when run got following errors:

static: Rendering HTML for page at URL: http://zhanzhang.baidu.com/college/articleinfo?id=995
undefined: CONSOLE ERROR RangeError: Maximum call stack size exceeded.
undefined: CONSOLE ERROR RangeError: Maximum call stack size exceeded.
undefined: CONSOLE ERROR RangeError: Maximum call stack size exceeded.

code:

staticHandler := &webloop.StaticRenderer{
		TargetBaseURL: "http://zhanzhang.baidu.com",
		WaitTimeout:   time.Second * 3,
		Log:           log.New(os.Stderr, "static: ", 0),
	}
	http.Handle("/", staticHandler)

sys env:
alpine 3.5.2
go 1.8.1

There's an error when package webkit2 is imported as follows. Could you kindly help with it? It seems that I need to install package javascriptcoregtk-3.0 for my windows 7 (64bit) , but I don't know how to do it.

Errors:

c:/go/bin/go.exe build [D:/Desktop/All_Projects/test]

pkg-config --cflags javascriptcoregtk-3.0

Package javascriptcoregtk-3.0 was not found in the pkg-config search path.
Perhaps you should add the directory containing `javascriptcoregtk-3.0.pc'
to the PKG_CONFIG_PATH environment variable
No package 'javascriptcoregtk-3.0' found
exit status 1

I try to use a exapmle:

	gtk.Init(nil)
	go func() {
		runtime.LockOSThread()
		gtk.Main()
	}()

	ctx := webloop.New()
	view := ctx.NewView()
	defer view.Close()
	view.Open("http://google.com")
	err := view.Wait()      // error in runtime
	if err != nil {
		fmt.Fprintf(os.Stderr, "Failed to load URL: %s", err)
		os.Exit(1)
	}
	res, err := view.EvaluateJavaScript("document.title")
	if err != nil {
		fmt.Fprintf(os.Stderr, "Failed to run JavaScript: %s", err)
		os.Exit(1)
	}
	fmt.Printf("JavaScript returned: %q\n", res)

It compiles, but gives an error in runtime:
"warning: no suitable Go value from object for arg 0: missing marshaler for type"

go1.12.7 linux/amd64
Ubuntu 18.04.2 LTS

How to fix it?
Thnx

how to set the http header when load the url?
For example, how to set the cookie header?

I'm coming from the CasperJS world, so bare with me if the question doesn't make any sense.

in CasperJs if I do:

var links = this.evaluate(function(){
return document.querySelectorAll('a');
});

that's going to return the list of links within the headless browser, back to the casperjs environment.

I tried to do the same thing with webloop, but obviously didn't work as I was expecting it (Had the hunch it wouldn't, but wanted to give it a try anyways).

res, err := view.EvaluateJavaScript(var links = document.getElementsByTagName(\"a\"); for(var i = 0; i < links.length; ++i) { links[i].innerHTML }; ")

Just returns the innerHTML of the last element. I thought about building and object within javascript, and then stringify that object within the function, just for the string to be parsed by GoLang, but I'm not sure if that's the right way to go about this, or if there's a function provided within Webloop to accomplish this task.

Thanks

github.com/gotk3/gotk3/glib/glib_since_2_42.go:30:44: could not determine kind of name for C.GNotificationPriority

This is running within an Ubuntu Trusty container.

I'm just trying to run the example code: https://sourcegraph.com/github.com/sourcegraph/webloop/-/blob/examples/angular-static-seo/server.go

The headless example program in the README silently hangs on Arch Linux 64bit.

Repro steps:

1. Make sure you are running
2. Install https://www.archlinux.org/packages/extra/x86_64/webkitgtk/
3. Run the headless example program from the README (https://github.com/sourcegraph/webloop#operating-a-headless-webkit-and-running-arbitrary-javascript-in-the-page)
4. Notice that the program silently hangs

System dump: https://gist.github.com/zachlatta/2fe43a3044c5dfbdb8dd

gtk 3.18 installed,

$ go install -v -tags gtk_3_18 -gcflags "-N -l" github.com/sourcegraph/webloop/...

