http.request socketPath doesn't work on Windows

When calling http.request with the `socketPath` option on Windows in order to try to connect to a Unix domain socket, I get the following error message: ``` Error: connect ENOTSOCK C:\Users\User\AppData\Local\Temp\test.sock at PipeConnectWrap.afterConnect [as oncomplete] (net.js:1141:16) ``` There is native Unix Domain Sockets support in Windows 10 since two years, and the documentation at https://nodejs.org/api/http.html gives no indication that `socketPath` doesn't work on Windows, so I guess that this can be considered as an error. * **Version**: 12.16.3 (comes with Electron 10.1.0) * **Platform**: Windows 10, 64-bit, Build 18362.19h1_release.190318-1202 * **Subsystem**: http ### What steps will reproduce the bug? Call http.request with the `socketPath` option on Windows. Specify a Unix domain socket path.