tailscale/net/netstat/netstat.go
Brad Fitzpatrick f65eb4e5c1 net/netstat: start of new netstat package, with Windows for now
This will be used in a future change to do localhost connection
authentication. This lets us quickly map a localhost TCP connection to
a PID. (A future change will then map a pid to a user)

TODO: pull portlist's netstat code into this package. Then portlist
will be fast on Windows without requiring shelling out to netstat.exe.
2020-09-10 15:24:49 -07:00

37 lines
841 B
Go

// Copyright (c) 2020 Tailscale Inc & AUTHORS All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
// Package netstat returns the local machine's network connection table.
package netstat
import (
"errors"
"runtime"
"inet.af/netaddr"
)
var ErrNotImplemented = errors.New("not implemented for GOOS=" + runtime.GOOS)
type Entry struct {
Local, Remote netaddr.IPPort
Pid int
State string // TODO: type?
}
// Table contains local machine's TCP connection entries.
//
// Currently only TCP (IPv4 and IPv6) are included.
type Table struct {
Entries []Entry
}
// Get returns the connection table.
//
// It returns ErrNotImplemented if the table is not available for the
// current operating system.
func Get() (*Table, error) {
return get()
}