},
-		Body:       io.NopCloser(bytes.NewReader([]byte{})),
+		Body:       ioutil.NopCloser(bytes.NewReader([]byte{})),
 	}

 	if !h.authenticate(w, r, resp) {
@ -538,7 +535,7 @@ func (h *http2Handler) authenticate(w http.ResponseWriter, r *http.Request, resp
 	} else {
 		resp.Header = http.Header{}
 		resp.Header.Set("Server", "nginx/1.14.1")
-		resp.Header.Set("Date", time.Now().UTC().Format(http.TimeFormat))
+		resp.Header.Set("Date", time.Now().Format(http.TimeFormat))
 		if resp.ContentLength > 0 {
 			resp.Header.Set("Content-Type", "text/html")
 		}
--- a/http2_test.go
+++ b/http2_test.go
@ -5,7 +5,7 @@ import (
 	"crypto/rand"
 	"crypto/tls"
 	"fmt"
-	"io"
+	"io/ioutil"
 	"net"
 	"net/http"
 	"net/http/httptest"
@ -997,7 +997,7 @@ func TestHTTP2ProxyWithWebProbeResist(t *testing.T) {
 	if err != nil {
 		t.Error(err)
 	}
-	recv, _ := io.ReadAll(conn)
+	recv, _ := ioutil.ReadAll(conn)
 	if !bytes.Equal(recv, []byte("Hello World!")) {
 		t.Error("data not equal")
 	}
@ -1053,7 +1053,7 @@ func TestHTTP2ProxyWithHostProbeResist(t *testing.T) {
 		Proto:         "HTTP/2.0",
 		ProtoMajor:    2,
 		ProtoMinor:    0,
-		Body:          io.NopCloser(bytes.NewReader(sendData)),
+		Body:          ioutil.NopCloser(bytes.NewReader(sendData)),
 		Host:          "github.com:443",
 		ContentLength: int64(len(sendData)),
 	}
@ -1068,7 +1068,7 @@ func TestHTTP2ProxyWithHostProbeResist(t *testing.T) {
 		t.Error("got non-200 status:", resp.Status)
 	}

-	recv, _ := io.ReadAll(resp.Body)
+	recv, _ := ioutil.ReadAll(resp.Body)
 	if !bytes.Equal(sendData, recv) {
 		t.Error("data not equal")
 	}
@ -1105,7 +1105,7 @@ func TestHTTP2ProxyWithFileProbeResist(t *testing.T) {
 	if err != nil {
 		t.Error(err)
 	}
-	recv, _ := io.ReadAll(conn)
+	recv, _ := ioutil.ReadAll(conn)
 	if !bytes.Equal(recv, []byte("Hello World!")) {
 		t.Error("data not equal")
 	}
--- a/http_test.go
+++ b/http_test.go
@ -4,7 +4,7 @@ import (
 	"bytes"
 	"crypto/rand"
 	"fmt"
-	"io"
+	"io/ioutil"
 	"net"
 	"net/http"
 	"net/http/httptest"
@ -249,7 +249,7 @@ func TestHTTPProxyWithWebProbeResist(t *testing.T) {
 		t.Error("got status:", resp.Status)
 	}

-	recv, _ := io.ReadAll(resp.Body)
+	recv, _ := ioutil.ReadAll(resp.Body)
 	if !bytes.Equal(recv, []byte("Hello World!")) {
 		t.Error("data not equal")
 	}
@ -296,7 +296,7 @@ func TestHTTPProxyWithHostProbeResist(t *testing.T) {
 		t.Error("got status:", resp.Status)
 	}

-	recv, _ := io.ReadAll(resp.Body)
+	recv, _ := ioutil.ReadAll(resp.Body)
 	if !bytes.Equal(sendData, recv) {
 		t.Error("data not equal")
 	}
@ -332,7 +332,7 @@ func TestHTTPProxyWithFileProbeResist(t *testing.T) {
 		t.Error("got status:", resp.Status)
 	}

-	recv, _ := io.ReadAll(resp.Body)
+	recv, _ := ioutil.ReadAll(resp.Body)
 	if !bytes.Equal(recv, []byte("Hello World!")) {
 		t.Error("data not equal, got:", string(recv))
 	}
--- a/kcp.go
+++ b/kcp.go
@ -15,9 +15,9 @@ import (

 	"github.com/go-log/log"
 	"github.com/klauspost/compress/snappy"
-	"github.com/xtaci/kcp-go/v5"
-	"github.com/xtaci/smux"
 	"github.com/xtaci/tcpraw"
+	"gopkg.in/xtaci/kcp-go.v4"
+	"gopkg.in/xtaci/smux.v1"
 )

 var (
@ -43,9 +43,6 @@ type KCPConfig struct {
 	Resend       int    `json:"resend"`
 	NoCongestion int    `json:"nc"`
 	SockBuf      int    `json:"sockbuf"`
-	SmuxBuf      int    `json:"smuxbuf"`
-	StreamBuf    int    `json:"streambuf"`
-	SmuxVer      int    `json:"smuxver"`
 	KeepAlive    int    `json:"keepalive"`
 	SnmpLog      string `json:"snmplog"`
 	SnmpPeriod   int    `json:"snmpperiod"`
@ -65,16 +62,6 @@ func (c *KCPConfig) Init() {
 	case "fast3":
 		c.NoDelay, c.Interval, c.Resend, c.NoCongestion = 1, 10, 2, 1
 	}
-	if c.SmuxVer <= 0 {
-		c.SmuxVer = 1
-	}
-	if c.SmuxBuf <= 0 {
-		c.SmuxBuf = c.SockBuf
-	}
-	if c.StreamBuf <= 0 {
-		c.StreamBuf = c.SockBuf / 2
-	}
-	log.Logf("%#v", c)
 }

 var (
@ -96,9 +83,6 @@ var (
 		Resend:       0,
 		NoCongestion: 0,
 		SockBuf:      4194304,
-		SmuxVer:      1,
-		SmuxBuf:      4194304,
-		StreamBuf:    2097152,
 		KeepAlive:    10,
 		SnmpLog:      "",
 		SnmpPeriod:   60,
@ -247,14 +231,8 @@ func (tr *kcpTransporter) initSession(addr string, conn net.Conn, config *KCPCon

 	// stream multiplex
 	smuxConfig := smux.DefaultConfig()
-	smuxConfig.Version = config.SmuxVer
-	smuxConfig.MaxReceiveBuffer = config.SmuxBuf
-	smuxConfig.MaxStreamBuffer = config.StreamBuf
+	smuxConfig.MaxReceiveBuffer = config.SockBuf
 	smuxConfig.KeepAliveInterval = time.Duration(config.KeepAlive) * time.Second
-	if err := smux.VerifyConfig(smuxConfig); err != nil {
-		return nil, err
-	}
-
 	var cc net.Conn = kcpconn
 	if !config.NoComp {
 		cc = newCompStreamConn(kcpconn)
@ -354,9 +332,7 @@ func (l *kcpListener) listenLoop() {

 func (l *kcpListener) mux(conn net.Conn) {
 	smuxConfig := smux.DefaultConfig()
-	smuxConfig.Version = l.config.SmuxVer
-	smuxConfig.MaxReceiveBuffer = l.config.SmuxBuf
-	smuxConfig.MaxStreamBuffer = l.config.StreamBuf
+	smuxConfig.MaxReceiveBuffer = l.config.SockBuf
 	smuxConfig.KeepAliveInterval = time.Duration(l.config.KeepAlive) * time.Second

 	log.Logf("[kcp] %s - %s", conn.RemoteAddr(), l.Addr())
@ -497,13 +473,9 @@ func (c *compStreamConn) Read(b []byte) (n int, err error) {
 }

 func (c *compStreamConn) Write(b []byte) (n int, err error) {
-	if _, err = c.w.Write(b); err != nil {
-		return 0, err
-	}
-	if err = c.w.Flush(); err != nil {
-		return 0, err
-	}
-	return len(b), err
+	n, err = c.w.Write(b)
+	err = c.w.Flush()
+	return n, err
 }

 func (c *compStreamConn) Close() error {
--- a/mux.go
+++ b/mux.go
@ -3,7 +3,7 @@ package gost
 import (
 	"net"

