Ping the service manager early

Maybe
fixes #548

(untested)

dnscrypt-proxy/main.go

@@ -45,7 +45,7 @@ func main() {
 		dlog.Debug(err)
 	}
 	app.proxy = NewProxy()
-
+	_ = ServiceManagerStartNotify()
 	if err := ConfigLoad(&app.proxy, svcFlag); err != nil {
 		dlog.Fatal(err)
 	}

dnscrypt-proxy/privilege_others.go

@@ -38,7 +38,7 @@ func (proxy *Proxy) dropPrivilege(userStr string, fds []*os.File) {
 		dlog.Fatal(err)
 	}
 
-	SystemDNotify()
+	ServiceManagerReadyNotify()
 
 	args = args[1:]
 	args = append(args, "-child")

dnscrypt-proxy/proxy.go

@@ -154,7 +154,7 @@ func (proxy *Proxy) StartProxy() {
 	if liveServers > 0 {
 		dlog.Noticef("dnscrypt-proxy is ready - live servers: %d", liveServers)
 		if !proxy.child {
-			SystemDNotify()
+			ServiceManagerReadyNotify()
 		}
 	} else if err != nil {
 		dlog.Error(err)

dnscrypt-proxy/service_linux.go

@@ -0,0 +1,12 @@
+package main
+
+import "github.com/coreos/go-systemd/daemon"
+
+func ServiceManagerStartNotify() error {
+	daemon.SdNotify(false, "STATUS=Starting")
+	return nil
+}
+
+func ServiceManagerReadyNotify() {
+	daemon.SdNotify(false, "READY=1")
+}

dnscrypt-proxy/service_others.go

@@ -0,0 +1,10 @@
+// +build !linux,!windows
+
+package main
+
+func ServiceManagerStartNotify() error {
+	return nil
+}
+
+func ServiceManagerReadyNotify() {
+}

dnscrypt-proxy/service_windows.go

@@ -0,0 +1,14 @@
+package main
+
+import "golang.org/x/sys/windows/svc/mgr"
+
+func ServiceManagerStartNotify() error {
+	mgr, err := mgr.Connect()
+	if err != nil {
+		return err
+	}
+	mgr.Disconnect()
+	return nil
+}
+
+func ServiceManagerReadyNotify() {}

dnscrypt-proxy/systemd_free.go

@@ -5,5 +5,3 @@ package main
 func (proxy *Proxy) SystemDListeners() error {
 	return nil
 }
-
-func SystemDNotify() {}

dnscrypt-proxy/systemd_linux.go

@@ -4,7 +4,6 @@ import (
 	"net"
 
 	"github.com/coreos/go-systemd/activation"
-	"github.com/coreos/go-systemd/daemon"
 	"github.com/jedisct1/dlog"
 )
 
@@ -28,7 +27,3 @@ func (proxy *Proxy) SystemDListeners() error {
 
 	return nil
 }
-
-func SystemDNotify() {
-	daemon.SdNotify(false, "READY=1")
-}