Unexpected status line exception using HttpUrlConnection in android?

Question

I have developed an Android app which sends/gets some data to/from server. The app works fine, however, on Android KitKat 4.4.2 the app throws an exception:

"java.net.ProtocolException: Unexpected status line: ��".

Please tell me how to get rid of it and why this is happening

HttpURLConnection.setFollowRedirects(true);
    con = (HttpURLConnection) new URL(url[0]).openConnection();
    con.setRequestMethod("GET");
    con.setConnectTimeout(10000);

score 4 · Answer 1 · answered Jun 01 '15 at 15:48

4

I was having same problem. Looks that was due to recycling connection.

con.setRequestProperty("Connection", "close");

did the trick (Or use addHeader, if still using Apache Http)

answered Jun 01 '15 at 15:48

Flavio Battocchio

65
2

score 1 · Answer 2 · answered Mar 10 '15 at 12:51

1

Maybe OkHttp solves your problem:

http://square.github.io/okhttp/

You can try out OkHttp without rewriting your network code. The okhttp-urlconnection module implements the familiar java.net.HttpURLConnection API and the okhttp-apache module implements the Apache HttpClient API.

Note: OkHttp is standard in Android 5. So why not use it in lower versions :)

answered Mar 10 '15 at 12:51

Patrick Dorn

756
8
13

Why this problem occur ? – Tarun Sharma Mar 10 '15 at 13:01
Maybe your Server response is not correct. See: http://stackoverflow.com/questions/28336457/java-net-protocolexception-unexpected-status-line-http-1-1-422%EF%BF%BD%EF%BF%BDunprocessable – Patrick Dorn Mar 10 '15 at 13:28
Response of server is some sort of strange string which my app is not able to read when i catch the exception app gets crashed.. – Tarun Sharma Mar 10 '15 at 15:12

Unexpected status line exception using HttpUrlConnection in android?

2 Answers2