-	smux "github.com/xtaci/smux"
+	smux "gopkg.in/xtaci/smux.v1"
 )

 type muxStreamConn struct {
--- a/node.go
+++ b/node.go
@ -90,7 +90,6 @@ func ParseNode(s string) (node Node, err error) {
 	case "ftcp": // fake TCP
 	case "dns":
 	case "redu", "redirectu": // UDP tproxy
-	case "vsock":
 	default:
 		node.Transport = "tcp"
 	}
--- a/obfs.go
+++ b/obfs.go
@ -20,9 +20,9 @@ import (
 	"github.com/go-log/log"

 	pt "git.torproject.org/pluggable-transports/goptlib.git"
-	dissector "github.com/go-gost/tls-dissector"
-	"gitlab.com/yawning/obfs4.git/transports/base"
-	"gitlab.com/yawning/obfs4.git/transports/obfs4"
+	"git.torproject.org/pluggable-transports/obfs4.git/transports/base"
+	"git.torproject.org/pluggable-transports/obfs4.git/transports/obfs4"
+	dissector "github.com/ginuerzh/tls-dissector"
 )

 const (
@ -313,31 +313,8 @@ var (
 		0x0601, 0x0602, 0x0603, 0x0501, 0x0502, 0x0503, 0x0401, 0x0402,
 		0x0403, 0x0301, 0x0302, 0x0303, 0x0201, 0x0202, 0x0203,
 	}
-
-	tlsRecordTypes   = []uint8{0x16, 0x14, 0x16, 0x17}
-	tlsVersionMinors = []uint8{0x01, 0x03, 0x03, 0x03}
-
-	ErrBadType         = errors.New("bad type")
-	ErrBadMajorVersion = errors.New("bad major version")
-	ErrBadMinorVersion = errors.New("bad minor version")
-	ErrMaxDataLen      = errors.New("bad tls data len")
 )

-const (
-	tlsRecordStateType = iota
-	tlsRecordStateVersion0
-	tlsRecordStateVersion1
-	tlsRecordStateLength0
-	tlsRecordStateLength1
-	tlsRecordStateData
-)
-
-type obfsTLSParser struct {
-	step   uint8
-	state  uint8
-	length uint16
-}
-
 type obfsTLSConn struct {
 	net.Conn
 	rbuf           bytes.Buffer
@ -345,96 +322,15 @@ type obfsTLSConn struct {
 	host           string
 	isServer       bool
 	handshaked     chan struct{}
-	parser         *obfsTLSParser
 	handshakeMutex sync.Mutex
 }

-func (r *obfsTLSParser) Parse(b []byte) (int, error) {
-	i := 0
-	last := 0
-	length := len(b)
-
-	for i < length {
-		ch := b[i]
-		switch r.state {
-		case tlsRecordStateType:
-			if tlsRecordTypes[r.step] != ch {
-				return 0, ErrBadType
-			}
-			r.state = tlsRecordStateVersion0
-			i++
-		case tlsRecordStateVersion0:
-			if ch != 0x03 {
-				return 0, ErrBadMajorVersion
-			}
-			r.state = tlsRecordStateVersion1
-			i++
-		case tlsRecordStateVersion1:
-			if ch != tlsVersionMinors[r.step] {
-				return 0, ErrBadMinorVersion
-			}
-			r.state = tlsRecordStateLength0
-			i++
-		case tlsRecordStateLength0:
-			r.length = uint16(ch) << 8
-			r.state = tlsRecordStateLength1
-			i++
-		case tlsRecordStateLength1:
-			r.length |= uint16(ch)
-			if r.step == 0 {
-				r.length = 91
-			} else if r.step == 1 {
-				r.length = 1
-			} else if r.length > maxTLSDataLen {
-				return 0, ErrMaxDataLen
-			}
-			if r.length > 0 {
-				r.state = tlsRecordStateData
-			} else {
-				r.state = tlsRecordStateType
-				r.step++
-			}
-			i++
-		case tlsRecordStateData:
-			left := uint16(length - i)
-			if left > r.length {
-				left = r.length
-			}
-			if r.step >= 2 {
-				skip := i - last
-				copy(b[last:], b[i:length])
-				length -= int(skip)
-				last += int(left)
-				i = last
-			} else {
-				i += int(left)
-			}
-			r.length -= left
-			if r.length == 0 {
-				if r.step < 3 {
-					r.step++
-				}
-				r.state = tlsRecordStateType
-			}
-		}
-	}
-
-	if last == 0 {
-		return 0, nil
-	} else if last < length {
-		length -= last
-	}
-
-	return length, nil
-}
-
 // ClientObfsTLSConn creates a connection for obfs-tls client.
 func ClientObfsTLSConn(conn net.Conn, host string) net.Conn {
 	return &obfsTLSConn{
 		Conn:       conn,
 		host:       host,
 		handshaked: make(chan struct{}),
-		parser:     &obfsTLSParser{},
 	}
 }

@ -520,6 +416,32 @@ func (c *obfsTLSConn) clientHandshake(payload []byte) error {
 	if _, err := record.WriteTo(c.Conn); err != nil {
 		return err
 	}
+
+	// server hello handshake message
+	if _, err := record.ReadFrom(c.Conn); err != nil {
+		return err
+	}
+	if record.Type != dissector.Handshake {
+		return dissector.ErrBadType
+	}
+
+	// change cipher spec message
+	if _, err := record.ReadFrom(c.Conn); err != nil {
+		return err
+	}
+	if record.Type != dissector.ChangeCipherSpec {
+		return dissector.ErrBadType
+	}
+
+	// encrypted handshake message
+	if _, err := record.ReadFrom(c.Conn); err != nil {
+		return err
+	}
+	if record.Type != dissector.Handshake {
+		return dissector.ErrBadType
+	}
+
+	_, err = c.rbuf.Write(record.Opaque)
 	return err
 }

@ -599,30 +521,19 @@ func (c *obfsTLSConn) Read(b []byte) (n int, err error) {
 			return
 		}
 	}
-
 	select {
 	case <-c.handshaked:
 	}

-	if c.isServer {
-		if c.rbuf.Len() > 0 {
-			return c.rbuf.Read(b)
-		}
-		record := &dissector.Record{}
-		if _, err = record.ReadFrom(c.Conn); err != nil {
-			return
-		}
-		n = copy(b, record.Opaque)
-		_, err = c.rbuf.Write(record.Opaque[n:])
-	} else {
-		n, err = c.Conn.Read(b)
-		if err != nil {
-			return
-		}
-		if n > 0 {
-			n, err = c.parser.Parse(b[:n])
-		}
+	if c.rbuf.Len() > 0 {
+		return c.rbuf.Read(b)
 	}
+	record := &dissector.Record{}
+	if _, err = record.ReadFrom(c.Conn); err != nil {
+		return
+	}
+	n = copy(b, record.Opaque)
+	_, err = c.rbuf.Write(record.Opaque[n:])
 	return
 }

@ -804,16 +715,6 @@ func Obfs4Listener(addr string) (Listener, error) {
 	return l, nil
 }

-// TempError satisfies the net.Error interface and presents itself
-// as temporary to make sure that it gets retried by the Accept loop
-// in server.go.
-type TempError struct {
-	error
-}
-
-func (e TempError) Timeout() bool   { return false }
-func (e TempError) Temporary() bool { return true }
-
 func (l *obfs4Listener) Accept() (net.Conn, error) {
 	conn, err := l.Listener.Accept()
 	if err != nil {
@ -822,7 +723,7 @@ func (l *obfs4Listener) Accept() (net.Conn, error) {
 	cc, err := obfs4ServerConn(l.addr, conn)
 	if err != nil {
 		conn.Close()
-		return nil, TempError{err}
+		return nil, err
 	}
 	return cc, nil
 }
--- a/quic.go
+++ b/quic.go
@ -1,7 +1,6 @@
 package gost

 import (
-	"context"
 	"crypto/aes"
 	"crypto/cipher"
 	"crypto/rand"
@ -13,15 +12,16 @@ import (
 	"time"