Gives me this error:

github.com/sourcegraph/webloop/cmd/static-reverse-proxy
github.com/sourcegraph/webloop/examples/angular-static-seo
# github.com/sourcegraph/webloop/cmd/static-reverse-proxy
/usr/local/go/pkg/tool/linux_amd64/link: running gcc failed: exit status 1
/tmp/go-link-138544938/000009.o: In function `removeClosure':
/tmp/go-build/github.com/gotk3/gotk3/glib/_obj/_cgo_export.c:18: multiple definition of `removeClosure'
/tmp/go-link-138544938/000001.o:/tmp/go-build/github.com/conformal/gotk3/glib/_obj/_cgo_export.c:18: first defined here
/tmp/go-link-138544938/000009.o: In function `goMarshal':
/tmp/go-build/github.com/gotk3/gotk3/glib/_obj/_cgo_export.c:35: multiple definition of `goMarshal'
/tmp/go-link-138544938/000001.o:/tmp/go-build/github.com/conformal/gotk3/glib/_obj/_cgo_export.c:35: first defined here
collect2: error: ld returned 1 exit status

# github.com/sourcegraph/webloop/examples/angular-static-seo
/usr/local/go/pkg/tool/linux_amd64/link: running gcc failed: exit status 1
/tmp/go-link-378425330/000009.o: In function `removeClosure':
/tmp/go-build/github.com/gotk3/gotk3/glib/_obj/_cgo_export.c:18: multiple definition of `removeClosure'
/tmp/go-link-378425330/000001.o:/tmp/go-build/github.com/conformal/gotk3/glib/_obj/_cgo_export.c:18: first defined here
/tmp/go-link-378425330/000009.o: In function `goMarshal':
/tmp/go-build/github.com/gotk3/gotk3/glib/_obj/_cgo_export.c:35: multiple definition of `goMarshal'
/tmp/go-link-378425330/000001.o:/tmp/go-build/github.com/conformal/gotk3/glib/_obj/_cgo_export.c:35: first defined here
collect2: error: ld returned 1 exit status

I tried and it come out an error as follows, please kindly help with this :

pkg-config --cflags javascriptcoregtk-3.0

Package javascriptcoregtk-3.0 was not found in the pkg-config search path.
Perhaps you should add the directory containing `javascriptcoregtk-3.0.pc'
to the PKG_CONFIG_PATH environment variable
No package 'javascriptcoregtk-3.0' found
exit status 1

github.com/sqs/gotk3/glib

cc1.exe: sorry, unimplemented: 64-bit mode not compiled in

There's a .travis.yml file in the travis-ci branch, but it doesn't work yet. The difficulty is that Travis-CI uses Ubuntu 12.04 LTS VMs, which don't have an easy way of installing WebKitGTK+ 2.

See also: sourcegraph/go-webkit2#1

using static renderer is so slow. why is that?

os info：CentOS-7-x86_64

I have installed requirements

[root@localhost package]# rpm -qa | grep gtk
libwebkit2gtk-2.4.9-6.el7.x86_64
gtk3-devel-3.14.13-20.el7.x86_64
gtk3-3.14.13-20.el7.x86_64
gtk2-2.24.28-8.el7.x86_64
webkitgtk3-devel-2.4.9-6.el7.x86_64
webkitgtk3-2.4.9-6.el7.x86_64

When I do

go get github.com/sourcegraph/webloop

I get the following error message

[root@localhost package]# go get github.com/sourcegraph/webloop/
# pkg-config --cflags javascriptcoregtk-4.0
Package javascriptcoregtk-4.0 was not found in the pkg-config search path.
Perhaps you should add the directory containing `javascriptcoregtk-4.0.pc'
to the PKG_CONFIG_PATH environment variable
No package 'javascriptcoregtk-4.0' found
pkg-config: exit status 1
# github.com/gotk3/gotk3/gtk
could not determine kind of name for C.gtk_paned_get_wide_handle
could not determine kind of name for C.gtk_paned_set_wide_handle
could not determine kind of name for C.gtk_scrolled_window_get_overlay_scrolling
could not determine kind of name for C.gtk_scrolled_window_set_overlay_scrolling

package javascriptcoregtk-4.0 is not found

[root@localhost package]# find / -name "*javascriptcoregtk*"
/usr/lib64/pkgconfig/javascriptcoregtk-3.0.pc
/usr/lib64/libjavascriptcoregtk-3.0.so.0
/usr/lib64/libjavascriptcoregtk-3.0.so.0.16.17
/usr/lib64/libjavascriptcoregtk-3.0.so
[root@localhost package]# 

How to solve this problem?

I am running libgtk 3.12 in Ubuntu 14.04 and get the following when I do go get -tags gtk_3_12 github.com/sourcegraph/webloop/...

