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markt pushed a commit to branch 11.0.x
in repository https://gitbox.apache.org/repos/asf/tomcat.git


The following commit(s) were added to refs/heads/11.0.x by this push:
     new 4338ab9911 HTTP method names are case sensitive (RFC 9110, 9.1)
4338ab9911 is described below

commit 4338ab99113c8cb95f8babfb2ac8ab596ed542be
Author: Mark Thomas <[email protected]>
AuthorDate: Wed Sep 10 17:04:48 2025 +0100

    HTTP method names are case sensitive (RFC 9110, 9.1)
---
 java/org/apache/catalina/authenticator/AuthenticatorBase.java | 2 +-
 java/org/apache/catalina/authenticator/FormAuthenticator.java | 4 ++--
 java/org/apache/catalina/ssi/SSIServletExternalResolver.java  | 2 +-
 test/org/apache/catalina/startup/TomcatBaseTest.java          | 2 +-
 webapps/docs/changelog.xml                                    | 4 ++++
 5 files changed, 9 insertions(+), 5 deletions(-)

diff --git a/java/org/apache/catalina/authenticator/AuthenticatorBase.java 
b/java/org/apache/catalina/authenticator/AuthenticatorBase.java
index 8f99ee8a12..0efd94e587 100644
--- a/java/org/apache/catalina/authenticator/AuthenticatorBase.java
+++ b/java/org/apache/catalina/authenticator/AuthenticatorBase.java
@@ -486,7 +486,7 @@ public abstract class AuthenticatorBase extends ValveBase 
implements Authenticat
 
         // Make sure that constrained resources are not cached by web proxies
         // or browsers as caching can provide a security hole
-        if (constraints != null && disableProxyCaching && 
!"POST".equalsIgnoreCase(request.getMethod())) {
+        if (constraints != null && disableProxyCaching && 
!"POST".equals(request.getMethod())) {
             if (securePagesWithPragma) {
                 // Note: These can cause problems with downloading files with 
IE
                 response.setHeader("Pragma", "No-cache");
diff --git a/java/org/apache/catalina/authenticator/FormAuthenticator.java 
b/java/org/apache/catalina/authenticator/FormAuthenticator.java
index 56c5228284..3e5c60ff8d 100644
--- a/java/org/apache/catalina/authenticator/FormAuthenticator.java
+++ b/java/org/apache/catalina/authenticator/FormAuthenticator.java
@@ -585,7 +585,7 @@ public class FormAuthenticator extends AuthenticatorBase {
         String method = saved.getMethod();
         MimeHeaders rmh = request.getCoyoteRequest().getMimeHeaders();
         rmh.recycle();
-        boolean cacheable = "GET".equalsIgnoreCase(method) || 
"HEAD".equalsIgnoreCase(method);
+        boolean cacheable = "GET".equals(method) || "HEAD".equals(method);
         Iterator<String> names = saved.getHeaderNames();
         while (names.hasNext()) {
             String name = names.next();
@@ -619,7 +619,7 @@ public class FormAuthenticator extends AuthenticatorBase {
 
             // If no content type specified, use default for POST
             String savedContentType = saved.getContentType();
-            if (savedContentType == null && "POST".equalsIgnoreCase(method)) {
+            if (savedContentType == null && "POST".equals(method)) {
                 savedContentType = Globals.CONTENT_TYPE_FORM_URL_ENCODING;
             }
 
diff --git a/java/org/apache/catalina/ssi/SSIServletExternalResolver.java 
b/java/org/apache/catalina/ssi/SSIServletExternalResolver.java
index 204cd9ab94..4d2bdbc0b1 100644
--- a/java/org/apache/catalina/ssi/SSIServletExternalResolver.java
+++ b/java/org/apache/catalina/ssi/SSIServletExternalResolver.java
@@ -493,7 +493,7 @@ public class SSIServletExternalResolver implements 
SSIExternalResolver {
              * Make an assumption that an empty response is a failure. This is 
a problem if a truly empty file were
              * included, but not sure how else to tell.
              */
-            if (retVal.isEmpty() && !req.getMethod().equalsIgnoreCase("HEAD")) 
{
+            if (retVal.isEmpty() && !req.getMethod().equals("HEAD")) {
                 throw new 
IOException(sm.getString("ssiServletExternalResolver.noFile", path));
             }
             return retVal;
diff --git a/test/org/apache/catalina/startup/TomcatBaseTest.java 
b/test/org/apache/catalina/startup/TomcatBaseTest.java
index 5183e129a8..81b360e929 100644
--- a/test/org/apache/catalina/startup/TomcatBaseTest.java
+++ b/test/org/apache/catalina/startup/TomcatBaseTest.java
@@ -596,7 +596,7 @@ public abstract class TomcatBaseTest extends 
LoggingBaseTest {
             }
 
             int bodySize = 0;
-            if ("PUT".equalsIgnoreCase(request.getMethod())) {
+            if ("PUT".equals(request.getMethod())) {
                 InputStream is = request.getInputStream();
                 int read = 0;
                 byte[] buffer = new byte[8192];
diff --git a/webapps/docs/changelog.xml b/webapps/docs/changelog.xml
index e845af503c..d98c4be3c7 100644
--- a/webapps/docs/changelog.xml
+++ b/webapps/docs/changelog.xml
@@ -113,6 +113,10 @@
         in RFC 9110 that hash functions used to generate strong ETags should be
         collision resistant. (markt)
       </update>
+      <fix>
+        HTTP methods are case-sensitive so always use case sensitive 
comparisons
+        when comparing HTTP methods. (markt)
+      </fix>
     </changelog>
   </subsection>
   <subsection name="Coyote">


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