Update documentation for Cowboy 2.1

29 files changed, 99 insertions, 47 deletions

diff --git a/docs/en/cowboy/2.0/guide/constraints/index.html b/docs/en/cowboy/2.0/guide/constraints/index.html
index 570f49fe..d73b061d 100644
--- a/docs/en/cowboy/2.0/guide/constraints/index.html
+++ b/docs/en/cowboy/2.0/guide/constraints/index.html
@@ -7,7 +7,7 @@
     <meta name="description" content="">
     <meta name="author" content="Loïc Hoguin based on a design from (Soft10) Pol Cámara">
 
-    <meta name="generator" content="Hugo 0.26" />
+    <meta name="generator" content="Hugo 0.30.2" />
 
     <title>Nine Nines: Constraints</title>
 
@@ -258,6 +258,8 @@ functions. They should be written to not emit any exceptions.</p></div>
 	
 	
 	
+		<li><a href="/docs/en/cowboy/2.1/guide">2.1</a></li>
+	
 		<li><a href="/docs/en/cowboy/2.0/guide">2.0</a></li>
 	
 		<li><a href="/docs/en/cowboy/1.0/guide">1.0</a></li>
diff --git a/docs/en/cowboy/2.0/guide/cookies/index.html b/docs/en/cowboy/2.0/guide/cookies/index.html
index fe40ca87..5d56bfaf 100644
--- a/docs/en/cowboy/2.0/guide/cookies/index.html
+++ b/docs/en/cowboy/2.0/guide/cookies/index.html
@@ -7,7 +7,7 @@
     <meta name="description" content="">
     <meta name="author" content="Loïc Hoguin based on a design from (Soft10) Pol Cámara">
 
-    <meta name="generator" content="Hugo 0.26" />
+    <meta name="generator" content="Hugo 0.30.2" />
 
     <title>Nine Nines: Using cookies</title>
 
@@ -261,6 +261,8 @@ exception is thrown.</p></div>
 	
 	
 	
+		<li><a href="/docs/en/cowboy/2.1/guide">2.1</a></li>
+	
 		<li><a href="/docs/en/cowboy/2.0/guide">2.0</a></li>
 	
 		<li><a href="/docs/en/cowboy/1.0/guide">1.0</a></li>
diff --git a/docs/en/cowboy/2.0/guide/erlang_web/index.html b/docs/en/cowboy/2.0/guide/erlang_web/index.html
index 33ceb1e6..f8e72f14 100644
--- a/docs/en/cowboy/2.0/guide/erlang_web/index.html
+++ b/docs/en/cowboy/2.0/guide/erlang_web/index.html
@@ -7,7 +7,7 @@
     <meta name="description" content="">
     <meta name="author" content="Loïc Hoguin based on a design from (Soft10) Pol Cámara">
 
-    <meta name="generator" content="Hugo 0.26" />
+    <meta name="generator" content="Hugo 0.30.2" />
 
     <title>Nine Nines: Erlang and the Web</title>
 
@@ -311,6 +311,8 @@ ebook version.</p></div>
 	
 	
 	
+		<li><a href="/docs/en/cowboy/2.1/guide">2.1</a></li>
+	
 		<li><a href="/docs/en/cowboy/2.0/guide">2.0</a></li>
 	
 		<li><a href="/docs/en/cowboy/1.0/guide">1.0</a></li>
diff --git a/docs/en/cowboy/2.0/guide/flow_diagram/index.html b/docs/en/cowboy/2.0/guide/flow_diagram/index.html
index 679ee0b1..abdec8b9 100644
--- a/docs/en/cowboy/2.0/guide/flow_diagram/index.html
+++ b/docs/en/cowboy/2.0/guide/flow_diagram/index.html
@@ -7,7 +7,7 @@
     <meta name="description" content="">
     <meta name="author" content="Loïc Hoguin based on a design from (Soft10) Pol Cámara">
 
-    <meta name="generator" content="Hugo 0.26" />
+    <meta name="generator" content="Hugo 0.30.2" />
 
     <title>Nine Nines: Flow diagram</title>
 
@@ -230,6 +230,8 @@ be the cause.</p></div>
 	
 	
 	
+		<li><a href="/docs/en/cowboy/2.1/guide">2.1</a></li>
+	
 		<li><a href="/docs/en/cowboy/2.0/guide">2.0</a></li>
 	
 		<li><a href="/docs/en/cowboy/1.0/guide">1.0</a></li>
diff --git a/docs/en/cowboy/2.0/guide/getting_started/index.html b/docs/en/cowboy/2.0/guide/getting_started/index.html
index 9ec1da90..8e80530b 100644
--- a/docs/en/cowboy/2.0/guide/getting_started/index.html
+++ b/docs/en/cowboy/2.0/guide/getting_started/index.html
@@ -7,7 +7,7 @@
     <meta name="description" content="">
     <meta name="author" content="Loïc Hoguin based on a design from (Soft10) Pol Cámara">
 
