Fix lint errors

.github/workflows/codeql-analysis.yml

@@ -38,12 +38,9 @@ jobs:
         # https://docs.github.com/en/free-pro-team@latest/github/finding-security-vulnerabilities-and-errors-in-your-code/configuring-code-scanning#changing-the-languages-that-are-analyzed
 
     steps:
-    - name: Checkout repository
-      uses: actions/checkout@v2
-
-    # Initializes the CodeQL tools for scanning.
+    - uses: actions/checkout@v3
     - name: Initialize CodeQL
-      uses: github/codeql-action/init@v1
+      uses: github/codeql-action/init@v2
       with:
         languages: ${{ matrix.language }}
         # If you wish to specify custom queries, you can do so here or in a config file.
@@ -54,7 +51,7 @@ jobs:
     # Autobuild attempts to build any compiled languages  (C/C++, C#, or Java).
     # If this step fails, then you should remove it and run the build manually (see below)
     - name: Autobuild
-      uses: github/codeql-action/autobuild@v1
+      uses: github/codeql-action/autobuild@v2
 
     # ℹ️ Command-line programs to run using the OS shell.
     # 📚 https://git.io/JvXDl
@@ -68,4 +65,4 @@ jobs:
     #   make release
 
     - name: Perform CodeQL Analysis
-      uses: github/codeql-action/analyze@v1
+      uses: github/codeql-action/analyze@v2

.github/workflows/golangci-lint.yml

@@ -16,10 +16,10 @@ jobs:
     steps:
       - uses: actions/setup-go@v3
         with:
-          go-version: 1.18
+          go-version: 1.18.x
+          check-latest: true
       - uses: actions/checkout@v3
-      - name: golangci-lint
-        uses: golangci/golangci-lint-action@v3
+      - uses: golangci/golangci-lint-action@v3
         with:
-          version: v1.45
-          only-new-issues: true
+          version: latest
+          only-new-issues: false

.github/workflows/tests.yml

@@ -12,12 +12,13 @@ jobs:
     runs-on: windows-latest
     strategy:
       matrix:
-        go-version: [1.16.x, 1.17.x, 1.18.x]
+        go-version: [1.17.x, 1.18.x]
     steps:
       - uses: actions/checkout@v3
       - uses: actions/setup-go@v3
         with:
           go-version: ${{ matrix.go-version }}
+          check-latest: true
       - name: Cache installers
         uses: actions/cache@v3
         with:
@@ -34,7 +35,7 @@ jobs:
     runs-on: ubuntu-latest
     strategy:
       matrix:
-        go-version: [1.16.x, 1.17.x, 1.18.x]
+        go-version: [1.17.x, 1.18.x]
     services:
       rabbitmq:
         image: rabbitmq
@@ -45,5 +46,6 @@ jobs:
       - uses: actions/setup-go@v3
         with:
           go-version: ${{ matrix.go-version }}
+          check-latest: true
       - name: Tests
         run: make tests

channel.go

@@ -278,7 +278,8 @@ func (ch *Channel) dispatch(msg message) {
 		// to avoid unexpected interleaving with basic.publish frames if
 		// publishing is happening concurrently
 		ch.m.Lock()
-		ch.send(&channelCloseOk{})
+		// TODO check error case
+		ch.send(&channelCloseOk{}) //nolint
 		ch.m.Unlock()
 		ch.connection.closeChannel(ch, newError(m.ReplyCode, m.ReplyText))
 
@@ -288,7 +289,8 @@ func (ch *Channel) dispatch(msg message) {
 			c <- m.Active
 		}
 		ch.notifyM.RUnlock()
-		ch.send(&channelFlowOk{Active: m.Active})
+		// TODO check error case
+		ch.send(&channelFlowOk{Active: m.Active}) //nolint
 
 	case *basicCancel:
 		ch.notifyM.RLock()

client_test.go

@@ -72,7 +72,7 @@ func (t *server) expectBytes(b []byte) {
 		t.Fatalf("io error expecting bytes: %v", err)
 	}
 
