do not protect json by default

Author: joecorall

README.md

@@ -101,7 +101,7 @@ services:
 | `ipForwardedHeader`     | `string`                | `""`                    | Header to check for the original client IP if Traefik is behind a load balancer.                                                                                                          |
 | `goodBots`              | `[]string` (encouraged) | *see below*             | List of second-level domains for bots that are never challenged or rate-limited.                                                                                                          |
 | `protectParameters`     | `string`                | `"false"`               | Forces rate limiting even for good bots if URL parameters are present. Useful for protecting faceted search pages.                                                                        |
-| `protectFileExtensions` | `[]string`              | `""`                    | Comma-separated file extentions to protect. By default, your protected routes only protect html and json files. This is to prevent files like CSS/JS/img from tripping the rate limit.    |
+| `protectFileExtensions` | `[]string`              | `""`                    | Comma-separated file extentions to protect. By default, your protected routes only protect html files. This is to prevent files like CSS/JS/img from tripping the rate limit.             |
 | `exemptIps`             | `[]string`              | `privateIPs`            | CIDR-formatted IPs that should never be challenged. Private IP ranges are always exempt.                                                                                                  |
 | `challengeURL`          | `string`                | `"/challenge"`          | URL where challenges are served. This will override existing routes if there is a conflict.                                                                                               |
 | `challengeTmpl`         | `string`                | `"./challenge.tmpl.html"`| Path to the Go HTML template for the captcha challenge page.                                                                                                                             |

main.go

@@ -77,7 +77,6 @@ func CreateConfig() *Config {
 		ProtectRoutes:     []string{},
 		ProtectFileExtensions: []string{
 			"html",
-			"json",
 		},
 		GoodBots: []string{},
 		ExemptIPs: []string{

main_test.go

@@ -304,15 +304,6 @@ func TestRouteIsProtected(t *testing.T) {
 			path:     "/foo/bar/style.css",
 			expected: true,
 		},
-		{
-			name: "json always protected",
-			config: Config{
-				ProtectRoutes:         []string{"/"},
-				ProtectFileExtensions: []string{"css", "js"},
-			},
-			path:     "/foo/data.json",
-			expected: true,
-		},
 		{
 			name: "html always protected",
 			config: Config{