private async void Work()
{
DisplayStatusMessage = false;
IsWorking = true;
// Measure time
StartTime = DateTime.Now;
stopwatch.Start();
dispatcherTimer.Tick += DispatcherTimer_Tick;
dispatcherTimer.Interval = new TimeSpan(0, 0, 0, 0, 100);
dispatcherTimer.Start();
EndTime = null;
QueryResult.Clear();
Responses = 0;
// Try to parse the string into an IP-Address
IPAddress.TryParse(Host, out IPAddress ipAddress);
try
{
// Try to resolve the hostname
if (ipAddress == null)
{
IPHostEntry ipHostEntrys = await Dns.GetHostEntryAsync(Host);
foreach (IPAddress ipAddr in ipHostEntrys.AddressList)
{
if (ipAddr.AddressFamily == AddressFamily.InterNetwork && SettingsManager.Current.SNMP_ResolveHostnamePreferIPv4)
{
ipAddress = ipAddr;
continue;
}
else if (ipAddr.AddressFamily == AddressFamily.InterNetworkV6 && !SettingsManager.Current.SNMP_ResolveHostnamePreferIPv4)
{
ipAddress = ipAddr;
continue;
}
}
// Fallback --> If we could not resolve our prefered ip protocol for the hostname
if (ipAddress == null)
{
foreach (IPAddress ipAddr in ipHostEntrys.AddressList)
{
ipAddress = ipAddr;
continue;
}
}
}
}
catch (SocketException) // This will catch DNS resolve errors
{
Finished();
StatusMessage = string.Format(Application.Current.Resources["String_CouldNotResolveHostnameFor"] as string, Host);
DisplayStatusMessage = true;
return;
}
// SNMP...
SNMPOptions snmpOptions = new SNMPOptions()
{
Port = SettingsManager.Current.SNMP_Port,
Timeout = SettingsManager.Current.SNMP_Timeout
};
SNMP snmp = new SNMP();
snmp.Received += Snmp_Received;
snmp.Timeout += Snmp_Timeout;
snmp.Error += Snmp_Error;
snmp.UserHasCanceled += Snmp_UserHasCanceled;
snmp.Complete += Snmp_Complete;
switch (Mode)
{
case SNMPMode.Get:
if (Version != SNMPVersion.v3)
{
snmp.Getv1v2cAsync(Version, ipAddress, Community, OID, snmpOptions);
}
else
{
snmp.Getv3Async(ipAddress, OID, Security, Username, AuthenticationProvider, Auth, PrivacyProvider, Priv, snmpOptions);
}
break;
case SNMPMode.Walk:
if (Version != SNMPVersion.v3)
{
snmp.Walkv1v2cAsync(Version, ipAddress, Community, OID, SettingsManager.Current.SNMP_WalkMode, snmpOptions);
}
else
{
snmp.Walkv3Async(ipAddress, OID, Security, Username, AuthenticationProvider, Auth, PrivacyProvider, Priv, SettingsManager.Current.SNMP_WalkMode, snmpOptions);
}
break;
case SNMPMode.Set:
if (Version != SNMPVersion.v3)
{
snmp.Setv1v2cAsync(Version, ipAddress, Community, OID, Data, snmpOptions);
}
else
{
snmp.Setv3Async(ipAddress, OID, Security, Username, AuthenticationProvider, Auth, PrivacyProvider, Priv, Data, snmpOptions);
}
break;
}
// Add to history...
AddHostToHistory(Host);
AddOIDToHistory(OID);
}