If you use NGINX or CaddyServer, you could set HTTPS proxy for SRS, please read #2881, it works like this:
OBS --> SRS --HTTP--> NGINX --HTTPS--> Viewers
Note: It's a HTTPS reverse proxy, if you need a HLS cluster, please read this.
However, ossrs/srs has support for https but they don't enable it by default. So do this to enable https
I install ossrs/srs by using docker, default config uses port 8088 for https so remember to expose that port for docker
 docker run -d -p 1935:1935 -p 1985:1985 -p 8080:8080 -p 8088:8088 \
     ossrs/srs:v4 ./objs/srs -c conf/srs.conf
 
Change http_server part in config file '/usr/local/srs/conf/srs.conf'
Change from
 http_server {
     enabled         on;
     listen          8080;
     dir             ./objs/nginx/html;
 }
To
 http_server {
     enabled         on;
     listen          8080;
     dir             ./objs/nginx/html;
     https {
         # Whether enable HTTPS Streaming.
         # default: off
         enabled on;
         # The listen endpoint for HTTPS Streaming.
         # default: 8088
         listen 8088;
         # The SSL private key file, generated by:
         #       openssl genrsa -out server.key 2048
         # default: ./conf/server.key
         key ./conf/server.key;
         # The SSL public cert file, generated by:
         #       openssl req -new -x509 -key server.key -out server.crt -days 3650 -subj "/C=CN/ST=Beijing/L=Beijing/O=Me/OU=Me/CN=ossrs.net"
         # default: ./conf/server.crt
         cert ./conf/server.crt;
     }
 }
 
Remember to upload your server.key and server.crt to conf folder (you can generated self signed certificate by comment guidelines above)
 
Restart docker to complete