private bool GetIsForwardingEnabled()
{
// /proc/sys/net/ipv4/conf/<name>/forwarding
string path = Path.Combine(NetworkFiles.Ipv4ConfigFolder, _linuxNetworkInterface.Name, NetworkFiles.ForwardingFileName);
return(StringParsingHelpers.ParseRawIntFile(path) == 1);
}
public LinuxIPGlobalStatistics(bool ipv4)
{
if (ipv4)
{
_table = StringParsingHelpers.ParseIPv4GlobalStatisticsFromSnmpFile(NetworkFiles.SnmpV4StatsFile);
_numRoutes = StringParsingHelpers.ParseNumRoutesFromRouteFile(NetworkFiles.Ipv4RouteFile);
_numInterfaces = StringParsingHelpers.ParseNumIPInterfaces(NetworkFiles.Ipv4ConfigFolder);
}
else
{
_table = StringParsingHelpers.ParseIPv6GlobalStatisticsFromSnmp6File(NetworkFiles.SnmpV6StatsFile);
_numRoutes = StringParsingHelpers.ParseNumRoutesFromRouteFile(NetworkFiles.Ipv6RouteFile);
_numInterfaces = StringParsingHelpers.ParseNumIPInterfaces(NetworkFiles.Ipv6ConfigFolder);
// /proc/sys/net/ipv6/conf/default/forwarding
string forwardingConfigFile = Path.Combine(NetworkFiles.Ipv6ConfigFolder,
NetworkFiles.DefaultNetworkInterfaceFileName,
NetworkFiles.ForwardingFileName);
_table.Forwarding = StringParsingHelpers.ParseRawIntFile(forwardingConfigFile) == 1;
// snmp6 does not include Default TTL info. Read it from snmp.
_table.DefaultTtl = StringParsingHelpers.ParseDefaultTtlFromFile(NetworkFiles.SnmpV4StatsFile);
}
_numIPAddresses = GetNumIPAddresses();
}
private bool GetIsForwardingEnabled()
{
string[] paths = new string[]
{
// /proc/sys/net/ipv4/conf/<name>/forwarding
Path.Join(NetworkFiles.Ipv4ConfigFolder, _linuxNetworkInterface.Name, NetworkFiles.ForwardingFileName),
// Fall back to global forwarding config /proc/sys/net/ipv4/ip_forward
NetworkFiles.Ipv4GlobalForwardingFile
};
for (int i = 0; i < paths.Length; i++)
{
// Actual layout is specific to kernel version and it could change over time.
// If the kernel version we're running on doesn't have this files we don't want to fail, but instead continue. We've hit this exceptions in Windows Subsystem for Linux in the past.
// Also the /proc directory may not be mounted or accessible for other reasons. Therefore we catch these potential exceptions and return false instead.
try
{
return(StringParsingHelpers.ParseRawIntFile(paths[i]) == 1);
}
catch (IOException) { }
catch (UnauthorizedAccessException) { }
}
return(false);
}
public LinuxIPInterfaceStatistics(string name)
{
_table = StringParsingHelpers.ParseInterfaceStatisticsTableFromFile(NetworkFiles.InterfaceListingFile, name);
// sys/class/net/<interfacename>/tx_queue_len
string transmitQueueLengthFilePath = Path.Combine(NetworkFiles.SysClassNetFolder, name, NetworkFiles.TransmitQueueLengthFileName);
_transmitQueueLength = StringParsingHelpers.ParseRawIntFile(transmitQueueLengthFilePath);
}
private int GetMtu()
{
string path = path = Path.Combine(NetworkFiles.SysClassNetFolder, _linuxNetworkInterface.Name, NetworkFiles.MtuFileName);
return(StringParsingHelpers.ParseRawIntFile(path));
}