ctx.url has the same content as ctx.href
I have the problem that ctx.url has the same content as ctx.href. 
But this is only the case if our HAProxy makes health checks to the API.

**From HAProxy health check:**
* ctx.href = http://app.example.com/health
* ctx.url   = http://app.example.com/health
* header = `{"connection":"close"}`

**From a Client over HAProxy**
* ctx.href = https://app.example.com/health
* ctx.url   = /health
* header
   ``` json
   {
     "cache-control": "no-cache",
     "user-agent": "PostmanRuntime/7.1.1",
     "accept": "*/*",
     "host": "app.example.com",
     "accept-encoding": "gzip, deflate",
     "x-forwarded-for": "172.16.2.123, 172.16.2.123",
     "x-forwarded-port": "443",
     "x-forwarded-proto": "https",
     "connection": "close"
   } 
   ```

Could it be a problem with missing headers at the HAProxy request?