Please help in snmp project

the problem in this project is that it is not giving mib information of another computer, though it is retreiving info of local computer on which it is running. following is the sourcecode: main starts from snmpclint class

import javax.swing.*;

import java.awt.*;

import java.awt.event.*;

import java.awt.Component.*;

import javax.swing.border.*;

import java.lang.*;

import java.net.*;

import java.io.*;

public class Snmpclint extends JFrame implements Runnable, ActionListener

{

private JTextField status,value,server,community;

private JLabel name;

int id;

byte type;

private List mib;

private List table;

java.util.Vector index;

Thread thread = null;

JSnmp snmp = null;

int op;

Mib root;

Mib crt;

int pos;

static int READ = 0;

static int WRITE = 1;

public Snmpclint()

{

super ("Network Traffic Controller");

super.setBounds(400,160,600,600);

setSize(600,500);

GridBagLayout gbl = new GridBagLayout();

GridBagConstraints gbc = new GridBagConstraints();

setLayout(gbl);

gbc.fill = GridBagConstraints.HORIZONTAL;

gbc.weightx = 100;

gbc.weighty = 0;

JPanel p2 = new JPanel();

p2.setLayout(new GridLayout(1, 3));

JButton read = new JButton("Read");

read.addActionListener(this);

p2.add(read);

JButton write = new JButton("Write");

write.addActionListener(this);

p2.add(write);

JButton stop = new JButton("Stop");

stop.addActionListener(this);

p2.add(stop);

add(this, p2, gbl, gbc, 0, 0, 6, 1);

JPanel p1 = new JPanel();

p1.setBorder(new EmptyBorder(10, 10, 10, 10));

p1.setLayout(new GridLayout(3, 2));

p1.add(new JLabel("Server"));

String host = "";

try{

host = InetAddress.getLocalHost().getHostName();

} catch(UnknownHostException e){};

p1.add(server = new JTextField(host));

p1.add(new JLabel("Community"));

p1.add(community = new JTextField("public"));

name = new JLabel("");

p1.add(name);

p1.add(value = new JTextField(""));

add(this, p1, gbl, gbc, 0, 1, 6, 3);

JPanel p3 = new JPanel();

p3.setLayout(new GridLayout(1, 2));

JPanel pmib = new JPanel();

pmib.setLayout(new GridLayout(1, 1));

mib = new List();

setMib();

pmib.add(mib);

JPanel ptable = new JPanel();

ptable.setLayout(new GridLayout(1, 1));

table = new List();

ptable.add(table);

index = new java.util.Vector();

p3.add(pmib);

p3.add(ptable);

gbc.weighty = 100;

gbc.fill = GridBagConstraints.BOTH;

add(this, p3, gbl, gbc, 0, 4, 6, 8);

status = new JTextField("Initialized");

status.setEditable(false);

gbc.weighty = 0;

gbc.fill = GridBagConstraints.HORIZONTAL;

add(this, status, gbl, gbc, 0, 12, 6, 1);

validate();

setVisible(true);

WindowListener wndclose = new WindowAdapter() {

public void windowClosing(WindowEvent e) {

System.exit(0);

}

};

addWindowListener(wndclose);

}

void setMib(){

root = new Mib("mib-2", null, 8);

Mib system = new Mib("system", root, 7);

system.children[0] = new Mib("sysDescr", "1.3.6.1.2.1.1.1", system);

system.children[1] = new Mib("sysObjectId", "1.3.6.1.2.1.1.2", system);

system.children[2] = new Mib("sysUpTime", "1.3.6.1.2.1.1.3", system);

system.children[3] = new Mib("sysContact", "1.3.6.1.2.1.1.4", system);

system.children[4] = new Mib("sysName", "1.3.6.1.2.1.1.5", system);

system.children[5] = new Mib("sysLocation", "1.3.6.1.2.1.1.6", system);

system.children[6] = new Mib("sysServices", "1.3.6.1.2.1.1.7", system);

root.children[0] = system;

Mib interfaces = new Mib("interfaces", root, 2);

interfaces.children[0] = new Mib("ifNumber", "1.3.6.1.2.1.2.1", interfaces);

interfaces.children[1] = new Mib("ifTable", interfaces, 1);

