http://netty.io/netty-all/: Netty is an asynchronous event-driven network application framework for rapid development of maintainable high performance protocol servers and clients. (The Netty Project) 
public class io.netty.handler.codec.http.HttpResponseEncoder extends io.netty.handler.codec.http.HttpObjectEncoder<io.netty.handler.codec.http.HttpResponse>
  minor version: 0
  major version: 59
  flags: flags: (0x0021) ACC_PUBLIC, ACC_SUPER
  this_class: io.netty.handler.codec.http.HttpResponseEncoder
  super_class: io.netty.handler.codec.http.HttpObjectEncoder
{
  public void <init>();
    descriptor: ()V
    flags: (0x0001) ACC_PUBLIC
    Code:
      stack=1, locals=1, args_size=1
        start local 0 // io.netty.handler.codec.http.HttpResponseEncoder this
         0: .line 27
            aload 0 /* this */
            invokespecial io.netty.handler.codec.http.HttpObjectEncoder.<init>:()V
            return
        end local 0 // io.netty.handler.codec.http.HttpResponseEncoder this
      LocalVariableTable:
        Start  End  Slot  Name  Signature
            0    1     0  this  Lio/netty/handler/codec/http/HttpResponseEncoder;

  public boolean acceptOutboundMessage(java.lang.Object);
    descriptor: (Ljava/lang/Object;)Z
    flags: (0x0001) ACC_PUBLIC
    Code:
      stack=2, locals=2, args_size=2
        start local 0 // io.netty.handler.codec.http.HttpResponseEncoder this
        start local 1 // java.lang.Object msg
         0: .line 31
            aload 0 /* this */
            aload 1 /* msg */
            invokespecial io.netty.handler.codec.http.HttpObjectEncoder.acceptOutboundMessage:(Ljava/lang/Object;)Z
            ifeq 1
            aload 1 /* msg */
            instanceof io.netty.handler.codec.http.HttpRequest
            ifne 1
            iconst_1
            ireturn
      StackMap locals:
      StackMap stack:
         1: iconst_0
            ireturn
        end local 1 // java.lang.Object msg
        end local 0 // io.netty.handler.codec.http.HttpResponseEncoder this
      LocalVariableTable:
        Start  End  Slot  Name  Signature
            0    2     0  this  Lio/netty/handler/codec/http/HttpResponseEncoder;
            0    2     1   msg  Ljava/lang/Object;
    Exceptions:
      throws java.lang.Exception
    MethodParameters:
      Name  Flags
      msg   

  protected void encodeInitialLine(io.netty.buffer.ByteBuf, io.netty.handler.codec.http.HttpResponse);
    descriptor: (Lio/netty/buffer/ByteBuf;Lio/netty/handler/codec/http/HttpResponse;)V
    flags: (0x0004) ACC_PROTECTED
    Code:
      stack=2, locals=3, args_size=3
        start local 0 // io.netty.handler.codec.http.HttpResponseEncoder this
        start local 1 // io.netty.buffer.ByteBuf buf
        start local 2 // io.netty.handler.codec.http.HttpResponse response
         0: .line 36
            aload 2 /* response */
            invokeinterface io.netty.handler.codec.http.HttpResponse.protocolVersion:()Lio/netty/handler/codec/http/HttpVersion;
            aload 1 /* buf */
            invokevirtual io.netty.handler.codec.http.HttpVersion.encode:(Lio/netty/buffer/ByteBuf;)V
         1: .line 37
            aload 1 /* buf */
            bipush 32
            invokevirtual io.netty.buffer.ByteBuf.writeByte:(I)Lio/netty/buffer/ByteBuf;
            pop
         2: .line 38
            aload 2 /* response */
            invokeinterface io.netty.handler.codec.http.HttpResponse.status:()Lio/netty/handler/codec/http/HttpResponseStatus;
            aload 1 /* buf */
            invokevirtual io.netty.handler.codec.http.HttpResponseStatus.encode:(Lio/netty/buffer/ByteBuf;)V
         3: .line 39
            aload 1 /* buf */
            sipush 3338
            invokestatic io.netty.buffer.ByteBufUtil.writeShortBE:(Lio/netty/buffer/ByteBuf;I)Lio/netty/buffer/ByteBuf;
            pop
         4: .line 40
            return
        end local 2 // io.netty.handler.codec.http.HttpResponse response
        end local 1 // io.netty.buffer.ByteBuf buf
        end local 0 // io.netty.handler.codec.http.HttpResponseEncoder this
      LocalVariableTable:
        Start  End  Slot      Name  Signature
            0    5     0      this  Lio/netty/handler/codec/http/HttpResponseEncoder;
            0    5     1       buf  Lio/netty/buffer/ByteBuf;
            0    5     2  response  Lio/netty/handler/codec/http/HttpResponse;
    Exceptions:
      throws java.lang.Exception
    MethodParameters:
          Name  Flags
      buf       
      response  

