//
// (C) Mads Pultz, 2001
+//
+// Permission is hereby granted, free of charge, to any person obtaining
+// a copy of this software and associated documentation files (the
+// "Software"), to deal in the Software without restriction, including
+// without limitation the rights to use, copy, modify, merge, publish,
+// distribute, sublicense, and/or sell copies of the Software, and to
+// permit persons to whom the Software is furnished to do so, subject to
+// the following conditions:
+//
+// The above copyright notice and this permission notice shall be
+// included in all copies or substantial portions of the Software.
+//
+// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+// EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+// NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
+// LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
+// OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
+// WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+//
+
using System;
using System.Net.Sockets;
using System.Text;
using System.Runtime.Remoting.Messaging;
namespace System.Net {
- public sealed class Dns {
+#if NET_2_0
+ public static class Dns {
+#else
+ public sealed class Dns {
private Dns () {}
+#endif
+
+ static Dns ()
+ {
+ System.Net.Sockets.Socket.CheckProtocolSupport();
+ }
+
+#if !MOONLIGHT // global remove of async methods
+
+ private delegate IPHostEntry GetHostByNameCallback (string hostName);
+ private delegate IPHostEntry ResolveCallback (string hostName);
+#if NET_2_0
+ private delegate IPHostEntry GetHostEntryNameCallback (string hostName);
+ private delegate IPHostEntry GetHostEntryIPCallback (IPAddress hostAddress);
+ private delegate IPAddress [] GetHostAddressesCallback (string hostName);
+#endif
+
+#if NET_2_0
+ [Obsolete ("Use BeginGetHostEntry instead")]
+#endif
+ public static IAsyncResult BeginGetHostByName (string hostName,
+ AsyncCallback requestCallback, object stateObject)
+ {
+ if (hostName == null)
+ throw new ArgumentNullException ("hostName");
- private delegate IPHostEntry GetHostByNameCallback (string hostName);
- private delegate IPHostEntry ResolveCallback (string hostName);
-
- public static IAsyncResult BeginGetHostByName (string hostName,
- AsyncCallback requestCallback, object stateObject)
- {
- if (hostName == null)
- throw new ArgumentNullException();
GetHostByNameCallback c = new GetHostByNameCallback (GetHostByName);
return c.BeginInvoke (hostName, requestCallback, stateObject);
- }
+ }
+
+#if NET_2_0
+ [Obsolete ("Use BeginGetHostEntry instead")]
+#endif
+ public static IAsyncResult BeginResolve (string hostName,
+ AsyncCallback requestCallback, object stateObject)
+ {
+ if (hostName == null)
+ throw new ArgumentNullException ("hostName");
- public static IAsyncResult BeginResolve (string hostName,
- AsyncCallback requestCallback, object stateObject)
- {
- if (hostName == null)
- throw new ArgumentNullException();
ResolveCallback c = new ResolveCallback (Resolve);
return c.BeginInvoke (hostName, requestCallback, stateObject);
- }
-
- public static IPHostEntry EndGetHostByName (IAsyncResult asyncResult) {
+ }
+
+#if NET_2_0
+ public static IAsyncResult BeginGetHostAddresses (string hostNameOrAddress,
+ AsyncCallback requestCallback, object stateObject)
+ {
+ if (hostNameOrAddress == null)
+ throw new ArgumentNullException ("hostName");
+ if (hostNameOrAddress == "0.0.0.0" || hostNameOrAddress == "::0")
+ throw new ArgumentException ("Addresses 0.0.0.0 (IPv4) " +
+ "and ::0 (IPv6) are unspecified addresses. You " +
+ "cannot use them as target address.",
+ "hostNameOrAddress");
+
+ GetHostAddressesCallback c = new GetHostAddressesCallback (GetHostAddresses);
+ return c.BeginInvoke (hostNameOrAddress, requestCallback, stateObject);
+ }
+
+ public static IAsyncResult BeginGetHostEntry (string hostNameOrAddress,
+ AsyncCallback requestCallback, object stateObject)
+ {
+ if (hostNameOrAddress == null)
+ throw new ArgumentNullException ("hostName");
+ if (hostNameOrAddress == "0.0.0.0" || hostNameOrAddress == "::0")
+ throw new ArgumentException ("Addresses 0.0.0.0 (IPv4) " +
+ "and ::0 (IPv6) are unspecified addresses. You " +
+ "cannot use them as target address.",
+ "hostNameOrAddress");