 	"github.com/go-log/log"
-	quic "github.com/quic-go/quic-go"
+	quic "github.com/lucas-clemente/quic-go"
 )

 type quicSession struct {
-	session quic.EarlyConnection
+	conn    net.Conn
+	session quic.Session
 }

 func (session *quicSession) GetConn() (*quicConn, error) {
-	stream, err := session.session.OpenStreamSync(context.Background())
+	stream, err := session.session.OpenStreamSync()
 	if err != nil {
 		return nil, err
 	}
@ -33,7 +33,7 @@ func (session *quicSession) GetConn() (*quicConn, error) {
 }

 func (session *quicSession) Close() error {
-	return session.session.CloseWithError(quic.ApplicationErrorCode(0), "closed")
+	return session.session.Close()
 }

 type quicTransporter struct {
@ -59,71 +59,100 @@ func (tr *quicTransporter) Dial(addr string, options ...DialOption) (conn net.Co
 		option(opts)
 	}

-	udpAddr, err := net.ResolveUDPAddr("udp", addr)
-	if err != nil {
-		return nil, err
-	}
-
 	tr.sessionMutex.Lock()
 	defer tr.sessionMutex.Unlock()

 	session, ok := tr.sessions[addr]
 	if !ok {
-		var pc net.PacketConn
-		pc, err = net.ListenUDP("udp", &net.UDPAddr{IP: net.IPv4zero, Port: 0})
+		var cc *net.UDPConn
+		cc, err = net.ListenUDP("udp", &net.UDPAddr{IP: net.IPv4zero, Port: 0})
 		if err != nil {
 			return
 		}
+		conn = cc

 		if tr.config != nil && tr.config.Key != nil {
-			pc = &quicCipherConn{PacketConn: pc, key: tr.config.Key}
+			conn = &quicCipherConn{UDPConn: cc, key: tr.config.Key}
 		}

-		session, err = tr.initSession(udpAddr, pc)
-		if err != nil {
-			pc.Close()
-			return nil, err
-		}
+		session = &quicSession{conn: conn}
 		tr.sessions[addr] = session
 	}
-
-	conn, err = session.GetConn()
-	if err != nil {
-		session.Close()
-		delete(tr.sessions, addr)
-		return nil, err
-	}
-	return conn, nil
+	return session.conn, nil
 }

 func (tr *quicTransporter) Handshake(conn net.Conn, options ...HandshakeOption) (net.Conn, error) {
-	return conn, nil
-}
-
-func (tr *quicTransporter) initSession(addr net.Addr, conn net.PacketConn) (*quicSession, error) {
+	opts := &HandshakeOptions{}
+	for _, option := range options {
+		option(opts)
+	}
 	config := tr.config
-	if config == nil {
-		config = &QUICConfig{}
+	if opts.QUICConfig != nil {
+		config = opts.QUICConfig
 	}
 	if config.TLSConfig == nil {
 		config.TLSConfig = &tls.Config{InsecureSkipVerify: true}
 	}

+	tr.sessionMutex.Lock()
+	defer tr.sessionMutex.Unlock()
+
+	timeout := opts.Timeout
+	if timeout <= 0 {
+		timeout = HandshakeTimeout
+	}
+	conn.SetDeadline(time.Now().Add(timeout))
+	defer conn.SetDeadline(time.Time{})
+
+	session, ok := tr.sessions[opts.Addr]
+	if session != nil && session.conn != conn {
+		conn.Close()
+		return nil, errors.New("quic: unrecognized connection")
+	}
+	if !ok || session.session == nil {
+		s, err := tr.initSession(opts.Addr, conn, config)
+		if err != nil {
+			conn.Close()
+			delete(tr.sessions, opts.Addr)
+			return nil, err
+		}
+		session = s
+		tr.sessions[opts.Addr] = session
+	}
+	cc, err := session.GetConn()
+	if err != nil {
+		session.Close()
+		delete(tr.sessions, opts.Addr)
+		return nil, err
+	}
+
+	return cc, nil
+}
+
+func (tr *quicTransporter) initSession(addr string, conn net.Conn, config *QUICConfig) (*quicSession, error) {
+	udpConn, ok := conn.(net.PacketConn)
+	if !ok {
+		return nil, errors.New("quic: wrong connection type")
+	}
+	udpAddr, err := net.ResolveUDPAddr("udp", addr)
+	if err != nil {
+		return nil, err
+	}
 	quicConfig := &quic.Config{
-		HandshakeIdleTimeout: config.Timeout,
-		MaxIdleTimeout:       config.IdleTimeout,
-		KeepAlivePeriod:      config.KeepAlivePeriod,
+		HandshakeTimeout: config.Timeout,
+		KeepAlive:        config.KeepAlive,
+		IdleTimeout:      config.IdleTimeout,
 		Versions: []quic.VersionNumber{
-			quic.Version1,
-			quic.Version2,
+			quic.VersionGQUIC43,
+			quic.VersionGQUIC39,
 		},
 	}
-	session, err := quic.DialEarly(context.Background(), conn, addr, tlsConfigQUICALPN(config.TLSConfig), quicConfig)
+	session, err := quic.Dial(udpConn, udpAddr, addr, config.TLSConfig, quicConfig)
 	if err != nil {
 		log.Logf("quic dial %s: %v", addr, err)
 		return nil, err
 	}
-	return &quicSession{session: session}, nil
+	return &quicSession{conn: conn, session: session}, nil
 }

 func (tr *quicTransporter) Multiplex() bool {
@ -132,16 +161,15 @@ func (tr *quicTransporter) Multiplex() bool {

 // QUICConfig is the config for QUIC client and server
 type QUICConfig struct {
-	TLSConfig       *tls.Config
-	Timeout         time.Duration
-	KeepAlive       bool
-	KeepAlivePeriod time.Duration
-	IdleTimeout     time.Duration
-	Key             []byte
+	TLSConfig   *tls.Config
+	Timeout     time.Duration
+	KeepAlive   bool
+	IdleTimeout time.Duration
+	Key         []byte
 }

 type quicListener struct {
-	ln       quic.EarlyListener
+	ln       quic.Listener
 	connChan chan net.Conn
 	errChan  chan error
 }
@ -152,41 +180,39 @@ func QUICListener(addr string, config *QUICConfig) (Listener, error) {
 		config = &QUICConfig{}
 	}
 	quicConfig := &quic.Config{
-		HandshakeIdleTimeout: config.Timeout,
-		KeepAlivePeriod:      config.KeepAlivePeriod,
-		MaxIdleTimeout:       config.IdleTimeout,
-		Versions: []quic.VersionNumber{
-			quic.Version1,
-			quic.Version2,
-		},
+		HandshakeTimeout: config.Timeout,
+		KeepAlive:        config.KeepAlive,
+		IdleTimeout:      config.IdleTimeout,
 	}

 	tlsConfig := config.TLSConfig
 	if tlsConfig == nil {
 		tlsConfig = DefaultTLSConfig
 	}
+
 	var conn net.PacketConn

 	udpAddr, err := net.ResolveUDPAddr("udp", addr)
 	if err != nil {
 		return nil, err
 	}
-	conn, err = net.ListenUDP("udp", udpAddr)
+	lconn, err := net.ListenUDP("udp", udpAddr)
 	if err != nil {
 		return nil, err
 	}
+	conn = lconn

 	if config.Key != nil {
-		conn = &quicCipherConn{PacketConn: conn, key: config.Key}
+		conn = &quicCipherConn{UDPConn: lconn, key: config.Key}
 	}

-	ln, err := quic.ListenEarly(conn, tlsConfigQUICALPN(tlsConfig), quicConfig)
+	ln, err := quic.Listen(conn, tlsConfig, quicConfig)
 	if err != nil {
 		return nil, err
 	}

 	l := &quicListener{
-		ln:       *ln,
+		ln:       ln,
 		connChan: make(chan net.Conn, 1024),
 		errChan:  make(chan error, 1),
 	}
@ -197,7 +223,7 @@ func QUICListener(addr string, config *QUICConfig) (Listener, error) {

 func (l *quicListener) listenLoop() {
 	for {
-		session, err := l.ln.Accept(context.Background())
+		session, err := l.ln.Accept()
 		if err != nil {
 			log.Log("[quic] accept:", err)
 			l.errChan <- err
@ -208,15 +234,15 @@ func (l *quicListener) listenLoop() {
 	}
 }

