I am trying to the screenshot of the LG TV. Running nmap gives me the following output.
Discovered open port 18181/tcp on xx.xx.xx.xxx
Increased max_successful_tryno for xx.xx.xx.xxx to 1 (packet drop)
Discovered open port 9998/tcp on xx.xx.xx.xxx
Discovered open port 9955/tcp on xx.xx.xx.xxx
Discovered open port 1998/tcp on xx.xx.xx.xxx
Discovered open port 3001/tcp on xx.xx.xx.xxx
Discovered open port 1267/tcp on xx.xx.xx.xxx
Discovered open port 1512/tcp on xx.xx.xx.xxx
Discovered open port 3000/tcp on xx.xx.xx.xxx
Discovered open port 1812/tcp on xx.xx.xx.xxx
Discovered open port 1552/tcp on xx.xx.xx.xxx
Discovered open port 36866/tcp on xx.xx.xx.xxx
Now, How i can get the screen shot of the current program running in the TV.
Thank you
Wondering How, i can get the screenshot of the TV ?
This code is used to turnOff the TV sending message via WebSocket
public static void turnOff(WebSocketClient ws) throws JSONException
{
JSONObject headers = new JSONObject();
JSONObject payload = new JSONObject();
try {
headers.put("type", "request");
headers.put("id", 10001);
headers.put("uri", "ssap://system/turnOff");
} catch (JSONException e) {
}
headers.put("payload", payload);
ws.send(headers.toString());
System.out.println(headers.toString());
}
This is the code that connects to the WebSocket in the TV
ws = new WebSocketClient(URI.create("ws://10.10.10.111:3000")) {
#Override
public void onOpen(ServerHandshake arg0) {
System.out.println("Connected ws://10.10.10.111:9000");
try {
// sendPin(ws);
register(ws);
} catch (JSONException ex) {
Logger.getLogger(LGWebTVClient.class.getName()).log(Level.SEVERE, null, ex);
}
}
#Override
public void onMessage(String arg0) {
try {
System.out.println(arg0);
JSONObject message = new JSONObject();
try {
message = new JSONObject(arg0);
} catch (JSONException ex) {
Logger.getLogger(LGWebTVClient.class.getName()).log(Level.SEVERE, null, ex);
}
String type = message.optString("type");
try
{
String pin ="";
for (int i = 0; i < 9; i++)
{
if(type.equals("response"))
{
String id = message.optString("id");
if(id.equals("152463"))
{
Scanner scanner = new Scanner(new InputStreamReader(System.in));
System.out.println("Enter the PIN: ");
int number = scanner.nextInt();
System.out.println("Integer input: " + number);
pin = number+"";
if(number < 10)
pin ="00"+pin;
if(number < 99 && number > 9)
pin ="0"+pin;
if(i > 99)
pin =""+pin;
System.out.println("Sending PIN");
sendPin(ws,pin);
break;
}
}
}
}
catch (JSONException ex)
{
}
if(type.equals("registered"))
{
System.out.println("Registerd");
secondScreen(ws);
}
You could convert the HTML content into a canvas, then save it as a file.
However, this only renders HTML and CSS directly. It cannot capture anything outside of that.
Or, it might be possible to use getUserMedia() to take a screenshot of everything, and save that as a file.
Related
This is re-worded from a previous question (which was probably a bit unclear).
I want to download a text file via FTP from a remote server, read the contents of the text file into a string and then discard the file. I don't need to actually save the file.
I am using the Apache Commons library so I have:
import org.apache.commons.net.ftp.FTPClient;
Can anyone help please, without simply redirecting me to a page with lots of possible answers on?
Not going to do the work for you, but once you have your connection established, you can call retrieveFile and pass it an OutputStream. You can google around and find the rest...
FTPClient ftp = new FTPClient();
...
ByteArrayOutputStream myVar = new ByteArrayOutputStream();
ftp.retrieveFile("remoteFileName.txt", myVar);
ByteArrayOutputStream
retrieveFile
Normally I'd leave a comment asking 'What have you tried?'. But now I'm feeling more generous :-)
Here you go:
private void ftpDownload() {
FTPClient ftp = null;
try {
ftp = new FTPClient();
ftp.connect(mServer);
try {
int reply = ftp.getReplyCode();
if (!FTPReply.isPositiveCompletion(reply)) {
throw new Exception("Connect failed: " + ftp.getReplyString());
}
if (!ftp.login(mUser, mPassword)) {
throw new Exception("Login failed: " + ftp.getReplyString());
}
try {
ftp.enterLocalPassiveMode();
if (!ftp.setFileType(FTP.BINARY_FILE_TYPE)) {
Log.e(TAG, "Setting binary file type failed.");
}
transferFile(ftp);
} catch(Exception e) {
handleThrowable(e);
} finally {
if (!ftp.logout()) {
Log.e(TAG, "Logout failed.");
}
}
} catch(Exception e) {
handleThrowable(e);
} finally {
ftp.disconnect();
}
} catch(Exception e) {
handleThrowable(e);
}
}
private void transferFile(FTPClient ftp) throws Exception {
long fileSize = getFileSize(ftp, mFilePath);
InputStream is = retrieveFileStream(ftp, mFilePath);
downloadFile(is, buffer, fileSize);
is.close();
if (!ftp.completePendingCommand()) {
throw new Exception("Pending command failed: " + ftp.getReplyString());
}
}
private InputStream retrieveFileStream(FTPClient ftp, String filePath)
throws Exception {
InputStream is = ftp.retrieveFileStream(filePath);
int reply = ftp.getReplyCode();
if (is == null
|| (!FTPReply.isPositivePreliminary(reply)
&& !FTPReply.isPositiveCompletion(reply))) {
throw new Exception(ftp.getReplyString());
}
return is;
}
private byte[] downloadFile(InputStream is, long fileSize)
throws Exception {
byte[] buffer = new byte[fileSize];
if (is.read(buffer, 0, buffer.length)) == -1) {
return null;
}
return buffer; // <-- Here is your file's contents !!!
}
private long getFileSize(FTPClient ftp, String filePath) throws Exception {
long fileSize = 0;
FTPFile[] files = ftp.listFiles(filePath);
if (files.length == 1 && files[0].isFile()) {
fileSize = files[0].getSize();
}
Log.i(TAG, "File size = " + fileSize);
return fileSize;
}
You can just skip the download to local filesystem part and do:
FTPClient ftpClient = new FTPClient();
try {
ftpClient.connect(server, port);
ftpClient.login(user, pass);
ftpClient.enterLocalPassiveMode();
ftpClient.setFileType(FTP.BINARY_FILE_TYPE);
InputStream inputStream = ftpClient.retrieveFileStream("/folder/file.dat");
BufferedReader reader = new BufferedReader(new InputStreamReader(inputStream, "Cp1252"));
while(reader.ready()) {
System.out.println(reader.readLine()); // Or whatever
}
inputStream.close();
} catch (IOException ex) {
ex.printStackTrace();
} finally {
try {
if (ftpClient.isConnected()) {
ftpClient.logout();
ftpClient.disconnect();
}
} catch (IOException ex) {
ex.printStackTrace();
}
}
I am trying to find the IP address of connected network in windows phone. I was successful to find out the IP address of connected Wi-Fi. I have used the following class to find the IP address.