-	if bytes.Compare(b, in) != 0 {
+	if !bytes.Equal(b, in) {
 		t.Fatalf("failed bytes: expected: %s got: %s", string(b), string(in))
 	}
 }
@@ -83,25 +83,33 @@ func (t *server) send(channel int, m message) {
 	if msg, ok := m.(messageWithContent); ok {
 		props, body := msg.getContent()
 		class, _ := msg.id()
-		t.w.WriteFrame(&methodFrame{
+		if err := t.w.WriteFrame(&methodFrame{
 			ChannelId: uint16(channel),
 			Method:    msg,
-		})
-		t.w.WriteFrame(&headerFrame{
+		}); err != nil {
+			t.Fatalf("WriteFrame error: %v", err)
+		}
+		if err := t.w.WriteFrame(&headerFrame{
 			ChannelId:  uint16(channel),
 			ClassId:    class,
 			Size:       uint64(len(body)),
 			Properties: props,
-		})
-		t.w.WriteFrame(&bodyFrame{
+		}); err != nil {
+			t.Fatalf("WriteFrame error: %v", err)
+		}
+		if err := t.w.WriteFrame(&bodyFrame{
 			ChannelId: uint16(channel),
 			Body:      body,
-		})
+		}); err != nil {
+			t.Fatalf("WriteFrame error: %v", err)
+		}
 	} else {
-		t.w.WriteFrame(&methodFrame{
+		if err := t.w.WriteFrame(&methodFrame{
 			ChannelId: uint16(channel),
 			Method:    m,
-		})
+		}); err != nil {
+			t.Fatalf("WriteFrame error: %v", err)
+		}
 	}
 }
 
@@ -435,13 +443,25 @@ func TestConfirmMultipleOrdersDeliveryTags(t *testing.T) {
 
 	confirm := ch.NotifyPublish(make(chan Confirmation))
 
-	ch.Confirm(false)
+	err = ch.Confirm(false)
+	if err != nil {
+		t.Fatalf("channel error setting confirm mode: %v (%s)", ch, err)
+	}
 
 	go func() {
-		ch.Publish("", "q", false, false, Publishing{Body: []byte("pub 1")})
-		ch.Publish("", "q", false, false, Publishing{Body: []byte("pub 2")})
-		ch.Publish("", "q", false, false, Publishing{Body: []byte("pub 3")})
-		ch.Publish("", "q", false, false, Publishing{Body: []byte("pub 4")})
+		var e error
+		if e = ch.Publish("", "q", false, false, Publishing{Body: []byte("pub 1")}); e != nil {
+			t.Errorf("publish error: %v", err)
+		}
+		if e = ch.Publish("", "q", false, false, Publishing{Body: []byte("pub 2")}); e != nil {
+			t.Errorf("publish error: %v", err)
+		}
+		if e = ch.Publish("", "q", false, false, Publishing{Body: []byte("pub 3")}); e != nil {
+			t.Errorf("publish error: %v", err)
+		}
+		if e = ch.Publish("", "q", false, false, Publishing{Body: []byte("pub 4")}); e != nil {
+			t.Errorf("publish error: %v", err)
+		}
 	}()
 
 	// received out of order, consumed in order
@@ -452,10 +472,19 @@ func TestConfirmMultipleOrdersDeliveryTags(t *testing.T) {
 	}
 