  protected void sanitizeHeadersBeforeEncode(io.netty.handler.codec.http.HttpResponse, boolean);
    descriptor: (Lio/netty/handler/codec/http/HttpResponse;Z)V
    flags: (0x0004) ACC_PROTECTED
    Code:
      stack=3, locals=4, args_size=3
        start local 0 // io.netty.handler.codec.http.HttpResponseEncoder this
        start local 1 // io.netty.handler.codec.http.HttpResponse msg
        start local 2 // boolean isAlwaysEmpty
         0: .line 44
            iload 2 /* isAlwaysEmpty */
            ifeq 10
         1: .line 45
            aload 1 /* msg */
            invokeinterface io.netty.handler.codec.http.HttpResponse.status:()Lio/netty/handler/codec/http/HttpResponseStatus;
            astore 3 /* status */
        start local 3 // io.netty.handler.codec.http.HttpResponseStatus status
         2: .line 46
            aload 3 /* status */
            invokevirtual io.netty.handler.codec.http.HttpResponseStatus.codeClass:()Lio/netty/handler/codec/http/HttpStatusClass;
            getstatic io.netty.handler.codec.http.HttpStatusClass.INFORMATIONAL:Lio/netty/handler/codec/http/HttpStatusClass;
            if_acmpeq 4
         3: .line 47
            aload 3 /* status */
            invokevirtual io.netty.handler.codec.http.HttpResponseStatus.code:()I
            getstatic io.netty.handler.codec.http.HttpResponseStatus.NO_CONTENT:Lio/netty/handler/codec/http/HttpResponseStatus;
            invokevirtual io.netty.handler.codec.http.HttpResponseStatus.code:()I
            if_icmpne 7
         4: .line 51
      StackMap locals: io.netty.handler.codec.http.HttpResponseStatus
      StackMap stack:
            aload 1 /* msg */
            invokeinterface io.netty.handler.codec.http.HttpResponse.headers:()Lio/netty/handler/codec/http/HttpHeaders;
            getstatic io.netty.handler.codec.http.HttpHeaderNames.CONTENT_LENGTH:Lio/netty/util/AsciiString;
            invokevirtual io.netty.handler.codec.http.HttpHeaders.remove:(Ljava/lang/CharSequence;)Lio/netty/handler/codec/http/HttpHeaders;
            pop
         5: .line 55
            aload 1 /* msg */
            invokeinterface io.netty.handler.codec.http.HttpResponse.headers:()Lio/netty/handler/codec/http/HttpHeaders;
            getstatic io.netty.handler.codec.http.HttpHeaderNames.TRANSFER_ENCODING:Lio/netty/util/AsciiString;
            invokevirtual io.netty.handler.codec.http.HttpHeaders.remove:(Ljava/lang/CharSequence;)Lio/netty/handler/codec/http/HttpHeaders;
            pop
         6: .line 56
            goto 10
      StackMap locals:
      StackMap stack:
         7: aload 3 /* status */
            invokevirtual io.netty.handler.codec.http.HttpResponseStatus.code:()I
            getstatic io.netty.handler.codec.http.HttpResponseStatus.RESET_CONTENT:Lio/netty/handler/codec/http/HttpResponseStatus;
            invokevirtual io.netty.handler.codec.http.HttpResponseStatus.code:()I
            if_icmpne 10
         8: .line 59
            aload 1 /* msg */
            invokeinterface io.netty.handler.codec.http.HttpResponse.headers:()Lio/netty/handler/codec/http/HttpHeaders;
            getstatic io.netty.handler.codec.http.HttpHeaderNames.TRANSFER_ENCODING:Lio/netty/util/AsciiString;
            invokevirtual io.netty.handler.codec.http.HttpHeaders.remove:(Ljava/lang/CharSequence;)Lio/netty/handler/codec/http/HttpHeaders;
            pop
         9: .line 63
            aload 1 /* msg */
            invokeinterface io.netty.handler.codec.http.HttpResponse.headers:()Lio/netty/handler/codec/http/HttpHeaders;
            getstatic io.netty.handler.codec.http.HttpHeaderNames.CONTENT_LENGTH:Lio/netty/util/AsciiString;
            iconst_0
            invokevirtual io.netty.handler.codec.http.HttpHeaders.setInt:(Ljava/lang/CharSequence;I)Lio/netty/handler/codec/http/HttpHeaders;
            pop
        end local 3 // io.netty.handler.codec.http.HttpResponseStatus status
        10: .line 66
      StackMap locals:
      StackMap stack:
            return
        end local 2 // boolean isAlwaysEmpty
        end local 1 // io.netty.handler.codec.http.HttpResponse msg
        end local 0 // io.netty.handler.codec.http.HttpResponseEncoder this
      LocalVariableTable:
        Start  End  Slot           Name  Signature
            0   11     0           this  Lio/netty/handler/codec/http/HttpResponseEncoder;
            0   11     1            msg  Lio/netty/handler/codec/http/HttpResponse;
            0   11     2  isAlwaysEmpty  Z
            2   10     3         status  Lio/netty/handler/codec/http/HttpResponseStatus;
    MethodParameters:
               Name  Flags
      msg            
      isAlwaysEmpty  