-func (l *quicListener) sessionLoop(session quic.Connection) {
+func (l *quicListener) sessionLoop(session quic.Session) {
 	log.Logf("[quic] %s <-> %s", session.RemoteAddr(), session.LocalAddr())
 	defer log.Logf("[quic] %s >-< %s", session.RemoteAddr(), session.LocalAddr())

 	for {
-		stream, err := session.AcceptStream(context.Background())
+		stream, err := session.AcceptStream()
 		if err != nil {
 			log.Log("[quic] accept stream:", err)
-			session.CloseWithError(quic.ApplicationErrorCode(0), "closed")
+			session.Close()
 			return
 		}

@ -265,12 +291,12 @@ func (c *quicConn) RemoteAddr() net.Addr {
 }

 type quicCipherConn struct {
-	net.PacketConn
+	*net.UDPConn
 	key []byte
 }

 func (conn *quicCipherConn) ReadFrom(data []byte) (n int, addr net.Addr, err error) {
-	n, addr, err = conn.PacketConn.ReadFrom(data)
+	n, addr, err = conn.UDPConn.ReadFrom(data)
 	if err != nil {
 		return
 	}
@ -290,7 +316,7 @@ func (conn *quicCipherConn) WriteTo(data []byte, addr net.Addr) (n int, err erro
 		return
 	}

-	_, err = conn.PacketConn.WriteTo(b, addr)
+	_, err = conn.UDPConn.WriteTo(b, addr)
 	if err != nil {
 		return
 	}
@ -336,12 +362,3 @@ func (conn *quicCipherConn) decrypt(data []byte) ([]byte, error) {
 	nonce, ciphertext := data[:nonceSize], data[nonceSize:]
 	return gcm.Open(nil, nonce, ciphertext, nil)
 }
-
-func tlsConfigQUICALPN(tlsConfig *tls.Config) *tls.Config {
-	if tlsConfig == nil {
-		panic("quic: tlsconfig is nil")
-	}
-	tlsConfigQUIC := tlsConfig.Clone()
-	tlsConfigQUIC.NextProtos = []string{"http/3", "quic/v1"}
-	return tlsConfigQUIC
-}
--- a/redirect.go
+++ b/redirect.go
@ -1,4 +1,3 @@
-//go:build linux
 // +build linux

 package gost
--- a/redirect_other.go
+++ b/redirect_other.go
@ -1,4 +1,3 @@
-//go:build !linux
 // +build !linux

 package gost
@ -36,7 +35,8 @@ func (h *tcpRedirectHandler) Handle(c net.Conn) {
 	c.Close()
 }

-type udpRedirectHandler struct{}
+type udpRedirectHandler struct {
+}

 // UDPRedirectHandler creates a server Handler for UDP transparent server.
 func UDPRedirectHandler(opts ...HandlerOption) Handler {
--- a/relay.go
+++ b/relay.go
@ -84,7 +84,7 @@ func (c *relayConnector) ConnectContext(ctx context.Context, conn net.Conn, netw
 				atype = relay.AddrIPv4
 			}

-			req.Features = append(req.Features, &relay.AddrFeature{
+			req.Features = append(req.Features, &relay.TargetAddrFeature{
 				AType: atype,
 				Host:  host,
 				Port:  uint16(nport),
@ -155,8 +155,8 @@ func (h *relayHandler) Handle(conn net.Conn) {
 			feature := f.(*relay.UserAuthFeature)
 			user, pass = feature.Username, feature.Password
 		}
-		if f.Type() == relay.FeatureAddr {
-			feature := f.(*relay.AddrFeature)
+		if f.Type() == relay.FeatureTargetAddr {
+			feature := f.(*relay.TargetAddrFeature)
 			raddr = net.JoinHostPort(feature.Host, strconv.Itoa(int(feature.Port)))
 		}
 	}
@ -203,13 +203,6 @@ func (h *relayHandler) Handle(conn net.Conn) {
 	if udp {
 		network = "udp"
 	}
-	if !Can(network, raddr, h.options.Whitelist, h.options.Blacklist) {
-		resp.Status = relay.StatusForbidden
-		resp.WriteTo(conn)
-		log.Logf("[relay] %s -> %s : relay to %s is forbidden",
-			conn.RemoteAddr(), conn.LocalAddr(), raddr)
-		return
-	}

 	ctx := context.TODO()
 	var cc net.Conn
@ -264,11 +257,10 @@ func (h *relayHandler) Handle(conn net.Conn) {

 type relayConn struct {
 	net.Conn
-	isServer   bool
-	udp        bool
-	wbuf       bytes.Buffer
-	once       sync.Once
-	headerSent bool
+	isServer bool
+	udp      bool
+	wbuf     bytes.Buffer
+	once     sync.Once
 }

 func (c *relayConn) Read(b []byte) (n int, err error) {
@ -331,7 +323,6 @@ func (c *relayConn) Write(b []byte) (n int, err error) {
 			var bb [2]byte
 			binary.BigEndian.PutUint16(bb[:2], uint16(len(b)))
 			c.wbuf.Write(bb[:])
-			c.headerSent = true
 		}
 		c.wbuf.Write(b) // append the data to the cached header
 		// _, err = c.Conn.Write(c.wbuf.Bytes())
@ -343,13 +334,7 @@ func (c *relayConn) Write(b []byte) (n int, err error) {
 	if !c.udp {
 		return c.Conn.Write(b)
 	}
-	if !c.headerSent {
-		c.headerSent = true
-		b2 := make([]byte, len(b)+2)
-		copy(b2, b)
-		_, err = c.Conn.Write(b2)
-		return
-	}
+
 	nsize := 2 + len(b)
 	var buf []byte
 	if nsize <= mediumBufferSize {
--- a/resolver.go
+++ b/resolver.go
@ -8,6 +8,7 @@ import (
 	"errors"
 	"fmt"
 	"io"
+	"io/ioutil"
 	"net"
 	"net/http"
 	"net/url"
@ -262,7 +263,9 @@ func (r *resolver) copyServers() []NameServer {
 	defer r.mux.RUnlock()

 	servers := make([]NameServer, len(r.servers))
-	copy(servers, r.servers)
+	for i := range r.servers {
+		servers[i] = r.servers[i]
+	}

 	return servers
 }
@ -309,28 +312,17 @@ func (r *resolver) resolve(ctx context.Context, ex Exchanger, host string) (ips
 	r.mux.RUnlock()

 	if prefer == "ipv6" { // prefer ipv6
-		if ips, err = r.resolve6(ctx, ex, host); len(ips) > 0 {
+		mq := &dns.Msg{}
+		mq.SetQuestion(dns.Fqdn(host), dns.TypeAAAA)
+		ips, err = r.resolveIPs(ctx, ex, mq)
+		if err != nil || len(ips) > 0 {
 			return
 		}
-		return r.resolve4(ctx, ex, host)
 	}

-	if ips, err = r.resolve4(ctx, ex, host); len(ips) > 0 {
-		return
-	}
-	return r.resolve6(ctx, ex, host)
-}
-
-func (r *resolver) resolve4(ctx context.Context, ex Exchanger, host string) (ips []net.IP, err error) {
-	mq := dns.Msg{}
+	mq := &dns.Msg{}
 	mq.SetQuestion(dns.Fqdn(host), dns.TypeA)
-	return r.resolveIPs(ctx, ex, &mq)
-}
-
-func (r *resolver) resolve6(ctx context.Context, ex Exchanger, host string) (ips []net.IP, err error) {
-	mq := dns.Msg{}
-	mq.SetQuestion(dns.Fqdn(host), dns.TypeAAAA)
-	return r.resolveIPs(ctx, ex, &mq)
+	return r.resolveIPs(ctx, ex, mq)
 }

 func (r *resolver) resolveIPs(ctx context.Context, ex Exchanger, mq *dns.Msg) (ips []net.IP, err error) {
@ -717,8 +709,7 @@ func (ex *dnsExchanger) Exchange(ctx context.Context, query []byte) ([]byte, err
 	defer c.Close()

 	conn := &dns.Conn{
-		Conn:    c,
-		UDPSize: 1024,
+		Conn: c,
 	}
 	if _, err = conn.Write(query); err != nil {
 		return nil, err
@ -914,7 +905,7 @@ func (ex *dohExchanger) Exchange(ctx context.Context, query []byte) ([]byte, err
 	}

