public void Listen()
{
var ipEndPoint = new IPEndPoint(IPAddress.Any, 162);
Task.Run(async() => {
var run = true;
while (run)
{
try {
using (var udpListener = new UdpClient(ipEndPoint)) {
var udpRecieveResult = await udpListener.ReceiveAsync();
var recievedData = udpRecieveResult.Buffer;
int protocolVersion = SnmpPacket.GetProtocolVersion(recievedData, recievedData.Length);
switch (protocolVersion)
{
case (int)SnmpVersion.Ver1:
var snmpV1TrapPacket = new SnmpV1TrapPacket();
snmpV1TrapPacket.decode(recievedData, recievedData.Length);
RecieveTrap(snmpV1TrapPacket);
break;
case (int)SnmpVersion.Ver2:
var snmpV2Packet = new SnmpV2Packet();
snmpV2Packet.decode(recievedData, recievedData.Length);
RecieveTrap(snmpV2Packet);
break;
case (int)SnmpVersion.Ver3:
var snmpV3Packet = new SnmpV3Packet();
snmpV3Packet.decode(recievedData, recievedData.Length);
RecieveTrap(snmpV3Packet);
break;
}
}
}
catch (SocketException) {
ErrorMessageBox.Show($"Port {ipEndPoint.Port} is already used.");
run = false;
}
catch (Exception e) {
ErrorMessageBox.Show($"{e.Message}");
}
}
});
}
private void AcceptTrap()
{
if (!isListenTrap)
{
return;
}
socket = new Socket(AddressFamily.InterNetwork, SocketType.Dgram, ProtocolType.Udp);
IPEndPoint ipep = new IPEndPoint(IPAddress.Any, App.snmpTrapPort);
EndPoint ep = (EndPoint)ipep;
try
{
socket.Bind(ep);
}
catch (Exception ex)
{
IsListenTrap = false;
MessageBox.Show(string.Format("打开TRAP监听端口{0}失败\n详细信息:{1}", App.snmpTrapPort, ex.Message));
return;
}
SetTextBlockAsync(tbStatusMessage, string.Format("开始后台接收Trap消息，udp端口{0}", App.snmpTrapPort));
// Disable timeout processing. Just block until packet is received
socket.SetSocketOption(SocketOptionLevel.Socket, SocketOptionName.ReceiveTimeout, 0);
IPEndPoint peer = new IPEndPoint(IPAddress.Any, 0);
EndPoint inep = (EndPoint)peer;
while (isListenTrap)
{
// 16KB receive buffer
byte[] indata = new byte[16 * 1024];
int inlen = 0;
try
{
inlen = socket.ReceiveFrom(indata, ref inep);//inlen为udp包的负载
}
catch (Exception ex)
{
string errorMessage;
if (isListenTrap)
{
errorMessage = string.Format("异常 {0}", ex.Message);
SetTextBlockAsync(tbStatusMessage, errorMessage);
}
else
{
errorMessage = "后台接收Trap线程被强行终止";
SetTextBlockAsync(tbStatusMessage, errorMessage);
return;
}
inlen = -1;
}
if (inlen > 0)
{
// Check protocol version
int ver = SnmpPacket.GetProtocolVersion(indata, inlen);
//在snmphelper中建立静态函数分别解析V1 V2的trap。。。
if (ver == (int)SnmpVersion.Ver1)
{
// Parse SNMP Version 1 TRAP packet
SnmpV1TrapPacket pkt = new SnmpV1TrapPacket();
pkt.decode(indata, inlen);
Console.WriteLine("** SNMP Version 1 TRAP received from {0}:", inep.ToString());
Console.WriteLine("*** Trap generic: {0}", pkt.Pdu.Generic);
Console.WriteLine("*** Trap specific: {0}", pkt.Pdu.Specific);
Console.WriteLine("*** Agent address: {0}", pkt.Pdu.AgentAddress.ToString());
Console.WriteLine("*** Timestamp: {0}", pkt.Pdu.TimeStamp.ToString());
Console.WriteLine("*** VarBind count: {0}", pkt.Pdu.VbList.Count);
Console.WriteLine("*** VarBind content:");
foreach (Vb v in pkt.Pdu.VbList)
{
Console.WriteLine("**** {0} {1}: {2}", v.Oid.ToString(), SnmpConstants.GetTypeName(v.Value.Type), v.Value.ToString());
