aria2 is a lightweight multi-protocol & multi-source command-line download utility. It supports HTTP/HTTPS, FTP, SFTP, BitTorrent and Metalink.

The SSL certificate used by the Aria2 server does not support port 6800, so NPM (Nginx Proxy Manager) needs to be used to provide both HTTP(s) and Aria2 JSONRPC services.

Edit NPM (Nginx Proxy Manager)

Proxy Host » Advanced

2023-01-26_153027

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#ARIA2
    location /jsonrpc {
        proxy_pass http://10.2.2.3:6800/jsonrpc;
        proxy_redirect off;
        proxy_set_header        X-Real-IP       $remote_addr;
        proxy_set_header        X-Forwarded-For $proxy_add_x_forwarded_for;
        proxy_set_header Host $host;
	#The following code supports WebSocket
        proxy_http_version 1.1;
        proxy_set_header Upgrade $http_upgrade;
        proxy_set_header Connection "upgrade";
    }
ParameterDescription
location /jsonrpcRPC address is //example.com/jsonrpc
http://10.2.2.3:6800/jsonrpcThe full path of the host (10.2.2.3 is host IP address)

Final Result:

2023-01-26_153126

2023-01-26_153139

You can now connect to ARIA2 RPC via “https” and “wss” (WebSocket Secure).

Reference: