|
public static IsLoopback ( |
||
| address | ||
| return | bool | |
/// <summary>Indicates whether to use the proxy server for the specified host.</summary>
/// <returns>true if the proxy server should not be used for <paramref name="host" />; otherwise, false.</returns>
/// <param name="host">The <see cref="T:System.Uri" /> instance of the host to check for proxy use. </param>
public bool IsBypassed(System.Uri host)
{
if (host == null)
{
throw new ArgumentNullException("host");
}
if (host.IsLoopback && this.bypassOnLocal)
{
return(true);
}
if (this.address == null)
{
return(true);
}
string host2 = host.Host;
if (this.bypassOnLocal && host2.IndexOf('.') == -1)
{
return(true);
}
if (!this.bypassOnLocal)
{
if (string.Compare(host2, "localhost", true, CultureInfo.InvariantCulture) == 0)
{
return(true);
}
if (string.Compare(host2, "loopback", true, CultureInfo.InvariantCulture) == 0)
{
return(true);
}
IPAddress addr = null;
if (IPAddress.TryParse(host2, out addr) && IPAddress.IsLoopback(addr))
{
return(true);
}
}
if (this.bypassList == null || this.bypassList.Count == 0)
{
return(false);
}
bool result;
try
{
string input = host.Scheme + "://" + host.Authority;
int i;
for (i = 0; i < this.bypassList.Count; i++)
{
System.Text.RegularExpressions.Regex regex = new System.Text.RegularExpressions.Regex((string)this.bypassList[i], System.Text.RegularExpressions.RegexOptions.IgnoreCase | System.Text.RegularExpressions.RegexOptions.Singleline);
if (regex.IsMatch(input))
{
break;
}
}
if (i == this.bypassList.Count)
{
result = false;
}
else
{
while (i < this.bypassList.Count)
{
new System.Text.RegularExpressions.Regex((string)this.bypassList[i]);
i++;
}
result = true;
}
}
catch (ArgumentException)
{
result = false;
}
return(result);
}
public bool IsBypassed(Uri host)
{
#if NET_2_0
if (host == null)
{
throw new ArgumentNullException("host");
}
#endif
if (host.IsLoopback && bypassOnLocal)
{
return(true);
}
if (address == null)
{
return(true);
}
string server = host.Host;
if (bypassOnLocal && server.IndexOf('.') == -1)
{
return(true);
}
// LAMESPEC
if (!bypassOnLocal)
{
if (String.Compare(server, "localhost", true, CultureInfo.InvariantCulture) == 0)
{
return(true);
}
if (String.Compare(server, "loopback", true, CultureInfo.InvariantCulture) == 0)
{
return(true);
}
try {
IPAddress addr = IPAddress.Parse(server);
if (IPAddress.IsLoopback(addr))
{
return(true);
}
} catch {}
}
if (bypassList == null)
{
return(false);
}
try {
string hostStr = host.Scheme + "://" + host.Authority;
int i = 0;
for (; i < bypassList.Count; i++)
{
Regex regex = new Regex((string)bypassList [i],
// TODO: RegexOptions.Compiled | // not implemented yet by Regex
RegexOptions.IgnoreCase |
RegexOptions.Singleline);
if (regex.IsMatch(hostStr))
{
break;
}
}
if (i == bypassList.Count)
{
return(false);
}
// continue checking correctness of regular expressions..
