Ok, I just happened to see this same error in my log today.
"10-12 16:16:42.351: ERROR/NetworkStateTracker(50): Can't set tcp
buffer sizes:java.io.FileNotFoundException: /sys/kernel/ipv4/
tcp_rmem_min"
But I also noticed in the same log PRIOR to this error, the well known
permissions related "java.net.SocketException: unknown error" message.
This was a new app I was building today, and I simply forgot the "
<uses-permission android:name="android.permission.INTERNET" /> "
permission, initially. When I ADD that permission to the manifest, I
no longer see the "tcp buffer sizes FileNotFoundException".
Maybe this is just a perms issue for you guys too?
In the new SDK you have to add the INERNET permission to anything that
makes a network call, and the error message you get if you don't is
completely unintuitive "SocketException" (maybe on purpose, it is
permissions?). Check your permissions and see if that is related.
On Oct 8, 9:32 am, "[EMAIL PROTECTED]"
<[EMAIL PROTECTED]> wrote:
> Actually, i have the same problem.
> I think the problem come to the :80. In fact, when I tried, in a
> browser, the URL with the port (:80) it doesn't work. Without, It
> works.
>
> But, the port number is put automatically, so, i don't know what to
> do.
>
> Somebody has an idea??
>
> (sorry about my English, I'm French)
>
> On 8 oct, 13:01, Charlie Collins <[EMAIL PROTECTED]> wrote:
>
> > That error seems more involved than potentially just what your
> > application is doing. Can you browse to that URL (or others) from the
> > browser on the emulator? Leave your app out of the equation and make
> > sure the platform is working as you expect first. Might need to make
> > sure you have a clean Android install and -wipe-data when you start.
> > Not sure, but "NetworkStateTracker(52): Can't set tcp buffer
> > sizes:java.io.FileNotFoundException: /sys/kernel/ipv4/tcp_rmem_min"
> > sounds like Android itself is not happy (as opposed to just an app
> > error).
>
> > Also, that looks like some of my code from the Manning book Unlocking
> > Android. If it is, that hasn't been updated yet to work in the 1.0
> > SDK so you may get various errors unless you are running it on m5, or
> > you have updated it. I am in the process right now of updating the
> > code and the text for the book - to get everything up to 1.0. I am
> > actually re-working that particular sample code project this week, if
> > you want to send me an email I can zip it and send it to you when I am
> > done (it will eventually get update on the Manning MEAP site too, but
> > will take longer).
>
> > On Oct 7, 10:23 am, nichojo <[EMAIL PROTECTED]> wrote:
>
> > > I have this:
>
> > > public void onCreate(Bundle savedInstanceState) {
> > > super.onCreate(savedInstanceState);
>
> > > /* Create a new TextView to display the parsing result later.
> > > */
> > > TextView tv = new TextView(this);
> > > try
> > > {
> > > /* Create a URL we want to load some xml-data from. */
> > > String queryString = "http://weather.yahooapis.com/
> > > forecastrss?p=36832";
> > > /* Replace blanks with HTML-Equivalent. */
> > > URL url = new URL(queryString.replace(" ", "%20"));
>
> > > /* Get a SAXParser from the SAXPArserFactory. */
> > > SAXParserFactory spf = SAXParserFactory.newInstance();
> > > SAXParser sp = spf.newSAXParser();
>
> > > /* Get the XMLReader of the SAXParser we created. */
> > > XMLReader xr = sp.getXMLReader();
> > > /* Create a new ContentHandler and apply it to the XML-
> > > Reader */
> > > WeatherHandler myWeatherHandler = new WeatherHandler();
> > > xr.setContentHandler(myWeatherHandler);
>
> > > /* Parse the xml-data from our URL. */
> > > xr.parse(new InputSource(url.openStream()));
> > > /* Parsing has finished. */
> > > tv.setText(myWeatherHandler.getInfo());
>
> > > } catch (Exception e)
> > > {
> > > tv.setText("Error: " + e.getMessage());
> > > Log.e(MY_DEBUG_TAG, "WeatherQueryError", e);
> > > }
> > > /* Display the TextView. */
> > > setContentView(tv);
> > > }
>
> > > For some reason I get a bunch network errors:
>
> > > 10-07 14:22:21.702: ERROR/NetworkStateTracker(52): Can't set tcp
> > > buffer sizes:java.io.FileNotFoundException: /sys/kernel/ipv4/
> > > tcp_rmem_min
> > > 10-07 14:22:22.462: ERROR/AUWeather(156): WeatherQueryError
> > > 10-07 14:22:22.462: ERROR/AUWeather(156):
> > > java.net.UnknownHostException:Hostisunresolved:
> > > weather.yahooapis.com:80
> > > 10-07 14:22:22.462: ERROR/AUWeather(156): at
> > > java.net.Socket.connect(Socket.java:928)
>
> > > I have added the internet permission and this code is almost line by
> > > line just like the example. I am not behind a proxy either. Any ideas?
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