# github.com/sourcegraph/webloop/examples/angular-static-seo
/usr/local/go/pkg/tool/linux_amd64/link: running gcc failed: exit status 1
/tmp/go-link-587755410/000009.o: In function `removeClosure':
/tmp/go-build135241220/github.com/gotk3/gotk3/glib/_obj/_cgo_export.c:10: multiple definition of `removeClosure'
/tmp/go-link-587755410/000001.o:/tmp/go-build135241220/github.com/conformal/gotk3/glib/_obj/_cgo_export.c:10: first defined here
/tmp/go-link-587755410/000009.o: In function `goMarshal':
/tmp/go-build135241220/github.com/gotk3/gotk3/glib/_obj/_cgo_export.c:23: multiple definition of `goMarshal'
/tmp/go-link-587755410/000001.o:/tmp/go-build135241220/github.com/conformal/gotk3/glib/_obj/_cgo_export.c:23: first defined here
collect2: error: ld returned 1 exit status

# github.com/sourcegraph/webloop/cmd/static-reverse-proxy
/usr/local/go/pkg/tool/linux_amd64/link: running gcc failed: exit status 1
/tmp/go-link-852559976/000009.o: In function `removeClosure':
/tmp/go-build135241220/github.com/gotk3/gotk3/glib/_obj/_cgo_export.c:10: multiple definition of `removeClosure'
/tmp/go-link-852559976/000001.o:/tmp/go-build135241220/github.com/conformal/gotk3/glib/_obj/_cgo_export.c:10: first defined here
/tmp/go-link-852559976/000009.o: In function `goMarshal':
/tmp/go-build135241220/github.com/gotk3/gotk3/glib/_obj/_cgo_export.c:23: multiple definition of `goMarshal'
/tmp/go-link-852559976/000001.o:/tmp/go-build135241220/github.com/conformal/gotk3/glib/_obj/_cgo_export.c:23: first defined here
collect2: error: ld returned 1 exit status

# github.com/sqs/gojs
In file included from _cgo_export.c:4:
cgo-gcc-export-header-prolog:51:99: error: redefinition of parameter '_'
cgo-gcc-export-header-prolog:51:90: note: previous definition of '_' with type 'void *'
_cgo_export.c:74:92: error: redefinition of parameter '_'
   74 | void* nativefunction_CallAsFunction_go(void* data_ptr, JSContextRef rawCtx, void* _, void* _, GoUint argumentCount, void* arguments, JSValueRef* exception)
      |                                                                                      ~~~~~~^
_cgo_export.c:74:83: note: previous definition of '_' with type 'void *'
   74 | void* nativefunction_CallAsFunction_go(void* data_ptr, JSContextRef rawCtx, void* _, void* _, GoUint argumentCount, void* arguments, JSValueRef* exception)
      |        

libwebkit2gtk41-2.42.5
go1.22.0 linux/amd64

OS Version：CentOS-7-x86_64-Minimal-1611

WebLoop has been installed successfully.
When I run my own program. I get the following error message.

(webloop:3579): Gtk-WARNING **: cannot open display: 

Hi there,

Is there any way to get a list of javascript errors generated by webloop? If there is not, could this be added as a feature?

is there a way to configure this to wait longer so yuo do not get the Error sending IPC message: Connection reset by peer error ?

Probably best to implement it in https://github.com/sourcegraph/go-webkit2 first (see sourcegraph/go-webkit2#3).

github.com/sourcegraph/webloop/cmd/static-reverse-proxy

/home/ybin/apps/go/pkg/tool/linux_amd64/link: running gcc failed: exit status 1
/tmp/go-link-470351107/000009.o：in function ‘removeClosure’中：
/tmp/go-build851580455/github.com/gotk3/gotk3/glib/_obj/_cgo_export.c:10: multiple definition of removeClosure' /tmp/go-link-470351107/000001.o:/tmp/go-build851580455/github.com/conformal/gotk3/glib/_obj/_cgo_export.c:10：first definition /tmp/go-link-470351107/000009.o：in function ‘goMarshal’中： /tmp/go-build851580455/github.com/gotk3/gotk3/glib/_obj/_cgo_export.c:23: multiple definition ofgoMarshal'
/tmp/go-link-470351107/000001.o:/tmp/go-build851580455/github.com/conformal/gotk3/glib/_obj/_cgo_export.c:23：first definition
collect2: error：ld return 1

Hello,

Can't build gojs (a dependency of webloop):
$ go get github.com/sqs/gojs

github.com/sqs/gojs

vitavoom/go/src/github.com/sqs/gojs/context.go:17: const initializer unsafe.Pointer(uintptr(0)) is not a constant

Appears to be same as this:
crazy2be/gojs@5392714

Could it be fixed, please?

Thanks,
Howe

How to set http proxy

WebLoop should redirect frontend redirects. That is, if (say) AngularJS redirects from /foo to /bar in JavaScript, WebLoop should probably return an HTTP redirect instead of rendering the page at /bar in response to a GET /foo.

Hi! Can i use a proxy and set timeout for waiting responce from server?

I was playing around with webloop for a bit and found out that the StaticRenderer.ServeHTTP method doesn't allow to be run by more than one thread at the same time due to the locking that takes place on viewLock. Is there a reason for this or would it be possible to instantiate a new view every time ServeHTTP is executed so we can render multiple pages in parallel?

I'm relatively new to Go and would be glad if you can point me in the right direction.