frps.toml

bindPort = 7000
vhostHTTPPort = 7001
custom404Page = "./error.html"

Nginx

server {
    listen 443 ssl;
    ssl_certificate xxx;
    ssl_certificate_key xxx;
    server_name xxx;
  
    location / {
        proxy_pass http://127.0.0.1:7001;
    }
}

frpc.toml

serverAddr = "port.frps.url"
serverPort = 7000

[[proxies]]
name = "web_2"
type = "http"
localPort = 80
customDomains = ["web2.frps.url"]