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hijack_test.go
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package rod_test
import (
"context"
"errors"
"fmt"
"io/ioutil"
"net/http"
"sync"
"github.com/go-rod/rod"
"github.com/go-rod/rod/lib/proto"
"github.com/go-rod/rod/lib/utils"
"github.com/ysmood/gson"
)
func (t T) Hijack() {
s := t.Serve()
// to simulate a backend server
s.Route("/", slash("fixtures/fetch.html"))
s.Mux.HandleFunc("/a", func(w http.ResponseWriter, r *http.Request) {
if r.Method != http.MethodPost {
panic("wrong http method")
}
t.Eq("header", r.Header.Get("Test"))
b, err := ioutil.ReadAll(r.Body)
t.E(err)
t.Eq("a", string(b))
t.HandleHTTP(".html", "test")(w, r)
})
s.Route("/b", "", "b")
router := t.page.HijackRequests()
defer router.MustStop()
router.MustAdd(s.URL("/a"), func(ctx *rod.Hijack) {
r := ctx.Request.SetContext(context.Background())
r.Req().URL = r.Req().URL // override request url
r.Req().Header.Set("Test", "header") // override request header
r.SetBody([]byte("test")) // override request body
r.SetBody(123) // override request body
r.SetBody(r.Body()) // override request body
t.Eq(http.MethodPost, r.Method())
t.Eq(s.URL("/a"), r.URL().String())
t.Eq(proto.NetworkResourceTypeXHR, ctx.Request.Type())
t.Has(ctx.Request.Header("Origin"), s.URL())
t.Len(ctx.Request.Headers(), 5).Msg("%s", utils.Dump(ctx.Request.Headers()))
t.True(ctx.Request.JSONBody().Nil())
// send request load response from real destination as the default value to hijack
ctx.MustLoadResponse()
t.Eq(200, ctx.Response.Payload().ResponseCode)
// override status code
ctx.Response.Payload().ResponseCode = http.StatusCreated
t.Eq("4", ctx.Response.Headers().Get("Content-Length"))
t.Has(ctx.Response.Headers().Get("Content-Type"), "text/html; charset=utf-8")
// override response header
ctx.Response.SetHeader("Set-Cookie", "key=val")
// override response body
ctx.Response.SetBody([]byte("test"))
ctx.Response.SetBody("test")
ctx.Response.SetBody(map[string]string{
"text": "test",
})
t.Eq("{\"text\":\"test\"}", ctx.Response.Body())
})
router.MustAdd(s.URL("/b"), func(ctx *rod.Hijack) {
panic("should not come to here")
})
router.MustRemove(s.URL("/b"))
router.MustAdd(s.URL("/b"), func(ctx *rod.Hijack) {
// transparent proxy
ctx.MustLoadResponse()
})
go router.Run()
t.page.MustNavigate(s.URL())
t.Eq("201 test key=val", t.page.MustElement("#a").MustText())
t.Eq("b", t.page.MustElement("#b").MustText())
}
func (t T) HijackContinue() {
s := t.Serve().Route("/", ".html", `<body>ok</body>`)
router := t.page.HijackRequests()
defer router.MustStop()
wg := &sync.WaitGroup{}
wg.Add(1)
router.MustAdd("*", func(ctx *rod.Hijack) {
ctx.ContinueRequest(&proto.FetchContinueRequest{})
wg.Done()
})
go router.Run()
t.page.MustNavigate(s.URL())
t.Eq("ok", t.page.MustElement("body").MustText())
wg.Wait()
}
func (t T) HijackOnErrorLog() {
s := t.Serve().Route("/", ".html", `<body>ok</body>`)
router := t.page.HijackRequests()
defer router.MustStop()
wg := &sync.WaitGroup{}
wg.Add(1)
var err error
router.MustAdd("*", func(ctx *rod.Hijack) {
ctx.OnError = func(e error) {
err = e
wg.Done()
}
ctx.ContinueRequest(&proto.FetchContinueRequest{})
})
go router.Run()
t.mc.stub(1, proto.FetchContinueRequest{}, func(send StubSend) (gson.JSON, error) {
return gson.New(nil), errors.New("err")
})
ctx, cancel := context.WithCancel(context.Background())
defer cancel()
go func() {
_ = t.page.Context(ctx).Navigate(s.URL())
}()
wg.Wait()
t.Eq(err.Error(), "err")
}
func (t T) HijackFailRequest() {
s := t.Serve().Route("/", ".html", `<html>
<body></body>
<script>
fetch('/a').catch(async (err) => {
document.title = err.message
})
</script></html>`)
router := t.browser.HijackRequests()
defer router.MustStop()
err := make(chan error)
router.MustAdd(s.URL("/a"), func(ctx *rod.Hijack) {
ctx.OnError = func(e error) { err <- e }
ctx.Response.Fail(proto.NetworkErrorReasonAborted)
})
go router.Run()
t.page.MustNavigate(s.URL()).MustWaitLoad()
t.page.MustWait(`document.title == 'Failed to fetch'`)
