Add bin and edit workflow

bin/gems/em-websocket-0.5.3/lib/em-websocket/masking04.rb

@@ -0,0 +1,37 @@
+module EventMachine
+  module WebSocket
+    class MaskedString < String
+      # Read a 4 bit XOR mask - further requested bytes will be unmasked
+      def read_mask
+        if respond_to?(:encoding) && encoding.name != "ASCII-8BIT"
+          raise "MaskedString only operates on BINARY strings"
+        end
+        raise "Too short" if bytesize < 4 # TODO - change
+        @masking_key = String.new(self[0..3])
+      end
+
+      # Removes the mask, behaves like a normal string again
+      def unset_mask
+        @masking_key = nil
+      end
+
+      def getbyte(index)
+        if defined?(@masking_key) && @masking_key
+          masked_char = super
+          masked_char ? masked_char ^ @masking_key.getbyte(index % 4) : nil
+        else
+          super
+        end
+      end
+
+      def getbytes(start_index, count)
+        data = ''
+        data.force_encoding('ASCII-8BIT') if data.respond_to?(:force_encoding)
+        count.times do |i|
+          data << getbyte(start_index + i)
+        end
+        data
+      end
+    end
+  end
+end