Esempio n. 1
0
        /// <summary>
        /// 获取一次Tcp端口快照信息
        /// </summary>
        /// <returns></returns>
        public unsafe static List <TcpPort> Snapshot()
        {
            var portList = new List <TcpPort>();

            const int AF_INET = 2;
            const int TCP_TABLE_OWNER_PID_ALL = 5;

            var size = 0;

            TcpTable.GetExtendedTcpTable(null, &size, true, AF_INET, TCP_TABLE_OWNER_PID_ALL, 0);
            byte *pTable = stackalloc byte[size];

            if (TcpTable.GetExtendedTcpTable(pTable, &size, true, AF_INET, TCP_TABLE_OWNER_PID_ALL, 0) == 0)
            {
                var rowLength = *(int *)(pTable);
                var pRow      = pTable + Marshal.SizeOf(rowLength);

                for (int i = 0; i < rowLength; i++)
                {
                    var row     = *(MIB_TCPROW_OWNER_PID *)pRow;
                    var tcpPort = TcpPort.FromTcpRow(row);

                    if (portList.Contains(tcpPort) == false)
                    {
                        portList.Add(tcpPort);
                    }

                    pRow = pRow + Marshal.SizeOf(typeof(MIB_TCPROW_OWNER_PID));
                }
            }

            return(portList);
        }