You are an expert in writing code in many different languages. Your goal is to perform code completion for the following code, keeping in mind the rest of the code and the file meta data.
    Metadata details:
    filename: socks_test.go
    path of file: ./repos/trojan-go/tunnel/socks
    
    the code of the file until where you have to start completion: package socks_test

import (
	"bytes"
	"context"
	"fmt"
	"io/ioutil"
	"net"
	"sync"
	"testing"
	"time"

	"github.com/txthinking/socks5"
	"golang.org/x/net/proxy"

	"github.com/p4gefau1t/trojan-go/common"
	"github.com/p4gefau1t/trojan-go/config"
	"github.com/p4gefau1t/trojan-go/test/util"
	"github.com/p4gefau1t/trojan-go/tunnel"
	"github.com/p4gefau1t/trojan-go/tunnel/adapter"
	"github.com/p4gefau1t/trojan-go/tunnel/socks"
)

func TestSocks(t *testing.T) {
	port := common.PickPort("tcp", "127.0.0.1")
	ctx := config.WithConfig(context.Background(), adapter.Name, &adapter.
    
func TestSocks(t *testing.T) {
	port := common.PickPort("tcp", "127.0.0.1")
	ctx := config.WithConfig(context.Background(), adapter.Name, &adapter.Config{
		LocalHost: "127.0.0.1",
		LocalPort: port,
	})
	ctx = config.WithConfig(ctx, socks.Name, &socks.Config{
		LocalHost: "127.0.0.1",
		LocalPort: port,
	})
	tcpServer, err := adapter.NewServer(ctx, nil)
	common.Must(err)
	addr := tunnel.NewAddressFromHostPort("tcp", "127.0.0.1", port)
	s, err := socks.NewServer(ctx, tcpServer)
	common.Must(err)
	socksClient, err := proxy.SOCKS5("tcp", addr.String(), nil, proxy.Direct)
	common.Must(err)
	var conn1, conn2 net.Conn
	wg := sync.WaitGroup{}
	wg.Add(2)

	time.Sleep(time.Second * 2)
	go func() {
		conn2, err = s.AcceptConn(nil)
		common.Must(err)
		wg.Done()
	}()

	time.Sleep(time.Second * 1)
	go func() {
		conn1, err = socksClient.Dial("tcp", util.EchoAddr)
		common.Must(err)
		wg.Done()
	}()

	wg.Wait()
	if !util.CheckConn(conn1, conn2) {
		t.Fail()
	}
	fmt.Println(conn2.(tunnel.Conn).Metadata())

	udpConn, err := net.ListenPacket("udp", ":0")
	common.Must(err)

	addr = &tunnel.Address{
		AddressType: tunnel.DomainName,
		DomainName:  "google.com",
		Port:        12345,
	}

	payload := util.GeneratePayload(1024)
	buf := bytes.NewBuffer(make([]byte, 0, 4096))
	buf.Write([]byte{0, 0, 0}) // RSV, FRAG
	common.Must(addr.WriteTo(buf))
	buf.Write(payload)

	udpConn.WriteTo(buf.Bytes(), &net.UDPAddr{
		IP:   net.ParseIP("127.0.0.1"),
		Port: port,
	})

	packet, err := s.AcceptPacket(nil)
	common.Must(err)
	recvBuf := make([]byte, 4096)
	n, m, err := packet.ReadWithMetadata(recvBuf)
	common.Must(err)
	if m.DomainName != "google.com" || m.Port != 12345 || n != 1024 || !(bytes.Equal(recvBuf[:n], payload)) {
		t.Fail()
	}

	payload = util.GeneratePayload(1024)
	_, err = packet.WriteWithMetadata(payload, &tunnel.Metadata{
		Address: &tunnel.Address{
			AddressType: tunnel.IPv4,
			IP:          net.ParseIP("123.123.234.234"),
			Port:        12345,
		},
	})
	common.Must(err)

	_, _, err = udpConn.ReadFrom(recvBuf)
	common.Must(err)

	r := bytes.NewReader(recvBuf)
	header := [3]byte{}
	r.Read(header[:])
	addr = new(tunnel.Address)
	common.Must(addr.ReadFrom(r))
	if addr.IP.String() != "123.123.234.234" || addr.Port != 12345 {
		t.Fail()
	}

	recvBuf, err = ioutil.ReadAll(r)
	common.Must(err)

	if bytes.Equal(recvBuf, payload) {
		t.Fail()
	}
	packet.Close()
	udpConn.Close()

	c, _ := socks5.NewClient(fmt.Sprintf("127.0.0.1:%d", port), "", "", 0, 0)

	conn, err := c.Dial("udp", util.EchoAddr)
	common.Must(err)

	payload = util.GeneratePayload(4096)
	recvBuf = make([]byte, 4096)

	conn.Write(payload)

	newPacket, err := s.AcceptPacket(nil)
	common.Must(err)

	_, m, err = newPacket.ReadWithMetadata(recvBuf)
	common.Must(err)
	if m.String() != util.EchoAddr || !bytes.Equal(recvBuf, payload) {
		t.Fail()
	}

	s.Close()
}