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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