WebSocket IsFinal flad added

Author: honfika

src/Titanium.Web.Proxy/WebSocketDecoder.cs

@@ -38,6 +38,7 @@ public IEnumerable<WebSocketFrame> Decode(byte[] data, int offset, int count)
                 }
 
                 var opCode = (WebsocketOpCode)(data1[0] & 0xf);
+                bool isFinal = (data1[0] & 0x80) != 0;
                 byte b = data1[1];
                 long size = b & 0x7f;
 
@@ -61,11 +62,6 @@ public IEnumerable<WebSocketFrame> Decode(byte[] data, int offset, int count)
                     }
                 }
 
-                if (size < 0)
-                {
-                    ;
-                }
-
                 if (data1.Length < idx + size)
                 {
                     break;
@@ -109,7 +105,7 @@ public IEnumerable<WebSocketFrame> Decode(byte[] data, int offset, int count)
                 }
 
                 var frameData = buffer.Slice(idx, (int)size);
-                var frame = new WebSocketFrame { Data = frameData, OpCode = opCode };
+                var frame = new WebSocketFrame { IsFinal = isFinal, Data = frameData, OpCode = opCode };
                 yield return frame;
 
                 buffer = buffer.Slice((int)(idx + size));

src/Titanium.Web.Proxy/WebSocketFrame.cs

@@ -5,6 +5,8 @@ namespace Titanium.Web.Proxy
 {
     public class WebSocketFrame
     {
+        public bool IsFinal { get; internal set; }
+        
         public WebsocketOpCode OpCode { get; internal set; }
 
         public ReadOnlyMemory<byte> Data { get; internal set; }