[웹소켓] 번역, line22(#883)

Author: wooju-me

5-network/11-websocket/article.md

@@ -19,7 +19,7 @@ The `wss://` protocol is not only encrypted, but also more reliable.
 
 That's because `ws://` data is not encrypted, visible for any intermediary. Old proxy servers do not know about WebSocket, they may see "strange" headers and abort the connection.
 
-On the other hand, `wss://` is WebSocket over TLS, (same as HTTPS is HTTP over TLS), the transport security layer encrypts the data at sender and decrypts at the receiver. So data packets are passed encrypted through proxies. They can't see what's inside and let them through.
+반면 `wss://`는 TSL(전송 계층 보안(Transport Layer Security))이라는 보안 계층을 통과해 전달되므로 송신자 측에서 데이터가 암호화되고, 복호화는 수신자 측에서 이뤄지게 됩니다. 따라서 데이터가 담긴 패킷은 암호화된 상태로 프락시 서버를 통과하므로 프락시 서버는 패킷 내부를 볼 수 없게 됩니다. 
 ```
 
 Once the socket is created, we should listen to events on it. There are totally 4 events: