Local Service Tunneling with FRP and Caddy Apr 14th 2019 Words: 231
This post is created a year ago, the content may be outdated.

Goal

Setup a WebDAV file server and a local webpage with Caddy, then expose the services to the Internet using FRP.

Localhost

Caddy

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# /etc/caddy/config
http://:80/webdav/ {
	log stdout
	basicauth / Apocalypse 4W9yaFeC8szfsJGF
        basicauth / Zaychik aKQG96BjmQ9Vq8AB
        webdav / {
                scope /mnt/share/
                Apocalypse:
                modify true
                Zaychik:
                modify false
        }
}

http://:80/web_dev/ {
	log stdout
	basicauth / Kaslana 9EuCXSvwdCnsPS3Q
        proxy / localhost:19999 {
        }
}

FRP Client

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# /etc/frp/frpc.ini
[common]
server_addr = foo.com
server_port = 7000
login_fail_exit = true
protocol = tcp
privilege_token = mZBhe5CaxjxTGdNL

[Web]
type = tcp
local_ip = 127.0.0.1
local_port = 80
remote_port = 8080
use_encryption = true
use_compression = true

Proxy Server

Caddy

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# /etc/caddy/config
http://foo.com:80, https://foo.com:443 {
	log stdout
	redir 301 {
			if {scheme} is http
			/ https://{host}{uri}
	}
	tls /path_to_cert/foo.com/fullchain /path_to_cert/foo.com/key
	root /wwwroot/
	index index.html

	proxy /frp/ http://127.0.0.1:8080 {
		without /frp	# strip '/frp' from the URI
		transparent
        }
}

FRP Server

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# /etc/frp/frps.ini
[common]
bind_port = 7000
kcp_bind_port = 7000
bind_udp_port = 7001
dashboard_port = 7500
dashboard_user = Rossweisse   
dashboard_pwd = tNyexbhGKY8pzHzU
privilege_token = mZBhe5CaxjxTGdNL

Tips

To add a WebDAV network location in Windows, the directory format must be “https://foo.com/frp/webdav/sub_dir". The trailing slash at the end must NOT be added, and at least one sub directory should be specified. “https://foo.com/frp/webdav/" and “https://foo.com/frp/webdav" will NOT work. Curse you stupid Windows!


EOF