Re: [android-developers] Re: First HTTP/S requests are slow. [Android 1.5]

well this does seem to point to a long initialisation period for the
Apache library. i don't have anything informed to suggest on the
protocol error - maybe the Apache library supports more SSL protocols
than the regular Java network library? dunno. checking versions etc
couldn't hurt.

there's a bunch of redirects going on with that
https://mip.sunrise.ch URL, btw. something somewhere might be falling
over that.

hth

>Yeah probably it has something to do with all the initialization
>stuff...I just tried *not* using the Apache HttpClient, with the
>following code:
>
>String myHttpsUrl = "<https://mip.sunrise.ch/>https://mip.sunrise.ch";
>URL url = new URL(myHttpsUrl);
>URLConnection urlConnection = url.openConnection();
>
>BufferedReader br = new BufferedReader(new
>InputStreamReader(ucon.getInputStream()));
>String line;
>StringBuilder htmlContent = new StringBuilder();
>while ((line = br.readLine()) != null) {
> htmlContent.append(line);
>}
>
>(I'm reading the whole content just to make sure my request has been
>executed and fetched..).
>
>Anyway....it seems much faster!! (first request around 2 seconds,
>compared to the HttpClient's 6, 10 or 20 seconds).
>
>However there is a problem: with the current https url it actually
>doesn't work (it worked for other https addresses). I get back the
>following error (with the url
>"<https://mip.sunrise.ch/>https://mip.sunrise.ch"):
>
>java.io.IOException: SSL handshake failure: Failure in SSL library,
>usually a protocol error
>error:140770FC:SSL routines:SSL23_GET_SERVER_HELLO:unknown protocol
>(external/openssl/ssl/s23_clnt.c:585 0xaf589f78:0x00000000)
> at
>org.apache.harmony.xnet.provider.jsse.OpenSSLSocketImpl.nativeconnect(Native
>Method)
> at
>org.apache.harmony.xnet.provider.jsse.OpenSSLSocketImpl.startHandshake(OpenSSLSocketImpl.java:308)
> at
>org.apache.harmony.luni.internal.net.www.protocol.http.HttpConnection.getSecureSocket(HttpConnection.java:173)
> at
>org.apache.harmony.luni.internal.net.www.protocol.https.HttpsURLConnection$HttpsEngine.connect(HttpsURLConnection.java:408)
> at
>org.apache.harmony.luni.internal.net.www.protocol.http.HttpURLConnection.sendRequest(HttpURLConnection.java:1227)
> at
>org.apache.harmony.luni.internal.net.www.protocol.http.HttpURLConnection.doRequestInternal(HttpURLConnection.java:1554)
> at
>org.apache.harmony.luni.internal.net.www.protocol.http.HttpURLConnection.doRequest(HttpURLConnection.java:1547)
> at
>org.apache.harmony.luni.internal.net.www.protocol.http.HttpURLConnection.getInputStream(HttpURLConnection.java:1055)
> at
>org.apache.harmony.luni.internal.net.www.protocol.https.HttpsURLConnection.getInputStream(HttpsURLConnection.java:257)
>
>It seems like an ssl version error...mmmm....
>Maybe I have to specify explicitly this version somewhere? Or maybe
>some certificates? :S
>
>If anyone has an idea please let me know :)
>
>
>Thanks everyone!
>Yuvi
>
>On Tue, Jan 26, 2010 at 8:29 PM, Jason Proctor
><<mailto:jason.android.lists@gmail.com>jason.android.lists@gmail.com>
>wrote:
>
>SSL requires a good chunk of crypto code. maybe its initialisation &
>code-loading time is causing the delay on first use?
>
>one way to find out is to write something as bare-bones as possible
>(ie without the Apache HTTP library, which is large and complex) and
>profile it to see where the time is going.
>
>
>
>
>Hi
>
>we're experiencing the same thing - pretty much identical code
>initial connection can take up to 30secs but subsequent connections
>are only a sec or two
>
>have reproduced on both 1.5 and 2.0 emulators as well as on devices
>HTC Hero, Motoral Cliq and Droid
>
>if we change the URL back to HTTP behavior is expected i.e a second or
>two
>
>Ronan
>
>On Jan 23, 11:31 pm, Yuvi
><<mailto:yuvidr...@gmail.com>yuvidr...@gmail.com> wrote:
>
> Hi!
>
> I'm developing my first android app, which needs to make some http and https
> requests.
> I'm using the apache HttpClient. So far everything works fine...but I
> noticed something strange:
> almost every time I start the app, the first request is taking really a long
> time, while the next requests take much less. I tried executing the same
> request several times in a row, and with the same result.
>
> Here's part of the code I use to make an http request:
>
> HttpParams httpParams = new BasicHttpParams();
> HttpConnectionParams.setConnectionTimeout(httpParams, 30000);
> HttpConnectionParams.setSoTimeout(httpParams, 30000);
> client = new DefaultHttpClient(httpParams);
>
> try {
> HttpGet getRequest = new HttpGet
>("<https://mip.sunrise.ch>https://mip.sunrise.ch");
> HttpResponse response = client.execute(getRequest);
> // ....
>
> } catch (Exception e) { }
>
> I tested the app on the various versions of the emulator, and on the htc
> hero (android 1.5). With the emulator with android 2.0 it seems that problem
> doesn't occur...mmm? hehe
>
> Someone has an idea of what am I doing wrong?
>
> Thanks!!
> Yuvi
>
>
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