Mib ife = new Mib("ifEntry", interfaces, 22);

ife.children[0] = new Mib("ifIndex", "1.3.6.1.2.1.2.2.1.1", ife);

ife.children[1] = new Mib("ifDescre", "1.3.6.1.2.1.2.2.1.2", ife);

ife.children[2] = new Mib("ifType", "1.3.6.1.2.1.2.2.1.3", ife);

ife.children[3] = new Mib("ifMtu", "1.3.6.1.2.1.2.2.1.4", ife);

ife.children[4] = new Mib("ifSpeed", "1.3.6.1.2.1.2.2.1.5", ife);

ife.children[5] = new Mib("ifPhysAddress", "1.3.6.1.2.1.2.2.1.6", ife);

ife.children[6] = new Mib("ifAdminStatus", "1.3.6.1.2.1.2.2.1.7", ife);

ife.children[7] = new Mib("ifOperStatus", "1.3.6.1.2.1.2.2.1.8", ife);

ife.children[8] = new Mib("ifLastChange", "1.3.6.1.2.1.2.2.1.9", ife);

ife.children[9] = new Mib("ifInOctets", "1.3.6.1.2.1.2.2.1.10", ife);

ife.children[10] = new Mib("ifInUcastPkts", "1.3.6.1.2.1.2.2.1.11", ife);

ife.children[11] = new Mib("ifInNUcastPkts", "1.3.6.1.2.1.2.2.1.12", ife);

ife.children[12] = new Mib("ifInDiscards", "1.3.6.1.2.1.2.2.1.13", ife);

ife.children[13] = new Mib("ifInErrors", "1.3.6.1.2.1.2.2.1.14", ife);

ife.children[14] = new Mib("ifInUnknownProtos", "1.3.6.1.2.1.2.2.1.15", ife);

ife.children[15] = new Mib("ifOutOctets", "1.3.6.1.2.1.2.2.1.16", ife);

ife.children[16] = new Mib("ifOutUcastPkts", "1.3.6.1.2.1.2.2.1.17", ife);

ife.children[17] = new Mib("ifOutNUcastPkts", "1.3.6.1.2.1.2.2.1.18", ife);

ife.children[18] = new Mib("ifOutDiscards", "1.3.6.1.2.1.2.2.1.19", ife);

ife.children[19] = new Mib("ifOutErrors", "1.3.6.1.2.1.2.2.1.20", ife);

ife.children[20] = new Mib("ifOutQLen", "1.3.6.1.2.1.2.2.1.21", ife);

ife.children[21] = new Mib("ifSpecific", "1.3.6.1.2.1.2.2.1.22", ife);

interfaces.children[1].children[0] = ife;

root.children[1] = interfaces;

Mib at = new Mib("at", root, 1);

at.children[0] = new Mib("atTable", at, 1);

Mib ate = new Mib("atEntry", at.children[0], 3);

ate.children[0] = new Mib("atIfIndex", "1.3.6.1.2.1.3.1.1.1", ate);

ate.children[1] = new Mib("atPhysAddress", "1.3.6.1.2.1.3.1.1.2", ate);

ate.children[2] = new Mib("atNetAddress", "1.3.6.1.2.1.3.1.1.3", ate);

at.children[0].children[0] = ate;

root.children[2] = at;

Mib ip = new Mib("ip", root, 23);

ip.children[0] = new Mib("ipForwarding", "1.3.6.1.2.1.4.1", ip);

ip.children[1] = new Mib("ipDefaultTTL", "1.3.6.1.2.1.4.2", ip);

ip.children[2] = new Mib("ipInReceives", "1.3.6.1.2.1.4.3", ip);

ip.children[3] = new Mib("ipInHdrErrors", "1.3.6.1.2.1.4.4", ip);

ip.children[4] = new Mib("ipInAddrErrors", "1.3.6.1.2.1.4.5", ip);

ip.children[5] = new Mib("ipForwDatagrams", "1.3.6.1.2.1.4.6", ip);

ip.children[6] = new Mib("ipUnknownProtos", "1.3.6.1.2.1.4.7", ip);

ip.children[7] = new Mib("ipInDiscards", "1.3.6.1.2.1.4.8", ip);

ip.children[8] = new Mib("ipInDelivers", "1.3.6.1.2.1.4.9", ip);

ip.children[9] = new Mib("ipOutRequests", "1.3.6.1.2.1.4.10", ip);