}
Console.WriteLine("** End of SNMP Version 1 TRAP data.");
}
else
{
// Parse SNMP Version 2 TRAP packet
SnmpV2Packet pkt = new SnmpV2Packet();
pkt.decode(indata, inlen);
Console.WriteLine("** SNMP Version 2 TRAP received from {0}:", inep.ToString());
if (pkt.Pdu.Type != PduType.V2Trap)
{
Console.WriteLine("*** NOT an SNMPv2 trap ****");
}
else
{
Console.WriteLine("*** Community: {0}", pkt.Community.ToString());
Console.WriteLine("*** VarBind count: {0}", pkt.Pdu.VbList.Count);
Console.WriteLine("*** VarBind content:");
foreach (Vb v in pkt.Pdu.VbList)
{
Console.WriteLine("**** {0} {1}: {2}",
v.Oid.ToString(), SnmpConstants.GetTypeName(v.Value.Type), v.Value.ToString());
}
Console.WriteLine("** End of SNMP Version 2 TRAP data.");
}
}
}
else
{
if (inlen == 0)
{
Console.WriteLine("Zero length packet received.");
}
}
}
SetTextBlockAsync(tbStatusMessage, "后台接收Trap线程结束");
}
public TrapListen()
{
using (IDbConnection connection = new SqlConnection(ConfigurationManager.ConnectionStrings["DeviceConnection"].ConnectionString))
{
mibTreeInformation = connection.Query <MibTreeInformation>("select * from TreeInformation").ToList();
towerDevices = connection.Query <TowerDevices>("select * from TowerDevices").ToList();
alarmLog = connection.Query <AlarmLogStatus>("select * from AlarmLogStatus").ToList();
Socket socket = new Socket(AddressFamily.InterNetwork, SocketType.Dgram, ProtocolType.Udp);
IPEndPoint ipep = new IPEndPoint(IPAddress.Any, 162);
EndPoint ep = (EndPoint)ipep;
socket.Bind(ep);
socket.SetSocketOption(SocketOptionLevel.Socket, SocketOptionName.ReceiveTimeout, 0);
bool run = true;
int inlen = -1;
while (run)
{
alarmLog = connection.Query <AlarmLogStatus>("select * from AlarmLogStatus").ToList();
byte[] indata = new byte[16 * 1024];
IPEndPoint peer = new IPEndPoint(IPAddress.Any, 0);
EndPoint inep = (EndPoint)peer;
try
{
inlen = socket.ReceiveFrom(indata, ref inep);
}
catch (Exception ex)
{
inlen = -1;
}
if (inlen > 0)
{
int ver = SnmpPacket.GetProtocolVersion(indata, inlen);
if (ver == 0)
{
try
{
SnmpV1TrapPacket pkt = new SnmpV1TrapPacket();
pkt.decode(indata, inlen);
new SnmpVersionOne(pkt, inep, mibTreeInformation, towerDevices, alarmLog);
}
catch (Exception e)
{
}
}
if (ver == 2 || ver == 1)
{
try
{
SnmpV2Packet pkt = new SnmpV2Packet();
pkt.decode(indata, inlen);
new SnmpVersionTwo(pkt, inep, mibTreeInformation, towerDevices, alarmLog);
}
catch (Exception e)
{
}
}
}
}
}
}
///<summary>
///Actual work in backgroundworker thread
///</summary>
private void worker_DoWork(object sender, DoWorkEventArgs e)
{
BackgroundWorker worker = sender as BackgroundWorker;
// Construct a socket and bind it to the trap manager port 10162
Socket socket = new Socket(AddressFamily.InterNetwork, SocketType.Dgram, ProtocolType.Udp);
IPEndPoint ipep = new IPEndPoint(IPAddress.Any, 10162);
EndPoint ep = (EndPoint)ipep;
socket.Bind(ep);
// Disable timeout processing. Just block until packet is received
socket.SetSocketOption(SocketOptionLevel.Socket, SocketOptionName.ReceiveTimeout, 0);
bool run = true;
int inlen;
int ver;
while (run)
{