-    <meta name="generator" content="Hugo 0.26" />
+    <meta name="generator" content="Hugo 0.30.2" />
 
     <title>Nine Nines: Getting started</title>
 
@@ -278,6 +278,8 @@ in your browser, you should get a nice <code>Hello Erlang!</code> displayed!</p>
 	
 	
 	
+		<li><a href="/docs/en/cowboy/2.1/guide">2.1</a></li>
+	
 		<li><a href="/docs/en/cowboy/2.0/guide">2.0</a></li>
 	
 		<li><a href="/docs/en/cowboy/1.0/guide">1.0</a></li>
diff --git a/docs/en/cowboy/2.0/guide/handlers/index.html b/docs/en/cowboy/2.0/guide/handlers/index.html
index 33cd53e2..f1fa61d0 100644
--- a/docs/en/cowboy/2.0/guide/handlers/index.html
+++ b/docs/en/cowboy/2.0/guide/handlers/index.html
@@ -7,7 +7,7 @@
     <meta name="description" content="">
     <meta name="author" content="Loïc Hoguin based on a design from (Soft10) Pol Cámara">
 
-    <meta name="generator" content="Hugo 0.26" />
+    <meta name="generator" content="Hugo 0.30.2" />
 
     <title>Nine Nines: Handlers</title>
 
@@ -208,6 +208,8 @@ process will terminate soon after this call returns.</p></div>
 	
 	
 	
+		<li><a href="/docs/en/cowboy/2.1/guide">2.1</a></li>
+	
 		<li><a href="/docs/en/cowboy/2.0/guide">2.0</a></li>
 	
 		<li><a href="/docs/en/cowboy/1.0/guide">1.0</a></li>
diff --git a/docs/en/cowboy/2.0/guide/index.html b/docs/en/cowboy/2.0/guide/index.html
index 533d8db1..e908b5b0 100644
--- a/docs/en/cowboy/2.0/guide/index.html
+++ b/docs/en/cowboy/2.0/guide/index.html
@@ -7,7 +7,7 @@
     <meta name="description" content="">
     <meta name="author" content="Loïc Hoguin based on a design from (Soft10) Pol Cámara">
 
-    <meta name="generator" content="Hugo 0.26" />
+    <meta name="generator" content="Hugo 0.30.2" />
 
     <title>Nine Nines: Cowboy User Guide</title>
 
@@ -294,6 +294,8 @@
 	
 	
 	
+		<li><a href="/docs/en/cowboy/2.1/guide">2.1</a></li>
+	
 		<li><a href="/docs/en/cowboy/2.0/guide">2.0</a></li>
 	
 		<li><a href="/docs/en/cowboy/1.0/guide">1.0</a></li>
diff --git a/docs/en/cowboy/2.0/guide/introduction/index.html b/docs/en/cowboy/2.0/guide/introduction/index.html
index 63b07c4e..f1402b5a 100644
--- a/docs/en/cowboy/2.0/guide/introduction/index.html
+++ b/docs/en/cowboy/2.0/guide/introduction/index.html
@@ -7,7 +7,7 @@
     <meta name="description" content="">
     <meta name="author" content="Loïc Hoguin based on a design from (Soft10) Pol Cámara">
 
-    <meta name="generator" content="Hugo 0.26" />
+    <meta name="generator" content="Hugo 0.30.2" />
 
     <title>Nine Nines: Introduction</title>
 
@@ -196,6 +196,8 @@ when sending responses.</p></div>
 	
 	
 	
+		<li><a href="/docs/en/cowboy/2.1/guide">2.1</a></li>
+	
 		<li><a href="/docs/en/cowboy/2.0/guide">2.0</a></li>
 	
 		<li><a href="/docs/en/cowboy/1.0/guide">1.0</a></li>
diff --git a/docs/en/cowboy/2.0/guide/listeners/index.html b/docs/en/cowboy/2.0/guide/listeners/index.html
index ee7a86f9..c8efbf0d 100644
--- a/docs/en/cowboy/2.0/guide/listeners/index.html
+++ b/docs/en/cowboy/2.0/guide/listeners/index.html
@@ -7,7 +7,7 @@
     <meta name="description" content="">
     <meta name="author" content="Loïc Hoguin based on a design from (Soft10) Pol Cámara">
 
-    <meta name="generator" content="Hugo 0.26" />
+    <meta name="generator" content="Hugo 0.30.2" />
 