 	go func() {
-		ch.Publish("", "q", false, false, Publishing{Body: []byte("pub 5")})
-		ch.Publish("", "q", false, false, Publishing{Body: []byte("pub 6")})
-		ch.Publish("", "q", false, false, Publishing{Body: []byte("pub 7")})
-		ch.Publish("", "q", false, false, Publishing{Body: []byte("pub 8")})
+		var e error
+		if e = ch.Publish("", "q", false, false, Publishing{Body: []byte("pub 5")}); e != nil {
+			t.Errorf("publish error: %v", err)
+		}
+		if e = ch.Publish("", "q", false, false, Publishing{Body: []byte("pub 6")}); e != nil {
+			t.Errorf("publish error: %v", err)
+		}
+		if e = ch.Publish("", "q", false, false, Publishing{Body: []byte("pub 7")}); e != nil {
+			t.Errorf("publish error: %v", err)
+		}
+		if e = ch.Publish("", "q", false, false, Publishing{Body: []byte("pub 8")}); e != nil {
+			t.Errorf("publish error: %v", err)
+		}
 	}()
 
 	for i, tag := range []uint64{5, 6, 7, 8} {
@@ -493,7 +522,10 @@ func TestDeferredConfirmations(t *testing.T) {
 		t.Fatalf("could not open channel: %v (%s)", ch, err)
 	}
 
-	ch.Confirm(false)
+	err = ch.Confirm(false)
+	if err != nil {
+		t.Fatalf("channel error setting confirm mode: %v (%s)", ch, err)
+	}
 
 	var results []*DeferredConfirmation
 	for i := 1; i < 5; i++ {
@@ -665,7 +697,11 @@ func TestPublishBodySliceIssue74(t *testing.T) {
 	}
 
 	for i := 0; i < publishings; i++ {
-		go ch.Publish("", "q", false, false, Publishing{Body: base[0:i]})
+		go func(ii int) {
+			if err := ch.Publish("", "q", false, false, Publishing{Body: base[0:ii]}); err != nil {
+				t.Errorf("publish error: %v", err)
+			}
+		}(i)
 	}
 
 	<-done
@@ -709,7 +745,11 @@ func TestPublishZeroFrameSizeIssue161(t *testing.T) {
 	}
 
 	for i := 0; i < publishings; i++ {
-		go ch.Publish("", "q", false, false, Publishing{Body: []byte("anything")})
+		go func() {
+			if err := ch.Publish("", "q", false, false, Publishing{Body: []byte("anything")}); err != nil {
+				t.Errorf("publish error: %v", err)
+			}
+		}()
 	}
 
 	<-done
@@ -813,7 +853,11 @@ func TestLeakClosedConsumersIssue264(t *testing.T) {
 	if err != nil {
 		t.Fatalf("could not open channel: %v (%s)", ch, err)
 	}
-	ch.Qos(2, 0, false)
+
+	err = ch.Qos(2, 0, false)
+	if err != nil {
+		t.Fatalf("channel Qos error: %v (%s)", ch, err)
+	}
 
 	consumer, err := ch.Consume("queue", tag, false, false, false, false, nil)
 	if err != nil {

connection.go

@@ -8,6 +8,7 @@ package amqp091
 import (
 	"bufio"
 	"crypto/tls"
+	"errors"
 	"io"
 	"net"
 	"reflect"
@@ -465,11 +466,9 @@ func (c *Connection) dispatch0(f frame) {
 		switch m := mf.Method.(type) {
 		case *connectionClose:
 			// Send immediately as shutdown will close our side of the writer.
-			c.send(&methodFrame{
-				ChannelId: 0,
-				Method:    &connectionCloseOk{},
-			})
-
+			// TODO check error case
+			f := &methodFrame{ChannelId: 0, Method: &connectionCloseOk{}}
+			c.send(f) //nolint
 			c.shutdown(newError(m.ReplyCode, m.ReplyText))
 		case *connectionBlocked:
 			for _, c := range c.blocks {
@@ -486,7 +485,8 @@ func (c *Connection) dispatch0(f frame) {
 		// kthx - all reads reset our deadline.  so we can drop this
 	default:
 		// lolwat - channel0 only responds to methods and heartbeats
-		c.closeWith(ErrUnexpectedFrame)
+		// TODO check error case
+		c.closeWith(ErrUnexpectedFrame) //nolint
 	}
 }
 
