//IGMP协议的Info
private string setIgmpInfo(IGMPv2Packet IGMP)
{
string type = IGMP.Type.ToString();
string groupAddress = IGMP.GroupAddress.ToString();
if (type == "MembershipQuery" && IGMP.GroupAddress.ToString() == "0.0.0.0")
return "Membership Query, general";
else if (type == "MembershipQuery")
return "Membership Query, specific for group " + groupAddress;
else if (type == "MembershipReportIGMPv2")
return "Membership Report group " + groupAddress;
else if (type == "LeaveGroup")
return "Leave Group " + groupAddress;
else
return "Unknown state";
}
public static String IGMPv2Analyzor(ref TreeView tree, IGMPv2Packet igmpv2)
{
string info = "\r\n--------- IGMPv2 Header --------\r\n";
TreeNode IGMP2Node = new TreeNode("IGMP(Internet Group Management Protocol)v2 Header");
string type, maxrt, chk, gaddr, ecp;
try
{
IGMP2Node.Nodes.Add(type = "Type = " + igmpv2.Type.ToString());
IGMP2Node.Nodes.Add(maxrt = "MaxResponseTime = " + igmpv2.MaxResponseTime.ToString());
IGMP2Node.Nodes.Add(chk = "Checksum = " + igmpv2.Checksum.ToString());
IGMP2Node.Nodes.Add(gaddr = "GroupAddress = " + igmpv2.GroupAddress.ToString());
info += type + "\r\n" + maxrt + "\r\n" + chk + "\r\n" + gaddr + "\r\n";
}
catch (Exception)
{
IGMP2Node.Nodes.Add(ecp = "IGMP segment or incomplete header");
info += ecp + "\r\n";
}
tree.Nodes.Add(IGMP2Node);
return info;
}