Cherry-picks for 2.10.26-RC.5

.github/workflows/cov.yaml

@@ -42,8 +42,8 @@ jobs:
 
       - name: Coveralls
         # Use commit hash here to avoid a re-tagging attack, as this is a third-party action
-        # Commit 3dfc5567390f6fa9267c0ee9c251e4c8c3f18949 = tag v2
-        uses: coverallsapp/github-action@643bc377ffa44ace6394b2b5d0d3950076de9f63
+        # Commit 648a8eb78e6d50909eff900e4ec85cab4524a45b = tag v2.3.6
+        uses: coverallsapp/github-action@648a8eb78e6d50909eff900e4ec85cab4524a45b
         with:
           github-token: ${{ secrets.github_token }}
           file: src/github.com/nats-io/nats-server/coverage.lcov

go.mod

@@ -5,7 +5,7 @@ go 1.22.0
 toolchain go1.22.8
 
 require (
-	github.com/klauspost/compress v1.17.11
+	github.com/klauspost/compress v1.18.0
 	github.com/minio/highwayhash v1.0.3
 	github.com/nats-io/jwt/v2 v2.7.3
 	github.com/nats-io/nats.go v1.39.0

go.sum

@@ -1,7 +1,7 @@
 github.com/davecgh/go-spew v1.1.1 h1:vj9j/u1bqnvCEfJOwUhtlOARqs3+rkHYY13jYWTU97c=
 github.com/davecgh/go-spew v1.1.1/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
-github.com/klauspost/compress v1.17.11 h1:In6xLpyWOi1+C7tXUUWv2ot1QvBjxevKAaI6IXrJmUc=
-github.com/klauspost/compress v1.17.11/go.mod h1:pMDklpSncoRMuLFrf1W9Ss9KT+0rH90U12bZKk7uwG0=
+github.com/klauspost/compress v1.18.0 h1:c/Cqfb0r+Yi+JtIEq73FWXVkRonBlf0CRNYc8Zttxdo=
+github.com/klauspost/compress v1.18.0/go.mod h1:2Pp+KzxcywXVXMr50+X0Q/Lsb43OQHYWRCY2AiWywWQ=
 github.com/minio/highwayhash v1.0.3 h1:kbnuUMoHYyVl7szWjSxJnxw11k2U709jqFPPmIUyD6Q=
 github.com/minio/highwayhash v1.0.3/go.mod h1:GGYsuwP/fPD6Y9hMiXuapVvlIUEhFhMTh0rxU3ik1LQ=
 github.com/nats-io/jwt/v2 v2.7.3 h1:6bNPK+FXgBeAqdj4cYQ0F8ViHRbi7woQLq4W29nUAzE=

server/accounts.go

@@ -2026,7 +2026,7 @@ func (a *Account) addServiceImportSub(si *serviceImport) error {
 	a.mu.Unlock()
 
 	cb := func(sub *subscription, c *client, acc *Account, subject, reply string, msg []byte) {
-		c.processServiceImport(si, acc, msg)
+		c.pa.delivered = c.processServiceImport(si, acc, msg)
 	}
 	sub, err := c.processSubEx([]byte(subject), nil, []byte(sid), cb, true, true, false)
 	if err != nil {