ip.children[10] = new Mib("ipOutDiscards", "1.3.6.1.2.1.4.11", ip);

ip.children[11] = new Mib("ipOutNoRoutes", "1.3.6.1.2.1.4.12", ip);

ip.children[12] = new Mib("ipReasmTimeOut", "1.3.6.1.2.1.4.13", ip);

ip.children[13] = new Mib("ipReasmReqds", "1.3.6.1.2.1.4.14", ip);

ip.children[14] = new Mib("ipReasmOKs", "1.3.6.1.2.1.4.15", ip);

ip.children[15] = new Mib("ipReasmFails", "1.3.6.1.2.1.4.16", ip);

ip.children[16] = new Mib("ipFragOKs", "1.3.6.1.2.1.4.17", ip);

ip.children[17] = new Mib("ipFragFails", "1.3.6.1.2.1.4.18", ip);

ip.children[18] = new Mib("ipFragCreates", "1.3.6.1.2.1.4.19", ip);

ip.children[19] = new Mib("ipAddrTable", ip, 1);

Mib ipaddr = new Mib("ipAddrEntry", ip.children[19], 5);

ipaddr.children[0] = new Mib("ipAdEntAddr", "1.3.6.1.2.1.4.20.1.1", ipaddr);

ipaddr.children[1] = new Mib("ipAdEntIfIndex", "1.3.6.1.2.1.4.20.1.2", ipaddr);

ipaddr.children[2] = new Mib("ipAdEntNetMask", "1.3.6.1.2.1.4.20.1.3", ipaddr);

ipaddr.children[3] = new Mib("ipAdEntBcastAddr", "1.3.6.1.2.1.4.20.1.4", ipaddr);

ipaddr.children[4] = new Mib("ipAdEntReasmMaxSize", "1.3.6.1.2.1.4.20.1.5", ipaddr);

ip.children[19].children[0] = ipaddr;

ip.children[20] = new Mib("ipRouteTable", ip, 1);

Mib ipr = new Mib("ipRouteEntry", ip.children[20], 13);

ipr.children[0] = new Mib("ipRouteDest", "1.3.6.1.2.1.4.21.1.1", ipr);

ipr.children[1] = new Mib("ipRouteIfIndex", "1.3.6.1.2.1.4.21.1.2", ipr);

ipr.children[2] = new Mib("ipRouteMetric1", "1.3.6.1.2.1.4.21.1.3", ipr);

ipr.children[3] = new Mib("ipRouteMetric2", "1.3.6.1.2.1.4.21.1.4", ipr);

ipr.children[4] = new Mib("ipRouteMetric3", "1.3.6.1.2.1.4.21.1.5", ipr);

ipr.children[5] = new Mib("ipRouteMetric4", "1.3.6.1.2.1.4.21.1.6", ipr);

ipr.children[6] = new Mib("ipRouteNextHop", "1.3.6.1.2.1.4.21.1.7", ipr);

ipr.children[7] = new Mib("ipRouteType", "1.3.6.1.2.1.4.21.1.8", ipr);

ipr.children[8] = new Mib("ipRouteProto", "1.3.6.1.2.1.4.21.1.9", ipr);

ipr.children[9] = new Mib("ipRouteAge", "1.3.6.1.2.1.4.21.1.10", ipr);

ipr.children[10] = new Mib("ipRouteMask", "1.3.6.1.2.1.4.21.1.11", ipr);

ipr.children[11] = new Mib("ipRouteMetric5", "1.3.6.1.2.1.4.21.1.12", ipr);

ipr.children[12] = new Mib("ipRouteInfo", "1.3.6.1.2.1.4.21.1.13", ipr);

ip.children[20].children[0] = ipr;

ip.children[21] = new Mib("ipNetToMediaTable", ip, 1);

Mib ipn = new Mib("ipNetToMediaEntry", ip.children[21], 4);

ipn.children[0] = new Mib("ipNetToMediaIfIndex", "1.3.6.1.2.1.4.22.1.1", ipn);

ipn.children[1] = new Mib("ipNetToMediaPhysAddress", "1.3.6.1.2.1.4.22.1.2", ipn);

ipn.children[2] = new Mib("ipNetToMediaNetAddress", "1.3.6.1.2.1.4.22.1.3", ipn);

ipn.children[3] = new Mib("ipNetToMediaType", "1.3.6.1.2.1.4.22.1.4", ipn);

ip.children[21].children[0] = ipn;

ip.children[22] = new Mib("ipRoutingDiscards", "1.3.6.1.2.1.4.23", ip);

root.children[3] = ip;