// will throw expression when an invalid one is found
for (; i < bypassList.Count; i++)
{
new Regex((string)bypassList [i]);
}
return(true);
} catch (ArgumentException) {
return(false);
}
}
/// <summary>Indicates whether to use the proxy server for the specified host.</summary>
/// <returns>true if the proxy server should not be used for <paramref name="host" />; otherwise, false.</returns>
/// <param name="host">The <see cref="T:System.Uri" /> instance of the host to check for proxy use. </param>
public bool IsBypassed(Uri host)
{
if (host == null)
{
throw new ArgumentNullException("host");
}
if (host.IsLoopback && bypassOnLocal)
{
return(true);
}
if (address == null)
{
return(true);
}
string host2 = host.Host;
if (bypassOnLocal && host2.IndexOf('.') == -1)
{
return(true);
}
if (!bypassOnLocal)
{
if (string.Compare(host2, "localhost", ignoreCase: true, CultureInfo.InvariantCulture) == 0)
{
return(true);
}
if (string.Compare(host2, "loopback", ignoreCase: true, CultureInfo.InvariantCulture) == 0)
{
return(true);
}
IPAddress addr = null;
if (IPAddress.TryParse(host2, out addr) && IPAddress.IsLoopback(addr))
{
return(true);
}
}
if (bypassList == null || bypassList.Count == 0)
{
return(false);
}
try
{
string input = host.Scheme + "://" + host.Authority;
int i;
for (i = 0; i < bypassList.Count; i++)
{
Regex regex = new Regex((string)bypassList[i], RegexOptions.IgnoreCase | RegexOptions.Singleline);
if (regex.IsMatch(input))
{
break;
}
}
if (i == bypassList.Count)
{
return(false);
}
for (; i < bypassList.Count; i++)
{
new Regex((string)bypassList[i]);
}
return(true);
IL_0189:
bool result;
return(result);
}
catch (ArgumentException)
{
return(false);
IL_0197:
bool result;
return(result);
}
}
/// <devdoc>
/// Determines if the host Uri should be routed locally or go through the proxy.
/// </devdoc>
private bool IsLocal(Uri host)
{
string hostString = host.Host;
// If and only if the host has a colon or is all numbers and dots, it is an IP address.
// If no dot, it is local. (If it has both a dot and a colon, undefined.)
int dot = -1;
bool isIp4 = true;
bool isIp6 = false;
for (int i = 0; i < hostString.Length; i++)
{
if (hostString[i] == '.')
{
if (dot == -1)
{
dot = i;
if (!isIp4)
{
break;
}
}
continue;
}
if (hostString[i] == ':')
{
isIp6 = true;
isIp4 = false;
break;
}
if (hostString[i] < '0' || hostString[i] > '9')
{
isIp4 = false;
if (dot != -1)
{
break;
}
}
}
// No dot? Local.
// The case of all digits is a little weird. Technically it could be a v4 IP, but practically it can only
// be interpreted as an intranet name.
if (dot == -1 && !isIp6)
{
return(true);
}
if (isIp4 || isIp6)
{
// I don't see why this would fail, but in case it does, it's not an IP.
try
{
IPAddress hostAddress = IPAddress.Parse(hostString);
if (IPAddress.IsLoopback(hostAddress))
{
return(true);
}
return(NclUtilities.IsAddressLocal(hostAddress));
}
catch (FormatException) { }
}
// If it matches the primary domain, it's local. (Whether or not the hostname matches.)
string local = "." + IPGlobalProperties.InternalGetIPGlobalProperties().DomainName;
if (local != null && local.Length == (hostString.Length - dot) &&
string.Compare(local, 0, hostString, dot, local.Length, StringComparison.OrdinalIgnoreCase) == 0)
{
return(true);
}
return(false);
}
/// <summary>
/// Determines whether the specified IPAdress is loopback.
/// </summary>
/// <param name="this">The this.</param>
/// <returns>
/// <c>true</c> if the specified IPAdress is loopback; otherwise, <c>false</c>.
/// </returns>
public static bool IsLoopback(this IPAddress @this)
=> IPAddress.IsLoopback(@this) || new[] { IPAddress.Any, IPAddress.IPv6Any, IPAddress.Loopback, IPAddress.IPv6Loopback }.Contains(@this)
;
/*++
*
* SetAddressList - Set the list of IP addresses for this service point.
*
* This is a method called when the underlying code has resolved the
* destination to a list of IP addressess. We actually maintain some
* information about the viable IP addresses for this service point,
* like whether or not they're loopback, etc. So we walk through the
* list and set up an array of structures corresponding to the IP
* addresses.
