public static void disconnect8300()
{
List <TcpProcessRecord> tcpClientList = GetAllTcpConnections();
foreach (TcpProcessRecord tcpRecord in tcpClientList)
{
if (tcpRecord.RemotePort == 8300)
{
MIB_TCPROW connToDelete = new MIB_TCPROW();
connToDelete.state = MibTcpState.DELETE_TCB;
connToDelete.localAddr = (int)tcpRecord.LocalAddress.Address;
connToDelete.localPort = htons(tcpRecord.LocalPort);
connToDelete.remoteAddr = (int)tcpRecord.RemoteAddress.Address;
connToDelete.remotePort = htons(tcpRecord.RemotePort);
IntPtr tcprowPtr = GetPtrFromTCPROW(connToDelete);
int ret = SetTcpEntry(tcprowPtr);
ReleasePtrForTCPROW(tcprowPtr);
if (ret != 0)
{
uint dwFlags = FORMAT_MESSAGE_FROM_SYSTEM | FORMAT_MESSAGE_IGNORE_INSERTS;
StringBuilder lpBuffer = new StringBuilder(260); //声明StringBuilder的初始大小
int count = FormatMessage(dwFlags, IntPtr.Zero, 1439, 0, lpBuffer, 260, IntPtr.Zero);
Console.WriteLine("disconnect fail, ret = " + ret + " info:" + lpBuffer.ToString());
}
//Console.WriteLine(String.Format("localaddr:{0},localport:{1},remoteaddr:{2},remoteport:{3}",
// connToDelete.localAddr, connToDelete.localPort, connToDelete.remoteAddr, connToDelete.remotePort));
break;
}
}
}
private static IntPtr GetPtrFromTCPROW(MIB_TCPROW obj)
{
IntPtr ptr = Marshal.AllocCoTaskMem(Marshal.SizeOf(obj));
Marshal.StructureToPtr(obj, ptr, false);
return(ptr);
}
//The function that fills the MIB_TCPROW array with connectioninfos
private static MIB_TCPROW[] getTcpTable()
{
IntPtr buffer = IntPtr.Zero; bool allocated = false;
try
{
int iBytes = 0;
GetTcpTable(IntPtr.Zero, ref iBytes, false); //Getting size of return data
buffer = Marshal.AllocCoTaskMem(iBytes); //allocating the datasize
allocated = true;
GetTcpTable(buffer, ref iBytes, false); //Run it again to fill the memory with the data
int structCount = Marshal.ReadInt32(buffer); // Get the number of structures
IntPtr buffSubPointer = buffer; //Making a pointer that will point into the buffer
buffSubPointer = (IntPtr)((int)buffer + 4); //Move to the first data (ignoring dwNumEntries from the original MIB_TCPTABLE struct)
MIB_TCPROW[] tcpRows = new MIB_TCPROW[structCount]; //Declaring the array
//Get the struct size
MIB_TCPROW tmp = new MIB_TCPROW();
int sizeOfTCPROW = Marshal.SizeOf(tmp);
//Fill the array 1 by 1
for (int i = 0; i < structCount; i++)
{
tcpRows[i] = (MIB_TCPROW)Marshal.PtrToStructure(buffSubPointer, typeof(MIB_TCPROW)); //copy struct data
buffSubPointer = (IntPtr)((int)buffSubPointer + sizeOfTCPROW); //move to next structdata
}
return(tcpRows);
}
catch (Exception ex)
{
throw new Exception("getTcpTable failed! [" + ex.GetType().ToString() + "," + ex.Message + "]");
}
finally
{
if (allocated)
{
Marshal.FreeCoTaskMem(buffer); //Free the allocated memory
}
}
}
public static void CloseRemotePort(int port)
{
MIB_TCPROW[] rows = getTcpTable();
for (int i = 0; i < rows.Length; i++)
{
if (port == ntohs(rows[i].remotePort))
{
MIB_TCPROW tcpRecord = rows[i];
tcpRecord.state = MibTcpState.DELETE_TCB;
IntPtr ptr = GetPtrFromTCPROW(tcpRecord);
//Console.WriteLine(String.Format("localaddr:{0},localport:{1},remoteaddr:{2},remoteport:{3}",
// tcpRecord.localAddr, tcpRecord.localPort, tcpRecord.remoteAddr, tcpRecord.remotePort));
int ret = SetTcpEntry(ptr);
ReleasePtrForTCPROW(ptr);
if (ret != 0)
{
uint dwFlags = FORMAT_MESSAGE_FROM_SYSTEM | FORMAT_MESSAGE_IGNORE_INSERTS;
StringBuilder lpBuffer = new StringBuilder(260); //声明StringBuilder的初始大小
int count = FormatMessage(dwFlags, IntPtr.Zero, 1439, 0, lpBuffer, 260, IntPtr.Zero);
Console.WriteLine("disconnect fail, ret = " + ret + " info:" + lpBuffer.ToString());
}
}
}
}