Mib icmp = new Mib("icmp", root, 26);

icmp.children[0] = new Mib("icmpInMsgs", "1.3.6.1.2.1.5.1", icmp);

icmp.children[1] = new Mib("icmpInErrors", "1.3.6.1.2.1.5.2", icmp);

icmp.children[2] = new Mib("icmpInDestUnreachs", "1.3.6.1.2.1.5.3", icmp);

icmp.children[3] = new Mib("icmpInTimeExcds", "1.3.6.1.2.1.5.4", icmp);

icmp.children[4] = new Mib("icmpParmProbs", "1.3.6.1.2.1.5.5", icmp);

icmp.children[5] = new Mib("icmpInSrcQuenchs", "1.3.6.1.2.1.5.6", icmp);

icmp.children[6] = new Mib("icmpInRedirects", "1.3.6.1.2.1.5.7", icmp);

icmp.children[7] = new Mib("icmpInEchos", "1.3.6.1.2.1.5.8", icmp);

icmp.children[8] = new Mib("icmpInEchoReps", "1.3.6.1.2.1.5.9", icmp);

icmp.children[9] = new Mib("icmpInTimestamps", "1.3.6.1.2.1.5.10", icmp);

icmp.children[10] = new Mib("icmpInTimestampReps", "1.3.6.1.2.1.5.11", icmp);

icmp.children[11] = new Mib("icmpInAddrMasks", "1.3.6.1.2.1.5.12", icmp);

icmp.children[12] = new Mib("icmpInAddrMaskReps", "1.3.6.1.2.1.5.13", icmp);

icmp.children[13] = new Mib("icmpOutMsgs", "1.3.6.1.2.1.5.14", icmp);

icmp.children[14] = new Mib("icmpOutErrors", "1.3.6.1.2.1.5.15", icmp);

icmp.children[15] = new Mib("icmpOutDestUnreachs", "1.3.6.1.2.1.5.16", icmp);

icmp.children[16] = new Mib("icmpOutTimeExcds", "1.3.6.1.2.1.5.17", icmp);

icmp.children[17] = new Mib("icmpOutParmProbs", "1.3.6.1.2.1.5.18", icmp);

icmp.children[18] = new Mib("icmpOutSrcQuenchs", "1.3.6.1.2.1.5.19", icmp);

icmp.children[19] = new Mib("icmpOutRedirects", "1.3.6.1.2.1.5.20", icmp);

icmp.children[20] = new Mib("icmpOutEchos", "1.3.6.1.2.1.5.21", icmp);

icmp.children[21] = new Mib("icmpOutEchoReps", "1.3.6.1.2.1.5.22", icmp);

icmp.children[22] = new Mib("icmpOutTimestamps", "1.3.6.1.2.1.5.23", icmp);

icmp.children[23] = new Mib("icmpOutTimestampReps", "1.3.6.1.2.1.5.24", icmp);

icmp.children[24] = new Mib("icmpOutAddrMasks", "1.3.6.1.2.1.5.25", icmp);

icmp.children[25] = new Mib("icmpOutAddrMaskReps", "1.3.6.1.2.1.5.26", icmp);

root.children[4] = icmp;

Mib tcp = new Mib("tcp", root, 15);

tcp.children[0] = new Mib("tcpRtoAlgorithm", "1.3.6.1.2.1.6.1", tcp);

tcp.children[1] = new Mib("tcpRtoMin", "1.3.6.1.2.1.6.2", tcp);

tcp.children[2] = new Mib("tcpRtoMax", "1.3.6.1.2.1.6.3", tcp);

tcp.children[3] = new Mib("tcpMaxConn", "1.3.6.1.2.1.6.4", tcp);

tcp.children[4] = new Mib("tcpActiveOpens", "1.3.6.1.2.1.6.5", tcp);

tcp.children[5] = new Mib("tcpPassiveOpens", "1.3.6.1.2.1.6.6", tcp);