byte[] indata = new byte[16 * 1024];
// 16KB receive buffer int inlen = 0;
IPEndPoint peer = new IPEndPoint(IPAddress.Any, 0);
EndPoint inep = (EndPoint)peer;
try
{
inlen = socket.ReceiveFrom(indata, ref inep);
}
catch (Exception ex)
{
Console.WriteLine("Exception {0}", ex.Message);
inlen = -1;
}
if (inlen > 0)
{
// Check protocol version int
ver = SnmpPacket.GetProtocolVersion(indata, inlen);
if (ver == (int)SnmpVersion.Ver1)
{
// Parse SNMP Version 1 TRAP packet
SnmpV1TrapPacket pkt = new SnmpV1TrapPacket();
pkt.decode(indata, inlen);
Console.WriteLine("** SNMP Version 1 TRAP received from {0}:", inep.ToString());
Console.WriteLine("*** Trap generic: {0}", pkt.Pdu.Generic);
Console.WriteLine("*** Trap specific: {0}", pkt.Pdu.Specific);
Console.WriteLine("*** Agent address: {0}", pkt.Pdu.AgentAddress.ToString());
Console.WriteLine("*** Timestamp: {0}", pkt.Pdu.TimeStamp.ToString());
Console.WriteLine("*** VarBind count: {0}", pkt.Pdu.VbList.Count);
Console.WriteLine("*** VarBind content:");
foreach (Vb v in pkt.Pdu.VbList)
{
Console.WriteLine("**** {0} {1}: {2}", v.Oid.ToString(), SnmpConstants.GetTypeName(v.Value.Type), v.Value.ToString());
string voltage = v.Value.ToString();
double max = 3.3;
string[] values = voltage.Split('V');
_worker.ReportProgress((int)Math.Floor((double)((double.Parse(values[0], CultureInfo.InvariantCulture) / max * 100))));
currentVoltage = voltage;
double test = double.Parse(values[0]);
voltageLine.Points.Add(new DataPoint(double.Parse(pkt.Pdu.TimeStamp.ToString()), double.Parse(values[0], CultureInfo.InvariantCulture)));
model.RefreshPlot(true);
}
Console.WriteLine("** End of SNMP Version 1 TRAP data.");
}
}
else
{
if (inlen == 0)
{
Console.WriteLine("Zero length packet received.");
}
}
}
Yield(1000000);
}
public void trapReceiver()
{
Socket socket = new Socket(AddressFamily.InterNetwork, SocketType.Dgram, ProtocolType.Udp);
IPEndPoint ipep = new IPEndPoint(IPAddress.Any, 162);
EndPoint ep = (EndPoint)ipep;
socket.Bind(ep);
socket.SetSocketOption(SocketOptionLevel.Socket, SocketOptionName.ReceiveTimeout, 0);
bool run = true;
int inlen = -1;
while (run)
{
byte[] indata = new byte[16 * 1024];
IpAddress addressIP = new IpAddress(address);
IPEndPoint peer = new IPEndPoint((IPAddress)addressIP, 0);
EndPoint inep = (EndPoint)peer;
try
{
inlen = socket.ReceiveFrom(indata, ref inep);
}
catch (Exception ex)
{
Console.WriteLine("Exception {0}", ex.Message);
inlen = -1;
}
if (inlen > 0)
{
int ver = SnmpPacket.GetProtocolVersion(indata, inlen);
if (ver == (int)SnmpVersion.Ver1)
{
SnmpV1TrapPacket pkt = new SnmpV1TrapPacket();
string date = DateTime.Now.ToString("yyyy-MM-dd HH:mm:ss");
List <VarBind> varBindContentList = new List <VarBind>();
pkt.decode(indata, inlen);
foreach (Vb v in pkt.Pdu.VbList)
{
varBindContentList.Add(new VarBind(v.Oid.ToString(), SnmpConstants.GetTypeName(v.Value.Type), v.Value.ToString()));
}
string ruleName = "NULL";
varBindListPerTrap.Add(trapCounter, varBindContentList);
windowHandler.addTrap(getGenericType(pkt.Pdu.Generic), pkt.Pdu.AgentAddress.ToString(), date, ruleName);
trapCounter++;
}
else
{
SnmpV2Packet pkt = new SnmpV2Packet();
