Update dependency on protocol-http2.

Author: ioquatix

async-http.gemspec

@@ -29,6 +29,6 @@ Gem::Specification.new do |spec|
 	spec.add_dependency "async-pool", ">= 0.6.1"
 	spec.add_dependency "protocol-http", "~> 0.26.0"
 	spec.add_dependency "protocol-http1", "~> 0.19.0"
-	spec.add_dependency "protocol-http2", "~> 0.16.0"
+	spec.add_dependency "protocol-http2", "~> 0.17.0"
 	spec.add_dependency "traces", ">= 0.10.0"
 end

lib/async/http/protocol/http2/connection.rb

@@ -35,6 +35,10 @@ def initialize(*)
 						@write_frame_guard = Async::Semaphore.new(1)
 					end
 
+					def synchronize(&block)
+						@write_frame_guard.acquire(&block)
+					end
+					
 					def to_s
 						"\#<#{self.class} #{@count} requests, #{@streams.count} active streams>"
 					end
@@ -72,23 +76,6 @@ def close(error = nil)
 						end
 					end
 
-					def write_frame(frame)
-						# We don't want to write multiple frames at the same time.
-						@write_frame_guard.acquire do
-							super
-						end
-						
-						@stream.flush
-					end
-					
-					def write_frames(&block)
-						@write_frame_guard.acquire do
-							super
-						end
-						
-						@stream.flush
-					end
-					
 					def read_in_background(parent: Task.current)
 						raise RuntimeError, "Connection is closed!" if closed?