@@ -518,15 +518,15 @@ func (c *Connection) dispatchClosed(f frame) {
 	if mf, ok := f.(*methodFrame); ok {
 		switch mf.Method.(type) {
 		case *channelClose:
-			c.send(&methodFrame{
-				ChannelId: f.channel(),
-				Method:    &channelCloseOk{},
-			})
+			// TODO check error case
+			f := &methodFrame{ChannelId: f.channel(), Method: &channelCloseOk{}}
+			c.send(f) //nolint
 		case *channelCloseOk:
 			// we are already closed, so do nothing
 		default:
 			// unexpected method on closed channel
-			c.closeWith(ErrClosed)
+			// TODO check error case
+			c.closeWith(ErrClosed) //nolint
 		}
 	}
 }
@@ -600,7 +600,13 @@ func (c *Connection) heartbeater(interval time.Duration, done chan *Error) {
 			// When reading, reset our side of the deadline, if we've negotiated one with
 			// a deadline that covers at least 2 server heartbeats
 			if interval > 0 {
-				conn.SetReadDeadline(time.Now().Add(maxServerHeartbeatsInFlight * interval))
+				if err := conn.SetReadDeadline(time.Now().Add(maxServerHeartbeatsInFlight * interval)); err != nil {
+					var opErr *net.OpError
+					if !errors.As(err, &opErr) {
+						// TODO check error case
+						return
+					}
+				}
 			}
 
 		case <-done:

connection_test.go

@@ -94,20 +94,37 @@ func TestRaceBetweenChannelAndConnectionClose(t *testing.T) {
 // See https://github.com/streadway/amqp/pull/253#issuecomment-292464811 for
 // more details - thanks to jmalloc again.
 func TestRaceBetweenChannelShutdownAndSend(t *testing.T) {
+	const concurrency = 10
 	defer time.AfterFunc(10*time.Second, func() { panic("Close deadlock") }).Stop()
 
 	conn := integrationConnection(t, "channel close/send race")
 	defer conn.Close()
 
 	ch, _ := conn.Channel()
-
 	go ch.Close()
-	for i := 0; i < 10; i++ {
+
+	errs := make(chan error, concurrency)
+	wg := sync.WaitGroup{}
+	wg.Add(concurrency)
+
+	for i := 0; i < concurrency; i++ {
 		go func() {
+			defer wg.Done()
 			// ch.Ack calls ch.send() internally.
-			ch.Ack(42, false)
+			if err := ch.Ack(42, false); err != nil {
+				errs <- err
+			}
 		}()
 	}
+
+	wg.Wait()
+	close(errs)
+
+	for err := range errs {
+		if err != nil {
+			t.Logf("[INFO] %#v (%s) of type %T", err, err, err)
+		}
+	}
 }
 
 func TestQueueDeclareOnAClosedConnectionFails(t *testing.T) {
@@ -127,8 +144,10 @@ func TestConcurrentClose(t *testing.T) {
 	conn := integrationConnection(t, "concurrent close")
 	defer conn.Close()
 
+	errs := make(chan error, concurrency)
 	wg := sync.WaitGroup{}
 	wg.Add(concurrency)
+
 	for i := 0; i < concurrency; i++ {
 		go func() {
 			defer wg.Done()
@@ -156,11 +175,19 @@ func TestConcurrentClose(t *testing.T) {
 
 			// A different/protocol error occurred indicating a race or missed condition
 			if _, other := err.(*Error); other {
-				t.Fatalf("Expected no error, or ErrClosed, or a net.OpError from conn.Close(), got %#v (%s) of type %T", err, err, err)
+				errs <- err
 			}
 		}()
 	}
+
 	wg.Wait()
+	close(errs)
+
+	for err := range errs {
+		if err != nil {
+			t.Fatalf("Expected no error, or ErrClosed, or a net.OpError from conn.Close(), got %#v (%s) of type %T", err, err, err)
+		}
+	}
 }
 
 // TestPlaintextDialTLS ensures amqp:// connections succeed when using DialTLS.