Fix errcheck lint: discard SetReadDeadline and Close errors

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

Author: fuziontech

server/conn.go

@@ -247,7 +247,7 @@ func (c *clientConn) startDisconnectMonitor(ctx context.Context) (stop func()) {
 	go func() {
 		defer close(stopped)
 		for {
-			c.conn.SetReadDeadline(time.Now().Add(500 * time.Millisecond))
+			_ = c.conn.SetReadDeadline(time.Now().Add(500 * time.Millisecond))
 			_, err := c.reader.Peek(1)
 			if err != nil {
 				if netErr, ok := err.(net.Error); ok && netErr.Timeout() {
@@ -281,11 +281,11 @@ func (c *clientConn) startDisconnectMonitor(ctx context.Context) (stop func()) {
 	return func() {
 		close(done)
 		// Interrupt any in-progress Peek by setting a past deadline.
-		c.conn.SetReadDeadline(time.Now())
+		_ = c.conn.SetReadDeadline(time.Now())
 		<-stopped
 		// Clear the deadline so the message loop's next read uses
 		// the idle timeout (or no deadline).
-		c.conn.SetReadDeadline(time.Time{})
+		_ = c.conn.SetReadDeadline(time.Time{})
 	}
 }
 

server/flight_executor_test.go

@@ -180,8 +180,8 @@ func TestFlightExecutor_MergedContextCallerCancel(t *testing.T) {
 func TestDisconnectMonitor_DetectsClose(t *testing.T) {
 	// Create a connected pair of net.Conn (using net.Pipe).
 	server, client := net.Pipe()
-	defer server.Close()
-	defer client.Close()
+	defer func() { _ = server.Close() }()
+	defer func() { _ = client.Close() }()
 
 	connCtx, connCancel := context.WithCancel(context.Background())
 	defer connCancel()
@@ -200,7 +200,7 @@ func TestDisconnectMonitor_DetectsClose(t *testing.T) {
 	defer stop()
 
 	// Close the client side to simulate client disconnect.
-	client.Close()
+	_ = client.Close()
 
 	// The monitor should detect the disconnect and cancel connCtx.
 	select {
@@ -215,8 +215,8 @@ func TestDisconnectMonitor_StopBeforeDisconnect(t *testing.T) {
 	// Verify that stop() returns promptly and the context is NOT cancelled
 	// when the connection is still alive.
 	server, client := net.Pipe()
-	defer server.Close()
-	defer client.Close()
+	defer func() { _ = server.Close() }()
+	defer func() { _ = client.Close() }()
 
 	connCtx, connCancel := context.WithCancel(context.Background())
 	defer connCancel()
@@ -260,8 +260,8 @@ func TestDisconnectMonitor_BufferedDataNotLost(t *testing.T) {
 	// Verify that data arriving during monitoring stays in the bufio.Reader
 	// buffer and can be read after the monitor stops.
 	server, client := net.Pipe()
-	defer server.Close()
-	defer client.Close()
+	defer func() { _ = server.Close() }()
+	defer func() { _ = client.Close() }()
 
 	connCtx, connCancel := context.WithCancel(context.Background())
 	defer connCancel()