Caddy trying to connect to a different IP address

[matrixebiz (James)]

1. Caddy version (caddy version):

Just downloaded latest version today. Not sure where to check for version number.

2. How I run Caddy:

a. System environment:

Windows

b. Command:

caddy.exe

c. Service/unit/compose file:

Paste full file contents here.
Make sure backticks stay on their own lines,
and the post looks nice in the preview pane.

d. My complete Caddyfile or JSON config:

server.ser:80 {
root * /www/
file_server
}
server.ser:443 {
root * /www/
file_server
}

3. The problem I’m having:

How/why is Caddy checking one of my other servers? This server that I am running it on server.ser has a different IP address, the IP address below is one of my other servers, weird. See message below

4. Error messages and/or full log output:

2021/07/21 16:13:21.467 ERROR http.log.error Stat \www\streams\ : invalid argument {“request”: {“remote_addr”: “51.161.xx.xxx:57459”, “proto”: “HTTP/1.1”, “method”: “GET”, “host”: “server.ser”, “uri”: "/streams/%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00

5. What I already tried:

Updated to the latest Caddy version
Tried ipconfig /flushdns
Pinging server.ser externally gives the correct IP Address

6. Links to relevant resources:

[francislavoie]

remote_addr is IP address of the incoming request, not the IP the server is listening on.

TCP packets carry their source IP address so that a response can be sent back to the same address.

That error is because the URL of the request was bad and didn’t point to a real file on your machine. If you’re running it on Windows, then you probably wanted something like this as your site root:

root * C:\www

@matrixebiz

1. Caddy version (caddy version):

Just downloaded latest version today. Not sure where to check for version number.

Run the command caddy.exe version to see the version.

[matrixebiz (James)]

Ah, yes, okay, that makes sense now as I do have the other server accessing files on this server. So I can also change root * /www/ to root * C:\www in my config file to stop that message from displaying? Thank you

[francislavoie]

It depends where your files you want to serve are located. Forward slashes are unix-style paths though. Use the path to your site on your windows machine.

[matrixebiz (James)]

Sorry, what I meant to ask was if there is a way to suppress that particular error message? I don’t need it displayed in the Caddy log window as I know there may be files missing at times which is fine for my purpose. Thx

[francislavoie]

Not really. It’s a valid error. If you’re making requests with a really long file path with null bytes, then you’re gonna get an error.

[matrixebiz (James)]

Okay, no problem, thanks