public class MyIPAddress
{
Action<IPAddress> FoundCallback;
UdpAnySourceMulticastClient MulticastSocket;
const int PortNumber = 50000; // pick a number, any number
string MulticastMessage = "FIND-MY-IP-PLEASE" + new Random().Next().ToString();
public void Find(Action<IPAddress> callback)
{
FoundCallback = callback;
MulticastSocket = new UdpAnySourceMulticastClient(IPAddress.Parse("239.255.255.250"), PortNumber);
MulticastSocket.BeginJoinGroup((result) =>
{
try
{
MulticastSocket.EndJoinGroup(result);
GroupJoined(result);
}
catch (Exception ex)
{
// Debug.WriteLine("EndjoinGroup exception {0}", ex.Message);
// This can happen eg when wifi is off
FoundCallback(null);
}
},
null);
}
void callback_send(IAsyncResult result)
{
}
byte[] MulticastData;
bool keepsearching;
void GroupJoined(IAsyncResult result)
{
MulticastData = Encoding.UTF8.GetBytes(MulticastMessage);
keepsearching = true;
MulticastSocket.BeginSendToGroup(MulticastData, 0, MulticastData.Length, callback_send, null);
while (keepsearching)
{
try
{
byte[] buffer = new byte[MulticastData.Length];
MulticastSocket.BeginReceiveFromGroup(buffer, 0, buffer.Length, DoneReceiveFromGroup, buffer);
}
catch (Exception ex)
{
// Debug.WriteLine("Stopped Group read due to " + ex.Message);
keepsearching = false;
}
}
}
void DoneReceiveFromGroup(IAsyncResult result)
{
string str = "";
IPEndPoint where;
int responselength = MulticastSocket.EndReceiveFromGroup(result, out where);
byte[] buffer = result.AsyncState as byte[];
if (responselength == MulticastData.Length && buffer.SequenceEqual(MulticastData))
{
str = where.Address.ToString();
keepsearching = false;
FoundCallback(where.Address);
}
Console.WriteLine(str);
}
}
So by using the above class I can find the IP address of connected Wi-Fi. Now I am try to find the address of network which is connected by Data Connection. In my windows phone I goto Settings --> System --> Cellular and turn on data connection on.
How can I get the IP address of Cellular Network(Data Connection)? Is there any API for that?
you can try this ....
it will work fine for many networks unlike your code which will work only on wifi network due to multicast IP
it will provide you the ip address of the phone ...
public static IPAddress Find()
{
List<string> ipAddresses = new List<string>();
var hostnames = NetworkInformation.GetHostNames();
foreach (var hn in hostnames)
{
if (hn.IPInformation != null)
{
string ipAddress = hn.DisplayName;
ipAddresses.Add(ipAddress);
}
}
IPAddress address = IPAddress.Parse(ipAddresses[0]);
return address;
}
I am trying to get the IP address of networks like Wi-Fi,Data Network. I use the following class to find the IP.
public class MyIPAddress
{
Action<IPAddress> FoundCallback;
UdpAnySourceMulticastClient MulticastSocket;
const int PortNumber = 50000; // pick a number, any number
string MulticastMessage = "FIND-MY-IP-PLEASE" + new Random().Next().ToString();
public void Find(Action<IPAddress> callback)
{
FoundCallback = callback;
MulticastSocket = new UdpAnySourceMulticastClient(IPAddress.Parse("239.255.255.250"), PortNumber);
MulticastSocket.BeginJoinGroup((result) =>
{
try
{
MulticastSocket.EndJoinGroup(result);
GroupJoined(result);
}
catch (Exception ex)
{
// Debug.WriteLine("EndjoinGroup exception {0}", ex.Message);
// This can happen eg when wifi is off
FoundCallback(null);
}
},
null);
}
void callback_send(IAsyncResult result)
{
}
byte[] MulticastData;
bool keepsearching;
void GroupJoined(IAsyncResult result)
{
MulticastData = Encoding.UTF8.GetBytes(MulticastMessage);
keepsearching = true;
MulticastSocket.BeginSendToGroup(MulticastData, 0, MulticastData.Length, callback_send, null);
while (keepsearching)
{
try
{
byte[] buffer = new byte[MulticastData.Length];
MulticastSocket.BeginReceiveFromGroup(buffer, 0, buffer.Length, DoneReceiveFromGroup, buffer);
}
catch (Exception ex)
{
// Debug.WriteLine("Stopped Group read due to " + ex.Message);
keepsearching = false;
}
}
}
void DoneReceiveFromGroup(IAsyncResult result)
{
string str = "";
IPEndPoint where;
int responselength = MulticastSocket.EndReceiveFromGroup(result, out where);
byte[] buffer = result.AsyncState as byte[];
if (responselength == MulticastData.Length && buffer.SequenceEqual(MulticastData))
{
str = where.Address.ToString();
keepsearching = false;
FoundCallback(where.Address);
}
Console.WriteLine(str);
}
}
I was successful to find out the IP address of connected Wi-Fi. I turn off Wi-Fi and turn on the Data Connection. I am not able to get the IP address of connected network. I got the error ** a socket operation encountered a dead network**. I have also refer this question A socket operation encountered a dead network. How can I solve this problem ?