+
+ GetHostEntryNameCallback c = new GetHostEntryNameCallback (GetHostEntry);
+ return c.BeginInvoke (hostNameOrAddress, requestCallback, stateObject);
+ }
+
+ public static IAsyncResult BeginGetHostEntry (IPAddress address,
+ AsyncCallback requestCallback, object stateObject)
+ {
+ if (address == null)
+ throw new ArgumentNullException ("address");
+
+ GetHostEntryIPCallback c = new GetHostEntryIPCallback (GetHostEntry);
+ return c.BeginInvoke (address, requestCallback, stateObject);
+ }
+#endif
+
+#if NET_2_0
+ [Obsolete ("Use EndGetHostEntry instead")]
+#endif
+ public static IPHostEntry EndGetHostByName (IAsyncResult asyncResult)
+ {
if (asyncResult == null)
throw new ArgumentNullException ("asyncResult");
+
AsyncResult async = (AsyncResult) asyncResult;
GetHostByNameCallback cb = (GetHostByNameCallback) async.AsyncDelegate;
- asyncResult.AsyncWaitHandle.WaitOne ();
return cb.EndInvoke(asyncResult);
- }
+ }
- public static IPHostEntry EndResolve (IAsyncResult asyncResult) {
+#if NET_2_0
+ [Obsolete ("Use EndGetHostEntry instead")]
+#endif
+ public static IPHostEntry EndResolve (IAsyncResult asyncResult)
+ {
if (asyncResult == null)
throw new ArgumentNullException ("asyncResult");
AsyncResult async = (AsyncResult) asyncResult;
ResolveCallback cb = (ResolveCallback) async.AsyncDelegate;
- asyncResult.AsyncWaitHandle.WaitOne ();
return cb.EndInvoke(asyncResult);
- }
-
- [MethodImplAttribute(MethodImplOptions.InternalCall)]
- private extern static bool GetHostByName_internal(string host, out string h_name, out string[] h_aliases, out string[] h_addr_list);
-
- [MethodImplAttribute(MethodImplOptions.InternalCall)]
- private extern static bool GetHostByAddr_internal(string addr, out string h_name, out string[] h_aliases, out string[] h_addr_list);
-
- [MethodImplAttribute(MethodImplOptions.InternalCall)]
- private extern static bool GetHostName_internal(out string h_name);
+ }
+
+#if NET_2_0
+
+ public static IPAddress [] EndGetHostAddresses (IAsyncResult asyncResult)
+ {
+ if (asyncResult == null)
+ throw new ArgumentNullException ("asyncResult");
+
+ AsyncResult async = (AsyncResult) asyncResult;
+ GetHostAddressesCallback cb = (GetHostAddressesCallback) async.AsyncDelegate;
+ return cb.EndInvoke(asyncResult);
+ }
+
+ public static IPHostEntry EndGetHostEntry (IAsyncResult asyncResult)
+ {
+ if (asyncResult == null)
+ throw new ArgumentNullException ("asyncResult");
+ AsyncResult async = (AsyncResult) asyncResult;
+#if NET_2_0
+ if (async.AsyncDelegate is GetHostEntryIPCallback)
+ return ((GetHostEntryIPCallback) async.AsyncDelegate).EndInvoke (asyncResult);
+#endif
+ GetHostEntryNameCallback cb = (GetHostEntryNameCallback) async.AsyncDelegate;
+ return cb.EndInvoke(asyncResult);
+ }
+#endif
- private static IPHostEntry hostent_to_IPHostEntry(string h_name, string[] h_aliases, string[] h_addrlist) {
- IPHostEntry he = new IPHostEntry();
- IPAddress[] addrlist = new IPAddress[h_addrlist.Length];
-
- he.HostName=h_name;
- he.Aliases=h_aliases;
- for(int i=0; i<h_addrlist.Length; i++) {
- addrlist[i]=IPAddress.Parse(h_addrlist[i]);
- }
- he.AddressList=addrlist;
-
- return(he);
- }
-
- public static IPHostEntry GetHostByAddress(IPAddress address) {
- if (address == null)
- throw new ArgumentNullException();
- return GetHostByAddress(address.ToString());
- }
-
- public static IPHostEntry GetHostByAddress(string address) {
- if (address == null) {
- throw new ArgumentNullException();
- }
-
- string h_name;
- string[] h_aliases, h_addrlist;
-
- bool ret = GetHostByAddr_internal(address, out h_name,
- out h_aliases,
- out h_addrlist);
- if (ret == false) {
- throw new SocketException(11001);
- }
-
- return(hostent_to_IPHostEntry(h_name, h_aliases,
- h_addrlist));
- }
-
- public static IPHostEntry GetHostByName(string hostName) {
- if (hostName == null)
- throw new ArgumentNullException();
-
- string h_name;
- string[] h_aliases, h_addrlist;
-
- bool ret = GetHostByName_internal(hostName, out h_name,
- out h_aliases,
- out h_addrlist);
- if (ret == false)
- throw new SocketException(11001);
-
- return(hostent_to_IPHostEntry(h_name, h_aliases,
- h_addrlist));
- }
-
- /// <summary>
- /// This method returns the host name associated with the local host.