server/accounts_test.go

@@ -1,4 +1,4 @@
-// Copyright 2018-2024 The NATS Authors
+// Copyright 2018-2025 The NATS Authors
 // Licensed under the Apache License, Version 2.0 (the "License");
 // you may not use this file except in compliance with the License.
 // You may obtain a copy of the License at
@@ -3670,3 +3670,31 @@ func TestAccountServiceAndStreamExportDoubleDelivery(t *testing.T) {
 	time.Sleep(200 * time.Millisecond)
 	require_Equal(t, msgs.Load(), 1)
 }
+
+func TestAccountServiceImportNoResponders(t *testing.T) {
+	// Setup NATS server.
+	cf := createConfFile(t, []byte(`
+				port: -1
+				accounts: {
+					accExp: {
+						users: [{user: accExp, password: accExp}]
+						exports: [{service: "foo"}]
+					}
+					accImp: {
+						users: [{user: accImp, password: accImp}]
+						imports: [{service: {account: accExp, subject: "foo"}}]
+					}
+				}
+			`))
+
+	s, _ := RunServerWithConfig(cf)
+	defer s.Shutdown()
+
+	// Connect to the import account. We will not setup any responders, so a request should
+	// error out with ErrNoResponders.
+	nc := natsConnect(t, s.ClientURL(), nats.UserInfo("accImp", "accImp"))
+	defer nc.Close()
+
+	_, err := nc.Request("foo", []byte("request"), 250*time.Millisecond)
+	require_Error(t, err, nats.ErrNoResponders)
+}

server/client.go

@@ -3472,17 +3472,25 @@ func (c *client) deliverMsg(prodIsMQTT bool, sub *subscription, acc *Account, su
 		}
 		client.mu.Unlock()
 
+		// For service imports, track if we delivered.
+		didDeliver := true
+
 		// Internal account clients are for service imports and need the '\r\n'.
 		start := time.Now()
 		if client.kind == ACCOUNT {
 			sub.icb(sub, c, acc, string(subject), string(reply), msg)
+			// If we are a service import check to make sure we delivered the message somewhere.
+			if sub.si {
+				didDeliver = c.pa.delivered
+			}
 		} else {
 			sub.icb(sub, c, acc, string(subject), string(reply), msg[:msgSize])
 		}
 		if dur := time.Since(start); dur >= readLoopReportThreshold {
 			srv.Warnf("Internal subscription on %q took too long: %v", subject, dur)
 		}
-		return true
+
+		return didDeliver
 	}
 
 	// If we are a client and we detect that the consumer we are
@@ -4196,17 +4204,17 @@ var (
 
 // processServiceImport is an internal callback when a subscription matches an imported service
 // from another account. This includes response mappings as well.
-func (c *client) processServiceImport(si *serviceImport, acc *Account, msg []byte) {
+func (c *client) processServiceImport(si *serviceImport, acc *Account, msg []byte) bool {
 	// If we are a GW and this is not a direct serviceImport ignore.
 	isResponse := si.isRespServiceImport()
 	if (c.kind == GATEWAY || c.kind == ROUTER) && !isResponse {
-		return
+		return false
 	}
 	// Detect cycles and ignore (return) when we detect one.
 	if len(c.pa.psi) > 0 {
 		for i := len(c.pa.psi) - 1; i >= 0; i-- {
 			if psi := c.pa.psi[i]; psi.se == si.se {
-				return
+				return false
 			}
 		}
 	}
@@ -4227,7 +4235,7 @@ func (c *client) processServiceImport(si *serviceImport, acc *Account, msg []byt
 	// response service imports and rrMap entries which all will need to simply expire.
 	// TODO(dlc) - Come up with something better.
 	if shouldReturn || (checkJS && si.se != nil && si.se.acc == c.srv.SystemAccount()) {
-		return
+		return false
 	}
 
 	var nrr []byte
@@ -4375,6 +4383,10 @@ func (c *client) processServiceImport(si *serviceImport, acc *Account, msg []byt
 	c.in.rts = orts
 	c.pa = pacopy
 