 	// Read wireformat response from the body
-	buf, err := io.ReadAll(resp.Body)
+	buf, err := ioutil.ReadAll(resp.Body)
 	if err != nil {
 		return nil, fmt.Errorf("failed to read the response body: %s", err)
 	}
--- a/selector.go
+++ b/selector.go
@ -4,18 +4,15 @@ import (
 	"errors"
 	"math/rand"
 	"net"
-	"sort"
 	"strconv"
 	"sync"
 	"sync/atomic"
 	"time"
-
-	"github.com/go-log/log"
 )

 var (
 	// ErrNoneAvailable indicates there is no node available.
-	ErrNoneAvailable = errors.New("none node available")
+	ErrNoneAvailable = errors.New("none available")
 )

 // NodeSelector as a mechanism to pick nodes and mark their status.
@ -208,94 +205,6 @@ func (f *FailFilter) String() string {
 	return "fail"
 }

-// FastestFilter filter the fastest node
-type FastestFilter struct {
-	mu sync.Mutex
-
-	pinger        *net.Dialer
-	pingResult    map[int]int
-	pingResultTTL map[int]int64
-
-	topCount int
-}
-
-func NewFastestFilter(pingTimeOut int, topCount int) *FastestFilter {
-	if pingTimeOut == 0 {
-		pingTimeOut = 3000 // 3s
-	}
-	return &FastestFilter{
-		mu:            sync.Mutex{},
-		pinger:        &net.Dialer{Timeout: time.Millisecond * time.Duration(pingTimeOut)},
-		pingResult:    make(map[int]int, 0),
-		pingResultTTL: make(map[int]int64, 0),
-		topCount:      topCount,
-	}
-}
-
-func (f *FastestFilter) Filter(nodes []Node) []Node {
-	// disabled
-	if f.topCount == 0 {
-		return nodes
-	}
-
-	// get latency with ttl cache
-	now := time.Now().Unix()
-
-	var getNodeLatency = func(node Node) int {
-		f.mu.Lock()
-		defer f.mu.Unlock()
-
-		if f.pingResultTTL[node.ID] < now {
-			f.pingResultTTL[node.ID] = now + 5 // tmp
-
-			// get latency
-			go func(node Node) {
-				latency := f.doTcpPing(node.Addr)
-				r := rand.New(rand.NewSource(time.Now().UnixNano()))
-				ttl := 300 - int64(120*r.Float64())
-
-				f.mu.Lock()
-				defer f.mu.Unlock()
-
-				f.pingResult[node.ID] = latency
-				f.pingResultTTL[node.ID] = now + ttl
-			}(node)
-		}
-		return f.pingResult[node.ID]
-	}
-
-	// sort
-	sort.Slice(nodes, func(i, j int) bool {
-		return getNodeLatency(nodes[i]) < getNodeLatency(nodes[j])
-	})
-
-	// split
-	if len(nodes) <= f.topCount {
-		return nodes
-	}
-
-	return nodes[0:f.topCount]
-}
-
-func (f *FastestFilter) String() string {
-	return "fastest"
-}
-
-// doTcpPing
-func (f *FastestFilter) doTcpPing(address string) int {
-	start := time.Now()
-	conn, err := f.pinger.Dial("tcp", address)
-	elapsed := time.Since(start)
-
-	if err == nil {
-		_ = conn.Close()
-	}
-
-	latency := int(elapsed.Milliseconds())
-	log.Logf("pingDoTCP: %s, latency: %d", address, latency)
-	return latency
-}
-
 // InvalidFilter filters the invalid node.
 // A node is invalid if its port is invalid (negative or zero value).
 type InvalidFilter struct{}
--- a/selector_test.go
+++ b/selector_test.go
@ -127,30 +127,6 @@ func TestFailFilter(t *testing.T) {
 	}
 }

-func TestFastestFilter(t *testing.T) {
-	nodes := []Node{
-		Node{ID: 1, marker: &failMarker{}, Addr: "1.0.0.1:80"},
-		Node{ID: 2, marker: &failMarker{}, Addr: "1.0.0.2:80"},
-		Node{ID: 3, marker: &failMarker{}, Addr: "1.0.0.3:80"},
-	}
-	filter := NewFastestFilter(0, 2)
-
-	var print = func(nodes []Node) []string {
-		var rows []string
-		for _, node := range nodes {
-			rows = append(rows, node.Addr)
-		}
-		return rows
-	}
-
-	result1 := filter.Filter(nodes)
-	t.Logf("result 1: %+v", print(result1))
-
-	time.Sleep(time.Second)
-	result2 := filter.Filter(nodes)
-	t.Logf("result 2: %+v", print(result2))
-}
-
 func TestSelector(t *testing.T) {
 	nodes := []Node{
 		Node{ID: 1, marker: &failMarker{}},
--- a/server.go
+++ b/server.go
@ -112,11 +112,11 @@ func transport(rw1, rw2 io.ReadWriter) error {
 		errc <- copyBuffer(rw2, rw1)
 	}()

-	if err := <-errc; err != nil && err != io.EOF {
-		return err
+	err := <-errc
+	if err != nil && err == io.EOF {
+		err = nil
 	}
-
-	return nil
+	return err
 }

 func copyBuffer(dst io.Writer, src io.Reader) error {
--- a/signal.go
+++ b/signal.go
@ -1,4 +1,3 @@
-//go:build windows
 // +build windows

 package gost
--- a/signal_unix.go
+++ b/signal_unix.go
@ -1,4 +1,3 @@
-//go:build !windows
 // +build !windows

 package gost
@ -9,7 +8,7 @@ import (
 	"syscall"

 	"github.com/go-log/log"
-	"github.com/xtaci/kcp-go/v5"
+	"gopkg.in/xtaci/kcp-go.v4"
 )

 func kcpSigHandler() {
--- a/snap/snapcraft.yaml
+++ b/snap/snapcraft.yaml
@ -1,34 +0,0 @@
-name: gost
-base: core20
-version: '2.12.0'
-summary: A simple security tunnel written in golang
-description: |
-  Project: https://github.com/ginuerzh/gost
-  Wiki: https://v2.gost.run
-icon: gost.png
-website: https://v2.gost.run
-license: MIT
-
-
-confinement: strict
-grade: stable
-
-parts:
-  gost:
-    plugin: go
-    go-channel: latest/stable
-    source: https://github.com/ginuerzh/gost
-    source-subdir: cmd/gost
-    source-type: git
-    source-tag: v2.12.0
-    build-packages:
-    - gcc
-
-apps:
-  gost:
-    command: bin/gost
-    plugs: 
-    - home
-    - network
-    - network-bind
-
--- a/snapcraft.yaml
+++ b/snapcraft.yaml
@ -0,0 +1,43 @@
+name: gost
+type: app
+version: '2.11.0'
+title: GO Simple Tunnel
+summary: A simple security tunnel written in golang
+description: |
+  https://github.com/ginuerzh/gost
+confinement: strict
+grade: stable
+base: core18
+license: MIT
+parts:
+  gost:
+    plugin: nil
+    build-snaps: [go/1.13/stable]
+    source: https://github.com/ginuerzh/gost.git
+    source-subdir: cmd/gost
+    source-type: git
+    source-branch: '2'
+    build-packages:
+      - build-essential
+    override-build: |
+      set -ex
+
+      echo "Starting override-build:"
+      pwd
+      cd $SNAPCRAFT_PART_BUILD
+      GO111MODULE=on CGO_ENABLED=0 go build --ldflags="-s -w"
+      ./gost -V
+
+      echo "Installing to ${SNAPCRAFT_PART_INSTALL}..."
+      install -d $SNAPCRAFT_PART_INSTALL/bin
+      cp -v gost $SNAPCRAFT_PART_INSTALL/bin/
+
+      echo "Override-build done!"
+apps:
+  gost:
+    command: bin/gost
+    plugs: 
+    - home
+    - network
+    - network-bind
+
--- a/sni.go
+++ b/sni.go
@ -17,8 +17,7 @@ import (
 	"strings"
 	"sync"

