Send & receive data over GPRS

Question

Hi All !!!
I am developing a program to receive and send data over GPRS. A remote device is sending data at a particular port (6600) of my server. I am able to read that through ServerSocket. However I am not being able to send any data to that device.
Any help?

Answer 1

I am using the code:
// Constructor
public ServerSocketReader(Socket socket) {
super("MultiSocketThread");
this.clientSocket = socket;
this.setDaemon(true);
public void run() {
try {
OutputStream out = clientSocket.getOutputStream();
InputStreamReader in = new InputStreamReader(clientSocket.getInputStream ());
//BufferedWriter bw = new BufferedWriter(new FileWriter(_filepath, true));
java.util.Date date = new java.util.Date();
SimpleDateFormat sdf = new SimpleDateFormat("EEE, dd-MMM-yy HH:mm:ss");
GprsProtocol protocol = new GprsProtocol();
int charCount = 0;
char[] cBuffer = new char[1000];
byte[] bBuffer;
String fromClient = "", toClient = "START";
int ii = 0;
while ((ii = in.read()) != -1) {
fromClient = fromClient + (char)ii;
if (fromClient.endsWith("2Y")) { //according to protocol
toClient = protocol.processInput(fromClient); //Protocol
bBuffer = toClient.getBytes();
for (int k=0; k<bBuffer.length; k++) {
out.write ((char)bBuffer[k]);
out.flush();
fromClient = "";
out.close ();
in.close ();
clientSocket.close ();
//bw.close();
} catch (IOException ioe) {
//out.println("Error::" + e);
System.out.println("Error in writing file : ");
ioe.printStackTrace();
} catch (Exception e) {
System.out.println("Error in ServerSocketReader : ");
e.printStackTrace();
finally {
//this.destroy();
I am geeting the error at line :-
while ((ii = in.read()) != -1) {
the error is :-
java.net.SocketException: A connection with a remote socket was reset by that socket.: A connection with a remote socket was rese
by that socket.
at java.net.SocketInputStream.socketRead(Native Method)
at java.net.SocketInputStream.read(SocketInputStream.java:104)
at java.net.SocketInputStream.read(SocketInputStream.java:82)
at java.io.InputStreamReader.fill(InputStreamReader.java(Compiled Code))
at java.io.InputStreamReader.read(InputStreamReader.java:256)
at java.io.InputStreamReader.read(InputStreamReader.java:229)
at ServerSocketReader.run(ServerSocketReader.java(Compiled Code))