According to technical guide from Oracle Java, we should consume HttpURLConnection's error stream when IOException thrown
http://docs.oracle.com/javase/6/docs/technotes/guides/net/http-keepalive.html What can you do to help with Keep-Alive? Do not abandon a connection by ignoring the response body. Doing so may results in idle TCP connections. That needs to be garbage collected when they are no longer referenced. If getInputStream() successfully returns, read the entire response body. When calling getInputStream() from HttpURLConnection, if an IOException occurs, catch the exception and call getErrorStream() to get the response body (if there is any). Reading the response body cleans up the connection even if you are not interested in the response content itself. But if the response body is long and you are not interested in the rest of it after seeing the beginning, you can close the InputStream. But you need to be aware that more data could be on its way. Thus the connection may not be cleared for reuse. Here's a code example that complies to the above recommendation: Here's the code example try { URL a = new URL(args[0]); URLConnection urlc = a.openConnection(); is = conn.getInputStream(); int ret = 0; while ((ret = is.read(buf)) > 0) { processBuf(buf); } // close the inputstream is.close();} catch (IOException e) { try { respCode = ((HttpURLConnection)conn).getResponseCode(); es = ((HttpURLConnection)conn).getErrorStream(); int ret = 0; // read the response body while ((ret = es.read(buf)) > 0) { processBuf(buf); } // close the errorstream es.close(); } catch(IOException ex) { // deal with the exception }} Does this applicable to Android platform? As I don't see such technique in most of the Android code example. -- You received this message because you are subscribed to the Google Groups "Android Developers" group. To post to this group, send email to [email protected] To unsubscribe from this group, send email to [email protected] For more options, visit this group at http://groups.google.com/group/android-developers?hl=en --- You received this message because you are subscribed to the Google Groups "Android Developers" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. For more options, visit https://groups.google.com/d/optout.