tcp.children[6] = new Mib("tcpAttemptFails", "1.3.6.1.2.1.6.7", tcp);

tcp.children[7] = new Mib("tcpEstabResets", "1.3.6.1.2.1.6.8", tcp);

tcp.children[8] = new Mib("tcpCurrEstab", "1.3.6.1.2.1.6.9", tcp);

tcp.children[9] = new Mib("tcpInSegs", "1.3.6.1.2.1.6.10", tcp);

tcp.children[10] = new Mib("tcpOutSegs", "1.3.6.1.2.1.6.11", tcp);

tcp.children[11] = new Mib("tcpRetransSegs", "1.3.6.1.2.1.6.12", tcp);

tcp.children[12] = new Mib("tcpConnTable", tcp, 1);

Mib tce = new Mib("tcpConnEntry", tcp.children[12], 5);

tce.children[0] = new Mib("tcpConnState", "1.3.6.1.2.1.6.13.1.1", tce);

tce.children[1] = new Mib("tcpConnLocalAddress", "1.3.6.1.2.1.6.13.1.2", tce);

tce.children[2] = new Mib("tcpConnLocalPort", "1.3.6.1.2.1.6.13.1.3", tce);

tce.children[3] = new Mib("tcpConnRemAddress", "1.3.6.1.2.1.6.13.1.4", tce);

tce.children[4] = new Mib("tcpConnRemPort", "1.3.6.1.2.1.6.13.1.5", tce);

tcp.children[12].children[0] = tce;

tcp.children[13] = new Mib("tcpInErrs", "1.3.6.1.2.1.6.14", tcp);

tcp.children[14] = new Mib("tcpOutRsts", "1.3.6.1.2.1.6.15", tcp);

root.children[5] = tcp;

Mib udp = new Mib("udp", root, 5);

udp.children[0] = new Mib("udpInDatagrams", "1.3.6.1.2.1.7.1", udp);

udp.children[1] = new Mib("udpNoPorts", "1.3.6.1.2.1.7.2", udp);

udp.children[2] = new Mib("udpInErrors", "1.3.6.1.2.1.7.3", udp);

udp.children[3] = new Mib("udpOutDatagrams", "1.3.6.1.2.1.7.4", udp);

udp.children[4] = new Mib("udpTable", udp, 1);

Mib ude = new Mib("udpEntry", udp.children[4], 2);

ude.children[0] = new Mib("udpLocalAddress", "1.3.6.1.2.1.7.5.1", ude);

ude.children[1] = new Mib("udpLocalPort", "1.3.6.1.2.1.7.5.2", ude);

udp.children[4].children[0] = ude;

root.children[6] = udp;

Mib sn = new Mib("snmp", root, 28);

sn.children[0] = new Mib("snmpInPkts", "1.3.6.1.2.1.11.1", sn);

sn.children[1] = new Mib("snmpOutPkts", "1.3.6.1.2.1.11.2", sn);

sn.children[2] = new Mib("snmpInBadVersion", "1.3.6.1.2.1.11.3", sn);

sn.children[3] = new Mib("snmpInBadCommunityNames", "1.3.6.1.2.1.11.4", sn);

sn.children[4] = new Mib("snmpInBadCommunityUses", "1.3.6.1.2.1.11.5", sn);

sn.children[5] = new Mib("snmpInASNParseErrs", "1.3.6.1.2.1.11.6", sn);

sn.children[6] = new Mib("snmpInTooBigs", "1.3.6.1.2.1.11.8", sn);

sn.children[7] = new Mib("snmpInNoSuchNames", "1.3.6.1.2.1.11.9", sn);

sn.children[8] = new Mib("snmpInBadValues", "1.3.6.1.2.1.11.10", sn);

sn.children[9] = new Mib("snmpInReadOnlys", "1.3.6.1.2.1.11.11", sn);

sn.children[10] = new Mib("snmpInGenErrs", "1.3.6.1.2.1.11.12", sn);

sn.children[11] = new Mib("snmpInTotalReqVars", "1.3.6.1.2.1.11.13", sn);

sn.children[12] = new Mib("snmpInTotalSetVars", "1.3.6.1.2.1.11.14", sn);

sn.children[13] = new Mib("snmpInGetRequests", "1.3.6.1.2.1.11.15", sn);