Question is a bit old, but answer may be useful for someone:
You get this error, because your MyIPAddress class can only find a local IP (the address inside your internal WiFi network, behind router). To get an external IP address you should call an external server that will tell you your IP (eg. whatismyip.com).
In my app I need to download several images from a server. I use this code to get a byte array :
HttpConnection connection = null;
InputStream inputStream = null;
byte[] data = null;
try
{
//connection = (HttpConnection)Connector.open(url);
connection = (HttpConnection)Connector.open(url, Connector.READ_WRITE, true);
int responseCode = connection.getResponseCode();
if(responseCode == HttpConnection.HTTP_OK)
{
inputStream = connection.openInputStream();
data = IOUtilities.streamToBytes(inputStream);
inputStream.close();
}
connection.close();
return data;
}
catch(IOException e)
{
return null;
}
The url are formed with the suffix ";deviceSide=false;ConnectionType=MDS - public" (without spaces) and it is working perfectly well.
The problem is that with phones that do not have a sim card, we can't connect to the internet via the MDS server. So we changed to use the connection factory and let BB choose whatever he wants :
ConnectionFactory connFact = new ConnectionFactory();
ConnectionDescriptor connDesc;
connDesc = connFact.getConnection(url);
if (connDesc != null)
{
final HttpConnection httpConn;
httpConn = (HttpConnection)connDesc.getConnection();
try
{
httpConn.setRequestMethod(HttpConnection.GET);
final int iResponseCode = httpConn.getResponseCode();
if(iResponseCode == HttpConnection.HTTP_OK)
{
InputStream inputStream = null;
try{
inputStream = httpConn.openInputStream();
byte[] data = IOUtilities.streamToBytes(inputStream);
return data;
}
catch(Exception e)
{
e.printStackTrace();
return null;
}
finally{
try
{
inputStream.close();
} catch (IOException e)
{
e.printStackTrace();
return null;
}
}
}
}
catch (IOException e)
{
System.err.println("Caught IOException: " + e.getMessage());
}
}
return null;
The connection works because it select the good prefix (interface=wifi in our case), but this create another problem.
Some images are not well downloaded, some of them (not the sames at each try) are corrupted, but only when the phone use a wifi connection to get these images.
How can I avoid this problem ? What method to get a connection do I have to use ? Is it possible to check if the user have a sim card in orderto use MDS - public ?
Here is an example of a corrupted image :
error image http://nsa30.casimages.com/img/2012/06/28/120628033716123822.png
try this:
public static String buildURL(String url) {
String connParams = "";
if (WLANInfo.getWLANState() == WLANInfo.WLAN_STATE_CONNECTED) {
connParams = ";interface=wifi"; //Connected to a WiFi access point.
