Programming Forums > Application Development > Java

xdev · Feb 11th, 2006, 9:22 AM

hi! i'm doing a small app for mobile devices, with j2me, netbeans5.0+mobility pack.
the problem is

String url = "http://www.google.ro/";
try {
        HttpConnection httpConnection = 
                         (HttpConnection) Connector.open(url, Connector.READ);
        if (httpConnection.getResponseCode() == HttpConnection.HTTP_OK) {
                  // i do something around here
            }
            // doing some more of something
} catch (Exception e) {
    e.printStackTrace();
}

javax.microedition.io.ConnectionNotFoundException: TCP open

this is what i get when the program reaches httpConnection.getResponseCode() . i read that it's because a connection could not be established, or somethink like this, maybe because of a firewall or something else.

well, it so happens i connect to the internet through a proxy. but i tried starting the app with parameters like:
-Dhttp.proxyHost=192.168.xxx.xxx -Dhttp.proxyPort=8080

yet it still doesn't work. i get the same error.
what am i doing wrong? please help.

thank you

xdev · Feb 11th, 2006, 12:04 PM

i hope you understand.... what i mean is: i'm sure this code will work properly on a real cellphone, but i need to test it first, on a emulator

unfortunately my computer does not access the internet directly, but through a proxy. how can i test it so that i don't get that annoying error?
thanks again

xdev · Feb 12th, 2006, 5:32 AM

Help Me Please

Feb 11th, 2006, 9:22 AM	#1
xdev Newbie Join Date: Feb 2006 Posts: 3 Rep Power: 0	J2ME network error hi! i'm doing a small app for mobile devices, with j2me, netbeans5.0+mobility pack. the problem is (Toggle Plain Text) String url = "http://www.google.ro/"; try { HttpConnection httpConnection = (HttpConnection) Connector.open(url, Connector.READ); if (httpConnection.getResponseCode() == HttpConnection.HTTP_OK) { // i do something around here } // doing some more of something } catch (Exception e) { e.printStackTrace(); } String url = "http://www.google.ro/"; try { HttpConnection httpConnection = (HttpConnection) Connector.open(url, Connector.READ); if (httpConnection.getResponseCode() == HttpConnection.HTTP_OK) { // i do something around here } // doing some more of something } catch (Exception e) { e.printStackTrace(); } javax.microedition.io.ConnectionNotFoundException: TCP open this is what i get when the program reaches httpConnection.getResponseCode() . i read that it's because a connection could not be established, or somethink like this, maybe because of a firewall or something else. well, it so happens i connect to the internet through a proxy. but i tried starting the app with parameters like: -Dhttp.proxyHost=192.168.xxx.xxx -Dhttp.proxyPort=8080 yet it still doesn't work. i get the same error. what am i doing wrong? please help. thank you

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Feb 11th, 2006, 12:04 PM	#2
xdev Newbie Join Date: Feb 2006 Posts: 3 Rep Power: 0	i hope you understand.... what i mean is: i'm sure this code will work properly on a real cellphone, but i need to test it first, on a emulator unfortunately my computer does not access the internet directly, but through a proxy. how can i test it so that i don't get that annoying error? thanks again

Feb 12th, 2006, 5:32 AM	#3
xdev Newbie Join Date: Feb 2006 Posts: 3 Rep Power: 0	Help Me Please

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Programming Forums > Application Development > Java

J2ME network error