[jira] [Created] (TS-2298) 400 Multi-Hop Cycle detected with .insert_request_via_str

["Jan-Frode Myklebust (JIRA)" <ji...@apache.org>]

Jan-Frode Myklebust created TS-2298:
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             Summary: 400 Multi-Hop Cycle detected with .insert_request_via_str
                 Key: TS-2298
                 URL: https://issues.apache.org/jira/browse/TS-2298
             Project: Traffic Server
          Issue Type: Bug
          Components: Core
            Reporter: Jan-Frode Myklebust


We're seeing "400 Multi-Hop Cycle detected" problems when proxy.config.http.insert_request_via_str is enabled. We see the same problem on both v4.0.2, v3.2.3 and v3.2.5.

The configuration we have that triggers this is:

{noformat}
map             http://www.example.com/            http://web1.example.net/
map             https://api.example.com             http://api1.examle.net/
{noformat}

where web1.example.net is using mod_proxy to proxy some requests to https://api.services.example.com:

{noformat}
SSLProxyEngine On
ProxyPass /api/menu   https://api.example.com/test/api/menu
{noformat}

If we www.example.com and api.example.com  is going trough the same trafficserver with proxy.config.http.insert_request_via_str enabled we get the Multi-Hop Cycle detected error. If they are going trough different physical hosts, or if we disable proxy.config.http.insert_request_via_str then the problem goes away.



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