Introduce Protocol::HTTP::RequestRefusedError.

Author: samuel-williams-shopify

lib/protocol/http/error.rb

@@ -9,6 +9,10 @@ module HTTP
 		class Error < StandardError
 		end
 
+		# Raised when a request was not processed by the server and can be safely retried, even for non-idempotent methods.
+		class RequestRefusedError < Error
+		end
+		
 		# Represents a bad request error (as opposed to a server error).
 		# This is used to indicate that the request was malformed or invalid.
 		module BadRequest

releases.md

@@ -1,5 +1,9 @@
 # Releases
 
+## Unreleased
+
+  - Introduce `Protocol::HTTP::RequestRefusedError` for indicating a request was not processed by the server and can be safely retried.
+
 ## v0.60.0
 
   - Expose `Protocol::HTTP::Body::Writable#count` attribute to provide access to the number of chunks written to the body.

test/protocol/http/error.rb

@@ -5,6 +5,20 @@
 
 require "protocol/http/error"
 
+describe Protocol::HTTP::RequestRefusedError do
+	let(:error) {subject.new("GOAWAY: request not processed.")}
+	
+	with "#initialize" do
+		it "is an HTTP error" do
+			expect(error).to be_a(Protocol::HTTP::Error)
+		end
+		
+		it "has a descriptive message" do
+			expect(error.message).to be == "GOAWAY: request not processed."
+		end
+	end
+end
+
 describe Protocol::HTTP::DuplicateHeaderError do
 	let(:key) {"content-length"}
 	let(:existing_value) {"100"}