  protected boolean isContentAlwaysEmpty(io.netty.handler.codec.http.HttpResponse);
    descriptor: (Lio/netty/handler/codec/http/HttpResponse;)Z
    flags: (0x0004) ACC_PROTECTED
    Code:
      stack=2, locals=3, args_size=2
        start local 0 // io.netty.handler.codec.http.HttpResponseEncoder this
        start local 1 // io.netty.handler.codec.http.HttpResponse msg
         0: .line 72
            aload 1 /* msg */
            invokeinterface io.netty.handler.codec.http.HttpResponse.status:()Lio/netty/handler/codec/http/HttpResponseStatus;
            astore 2 /* status */
        start local 2 // io.netty.handler.codec.http.HttpResponseStatus status
         1: .line 74
            aload 2 /* status */
            invokevirtual io.netty.handler.codec.http.HttpResponseStatus.codeClass:()Lio/netty/handler/codec/http/HttpStatusClass;
            getstatic io.netty.handler.codec.http.HttpStatusClass.INFORMATIONAL:Lio/netty/handler/codec/http/HttpStatusClass;
            if_acmpne 5
         2: .line 76
            aload 2 /* status */
            invokevirtual io.netty.handler.codec.http.HttpResponseStatus.code:()I
            getstatic io.netty.handler.codec.http.HttpResponseStatus.SWITCHING_PROTOCOLS:Lio/netty/handler/codec/http/HttpResponseStatus;
            invokevirtual io.netty.handler.codec.http.HttpResponseStatus.code:()I
            if_icmpne 4
         3: .line 80
            aload 1 /* msg */
            invokeinterface io.netty.handler.codec.http.HttpResponse.headers:()Lio/netty/handler/codec/http/HttpHeaders;
            getstatic io.netty.handler.codec.http.HttpHeaderNames.SEC_WEBSOCKET_VERSION:Lio/netty/util/AsciiString;
            invokevirtual io.netty.handler.codec.http.HttpHeaders.contains:(Ljava/lang/CharSequence;)Z
            ireturn
         4: .line 82
      StackMap locals: io.netty.handler.codec.http.HttpResponseStatus
      StackMap stack:
            iconst_1
            ireturn
         5: .line 84
      StackMap locals:
      StackMap stack:
            aload 2 /* status */
            invokevirtual io.netty.handler.codec.http.HttpResponseStatus.code:()I
            getstatic io.netty.handler.codec.http.HttpResponseStatus.NO_CONTENT:Lio/netty/handler/codec/http/HttpResponseStatus;
            invokevirtual io.netty.handler.codec.http.HttpResponseStatus.code:()I
            if_icmpeq 9
         6: .line 85
            aload 2 /* status */
            invokevirtual io.netty.handler.codec.http.HttpResponseStatus.code:()I
            getstatic io.netty.handler.codec.http.HttpResponseStatus.NOT_MODIFIED:Lio/netty/handler/codec/http/HttpResponseStatus;
            invokevirtual io.netty.handler.codec.http.HttpResponseStatus.code:()I
            if_icmpeq 9
         7: .line 86
            aload 2 /* status */
            invokevirtual io.netty.handler.codec.http.HttpResponseStatus.code:()I
            getstatic io.netty.handler.codec.http.HttpResponseStatus.RESET_CONTENT:Lio/netty/handler/codec/http/HttpResponseStatus;
            invokevirtual io.netty.handler.codec.http.HttpResponseStatus.code:()I
            if_icmpeq 9
         8: .line 84
            iconst_0
            ireturn
      StackMap locals:
      StackMap stack:
         9: iconst_1
            ireturn
        end local 2 // io.netty.handler.codec.http.HttpResponseStatus status
        end local 1 // io.netty.handler.codec.http.HttpResponse msg
        end local 0 // io.netty.handler.codec.http.HttpResponseEncoder this
      LocalVariableTable:
        Start  End  Slot    Name  Signature
            0   10     0    this  Lio/netty/handler/codec/http/HttpResponseEncoder;
            0   10     1     msg  Lio/netty/handler/codec/http/HttpResponse;
            1   10     2  status  Lio/netty/handler/codec/http/HttpResponseStatus;
    MethodParameters:
      Name  Flags
      msg   

