Chris M. Hostetter created SOLR-14898:
-----------------------------------------
Summary: Proxied/Forwarded requests to other nodes wind up getting
duplicate response headers
Key: SOLR-14898
URL: https://issues.apache.org/jira/browse/SOLR-14898
Project: Solr
Issue Type: Bug
Security Level: Public (Default Security Level. Issues are Public)
Reporter: Chris M. Hostetter
When Solr receives a request for a collection not hosted on the current node,
HttpSolrCall forwards/proxies that request - but the final response for the
client can include duplicate response headers - one header from the remote node
that ultimately handled the request, and a second copy of the header added by
the current node...
{noformat}
# create a simple 2 node cluster...
$ ./bin/solr -e cloud -noprompt
# ...
$ curl
'http://localhost:8983/solr/admin/collections?action=CREATE&name=solo&numShards=1&nrtReplicas=1'
# ...
# node 8983 is the node currently hosting the only replica of the 'solo'
collection, and responds to requests directly...
#
$ curl -S -s -D - -o /dev/null http://localhost:8983/solr/solo/select
HTTP/1.1 200 OK
Content-Security-Policy: default-src 'none'; base-uri 'none'; connect-src
'self'; form-action 'self'; font-src 'self'; frame-ancestors 'none'; img-src
'self'; media-src 'self'; style-src 'self' 'unsafe-inline'; script-src 'self';
worker-src 'self';
X-Content-Type-Options: nosniff
X-Frame-Options: SAMEORIGIN
X-XSS-Protection: 1; mode=block
Content-Type: application/json;charset=utf-8
Content-Length: 169
# node 7574 does not host a replica, and forwards requests for it to 8983
# the response the client gets from 7574 has several security related headers
duplicated...
#
$ curl -S -s -D - -o /dev/null http://localhost:7574/solr/solo/select
HTTP/1.1 200 OK
Content-Security-Policy: default-src 'none'; base-uri 'none'; connect-src
'self'; form-action 'self'; font-src 'self'; frame-ancestors 'none'; img-src
'self'; media-src 'self'; style-src 'self' 'unsafe-inline'; script-src 'self';
worker-src 'self';
X-Content-Type-Options: nosniff
X-Frame-Options: SAMEORIGIN
X-XSS-Protection: 1; mode=block
Content-Security-Policy: default-src 'none'; base-uri 'none'; connect-src
'self'; form-action 'self'; font-src 'self'; frame-ancestors 'none'; img-src
'self'; media-src 'self'; style-src 'self' 'unsafe-inline'; script-src 'self';
worker-src 'self';
X-Content-Type-Options: nosniff
X-Frame-Options: SAMEORIGIN
X-XSS-Protection: 1; mode=block
Content-Type: application/json;charset=utf-8
Content-Length: 197
{noformat}
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