+	// Before we undo didDeliver based on tracing and last mile, mark in the c.pa which informs us of no responders status.
+	// If we override due to tracing and traceOnly we do not want to send back a no responders.
+	c.pa.delivered = didDeliver
+
 	// Determine if we should remove this service import. This is for response service imports.
 	// We will remove if we did not deliver, or if we are a response service import and we are
 	// a singleton, or we have an EOF message.
@@ -4404,6 +4416,8 @@ func (c *client) processServiceImport(si *serviceImport, acc *Account, msg []byt
 			siAcc.removeRespServiceImport(rsi, reason)
 		}
 	}
+
+	return didDeliver
 }
 
 func (c *client) addSubToRouteTargets(sub *subscription) {

server/config_check_test.go

@@ -1817,6 +1817,23 @@ func TestConfigCheck(t *testing.T) {
 			errorLine: 9,
 			errorPos:  9,
 		},
+		{
+			name: "invalid duration for remote leafnode first info timeout",
+			config: `
+				leafnodes {
+					port: -1
+					remotes [
+						{
+							url: "nats://127.0.0.1:123"
+							first_info_timeout: abc
+						}
+					]
+				}
+			`,
+			err:       fmt.Errorf("error parsing first_info_timeout: time: invalid duration %q", "abc"),
+			errorLine: 7,
+			errorPos:  8,
+		},
 		{
 			name:       "show warnings on empty configs without values",
 			config:     ``,

server/filestore.go

@@ -5308,6 +5308,7 @@ func (mb *msgBlock) writeMsgRecord(rl, seq uint64, subj string, mhdr, msg []byte
 		if ss, ok := mb.fss.Find(stringToBytes(subj)); ok && ss != nil {
 			ss.Msgs++
 			ss.Last = seq
+			ss.lastNeedsUpdate = false
 		} else {
 			mb.fss.Insert(stringToBytes(subj), SimpleState{Msgs: 1, First: seq, Last: seq})
 		}
@@ -6030,6 +6031,7 @@ func (mb *msgBlock) indexCacheBuf(buf []byte) error {
 				if ss, ok := mb.fss.Find(bsubj); ok && ss != nil {
 					ss.Msgs++
 					ss.Last = seq
+					ss.lastNeedsUpdate = false
 				} else {
 					mb.fss.Insert(bsubj, SimpleState{
 						Msgs:  1,
@@ -8057,8 +8059,11 @@ func (mb *msgBlock) recalculateForSubj(subj string, ss *SimpleState) {
 	}
 	if startSlot >= len(mb.cache.idx) {
 		ss.First = ss.Last
+		ss.firstNeedsUpdate = false
+		ss.lastNeedsUpdate = false
 		return
 	}
+
 	endSlot := int(ss.Last - mb.cache.fseq)
 	if endSlot < 0 {
 		endSlot = 0
@@ -8085,6 +8090,8 @@ func (mb *msgBlock) recalculateForSubj(subj string, ss *SimpleState) {
 			li := int(bi) - mb.cache.off
 			if li >= len(mb.cache.buf) {
 				ss.First = ss.Last
+				// Only need to reset ss.lastNeedsUpdate, ss.firstNeedsUpdate is already reset above.
+				ss.lastNeedsUpdate = false
 				return
 			}
 			buf := mb.cache.buf[li:]
@@ -8208,6 +8215,7 @@ func (mb *msgBlock) generatePerSubjectInfo() error {
 			if ss, ok := mb.fss.Find(stringToBytes(sm.subj)); ok && ss != nil {
 				ss.Msgs++
 				ss.Last = seq
+				ss.lastNeedsUpdate = false
 			} else {
 				mb.fss.Insert(stringToBytes(sm.subj), SimpleState{Msgs: 1, First: seq, Last: seq})
 			}

server/jetstream_cluster_1_test.go

@@ -7655,7 +7655,11 @@ func TestJetStreamClusterRecreateConsumerFromMetaSnapshot(t *testing.T) {
 				return err
 			} else if o := mset.lookupConsumer("CONSUMER"); o == nil {
 				return errors.New("consumer doesn't exist")
-			} else if ccrg := o.raftNode().Group(); consumerRg == _EMPTY_ {
+			} else if rn := o.raftNode(); rn == nil {
+				return errors.New("consumer raft node doesn't exist")
+			} else if ccrg := rn.Group(); ccrg == _EMPTY_ {
+				return errors.New("consumer raft group doesn't exist")
+			} else if consumerRg == _EMPTY_ {
 				consumerRg = ccrg
 			} else if consumerRg != ccrg {
 				return errors.New("consumer raft groups don't match")

server/jetstream_cluster_2_test.go

@@ -7051,7 +7051,7 @@ func TestJetStreamClusterStreamDirectGetNotTooSoon(t *testing.T) {
 	defer nc.Close()
 
