How to use Headless method of launcher Package

Best Rod code snippet using launcher.Headless

launcher.go

Source: launcher.go Github

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...31 managed bool32 serviceURL string33}34/​/​ New returns the default arguments to start browser.35/​/​ Headless will be enabled by default.36/​/​ Leakless will be enabled by default.37/​/​ UserDataDir will use OS tmp dir by default, this folder will usually be cleaned up by the OS after reboot.38func New() *Launcher {39 dir := defaults.Dir40 if dir == "" {41 dir = filepath.Join(DefaultUserDataDirPrefix, utils.RandString(8))42 }43 defaultFlags := map[flags.Flag][]string{44 flags.Bin: {defaults.Bin},45 flags.Leakless: nil,46 flags.UserDataDir: {dir},47 /​/​ use random port by default48 flags.RemoteDebuggingPort: {defaults.Port},49 /​/​ enable headless by default50 flags.Headless: nil,51 /​/​ to disable the init blank window52 "no-first-run": nil,53 "no-startup-window": nil,54 /​/​ TODO: about the "site-per-process" see https:/​/​github.com/​puppeteer/​puppeteer/​issues/​254855 "disable-features": {"site-per-process", "TranslateUI"},56 "disable-background-networking": nil,57 "disable-background-timer-throttling": nil,58 "disable-backgrounding-occluded-windows": nil,59 "disable-breakpad": nil,60 "disable-client-side-phishing-detection": nil,61 "disable-component-extensions-with-background-pages": nil,62 "disable-default-apps": nil,63 "disable-dev-shm-usage": nil,64 "disable-hang-monitor": nil,65 "disable-ipc-flooding-protection": nil,66 "disable-popup-blocking": nil,67 "disable-prompt-on-repost": nil,68 "disable-renderer-backgrounding": nil,69 "disable-sync": nil,70 "enable-automation": nil,71 "enable-features": {"NetworkService", "NetworkServiceInProcess"},72 "force-color-profile": {"srgb"},73 "metrics-recording-only": nil,74 "use-mock-keychain": nil,75 }76 if defaults.Show {77 delete(defaultFlags, flags.Headless)78 }79 if defaults.Devtools {80 defaultFlags["auto-open-devtools-for-tabs"] = nil81 }82 if inContainer {83 defaultFlags[flags.NoSandbox] = nil84 }85 if defaults.Proxy != "" {86 defaultFlags[flags.ProxyServer] = []string{defaults.Proxy}87 }88 ctx, cancel := context.WithCancel(context.Background())89 return &Launcher{90 ctx: ctx,91 ctxCancel: cancel,92 Flags: defaultFlags,93 exit: make(chan struct{}),94 browser: NewBrowser(),95 parser: NewURLParser(),96 logger: ioutil.Discard,97 }98}99/​/​ NewUserMode is a preset to enable reusing current user data. Useful for automation of personal browser.100/​/​ If you see any error, it may because you can't launch debug port for existing browser, the solution is to101/​/​ completely close the running browser. Unfortunately, there's no API for rod to tell it automatically yet.102func NewUserMode() *Launcher {103 ctx, cancel := context.WithCancel(context.Background())104 bin, _ := LookPath()105 return &Launcher{106 ctx: ctx,107 ctxCancel: cancel,108 Flags: map[flags.Flag][]string{109 flags.RemoteDebuggingPort: {"37712"},110 "no-startup-window": nil,111 flags.Bin: {bin},112 },113 browser: NewBrowser(),114 exit: make(chan struct{}),115 parser: NewURLParser(),116 logger: ioutil.Discard,117 }118}119/​/​ NewAppMode is a preset to run the browser like a native application.120func NewAppMode(u string) *Launcher {121 l := New()122 l.Set(flags.App, u).123 Set(flags.Env, "GOOGLE_API_KEY=no").124 Headless(false).125 Delete("no-startup-window").126 Delete("enable-automation")127 return l128}129/​/​ Context sets the context130func (l *Launcher) Context(ctx context.Context) *Launcher {131 ctx, cancel := context.WithCancel(ctx)132 l.ctx = ctx133 l.parser.Context(ctx)134 l.ctxCancel = cancel135 return l136}137/​/​ Set a command line argument to launch the browser.138func (l *Launcher) Set(name flags.Flag, values ...string) *Launcher {139 if strings.Contains(string(name), "=") {140 panic("flag name should not contain '='")141 }142 l.Flags[l.normalizeFlag(name)] = values143 return l144}145/​/​ Get flag's first value146func (l *Launcher) Get(name flags.Flag) string {147 if list, has := l.GetFlags(name); has {148 return list[0]149 }150 return ""151}152/​/​ Has flag or not153func (l *Launcher) Has(name flags.Flag) bool {154 _, has := l.GetFlags(name)155 return has156}157/​/​ GetFlags from settings158func (l *Launcher) GetFlags(name flags.Flag) ([]string, bool) {159 flag, has := l.Flags[l.normalizeFlag(name)]160 return flag, has161}162/​/​ Append values to the flag163func (l *Launcher) Append(name flags.Flag, values ...string) *Launcher {164 flags, has := l.GetFlags(name)165 if !has {166 flags = []string{}167 }168 return l.Set(name, append(flags, values...)...)169}170/​/​ Delete a flag171func (l *Launcher) Delete(name flags.Flag) *Launcher {172 delete(l.Flags, l.normalizeFlag(name))173 return l174}175/​/​ Bin of the browser binary path to launch, if the path is not empty the auto download will be disabled176func (l *Launcher) Bin(path string) *Launcher {177 return l.Set(flags.Bin, path)178}179/​/​ Revision of the browser to auto download180func (l *Launcher) Revision(rev int) *Launcher {181 l.browser.Revision = rev182 return l183}184/​/​ Headless switch. Whether to run browser in headless mode. A mode without visible UI.185func (l *Launcher) Headless(enable bool) *Launcher {186 if enable {187 return l.Set(flags.Headless)188 }189 return l.Delete(flags.Headless)190}191/​/​ NoSandbox switch. Whether to run browser in no-sandbox mode.192/​/​ Linux users may face "running as root without --no-sandbox is not supported" in some Linux/​Chrome combinations. This function helps switch mode easily.193/​/​ Be aware disabling sandbox is not trivial. Use at your own risk.194/​/​ Related doc: https:/​/​bugs.chromium.org/​p/​chromium/​issues/​detail?id=638180195func (l *Launcher) NoSandbox(enable bool) *Launcher {196 if enable {197 return l.Set(flags.NoSandbox)198 }199 return l.Delete(flags.NoSandbox)200}201/​/​ XVFB enables to run browser in by XVFB. Useful when you want to run headful mode on linux.202func (l *Launcher) XVFB(args ...string) *Launcher {203 return l.Set(flags.XVFB, args...)...

