Improve performance by using read_partial.

Author: ioquatix

async-http.gemspec

@@ -17,7 +17,7 @@ Gem::Specification.new do |spec|
 	spec.require_paths = ["lib"]
 
 	spec.add_dependency("async", "~> 1.6")
-	spec.add_dependency("async-io", "~> 1.7")
+	spec.add_dependency("async-io", "~> 1.8")
 
 	spec.add_dependency("http-2", "~> 0.9.0")
 	# spec.add_dependency("openssl")

lib/async/http/body/fixed.rb

@@ -24,8 +24,6 @@ module Async
 	module HTTP
 		module Body
 			class Fixed < Readable
-				CHUNK_SIZE = 1024*8
-				
 				def initialize(stream, length)
 					@stream = stream
 					@length = length
@@ -38,9 +36,7 @@ def empty?
 
 				def read
 					if @remaining > 0
-						amount = [@remaining, CHUNK_SIZE].min
-						
-						if chunk = @stream.read(amount)
+						if chunk = @stream.read_partial(@remaining)
 							@remaining -= chunk.bytesize
 
 							return chunk