{ // test error log
t.mc.stubErr(1, proto.FetchFailRequest{})
t.page.MustNavigate(s.URL())
t.Err(<-err)
}
}
func (t T) HijackLoadResponseErr() {
ctx, cancel := context.WithCancel(context.Background())
defer cancel()
p := t.page.Context(ctx)
router := p.HijackRequests()
defer router.MustStop()
wg := &sync.WaitGroup{}
wg.Add(1)
router.MustAdd("*", func(ctx *rod.Hijack) {
t.Err(ctx.LoadResponse(&http.Client{
Transport: &MockRoundTripper{err: errors.New("err")},
}, true))
t.Err(ctx.LoadResponse(&http.Client{
Transport: &MockRoundTripper{res: &http.Response{
StatusCode: 200,
Body: ioutil.NopCloser(&MockReader{err: errors.New("err")}),
}},
}, true))
wg.Done()
})
go router.Run()
go func() { _ = p.Navigate(t.srcFile("./fixtures/click.html")) }()
wg.Wait()
}
func (t T) HijackResponseErr() {
s := t.Serve().Route("/", ".html", `ok`)
ctx, cancel := context.WithCancel(context.Background())
defer cancel()
p := t.page.Context(ctx)
router := p.HijackRequests()
defer router.MustStop()
wg := &sync.WaitGroup{}
wg.Add(1)
router.MustAdd("*", func(ctx *rod.Hijack) {
ctx.OnError = func(err error) {
t.Err(err)
wg.Done()
}
ctx.MustLoadResponse()
t.mc.stubErr(1, proto.FetchFulfillRequest{})
})
go router.Run()
go func() { _ = p.Navigate(s.URL()) }()
wg.Wait()
}
func (t T) HandleAuth() {
s := t.Serve()
// mock the server
s.Mux.HandleFunc("/", func(w http.ResponseWriter, r *http.Request) {
u, p, ok := r.BasicAuth()
if !ok {
w.Header().Add("WWW-Authenticate", `Basic realm="web"`)
w.WriteHeader(401)
return
}
t.Eq("a", u)
t.Eq("b", p)
t.HandleHTTP(".html", `<p>ok</p>`)(w, r)
})
s.Route("/err", ".html", "err page")
t.browser.MustHandleAuth("a", "b")
page := t.browser.MustPage(s.URL())
defer page.MustClose()
page.MustElementR("p", "ok")
wait := t.browser.HandleAuth("a", "b")
var page2 *rod.Page
wait2 := utils.All(func() {
page2, _ = t.browser.Page(s.URL("/err"))
})
t.mc.stubErr(1, proto.FetchContinueRequest{})
t.Err(wait())
wait2()
page2.MustClose()
}
func (t T) GetDownloadFile() {
s := t.Serve()
content := "test content"
s.Route("/d", ".bin", []byte(content))
s.Route("/", ".html", fmt.Sprintf(`<html><a href="%s/d" download>click</a></html>`, s.URL()))
page := t.page.MustNavigate(s.URL())
wait := page.MustGetDownloadFile(s.URL("/d")) // the pattern is used to prevent favicon request
page.MustElement("a").MustClick()
data := wait()
t.Eq(content, string(data))
waitErr := page.GetDownloadFile(s.URL("/d"), "", &http.Client{
Transport: &MockRoundTripper{err: errors.New("err")},
})
page.MustElement("a").MustClick()
{
t.mc.stubErr(1, proto.FetchEnable{})
_, _, err := waitErr()
t.Err(err)
}
_, _, err := waitErr()
t.Err(err)
}
func (t T) GetDownloadFileFromDataURI() {
s := t.Serve()
s.Route("/", ".html",
`<html>
<a id="a" href="data:text/plain;,test%20data" download>click</a>
<a id="b" download>click</a>
<script>
const b = document.getElementById('b')
b.href = URL.createObjectURL(new Blob(['test blob'], {
type: "text/plain; charset=utf-8"
}))
</script>
</html>`,
)
page := t.page.MustNavigate(s.URL())
wait := page.MustGetDownloadFile("data:*")
page.MustElement("#a").MustClick()
data := wait()
t.Eq("test data", string(data))
wait = page.MustGetDownloadFile("data:*")
page.MustElement("#b").MustClick()
data = wait()
t.Eq("test blob", string(data))
t.Panic(func() {
wait = page.MustGetDownloadFile("data:*")
page.MustElement("#b").MustClick()
t.mc.stubErr(1, proto.RuntimeCallFunctionOn{})
data = wait()
})
}
func (t T) GetDownloadFileWithHijack() {
s := t.Serve()
content := "test content"
s.Route("/d", ".bin", []byte(content))
s.Route("/", ".html", fmt.Sprintf(`<html><a href="%s" download>click</a></html>`, s.URL("/d")))
page := t.page.MustNavigate(s.URL())
r := page.HijackRequests()
r.MustAdd("*", func(ctx *rod.Hijack) {
ctx.OnError = func(error) {}
ctx.MustLoadResponse()
})
go r.Run()
defer r.MustStop()
wait := page.MustGetDownloadFile(s.URL("/d")) // the pattern is used to prevent favicon request
page.MustElement("a").MustClick()
data := wait()
t.Eq(content, string(data))
}