mudit-97 commented on a change in pull request #423:
URL: https://github.com/apache/knox/pull/423#discussion_r606210158



##########
File path: 
gateway-spi/src/main/java/org/apache/knox/gateway/dispatch/ConfigurableDispatch.java
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@@ -41,13 +47,26 @@
 public class ConfigurableDispatch extends DefaultDispatch {
   private Set<String> requestExcludeHeaders = 
super.getOutboundRequestExcludeHeaders();
   private Set<String> responseExcludeHeaders = 
super.getOutboundResponseExcludeHeaders();
+  private Map<String, String> requestAppendHeaders = new HashMap<>();
   private Set<String> responseExcludeSetCookieHeaderDirectives = 
super.getOutboundResponseExcludedSetCookieHeaderDirectives();
   private Boolean removeUrlEncoding = false;
 
   private Set<String> convertCommaDelimitedHeadersToSet(String headers) {
     return headers == null ?  Collections.emptySet(): new 
HashSet<>(Arrays.asList(headers.split("\\s*,\\s*")));
   }
 
+  private Map<String, String> convertJSONHeadersToMap(String headers) {

Review comment:
       Analysed both the approaches which I posted above, first one looks like 
we are allowing a new special variable which does not come under param scope, 
that looked a little bad to me
   Second one however looks functionally more correct but will require many 
changes in param structure in  CustomDispatch class, which currently allows 
only name, value pairs inside it
   
   Not sure what should be done here




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