-	"github.com/asaskevich/govalidator"
-	dissector "github.com/go-gost/tls-dissector"
+	dissector "github.com/ginuerzh/tls-dissector"
 	"github.com/go-log/log"
 )

@ -87,10 +86,6 @@ func (h *sniHandler) Handle(conn net.Conn) {
 			return
 		}

-		if !req.URL.IsAbs() && govalidator.IsDNSName(req.Host) {
-			req.URL.Scheme = "http"
-		}
-
 		handler := &httpHandler{options: h.options}
 		handler.Init()
 		handler.handleRequest(conn, req)
--- a/sni_test.go
+++ b/sni_test.go
@ -7,7 +7,7 @@ import (
 	"crypto/tls"
 	"errors"
 	"fmt"
-	"io"
+	"io/ioutil"
 	"net/http"
 	"net/http/httptest"
 	"net/url"
@ -69,7 +69,7 @@ func sniRoundtrip(client *Client, server *Server, targetURL string, data []byte)
 		return errors.New(resp.Status)
 	}

-	recv, err := io.ReadAll(resp.Body)
+	recv, err := ioutil.ReadAll(resp.Body)
 	if err != nil {
 		return
 	}
--- a/sockopts_linux.go
+++ b/sockopts_linux.go
@ -1,11 +0,0 @@
-package gost
-
-import "syscall"
-
-func setSocketMark(fd int, value int) (e error) {
-	return syscall.SetsockoptInt(fd, syscall.SOL_SOCKET, syscall.SO_MARK, value)
-}
-
-func setSocketInterface(fd int, value string) (e error) {
-	return syscall.SetsockoptString(fd, syscall.SOL_SOCKET, syscall.SO_BINDTODEVICE, value)
-}
--- a/sockopts_other.go
+++ b/sockopts_other.go
@ -1,12 +0,0 @@
-//go:build !linux
-// +build !linux
-
-package gost
-
-func setSocketMark(fd int, value int) (e error) {
-	return nil
-}
-
-func setSocketInterface(fd int, value string) (e error) {
-	return nil
-}
--- a/socks.go
+++ b/socks.go
@ -10,14 +10,13 @@ import (
 	"net"
 	"net/url"
 	"strconv"
-	"strings"
 	"sync"
 	"time"

-	"github.com/go-gost/gosocks4"
-	"github.com/go-gost/gosocks5"
+	"github.com/ginuerzh/gosocks4"
+	"github.com/ginuerzh/gosocks5"
 	"github.com/go-log/log"
-	smux "github.com/xtaci/smux"
+	smux "gopkg.in/xtaci/smux.v1"
 )

 const (
@ -1125,7 +1124,7 @@ func (h *socks5Handler) handleUDPRelay(conn net.Conn, req *gosocks5.Request) {
 		return
 	}

-	relay, err := net.ListenUDP("udp", &net.UDPAddr{IP: conn.LocalAddr().(*net.TCPAddr).IP, Port: 0}) // use out-going interface's IP
+	relay, err := net.ListenUDP("udp", nil)
 	if err != nil {
 		log.Logf("[socks5-udp] %s -> %s : %s", conn.RemoteAddr(), conn.LocalAddr(), err)
 		reply := gosocks5.NewReply(gosocks5.Failure, nil)
@ -1138,6 +1137,7 @@ func (h *socks5Handler) handleUDPRelay(conn net.Conn, req *gosocks5.Request) {
 	defer relay.Close()

 	socksAddr := toSocksAddr(relay.LocalAddr())
+	socksAddr.Host, _, _ = net.SplitHostPort(conn.LocalAddr().String()) // replace the IP to the out-going interface's
 	reply := gosocks5.NewReply(gosocks5.Succeeded, socksAddr)
 	if err := reply.Write(conn); err != nil {
 		log.Logf("[socks5-udp] %s <- %s : %s", conn.RemoteAddr(), conn.LocalAddr(), err)
@ -1630,21 +1630,17 @@ func (h *socks5Handler) muxBindOn(conn net.Conn, addr string) {
 	}
 }

-// TODO: support domain
+// TODO: support ipv6 and domain
 func toSocksAddr(addr net.Addr) *gosocks5.Addr {
 	host := "0.0.0.0"
 	port := 0
-	addrType := gosocks5.AddrIPv4
 	if addr != nil {
 		h, p, _ := net.SplitHostPort(addr.String())
 		host = h
 		port, _ = strconv.Atoi(p)
-		if strings.Count(host, ":") > 0 {
-			addrType = gosocks5.AddrIPv6
-		}
 	}
 	return &gosocks5.Addr{
-		Type: addrType,
+		Type: gosocks5.AddrIPv4,
 		Host: host,
 		Port: uint16(port),
 	}
--- a/ss.go
+++ b/ss.go
@ -10,7 +10,7 @@ import (
 	"net/url"
 	"time"

-	"github.com/go-gost/gosocks5"
+	"github.com/ginuerzh/gosocks5"
 	"github.com/go-log/log"
 	"github.com/shadowsocks/go-shadowsocks2/core"
 	ss "github.com/shadowsocks/shadowsocks-go/shadowsocks"
@ -580,7 +580,7 @@ func (c *shadowCipher) StreamConn(conn net.Conn) net.Conn {
 }

 func (c *shadowCipher) PacketConn(conn net.PacketConn) net.PacketConn {
-	return ss.NewSecurePacketConn(conn, c.cipher.Copy())
+	return ss.NewSecurePacketConn(conn, c.cipher.Copy(), false)
 }

 func initShadowCipher(info *url.Userinfo) (cipher core.Cipher) {
--- a/ssh.go
+++ b/ssh.go
@ -6,8 +6,8 @@ import (
 	"encoding/binary"
 	"errors"
 	"fmt"
+	"io/ioutil"
 	"net"
-	"os"
 	"strconv"
 	"strings"
 	"sync"
@ -27,20 +27,20 @@ const (
 	GostSSHTunnelRequest = "gost-tunnel" // extended request type for ssh tunnel
 )

-var errSessionDead = errors.New("session is dead")
+var (
+	errSessionDead = errors.New("session is dead")
+)

-// ParseSSHKeyFile parses ssh key file.
 func ParseSSHKeyFile(fp string) (ssh.Signer, error) {
-	key, err := os.ReadFile(fp)
+	key, err := ioutil.ReadFile(fp)
 	if err != nil {
 		return nil, err
 	}
 	return ssh.ParsePrivateKey(key)
 }

-// ParseSSHAuthorizedKeysFile parses ssh Authorized Keys file.
 func ParseSSHAuthorizedKeysFile(fp string) (map[string]bool, error) {
-	authorizedKeysBytes, err := os.ReadFile(fp)
+	authorizedKeysBytes, err := ioutil.ReadFile(fp)
 	if err != nil {
 		return nil, err
 	}
@ -57,7 +57,8 @@ func ParseSSHAuthorizedKeysFile(fp string) (map[string]bool, error) {
 	return authorizedKeysMap, nil
 }

-type sshDirectForwardConnector struct{}
+type sshDirectForwardConnector struct {
+}

 // SSHDirectForwardConnector creates a Connector for SSH TCP direct port forwarding.
 func SSHDirectForwardConnector() Connector {
@ -100,7 +101,8 @@ func (c *sshDirectForwardConnector) ConnectContext(ctx context.Context, conn net
 	return conn, nil
 }

