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# 옵저버 패턴 1부 - 패턴 소개
* 다수의 객체가 특정 객체 상태 변화를 감지하고 알림을 받는 패턴
* 특정 객체 상태 변화에 따라 다른 반응을 해야할 때 사용할 수 있다
* 발행(publish)-구독(subscribe) 패턴을 구현할 수 있다
## Before
```java
public class Client {
pub…
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Hey there, I'm using this library for socket.IO but I can't because in SocketIORequest it does:
super(Uri.parse(uri + (query == null ? "" : "?" + query)).buildUpon().encodedPath("/socket.io/1/").bui…
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Nowadays, when writing applications, I tend to have `debug=true` set primarily in order to get the unification errors displayed. Take the following error message for example:
```
examples/sessions…
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ChatServerクラスはmainメソッドを持つ．
新たにクライアントが接続してくるのを待つ．
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Using the latest library and firmware when i run the chatserver sample it works perfectly on an UNO Wifi for the first connection if I then close and open a new connection it does not respond. If i th…
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```
What steps will reproduce the problem?
1. Chatserver works but not ingame
2. GameServer and chatserver are properly connected
What is the expected output? What do you see instead?
I just notic…
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```
What steps will reproduce the problem?
1. Chatserver works but not ingame
2. GameServer and chatserver are properly connected
What is the expected output? What do you see instead?
I just notic…
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I have setup the OptionKeepAlive in both TcpServer and TcpClient, the client successfully connect to the server.
However, when I turn off the router to test the keepalive feature, after the time (…
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When calling Server.close(), the thread will hang anywhere from a few seconds to 10+ minutes. On older, slower computers, the hang can last over half an hour. Client.close() has a similar problem but …
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As I was building a test suite for Issue #1814, I noticed a minor incongruity.
Medley includes functions `DRAWPOLYGON` and `DRAWCIRCLE`, and corresponding functions `FILLPOLYGON` and `FILLCIRCLE`. …