A demo server and client code is explained in the following tabs. For running the code necessary jars can be downloaded from the Resources section.
Set up gns account on the server.
On command prompt
$ java -jar gns-cli-<VersionNum>.jar
On gns-cli console
> set_default_gns gnserve.net 24398 true
> gns_connect gnserve.net 24398 true
> account_create YourEmailAddress@example.com
Console will print "An email has been sent to YourEmailAddress@example.com with instructions on how to verify the new
account." Check YourEmailAddress@example.com email account and verify the account. Then on the gns-cli cosole
> guid_use YourEmailAddress@example.com
> set_default_guid YourEmailAddress@example.com
Run the server sample code given below.
Compile the serve code
$ javac -cp msocket-<VersionNum>.jar MSocketServer.java
Run the server
$ java -cp msocket-<VersionNum>.jar:. MSocketServer testServer1
testServer1 above is the name of the server. This can be any name and it should be unique.
Sample server code
import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;
import edu.umass.cs.msocket.MServerSocket;
import edu.umass.cs.msocket.MSocket;
import edu.umass.cs.msocket.mobility.MobilityManagerServer;
public class MSocketServer
{
public static void main(String[] args) throws IOException
{
String serverName = args[0];
MServerSocket mserv = new MServerSocket(serverName);
//while(true)
{
MSocket msocket = mserv.accept();
OutputStream outstream = msocket.getOutputStream();
InputStream inpstream = msocket.getInputStream();
byte[] byteArray = new byte[1000];
int i=0;
while(i<10)
{
outstream.write( new String("hello world from server").getBytes() );
inpstream.read(byteArray);
System.out.println(new String(byteArray));
try
{
Thread.sleep(2000);
}
catch (InterruptedException e)
{
e.printStackTrace();
}
i++;
}
msocket.close();
}
mserv.close();
MobilityManagerServer.shutdownMobilityManager();
}
}
Set up gns information on the client.
On the client msocket just
needs gns hostname and portnumber, it doesn't need any account creation.
Steps for these are described below.
On command prompt
$ java -jar gns-cli-<VersionNum>.jar
On gns-cli console
> set_default_gns gnserve.net 24398 true
> quit
Start the client sample code given below.
Compile the serve code
$ javac -cp msocket-<VersionNum>.jar MSocketClient.java
Run the server
$ java -cp msocket-<VersionNum>.jar:. MSocketClient testServer1
testServer1 is the name of the server to connect to. It should be same as given while starting the server.
import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;
import edu.umass.cs.msocket.MSocket;
import edu.umass.cs.msocket.mobility.MobilityManagerClient;
public class MSocketClient
{
public static void main(String[] args) throws IOException
{
String serverName = args[0];
MSocket msock = new MSocket(serverName, 0);
OutputStream outstream = msock.getOutputStream();
InputStream inpstream = msock.getInputStream();
byte[] byteArray = new byte[1000];
int i=0;
while(i < 10)
{
outstream.write( new String("hello world from client").getBytes() );
inpstream.read(byteArray);
System.out.println(new String(byteArray));
try
{
Thread.sleep(2000);
} catch (InterruptedException e)
{
e.printStackTrace();
}
i++;
}
msock.close();
MobilityManagerClient.shutdownMobilityManager();
}
}
