fix: refactoring code of graceful exits (#1885)

* fix: plant a layer

* fix: print chanal

* fix: print sigs

* fix: print the sigs

* fix: reconstruct exit gracefully

* fix: fix the timeout

* fix: fix the netDone

* fix: fix the process exit

* fix: refactor the elegant startup code

* fix: fix the Signal.Notify

* fix: fix the code

* fix: remove not used header import.

* Update init.go

* fix: fix the InitConfig error

* fix: fix branch name

* fix: fix the signal value

* fix: replace the signal with SIGTERM

* fix: fix the script

* fix: fix the unsolve error

* fix: return the SIGTERM received,shutting down

* fix: fix the tranfer exit error

* fix: fix the error

* fix: replace the SIGnal

* fix: del the error return in tranfer

* fix: fix SIGTERM error

* fix: del the unreachalbe code

* fix: fix the make stop print  error

---------

Co-authored-by: OpenIM-Gordon <46924906+FGadvancer@users.noreply.github.com>
Co-authored-by: Xinwei Xiong (cubxxw) <3293172751nss@gmail.com>

internal/msggateway/init.go

@@ -18,9 +18,6 @@ import (
 	"fmt"
 	"time"
 
-	"github.com/OpenIMSDK/tools/utils"
-	"golang.org/x/sync/errgroup"
-
 	"github.com/openimsdk/open-im-server/v3/pkg/common/config"
 )
 
@@ -46,20 +43,12 @@ func RunWsAndServer(rpcPort, wsPort, prometheusPort int) error {
 	}
 
 	hubServer := NewServer(rpcPort, prometheusPort, longServer)
-
-	wg := errgroup.Group{}
-	wg.Go(func() error {
+	netDone := make(chan error)
+	go func() {
 		err = hubServer.Start()
 		if err != nil {
-			return utils.Wrap1(err)
+			netDone <- err
 		}
-		return err
-	})
-
-	wg.Go(func() error {
-		return hubServer.LongConnServer.Run()
-	})
-
-	err = wg.Wait()
-	return err
+	}()
+	return hubServer.LongConnServer.Run(netDone)
 }