Prefer connection close over keep-alive when both present. (#41)

Author: zarqman

lib/protocol/http/header/connection.rb

@@ -22,7 +22,7 @@ def << value
 				end
 
 				def keep_alive?
-					self.include?(KEEP_ALIVE)
+					self.include?(KEEP_ALIVE) && !close?
 				end
 
 				def close?

test/protocol/http/header/connection.rb

@@ -29,6 +29,13 @@
 		end
 	end
 
+	with "close, keep-alive" do
+		it "should prioritize close over keep-alive" do
+			expect(header).to be(:close?)
+			expect(header).not.to be(:keep_alive?)
+		end
+	end
+	
 	with "upgrade" do
 		it "should indiciate connection can be upgraded" do
 			expect(header).to be(:upgrade?)