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browser.go

Source: browser.go Github

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...11 isInit, isClosed uint3212 once *sync.Once13 launcher *launcher.Launcher14 browser *rod.Browser15 isHeadless bool16 withDevTools bool17 withTrace bool18 slowMotionTime time.Duration19 header map[string]string20}21type Tab struct {22 launcher *launcher.Launcher23 browser *rod.Browser24 page *rod.Page25 cancelFunc func()26}27func New() (c *Browser) {28 return &Browser{29 once: &sync.Once{},30 isHeadless: true,31 header: map[string]string{},32 }33}34func (b *Browser) Headless(isHeadless bool) {35 b.isHeadless = isHeadless36}37func (b *Browser) WithDevTools(withDevTools bool) {38 b.withDevTools = withDevTools39}40func (b *Browser) WithTrace(withTrace bool) {41 b.withTrace = withTrace42}43func (b *Browser) WithSlowMotion(duration time.Duration) {44 b.slowMotionTime = duration45}46func (b *Browser) Close() {47 if atomic.LoadUint32(&b.isInit) == 1 && atomic.LoadUint32(&b.isClosed) == 0 {48 b.browser.MustClose()49 b.launcher.Cleanup()50 atomic.StoreUint32(&b.isClosed, 1)51 }52}53func (b *Browser) Run(cb func(tab *Tab) (err error)) (err error) {54 b.once.Do(func() {55 b.launcher = launcher.New().56 Headless(b.isHeadless).57 Devtools(b.withDevTools)58 var controlUrl string59 controlUrl, err = b.launcher.Launch()60 if err != nil {61 return62 }63 b.browser = rod.New().64 ControlURL(controlUrl).65 Trace(b.withTrace)66 if b.slowMotionTime > 0 {67 b.browser = b.browser.SlowMotion(b.slowMotionTime)68 }69 b.browser = b.browser.MustConnect()70 })...

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main.go

Source: main.go Github

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...13 /​/​ Delete("--headless").14 /​/​ Bin(path).MustLaunch()15 u := launcher.New().16 UserDataDir("path").17 Headless(true).18 Headless(false).19 Bin(path).MustLaunch()20 page := rod.New().ControlURL(u).MustConnect().MustPage("https:/​/​example.com")21 page.MustWaitLoad().MustScreenshot("5.png")22}...

