use ByteString as container for websocket text message (#1864)

actix-http/src/ws/proto.rs

@@ -2,21 +2,27 @@ use std::convert::{From, Into};
 use std::fmt;
 
 use self::OpCode::*;
-/// Operation codes as part of rfc6455.
+/// Operation codes as part of RFC6455.
 #[derive(Debug, Eq, PartialEq, Clone, Copy)]
 pub enum OpCode {
     /// Indicates a continuation frame of a fragmented message.
     Continue,
+
     /// Indicates a text data frame.
     Text,
+
     /// Indicates a binary data frame.
     Binary,
+
     /// Indicates a close control frame.
     Close,
+
     /// Indicates a ping control frame.
     Ping,
+
     /// Indicates a pong control frame.
     Pong,
+
     /// Indicates an invalid opcode was received.
     Bad,
 }