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package basiclearner;
import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;
import java.io.PrintWriter;
import java.net.InetAddress;
import java.net.Socket;
import java.net.UnknownHostException;
import de.learnlib.api.SUL;
import de.learnlib.api.SULException;
/**
* Socket interface to connect to an SUT/test adapter over TCP.
*
* As an example, type into a unix terminal "nc -vl {ip} {port}" (where {ip} and
* {port} are the chosen values), and run this socketSUL. You can now control the
* SUL through the terminal.
* @author Ramon Janssen
*/
public class SocketSUL implements SUL<String, String>, AutoCloseable {
private final BufferedReader SULoutput;
private final PrintWriter SULinput;
private final Socket socket;
private final boolean extraNewLine;
private final String resetCmd;
/**
* Socket-interface for SUTs. Connects to a SUT (or test-adapter)
* @param ip the ip-address, for example InetAddress.getLoopbackAddress() for localhost
* @param port the tcp-port
* @param extraNewLine whether to print a newline after every input to the SUT
* @param resetCmd the command to send for resetting the SUT
* @throws UnknownHostException
* @throws IOException
*/
public SocketSUL(InetAddress ip, int port, boolean extraNewLine, String resetCmd) throws UnknownHostException, IOException {
this.socket = new Socket(ip, port);
this.SULoutput = new BufferedReader(new InputStreamReader(socket.getInputStream()));
this.SULinput = new PrintWriter(socket.getOutputStream(), true);
this.extraNewLine = extraNewLine;
this.resetCmd = resetCmd;
}
@Override
public void post() {
if (extraNewLine) {
this.SULinput.write(this.resetCmd + System.lineSeparator());
} else {
this.SULinput.write(this.resetCmd);
}
this.SULinput.flush();
}
@Override
public void pre() {
}
@Override
public String step(String input) throws SULException {
if (extraNewLine) {
this.SULinput.write(input + System.lineSeparator());
} else {
this.SULinput.write(input);
}
this.SULinput.flush();
try {
return this.SULoutput.readLine();
} catch (IOException e) {
throw new SULException(e);
}
}
@Override
public void close() throws Exception {
this.socket.close();
}
}
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