     <title>Nine Nines: Listeners</title>
 
@@ -226,6 +226,8 @@ shared.</p></div>
 	
 	
 	
+		<li><a href="/docs/en/cowboy/2.1/guide">2.1</a></li>
+	
 		<li><a href="/docs/en/cowboy/2.0/guide">2.0</a></li>
 	
 		<li><a href="/docs/en/cowboy/1.0/guide">1.0</a></li>
diff --git a/docs/en/cowboy/2.0/guide/loop_handlers/index.html b/docs/en/cowboy/2.0/guide/loop_handlers/index.html
index 0b0b50b5..ce390b41 100644
--- a/docs/en/cowboy/2.0/guide/loop_handlers/index.html
+++ b/docs/en/cowboy/2.0/guide/loop_handlers/index.html
@@ -7,7 +7,7 @@
     <meta name="description" content="">
     <meta name="author" content="Loïc Hoguin based on a design from (Soft10) Pol Cámara">
 
-    <meta name="generator" content="Hugo 0.26" />
+    <meta name="generator" content="Hugo 0.30.2" />
 
     <title>Nine Nines: Loop handlers</title>
 
@@ -248,6 +248,8 @@ accordingly.</p></div>
 	
 	
 	
+		<li><a href="/docs/en/cowboy/2.1/guide">2.1</a></li>
+	
 		<li><a href="/docs/en/cowboy/2.0/guide">2.0</a></li>
 	
 		<li><a href="/docs/en/cowboy/1.0/guide">1.0</a></li>
diff --git a/docs/en/cowboy/2.0/guide/middlewares/index.html b/docs/en/cowboy/2.0/guide/middlewares/index.html
index 5569e6f5..fc4f822b 100644
--- a/docs/en/cowboy/2.0/guide/middlewares/index.html
+++ b/docs/en/cowboy/2.0/guide/middlewares/index.html
@@ -7,7 +7,7 @@
     <meta name="description" content="">
     <meta name="author" content="Loïc Hoguin based on a design from (Soft10) Pol Cámara">
 
-    <meta name="generator" content="Hugo 0.26" />
+    <meta name="generator" content="Hugo 0.30.2" />
 
     <title>Nine Nines: Middlewares</title>
 
@@ -209,6 +209,8 @@ values. It puts the result of the request handling into <code>result</code>.</p>
 	
 	
 	
+		<li><a href="/docs/en/cowboy/2.1/guide">2.1</a></li>
+	
 		<li><a href="/docs/en/cowboy/2.0/guide">2.0</a></li>
 	
 		<li><a href="/docs/en/cowboy/1.0/guide">1.0</a></li>
diff --git a/docs/en/cowboy/2.0/guide/migrating_from_1.0/index.html b/docs/en/cowboy/2.0/guide/migrating_from_1.0/index.html
index f7f9492b..f66b424e 100644
--- a/docs/en/cowboy/2.0/guide/migrating_from_1.0/index.html
+++ b/docs/en/cowboy/2.0/guide/migrating_from_1.0/index.html
@@ -7,7 +7,7 @@
     <meta name="description" content="">
     <meta name="author" content="Loïc Hoguin based on a design from (Soft10) Pol Cámara">
 
-    <meta name="generator" content="Hugo 0.26" />
+    <meta name="generator" content="Hugo 0.30.2" />
 
     <title>Nine Nines: Migrating from Cowboy 1.0 to 2.0</title>
 
@@ -495,6 +495,8 @@ The static file handler has been improved to handle more special
 	
 	
 	
+		<li><a href="/docs/en/cowboy/2.1/guide">2.1</a></li>
+	
 		<li><a href="/docs/en/cowboy/2.0/guide">2.0</a></li>
 	
 		<li><a href="/docs/en/cowboy/1.0/guide">1.0</a></li>
diff --git a/docs/en/cowboy/2.0/guide/modern_web/index.html b/docs/en/cowboy/2.0/guide/modern_web/index.html
index 2bbf1072..ec2d3a7e 100644
--- a/docs/en/cowboy/2.0/guide/modern_web/index.html
+++ b/docs/en/cowboy/2.0/guide/modern_web/index.html
@@ -7,7 +7,7 @@
     <meta name="description" content="">
     <meta name="author" content="Loïc Hoguin based on a design from (Soft10) Pol Cámara">
 
-    <meta name="generator" content="Hugo 0.26" />
+    <meta name="generator" content="Hugo 0.30.2" />
 
     <title>Nine Nines: The modern Web</title>
 
@@ -228,6 +228,8 @@ the HTTP protocol.</p></div>
 	
 	
 	