- /// </summary>
- public static string GetHostName() {
- string hostName;
-
- bool ret = GetHostName_internal(out hostName);
-
+#endif // !MOONLIGHT: global remove of async methods
+
+#if !TARGET_JVM
+ [MethodImplAttribute(MethodImplOptions.InternalCall)]
+ private extern static bool GetHostByName_internal(string host, out string h_name, out string[] h_aliases, out string[] h_addr_list);
+
+ [MethodImplAttribute(MethodImplOptions.InternalCall)]
+ private extern static bool GetHostByAddr_internal(string addr, out string h_name, out string[] h_aliases, out string[] h_addr_list);
+
+ [MethodImplAttribute(MethodImplOptions.InternalCall)]
+ private extern static bool GetHostName_internal(out string h_name);
+#endif
+
+ private static IPHostEntry hostent_to_IPHostEntry(string h_name, string[] h_aliases, string[] h_addrlist)
+ {
+ IPHostEntry he = new IPHostEntry();
+ ArrayList addrlist = new ArrayList();
+
+ he.HostName = h_name;
+ he.Aliases = h_aliases;
+ for(int i=0; i<h_addrlist.Length; i++) {
+ try {
+ IPAddress newAddress = IPAddress.Parse(h_addrlist[i]);
+
+ if( (Socket.SupportsIPv6 && newAddress.AddressFamily == AddressFamily.InterNetworkV6) ||
+ (Socket.SupportsIPv4 && newAddress.AddressFamily == AddressFamily.InterNetwork) )
+ addrlist.Add(newAddress);
+ } catch (ArgumentNullException) {
+ /* Ignore this, as the
+ * internal call might have
+ * left some blank entries at
+ * the end of the array
+ */
+ }
+ }
+
+ if(addrlist.Count == 0)
+ throw new SocketException(11001);
+
+ he.AddressList = addrlist.ToArray(typeof(IPAddress)) as IPAddress[];
+ return he;
+ }
+
+#if NET_2_0
+ [Obsolete ("Use GetHostEntry instead")]
+#endif
+ public static IPHostEntry GetHostByAddress(IPAddress address)
+ {
+ if (address == null)
+ throw new ArgumentNullException ("address");
+
+ return GetHostByAddressFromString (address.ToString (), false);
+ }
+
+#if NET_2_0
+ [Obsolete ("Use GetHostEntry instead")]
+#endif
+ public static IPHostEntry GetHostByAddress(string address)
+ {
+ if (address == null)
+ throw new ArgumentNullException ("address");
+
+ return GetHostByAddressFromString (address, true);
+ }
+
+ static IPHostEntry GetHostByAddressFromString (string address, bool parse)
+ {
+ // Undocumented MS behavior: when called with IF_ANY,
+ // this should return the local host
+ if (address.Equals ("0.0.0.0")) {
+ address = "127.0.0.1";
+ parse = false;
+ }
+
+ // Must check the IP format, might send an exception if invalid string.
+ if (parse)
+ IPAddress.Parse (address);
+
+ string h_name;
+ string[] h_aliases, h_addrlist;
+#if TARGET_JVM
+ h_name = null;
+ h_aliases = null;
+ h_addrlist = null;
+ try {
+ java.net.InetAddress[] iaArr =
+ java.net.InetAddress.getAllByName(address);
+ if (iaArr != null && iaArr.Length > 0)
+ h_name = iaArr[0].getHostName();
+ if (iaArr != null && iaArr.Length > 0)
+ {
+ h_addrlist = new String[iaArr.Length];
+ for (int i = 0; i < h_addrlist.Length; i++)
+ h_addrlist[i] = iaArr[i].getHostAddress();
+ }
+ } catch (java.net.UnknownHostException jUHE) {
+ throw new SocketException((int)SocketError.HostNotFound, jUHE.Message);
+ }
+#else
+ bool ret = GetHostByAddr_internal(address, out h_name, out h_aliases, out h_addrlist);
+ if (!ret)
+ throw new SocketException(11001);
+#endif
+ return (hostent_to_IPHostEntry (h_name, h_aliases, h_addrlist));
+
+ }
+
+#if NET_2_0
+ public
+#else
+ internal
+#endif
+ static IPHostEntry GetHostEntry (string hostNameOrAddress)
+ {
+ if (hostNameOrAddress == null)
+ throw new ArgumentNullException ("hostNameOrAddress");
+ if (hostNameOrAddress == "0.0.0.0" || hostNameOrAddress == "::0")
