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POAndroid portscan not working
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copied!<p>I am developing an android port scanner but it doesn't seem to be working. Here's the code for the PortScan class.</p> <pre><code>import java.net.InetAddress; import java.net.InetSocketAddress; import java.net.Socket; import java.net.UnknownHostException; import android.app.Activity; import android.content.Intent; import android.os.Bundle; import android.widget.TextView; public class PortScan extends Activity { String targetHost; /* Starting port for scan */ public int startPort = 1; /* Ending port for scan */ public int endPort = 100; /* Adapter for ListView */ //private PortScanAdapter scanAdapter; /* Intent which invoked this class */ private Intent scanIntent; /* Address of the host to scan */ InetAddress targetAddress; /* Hostname of the target */ String targetHostName; @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); scanIntent = getIntent(); prepareScan(); setContentView(R.layout.port_scan_result); startScan(); } private void prepareScan() { targetHost = scanIntent.getStringExtra("targetAddress"); /* Get the IP Address of the target */ try { targetAddress = InetAddress.getByName(targetHost); } catch(UnknownHostException e) { e.printStackTrace(); } /* Get the hostname of the target */ try { targetHostName = targetAddress.getHostName(); } catch(Exception e) { targetHostName = targetHost; } /*TextView hostName = (TextView)findViewById(R.id.host); hostName.setText(targetHostName); */ } private void startScan() { /* Socket to connect to the remote machine */ Socket portSocket; /* Textview which displays the scanresult */ TextView scanText = (TextView)findViewById(R.id.portscanresult); scanText.setText("Scanning host "+ targetHost + "\n"); for (int i = startPort; i == endPort; i++) { try { portSocket = new Socket(); portSocket.connect(new InetSocketAddress(targetAddress, i), 1000); scanText.append("Target is listening on port "+ i + ": Port Open\n"); portSocket.close(); } catch(Exception exception) { scanText.append("Target is not listening on port "+ i + ": Port Closed\n"); } } } } </code></pre> <p>I am testing this code on an emulator (Android 2.3.3). I don't know whether the issue is with socket connections or TextView. When I run the program, the only output I get is the string before the <code>for</code> loop starts i.e <code>"Scanning host "+ targetHost + "\n"</code> and then nothing happens.</p> <p>Any help will be greatly appreciated.</p> <p>Regards</p>

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