+		<li><a href="/docs/en/cowboy/2.1/guide">2.1</a></li>
+	
 		<li><a href="/docs/en/cowboy/2.0/guide">2.0</a></li>
 	
 		<li><a href="/docs/en/cowboy/1.0/guide">1.0</a></li>
diff --git a/docs/en/cowboy/2.0/guide/multipart/index.html b/docs/en/cowboy/2.0/guide/multipart/index.html
index 4f173126..7f6cc95b 100644
--- a/docs/en/cowboy/2.0/guide/multipart/index.html
+++ b/docs/en/cowboy/2.0/guide/multipart/index.html
@@ -7,7 +7,7 @@
     <meta name="description" content="">
     <meta name="author" content="Loïc Hoguin based on a design from (Soft10) Pol Cámara">
 
-    <meta name="generator" content="Hugo 0.26" />
+    <meta name="generator" content="Hugo 0.30.2" />
 
     <title>Nine Nines: Multipart requests</title>
 
@@ -286,6 +286,8 @@ reading as soon as you find the data you need.</p></div>
 	
 	
 	
+		<li><a href="/docs/en/cowboy/2.1/guide">2.1</a></li>
+	
 		<li><a href="/docs/en/cowboy/2.0/guide">2.0</a></li>
 	
 		<li><a href="/docs/en/cowboy/1.0/guide">1.0</a></li>
diff --git a/docs/en/cowboy/2.0/guide/req/index.html b/docs/en/cowboy/2.0/guide/req/index.html
index bdf6b6b9..b9198024 100644
--- a/docs/en/cowboy/2.0/guide/req/index.html
+++ b/docs/en/cowboy/2.0/guide/req/index.html
@@ -7,7 +7,7 @@
     <meta name="description" content="">
     <meta name="author" content="Loïc Hoguin based on a design from (Soft10) Pol Cámara">
 
-    <meta name="generator" content="Hugo 0.26" />
+    <meta name="generator" content="Hugo 0.30.2" />
 
     <title>Nine Nines: The Req object</title>
 
@@ -524,6 +524,8 @@ client itself. It may also be a proxy or a gateway.</p></div>
 	
 	
 	
+		<li><a href="/docs/en/cowboy/2.1/guide">2.1</a></li>
+	
 		<li><a href="/docs/en/cowboy/2.0/guide">2.0</a></li>
 	
 		<li><a href="/docs/en/cowboy/1.0/guide">1.0</a></li>
diff --git a/docs/en/cowboy/2.0/guide/req_body/index.html b/docs/en/cowboy/2.0/guide/req_body/index.html
index 4fce0fd5..53d396e2 100644
--- a/docs/en/cowboy/2.0/guide/req_body/index.html
+++ b/docs/en/cowboy/2.0/guide/req_body/index.html
@@ -7,7 +7,7 @@
     <meta name="description" content="">
     <meta name="author" content="Loïc Hoguin based on a design from (Soft10) Pol Cámara">
 
-    <meta name="generator" content="Hugo 0.26" />
+    <meta name="generator" content="Hugo 0.30.2" />
 
     <title>Nine Nines: Reading the request body</title>
 
@@ -261,6 +261,8 @@ http://www.gnu.org/software/src-highlite -->
 	
 	
 	
+		<li><a href="/docs/en/cowboy/2.1/guide">2.1</a></li>
+	
 		<li><a href="/docs/en/cowboy/2.0/guide">2.0</a></li>
 	
 		<li><a href="/docs/en/cowboy/1.0/guide">1.0</a></li>
diff --git a/docs/en/cowboy/2.0/guide/resource_design.asciidoc b/docs/en/cowboy/2.0/guide/resource_design.asciidoc
index fa0c6122..2325b9f2 100644
--- a/docs/en/cowboy/2.0/guide/resource_design.asciidoc
+++ b/docs/en/cowboy/2.0/guide/resource_design.asciidoc
@@ -193,8 +193,8 @@ callback.
 
 If you implement the methods PUT, POST and/or PATCH,
 you must implement the `content_types_accepted` callback,
-and one `AcceptCallback` callback for each content-type
-it returns. Prefix the `AcceptCallback` callback names
+and one `AcceptResource` callback for each content-type
+it returns. Prefix the `AcceptResource` callback names
 with `from_` for clarity. For example, `from_html` or
 `from_json`.
 
diff --git a/docs/en/cowboy/2.0/guide/resource_design/index.html b/docs/en/cowboy/2.0/guide/resource_design/index.html
index c2331de4..688a5f04 100644
--- a/docs/en/cowboy/2.0/guide/resource_design/index.html
+++ b/docs/en/cowboy/2.0/guide/resource_design/index.html
@@ -7,7 +7,7 @@
     <meta name="description" content="">
     <meta name="author" content="Loïc Hoguin based on a design from (Soft10) Pol Cámara">
 
