diff --git a/httpclient5-cache/src/main/java/org/apache/hc/client5/http/impl/cache/CacheSupport.java b/httpclient5-cache/src/main/java/org/apache/hc/client5/http/impl/cache/CacheSupport.java
index 383cfa731..7fa1af24b 100644
--- a/httpclient5-cache/src/main/java/org/apache/hc/client5/http/impl/cache/CacheSupport.java
+++ b/httpclient5-cache/src/main/java/org/apache/hc/client5/http/impl/cache/CacheSupport.java
@@ -28,15 +28,22 @@ package org.apache.hc.client5.http.impl.cache;
 
 import java.net.URI;
 import java.net.URISyntaxException;
+import java.util.BitSet;
+import java.util.function.Consumer;
 
 import org.apache.hc.client5.http.utils.URIUtils;
 import org.apache.hc.core5.annotation.Internal;
+import org.apache.hc.core5.http.FormattedHeader;
+import org.apache.hc.core5.http.Header;
 import org.apache.hc.core5.http.HttpHost;
 import org.apache.hc.core5.http.HttpRequest;
 import org.apache.hc.core5.http.URIScheme;
+import org.apache.hc.core5.http.message.ParserCursor;
 import org.apache.hc.core5.net.URIAuthority;
 import org.apache.hc.core5.net.URIBuilder;
 import org.apache.hc.core5.util.Args;
+import org.apache.hc.core5.util.CharArrayBuffer;
+import org.apache.hc.core5.util.Tokenizer;
 
 /**
  * HTTP cache support utilities.
@@ -130,4 +137,37 @@ public final class CacheSupport {
         }
     }
 
+    private static final BitSet COMMA = Tokenizer.INIT_BITSET(',');
+
+    // This method should be provided by MessageSupport from core
+    public static void parseTokens(final CharSequence src, final ParserCursor cursor, final Consumer<String> consumer) {
+        Args.notNull(src, "Source");
+        Args.notNull(cursor, "Cursor");
+        while (!cursor.atEnd()) {
+            final int pos = cursor.getPos();
+            if (src.charAt(pos) == ',') {
+                cursor.updatePos(pos + 1);
+            }
+            final String token = Tokenizer.INSTANCE.parseToken(src, cursor, COMMA);
+            if (consumer != null) {
+                consumer.accept(token);
+            }
+        }
+    }
+
+    // This method should be provided by MessageSupport from core
+    public static void parseTokens(final Header header, final Consumer<String> consumer) {
+        Args.notNull(header, "Header");
+        if (header instanceof FormattedHeader) {
+            final CharArrayBuffer buf = ((FormattedHeader) header).getBuffer();
+            final ParserCursor cursor = new ParserCursor(0, buf.length());
+            cursor.updatePos(((FormattedHeader) header).getValuePos());
+            parseTokens(buf, cursor, consumer);
+        } else {
+            final String value = header.getValue();
+            final ParserCursor cursor = new ParserCursor(0, value.length());
+            parseTokens(value, cursor, consumer);
+        }
+    }
+
 }