Bump version to 0.1.2.

.travis.yml

@@ -1,10 +1,14 @@
+sudo: false
 language: ruby
 
 rvm:
   - 1.9.3
   - 2.0.0
-  - 2.1.3
+  - 2.1.7
+  - 2.2.3
   - jruby-19mode
-  - rbx-2.2
+  - jruby-9
+  - rbx-2.5
 
-script: bundle exec rspec -c spec/
+script:
+  - bundle exec rspec -c spec

CHANGELOG.md

@@ -1,3 +1,8 @@
+### 0.1.2 / 2015-11-06
+
+* The server does not send `server_max_window_bits` if the client does not ask
+  for it; this works around an issue in Firefox.
+
 ### 0.1.1 / 2014-12-18
 
 * Don't allow configure() to be called with unrecognized options

README.md

@@ -70,22 +70,21 @@ can be used to set the local session's behaviour and control that of the peer:
 
 (The MIT License)
 
-Copyright (c) 2014 James Coglan
+Copyright (c) 2014-2015 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:
+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.
+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/client_session.rb

@@ -59,12 +59,12 @@ class PermessageDeflate
 
       @own_context_takeover = !(@accept_no_context_takeover || params['client_no_context_takeover'])
       @own_window_bits = [
-        @accept_max_window_bits || DEFAULT_MAX_WINDOW_BITS,
-        params['client_max_window_bits'] || DEFAULT_MAX_WINDOW_BITS
+        @accept_max_window_bits || MAX_WINDOW_BITS,
+        params['client_max_window_bits'] || MAX_WINDOW_BITS
       ].min
 
       @peer_context_takeover = !params['server_no_context_takeover']
-      @peer_window_bits = params['server_max_window_bits'] || DEFAULT_MAX_WINDOW_BITS
+      @peer_window_bits = params['server_max_window_bits'] || MAX_WINDOW_BITS
 
       true
     end

lib/permessage_deflate/server_session.rb

@@ -17,42 +17,48 @@ class PermessageDeflate
     end
 
     def generate_response
-      params = {}
+      response = {}
 
       # https://tools.ietf.org/html/draft-ietf-hybi-permessage-compression#section-8.1.1.1
-      if @accept_no_context_takeover or @params['server_no_context_takeover']
-        params['server_no_context_takeover'] = true
-      end
+
+      @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
-      if @request_no_context_takeover or @params['client_no_context_takeover']
-        params['client_no_context_takeover'] = true
-      end
+
+      @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
-      if @accept_max_window_bits or @params['server_max_window_bits']
-        accept_max = @accept_max_window_bits || DEFAULT_MAX_WINDOW_BITS
-        server_max = @params['server_max_window_bits'] || DEFAULT_MAX_WINDOW_BITS
-        params['server_max_window_bits'] = [accept_max, server_max].min
+
+      @own_window_bits = [ @accept_max_window_bits || MAX_WINDOW_BITS,
+                           @params['server_max_window_bits'] || MAX_WINDOW_BITS
+                         ].min
+
+      # In violation of the spec, Firefox closes the connection if it does not
+      # send server_max_window_bits but the server includes this in its response
+      if @own_window_bits < MAX_WINDOW_BITS and @params['server_max_window_bits']
+        response['server_max_window_bits'] = @own_window_bits
       end
 
       # https://tools.ietf.org/html/draft-ietf-hybi-permessage-compression#section-8.1.2.2
+
       if client_max = @params['client_max_window_bits']
-        if client_max == true
-          params['client_max_window_bits'] = @request_max_window_bits if @request_max_window_bits
-        else
-          request_max = @request_max_window_bits || DEFAULT_MAX_WINDOW_BITS
-          params['client_max_window_bits'] = [request_max, client_max].min
-        end
+        client_max = MAX_WINDOW_BITS if client_max == true
+        @peer_window_bits = [@request_max_window_bits || MAX_WINDOW_BITS, client_max].min
+      else
+        @peer_window_bits = MAX_WINDOW_BITS
       end
 
-      @own_context_takeover = !params['server_no_context_takeover']
-      @own_window_bits = params['server_max_window_bits'] || DEFAULT_MAX_WINDOW_BITS
+      if @peer_window_bits < MAX_WINDOW_BITS
+        response['client_max_window_bits'] = @peer_window_bits
+      end
 
-      @peer_context_takeover = !params['client_no_context_takeover']
-      @peer_window_bits = params['client_max_window_bits'] || DEFAULT_MAX_WINDOW_BITS
-
-      params
+      response
     end
 
   end

lib/permessage_deflate/session.rb

@@ -8,7 +8,7 @@ class PermessageDeflate
       'client_max_window_bits'
     ]
 
-    DEFAULT_MAX_WINDOW_BITS = 15
+    MAX_WINDOW_BITS   = 15
     VALID_WINDOW_BITS = [8, 9, 10, 11, 12, 13, 14, 15]
 
     def self.valid_params?(params)

permessage_deflate.gemspec

@@ -1,6 +1,6 @@
 Gem::Specification.new do |s|
   s.name              = 'permessage_deflate'
-  s.version           = '0.1.1'
+  s.version           = '0.1.2'
   s.summary           = 'Per-message DEFLATE compression extension for WebSocket connections'
   s.author            = 'James Coglan'
   s.email             = 'jcoglan@gmail.com'

spec/permessage_deflate/server_session_spec.rb

@@ -163,8 +163,8 @@ describe PermessageDeflate::ServerSession do
     before { options[:max_window_bits] = 12 }
 
     describe "with an empty offer" do
-      it "includes server_max_window_bits in the response" do
-        expect(response).to eq("server_max_window_bits" => 12)
+      it "does not include server_max_window_bits in the response" do
+        expect(response).to eq({})
       end
 
       it "uses context takeover and 12 window bits for deflating outgoing messages" do