-    <meta name="generator" content="Hugo 0.26" />
+    <meta name="generator" content="Hugo 0.30.2" />
 
     <title>Nine Nines: Designing a resource handler</title>
 
@@ -248,8 +248,8 @@ callback.</p></div>
 <div class="sectionbody">
 <div class="paragraph"><p>If you implement the methods PUT, POST and/or PATCH,
 you must implement the <code>content_types_accepted</code> callback,
-and one <code>AcceptCallback</code> callback for each content-type
-it returns. Prefix the <code>AcceptCallback</code> callback names
+and one <code>AcceptResource</code> callback for each content-type
+it returns. Prefix the <code>AcceptResource</code> callback names
 with <code>from_</code> for clarity. For example, <code>from_html</code> or
 <code>from_json</code>.</p></div>
 <div class="paragraph"><p>Do we want to allow the POST method to create individual
@@ -330,6 +330,8 @@ no way of knowing it has been completed yet, implement the
 	
 	
 	
+		<li><a href="/docs/en/cowboy/2.1/guide">2.1</a></li>
+	
 		<li><a href="/docs/en/cowboy/2.0/guide">2.0</a></li>
 	
 		<li><a href="/docs/en/cowboy/1.0/guide">1.0</a></li>
diff --git a/docs/en/cowboy/2.0/guide/resp/index.html b/docs/en/cowboy/2.0/guide/resp/index.html
index 6ecdd801..ef32be65 100644
--- a/docs/en/cowboy/2.0/guide/resp/index.html
+++ b/docs/en/cowboy/2.0/guide/resp/index.html
@@ -7,7 +7,7 @@
     <meta name="description" content="">
     <meta name="author" content="Loïc Hoguin based on a design from (Soft10) Pol Cámara">
 
-    <meta name="generator" content="Hugo 0.26" />
+    <meta name="generator" content="Hugo 0.30.2" />
 
     <title>Nine Nines: Sending a response</title>
 
@@ -439,6 +439,8 @@ ultimately send a response to the client.</p></div>
 	
 	
 	
+		<li><a href="/docs/en/cowboy/2.1/guide">2.1</a></li>
+	
 		<li><a href="/docs/en/cowboy/2.0/guide">2.0</a></li>
 	
 		<li><a href="/docs/en/cowboy/1.0/guide">1.0</a></li>
diff --git a/docs/en/cowboy/2.0/guide/rest_flowcharts/index.html b/docs/en/cowboy/2.0/guide/rest_flowcharts/index.html
index 88241cbf..fa510cf4 100644
--- a/docs/en/cowboy/2.0/guide/rest_flowcharts/index.html
+++ b/docs/en/cowboy/2.0/guide/rest_flowcharts/index.html
@@ -7,7 +7,7 @@
     <meta name="description" content="">
     <meta name="author" content="Loïc Hoguin based on a design from (Soft10) Pol Cámara">
 
-    <meta name="generator" content="Hugo 0.26" />
+    <meta name="generator" content="Hugo 0.30.2" />
 
     <title>Nine Nines: REST flowcharts</title>
 
@@ -361,6 +361,8 @@ the results for subsequent use.</p></div>
 	
 	
 	
+		<li><a href="/docs/en/cowboy/2.1/guide">2.1</a></li>
+	
 		<li><a href="/docs/en/cowboy/2.0/guide">2.0</a></li>
 	
 		<li><a href="/docs/en/cowboy/1.0/guide">1.0</a></li>
diff --git a/docs/en/cowboy/2.0/guide/rest_handlers/index.html b/docs/en/cowboy/2.0/guide/rest_handlers/index.html
index 93a311d0..aa0be7ff 100644
--- a/docs/en/cowboy/2.0/guide/rest_handlers/index.html
+++ b/docs/en/cowboy/2.0/guide/rest_handlers/index.html
@@ -7,7 +7,7 @@
     <meta name="description" content="">
     <meta name="author" content="Loïc Hoguin based on a design from (Soft10) Pol Cámara">
 
-    <meta name="generator" content="Hugo 0.26" />
+    <meta name="generator" content="Hugo 0.30.2" />
 
     <title>Nine Nines: REST handlers</title>
 
@@ -400,6 +400,8 @@ cellspacing="0" cellpadding="4">
 	
 	
 	
+		<li><a href="/docs/en/cowboy/2.1/guide">2.1</a></li>
+	
 		<li><a href="/docs/en/cowboy/2.0/guide">2.0</a></li>
 	
