[trafficserver] branch master updated: Add duplicate header field processing when creating outgoing response (#7207)

[eze]

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eze pushed a commit to branch master
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The following commit(s) were added to refs/heads/master by this push:
     new 086908f  Add duplicate header field processing when creating outgoing 
response (#7207)
086908f is described below

commit 086908fed45d98e170f8f026ec31ca7cebff59c4
Author: Evan Zelkowitz <e...@apache.org>
AuthorDate: Mon Sep 21 09:21:07 2020 -0600

    Add duplicate header field processing when creating outgoing response 
(#7207)
    
    Currently when we are copying fields from a generated base response over
    to our outgoing response we ignore duplicate fields.  This can remove
    entries from headers such as Cache-Control if they come in on multiple
    header fields
---
 proxy/http/HttpTransact.cc | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/proxy/http/HttpTransact.cc b/proxy/http/HttpTransact.cc
index 4fdb683..48202c6 100644
--- a/proxy/http/HttpTransact.cc
+++ b/proxy/http/HttpTransact.cc
@@ -7846,6 +7846,14 @@ HttpTransact::build_response(State *s, HTTPHdr 
*base_response, HTTPHdr *outgoing
               ink_assert(field != nullptr);
               value = field->value_get(&len);
               outgoing_response->value_append(fields[i].name, fields[i].len, 
value, len, false);
+              if (field->has_dups()) {
+                field = field->m_next_dup;
+                while (field) {
+                  value = field->value_get(&len);
+                  outgoing_response->value_append(fields[i].name, 
fields[i].len, value, len, true);
+                  field = field->m_next_dup;
+                }
+              }
             }
           }
         }