Connect to RServe from JAVA using authentication

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  • I am running RServe from Server machine using cmd

    Rserve.exe --RS-conf Rserv.conf --RS-port 12306

  • Rserv.conf file has following content:

    pwdfile RserveAuth.txt
    auth required
    remote enable
    plaintext disable

  • RserveAuth.txt has following contents:

    Admin 123456

  • I am connecting to R Server from JAVA 

    import org.rosuda.REngine.REXPMismatchException;
import org.rosuda.REngine.REngineException;
import org.rosuda.REngine.Rserve.RConnection;
import org.rosuda.REngine.Rserve.RserveException;
import org.rosuda.REngine.REXP;
import org.rosuda.REngine.*;
public class ConnecttoR
{
  ...
  ...
 public void connectR()
 {
     try 
    { 
        RConnection connection = new RConnection("172.16.33.242",12306); // Works if authentication is not required in Rserv.conf 
    }
    catch (RserveException e) {
    e.printStackTrace();
    } 
    catch(REXPMismatchException e){
    e.printStackTrace();
    }
    catch(REngineException e){
    e.printStackTrace();            
} 
 }
}

  • Connection to Rserve is open to all without username & Password. How shall I add security and allow connection only with valid credentials to access Rserve

rserve tcp r windows java
1 Answers

As you have enabled the authentification after creating the connection as a first command you need to execute the login command. The Java library has a special wrapper for it.

See code below for example use case.

RConnection connection = new RConnection("127.0.0.1",12306);
connection.login("Admin", "123456");
REXP x = connection.eval("R.version.string");
System.out.println(x.asString());

Also, I would recommend using full path as the pwdfile value.

user_8748140
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