 		<li><a href="/docs/en/cowboy/1.0/guide">1.0</a></li>
diff --git a/docs/en/cowboy/2.0/guide/rest_principles/index.html b/docs/en/cowboy/2.0/guide/rest_principles/index.html
index c221d123..c26bf839 100644
--- a/docs/en/cowboy/2.0/guide/rest_principles/index.html
+++ b/docs/en/cowboy/2.0/guide/rest_principles/index.html
@@ -7,7 +7,7 @@
     <meta name="description" content="">
     <meta name="author" content="Loïc Hoguin based on a design from (Soft10) Pol Cámara">
 
-    <meta name="generator" content="Hugo 0.26" />
+    <meta name="generator" content="Hugo 0.30.2" />
 
     <title>Nine Nines: REST principles</title>
 
@@ -270,6 +270,8 @@ anything specific to the service to operate on it.</p></div>
 	
 	
 	
+		<li><a href="/docs/en/cowboy/2.1/guide">2.1</a></li>
+	
 		<li><a href="/docs/en/cowboy/2.0/guide">2.0</a></li>
 	
 		<li><a href="/docs/en/cowboy/1.0/guide">1.0</a></li>
diff --git a/docs/en/cowboy/2.0/guide/routing/index.html b/docs/en/cowboy/2.0/guide/routing/index.html
index 24f5ca46..891daf94 100644
--- a/docs/en/cowboy/2.0/guide/routing/index.html
+++ b/docs/en/cowboy/2.0/guide/routing/index.html
@@ -7,7 +7,7 @@
     <meta name="description" content="">
     <meta name="author" content="Loïc Hoguin based on a design from (Soft10) Pol Cámara">
 
-    <meta name="generator" content="Hugo 0.26" />
+    <meta name="generator" content="Hugo 0.30.2" />
 
     <title>Nine Nines: Routing</title>
 
@@ -378,6 +378,8 @@ http://www.gnu.org/software/src-highlite -->
 	
 	
 	
+		<li><a href="/docs/en/cowboy/2.1/guide">2.1</a></li>
+	
 		<li><a href="/docs/en/cowboy/2.0/guide">2.0</a></li>
 	
 		<li><a href="/docs/en/cowboy/1.0/guide">1.0</a></li>
diff --git a/docs/en/cowboy/2.0/guide/specs/index.html b/docs/en/cowboy/2.0/guide/specs/index.html
index b0511164..bd6f8456 100644
--- a/docs/en/cowboy/2.0/guide/specs/index.html
+++ b/docs/en/cowboy/2.0/guide/specs/index.html
@@ -7,7 +7,7 @@
     <meta name="description" content="">
     <meta name="author" content="Loïc Hoguin based on a design from (Soft10) Pol Cámara">
 
-    <meta name="generator" content="Hugo 0.26" />
+    <meta name="generator" content="Hugo 0.30.2" />
 
     <title>Nine Nines: HTTP and other specifications</title>
 
@@ -952,6 +952,8 @@ for or related to HTTP.</p></div>
 	
 	
 	
+		<li><a href="/docs/en/cowboy/2.1/guide">2.1</a></li>
+	
 		<li><a href="/docs/en/cowboy/2.0/guide">2.0</a></li>
 	
 		<li><a href="/docs/en/cowboy/1.0/guide">1.0</a></li>
diff --git a/docs/en/cowboy/2.0/guide/static_files/index.html b/docs/en/cowboy/2.0/guide/static_files/index.html
index f7a5c7f9..2d2e53c8 100644
--- a/docs/en/cowboy/2.0/guide/static_files/index.html
+++ b/docs/en/cowboy/2.0/guide/static_files/index.html
@@ -7,7 +7,7 @@
     <meta name="description" content="">
     <meta name="author" content="Loïc Hoguin based on a design from (Soft10) Pol Cámara">
 
-    <meta name="generator" content="Hugo 0.26" />
+    <meta name="generator" content="Hugo 0.30.2" />
 
     <title>Nine Nines: Static files</title>
 
@@ -290,6 +290,8 @@ http://www.gnu.org/software/src-highlite -->
 	
 	
 	
+		<li><a href="/docs/en/cowboy/2.1/guide">2.1</a></li>
+	
 		<li><a href="/docs/en/cowboy/2.0/guide">2.0</a></li>
 	
 		<li><a href="/docs/en/cowboy/1.0/guide">1.0</a></li>
diff --git a/docs/en/cowboy/2.0/guide/streams/index.html b/docs/en/cowboy/2.0/guide/streams/index.html
index e7c82dd1..22100f9c 100644
--- a/docs/en/cowboy/2.0/guide/streams/index.html
+++ b/docs/en/cowboy/2.0/guide/streams/index.html
@@ -7,7 +7,7 @@
     <meta name="description" content="">
     <meta name="author" content="Loïc Hoguin based on a design from (Soft10) Pol Cámara">
 
