How many sockets are currently been used on windows 10-CodePudding

I'm trying to find out how many sockets are currently being used on my machine. If it's possible, I need an API that returns the exact number of sockets being used at any time.

I have tried TCPView, and the command netstat for many version, but all I get is a list of connections.

CodePudding user response：

If you are just interested in the number of TCP/UDP sockets in use, have a look at the following APIs:

GetTcpStatistics(), GetTcpStatisticsEx(), GetTcpStatisticsEx2()

GetUdpStatistics(), GetUdpStatisticsEx(), GetUdpStatisticsEx2()

But those don't really tell you anything useful, and the stats are global, not per-interface. There are other APIs that can enumerate the available sockets and retrieve actual details about them (statuses, port numbers, etc), which you can use to fine-tune your searching as needed (eg, ESTABLISHED on IP x Port y):

GetTcpTable(), GetTcpTable2(), GetExtendedTcpTable()

GetUdpTable(), GetUdp6Table(), GetExtendedUdpTable()

CodePudding user response：

Just the amount?

netstat -a -n | find /i "127.0.0.1" | find /I "ESTABLISHED" > t.txt && powershell -command "& Get-Content "t.txt" | Measure-Object -Line"

Replace 127.0.0.1 if needed. On my box it resulted in

Lines Words Characters Property
----- ----- ---------- --------
   24

Looking at t.txt, it will will show something like:

  TCP    127.0.0.1:49672        127.0.0.1:49673        ESTABLISHED
  TCP    127.0.0.1:49673        127.0.0.1:49672        ESTABLISHED
  TCP    127.0.0.1:49674        127.0.0.1:49675        ESTABLISHED
  TCP    127.0.0.1:49675        127.0.0.1:49674        ESTABLISHED
  TCP    127.0.0.1:57354        127.0.0.1:57355        ESTABLISHED
  TCP    127.0.0.1:57355        127.0.0.1:57354        ESTABLISHED
  TCP    127.0.0.1:57356        127.0.0.1:57357        ESTABLISHED
  TCP    127.0.0.1:57357        127.0.0.1:57356        ESTABLISHED