From 29e6edcc4735379fe758fff2b5ffeb09389fa215 Mon Sep 17 00:00:00 2001
From: Carlos Monteiro <42719844+ca-monteiro@users.noreply.github.com>
Date: Sat, 8 Apr 2023 16:17:43 +0100
Subject: [PATCH] [JENKINS-70630] - Fix HTTP2 missing header (#7701)

* JENKINS-70630 - fix HTTP2 missing header

* JENKINS-70630 - remove port

* Simplify assignment of currentRequestHost

https://github.com/jenkinsci/jenkins/pull/7701#discussion_r1133365472

* Make it compile

---------

Co-authored-by: Carlos Monteiro <carlos.monteiro@inmarsat.com>
Co-authored-by: Alexander Brandes <mc.cache@web.de>
Co-authored-by: Mark Waite <mark.earl.waite@gmail.com>
---
 .../main/java/jenkins/security/ResourceDomainConfiguration.java | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/core/src/main/java/jenkins/security/ResourceDomainConfiguration.java b/core/src/main/java/jenkins/security/ResourceDomainConfiguration.java
index a985273b30..f5465ca4b6 100644
--- a/core/src/main/java/jenkins/security/ResourceDomainConfiguration.java
+++ b/core/src/main/java/jenkins/security/ResourceDomainConfiguration.java
@@ -134,7 +134,7 @@ public final class ResourceDomainConfiguration extends GlobalConfiguration {
 
         StaplerRequest currentRequest = Stapler.getCurrentRequest();
         if (currentRequest != null) {
-            String currentRequestHost = currentRequest.getHeader("Host");
+            String currentRequestHost = currentRequest.getServerName();
 
             if (currentRequestHost.equals(resourceRootUrlHost)) {
                 return FormValidation.error(Messages.ResourceDomainConfiguration_SameAsCurrent());