add socks5 udp relay

cmd/gost/main.go

@@ -2,6 +2,8 @@ package main
 
 import (
 	stdlog "log"
+	"net/http"
+	_ "net/http/pprof"
 
 	"github.com/go-gost/gost/pkg/config"
 	"github.com/go-gost/gost/pkg/logger"
@@ -19,6 +21,16 @@ func main() {
 	}
 	log = logFromConfig(cfg.Log)
 
+	if cfg.Profiling != nil && cfg.Profiling.Enabled {
+		go func() {
+			addr := cfg.Profiling.Addr
+			if addr == "" {
+				addr = ":6060"
+			}
+			log.Info("profiling serve on: ", addr)
+			log.Fatal(http.ListenAndServe(addr, nil))
+		}()
+	}
 	services := buildService(cfg)
 	for _, svc := range services {
 		go svc.Run()