Deprecate bufferSize

network/default.go

@@ -9,8 +9,6 @@ import (
 
 type defaultDialer struct {
 	net.Dialer
-
-	bufferSize int
 }
 
 func (d *defaultDialer) Dial(network, address string) (net.Conn, error) {
@@ -30,7 +28,7 @@ func (d *defaultDialer) DialContext(ctx context.Context, network, address string
 	}
 
 	// we do not need to call to end user. End users call us.
-	if err := SetServerSocketOptions(conn, d.bufferSize); err != nil {
+	if err := SetServerSocketOptions(conn, 0); err != nil {
 		conn.Close()
 
 		return nil, fmt.Errorf("cannot set socket options: %w", err)
@@ -44,26 +42,20 @@ func (d *defaultDialer) DialContext(ctx context.Context, network, address string
 //
 // The most default one you can imagine. But it has tunes TCP
 // connections and setups SO_REUSEPORT.
+//
+// bufferSize is deprecated and ignored. It is kept here for backward
+// compatibility.
 func NewDefaultDialer(timeout time.Duration, bufferSize int) (Dialer, error) {
 	switch {
 	case timeout < 0:
 		return nil, fmt.Errorf("timeout %v should be positive number", timeout)
-	case bufferSize < 0:
-		return nil, fmt.Errorf("buffer size %d should be positive number", bufferSize)
-	}
-
-	if timeout == 0 {
+	case timeout == 0:
 		timeout = DefaultTimeout
 	}
 
-	if bufferSize == 0 {
-		bufferSize = DefaultBufferSize
-	}
-
 	return &defaultDialer{
 		Dialer: net.Dialer{
 			Timeout: timeout,
 		},
-		bufferSize: bufferSize,
 	}, nil
 }