fix(conf): add Windows support for Unix Domain Socket

[yin1999]

Summary

add Windows support for Unix Domain Socket.

Supports

Windows Insider Build 17063 and later does support Unix Domain Socket, but the UDS check logic has blocked using UDS in windows.

Tests

config (yaml format):

log:
  loglevel: warning

inbounds:
  - listen: "C:\\Absolute-path\\to\\xray.sock"
    tag: xray
    protocol: http
    sniffing:
      enabled: true
      destOverride: ["http", "tls"]
    settings:
      auth: noauth
      allowTransparent: false

outbounds:
  - tag: freedom
    protocol: freedom

routing:
  domainStrategy: AsIs
  # all pass
  rules:
    - type: field
      inboundTag: xray
      outboundTag: freedom

Run curl (with PowerShell Core) to test the http proxy server:

curl -I --unix-socket 'C:\Absolute-path\to\xray.sock' -X connect http:/ --next https://www.baidu.com/

[Fangliding]

@yin1999 It would be better add add a support check and return an error log if current version is not supported

[yin1999]

@yin1999 It would be better add add a support check and return an error log if current version is not supported

The original absolute path check method is only applicable to *nix, because the absolute path of Windows starts with the drive letter (or \\), so listenDS is always false when configuring Unix Domain socket on Windows.

Log with the build from main branch with the same configuration:

Xray 1.8.6 (Xray, Penetrates Everything.) Custom (go1.21.4 windows/amd64)
A unified platform for anti-censorship.
Failed to start: main: failed to load config files: [.\config.yaml] > infra/conf: unable to listen on domain address: xxxxx\Xray-core\build_assets\xray.sock

[yuhan6665]

I love it! Thanks all!