  protected void encodeInitialLine(io.netty.buffer.ByteBuf, io.netty.handler.codec.http.HttpMessage);
    descriptor: (Lio/netty/buffer/ByteBuf;Lio/netty/handler/codec/http/HttpMessage;)V
    flags: (0x1044) ACC_PROTECTED, ACC_BRIDGE, ACC_SYNTHETIC
    Code:
      stack=3, locals=3, args_size=3
         0: .line 1
            aload 0
            aload 1
            aload 2
            checkcast io.netty.handler.codec.http.HttpResponse
            invokevirtual io.netty.handler.codec.http.HttpResponseEncoder.encodeInitialLine:(Lio/netty/buffer/ByteBuf;Lio/netty/handler/codec/http/HttpResponse;)V
            return
      LocalVariableTable:
        Start  End  Slot  Name  Signature
    Exceptions:
      throws java.lang.Exception

  protected void sanitizeHeadersBeforeEncode(io.netty.handler.codec.http.HttpMessage, boolean);
    descriptor: (Lio/netty/handler/codec/http/HttpMessage;Z)V
    flags: (0x1044) ACC_PROTECTED, ACC_BRIDGE, ACC_SYNTHETIC
    Code:
      stack=3, locals=3, args_size=3
         0: .line 1
            aload 0
            aload 1
            checkcast io.netty.handler.codec.http.HttpResponse
            iload 2
            invokevirtual io.netty.handler.codec.http.HttpResponseEncoder.sanitizeHeadersBeforeEncode:(Lio/netty/handler/codec/http/HttpResponse;Z)V
            return
      LocalVariableTable:
        Start  End  Slot  Name  Signature

  protected boolean isContentAlwaysEmpty(io.netty.handler.codec.http.HttpMessage);
    descriptor: (Lio/netty/handler/codec/http/HttpMessage;)Z
    flags: (0x1044) ACC_PROTECTED, ACC_BRIDGE, ACC_SYNTHETIC
    Code:
      stack=2, locals=2, args_size=2
         0: .line 1
            aload 0
            aload 1
            checkcast io.netty.handler.codec.http.HttpResponse
            invokevirtual io.netty.handler.codec.http.HttpResponseEncoder.isContentAlwaysEmpty:(Lio/netty/handler/codec/http/HttpResponse;)Z
            ireturn
      LocalVariableTable:
        Start  End  Slot  Name  Signature
}
Signature: Lio/netty/handler/codec/http/HttpObjectEncoder<Lio/netty/handler/codec/http/HttpResponse;>;
SourceFile: "HttpResponseEncoder.java"