 	_, err = nc.Request(getSubj, nil, time.Second)
-	require_Error(t, err, nats.ErrTimeout)
+	require_Error(t, err, nats.ErrNoResponders)
 
 	// Now start all and make sure they all eventually have subs for direct access.
 	c.restartAll()

server/jwt_test.go

@@ -6189,8 +6189,7 @@ func TestJWTAccountProtectedImport(t *testing.T) {
 
 		// ensure service fails
 		_, err = ncImp.Request(srvcSub, []byte("hello"), time.Second)
-		require_Error(t, err)
-		require_Contains(t, err.Error(), "timeout")
+		require_Error(t, err, nats.ErrNoResponders)
 		s.AccountResolver().Store(exportPub, exportJWTOn)
 		// ensure stream fails
 		err = ncExp.Publish(strmSub, []byte("hello"))

server/leafnode.go

@@ -997,6 +997,7 @@ func (s *Server) createLeafNode(conn net.Conn, rURL *url.URL, remote *leafNodeCf
 	c.Noticef("Leafnode connection created%s %s", remoteSuffix, c.opts.Name)
 
 	var tlsFirst bool
+	var infoTimeout time.Duration
 	if remote != nil {
 		solicited = true
 		remote.Lock()
@@ -1006,6 +1007,7 @@ func (s *Server) createLeafNode(conn net.Conn, rURL *url.URL, remote *leafNodeCf
 			c.leaf.isSpoke = true
 		}
 		tlsFirst = remote.TLSHandshakeFirst
+		infoTimeout = remote.FirstInfoTimeout
 		remote.Unlock()
 		c.acc = acc
 	} else {
@@ -1063,7 +1065,7 @@ func (s *Server) createLeafNode(conn net.Conn, rURL *url.URL, remote *leafNodeCf
 				}
 			}
 			// We need to wait for the info, but not for too long.
-			c.nc.SetReadDeadline(time.Now().Add(DEFAULT_LEAFNODE_INFO_WAIT))
+			c.nc.SetReadDeadline(time.Now().Add(infoTimeout))
 		}
 
 		// We will process the INFO from the readloop and finish by
@@ -2897,6 +2899,7 @@ func (c *client) leafNodeSolicitWSConnection(opts *Options, rURL *url.URL, remot
 	compress := remote.Websocket.Compression
 	// By default the server will mask outbound frames, but it can be disabled with this option.
 	noMasking := remote.Websocket.NoMasking
+	infoTimeout := remote.FirstInfoTimeout
 	remote.RUnlock()
 	// Will do the client-side TLS handshake if needed.
 	tlsRequired, err := c.leafClientHandshakeIfNeeded(remote, opts)
@@ -2949,14 +2952,14 @@ func (c *client) leafNodeSolicitWSConnection(opts *Options, rURL *url.URL, remot
 	if noMasking {
 		req.Header.Add(wsNoMaskingHeader, wsNoMaskingValue)
 	}
+	c.nc.SetDeadline(time.Now().Add(infoTimeout))
 	if err := req.Write(c.nc); err != nil {
 		return nil, WriteError, err
 	}
 
 	var resp *http.Response
 
 	br := bufio.NewReaderSize(c.nc, MAX_CONTROL_LINE_SIZE)
-	c.nc.SetReadDeadline(time.Now().Add(DEFAULT_LEAFNODE_INFO_WAIT))
 	resp, err = http.ReadResponse(br, req)
 	if err == nil &&
 		(resp.StatusCode != 101 ||