Remote control interface oldrc not functional

The remote control interface "oldrc" no longer seems to be functional in VLC v3.0.0. The settings do not appear to have changed in the settings dialog.

Tested with v2.2.8 and v3.0.0 to verify the issue.

Also tested with nightly builds vlc-3.0.1-20180212-1126-win32 and vlc-4.0.0-20180212-0311-dev-win32.

Steps to Reproduce:

1. Install VLC (clear preferences and cache)

2. Tools -> Preferences

3. Show Settings -> Select "All"

4. Interface -> Main interfaces -> Select "Web" and "Remote control interface"

5. Interface -> Main interfaces -> Lua -> Lua HTTP -> Configure "password"

6. Interface -> Main interfaces -> Lua -> Lua CLI -> Configure "TCP command input" -> ":8081"

7. Save

8. Verify that on restart, VLC is listening on port 8081

• Note that port 8080 is the http ("web") interface and is not necessary to reproduce the issue.

OS:

Tested on Windows 7 SP1

Relevant Config (same for both versions):

• This is the configuration after making the changes in the setup steps above.

[oldrc] # Remote control interface

[lua] # Lua interpreter

Password (string)

http-password=

TCP command input (string)

rc-host=:8081

[core]

extraintf=http:oldrc

Listening Ports (v2.2.8):

TCP :8080 LISTENING

TCP :8081 LISTENING

Results (v2.2.8):

• Shows main video window

• Shows DOS box window with status changes on demand

• On main window close, the DOS box is automatically dismissed without error

Listening Ports (v3.0.0):

TCP :8080 LISTENING

Results (v3.0.0):

• Shows main video window only, oldrc DOS box is missing

Things Tried (manual config edits):

• Using the host configuration setting in the "[oldrc]" section of the config file didn't help.

[oldrc] # Remote control interface

TCP command input (string)

rc-host=:8081

• Changing rc-host to cli-host in the "[lua]" section causes the DOS box to open, but no port 8081 listener is created.

• In this case, closing the main application window causes the DOS box to stay open, at which point no further instances of VLC can be started.

[lua] # Lua interpreter

CLI input (string)

cli-host=:8081

• Changing the rc-host to telnet behaves the same as cli-host above

• Various combinations of , localhost, port, no-port don't seem to make any difference.

• Trying without the http interface doesn't seem to make any difference. The oldrc interface always fails to start.

Logs (2.2.8):

• There don't appear to be any log messages (at any level) for either oldrc or http interfaces.

Logs (>= 3.0.0):

...

main debug: using interface module "lua"

main debug: looking for interface module matching "oldrc,none": 16 candidates

lua: Lua HTTP interface

main debug: creating VLM

lua debug: Loaded C:\Program Files (x86)\VideoLAN\VLC\lua\http/custom.lua

oldrc debug: base: (null), port: 0

main debug: net: listening to * port 0

main debug: net: listening to * port 8080

main error: Cannot resolve port 0 : No such host is known.

oldrc warning: can't listen to (null) port 0

main debug: no interface modules matched

main error: no suitable interface module

main error: interface "oldrc,none" initialization failed

...