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Headless

Using AI Code Generation

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1import (2func main() {3 c, err := cdp.Launch(cdp.Headless())4 if err != nil {5 log.Fatal(err)6 }7 defer c.Shutdown()8 cc, err := rpcc.DialContext(c.Context, c.RemoteDebuggingPort)9 if err != nil {10 log.Fatal(err)11 }12 defer cc.Close()13 if err != nil {14 log.Fatal(err)15 }16 p := page.New(cc)17 if _, err := p.Enable(); err != nil {18 log.Fatal(err)19 }20 _, err = p.DOMContentEventFired(cdp.WithTargetID(t.ID))21 if err != nil {22 log.Fatal(err)23 }24 title, err := p.GetTitle(cdp.WithTargetID(t.ID))25 if err != nil {26 log.Fatal(err)27 }28 log.Printf("title: %s29 if err != nil {30 log.Fatal(err)31 }32 _, err = p.LoadEventFired(cdp.WithTargetID(t.ID))33 if err != nil {34 log.Fatal(err)35 }36 title, err = p.GetTitle(cdp.WithTargetID(t.ID))37 if err != nil {38 log.Fatal(err)39 }40 log.Printf("title: %s41}

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Headless

Using AI Code Generation

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1import (2func main() {3 opts := []selenium.ServiceOption{4 }5 selenium.SetDebug(true)6 service, err := selenium.NewChromeDriverService("/​home/​ashish/​Downloads/​chromedriver", 9515, opts...)7 if err != nil {8 log.Fatal(err)9 }10 defer service.Stop()11 caps := selenium.Capabilities{"browserName": "chrome"}12 caps.AddChrome(chrome.Capabilities{13 Args: []string{14 },15 })16 wd, err := selenium.NewRemote(caps, "")17 if err != nil {18 log.Fatal(err)19 }20 defer wd.Quit()21 log.Fatal(err)22 }23 elem, err := wd.FindElement(selenium.ByCSSSelector, "#lst-ib")24 if err != nil {25 log.Fatal(err)26 }27 if err := elem.SendKeys("selenium"); err != nil {28 log.Fatal(err)29 }30 if err := elem.Submit(); err != nil {31 log.Fatal(err)32 }33 if err := wd.WaitWithTimeout(selenium.Condition(func(wd selenium.WebDriver) (bool, error) {34 _, err := wd.FindElement(selenium.ByCSSSelector, "h3.r")35 }), 10

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Using AI Code Generation

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1import "fmt"2import "github.com/​tebeka/​selenium"3import "github.com/​tebeka/​selenium/​chrome"4import "time"5func main() {6 opts := []selenium.ServiceOption{}7 service, err := selenium.NewChromeDriverService("chromedriver", 9515, opts...)8 if err != nil {9 fmt.Println(err)10 }11 defer service.Stop()12 caps := selenium.Capabilities{"browserName": "chrome"}13 caps.AddChrome(chrome.Capabilities{14 Args: []string{15 },16 })17 if err != nil {18 fmt.Println(err)19 }20 defer wd.Quit()21 fmt.Println(err)22 }23 elem, err := wd.FindElement(selenium.ByCSSSelector, "#code")24 if err != nil {25 fmt.Println(err)26 }27 if err := elem.Clear(); err != nil {28 fmt.Println(err)29 }30 if err := elem.SendKeys("package main\n\nimport \"fmt\"\n\nfunc main() {\n\tfmt.Println(\"Hello, playground\")\n}"); err != nil {31 fmt.Println(err)32 }33 btn, err := wd.FindElement(selenium.ByCSSSelector, "#run")34 if err != nil {35 fmt.Println(err)36 }37 if err := btn.Click(); err != nil {38 fmt.Println(err)39 }40 output, err := wd.FindElement(selenium.ByCSSSelector, "#output")41 if err != nil {42 fmt.Println(err)43 }44 text, err := output.Text()45 if err != nil {46 fmt.Println(err)47 }48 fmt.Println(text)

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1import (2func main() {3 const (4 opts := []selenium.ServiceOption{5 }6 selenium.SetDebug(true)7 service, err := selenium.NewChromeDriverService(seleniumPath, port, opts...)8 if err != nil {9 log.Fatal(err)10 }11 defer service.Stop()12 caps := selenium.Capabilities{"browserName": "chrome"}13 caps.AddChrome(chrome.Capabilities{14 Args: []string{15 },16 })17 if err != nil {18 log.Fatal(err)19 }20 defer wd.Quit()21 log.Fatal(err)22 }23 if err := wd.WaitWithTimeout(selenium.Condition("document.readyState == 'complete'"), 10*time.Second); err != nil {24 log.Fatal(err)25 }26 elem, err := wd.FindElement(selenium.ByID, "lst-ib")27 if err != nil {28 log.Fatal(err)29 }30 if err := elem.SendKeys("selenium"); err != nil {31 log.Fatal(err)32 }33 if err := elem.Submit(); err != nil {34 log.Fatal(err)35 }

