How to get a process tcp port number

[Werner Schmidt]

Dear group,

I have the following scenario:

I have an application - let's call it myApp.exe - that is listening on a
specific port - let's say 10000.

Now I need a way to get the port number of myApp.exe (perhaps with WMI,
API, etc.).

Is there a way to handle this?
I can see the port myApp.exe is listening through a tool called tcpview.

Hope you can help me.

Best regards,

Werner

[Willy Denoyette [MVP]]

"Werner Schmidt" <in*******@MADD.gmx.dewrote in message
news:OX**************@TK2MSFTNGP03.phx.gbl...

Dear group,

I have the following scenario:

I have an application - let's call it myApp.exe - that is listening on a specific port -
let's say 10000.

Now I need a way to get the port number of myApp.exe (perhaps with WMI, API, etc.).

Is there a way to handle this?
I can see the port myApp.exe is listening through a tool called tcpview.

Hope you can help me.

Best regards,

Werner

From the command line: netstat -o returns the listeners IP address and port and PID,
netstat -b returns the process name instead of the PID.

Willy.

[garyusenet]

How do you do this programatically? (determine port that is not launch
netstat).

Willy Denoyette [MVP] wrote:

"Werner Schmidt" <in*******@MADD.gmx.dewrote in message
news:OX**************@TK2MSFTNGP03.phx.gbl...

Dear group,

I have the following scenario:

I have an application - let's call it myApp.exe - that is listening on a specific port -
let's say 10000.

Now I need a way to get the port number of myApp.exe (perhaps with WMI, API, etc.).

Is there a way to handle this?
I can see the port myApp.exe is listening through a tool called tcpview.

Hope you can help me.

Best regards,

Werner

From the command line: netstat -o returns the listeners IP address and port and PID,
netstat -b returns the process name instead of the PID.

Willy.

[Willy Denoyette [MVP]]

<ga********@myway.comwrote in message
news:11**********************@j72g2000cwa.googlegr oups.com...

How do you do this programatically? (determine port that is not launch
netstat).

By calling into iphlpapi.dll using PInvoke interop.
Google around for GetExtendedTcpTable and iphlpapi.dll, I'm sure you will find some existing
stuff.

Willy.

[Werner Schmidt]

Thank you very much, Willy. I will give it a try.

Best regards,

Werner

Willy Denoyette [MVP] schrieb:

<ga********@myway.comwrote in message
news:11**********************@j72g2000cwa.googlegr oups.com...

>How do you do this programatically? (determine port that is not launch
netstat).

By calling into iphlpapi.dll using PInvoke interop.
Google around for GetExtendedTcpTable and iphlpapi.dll, I'm sure you
will find some existing stuff.

Willy.

[Werner Schmidt]

Here are some API-Methods for my purposes:

GetTcpTable()

AllocateAndGetTcpExTableFromStack()

GetExtendedTcpTable()
I wrote a small programm that is able to show me all Processes with the
belonging TCP-Ports (with AllocateAndGetTcpExTableFromStack()) running
under Windows XP.

Now my problem is, that under Windows 2000 I can't use
AllocateAndGetTcpExTableFromStack() or GetExtendedTcpTable() so I'm only
able to use GetTcpTable() to list all TCP-Ports but without the
belonging processes.

Did somebody have the same problem or is there another way (.Net or WMI
etc.) to solve my problem?

Thanks in advance,

Werner

Werner Schmidt schrieb:

Thank you very much, Willy. I will give it a try.

Best regards,

Werner

Willy Denoyette [MVP] schrieb:

><ga********@myway.comwrote in message
news:11**********************@j72g2000cwa.googleg roups.com...

>>How do you do this programatically? (determine port that is not launch
netstat).

By calling into iphlpapi.dll using PInvoke interop.
Google around for GetExtendedTcpTable and iphlpapi.dll, I'm sure you
will find some existing stuff.

Willy.