谁懂这个 demo 的含金量？ /狗头 保命 
package main

import (
 "context"
 "encoding/json"
 "fmt"
 "io"
 "net"
 "net/http"
 "net/url"
 "os"
 "time"

 "github.com/sigcn/pg/disco"
 "github.com/sigcn/pg/langs"
 "github.com/sigcn/pg/p2p"
 "github.com/sigcn/pg/peermap/network"
 "github.com/sigcn/pg/vpn"
 "github.com/sigcn/pg/vpn/nic"
 "github.com/sigcn/pg/vpn/nic/gvisor"
 "gvisor.dev/gvisor/pkg/tcpip/network/ipv4"
 "g...