private void SNMP_RECEIVE()
{
socket = new Socket(AddressFamily.InterNetwork, SocketType.Dgram, ProtocolType.Udp);
IPEndPoint ipep = new IPEndPoint(IPAddress.Any, 162);
EndPoint ep = (EndPoint)ipep;
this.Dispatcher.Invoke((Action)(() =>
{
button4.IsEnabled = false;
}));
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)
{
// Check protocol version int
int ver = SnmpSharpNet.SnmpPacket.GetProtocolVersion(indata, inlen);
if (ver == (int)SnmpSharpNet.SnmpVersion.Ver1)
{
// Parse SNMP Version 1 TRAP packet
SnmpSharpNet.SnmpV1TrapPacket pkt = new SnmpSharpNet.SnmpV1TrapPacket();
pkt.decode(indata, inlen);
this.Dispatcher.Invoke((Action)(() =>
{
consoleBox.Items.Add(string.Format("** SNMP Version 1 TRAP received from {0}:", inep.ToString()));
consoleBox.Items.Add(string.Format("*** Trap generic: {0}", translateReceiver(pkt.Pdu.Generic)));
consoleBox.Items.Add(string.Format("*** Trap specific: {0}", pkt.Pdu.Specific));
consoleBox.Items.Add(string.Format("*** Agent address: {0}", pkt.Pdu.AgentAddress.ToString()));
consoleBox.Items.Add(string.Format("*** Timestamp: {0}", pkt.Pdu.TimeStamp.ToString()));
consoleBox.Items.Add(string.Format("*** VarBind count: {0}", pkt.Pdu.VbList.Count));
consoleBox.Items.Add(string.Format("*** VarBind content:"));
}));
foreach (SnmpSharpNet.Vb v in pkt.Pdu.VbList)
{
this.Dispatcher.Invoke((Action)(() =>
{
consoleBox.Items.Add(string.Format("**** {0} {1}: {2}", v.Oid.ToString(), SnmpSharpNet.SnmpConstants.GetTypeName(v.Value.Type), v.Value.ToString()));
}));
}
this.Dispatcher.Invoke((Action)(() =>
{
consoleBox.Items.Add("** End of SNMP Version 1 TRAP data.");
}));
}
else
{
// Parse SNMP Version 2 TRAP packet
SnmpSharpNet.SnmpV2Packet pkt = new SnmpSharpNet.SnmpV2Packet();
pkt.decode(indata, inlen);
this.Dispatcher.Invoke((Action)(() =>
{
consoleBox.Items.Add(string.Format("** SNMP Version 2 TRAP received from {0}:", inep.ToString()));
}));
if ((SnmpSharpNet.PduType)pkt.Pdu.Type != SnmpSharpNet.PduType.V2Trap)
{
this.Dispatcher.Invoke((Action)(() =>
{
consoleBox.Items.Add("*** NOT an SNMPv2 trap ****");
}));
}
else
{
this.Dispatcher.Invoke((Action)(() =>
{
consoleBox.Items.Add(string.Format("*** Community: {0}", pkt.Community.ToString()));
consoleBox.Items.Add(string.Format("*** VarBind count: {0}", pkt.Pdu.VbList.Count));
consoleBox.Items.Add("*** VarBind content:");
}));
foreach (SnmpSharpNet.Vb v in pkt.Pdu.VbList)
{
this.Dispatcher.Invoke((Action)(() =>
{
consoleBox.Items.Add(string.Format("**** {0} {1}: {2}",
v.Oid.ToString(), SnmpSharpNet.SnmpConstants.GetTypeName(v.Value.Type), v.Value.ToString()));
}));
}
this.Dispatcher.Invoke((Action)(() =>
{
consoleBox.Items.Add("** End of SNMP Version 2 TRAP data.");
}));
}
}
}
else
{
if (inlen == 0)
{
this.Dispatcher.Invoke((Action)(() =>
{
consoleBox.Items.Add("Zero length packet received.");
}));
}
}
}
}
private void SNMP_RECEIVE()
{
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)
{
// Check protocol version int
int ver = SnmpSharpNet.SnmpPacket.GetProtocolVersion(indata, inlen);
if (ver == (int)SnmpSharpNet.SnmpVersion.Ver1)
{
// Parse SNMP Version 1 TRAP packet
SnmpSharpNet.SnmpV1TrapPacket pkt = new SnmpSharpNet.SnmpV1TrapPacket();
pkt.decode(indata, inlen);
this.Dispatcher.Invoke((Action)(() =>
{
console.Items.Add(string.Format("** SNMP Version 1 TRAP received from {0}:", inep.ToString()));
console.Items.Add(string.Format("*** Trap generic: {0}", translateReceiver(pkt.Pdu.Generic)));
console.Items.Add(string.Format("*** Trap specific: {0}", pkt.Pdu.Specific));
console.Items.Add(string.Format("*** Agent address: {0}", pkt.Pdu.AgentAddress.ToString()));
console.Items.Add(string.Format("*** Timestamp: {0}", pkt.Pdu.TimeStamp.ToString()));
console.Items.Add(string.Format("*** VarBind count: {0}", pkt.Pdu.VbList.Count));
console.Items.Add(string.Format("*** VarBind content:"));
}));
foreach (SnmpSharpNet.Vb v in pkt.Pdu.VbList)
{
this.Dispatcher.Invoke((Action)(() =>
{
console.Items.Add(string.Format("**** {0} {1}: {2}", v.Oid.ToString(), SnmpSharpNet.SnmpConstants.GetTypeName(v.Value.Type), v.Value.ToString()));
}));
}
this.Dispatcher.Invoke((Action)(() =>
{
console.Items.Add("** End of SNMP Version 1 TRAP data.");
}));
}
else
{
// Parse SNMP Version 2 TRAP packet
SnmpSharpNet.SnmpV2Packet pkt = new SnmpSharpNet.SnmpV2Packet();
pkt.decode(indata, inlen);
this.Dispatcher.Invoke((Action)(() =>
{
console.Items.Add(string.Format("** SNMP Version 2 TRAP received from {0}:", inep.ToString()));
}));
if ((SnmpSharpNet.PduType)pkt.Pdu.Type != SnmpSharpNet.PduType.V2Trap)
{
this.Dispatcher.Invoke((Action)(() =>
{
console.Items.Add("*** NOT an SNMPv2 trap ****");
}));
}
else
{
this.Dispatcher.Invoke((Action)(() =>
{
console.Items.Add(string.Format("*** Community: {0}", pkt.Community.ToString()));
console.Items.Add(string.Format("*** VarBind count: {0}", pkt.Pdu.VbList.Count));
console.Items.Add("*** VarBind content:");
}));
foreach (SnmpSharpNet.Vb v in pkt.Pdu.VbList)
{
this.Dispatcher.Invoke((Action)(() =>
{
console.Items.Add(string.Format("**** {0} {1}: {2}",
v.Oid.ToString(), SnmpSharpNet.SnmpConstants.GetTypeName(v.Value.Type), v.Value.ToString()));
}));
}
this.Dispatcher.Invoke((Action)(() =>
{
console.Items.Add("** End of SNMP Version 2 TRAP data.");
}));
}
}
}
else
{
if (inlen == 0)
this.Dispatcher.Invoke((Action)(() =>
{
console.Items.Add("Zero length packet received.");
}));
}
}
}