sn.children[14] = new Mib("snmpInGetNexts", "1.3.6.1.2.1.11.16", sn);

sn.children[15] = new Mib("snmpInSetRequests", "1.3.6.1.2.1.11.17", sn);

sn.children[16] = new Mib("snmpInGetResponses", "1.3.6.1.2.1.11.18", sn);

sn.children[17] = new Mib("snmpInTraps", "1.3.6.1.2.1.11.19", sn);

sn.children[18] = new Mib("snmpOutTooBigs", "1.3.6.1.2.1.11.20", sn);

sn.children[19] = new Mib("snmpOutNoSuchNames", "1.3.6.1.2.1.11.21", sn);

sn.children[20] = new Mib("snmpOutBadValues", "1.3.6.1.2.1.11.22", sn);

sn.children[21] = new Mib("snmpOutGenErrs", "1.3.6.1.2.1.11.24", sn);

sn.children[22] = new Mib("snmpOutGetRequests", "1.3.6.1.2.1.11.25", sn);

sn.children[23] = new Mib("snmpOutGetNexts", "1.3.6.1.2.1.11.26", sn);

sn.children[24] = new Mib("snmpOutSetRequests", "1.3.6.1.2.1.11.27", sn);

sn.children[25] = new Mib("snmpOutGetResponses", "1.3.6.1.2.1.11.28", sn);

sn.children[26] = new Mib("snmpOutTraps", "1.3.6.1.2.1.11.29", sn);

sn.children[27] = new Mib("snmpEnableAuthenTraps", "1.3.6.1.2.1.11.30", sn);

root.children[7] = sn;

crt = root;

pos = 0;

showMib();

}

void showMib(){

mib.removeAll();

mib.add("[..]");

for(int i = 0; i < crt.children.length; i ++)

mib.add(crt.children.name);

clearObjectFields();

validate();

}

boolean browseMib(){

if(pos == 0){

if(crt == root) status.setText("Can't go up. Root reached");

else{

crt = crt.parent;

pos = 0;

showMib();

}

return true;

}

else if(crt.children[pos - 1].children != null){

crt = crt.children[pos - 1];

pos = 0;

showMib();

return true;

}

return false;

}

void clearObjectFields(){

if(value != null) value.setText("");

if(name != null) name.setText("");

id = -1;

if(index != null && index.size() != 0) index.removeAllElements();

if(table != null && table.getItemCount() != 0) table.removeAll();

if(status != null) status.setText("Idle");

}

private void add(Container p, Component c, GridBagLayout gbl,

GridBagConstraints gbc, int x, int y, int w, int h){

gbc.gridx = x;

gbc.gridy = y;

gbc.gridwidth = w;

gbc.gridheight = h;

gbl.setConstraints(c, gbc);

add(c);

}

public static void main(String args[])

{

Snmpclint app=new Snmpclint();

}

public void actionPerformed(ActionEvent e)

{

if(e.getActionCommand()=="Read")

{

stopReq();

op = READ;

thread = new Thread(this);

thread.setPriority(Thread.MIN_PRIORITY);

thread.start();

}

else if(e.getActionCommand()=="Write")

{

stopReq();

op = WRITE;

thread = new Thread(this);

thread.setPriority(Thread.MIN_PRIORITY);

thread.start();

}

else if(e.getActionCommand()=="Stop")

{

stopReq();

}

public boolean handleEvent(Event evt){

if(evt.target == mib && evt.id == Event.LIST_SELECT){

pos = mib.getSelectedIndex();

stopReq();

op = READ;

thread = new Thread(this);

thread.setPriority(Thread.MIN_PRIORITY);

thread.start();

}

else if(evt.target == table && evt.id == Event.LIST_SELECT){

id = table.getSelectedIndex();

setValue(table.getSelectedIndex());

}

return super.handleEvent(evt);

}

void processStatus(int stat){

status.setText("Authentication error");

}

void processReq(Req req){

if(req.status != 0) processStatus(req.status);

else{

type = req.vb[0].value.type;

table.add(req.vb[0].value.toString());

index.addElement(req.vb[0].id.toString());

}

void stopReq(){

if(thread != null) thread.stop();

thread = null;

snmp = null;

status.setText("Idle");

}

boolean subset(String s1, String s2){

return s1.regionMatches(0, s2, 0, s2.length());

