network: do not use error channel to start network srv

It's obsolete thing, we have looger and it perfectly suits our needs.

Signed-off-by: Anna Shaleva <shaleva.ann@nspcc.ru>

cli/server/server.go

@@ -489,7 +489,7 @@ func startServer(ctx *cli.Context) error {
 	rpcServer := rpcsrv.New(chain, cfg.ApplicationConfiguration.RPC, serv, oracleSrv, log, errChan)
 	serv.AddService(&rpcServer)
 
-	go serv.Start(errChan)
+	go serv.Start()
 	if !cfg.ApplicationConfiguration.RPC.StartWhenSynchronized {
 		rpcServer.Start()
 	}

internal/testcli/executor.go

@@ -164,7 +164,7 @@ func NewTestChain(t *testing.T, f func(*config.Config), run bool) (*core.Blockch
 	})
 	require.NoError(t, err)
 	netSrv.AddConsensusService(cons, cons.OnPayload, cons.OnTransaction)
-	go netSrv.Start(make(chan error, 1))
+	go netSrv.Start()
 	errCh := make(chan error, 2)
 	rpcServer := rpcsrv.New(chain, cfg.ApplicationConfiguration.RPC, netSrv, nil, logger, errCh)
 	rpcServer.Start()

pkg/network/server.go

@@ -265,7 +265,7 @@ func (s *Server) ID() uint32 {
 
 // Start will start the server and its underlying transport. Calling it twice
 // is an error.
-func (s *Server) Start(errChan chan error) {
+func (s *Server) Start() {
 	s.log.Info("node started",
 		zap.Uint32("blockHeight", s.chain.BlockHeight()),
 		zap.Uint32("headerHeight", s.chain.HeaderHeight()))

pkg/network/server_test.go

@@ -87,20 +87,11 @@ func TestNewServer(t *testing.T) {
 	})
 }
 
-func startWithChannel(s *Server) chan error {
-	ch := make(chan error)
-	go func() {
-		s.Start(ch)
-		close(ch)
-	}()
-	return ch
-}
-
 func TestServerStartAndShutdown(t *testing.T) {
 	t.Run("no consensus", func(t *testing.T) {
 		s := newTestServer(t, ServerConfig{})
 
-		ch := startWithChannel(s)
+		go s.Start()
 		p := newLocalPeer(t, s)
 		s.register <- p
 		require.Eventually(t, func() bool { return 1 == s.PeerCount() }, time.Second, time.Millisecond*10)
@@ -109,7 +100,6 @@ func TestServerStartAndShutdown(t *testing.T) {
 		assert.Nil(t, s.txCallback)
 
 		s.Shutdown()
-		<-ch
 
 		require.True(t, s.transports[0].(*fakeTransp).closed.Load())
 		err, ok := p.droppedWith.Load().(error)
@@ -121,14 +111,13 @@ func TestServerStartAndShutdown(t *testing.T) {
 		cons := new(fakeConsensus)
 		s.AddConsensusService(cons, cons.OnPayload, cons.OnTransaction)
 
-		ch := startWithChannel(s)
+		go s.Start()
 		p := newLocalPeer(t, s)
 		s.register <- p
 
 		assert.True(t, s.services["fake"].(*fakeConsensus).started.Load())
 
 		s.Shutdown()
-		<-ch
 
 		require.True(t, s.services["fake"].(*fakeConsensus).stopped.Load())
 	})
@@ -401,10 +390,9 @@ func startTestServer(t *testing.T, protocolCfg ...func(*config.Blockchain)) *Ser
 }
 
 func startWithCleanup(t *testing.T, s *Server) {
-	ch := startWithChannel(s)
+	go s.Start()
 	t.Cleanup(func() {
 		s.Shutdown()
-		<-ch
 	})
 }
 

pkg/services/rpcsrv/subscription_test.go

@@ -99,7 +99,7 @@ func TestSubscriptions(t *testing.T) {
 	defer chain.Close()
 	defer rpcSrv.Shutdown()
 
-	go rpcSrv.coreServer.Start(make(chan error))
+	go rpcSrv.coreServer.Start()
 	defer rpcSrv.coreServer.Shutdown()
 
 	for _, feed := range subFeeds {
@@ -374,7 +374,7 @@ func TestFilteredNotaryRequestSubscriptions(t *testing.T) {
 	}
 
 	chain, rpcSrv, c, respMsgs, finishedFlag := initCleanServerAndWSClient(t)
-	go rpcSrv.coreServer.Start(make(chan error, 1))
+	go rpcSrv.coreServer.Start()
 
 	defer chain.Close()
 	defer rpcSrv.Shutdown()