emqx4.3/examples/listeners.ssl.conf.example

##--------------------------------------------------------------------
## SSL Listener
##
## Add a SSL Listener
##--------------------------------------------------------------------
## Note: This is an example of how to configure this feature
##       you should copy and paste the below data into the emqx.conf for working

## The SSL listener also supports all the fields listed in listeners.tcp.conf.example
## only the SSL-specific fields are shown here

## Note: Modifying the 'sslname' to what you need
listeners.ssl.sslname {
    ## Port or Address to listen on, 0 means disable
    bind = 8883 ## or with an IP e.g. "127.0.0.1:8883"

    ssl_options {
        ## Trusted PEM format CA certificates bundle file
        cacertfile = "data/certs/cacert.pem"

        ## PEM format certificates chain file
        certfile = "data/certs/cert.pem"

        ## PEM format private key file
        keyfile = "data/certs/key.pem"

        ## Enable or disable peer verification
        verify = verify_none  ## use verify_peer to enable

        ## if `verify' is ebabled, whit true, the connection fails if the client does not have a certificate to send
        fail_if_no_peer_cert = false

        ## Enable TLS session reuse
        reuse_sessions = true

        ## Maximum number of non-self-issued intermediate certificates that can follow the peer certificate in a valid certification path
        depth = 10

        ## Which versions are to be supported
        versions = [tlsv1.3, tlsv1.2]

        ## TLS cipher suite names
        ## Note: By default, all available suites are supported, you do not need to set this
        ciphers = ["TLS_AES_256_GCM_SHA384","TLS_AES_128_GCM_SHA256"]

        ## Allows a client and a server to renegotiate the parameters of the SSL connection on the fly
        secure_renegotiate = true

        ## Log level for SSL communication
        ## Type: emergency | alert | critical | error | warning | notice | info | debug | none | all
        log_level = notice

        ## Hibernate the SSL process after idling for amount of time reducing its memory footprint
        hibernate_after = 5s

        ## Forces the cipher to be set based on the server-specified order instead of the client-specified order
        honor_cipher_order = true

        ##  Setting this to false to disable client-initiated renegotiation
        client_renegotiation = true

        ## Maximum time duration allowed for the handshake to complete
        handshake_timeout = 15s
    }
}