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Using AI Code Generation

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1import (2func main() {3 driver := agouti.ChromeDriver(4 agouti.ChromeOptions("args", []string{5 }),6 if err := driver.Start(); err != nil {7 panic(err)8 }9 page, err := driver.NewPage()10 if err != nil {11 panic(err)12 }13 panic(err)14 }15 element, err := page.Find("#hplogo").Element()16 if err != nil {17 panic(err)18 }19 attribute, err := element.Attribute("alt")20 if err != nil {21 panic(err)22 }23 fmt.Println(attribute)24 if err := driver.Stop(); err != nil {25 panic(err)26 }27}28import (29func main() {30 driver := agouti.ChromeDriver(31 agouti.ChromeOptions("args", []string{32 }),33 if err := driver.Start(); err != nil {34 panic(err)35 }36 page, err := driver.NewPage()37 if err != nil {38 panic(err)39 }40 panic(err)41 }42 element, err := page.Find("#hplogo").Element()43 if err != nil {44 panic(err)45 }46 attribute, err := element.Attribute("alt")47 if err != nil {48 panic(err)49 }50 fmt.Println(attribute)51 if err := driver.Stop(); err != nil {52 panic(err)53 }54}

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Using AI Code Generation

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1import (2func main() {3 browser, err := launcher.NewBrowser(4 launcher.Flag("headless", true),5 launcher.Flag("disable-gpu", true),6 launcher.Flag("no-sandbox", true),7 launcher.Flag("disable-dev-shm-usage", true),8 if err != nil {9 panic(err)10 }11 c, err := cdp.New(browser)12 if err != nil {13 panic(err)14 }15 tasks := cdp.Tasks{16 cdp.WaitVisible(`#hplogo`, cdp.ByID),17 }18 if err := c.Run(tasks); err != nil {19 panic(err)20 }21 WithClip(&cdp.Viewport{22 Do(c)23 if err != nil {24 panic(err)25 }26 if err := cdp.WriteImage("screenshot.png", buf); err != nil {27 panic(err)28 }29 if err := browser.Shutdown(); err != nil {30 panic(err)31 }32 if err := browser.Wait(); err != nil {33 panic(err)34 }35 fmt.Println("Done")36}37import (

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1import "github.com/​raff/​godet"2func main() {3 launcher := godet.NewLauncher()4 launcher.Headless(true)5 launcher.Start()6 defer launcher.Kill()7 remote, _ := launcher.NewRemote()8 defer remote.Close()9 remote.WaitDocumentReady()10 title, _ := remote.GetTitle()11 println(title)12 content, _ := remote.GetPageContent()13 println(content)14}15import "github.com/​raff/​godet"16func main() {17 launcher := godet.NewLauncher()18 launcher.Headless(true)19 launcher.Start()20 defer launcher.Kill()21 remote, _ := launcher.NewRemote()22 defer remote.Close()23 remote.WaitDocumentReady()24 title, _ := remote.GetTitle()25 println(title)26 content, _ := remote.GetPageContent()27 println(content)28}29import "github.com/​raff/​godet"30func main() {31 launcher := godet.NewLauncher()32 launcher.Headless(true)33 launcher.Start()34 defer launcher.Kill()35 remote, _ := launcher.NewRemote()36 defer remote.Close()37 remote.WaitDocumentReady()38 title, _ := remote.GetTitle()39 println(title)40 content, _ := remote.GetPageContent()41 println(content)42}43import "github.com/​raff/​godet"44func main() {

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1import (2func main() {3 str, err := req.String()4 if err != nil {5 fmt.Println(err)6 }7 fmt.Println(str)8}

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1import (2func main() {3 launch := godet.NewLauncher()4 launch.ExecPath = "C:/​Program Files (x86)/​Google/​Chrome/​Application/​chrome.exe"5 launch.Start()6 remote, _ := godet.Connect(launch)7 title, _ := remote.PageTitle()8 log.Println(title)9 launch.Kill()10}

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1import (2func main() {3 launcher := launcher.NewChromeLauncher()4 err := launcher.Start()5 if err != nil {6 panic(err)7 }8 fmt.Println(launcher.GetWsURL())9}

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