init

selenium/external-host/Dockerfile

@@ -0,0 +1,28 @@
+FROM golang:1.17 as go
+
+COPY choose /choose
+
+COPY rproxy /rproxy
+
+RUN \
+    apt-get update && \
+    apt-get install -y upx-ucl && \
+    cd /choose && \
+    GOOS=linux GOARCH=amd64 go build -ldflags="-s -w" && \
+    upx /choose/choose && \
+    cd /rproxy && \
+    GOOS=linux GOARCH=amd64 go build -ldflags="-s -w" && \
+    upx /rproxy/rproxy
+
+FROM ubuntu:18.04
+
+COPY --from=go /choose/choose /usr/local/bin/
+COPY --from=go /rproxy/rproxy /usr/local/bin/
+
+RUN \
+    apt update && \
+    apt -y install xvfb x11-utils x11vnc tigervnc-common tigervnc-viewer
+
+COPY entrypoint.sh /
+ENTRYPOINT ["/entrypoint.sh"]
+

selenium/external-host/README.md

@@ -0,0 +1,16 @@
+#browsers.json
+
+```
+	"MicrosoftEdge": {
+                "default": "77",
+                "versions": {
+                        "77": {
+                                "image": "selenoid/external-host:1.0.0",
+                                "port": "4444",
+                                "path": "/",
+				"env": ["URLS=[\"http://172.17.0.1:4444/\"]","VNC_PASSWORD=longpassword","SCREEN_RESOLUTION=1921x1080x24"]
+                        }
+                }
+        }
+
+```

selenium/external-host/choose/main.go

@@ -0,0 +1,30 @@
+package main
+
+import (
+	"os"
+	"time"
+	"fmt"
+	"encoding/json"
+	"math/rand"
+)
+
+var (
+	s rand.Source
+	r *rand.Rand
+)
+
+func init() {
+	s = rand.NewSource(time.Now().Unix())
+	r = rand.New(s)
+}
+
+func main() {
+	var hosts []string
+	if err := json.Unmarshal([]byte(os.Getenv("URLS")), &hosts); err != nil {
+		fmt.Printf("unmarshal json: %v", err)
+		os.Exit(1)
+	}
+	if l := len(hosts); l > 0 {
+		fmt.Println(hosts[r.Intn(l)])
+	}
+}

selenium/external-host/entrypoint.sh

@@ -0,0 +1,51 @@
+#!/bin/bash
+SCREEN_RESOLUTION=${SCREEN_RESOLUTION:-"1920x1080x24"}
+DISPLAY_NUM=99
+URLS=${URLS:-'["http://172.17.0.1:4444/"]'}
+VNC_PASSWORD=${VNC_PASSWORD:-"password"}
+export URLS
+export VNC_PASSWORD
+export DISPLAY=":$DISPLAY_NUM"
+
+clean() {
+  if [ -n "$XVFB_PID" ]; then
+    kill -TERM "$XVFB_PID"
+  fi
+  if [ -n "$X11VNC_PID" ]; then
+    kill -TERM "$X11VNC_PID"
+  fi
+  if [ -n "$RPROXY_PID" ]; then
+    kill -TERM "$RPROXY_PID"
+  fi
+
+}
+
+trap clean SIGINT SIGTERM
+
+URL=$(choose $URL)
+HOST=$(echo $URL | sed -e  's@\(.*\)://@@' -e 's@[:/]\(.*\)$@@')
+
+/bin/bash -c 'echo -e "$VNC_PASSWORD\n$VNC_PASSWORD\nn\n" | vncpasswd file.passwd'>/dev/null
+
+xvfb-run -l -n $DISPLAY_NUM -s "-ac -screen 0 $SCREEN_RESOLUTION -noreset -listen tcp" \
+	vncviewer passwd=file.passwd $HOST &
+XVFB_PID=$!
+
+retcode=1
+until [ $retcode -eq 0 ]; do
+  xdpyinfo -display $DISPLAY >/dev/null 2>&1
+  retcode=$?
+  if [ $retcode -ne 0 ]; then
+    echo Waiting xvfb...
+    sleep 1
+  fi
+done
+
+x11vnc -display $DISPLAY -passwd selenoid -shared -forever -loop500 -rfbport 5900 -rfbportv6 5900 -logfile /dev/null &
+X11VNC_PID=$!
+
+rproxy $URL &
+RPROXY_PID=$!
+
+wait
+

selenium/external-host/rproxy/main.go

@@ -0,0 +1,17 @@
+package main
+
+import (
+	"log"
+	"net/http"
+	"net/http/httputil"
+	"net/url"
+	"os"
+)
+
+func main() {
+	u, err := url.Parse(os.Args[1])
+	if err != nil {
+		log.Fatalf("parse url: %v", err)
+	}
+	log.Fatal(http.ListenAndServe(":4444", httputil.NewSingleHostReverseProxy(u)))
+}