Bump version to 0.1.4.

.travis.yml

@@ -5,11 +5,14 @@ rvm:
   - 1.9.3
   - 2.0.0
   - 2.1.10
-  - 2.2.5
-  - 2.3.1
+  - 2.2.7
+  - 2.3.4
+  - 2.4.1
   - jruby-19mode
   - jruby-9
-  - rbx-2
+
+before_install:
+  - '[[ "$(ruby --version)" == *"1.9.3"* ]] && gem update --system 2.4.8 || true'
 
 script:
   - bundle exec rspec -c spec

CHANGELOG.md

@@ -1,3 +1,8 @@
+### 0.1.4 / 2017-09-10
+
+* Use `9` instead of `8` as the `windowBits` parameter to zlib, to deal with
+  restrictions introduced in zlib v1.2.9
+
 ### 0.1.3 / 2016-05-20
 
 * Amend all warnings issued when running with -W2

LICENSE.md

@@ -0,0 +1,21 @@
+# The MIT License
+
+Copyright (c) 2014-2017 James Coglan
+
+Permission is hereby granted, free of charge, to any person obtaining a copy of
+this software and associated documentation files (the 'Software'), to deal in
+the Software without restriction, including without limitation the rights to
+use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of
+the Software, and to permit persons to whom the Software is furnished to do so,
+subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED 'AS IS', WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS
+FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR
+COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER
+IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
+CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+