string date = DateTime.Now.ToString("yyyy-MM-dd HH:mm:ss");
List <VarBind> varBindContentList = new List <VarBind>();
pkt.decode(indata, inlen);
if ((SnmpSharpNet.PduType)pkt.Pdu.Type != PduType.V2Trap)
{
}
else
{
foreach (Vb v in pkt.Pdu.VbList)
{
varBindContentList.Add(new VarBind(v.Oid.ToString(), SnmpConstants.GetTypeName(v.Value.Type), v.Value.ToString()));
}
string ruleName = "NULL";
varBindListPerTrap.Add(trapCounter, varBindContentList);
windowHandler.addTrap(pkt.Pdu.TrapObjectID.ToString(), "?", date, ruleName);
trapCounter++;
}
}
}
else
{
if (inlen == 0)
{
Console.WriteLine("Zero length packet received.");
}
}
}
}
private void button1_Click(object sender, EventArgs e)
{
// Construct a socket and bind it to the trap manager port 162
Socket socket = new Socket(AddressFamily.InterNetwork, SocketType.Dgram, ProtocolType.Udp);
IPEndPoint ipep = new IPEndPoint(IPAddress.Any, 162);
EndPoint ep = (EndPoint)ipep;
socket.Bind(ep);
// Disable timeout processing. Just block until packet is received
socket.SetSocketOption(SocketOptionLevel.Socket, SocketOptionName.ReceiveTimeout, 0);
bool run = true;
int inlen = -1;
while (run)
{
Application.DoEvents();
Thread.Sleep(100);
byte[] indata = new byte[16 * 1024];
// 16KB receive buffer int inlen = 0;
IPEndPoint peer = new IPEndPoint(IPAddress.Any, 0);
EndPoint inep = (EndPoint)peer;
try
{
inlen = socket.ReceiveFrom(indata, ref inep);
}
catch (Exception ex)
{
Console.WriteLine("Exception {0}", ex.Message);
inlen = -1;
}
if (inlen > 0)
{
// Check protocol version int
int ver = SnmpPacket.GetProtocolVersion(indata, inlen);
if (ver == (int)SnmpVersion.Ver1)
{
// Parse SNMP Version 1 TRAP packet
SnmpV1TrapPacket pkt = new SnmpV1TrapPacket();
pkt.decode(indata, inlen);
Console.WriteLine("** SNMP Version 1 TRAP received from {0}:", inep.ToString());
Console.WriteLine("*** Trap generic: {0}", pkt.Pdu.Generic);
Console.WriteLine("*** Trap specific: {0}", pkt.Pdu.Specific);
Console.WriteLine("*** Agent address: {0}", pkt.Pdu.AgentAddress.ToString());
Console.WriteLine("*** Timestamp: {0}", pkt.Pdu.TimeStamp.ToString());
Console.WriteLine("*** VarBind count: {0}", pkt.Pdu.VbList.Count);
Console.WriteLine("*** VarBind content:");
foreach (Vb v in pkt.Pdu.VbList)
{
Console.WriteLine("**** {0} {1}: {2}", v.Oid.ToString(), SnmpConstants.GetTypeName(v.Value.Type), v.Value.ToString());
textBox1.Text += "\n" + v.Oid.ToString() + "|" + SnmpConstants.GetTypeName(v.Value.Type) + "|" + v.Value.ToString();
}
Console.WriteLine("** End of SNMP Version 1 TRAP data.");
}
else
{
// Parse SNMP Version 2 TRAP packet
SnmpV2Packet pkt = new SnmpV2Packet();
pkt.decode(indata, inlen);
Console.WriteLine("** SNMP Version 2 TRAP received from {0}:", inep.ToString());
if ((SnmpSharpNet.PduType)pkt.Pdu.Type != PduType.V2Trap)
{
Console.WriteLine("*** NOT an SNMPv2 trap ****");
}
else
{
Console.WriteLine("*** Community: {0}", pkt.Community.ToString());
Console.WriteLine("*** VarBind count: {0}", pkt.Pdu.VbList.Count);
Console.WriteLine("*** VarBind content:");
foreach (Vb v in pkt.Pdu.VbList)
{
Console.WriteLine("**** {0} {1}: {2}",
