How to troubleshoot "Could not check origin for Phoenix.Socket transport" messages?
<p>I'm getting a lot of "Could not check origin for Phoenix.Socket transport" messages. This seems to indicate that something is hitting my server, but with a host name in the request that doesn't match the ones I have configured. How do I debug this? How can I tell where these requests are coming from, or what is in them, or what they requested? It doesn't tell me any of this in the "Could not check origin..." message. Nor do I get any other logging that tells me more. Is there somewhere that Phoenix logs all the requests it receives so I can see what is coming in?</p>