README.md

@@ -11,7 +11,7 @@ WebSocket protocol extension as a plugin for
 $ gem install permessage_deflate
 ```
 
-## Usage
+## Usage
 
 Add the plugin to your extensions:
 
@@ -65,26 +65,3 @@ can be used to set the local session's behaviour and control that of the peer:
   if requested by the peer
 * `:request_max_window_bits`: an integer from `8` to `15` inclusive to ask the
   other peer to use to set its maximum sliding window size, if supported
-
-## License
-
-(The MIT License)
-
-Copyright (c) 2014-2016 James Coglan
-
-Permission is hereby granted, free of charge, to any person obtaining a copy of
-this software and associated documentation files (the 'Software'), to deal in
-the Software without restriction, including without limitation the rights to
-use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of
-the Software, and to permit persons to whom the Software is furnished to do so,
-subject to the following conditions:
-
-The above copyright notice and this permission notice shall be included in all
-copies or substantial portions of the Software.
-
-THE SOFTWARE IS PROVIDED 'AS IS', WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
-IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS
-FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR
-COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER
-IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
-CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.

lib/permessage_deflate/server_session.rb

@@ -19,21 +19,21 @@ class PermessageDeflate
     def generate_response
       response = {}
 
-      # https://tools.ietf.org/html/draft-ietf-hybi-permessage-compression#section-8.1.1.1
+      # https://tools.ietf.org/html/rfc7692#section-7.1.1.1
 
       @own_context_takeover = !@accept_no_context_takeover &&
                               !@params['server_no_context_takeover']
 
       response['server_no_context_takeover'] = true unless @own_context_takeover
 
-      # https://tools.ietf.org/html/draft-ietf-hybi-permessage-compression#section-8.1.1.2
+      # https://tools.ietf.org/html/rfc7692#section-7.1.1.2
 
       @peer_context_takeover = !@request_no_context_takeover &&
                                !@params['client_no_context_takeover']
 
       response['client_no_context_takeover'] = true unless @peer_context_takeover
 
-      # https://tools.ietf.org/html/draft-ietf-hybi-permessage-compression#section-8.1.2.1
+      # https://tools.ietf.org/html/rfc7692#section-7.1.2.1
 
       @own_window_bits = [ @accept_max_window_bits || MAX_WINDOW_BITS,
                            @params['server_max_window_bits'] || MAX_WINDOW_BITS
@@ -45,7 +45,7 @@ class PermessageDeflate
         response['server_max_window_bits'] = @own_window_bits
       end
 
-      # https://tools.ietf.org/html/draft-ietf-hybi-permessage-compression#section-8.1.2.2
+      # https://tools.ietf.org/html/rfc7692#section-7.1.2.2
 
       if client_max = @params['client_max_window_bits']
         client_max = MAX_WINDOW_BITS if client_max == true

lib/permessage_deflate/session.rb

@@ -8,6 +8,7 @@ class PermessageDeflate
       'client_max_window_bits'
     ]
 
+    MIN_WINDOW_BITS   = 9
     MAX_WINDOW_BITS   = 15
     VALID_WINDOW_BITS = [8, 9, 10, 11, 12, 13, 14, 15]
 
@@ -83,14 +84,20 @@ class PermessageDeflate
 
     def get_inflate
       return @inflate if @inflate
-      inflate = Zlib::Inflate.new(-@peer_window_bits)
+
+      window_bits = [@peer_window_bits, MIN_WINDOW_BITS].max
+      inflate     = Zlib::Inflate.new(-window_bits)
+
       @inflate = inflate if @peer_context_takeover
       inflate
     end
 
     def get_deflate
       return @deflate if @deflate
-      deflate = Zlib::Deflate.new(@level, -@own_window_bits, @mem_level, @strategy)
+
+      window_bits = [@own_window_bits, MIN_WINDOW_BITS].max
+      deflate     = Zlib::Deflate.new(@level, -window_bits, @mem_level, @strategy)
+
       @deflate = deflate if @own_context_takeover
       deflate
     end

permessage_deflate.gemspec

@@ -1,6 +1,6 @@
 Gem::Specification.new do |s|
   s.name              = 'permessage_deflate'
-  s.version           = '0.1.3'
+  s.version           = '0.1.4'
   s.summary           = 'Per-message DEFLATE compression extension for WebSocket connections'
   s.author            = 'James Coglan'
   s.email             = 'jcoglan@gmail.com'
@@ -11,7 +11,7 @@ Gem::Specification.new do |s|
   s.rdoc_options      = %w[--main README.md --markup markdown]
   s.require_paths     = %w[lib]
 
-  s.files = %w[README.md CHANGELOG.md] + Dir.glob('lib/**/*.rb')
+  s.files = %w[CHANGELOG.md LICENSE.md README.md] + Dir.glob('lib/**/*.rb')
 
   s.add_development_dependency 'rspec'
 end

spec/permessage_deflate/client_session_spec.rb

@@ -90,9 +90,9 @@ describe PermessageDeflate::ClientSession do
         expect(activate).to be true
       end
 
-      it "uses context takeover and 8 window bits for inflating incoming messages" do
+      it "uses context takeover and 9 window bits for inflating incoming messages" do
         activate
-        expect(Zlib::Inflate).to receive(:new).with(-8).exactly(1).and_return(inflate)
+        expect(Zlib::Inflate).to receive(:new).with(-9).exactly(1).and_return(inflate)
         process_incoming_message
         process_incoming_message
       end
@@ -113,9 +113,9 @@ describe PermessageDeflate::ClientSession do
         expect(activate).to be true
       end
 
-      it "uses context takeover and 8 window bits for deflating outgoing messages" do
+      it "uses context takeover and 9 window bits for deflating outgoing messages" do
         activate
-        expect(Zlib::Deflate).to receive(:new).with(level, -8, mem_level, strategy).exactly(1).and_return(deflate)
+        expect(Zlib::Deflate).to receive(:new).with(level, -9, mem_level, strategy).exactly(1).and_return(deflate)
         process_outgoing_message
         process_outgoing_message
       end
@@ -191,9 +191,9 @@ describe PermessageDeflate::ClientSession do
         expect(activate).to be true
       end
 
-      it "uses context takeover and 8 window bits for deflating outgoing messages" do
+      it "uses context takeover and 9 window bits for deflating outgoing messages" do
         activate
-        expect(Zlib::Deflate).to receive(:new).with(level, -8, mem_level, strategy).exactly(1).and_return(deflate)
+        expect(Zlib::Deflate).to receive(:new).with(level, -9, mem_level, strategy).exactly(1).and_return(deflate)
         process_outgoing_message
         process_outgoing_message
       end