*
* Note that it's possible to have some IP addresses be loopbacked
* and some not. This can happen if a server name maps to multiple
* physical servers and we're one of those servers.
*
* Input:
* addressList - Array of resolved IP addresses.
*
* Returns: Nothing.
*
* --*/
private IPHostEntryInfo SetAddressList(IPHostEntry ipHostEntry)
{
GlobalLog.Print("SetAddressList(" + ipHostEntry.HostName + ")");
//
// Create an array of IPAddressInfo of the appropriate size, then
// get a list of our local addresses. Walk through the input
// address list. Copy each address in the address list into
// our array, and if the address is a loopback address, mark it as
// such.
//
IPAddress[] addressList = ipHostEntry.AddressList;
IPAddressInfo[] TempInfo = new IPAddressInfo[addressList.Length];
//
// Walk through each member of the input list, copying it into our temp array.
//
int i, k;
IPHostEntry ipLocalHostEntry = null;
try {
ipLocalHostEntry = Dns.LocalHost;
}
catch (Exception exception) {
GlobalLog.Print("ServicePoint#" + ValidationHelper.HashString(this) + "::SetAddressList() Dns.LocalHost threw exception:[" + ValidationHelper.ToString(exception) + "]");
}
for (i = 0; i < addressList.Length; i++)
{
TempInfo[i] = new IPAddressInfo(addressList[i]);
// First, check to see if the current address is a loopback
// address.
if (IPAddress.IsLoopback(TempInfo[i].Address))
{
TempInfo[i].IsLoopback = true;
continue;
}
// See if the current IP address is a local address, and if
// so mark it as such.
if (ipLocalHostEntry != null)
{
for (k = 0; k < ipLocalHostEntry.AddressList.Length; k++)
{
//
// IPv6 Changes: Use .Equals for this check !
//
if (TempInfo[i].Address.Equals(ipLocalHostEntry.AddressList[k]))
{
TempInfo[i].IsLoopback = true;
break;
}
}
}
}
//
// now look for connection group objects that don't have
// an IP address associated with them. When it finds one, it updates
// the IP address and tries to update the connection limit.
//
lock (this) {
// Walk through the connection groups on this service
// point, and update the ones we need to with an IP
// address.
//
IDictionaryEnumerator CGEnumerator;
CGEnumerator = m_ConnectionGroupList.GetEnumerator();
while (CGEnumerator.MoveNext())
{
ConnectionGroup CurrentCG = (ConnectionGroup)CGEnumerator.Value;
// If this connection group doesn't have an IP address
// assigned to it, give it one.
if (CurrentCG.RemoteIPAddress == null)
{
GlobalLog.Print("ServicePoint::UpdateConnectionGroupAddresses null CurrentCG.RemoteIPAddress");
// Update the address.
CurrentCG.RemoteIPAddress = TempInfo[0].Address;
// Now update the connection limit based on what we know.
CurrentCG.InternalConnectionLimit = TempInfo[0].IsLoopback ? LoopbackConnectionLimit : m_ConnectionLimit;
GlobalLog.Print("ServicePoint::UpdateConnectionGroupAddresses CurrentCG.InternalConnectionLimit:" + CurrentCG.InternalConnectionLimit.ToString());
}
GlobalLog.Print("ServicePoint::UpdateConnectionGroupAddresses CurrentCG.RemoteIPAddress:" + CurrentCG.RemoteIPAddress.ToString());
}
}
IPHostEntryInfo ipAddressInfoList = new IPHostEntryInfo(TempInfo, ipHostEntry.HostName);
return(ipAddressInfoList);
}
public static bool IsLocal(this IPAddress ipAddress)
{
var addressList = Dns.GetHostEntry(string.Empty).AddressList;
return(IPAddress.IsLoopback(ipAddress) || addressList.Any(localIp => localIp.Equals(ipAddress)));
}