}

void readReq(){

if(browseMib()) return;

clearObjectFields();

status.setText("Request sent. Waiting...");

boolean success = true;

String crtId = crt.children[pos - 1].id;

while(subset(crtId, crt.children[pos - 1].id)){

try{

snmp = new JSnmp(server.getText(), community.getText(), SnmpCfg.SLEEP);

Req req = new Req(SnmpCfg.GETNEXT, 1);

req.vb[0] = new Vb(crtId);

// problem starts from next step when retreiving info from other computer

snmp.request(req);

crtId = req.vb[0].id.toString();

if(subset(crtId, crt.children[pos - 1].id)) processReq(req);

snmp = null;

}

catch(IOException e){

success = false;

break;

}

if(success){

setValue(0);

id = 0;

validate();

status.setText("Request processed");

}

else status.setText("IOException");

}

void setValue(int i){

String n = mib.getSelectedItem() + "[" + i + "]";

name.setText(n);

value.setText(table.getItem(i));

}

void writeReq(){

if(id == -1){

status.setText("Select an item before any write op");

return;

}

try{

snmp = new JSnmp(server.getText(), community.getText(), SnmpCfg.SLEEP);

Req req = new Req(SnmpCfg.SET, 1);

req.vb[0] = new Vb(((String) index.elementAt(id)), value.getText(), type);

status.setText("Request sent. Waiting...");

// similar problem here too

snmp.request(req);

snmp = null;

status.setText("Request processed");

if(req.status != 0) processStatus(req.status);

else readReq();

}

catch(IOException e){

status.setText("IOException");

}

public void stop1(){

stopReq();

}

public void run(){

status.setText("thread running");

if(op == READ) readReq();

else if(op == WRITE) writeReq();

}

import java.io.*;

import java.util.*;

import java.net.*;

public class Snmp{

int to;

Value comm;

public Snmp(String c, int sleep){

to = sleep;

comm = new Value(SnmpCfg.OCTETSTRING, c);

}

protected void finalize() throws Throwable{

tlClose();

}

public boolean tlOpen() throws IOException{

return false;

}

public boolean tlClose() throws IOException{

return false;

}

public boolean tlSend(byte[] buff) throws IOException{

return false;

}

public byte[] tlRecv() throws IOException{

return null;

}

public boolean tlReady() throws IOException{

return false;

}

public boolean tlWait(int tout) throws IOException{

return false;

}

public int sendReq(Req req, ByteArrayOutputStream baos) throws IOException{

int i, pdu_l, msg_l, vb_l, rez;

Value v = new Value();

vb_l = 0;

for(i = 0; i < req.vb.length; i ++)

vb_l += req.vb.tlvSize();

if(vb_l < 128)

pdu_l = vb_l + 11;

else

pdu_l = vb_l + SnmpNumber.lengthInt(vb_l) + 11;

if(pdu_l < 128)

msg_l = pdu_l +comm.tlvSize() + 5;

else

msg_l = pdu_l + SnmpNumber.lengthInt(pdu_l) + comm.tlvSize() + 5;

v.type = SnmpCfg.SEQUENCE;

v.length = msg_l;

rez = v.tlvSize();

if(! v.out(baos)) return 0;

v = null;

v = new Value(SnmpCfg.SNMP_VER);

if(! v.out(baos)) return 0;

if(! comm.out(baos)) return 0;

v.type = req.type;

v.length = pdu_l;

if(! v.out(baos)) return 0;

v = new Value(0);

if(! v.out(baos)) return 0;

v.type = SnmpCfg.SEQUENCE;

v.length = vb_l;

if(! v.out(baos)) return 0;

for(i = 0; i < req.vb.length; i ++)

req.vb.out(baos);

return rez;

}

public int recvReq(Req req, ByteArrayInputStream bais) throws IOException{

Value v = new Value();

int rez, dim;

if((dim = v.in(bais)) == 0) return 0;

if(v.type != SnmpCfg.SEQUENCE) return 0;

rez = dim + v.vSize();

if((dim = v.in(bais)) == 0) return 0;

if(v.type != SnmpCfg.INTEGER) return 0;

if(v.getInt() != SnmpCfg.SNMP_VER) return 0;

if((dim = v.in(bais)) == 0) return 0;

//A secure client should exit here if v != comm