From b14425d8659bd29c9dc69a839fbb27637effd28d Mon Sep 17 00:00:00 2001
From: "Zaiming (Stone) Shi" <zmstone@gmail.com>
Date: Thu, 28 Sep 2023 11:40:21 +0200
Subject: [PATCH] fix(sso/saml): ensure lower case http header name

---
 apps/emqx_dashboard_sso/src/emqx_dashboard_sso_saml_api.erl | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/apps/emqx_dashboard_sso/src/emqx_dashboard_sso_saml_api.erl b/apps/emqx_dashboard_sso/src/emqx_dashboard_sso_saml_api.erl
index fecf433c4..ccc40e2c6 100644
--- a/apps/emqx_dashboard_sso/src/emqx_dashboard_sso_saml_api.erl
+++ b/apps/emqx_dashboard_sso/src/emqx_dashboard_sso_saml_api.erl
@@ -85,7 +85,7 @@ sp_saml_metadata(get, _Req) ->
         #{enable := true, sp := SP} = _State ->
             SignedXml = esaml_sp:generate_metadata(SP),
             Metadata = xmerl:export([SignedXml], xmerl_xml),
-            {200, #{<<"Content-Type">> => <<"text/xml">>}, erlang:iolist_to_binary(Metadata)};
+            {200, #{<<"content-type">> => <<"text/xml">>}, erlang:iolist_to_binary(Metadata)};
         _ ->
             {404, #{code => ?BACKEND_NOT_FOUND, message => <<"Backend not found">>}}
     end.