+ throw new ArgumentException ("Addresses 0.0.0.0 (IPv4) " +
+ "and ::0 (IPv6) are unspecified addresses. You " +
+ "cannot use them as target address.",
+ "hostNameOrAddress");
+
+ IPAddress addr;
+ if (hostNameOrAddress.Length > 0 && IPAddress.TryParse (hostNameOrAddress, out addr))
+ return GetHostEntry (addr);
+
+ return GetHostByName (hostNameOrAddress);
+ }
+
+#if NET_2_0
+ public
+#else
+ internal
+#endif
+ static IPHostEntry GetHostEntry (IPAddress address)
+ {
+ if (address == null)
+ throw new ArgumentNullException ("address");
+
+ return GetHostByAddressFromString (address.ToString (), false);
+ }
+
+#if NET_2_0
+ public
+#else
+ internal
+#endif
+ static IPAddress [] GetHostAddresses (string hostNameOrAddress)
+ {
+ if (hostNameOrAddress == null)
+ throw new ArgumentNullException ("hostNameOrAddress");
+
+ if (hostNameOrAddress == "0.0.0.0" || hostNameOrAddress == "::0")
+ throw new ArgumentException ("Addresses 0.0.0.0 (IPv4) " +
+ "and ::0 (IPv6) are unspecified addresses. You " +
+ "cannot use them as target address.",
+ "hostNameOrAddress");
+
+ IPAddress addr;
+ if (hostNameOrAddress.Length > 0 && IPAddress.TryParse (hostNameOrAddress, out addr))
+ return new IPAddress[1] { addr };
+
+ return GetHostEntry (hostNameOrAddress).AddressList;
+ }
+
+#if NET_2_0
+ [Obsolete ("Use GetHostEntry instead")]
+#endif
+ public static IPHostEntry GetHostByName (string hostName)
+ {
+ if (hostName == null)
+ throw new ArgumentNullException ("hostName");
+#if TARGET_JVM
+ if (hostName.Length == 0)
+ hostName = "localhost";
+ try {
+ java.net.InetAddress[] iaArr = java.net.InetAddress.getAllByName(hostName);
+ IPHostEntry host = new IPHostEntry();
+ if (iaArr != null && iaArr.Length > 0)
+ {
+ host.HostName = iaArr[0].getHostName();
+ IPAddress[] ipArr = new IPAddress[iaArr.Length];
+ for (int i = 0; i < iaArr.Length; i++)
+ ipArr[i] = IPAddress.Parse(iaArr[i].getHostAddress());
+
+ host.AddressList = ipArr;
+ }
+ return host;
+ } catch (java.net.UnknownHostException jUHE) {
+ throw new SocketException((int)SocketError.HostNotFound, jUHE.Message);
+ }
+#else
+ string h_name;
+ string[] h_aliases, h_addrlist;
+
+ bool ret = GetHostByName_internal(hostName, out h_name, out h_aliases, out h_addrlist);
+ if (ret == false)
+ throw new SocketException(11001);
+
+ return(hostent_to_IPHostEntry(h_name, h_aliases, h_addrlist));
+#endif
+ }
+
+ public static string GetHostName ()
+ {
+#if TARGET_JVM
+ return java.net.InetAddress.getLocalHost ().getHostName ();
+#else
+ string hostName;
+
+ bool ret = GetHostName_internal(out hostName);
+
if (ret == false)
- throw new SocketException(11001);
-
- return hostName;
- }
-
- /// <summary>
- /// This method resolves a DNS-style host name or IP
- /// address.
- /// </summary>
- /// <param name=hostName>
- /// A string containing either a DNS-style host name (e.g.
- /// www.go-mono.com) or IP address (e.g. 129.250.184.233).
- /// </param>
- public static IPHostEntry Resolve(string hostName) {
- if (hostName == null)
- throw new ArgumentNullException();
-
- return GetHostByName (hostName);
- }
- }
+ throw new SocketException(11001);
+
+ return hostName;
+#endif
+ }
+
+#if NET_2_0
+ [Obsolete ("Use GetHostEntry instead")]
+#endif
+ public static IPHostEntry Resolve(string hostName)
+ {
+ if (hostName == null)
+ throw new ArgumentNullException ("hostName");
+
+ IPHostEntry ret = null;
+
+ try {
+ ret = GetHostByAddress(hostName);
+ }
+ catch{}
+
+ if(ret == null)
+ ret = GetHostByName(hostName);
+
+ return ret;
+ }
+ }
}
projects / mono.git / blobdiff