} else {
int coverageStatus = CoverageInfo.getCoverageStatus();
//
if ((coverageStatus & CoverageInfo.COVERAGE_BIS_B) == CoverageInfo.COVERAGE_BIS_B) {
connParams = ";deviceside=false;ConnectionType=mds-public";
} else if ((coverageStatus & CoverageInfo.COVERAGE_DIRECT) == CoverageInfo.COVERAGE_DIRECT) {
// Have network coverage and a WAP 2.0 service book record
ServiceRecord record = getWAP2ServiceRecord();
//
if (record != null) {
connParams = ";deviceside=true;ConnectionUID=" + record.getUid();
} else {
connParams = ";deviceside=true";
}
} else if ((coverageStatus & CoverageInfo.COVERAGE_MDS) == CoverageInfo.COVERAGE_MDS) {
// Have an MDS service book and network coverage
connParams = ";deviceside=false";
}
}
Log.d("connection param"+url+connParams);
//
return url+connParams;
}
private static ServiceRecord getWAP2ServiceRecord() {
String cid;
String uid;
ServiceBook sb = ServiceBook.getSB();
ServiceRecord[] records = sb.getRecords();
//
for (int i = records.length -1; i >= 0; i--) {
cid = records[i].getCid().toLowerCase();
uid = records[i].getUid().toLowerCase();
//
if (cid.indexOf("wptcp") != -1
&& records[i].getUid().toLowerCase().indexOf("wap2") !=-1
&& uid.indexOf("wifi") == -1
&& uid.indexOf("mms") == -1) {
return records[i];
}
}
//
return null;
}
What happens when you append interface=wifi? Can you run the network diagnostic tool attached to below kb article and run all tests with SIM removed
http://supportforums.blackberry.com/t5/Java-Development/What-Is-Network-API-alternative-for-legacy-OS/ta-p/614822
Please also note that when download large files over BES/MDS there are limits imposed by MDS. Please ensure you review the below kb article
http://supportforums.blackberry.com/t5/Java-Development/Download-large-files-using-the-BlackBerry-Mobile-Data-System/ta-p/44585
You can check to see if coverage is sufficient for BIS_B (MDS public) but that won't help you if you are trying to support SIM-less users. I wonder if the problem is in an incomparability between the connection on Wi-Fi and IOUtilities.streamToBytes(). Try coding as recommended in the API documents.
Currently we have to tunnel over SSH to access our Oracle database. In order to do this we have to make sure than putty or an equivalent program/script is running on the server doing this tunelling before the application is deployed to Tomcat/Glassfish/etc.
Has anybody found a way to have java handle this tunneling transparently? Perhaps a jdbc driver than itself wraps another jdbc drive handling the tunnelling for you right in Java?
My solution was to use Jsch from JCraft http://www.jcraft.com/jsch/ to open a tunnel when my application server starts up. I close the tunnel when the application server shuts down. I do this via a servlet context listener.
int findUnusedPort() {
final int startingPort = 1025;
final int endingPort = 1200;
for (int port = 1025; port < 1200; port++) {
ServerSocket serverSocket = null;
try {
serverSocket = new ServerSocket(port);
return port;
} catch (IOException e) {
System.out.println("Port " + port + "is currently in use, retrying port " + port + 1);
} finally {
// Clean up
if (serverSocket != null) try {
serverSocket.close();
} catch (IOException e) {
throw new RuntimeException("Unable to close socket on port" + port, e);
}
}
}
throw new RuntimeException("Unable to find open port between " + startingPort + " and " + endingPort);
}
private Session doSshTunnel(int tunnelPort) {
// SSH Tunnel
try {
final JSch jsch = new JSch();
sshSession = jsch.getSession("username", "sshhost", 22);
final Hashtable<String, String> config = new Hashtable<String, String>();
config.put("StrictHostKeyChecking", "no");
sshSession.setConfig(config);
sshSession.setPassword("password");
sshSession.connect();
int assigned_port = sshSession.setPortForwardingL(tunnelPort, remoteHost, remotePort);
return sshSession;
} catch (Exception e) {
throw new RuntimeException("Unable to open SSH tunnel", e);
}
}
I have used Apache MINA SSHD for a project a while back and I remember that there was support ofr opening tunnels.
You can check out http://mina.apache.org/sshd/ for more info.
Other options are discussed on this quesiton : SSH library for Java