Discussion :

[bestof_net]

je developpe une application sous netbeans on utilisant le package snmp4j.
j'ai ajouté la variable 'msg' pour voir ou sa bloque dans le programme, j'ai consataté que il permet d'envoyer le paquet, mais, il n'arrive pas de récupréré le résultat. (msg="1 2").
je ne vois pas ou est le probleme?

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package Pack;
 
import org.snmp4j.CommunityTarget;
import org.snmp4j.PDU;
import org.snmp4j.Snmp;
import org.snmp4j.TransportMapping;
import org.snmp4j.event.ResponseEvent;
import org.snmp4j.event.ResponseListener;
import org.snmp4j.mp.SnmpConstants;
import org.snmp4j.smi.Address;
import org.snmp4j.smi.GenericAddress;
import org.snmp4j.smi.OID;
import org.snmp4j.smi.OctetString;
import org.snmp4j.smi.VariableBinding;
import org.snmp4j.transport.DefaultUdpTransportMapping;
 
public class snmp1
{
  private String msg="";
 
  public String Aff()
  {
     return msg;
  }
 
  public void methsnmp()
   {
    try
    {
     Address targetAddress = GenericAddress.parse("udp:127.0.0.1/161");
     TransportMapping transport = new DefaultUdpTransportMapping();
     Snmp snmp = new Snmp(transport);
 
     transport.listen();
 
     CommunityTarget target = new CommunityTarget();
     target.setCommunity(new OctetString("public"));
     target.setAddress(targetAddress);
     target.setRetries(2);
     target.setTimeout(1500);
     target.setVersion(SnmpConstants.version2c);
 
     PDU pdu = new PDU();
     pdu.add(new VariableBinding(new OID(new int[] {1,3,6,1,2,1,1,5,0})));
     //pdu.add(new VariableBinding(new OID(new int[] {1,3,6,1,2,1,1,7,0})));
     pdu.setType(PDU.GET);
 
     ResponseListener listener = new ResponseListener()
     {
       public void onResponse(ResponseEvent event)
          {
            msg+="3";
            ((Snmp)event.getSource()).cancel(event.getRequest(), this);
            msg="Received response PDU is: "+event.getResponse();
            //System.out.println(msg);
          }
     };
     msg+="1";
     snmp.send(pdu, target, null, listener);
     msg+="2";
    }
    catch(Exception e)
    {
      msg="Erreur";
    }
 }
}

[bestof_net]

j'ai résolu le probléme

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package Pack;
 
import org.snmp4j.CommunityTarget; 
import org.snmp4j.PDU; 
import org.snmp4j.Snmp; 
import org.snmp4j.TransportMapping; 
import org.snmp4j.event.ResponseEvent; 
import org.snmp4j.event.ResponseListener; 
import org.snmp4j.mp.SnmpConstants; 
import org.snmp4j.smi.*; 
import org.snmp4j.transport.DefaultUdpTransportMapping; 
 
public class snmp2
{
  public static final String READ_COMMUNITY = "public";
  public static final String WRITE_COMMUNITY= "private";
  //public static final int mSNMPVersion =0; // 0 represents SNMP version=1
 
  //public static final String OID_UPS_OUTLET_GROUP1 = "1.3.6.1.4.1.318.1.1.1.12.3.2.1.3.1";
  //public static final String OID_UPS_BATTERY_CAPACITY= "1.3.6.1.4.1.318.1.1.1.2.2.1.0";
 
  public static final String OID_UPS_OUTLET_GROUP1 = "1.3.6.1.2.1.1.5.0";
  public static final String OID_UPS_BATTERY_CAPACITY = "1.3.6.1.2.1.1.5.0";
 
  private String msg="";
 
  public snmp2()
  {
    try
     {
         String strIPAddress = "127.0.0.1";
         String val1="EXPLORATION";
         String val2="Exp";
 
         //snmpSet(strIPAddress, WRITE_COMMUNITY,OID_UPS_OUTLET_GROUP1, val1);
 
         msg =snmpGet(strIPAddress,READ_COMMUNITY,OID_UPS_BATTERY_CAPACITY);
      }
     catch (Exception e)
     {
           e.printStackTrace();
     }
  }
 private int SNMP_PORT=161;
 
 public void snmpSet(String strAddress, String community, String strOID, String Value)
  {
    strAddress= strAddress+"/"+SNMP_PORT;
    Address targetAddress = GenericAddress.parse(strAddress);
    Snmp snmp;
    try
    {
     TransportMapping transport = new DefaultUdpTransportMapping();
     snmp = new Snmp(transport);
     transport.listen();
     CommunityTarget target = new CommunityTarget();
     target.setCommunity(new OctetString(community));
     target.setAddress(targetAddress);
     target.setRetries(2);
     target.setTimeout(5000);
     target.setVersion(SnmpConstants.version1);
 
     PDU pdu = new PDU();
     //pdu.add(new VariableBinding(new OID(strOID), new Integer32(Value)));
     pdu.add(new VariableBinding(new OID(strOID), new OctetString(Value)));
 
     pdu.setType(PDU.SET);
 
     ResponseListener listener = new ResponseListener()
      {
        public void onResponse(ResponseEvent event)
         {
           ((Snmp)event.getSource()).cancel(event.getRequest(), this);
           msg="Set Status is:"+event.getResponse().getErrorStatusText();
           //System.out.println(msg);
         }
      };
     snmp.send(pdu, target, null, listener);
     snmp.close();
   }
   catch (Exception e)
   {
       e.printStackTrace();
   }
 }
 
  public String snmpGet(String strAddress, String communit, String strOID)
   {
    String str="";
    try
    {
      OctetString community = new OctetString(communit);
      strAddress= strAddress+"/"+SNMP_PORT;
      Address targetaddress = new UdpAddress(strAddress);
      TransportMapping transport = new DefaultUdpTransportMapping();
      transport.listen();
 
      CommunityTarget comtarget = new CommunityTarget();
      comtarget.setCommunity(community);
      comtarget.setVersion(SnmpConstants.version1);
      comtarget.setAddress(targetaddress);
      comtarget.setRetries(2);
      comtarget.setTimeout(5000);
 
      PDU pdu = new PDU();
      ResponseEvent response;
      Snmp snmp;
      pdu.add(new VariableBinding(new OID(strOID)));
      pdu.setType(PDU.GET);
      snmp = new Snmp(transport);
      response = snmp.get(pdu,comtarget);
      if(response != null)
        {
           if(response.getResponse().getErrorStatusText().equalsIgnoreCase("Success"))
            {
              PDU pduresponse=response.getResponse();
              str=pduresponse.getVariableBindings().firstElement().toString();
              if(str.contains("="))
               {
                 int len = str.indexOf("=");
                 str=str.substring(len+1, str.length());
               }
            }
        }
      else
       {
          msg="Feeling like a TimeOut occured";
          //System.out.println(msg);
       }
     snmp.close();
    }
    catch(Exception e)
    {
        e.printStackTrace();
    }
     //System.out.println("Response="+str);
     return str;
   }
 
  public String Aff()
  {
      return msg;
  }
}