-    <meta name="generator" content="Hugo 0.26" />
+    <meta name="generator" content="Hugo 0.30.2" />
 
     <title>Nine Nines: Streams</title>
 
@@ -178,6 +178,8 @@ that will modify responses.</p></div>
 	
 	
 	
+		<li><a href="/docs/en/cowboy/2.1/guide">2.1</a></li>
+	
 		<li><a href="/docs/en/cowboy/2.0/guide">2.0</a></li>
 	
 		<li><a href="/docs/en/cowboy/1.0/guide">1.0</a></li>
diff --git a/docs/en/cowboy/2.0/guide/ws_handlers.asciidoc b/docs/en/cowboy/2.0/guide/ws_handlers.asciidoc
index a79d7e29..84dfb9bc 100644
--- a/docs/en/cowboy/2.0/guide/ws_handlers.asciidoc
+++ b/docs/en/cowboy/2.0/guide/ws_handlers.asciidoc
@@ -57,19 +57,18 @@ be:
 
 [source,erlang]
 ----
-init(Req0, State) ->
-    case cowboy_req:parse_header(<<"sec-websocket-protocol">>, Req0) of
+init(Req, State) ->
+    case cowboy_req:parse_header(<<"sec-websocket-protocol">>, Req) of
         undefined ->
-            {cowboy_websocket, Req0, State};
+            {cowboy_websocket, Req, State};
         Subprotocols ->
             case lists:keymember(<<"mqtt">>, 1, Subprotocols) of
                 true ->
-                    Req = cowboy_req:set_resp_header(<<"sec-websocket-protocol">>,
-                        <<"mqtt">>, Req0),
-                    {cowboy_websocket, Req, State};
+                    Req2 = cowboy_req:set_resp_header(<<"sec-websocket-protocol">>,
+                        <<"mqtt">>, Req),
+                    {cowboy_websocket, Req2, State};
                 false ->
-                    Req = cowboy_req:reply(400, Req0),
-                    {ok, Req, State}
+                    {stop, Req, State}
             end
     end.
 ----
diff --git a/docs/en/cowboy/2.0/guide/ws_handlers/index.html b/docs/en/cowboy/2.0/guide/ws_handlers/index.html
index f17b1093..8e867c6f 100644
--- a/docs/en/cowboy/2.0/guide/ws_handlers/index.html
+++ b/docs/en/cowboy/2.0/guide/ws_handlers/index.html
@@ -7,7 +7,7 @@
     <meta name="description" content="">
     <meta name="author" content="Loïc Hoguin based on a design from (Soft10) Pol Cámara">
 
-    <meta name="generator" content="Hugo 0.26" />
+    <meta name="generator" content="Hugo 0.30.2" />
 
