Eccezione socket incomprensibile...

[valerio65xz]

Ciao ragazzi! Ho sviluppato questo semplice codice che mi permette di creare un server socket su una porta a caso... su java funziona perfettamente, su android no, mi va su IOException... qualcuno può darmi una mano? Grazie!

package it.example.provasocket;

import java.io.IOException;
import java.net.ServerSocket;
import java.net.Socket;

import android.os.Bundle;
import android.app.Activity;
import android.view.Menu;
import android.widget.Toast;

public class MainActivity extends Activity {
	
    ServerSocket sSocket = null;
    Socket socket = null;
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        
        try {
        	sSocket = new ServerSocket (4954);
        	socket = sSocket.accept();
        	Toast toast = Toast.makeText(getBaseContext(), "Socket passato", Toast.LENGTH_LONG);
                toast.show();
        }
        catch (IOException e) {
        	Toast toast = Toast.makeText(getBaseContext(), "Socket non passato", Toast.LENGTH_LONG);
                toast.show();
        }
    }

    @Override
    public boolean onCreateOptionsMenu(Menu menu) {
        // Inflate the menu; this adds items to the action bar if it is present.
        getMenuInflater().inflate(R.menu.activity_main, menu);
        return true;
    }
    
}

[valerio65xz]

Nulla? Nessuno può aiutarmi? Sono bloccato così :-(

[freebong]

Nulla? Nessuno può aiutarmi? Sono bloccato così :-(

Posta il logcat


Inviato dal mio HTC Desire usando Androidiani App

[valerio65xz]

Non dice nulla, a parte "skipped x frames! The application may be doing too much work on its main thread" dove x varia ad ogni avvio dell'app.

E poi quando avvio l'emulatore, dal boot del sistema android in poi, mi dice molto spesso "Unexcepted value from nativeGetEnabledTags: 0"

EDIT con il printStackTrace mi da un problema... eccolo:

02-03 15:17:02.910: W/System.err(1007): java.net.SocketException: socket failed: EACCES (Permission denied)
02-03 15:17:02.920: W/System.err(1007): 	at libcore.io.IoBridge.socket(IoBridge.java:583)
02-03 15:17:02.920: W/System.err(1007): 	at java.net.PlainSocketImpl.create(PlainSocketImpl.java:201)
02-03 15:17:02.920: W/System.err(1007): 	at java.net.PlainServerSocketImpl.create(PlainServerSocketImpl.java:38)
02-03 15:17:02.920: W/System.err(1007): 	at java.net.ServerSocket.<init>(ServerSocket.java:98)
02-03 15:17:02.920: W/System.err(1007): 	at java.net.ServerSocket.<init>(ServerSocket.java:69)
02-03 15:17:02.920: W/System.err(1007): 	at it.example.provasocket.MainActivity.onCreate(MainActivity.java:22)
02-03 15:17:02.920: W/System.err(1007): 	at android.app.Activity.performCreate(Activity.java:5104)
02-03 15:17:02.920: W/System.err(1007): 	at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1080)
02-03 15:17:02.920: W/System.err(1007): 	at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2144)
02-03 15:17:02.930: W/System.err(1007): 	at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2230)
02-03 15:17:02.930: W/System.err(1007): 	at android.app.ActivityThread.access$600(ActivityThread.java:141)
02-03 15:17:02.930: W/System.err(1007): 	at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1234)
02-03 15:17:02.930: W/System.err(1007): 	at android.os.Handler.dispatchMessage(Handler.java:99)
02-03 15:17:02.930: W/System.err(1007): 	at android.os.Looper.loop(Looper.java:137)
02-03 15:17:02.930: W/System.err(1007): 	at android.app.ActivityThread.main(ActivityThread.java:5039)
02-03 15:17:02.930: W/System.err(1007): 	at java.lang.reflect.Method.invokeNative(Native Method)
02-03 15:17:02.930: W/System.err(1007): 	at java.lang.reflect.Method.invoke(Method.java:511)
02-03 15:17:02.930: W/System.err(1007): 	at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:793)
02-03 15:17:02.930: W/System.err(1007): 	at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:560)
02-03 15:17:02.940: W/System.err(1007): 	at dalvik.system.NativeStart.main(Native Method)
02-03 15:17:02.940: W/System.err(1007): Caused by: libcore.io.ErrnoException: socket failed: EACCES (Permission denied)
02-03 15:17:02.940: W/System.err(1007): 	at libcore.io.Posix.socket(Native Method)
02-03 15:17:02.940: W/System.err(1007): 	at libcore.io.BlockGuardOs.socket(BlockGuardOs.java:181)
02-03 15:17:02.940: W/System.err(1007): 	at libcore.io.IoBridge.socket(IoBridge.java:568)
02-03 15:17:02.940: W/System.err(1007): 	... 19 more

