update HTTP.default_status_message_for to use official IANA Registry

ujifgc · Martin Verzilli · commit f026c4744501 · 2017-06-15T14:15:39.000+07:00
diff --git a/spec/std/http/http_spec.cr b/spec/std/http/http_spec.cr
@@ -85,4 +85,14 @@ describe HTTP do
       end
     end
   end
+
+  describe ".default_status_message_for" do
+    it "returns a default message for status 200" do
+      HTTP.default_status_message_for(200).should eq("OK")
+    end
+
+    it "returns an empty string on non-existent status" do
+      HTTP.default_status_message_for(0).should eq("")
+    end
+  end
 end
diff --git a/src/http/common.cr b/src/http/common.cr
@@ -300,20 +300,33 @@ module HTTP
   end
 
   # Returns the default status message of the given HTTP status code.
+  #
+  # Based on [Hypertext Transfer Protocol (HTTP) Status Code Registry](https://www.iana.org/assignments/http-status-codes/http-status-codes.xhtml)
+  #
+  # Last Updated 2017-04-14
+  #
+  # HTTP Status Codes (source: [http-status-codes-1.csv](https://www.iana.org/assignments/http-status-codes/http-status-codes-1.csv))
+  #
+  # * 1xx: Informational - Request received, continuing process
+  # * 2xx: Success - The action was successfully received, understood, and accepted
+  # * 3xx: Redirection - Further action must be taken in order to complete the request
+  # * 4xx: Client Error - The request contains bad syntax or cannot be fulfilled
+  # * 5xx: Server Error - The server failed to fulfill an apparently valid request
+  #
   def self.default_status_message_for(status_code : Int) : String
     case status_code
     when 100 then "Continue"
     when 101 then "Switching Protocols"
-    when 102 then "Processing" # RFC 2518 (WebDAV)
+    when 102 then "Processing"
     when 200 then "OK"
     when 201 then "Created"
     when 202 then "Accepted"
     when 203 then "Non-Authoritative Information"
     when 204 then "No Content"
     when 205 then "Reset Content"
     when 206 then "Partial Content"
-    when 207 then "Multi-Status"     # RFC 2518 (WebDAV)
-    when 208 then "Already Reported" # RFC 5842
+    when 207 then "Multi-Status"
+    when 208 then "Already Reported"
     when 226 then "IM Used"
     when 300 then "Multiple Choices"
     when 301 then "Moved Permanently"
@@ -322,7 +335,7 @@ module HTTP
     when 304 then "Not Modified"
     when 305 then "Use Proxy"
     when 307 then "Temporary Redirect"
-    when 308 then "Permanent Redirect" # RFC 7238
+    when 308 then "Permanent Redirect"
     when 400 then "Bad Request"
     when 401 then "Unauthorized"
     when 402 then "Payment Required"
@@ -336,32 +349,30 @@ module HTTP
     when 410 then "Gone"
     when 411 then "Length Required"
     when 412 then "Precondition Failed"
-    when 413 then "Request Entity Too Large"
-    when 414 then "Request-URI Too Long"
+    when 413 then "Payload Too Large"
+    when 414 then "URI Too Long"
     when 415 then "Unsupported Media Type"
-    when 416 then "Requested Range Not Satisfiable"
+    when 416 then "Range Not Satisfiable"
     when 417 then "Expectation Failed"
-    when 418 then "I'm a teapot" # RFC 2324
     when 421 then "Misdirected Request"
-    when 422 then "Unprocessable Entity" # RFC 2518 (WebDAV)
-    when 423 then "Locked"               # RFC 2518 (WebDAV)
-    when 424 then "Failed Dependency"    # RFC 2518 (WebDAV)
-    when 426 then "Upgrade Required"     # RFC 2817
+    when 422 then "Unprocessable Entity"
+    when 423 then "Locked"
+    when 424 then "Failed Dependency"
+    when 426 then "Upgrade Required"
     when 428 then "Precondition Required"
     when 429 then "Too Many Requests"
     when 431 then "Request Header Fields Too Large"
-    when 449 then "Retry With" # unofficial Microsoft
     when 451 then "Unavailable For Legal Reasons"
     when 500 then "Internal Server Error"
     when 501 then "Not Implemented"
     when 502 then "Bad Gateway"
     when 503 then "Service Unavailable"
     when 504 then "Gateway Timeout"
     when 505 then "HTTP Version Not Supported"
-    when 506 then "Variant Also Negotiates"  # RFC 2295
-    when 507 then "Insufficient Storage"     # RFC 2518 (WebDAV)
-    when 509 then "Bandwidth Limit Exceeded" # unofficial
-    when 510 then "Not Extended"             # RFC 2774
+    when 506 then "Variant Also Negotiates"
+    when 507 then "Insufficient Storage"
+    when 508 then "Loop Detected"
+    when 510 then "Not Extended"
     when 511 then "Network Authentication Required"
     else          ""
     end