     <title>Nine Nines: Websocket handlers</title>
 
@@ -122,19 +122,18 @@ be:</p></div>
 by Lorenzo Bettini
 http://www.lorenzobettini.it
 http://www.gnu.org/software/src-highlite -->
-<pre><tt><span style="font-weight: bold"><span style="color: #000000">init</span></span>(<span style="color: #009900">Req0</span>, <span style="color: #009900">State</span>) <span style="color: #990000">-&gt;</span>
-    <span style="font-weight: bold"><span style="color: #0000FF">case</span></span> <span style="font-weight: bold"><span style="color: #000000">cowboy_req:parse_header</span></span>(<span style="color: #990000">&lt;&lt;</span><span style="color: #FF0000">"sec-websocket-protocol"</span><span style="color: #990000">&gt;&gt;</span>, <span style="color: #009900">Req0</span>) <span style="font-weight: bold"><span style="color: #0000FF">of</span></span>
+<pre><tt><span style="font-weight: bold"><span style="color: #000000">init</span></span>(<span style="color: #009900">Req</span>, <span style="color: #009900">State</span>) <span style="color: #990000">-&gt;</span>
+    <span style="font-weight: bold"><span style="color: #0000FF">case</span></span> <span style="font-weight: bold"><span style="color: #000000">cowboy_req:parse_header</span></span>(<span style="color: #990000">&lt;&lt;</span><span style="color: #FF0000">"sec-websocket-protocol"</span><span style="color: #990000">&gt;&gt;</span>, <span style="color: #009900">Req</span>) <span style="font-weight: bold"><span style="color: #0000FF">of</span></span>
         <span style="color: #000080">undefined</span> <span style="color: #990000">-&gt;</span>
-            {<span style="color: #FF6600">cowboy_websocket</span>, <span style="color: #009900">Req0</span>, <span style="color: #009900">State</span>};
+            {<span style="color: #FF6600">cowboy_websocket</span>, <span style="color: #009900">Req</span>, <span style="color: #009900">State</span>};
         <span style="color: #009900">Subprotocols</span> <span style="color: #990000">-&gt;</span>
             <span style="font-weight: bold"><span style="color: #0000FF">case</span></span> <span style="font-weight: bold"><span style="color: #000000">lists:keymember</span></span>(<span style="color: #990000">&lt;&lt;</span><span style="color: #FF0000">"mqtt"</span><span style="color: #990000">&gt;&gt;</span>, <span style="color: #993399">1</span>, <span style="color: #009900">Subprotocols</span>) <span style="font-weight: bold"><span style="color: #0000FF">of</span></span>
                 <span style="color: #000080">true</span> <span style="color: #990000">-&gt;</span>
-                    <span style="color: #009900">Req</span> <span style="color: #990000">=</span> <span style="font-weight: bold"><span style="color: #000000">cowboy_req:set_resp_header</span></span>(<span style="color: #990000">&lt;&lt;</span><span style="color: #FF0000">"sec-websocket-protocol"</span><span style="color: #990000">&gt;&gt;</span>,
-                        <span style="color: #990000">&lt;&lt;</span><span style="color: #FF0000">"mqtt"</span><span style="color: #990000">&gt;&gt;</span>, <span style="color: #009900">Req0</span>),
-                    {<span style="color: #FF6600">cowboy_websocket</span>, <span style="color: #009900">Req</span>, <span style="color: #009900">State</span>};
+                    <span style="color: #009900">Req2</span> <span style="color: #990000">=</span> <span style="font-weight: bold"><span style="color: #000000">cowboy_req:set_resp_header</span></span>(<span style="color: #990000">&lt;&lt;</span><span style="color: #FF0000">"sec-websocket-protocol"</span><span style="color: #990000">&gt;&gt;</span>,
+                        <span style="color: #990000">&lt;&lt;</span><span style="color: #FF0000">"mqtt"</span><span style="color: #990000">&gt;&gt;</span>, <span style="color: #009900">Req</span>),
+                    {<span style="color: #FF6600">cowboy_websocket</span>, <span style="color: #009900">Req2</span>, <span style="color: #009900">State</span>};
                 <span style="color: #000080">false</span> <span style="color: #990000">-&gt;</span>
-                    <span style="color: #009900">Req</span> <span style="color: #990000">=</span> <span style="font-weight: bold"><span style="color: #000000">cowboy_req:reply</span></span>(<span style="color: #993399">400</span>, <span style="color: #009900">Req0</span>),
-                    {<span style="color: #FF6600">ok</span>, <span style="color: #009900">Req</span>, <span style="color: #009900">State</span>}
+                    {<span style="color: #FF6600">stop</span>, <span style="color: #009900">Req</span>, <span style="color: #009900">State</span>}
             <span style="font-weight: bold"><span style="color: #0000FF">end</span></span>
     <span style="font-weight: bold"><span style="color: #0000FF">end</span></span><span style="color: #990000">.</span></tt></pre></div></div>
 </div>
@@ -388,6 +387,8 @@ close frame will not be sent.</p></div>
 	
 	
 	
+		<li><a href="/docs/en/cowboy/2.1/guide">2.1</a></li>
+	
 		<li><a href="/docs/en/cowboy/2.0/guide">2.0</a></li>
 	
 		<li><a href="/docs/en/cowboy/1.0/guide">1.0</a></li>
diff --git a/docs/en/cowboy/2.0/guide/ws_protocol/index.html b/docs/en/cowboy/2.0/guide/ws_protocol/index.html
index d70fe10d..3b1b1cf4 100644
--- a/docs/en/cowboy/2.0/guide/ws_protocol/index.html
+++ b/docs/en/cowboy/2.0/guide/ws_protocol/index.html
@@ -7,7 +7,7 @@
     <meta name="description" content="">
     <meta name="author" content="Loïc Hoguin based on a design from (Soft10) Pol Cámara">
 
-    <meta name="generator" content="Hugo 0.26" />
+    <meta name="generator" content="Hugo 0.30.2" />
 
     <title>Nine Nines: The Websocket protocol</title>
 
@@ -187,6 +187,8 @@ extensions.</p></div>
 	
 	
 	
+		<li><a href="/docs/en/cowboy/2.1/guide">2.1</a></li>
+	
 		<li><a href="/docs/en/cowboy/2.0/guide">2.0</a></li>
 	
 		<li><a href="/docs/en/cowboy/1.0/guide">1.0</a></li>