-type sshRemoteForwardConnector struct{}
+type sshRemoteForwardConnector struct {
+}

 // SSHRemoteForwardConnector creates a Connector for SSH TCP remote port forwarding.
 func SSHRemoteForwardConnector() Connector {
@ -646,7 +648,7 @@ func (h *sshForwardHandler) tcpipForwardRequest(sshConn ssh.Conn, req *ssh.Reque
 		return
 	}

-	ln, err := net.Listen("tcp", addr) // tie to the client connection
+	ln, err := net.Listen("tcp", addr) //tie to the client connection
 	if err != nil {
 		log.Log("[ssh-rtcp]", err)
 		req.Reply(false, nil)
--- a/tls.go
+++ b/tls.go
@ -2,6 +2,7 @@ package gost

 import (
 	"crypto/tls"
+	"crypto/x509"
 	"errors"
 	"net"
 	"sync"
@ -9,7 +10,7 @@ import (

 	"github.com/go-log/log"

-	smux "github.com/xtaci/smux"
+	smux "gopkg.in/xtaci/smux.v1"
 )

 type tlsTransporter struct {
@ -289,40 +290,36 @@ func wrapTLSClient(conn net.Conn, tlsConfig *tls.Config, timeout time.Duration)
 		return nil, err
 	}

-	// We can do this in `tls.Config.VerifyConnection`, which effective for
-	// other TLS protocols such as WebSocket. See `route.go:parseChainNode`
-	/*
-		// If crypto/tls is doing verification, there's no need to do our own.
-		if tlsConfig.InsecureSkipVerify == false {
-			return tlsConn, nil
-		}
+	// If crypto/tls is doing verification, there's no need to do our own.
+	if tlsConfig.InsecureSkipVerify == false {
+		return tlsConn, nil
+	}

-		// Similarly if we use host's CA, we can do full handshake
-		if tlsConfig.RootCAs == nil {
-			return tlsConn, nil
-		}
+	// Similarly if we use host's CA, we can do full handshake
+	if tlsConfig.RootCAs == nil {
+		return tlsConn, nil
+	}

-		opts := x509.VerifyOptions{
-			Roots:         tlsConfig.RootCAs,
-			CurrentTime:   time.Now(),
-			DNSName:       "",
-			Intermediates: x509.NewCertPool(),
-		}
+	opts := x509.VerifyOptions{
+		Roots:         tlsConfig.RootCAs,
+		CurrentTime:   time.Now(),
+		DNSName:       "",
+		Intermediates: x509.NewCertPool(),
+	}

-		certs := tlsConn.ConnectionState().PeerCertificates
-		for i, cert := range certs {
-			if i == 0 {
-				continue
-			}
-			opts.Intermediates.AddCert(cert)
+	certs := tlsConn.ConnectionState().PeerCertificates
+	for i, cert := range certs {
+		if i == 0 {
+			continue
 		}
+		opts.Intermediates.AddCert(cert)
+	}

-		_, err = certs[0].Verify(opts)
-		if err != nil {
-			tlsConn.Close()
-			return nil, err
-		}
-	*/
+	_, err = certs[0].Verify(opts)
+	if err != nil {
+		tlsConn.Close()
+		return nil, err
+	}

 	return tlsConn, err
 }
--- a/tuntap.go
+++ b/tuntap.go
@ -13,6 +13,7 @@ import (
 	"github.com/go-log/log"
 	"github.com/shadowsocks/go-shadowsocks2/core"
 	"github.com/shadowsocks/go-shadowsocks2/shadowaead"
+	"github.com/shadowsocks/go-shadowsocks2/shadowstream"
 	"github.com/songgao/water"
 	"github.com/songgao/water/waterutil"
 	"github.com/xtaci/tcpraw"
@ -339,7 +340,7 @@ func (h *tunHandler) transportTun(tun net.Conn, conn net.PacketConn, raddr net.A

 				n, addr, err := conn.ReadFrom(b)
 				if err != nil &&
-					err != shadowaead.ErrShortPacket {
+					err != shadowaead.ErrShortPacket && err != shadowstream.ErrShortPacket {
 					return err
 				}

@ -701,7 +702,7 @@ func (h *tapHandler) transportTap(tap net.Conn, conn net.PacketConn, raddr net.A

 				n, addr, err := conn.ReadFrom(b)
 				if err != nil &&
-					err != shadowaead.ErrShortPacket {
+					err != shadowaead.ErrShortPacket && err != shadowstream.ErrShortPacket {
 					return err
 				}

--- a/tuntap_linux.go
+++ b/tuntap_linux.go
@ -3,15 +3,15 @@ package gost
 import (
 	"fmt"
 	"net"
-	"os/exec"
-	"strings"

+	"github.com/docker/libcontainer/netlink"
 	"github.com/go-log/log"
+	"github.com/milosgajdos83/tenus"
 	"github.com/songgao/water"
 )

 func createTun(cfg TunConfig) (conn net.Conn, itf *net.Interface, err error) {
-	ip, _, err := net.ParseCIDR(cfg.Addr)
+	ip, ipNet, err := net.ParseCIDR(cfg.Addr)
 	if err != nil {
 		return
 	}
@ -26,21 +26,35 @@ func createTun(cfg TunConfig) (conn net.Conn, itf *net.Interface, err error) {
 		return
 	}

+	link, err := tenus.NewLinkFrom(ifce.Name())
+	if err != nil {
+		return
+	}
+
 	mtu := cfg.MTU
 	if mtu <= 0 {
 		mtu = DefaultMTU
 	}

-	if err = exeCmd(fmt.Sprintf("ip link set dev %s mtu %d", ifce.Name(), mtu)); err != nil {
-		log.Log(err)
+	cmd := fmt.Sprintf("ip link set dev %s mtu %d", ifce.Name(), mtu)
+	log.Log("[tun]", cmd)
+	if er := link.SetLinkMTU(mtu); er != nil {
+		err = fmt.Errorf("%s: %v", cmd, er)
+		return
 	}

-	if err = exeCmd(fmt.Sprintf("ip address add %s dev %s", cfg.Addr, ifce.Name())); err != nil {
-		log.Log(err)
+	cmd = fmt.Sprintf("ip address add %s dev %s", cfg.Addr, ifce.Name())
+	log.Log("[tun]", cmd)
+	if er := link.SetLinkIp(ip, ipNet); er != nil {
+		err = fmt.Errorf("%s: %v", cmd, er)
+		return
 	}

-	if err = exeCmd(fmt.Sprintf("ip link set dev %s up", ifce.Name())); err != nil {
-		log.Log(err)
+	cmd = fmt.Sprintf("ip link set dev %s up", ifce.Name())
+	log.Log("[tun]", cmd)
+	if er := link.SetLinkUp(); er != nil {
+		err = fmt.Errorf("%s: %v", cmd, er)
+		return
 	}

 	if err = addTunRoutes(ifce.Name(), cfg.Routes...); err != nil {
@ -61,8 +75,9 @@ func createTun(cfg TunConfig) (conn net.Conn, itf *net.Interface, err error) {

 func createTap(cfg TapConfig) (conn net.Conn, itf *net.Interface, err error) {
 	var ip net.IP
+	var ipNet *net.IPNet
 	if cfg.Addr != "" {
-		ip, _, err = net.ParseCIDR(cfg.Addr)
+		ip, ipNet, err = net.ParseCIDR(cfg.Addr)
 		if err != nil {
 			return
 		}
@ -78,23 +93,37 @@ func createTap(cfg TapConfig) (conn net.Conn, itf *net.Interface, err error) {
 		return
 	}

+	link, err := tenus.NewLinkFrom(ifce.Name())
+	if err != nil {
+		return
+	}
+
 	mtu := cfg.MTU
 	if mtu <= 0 {
 		mtu = DefaultMTU
 	}

