There are repeated slashes when jumping to index

[hungtcs]

The regular match contains a slash, but an extra slash is spliced below.

echo-swagger/swagger.go

Lines 131 to 164 in 5602047

	var re = regexp.MustCompile(`^(.*/)([^?].*)?[?|.]*$`)
	return func(c echo.Context) error {
	if c.Request().Method != http.MethodGet {
	return echo.NewHTTPError(http.StatusMethodNotAllowed, http.StatusText(http.StatusMethodNotAllowed))
	}
	matches := re.FindStringSubmatch(c.Request().RequestURI)
	path := matches[2]
	switch filepath.Ext(path) {
	case ".html":
	c.Response().Header().Set("Content-Type", "text/html; charset=utf-8")
	case ".css":
	c.Response().Header().Set("Content-Type", "text/css; charset=utf-8")
	case ".js":
	c.Response().Header().Set("Content-Type", "application/javascript")
	case ".json":
	c.Response().Header().Set("Content-Type", "application/json; charset=utf-8")
	case ".yaml":
	c.Response().Header().Set("Content-Type", "text/plain; charset=utf-8")
	case ".png":
	c.Response().Header().Set("Content-Type", "image/png")
	}
	response := c.Response()
	// This check fixes an error introduced here: https://github.com/labstack/echo/blob/8da8e161380fd926d4341721f0328f1e94d6d0a2/response.go#L86-L88
	if _, ok := response.Writer.(http.Flusher); ok {
	defer response.Flush()
	}
	switch path {
	case "":
	_ = c.Redirect(http.StatusMovedPermanently, matches[1]+"/"+"index.html")

So if you access the path /swagger/, you will get /swagger//index.html

[evan-goode]

This is my workaround FWIW:

swaggerRedirect := func(c echo.Context) error {
    return c.Redirect(http.StatusMovedPermanently, "/api/v1/doc/index.html")
}
e.GET("/api/v1/doc", swaggerRedirect)
e.GET("/api/v1/doc/", swaggerRedirect)
e.GET("/api/v1/doc/*", echoSwagger.WrapHandler)

[kripsy]

I have same problem.
I'm going to look to the gin side...

[zonescape]

This code solves both extra slash issue and issue with fetching docs through rewriting proxy:

swagHandler := echoSwagger.WrapHandler
e.GET("/docs/*", func(c *echo.Context) error {
	if c.Param("*") == "" {
		return c.Redirect(http.StatusMovedPermanently, "index.html")
	}
	return swagHandler(c)
})