OBS to stream directly to VLC, using own custom server(Monaserver), Windows

https://sourceforge.net/projects/monaserver/
Download & extract zip to a folder, double click to run: MonaServer.exe


get you pc ip address says it's 192.168.0.11
In OBS -- Settings -- Stream -- Service:Custom -- Server:rtmp://192.168.0.11:1935  -- OK
click Start Streaming

In VLC menu -- Media -- Stream -- Network: rtmp://192.168.0.11:1935
click the drop down arrow of [Stream] button, click [Play]

or use cmd:
"C:\Program Files (x86)\VideoLAN\VLC\vlc.exe"  rtmp://192.168.0.11:1935  --fullscreen

If you have external monitor and wanna play full screen on it, manually change in VLC Simple Preferences -- Video -- Fullscreen Video Device=\\.\DISPLAY2  -- Save

VLC to VLC direct streaming

 1st VLC:   
find your ip address, says it's 192.168.0.11
VLC menu [Media] -- [Stream] -- [File] -- [Add] -- choose your media file -- [Stream] -- [Next]
in [New destination] choose=[Http] -- [Add] -- accept port 8080 [Next] - click [Activate Transcoding] (Video H.264 + MP3 MP4) -- [Next] -- check [Stream all elementary streams] -- [Stream]

2nd VLC:
VLC menu [Media] -- [Stream] -- [Network] tab -- [network URL]: http://192.168.0.11:8080
click the drop down arrow of [Stream] button, click [Play]

or use cmd:
"C:\Program Files (x86)\VideoLAN\VLC\vlc.exe"  http://192.168.0.11:8080/  --fullscreen

If you have external monitor and wanna play full screen on it, manually change in VLC Simple Preferences -- Video -- Fullscreen Video Device=\\.\DISPLAY2  -- Save

At times, VLC not reliable, would need to repeat above for both VLC. Also, you may need to configure firewall to allow remote connection.

download assets from github till success

in Linux:

 until wget -c https://github.com/something/releases/installer.zip; do :; done