v.Oid.ToString(), SnmpConstants.GetTypeName(v.Value.Type), v.Value.ToString());
}
Console.WriteLine("** End of SNMP Version 2 TRAP data.");
}
}
}
else
{
if (inlen == 0)
{
Console.WriteLine("Zero length packet received.");
}
}
}
}
public static void Main(string[] args)
{
// Construct a socket and bind it to the trap manager port 162
Socket socket = new Socket(AddressFamily.InterNetwork, SocketType.Dgram, ProtocolType.Udp);
IPEndPoint ipep = new IPEndPoint(IPAddress.Any, 162);
EndPoint ep = (EndPoint)ipep;
socket.Bind(ep);
// Disable timeout processing. Just block until packet is received
socket.SetSocketOption(SocketOptionLevel.Socket, SocketOptionName.ReceiveTimeout, 0);
bool run = true;
int inlen = -1;
while (run)
{
byte[] indata = new byte[16 * 1024];
// 16KB receive buffer int inlen = 0;
IPEndPoint peer = new IPEndPoint(IPAddress.Any, 0);
EndPoint inep = (EndPoint)peer;
try
{
inlen = socket.ReceiveFrom(indata, ref inep);
}
catch (Exception ex)
{
Console.WriteLine("Exception {0}", ex.Message);
inlen = -1;
}
if (inlen > 0)
{
using (SqlConnection conn = new SqlConnection())
{
conn.ConnectionString = "Server=ANDREW-PC\\SQLEXPRESS;Database=TestSNMPDatabase;Trusted_Connection=true;MultipleActiveResultSets=True";
conn.Open();
// Parse SNMP Version 1 TRAP packet
SnmpV1TrapPacket pkt = new SnmpV1TrapPacket();
pkt.decode(indata, inlen);
Console.WriteLine("community=" + pkt.Community);
Console.WriteLine("enterprise=" + pkt.Pdu.Enterprise);
Console.WriteLine("enterprise_mib_name=");
Console.WriteLine("uptime=" + pkt.Pdu.TimeStamp.ToString());
Console.WriteLine("agent_ip=" + pkt.Pdu.AgentAddress.ToString());
Console.WriteLine("generic_num=" + pkt.Pdu.Generic);
Console.WriteLine("specific_num=" + pkt.Pdu.Specific);
Console.WriteLine("version=" + pkt.Version);
Console.WriteLine("generic_name=" + GenericName(pkt.Pdu.Generic));
Console.WriteLine("type=" + pkt.Pdu.Type);
string rawMessage = "";
string friendlyMessage = "";
List <string> messages = new List <string>();
List <string> friendlyMessageList = new List <string>();
string[] Oidtables = { "OidTable" };
string[] MIBtables = { "EnterpriseMibName" };
string enterprise_num = pkt.Pdu.Enterprise.ToString().Split('.')[6];
string mibName = ReadMIBTables(MIBtables, conn, enterprise_num);
bool first = true;
int ignoreVal = 0;
foreach (Vb v in pkt.Pdu.VbList)
{
int varValue = Int32.Parse(v.Oid.ToString().Split('.').Last());
Console.WriteLine("**** {0} {1}: {2}", v.Oid.ToString(), SnmpConstants.GetTypeName(v.Value.Type), v.Value.ToString());
messages.Add("var" + varValue.ToString("D2") + "_oid=" + v.Oid);
messages.Add("var" + varValue.ToString("D2") + "_value=" + v.Value.ToString());
if (ReadOidTables(Oidtables, conn, v.Oid.ToString()))
{
friendlyMessageList.Add("var" + varValue.ToString("D2") + "_oid=" + v.Oid);
friendlyMessageList.Add("var" + varValue.ToString("D2") + "_value=" + v.Value.ToString());
}
//check first OID in ignore table
if (first)
{
ignoreVal = CheckIgnore(Oidtables, conn, v.Oid.ToString());
first = false;
}
}
rawMessage = string.Join(",", messages);
friendlyMessage = string.Join(",", friendlyMessageList);
Console.WriteLine("Friendly message: " + friendlyMessage);
