Xpra Audio Input Forwarding

[abdulqadeer47]

I am trying to enable microphone within a seamless Xpra containerized session. I currently have a minimal setup and am using ubuntu:22.04 image. PulseAudio is installed and audio output forwarding is working. The microphone is not capturing any sound when connecting via the HTML5 client through my chrome browser. What is the correct way to configure PulseAudio (or Xpra) in a container so that microphone input works?

`xpra start :100 \
    --start-child=firefox \
    --html=on \
    --bind-tcp=14500 \
    --microphone=on \
    --speaker=on \
    --daemon=no \
    --exit-with-children=yes`

Console logs:

sound enabled, audio codec string: null
connection_progress( Initializing ,   ,  20 )
audio codec MediaSource supported: Array(0)
audio codec MediaSource not available: Object
audio aurora codecs supported: Map(0)
audio aurora codecs not available: Map(0)
using mediasource audio codec: vorbis+mka
audio codecs:  Array(3)0: "mp3"1: "vorbis+mka"2: "wav"length: 3[[Prototype]]: Array(0)

2025-08-20 03:16:40,597 pulseaudio server started with pid 51
2025-08-20 03:16:40,597  private server socket path:
2025-08-20 03:16:40,597  '/tmp/0/pulse/pulse/native'
W: [pulseaudio] main.c: This program is not intended to be run as root (unless --system is specified).
E: [pulseaudio] core-util.c: Failed to connect to system bus: Failed to connect to socket /run/dbus/system_bus_socket: No such file or directory
E: [pulseaudio] core-util.c: Failed to connect to system bus: Failed to connect to socket /run/dbus/system_bus_socket: No such file or directory
E: [pulseaudio] core-util.c: Failed to connect to system bus: Failed to connect to socket /run/dbus/system_bus_socket: No such file or directory
E: [pulseaudio] core-util.c: Failed to connect to system bus: Failed to connect to socket /run/dbus/system_bus_socket: No such file or directory
E: [pulseaudio] core-util.c: Failed to connect to system bus: Failed to connect to socket /run/dbus/system_bus_socket: No such file or directory
E: [pulseaudio] core-util.c: Failed to connect to system bus: Failed to connect to socket /run/dbus/system_bus_socket: No such file or directory
E: [pulseaudio] core-util.c: Failed to connect to system bus: Failed to connect to socket /run/dbus/system_bus_socket: No such file or directory
E: [pulseaudio] core-util.c: Failed to connect to system bus: Failed to connect to socket /run/dbus/system_bus_socket: No such file or directory
E: [pulseaudio] core-util.c: Failed to connect to system bus: Failed to connect to socket /run/dbus/system_bus_socket: No such file or directory
E: [pulseaudio] core-util.c: Failed to connect to system bus: Failed to connect to socket /run/dbus/system_bus_socket: No such file or directory
E: [pulseaudio] core-util.c: Failed to connect to system bus: Failed to connect to socket /run/dbus/system_bus_socket: No such file or directory
E: [null-sink] util.c: Failed to connect to system bus: Failed to connect to socket /run/dbus/system_bus_socket: No such file or directory
E: [null-sink] util.c: Failed to connect to system bus: Failed to connect to socket /run/dbus/system_bus_socket: No such file or directory
E: [null-sink] util.c: Failed to connect to system bus: Failed to connect to socket /run/dbus/system_bus_socket: No such file or directory
E: [null-sink] util.c: Failed to connect to system bus: Failed to connect to socket /run/dbus/system_bus_socket: No such file or directory
E: [null-sink] util.c: Failed to connect to system bus: Failed to connect to socket /run/dbus/system_bus_socket: No such file or directory
E: [null-sink] util.c: Failed to connect to system bus: Failed to connect to socket /run/dbus/system_bus_socket: No such file or directory
E: [null-sink] util.c: Failed to connect to system bus: Failed to connect to socket /run/dbus/system_bus_socket: No such file or directory
E: [null-sink] util.c: Failed to connect to system bus: Failed to connect to socket /run/dbus/system_bus_socket: No such file or directory
E: [null-sink] util.c: Failed to connect to system bus: Failed to connect to socket /run/dbus/system_bus_socket: No such file or directory
E: [null-sink] util.c: Failed to connect to system bus: Failed to connect to socket /run/dbus/system_bus_socket: No such file or directory
W: [pulseaudio] authkey.c: Failed to open cookie file '/root/.config/pulse/cookie': No such file or directory
W: [pulseaudio] authkey.c: Failed to load authentication key '/root/.config/pulse/cookie': No such file or directory
W: [pulseaudio] authkey.c: Failed to open cookie file '/root/.pulse-cookie': No such file or directory
W: [pulseaudio] authkey.c: Failed to load authentication key '/root/.pulse-cookie': No such file or directory

[totaam]

I don't think that microphone forwarding was ever implemented in the HTML5 client.