From edd162cf3bfcb1dcc21ed19289441a538317e8dc Mon Sep 17 00:00:00 2001
From: Ivan Vilata-i-Balaguer <ivan@selidor.net>
Date: Fri, 9 Mar 2018 14:19:30 +0100
Subject: [PATCH] Add Access-Control-Expose-Headers field constant:

This response header is described both in [CORS](https://www.w3.org/TR/cors/)
and [Fetch](https://fetch.spec.whatwg.org/) specifications.
---
 doc/qbk/09_releases.qbk                 | 2 ++
 include/boost/beast/http/field.hpp      | 1 +
 include/boost/beast/http/impl/field.ipp | 3 ++-
 test/beast/http/field.cpp               | 1 +
 tools/field.txt                         | 1 +
 5 files changed, 7 insertions(+), 1 deletion(-)

diff --git a/doc/qbk/09_releases.qbk b/doc/qbk/09_releases.qbk
index 05341101..81585145 100644
--- a/doc/qbk/09_releases.qbk
+++ b/doc/qbk/09_releases.qbk
@@ -118,6 +118,8 @@ to update to the latest Boost release.
 
 * ([issue 1012]) Add asio_handler_invoke overloads for stream algorithms
 
+* Add Access-Control-Expose-Headers field constant
+
 [*API Changes]
 
 * Remove unintended public members of
diff --git a/include/boost/beast/http/field.hpp b/include/boost/beast/http/field.hpp
index 3d1446ad..09d9dfff 100644
--- a/include/boost/beast/http/field.hpp
+++ b/include/boost/beast/http/field.hpp
@@ -38,6 +38,7 @@ enum class field : unsigned short
     access_control_allow_headers,
     access_control_allow_methods,
     access_control_allow_origin,
+    access_control_expose_headers,
     access_control_max_age,
     access_control_request_headers,
     access_control_request_method,
diff --git a/include/boost/beast/http/impl/field.ipp b/include/boost/beast/http/impl/field.ipp
index 8da470ff..467a40ae 100644
--- a/include/boost/beast/http/impl/field.ipp
+++ b/include/boost/beast/http/impl/field.ipp
@@ -26,7 +26,7 @@ namespace detail {
 struct field_table
 {
     using array_type =
-        std::array<string_view, 352>;
+        std::array<string_view, 353>;
 
     struct hash
     {
@@ -104,6 +104,7 @@ struct field_table
             "Access-Control-Allow-Headers",
             "Access-Control-Allow-Methods",
             "Access-Control-Allow-Origin",
+            "Access-Control-Expose-Headers",
             "Access-Control-Max-Age",
             "Access-Control-Request-Headers",
             "Access-Control-Request-Method",
diff --git a/test/beast/http/field.cpp b/test/beast/http/field.cpp
index 71046c7a..7fbf541a 100644
--- a/test/beast/http/field.cpp
+++ b/test/beast/http/field.cpp
@@ -50,6 +50,7 @@ public:
         match(field::access_control_allow_headers, "Access-Control-Allow-Headers");
         match(field::access_control_allow_methods, "Access-Control-Allow-Methods");
         match(field::access_control_allow_origin, "Access-Control-Allow-Origin");
+        match(field::access_control_expose_headers, "Access-Control-Expose-Headers");
         match(field::access_control_max_age, "Access-Control-Max-Age");
         match(field::access_control_request_headers, "Access-Control-Request-Headers");
         match(field::access_control_request_method, "Access-Control-Request-Method");
diff --git a/tools/field.txt b/tools/field.txt
index 9f15ab16..bc7926ce 100644
--- a/tools/field.txt
+++ b/tools/field.txt
@@ -13,6 +13,7 @@ Access-Control-Allow-Credentials
 Access-Control-Allow-Headers
 Access-Control-Allow-Methods
 Access-Control-Allow-Origin
+Access-Control-Expose-Headers
 Access-Control-Max-Age
 Access-Control-Request-Headers
 Access-Control-Request-Method