How to find out through Python which ports are occupied by applications in Windows?

D

Dima_E2020-08-04 00:03:56

Python

Dima_E, 2020-08-04 00:03:56

What library can provide such functionality? (Which ports applications use)
Needed to collect information for the subsequent separation of traffic through the router.

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Hemul GM, 2020-08-04
@Dima_E

On Windows? If yes, then use WinAPI to access this information.
Dig in this direction. Namespaces: Windows, Winsock, Winsock2.

GetTcpTable: function(pTcpTable: PMIB_TCPTABLE; var pdwSize: DWORD; bOrder: BOOL): DWORD; stdcall; 
{$EXTERNALSYM GetTcpTable}
GetUdpTable: function(pUdpTable: PMIB_UDPTABLE; var pdwSize: DWORD; bOrder: BOOL): DWORD; stdcall;
{$EXTERNALSYM GetUdpTable}


GetExtendedTcpTable: function(pTcpTable: PMIB_TCPEXTABLE; var pdwSize: DWORD; bOrder: BOOL; ulAf: ULONG; TableClass: TCP_TABLE_CLASS; Reserved: ULONG): DWORD; stdcall;
{$EXTERNALSYM GetExtendedTcpTable}
GetExtendedUdpTable: function(pTcpTable: PMIB_UDPEXTABLE; var pdwSize: DWORD; bOrder: BOOL; ulAf: ULONG; TableClass: UDP_TABLE_CLASS; Reserved: ULONG): DWORD; stdcall;
{$EXTERNALSYM GetExtendedUdpTable}

These WinApi methods allow you to get information about open ports and the processes for which they are open
. This is how it looks: