让rTorrent支持自签名SSL。
openssl s_client -connect <server.tld>:443 | tee <server.tld>_out_cert
openssl x509 -inform PEM -in <server.tld>_out_cert -text -out <server.tld>_out_cert.pem
mv <server.tld>_out_cert.pem /etc/ssl/certs
cd /etc/ssl/certs
c_rehash
vi rtorrent.rc, add config below, and restart rtorrent.
# Self_signed Certs network.http.capath = /etc/ssl/certs/