EDIT2: dovevo aggiungere al file Manifest i permessi di internet, e ora il ServerSocket passa! Ma l'app mi crasha al socket normale, con questo log:

02-03 15:25:57.153: E/Trace(877): error opening trace file: No such file or directory (2)
02-03 15:25:57.163: W/Trace(877): Unexpected value from nativeGetEnabledTags: 0
02-03 15:25:57.163: W/Trace(877): Unexpected value from nativeGetEnabledTags: 0
02-03 15:25:57.175: W/Trace(877): Unexpected value from nativeGetEnabledTags: 0
02-03 15:25:57.353: W/Trace(877): Unexpected value from nativeGetEnabledTags: 0
02-03 15:25:57.353: W/Trace(877): Unexpected value from nativeGetEnabledTags: 0
02-03 15:25:57.983: D/AndroidRuntime(877): Shutting down VM
02-03 15:25:57.983: W/dalvikvm(877): threadid=1: thread exiting with uncaught exception (group=0x40a70930)
02-03 15:25:58.003: E/AndroidRuntime(877): FATAL EXCEPTION: main
02-03 15:25:58.003: E/AndroidRuntime(877): java.lang.RuntimeException: Unable to start activity ComponentInfo{it.example.provasocket/it.example.provasocket.MainActivity}: android.os.NetworkOnMainThreadException
02-03 15:25:58.003: E/AndroidRuntime(877): 	at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2180)
02-03 15:25:58.003: E/AndroidRuntime(877): 	at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2230)
02-03 15:25:58.003: E/AndroidRuntime(877): 	at android.app.ActivityThread.access$600(ActivityThread.java:141)
02-03 15:25:58.003: E/AndroidRuntime(877): 	at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1234)
02-03 15:25:58.003: E/AndroidRuntime(877): 	at android.os.Handler.dispatchMessage(Handler.java:99)
02-03 15:25:58.003: E/AndroidRuntime(877): 	at android.os.Looper.loop(Looper.java:137)
02-03 15:25:58.003: E/AndroidRuntime(877): 	at android.app.ActivityThread.main(ActivityThread.java:5039)
02-03 15:25:58.003: E/AndroidRuntime(877): 	at java.lang.reflect.Method.invokeNative(Native Method)
02-03 15:25:58.003: E/AndroidRuntime(877): 	at java.lang.reflect.Method.invoke(Method.java:511)
02-03 15:25:58.003: E/AndroidRuntime(877): 	at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:793)
02-03 15:25:58.003: E/AndroidRuntime(877): 	at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:560)
02-03 15:25:58.003: E/AndroidRuntime(877): 	at dalvik.system.NativeStart.main(Native Method)
02-03 15:25:58.003: E/AndroidRuntime(877): Caused by: android.os.NetworkOnMainThreadException
02-03 15:25:58.003: E/AndroidRuntime(877): 	at android.os.StrictMode$AndroidBlockGuardPolicy.onNetwork(StrictMode.java:1117)
02-03 15:25:58.003: E/AndroidRuntime(877): 	at libcore.io.BlockGuardOs.accept(BlockGuardOs.java:54)
02-03 15:25:58.003: E/AndroidRuntime(877): 	at java.net.PlainSocketImpl.accept(PlainSocketImpl.java:98)
02-03 15:25:58.003: E/AndroidRuntime(877): 	at java.net.ServerSocket.implAccept(ServerSocket.java:202)
02-03 15:25:58.003: E/AndroidRuntime(877): 	at java.net.ServerSocket.accept(ServerSocket.java:127)
02-03 15:25:58.003: E/AndroidRuntime(877): 	at it.example.provasocket.MainActivity.onCreate(MainActivity.java:23)
02-03 15:25:58.003: E/AndroidRuntime(877): 	at android.app.Activity.performCreate(Activity.java:5104)
02-03 15:25:58.003: E/AndroidRuntime(877): 	at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1080)
02-03 15:25:58.003: E/AndroidRuntime(877): 	at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2144)
02-03 15:25:58.003: E/AndroidRuntime(877): 	... 11 more

googlando ho trovato che dovrei eseguire le operazioni di rete nel metodo doINBackGround() di AsyncTask ... qualcuno potrebbe chiarirmi questa cosa?? Grazie