2 // System.Net.Sockets.MulticastOption.cs
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34 namespace System.Net.Sockets
37 // Encapsulates a multicast option
39 public class MulticastOption
41 // Don't change the names of these fields without also
42 // changing socket-io.c in the runtime
43 private IPAddress group;
44 private IPAddress local;
47 public MulticastOption (IPAddress group)
48 : this (group, IPAddress.Any)
52 public MulticastOption (IPAddress group, int interfaceIndex)
55 throw new ArgumentNullException ("group");
56 if (interfaceIndex < 0 || interfaceIndex > 0xffffff)
57 throw new ArgumentOutOfRangeException ("interfaceIndex");
60 this.iface_index = interfaceIndex;
63 public MulticastOption (IPAddress group, IPAddress mcint)
66 throw new ArgumentNullException ("group");
68 throw new ArgumentNullException ("mcint");
74 public IPAddress Group {
76 set { group = value; }
79 public IPAddress LocalAddress {
87 public int InterfaceIndex {
88 get { return iface_index; }
90 if (value < 0 || value > 0xffffff)
91 throw new ArgumentOutOfRangeException ("value");