Use like: https://me.example.com/proxy/wss;//sealcraft.ddns.net;442/servers

Simple Caddy WebSocket & HTTP Proxy

# ALSO ADD YOUR SERVER'S PUBLIC IP WHERE IT SAYS "PUBLIC_IP_HERE" (remove the "#" too) TO PREVENT LOOPBACK!!
# by default, denies all ipv6 connections, because I am lazy

me.example.com {
    handle /proxy/* {
        @self remote_ip 10.0.0.0/8 172.16.0.0/12 192.168.0.0/16 ::/0 # PUBLIC_IP_HERE
        respond @self "Not today..." {
            close
        }
        @valid path_regexp proxy ^/proxy/(https?|wss?)[:;]/+([a-zA-Z0-9.-]+)(?:[:;](\d{1,5}))?(.*)$
        handle @valid {
            rewrite * {re.proxy.4}
            @hasport expression {re.proxy.3} != ""
            @secure expression {re.proxy.1} == "wss" || {re.proxy.1} == "https"
            handle @hasport {
                vars resuri {re.proxy.2}:{re.proxy.3}
                reverse_proxy @secure {vars.resuri} {
                    header_up -X-Forwarded-For
                    header_up -X-Forwarded-Proto
                    header_up -X-Forwarded-Host
                    header_up Host {upstream_hostport}
                    transport http {
                        tls
                        tls_insecure_skip_verify
                    }
                }
                reverse_proxy {vars.resuri} {
                    header_up -X-Forwarded-For
                    header_up -X-Forwarded-Proto
                    header_up -X-Forwarded-Host
                    header_up Host {upstream_hostport}
                }
            }
            handle @secure {
                vars resuri {re.proxy.2}:443
                reverse_proxy {vars.resuri} {
                    header_up -X-Forwarded-For
                    header_up -X-Forwarded-Proto
                    header_up -X-Forwarded-Host
                    header_up Host {upstream_hostport}
                    transport http {
                        tls
                        tls_insecure_skip_verify
                    }
                }
            }
            vars resuri {re.proxy.2}:80
            reverse_proxy {vars.resuri} {
                header_up -X-Forwarded-For
                header_up -X-Forwarded-Proto
                header_up -X-Forwarded-Host
                header_up Host {upstream_hostport}
            }
        }
        respond "Invalid request."
    }
}