Add support and docs for Windows

.goreleaser.yaml

@@ -13,6 +13,7 @@ builds:
     goos:
       - linux
       - darwin
+      - windows
     goarch:
       - amd64
       - arm

README.md

@@ -14,22 +14,27 @@ curl ipinfo.io
 
 ## Requirements
 
-- [openvpn](https://github.com/OpenVPN/openvpn)
-- macOS or Linux
+- OpenVPN <= 2.5 (configurations on vpngate.net do not seem work on OpenVPN 2.6+)
+- macOS, Linux, or Windows
 
 ## Install
 
-The simplest method of installation is using homebrew. You can also build from source.
+You can install vpngate in a few different ways, and differs slightly depending on your OS.
 
-### from homebrew
+### Homebrew
 
 vpngate can be installed with [homebrew](https://brew.sh/) (ensure that xcode is installed before installing homebrew by running `xcode-select --install`).
 
 ```shell
-
 brew install openvpn davegallant/public/vpngate
 ```
 
+## Windows
+
+On Windows, install OpenVPN 2.5.x from the [official website](https://openvpn.net/community-downloads/).
+
+You must run in the terminal (command prompt) as Administrator in order to be able to run the relevant OpenVPN commands.
+
 ### from source
 
 Ensure that [go](https://golang.org/doc/install) is installed.

pkg/vpn/client.go

@@ -2,6 +2,7 @@ package vpn
 
 import (
 	"os"
+	"runtime"
 
 	"github.com/davegallant/vpngate/pkg/exec"
 	"github.com/juju/errors"
@@ -28,6 +29,10 @@ func Connect(configPath string) error {
 		}
 	}()
 
-	_, err = exec.Run("openvpn", ".", "--verb", "4", "--log", tmpLogFile.Name(), "--config", configPath)
+	executable := "openvpn"
+	if runtime.GOOS == "windows" {
+		executable = "C:\\Program Files\\OpenVPN\\bin\\openvpn.exe"
+	}
+	_, err = exec.Run(executable, ".", "--verb", "4", "--log", tmpLogFile.Name(), "--config", configPath)
 	return err
 }