[tomcat] 01/03: Refactor LinkedList to Deque and ArrayDeque

[markt]

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markt pushed a commit to branch main
in repository https://gitbox.apache.org/repos/asf/tomcat.git
commit 5daaee5df36770d38648be4cbf12606920efd5ea
Author: Mark Thomas <ma...@apache.org>
AuthorDate: Thu Oct 6 13:51:48 2022 +0100

    Refactor LinkedList to Deque and ArrayDeque
---
 java/org/apache/catalina/filters/RemoteIpFilter.java | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/java/org/apache/catalina/filters/RemoteIpFilter.java 
b/java/org/apache/catalina/filters/RemoteIpFilter.java
index fcf6e25fa5..6a4570800d 100644
--- a/java/org/apache/catalina/filters/RemoteIpFilter.java
+++ b/java/org/apache/catalina/filters/RemoteIpFilter.java
@@ -20,7 +20,9 @@ import java.io.IOException;
 import java.io.ObjectInputStream;
 import java.net.InetAddress;
 import java.net.UnknownHostException;
+import java.util.ArrayDeque;
 import java.util.Collections;
+import java.util.Deque;
 import java.util.Enumeration;
 import java.util.HashMap;
 import java.util.Iterator;
@@ -798,7 +800,7 @@ public class RemoteIpFilter extends GenericFilter {
         if (isInternal || (trustedProxies != null &&
                 trustedProxies.matcher(request.getRemoteAddr()).matches())) {
             String remoteIp = null;
-            LinkedList<String> proxiesHeaderValue = new LinkedList<>();
+            Deque<String> proxiesHeaderValue = new ArrayDeque<>();
             StringBuilder concatRemoteIpHeaderValue = new StringBuilder();
 
             for (Enumeration<String> e = request.getHeaders(remoteIpHeader); 
e.hasMoreElements();) {


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