[TS-2530] False positive detected for Multi-Hop cycle when using private IP

• Type: Bug
• Status: Closed
• Priority: Major
• Resolution: Fixed
• Fix Version/s: 4.2.0
• Component/s: Core
• Assignee: Alan M. Carroll
• Reporter: Ron Barber
• Created: 24/Jan/14 18:53
• Updated: 18/Dec/14 05:04
• Resolved: 29/Jan/14 16:12

Description

With hosts A and B running ATS where both hosts have private IPs (10.0.0.1 & 10.0.0.2) AND have a local loopback which have a public IP 27.1.1.1 we are getting HTTP/1.1 400 Multi-Hop Cycle Detected when host A forwards a request to host B.

ATS searches the incoming Via header for its own ip address (Machine::instance()->ip_hex_string) to determine if the request has been forwarded back to itself.

Cause: ATS is selecting the public IP address of the server to insert in the Via header (even if it's not on a routable interface).