preserve_host

[wdqzdd]

Summary

• Kong version ($ kong version) 2.4.1
• A concise summary of the bug.
  set preserve_host =true，in service i get host is route host:service port

Steps To Reproduce

1. service config:

hosts 10.10.0.10  
port 8086
path /

2. route config:

preserve_host true
hosts www.aaa.com
path /

3. In my web service （10.10.0.10:8086）（asp.net mvc 5），i get request url is www.aaa.com:8086. i want get it is www.aaa.com

Additional Details & Logs

• Kong debug-level startup logs ($ kong start --vv)
• Kong error logs (<KONG_PREFIX>/logs/error.log)
• Kong configuration (the output of a GET request to Kong's Admin port - see
  https://docs.konghq.com/latest/admin-api/#retrieve-node-information)
• Operating system

[wdqzdd]

kong version 2.5.0

[kikito]

Hello @wdqzdd,

It seems to me that the preserve_host property is unrelated with your issue. That property is used to adjust the Host when matching via host. Your problem is not the host, but the port.

What is happening is that your webservice is listening to http traffic from a non-default http port (8086). The only way to communicate with a device listening on port 8086 is by sending traffic through that port. So you will always receive requests on port :8086 if that's where your service is listening.

The only way to solve this is by moving your service to the default http ports - 80 for HTTP or 443 for HTTPS traffic.