string sql = "INSERT INTO SNMPTable ([SNMP version],Community,[Enterprise OID],enterprise_mib_name," +
"[Agent IP],[Generic Number],[Friendly Message],[Raw Message],Timestamp,Ignore) " +
"VALUES (@0, @1, @2, @3, @4, @5, @6, @7, @8, @9)";
SqlCommand insertCommand = new SqlCommand(sql, conn);
int max = 8000; //max length of varchar in sql server
insertCommand.Parameters.Add("@0", SqlDbType.VarChar, max).Value = pkt.Version.ToString();
insertCommand.Parameters.Add("@1", SqlDbType.VarChar, max).Value = pkt.Community.ToString();
insertCommand.Parameters.Add("@2", SqlDbType.VarChar, max).Value = pkt.Pdu.Enterprise.ToString();
insertCommand.Parameters.Add("@3", SqlDbType.VarChar, max).Value = mibName;
insertCommand.Parameters.Add("@4", SqlDbType.VarChar, max).Value = pkt.Pdu.AgentAddress.ToString();
insertCommand.Parameters.Add("@5", SqlDbType.VarChar, max).Value = pkt.Pdu.Generic.ToString();
insertCommand.Parameters.Add("@6", SqlDbType.VarChar, max).Value = friendlyMessage;
insertCommand.Parameters.Add("@7", SqlDbType.VarChar, max).Value = rawMessage;
insertCommand.Parameters.Add("@8", SqlDbType.VarChar, max).Value = DateTime.Now.ToString("yyyyMMdd h:mm:ss tt");
insertCommand.Parameters.Add("@9", SqlDbType.Int).Value = ignoreVal;
insertCommand.ExecuteNonQuery();
conn.Close();
Console.WriteLine("** End of SNMP Version 1 TRAP data.");
}
}
else
{
if (inlen == 0)
{
Console.WriteLine("Zero length packet received.");
}
}
}
}
public void initializeTrapListener(DataGridView table, RichTextBox rtb)
{
run = true;
int inlen = -1;
while (run)
{
byte[] indata = new byte[16 * 1024];
// 16KB receive buffer int inlen = 0;
IPEndPoint peer = new IPEndPoint(IPAddress.Any, 0);
EndPoint inep = (EndPoint)peer;
try
{
inlen = socket.ReceiveFrom(indata, ref inep);
}
catch (Exception ex) { }
if (inlen > 0)
{
int ver = SnmpPacket.GetProtocolVersion(indata, inlen);
if (ver == (int)SnmpVersion.Ver1)
{
// Parse SNMP Version 1 TRAP packet
SnmpV1TrapPacket pkt = new SnmpV1TrapPacket();
pkt.decode(indata, inlen);
int n = 0;
table.Invoke(new Action(delegate() { n = table.Rows.Add(); }));
string oid = "." + pkt.Pdu.Enterprise.ToString() + "." + pkt.Pdu.Specific.ToString();
var objectName = Program.mibObjects.FirstOrDefault(x => x.Value == oid).Key;
if (objectName != null)
{
table.Invoke(new Action(delegate() { table.Rows[n].Cells[0].Value = "Specific: " + pkt.Pdu.Specific + "; " + objectName; }));
}
else
{
table.Invoke(new Action(delegate() { table.Rows[n].Cells[0].Value = "Specific: " + pkt.Pdu.Specific + "; " + oid; }));
}
table.Invoke(new Action(delegate() { table.Rows[n].Cells[1].Value = pkt.Pdu.AgentAddress.ToString(); }));
table.Invoke(new Action(delegate() { table.Rows[n].Cells[2].Value = pkt.Pdu.TimeStamp.ToString(); }));
table.Invoke(new Action(delegate() { table.FirstDisplayedScrollingRowIndex = table.RowCount - 1; }));
table.Invoke(new Action(delegate() { table.Rows[table.Rows.Count - 1].Selected = true; }));
rtb.Invoke(new Action(delegate() { rtb.Clear(); }));
writeToRtb("Source: " + pkt.Pdu.AgentAddress.ToString() + "\n", rtb);
writeToRtb("Timestamp: " + pkt.Pdu.TimeStamp.ToString() + "\n", rtb);
