Hey guys,
This is my first post to the Android Developers group. I have been
working with HTTP communication in the Android SDK and have noticed
that calls to a web service through my app are very slow (taking
800+ms on high speed wifi). They take less than 100ms if I call the
web service through the phone's browser. I am developing on a Google
Nexus One. The size of the data returned is very small, <1K. I have
tried enabling gzip compression, and that helps slightly but I assume
there is another problem at hand. I have tried using SOAP with the
ksoap2-android library, as well as making things simple using
HttpClient and InputStreamReader. Below is my code for the fastest I
can make the app perform; using no SOAP, and using GZIP compression. I
apologize for the lengthy code -- I think all of it is beneficial for
determining the best way to make this request and response happen
faster.
[code]
public String GetRest()
{
long startTime = System.currentTimeMillis();
String result = "";
Log.v("time", "Beginning rest: " + (System.currentTimeMillis() -
startTime) + "ms");
try
{
HttpClient client = new DefaultHttpClient();
HttpGet request = new HttpGet("https://usad.enlyght.com/ws/
AndroidService.asmx/GetWebServiceVersion");
request.addHeader("Accept-Encoding", "gzip");
Log.v("time", "Before call: " + (System.currentTimeMillis() -
startTime) + "ms");
HttpResponse response = client.execute(request);
InputStream instream = response.getEntity().getContent();
Header contentEncoding = response.getFirstHeader("Content-
Encoding");
if (contentEncoding != null &&
contentEncoding.getValue().equalsIgnoreCase("gzip")) {
instream = new GZIPInputStream(instream);
}
InputStreamReader isreader = new InputStreamReader(instream);
BufferedReader reader = new BufferedReader(isreader);
StringWriter sw = new StringWriter();
String read;
while ((read = reader.readLine()) != null) {
result += read;
}
client.getConnectionManager().shutdown();
}
catch (Exception e) {}
Log.v("time", "End rest: " + (System.currentTimeMillis() -
startTime) + "ms");
return result;
}
[/code]
Regards,
Adam Smith
Norsoft
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