Helper script for running VcXsrv from WSL

README.md

Helper script for running VcXsrv from WSL

Add it to .bashrc

# Autostart VcXsrv
. <(~/vcxserv_helpers.sh ~/.vcxsrv.port)

vcxserv_helpers.sh

#!/usr/bin/env bash

set -euo pipefail

randin () {
    local ceil="$1"
    local floor="$2"
    local interval="$(("$ceil"-"$floor"+1))"
    local result="$RANDOM"
    let "result %= $interval"
    echo "$(($result+$floor))"
}

vcxserv () {
    nohup "/mnt/c/Program Files/VcXsrv/vcxsrv.exe" -multiwindow -clipboard -wgl "$1" > /dev/null 2>&1 &
    sleep 1
    xserver_running "$1"
}

vcxserv_env () {
    local port="$1"
    echo "export LIBGL_ALWAYS_INDIRECT=1"
    echo "export DISPLAY=localhost:${port@Q}.0"
}

xserver_running () {
    timeout 1s xset -display "$1" q &>/dev/null
}

error() { echo "$@" 1>&2; }

vcxserv_start () {
    local port_file="$1" port
    if [[ -r "$port_file" ]] && port="$(cat "$port_file")" && xserver_running ":$port"; then
        vcxserv_env "$port";
        return 0;
    fi
    port="$(randin 50000 10000)"
    if ! vcxserv ":$port"; then
        error "Failed to start server on display :${port}"
        return 1
    fi
    echo "$port" > "$port_file"
    vcxserv_env "$port"
}

vcxserv_start "$1"