writeToRtb("SNMP Version: " + pkt.Version + "\n", rtb);
writeToRtb("Enterprise: " + pkt.Pdu.Enterprise + "\n", rtb);
writeToRtb("Community: " + pkt.Community + "\n", rtb);
writeToRtb("Specific: " + pkt.Pdu.Specific + "\n", rtb);
writeToRtb("Generic: " + pkt.Pdu.Generic + "\n", rtb);
//writeToRtb("Description: " + "tu opis kij wie skad kij wie jak" + "\n", rtb);
}
else
{
/*
* // Parse SNMP Version 2 TRAP packet
* SnmpV2Packet pkt = new SnmpV2Packet();
* pkt.decode(indata, inlen);
* Console.WriteLine("** SNMP Version 2 TRAP received from {0}:", inep.ToString());
* if ((SnmpSharpNet.PduType)pkt.Pdu.Type != PduType.V2Trap)
* {
* Console.WriteLine("*** NOT an SNMPv2 trap ****");
* }
* else
* {
* Console.WriteLine("*** Community: {0}", pkt.Community.ToString());
* Console.WriteLine("*** VarBind count: {0}", pkt.Pdu.VbList.Count);
* Console.WriteLine("*** VarBind content:");
* foreach (Vb v in pkt.Pdu.VbList)
* {
* Console.WriteLine("**** {0} {1}: {2}",
* v.Oid.ToString(), SnmpConstants.GetTypeName(v.Value.Type), v.Value.ToString());
* }
* Console.WriteLine("** End of SNMP Version 2 TRAP data.");
* }
*/
}
}
else
{
//if (inlen == 0)
//Console.WriteLine("Zero length packet received.");
}
}
}
public void Listen()
{
Socket socket = new Socket(AddressFamily.InterNetwork, SocketType.Dgram, ProtocolType.Udp);
IPEndPoint ipep = new IPEndPoint(IPAddress.Any, 11000);
EndPoint ep = (EndPoint)ipep;
socket.Bind(ep);
socket.SetSocketOption(SocketOptionLevel.Socket, SocketOptionName.ReceiveTimeout, 0);
bool run = true;
int inlen = -1;
while (run)
{
byte[] indata = new byte[1024 * 1024];
// 16KB receive buffer int inlen = 0;
IPEndPoint peer = new IPEndPoint(IPAddress.Any, 0);
EndPoint inep = (EndPoint)peer;
try
{
inlen = socket.ReceiveFrom(indata, ref inep);
}
catch (Exception ex)
{
Console.WriteLine("Exception {0}", ex.Message);
inlen = -1;
}
if (inlen > 0)
{
// Check protocol version int
int ver = SnmpPacket.GetProtocolVersion(indata, inlen);
if (ver == (int)SnmpVersion.Ver1)
{
// Parse SNMP Version 1 TRAP packet
SnmpV1TrapPacket pkt = new SnmpV1TrapPacket();
pkt.decode(indata, inlen);
_data.Cores = new List <CpuCore>();
for (var i = 0; i < pkt.Pdu.VbList.Count; ++i)
{
_data.Cores.Add(new CpuCore {
Index = i, Load = int.Parse(pkt.Pdu.VbList[i].Value.ToString())
});
}
//foreach (Vb v in pkt.Pdu.VbList)
//{
// Console.WriteLine("**** {0} {1}: {2}", v.Oid.ToString(), SnmpConstants.GetTypeName(v.Value.Type), v.Value.ToString());
//}
//Console.WriteLine("** End of SNMP Version 1 TRAP data.");
}
else
{
// Parse SNMP Version 2 TRAP packet
SnmpV2Packet pkt = new SnmpV2Packet();
pkt.decode(indata, inlen);
Console.WriteLine("** SNMP Version 2 TRAP received from {0}:", inep.ToString());
if ((SnmpSharpNet.PduType)pkt.Pdu.Type != PduType.V2Trap)
{
Console.WriteLine("*** NOT an SNMPv2 trap ****");
}
else
{
_data.Cores = new List <CpuCore>();
for (var i = 0; i < pkt.Pdu.VbList.Count; ++i)
{
_data.Cores.Add(new CpuCore {
Index = i, Load = int.Parse(pkt.Pdu.VbList[i].ToString())
});
}
}
}
}
else
{
if (inlen == 0)
{
Console.WriteLine("Zero length packet received.");
}
}
}
}
/// <summary>
/// Thread that will keep listening for traps
/// </summary>
public void TrapThread()
{
// Construct a socket and bind it to the trap manager port 162
Socket socket = new Socket(AddressFamily.InterNetwork, SocketType.Dgram, ProtocolType.Udp);
IPEndPoint ipep = new IPEndPoint(IPAddress.Any, 16009);
EndPoint ep = (EndPoint)ipep;
socket.Bind(ep);
// Disable timeout processing. Just block until packet is received
socket.SetSocketOption(SocketOptionLevel.Socket, SocketOptionName.ReceiveTimeout, 0);
run_trap_thread = true;
int inlen = -1;
while (run_trap_thread)
{
byte[] indata = new byte[16 * 1024];
// 16KB receive buffer int inlen = 0;
IPEndPoint peer = new IPEndPoint(IPAddress.Any, 0);
EndPoint inep = (EndPoint)peer;
inlen = socket.ReceiveFrom(indata, ref inep);
if (inlen > 0)
{
// Check protocol version int
int ver = SnmpPacket.GetProtocolVersion(indata, inlen);
// Parse SNMP Version 1 TRAP packet
SnmpV1TrapPacket pkt = new SnmpV1TrapPacket();
pkt.decode(indata, inlen);
string underAttackOid = "1";
string foundEnemyOid = "2";
string headOid = "5.1";
string legsOid = "5.2";
string armsOid = "5.3";
foreach (Vb v in pkt.Pdu.VbList)
{
Debug.Log("for each vb");
switch (v.Oid.ToString())
{
case "1.3.2.5." + "1":
underAttack = int.Parse(v.Value.ToString());
break;
// found enemy
case "1.3.2.5." + "2":
foundEnemy = int.Parse(v.Value.ToString());
break;
// head bellow 50
case "1.3.2.5." + "5.1":
healthWarning = 1;
HeadHealth = int.Parse(v.Value.ToString());
break;
// head bellow 25
case "1.3.2.5." + "5.2":
healthWarning = 1;
LegsHealth = int.Parse(v.Value.ToString());
break;
// head destroyed
case "1.3.2.5." + "5.3":
healthWarning = 1;
ArmHealth = int.Parse(v.Value.ToString());
break;
}
}
}
else
{
if (inlen == 0)
{
Console.WriteLine("Zero length packet received.");
}
}
}
Debug.Log(" trap thread EXITT");
}
public void TrapReceivedSNMPAgentNotify()
{
runTrap = true;
if (isNotBindedPort)
{
socket = new Socket(AddressFamily.InterNetwork, SocketType.Dgram, ProtocolType.Udp);
IPEndPoint ipep = new IPEndPoint(IPAddress.Any, 162);
EndPoint ep = (EndPoint)ipep;
socket.Bind(ep);
socket.SetSocketOption(SocketOptionLevel.Socket, SocketOptionName.ReceiveTimeout, 0);
isNotBindedPort = false;
}
int inlen = -1;
while (runTrap)
{
DateTime time = DateTime.Now;
byte[] indata = new byte[16 * 1024];
IPEndPoint peer = new IPEndPoint(IPAddress.Any, 0);
EndPoint inep = (EndPoint)peer;
try
{
inlen = socket.ReceiveFrom(indata, ref inep);
time = DateTime.Now;
}
catch (Exception ex)
{
inlen = -1;
}
if (inlen > 0)
{
int ver = SnmpPacket.GetProtocolVersion(indata, inlen);
if (ver == (int)SnmpVersion.Ver1)
{
SnmpV1TrapPacket pkt = new SnmpV1TrapPacket();
pkt.decode(indata, inlen);
foreach (Vb v in pkt.Pdu.VbList)
{
addRowToAgentNotify(pkt.Pdu.AgentAddress.ToString(), v.Oid.ToString(), v.Value.ToString(),
time, pkt.Pdu.Generic);
}
}
else
{
// Parse SNMP Version 2 TRAP packet
SnmpV2Packet pkt = new SnmpV2Packet();
pkt.decode(indata, inlen);
if ((PduType)pkt.Pdu.Type != PduType.V2Trap)
{
}
else
{
foreach (Vb v in pkt.Pdu.VbList)
{
addRowToAgentNotify("", v.Oid.ToString(), v.Value.ToString(),
time, "");
}
}
}
}
}
}