-	if err = exeCmd(fmt.Sprintf("ip link set dev %s mtu %d", ifce.Name(), mtu)); err != nil {
-		log.Log(err)
+	cmd := fmt.Sprintf("ip link set dev %s mtu %d", ifce.Name(), mtu)
+	log.Log("[tap]", cmd)
+	if er := link.SetLinkMTU(mtu); er != nil {
+		err = fmt.Errorf("%s: %v", cmd, er)
+		return
 	}

 	if cfg.Addr != "" {
-		if err = exeCmd(fmt.Sprintf("ip address add %s dev %s", cfg.Addr, ifce.Name())); err != nil {
-			log.Log(err)
+		cmd = fmt.Sprintf("ip address add %s dev %s", cfg.Addr, ifce.Name())
+		log.Log("[tap]", cmd)
+		if er := link.SetLinkIp(ip, ipNet); er != nil {
+			err = fmt.Errorf("%s: %v", cmd, er)
+			return
 		}
 	}

-	if err = exeCmd(fmt.Sprintf("ip link set dev %s up", ifce.Name())); err != nil {
-		log.Log(err)
+	cmd = fmt.Sprintf("ip link set dev %s up", ifce.Name())
+	log.Log("[tap]", cmd)
+	if er := link.SetLinkUp(); er != nil {
+		err = fmt.Errorf("%s: %v", cmd, er)
+		return
 	}

 	if err = addTapRoutes(ifce.Name(), cfg.Gateway, cfg.Routes...); err != nil {
@ -120,10 +149,8 @@ func addTunRoutes(ifName string, routes ...IPRoute) error {
 		}
 		cmd := fmt.Sprintf("ip route add %s dev %s", route.Dest.String(), ifName)
 		log.Logf("[tun] %s", cmd)
-
-		args := strings.Split(cmd, " ")
-		if er := exec.Command(args[0], args[1:]...).Run(); er != nil {
-			log.Logf("[tun] %s: %v", cmd, er)
+		if err := netlink.AddRoute(route.Dest.String(), "", "", ifName); err != nil {
+			return fmt.Errorf("%s: %v", cmd, err)
 		}
 	}
 	return nil
@ -136,22 +163,9 @@ func addTapRoutes(ifName string, gw string, routes ...string) error {
 		}
 		cmd := fmt.Sprintf("ip route add %s via %s dev %s", route, gw, ifName)
 		log.Logf("[tap] %s", cmd)
-
-		args := strings.Split(cmd, " ")
-		if er := exec.Command(args[0], args[1:]...).Run(); er != nil {
-			log.Logf("[tap] %s: %v", cmd, er)
+		if err := netlink.AddRoute(route, "", gw, ifName); err != nil {
+			return fmt.Errorf("%s: %v", cmd, err)
 		}
 	}
 	return nil
 }
-
-func exeCmd(cmd string) error {
-	log.Log(cmd)
-
-	args := strings.Split(cmd, " ")
-	if err := exec.Command(args[0], args[1:]...).Run(); err != nil {
-		return fmt.Errorf("%s: %v", cmd, err)
-	}
-
-	return nil
-}
--- a/tuntap_unix.go
+++ b/tuntap_unix.go
@ -1,4 +1,3 @@
-//go:build !linux && !windows && !darwin
 // +build !linux,!windows,!darwin

 package gost
--- a/tuntap_windows.go
+++ b/tuntap_windows.go
@ -28,7 +28,7 @@ func createTun(cfg TunConfig) (conn net.Conn, itf *net.Interface, err error) {
 		return
 	}

-	cmd := fmt.Sprintf("netsh interface ip set address name=\"%s\" "+
+	cmd := fmt.Sprintf("netsh interface ip set address name=%s "+
 		"source=static addr=%s mask=%s gateway=none",
 		ifce.Name(), ip.String(), ipMask(ipNet.Mask))
 	log.Log("[tun]", cmd)
@ -70,7 +70,7 @@ func createTap(cfg TapConfig) (conn net.Conn, itf *net.Interface, err error) {
 	}

 	if ip != nil && ipNet != nil {
-		cmd := fmt.Sprintf("netsh interface ip set address name=\"%s\" "+
+		cmd := fmt.Sprintf("netsh interface ip set address name=%s "+
 			"source=static addr=%s mask=%s gateway=none",
 			ifce.Name(), ip.String(), ipMask(ipNet.Mask))
 		log.Log("[tap]", cmd)
@ -105,7 +105,7 @@ func addTunRoutes(ifName string, gw string, routes ...IPRoute) error {

 		deleteRoute(ifName, route.Dest.String())

-		cmd := fmt.Sprintf("netsh interface ip add route prefix=%s interface=\"%s\" store=active",
+		cmd := fmt.Sprintf("netsh interface ip add route prefix=%s interface=%s store=active",
 			route.Dest.String(), ifName)
 		if gw != "" {
 			cmd += " nexthop=" + gw
@ -127,7 +127,7 @@ func addTapRoutes(ifName string, gw string, routes ...string) error {

 		deleteRoute(ifName, route)

-		cmd := fmt.Sprintf("netsh interface ip add route prefix=%s interface=\"%s\" store=active",
+		cmd := fmt.Sprintf("netsh interface ip add route prefix=%s interface=%s store=active",
 			route, ifName)
 		if gw != "" {
 			cmd += " nexthop=" + gw
@ -142,7 +142,7 @@ func addTapRoutes(ifName string, gw string, routes ...string) error {
 }

 func deleteRoute(ifName string, route string) error {
-	cmd := fmt.Sprintf("netsh interface ip delete route prefix=%s interface=\"%s\" store=active",
+	cmd := fmt.Sprintf("netsh interface ip delete route prefix=%s interface=%s store=active",
 		route, ifName)
 	args := strings.Split(cmd, " ")
 	return exec.Command(args[0], args[1:]...).Run()
--- a/vsock.go
+++ b/vsock.go
@ -1,76 +0,0 @@
-package gost
-
-import (
-	"net"
-	"strconv"
-
-	"github.com/mdlayher/vsock"
-)
-
-// vsockTransporter is a raw VSOCK transporter.
-type vsockTransporter struct{}
-
-// VSOCKTransporter creates a raw VSOCK client.
-func VSOCKTransporter() Transporter {
-	return &vsockTransporter{}
-}
-
-func (tr *vsockTransporter) Dial(addr string, options ...DialOption) (net.Conn, error) {
-	opts := &DialOptions{}
-	for _, option := range options {
-		option(opts)
-	}
-	if opts.Chain == nil {
-		vAddr, err := parseAddr(addr)
-		if err != nil {
-			return nil, err
-		}
-		return vsock.Dial(vAddr.ContextID, vAddr.Port, nil)
-	}
-	return opts.Chain.Dial(addr)
-}
-
-func parseUint32(s string) (uint32, error ) {
-	n, err := strconv.ParseUint(s, 10, 32)
-	if err != nil {
-		return 0, err
-	}
-	return uint32(n), nil
-}
-
-func parseAddr(addr string) (*vsock.Addr, error) {
-	hostStr, portStr, err := net.SplitHostPort(addr)
-	if err != nil {
-		return nil, err
-	}
-	host := uint32(0)
-	if hostStr != "" {
-		host, err = parseUint32(hostStr)
-		if err != nil {
-			return nil, err
-		}
-	}
-
-	port, err := parseUint32(portStr)
-	if err != nil {
-		return nil, err
-	}
-	return &vsock.Addr{ContextID: host, Port: port}, nil
-}
-
-func (tr *vsockTransporter) Handshake(conn net.Conn, options ...HandshakeOption) (net.Conn, error) {
-	return conn, nil
-}
-
-func (tr *vsockTransporter) Multiplex() bool {
-	return false
-}
-
-// VSOCKListener creates a Listener for VSOCK proxy server.
-func VSOCKListener(addr string) (Listener, error) {
-	vAddr, err := parseAddr(addr)
-	if err != nil {
-		return nil, err
-	}
-	return vsock.Listen(vAddr.Port, nil)
-}
--- a/ws.go
+++ b/ws.go
@ -15,8 +15,8 @@ import (
 	"net/url"

 	"github.com/go-log/log"
-	"github.com/gorilla/websocket"
-	smux "github.com/xtaci/smux"
+	"gopkg.in/gorilla/websocket.v1"
+	smux "gopkg.in/xtaci/smux.v1"
 )

 const (