/
main.go
82 lines (74 loc) · 2.13 KB
/
main.go
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package main
import (
"flag"
"fmt"
"log"
"os"
"os/signal"
"path/filepath"
"runtime/pprof"
"syscall"
"github.com/moby/vpnkit/go/pkg/vpnkit/control"
"github.com/moby/vpnkit/go/pkg/vpnkit/http"
)
var (
controlListen string
dataListen string
dataConnect string
debug bool
)
// Listen on either AF_VSOCK or AF_HVSOCK (depending on the kernel) for multiplexed connections
func main() {
flag.StringVar(&controlListen, "control-listen", "", "AF_VSOCK port or socket/Pipe path to listen for control connections")
flag.StringVar(&dataListen, "data-listen", "", "AF_VSOCK port or socket/Pipe path to listen for data connections on")
flag.StringVar(&dataConnect, "data-connect", "", "AF_VSOCK port or socket/Pipe path to connect to on the host for data connections")
flag.BoolVar(&debug, "debug", false, "Enable debug logging")
flag.Parse()
if dataListen == "" && dataConnect == "" {
log.Fatal("You must provide either -data-listen or -data-connect to establish a data connection")
}
quit := make(chan struct{})
defer close(quit)
ctrl := control.Make()
if controlListen != "" {
s, err := http.NewServer(controlListen, ctrl)
if err != nil {
log.Fatalf("unable to create a control server on %s: %s", controlListen, err)
}
s.Start()
} else {
log.Println("Not starting a control server")
}
if dataListen != "" {
go ctrl.Listen(dataListen, quit)
}
if dataConnect != "" {
go func() {
if err := ctrl.Connect(dataConnect, quit); err != nil {
fmt.Printf("unable to connect data on %s: %s\n", dataConnect, err)
}
}()
}
go func() {
c := make(chan os.Signal, 1)
signal.Notify(c, syscall.SIGHUP)
for {
<-c
log.Println("Writing profiles to current directory")
for _, profile := range pprof.Profiles() {
filename := filepath.Join(os.TempDir(), profile.Name()+".profile")
log.Printf("Writing %s", filename)
f, err := os.Create(filename)
if err != nil {
log.Fatalf("unable to create %s: %v", filename, err)
}
profile.WriteTo(f, 2)
f.Close()
}
}
}()
c := make(chan os.Signal, 1)
signal.Notify(c, os.Interrupt)
<-c
log.Println("Interrupt received, shutting down")
}