function readSync() {
    const TLS_CERT = process.env.TLS_CERT;
    const TLS_KEY = process.env.TLS_KEY;
    const TLS_CA = process.env.TLS_CA;
    const tls_cert = readOpt("--tls-cert");
    const tls_key = readOpt("--tls-key");
    const tls_ca = readOpt("--tls-ca");
    const result = {
        secureOptions: constants.SSL_OP_NO_TLSv1
    };    

    if (tls_cert) {
        if (tls_key) {
            result.cert = fs.readFileSync(tls_cert);
            result.key = fs.readFileSync(tls_key);

            if (tls_ca) {
                result.ca = fs.readFileSync(tls_ca);
            }
        } else {
            result.pfx = fs.readFileSync(tls_cert);
        }
    } else if (TLS_CERT) {
        if (TLS_KEY) {
            result.cert = fs.readFileSync(TLS_CERT);
            result.key = fs.readFileSync(TLS_KEY);

            if (TLS_CA) {
                result.ca = fs.readFileSync(TLS_CA);
            }
        } else {
            result.pfx = fs.readFileSync(TLS_CERT);
        }
    }

    return result;
}
function readSync() {
    const TLS_CERT = process.env.TLS_CERT;
    const TLS_KEY = process.env.TLS_KEY;
    const TLS_CA = process.env.TLS_CA;
    const tls_cert = readOpt("--tls-cert");
    const tls_key = readOpt("--tls-key");
    const tls_ca = readOpt("--tls-ca");
    const result = {
        secureOptions: constants.SSL_OP_NO_TLSv1
    };    

    if (tls_cert) {
        if (tls_key) {
            result.cert = fs.readFileSync(tls_cert);
            result.key = fs.readFileSync(tls_key);

            if (tls_ca) {
                result.ca = fs.readFileSync(tls_ca);
            }
        } else {
            result.pfx = fs.readFileSync(tls_cert);
        }
    } else if (TLS_CERT) {
        if (TLS_KEY) {
            result.cert = fs.readFileSync(TLS_CERT);
            result.key = fs.readFileSync(TLS_KEY);

            if (TLS_CA) {
                result.ca = fs.readFileSync(TLS_CA);
            }
        } else {
            result.pfx = fs.readFileSync(TLS_CERT);
        }
    }

    return result;
}
function readSync ( ) { const TLS_CERT = process . env . TLS_CERT ; const TLS_KEY = process . env . TLS_KEY ; const TLS_CA = process . env . TLS_CA ; const tls_cert = readOpt ( "--tls-cert" ) ; const tls_key = readOpt ( "--tls-key" ) ; const tls_ca = readOpt ( "--tls-ca" ) ; const result = { secureOptions : constants . SSL_OP_NO_TLSv1 } ; if ( tls_cert ) { if ( tls_key ) { result . cert = fs . readFileSync ( tls_cert ) ; result . key = fs . readFileSync ( tls_key ) ; if ( tls_ca ) { result . ca = fs . readFileSync ( tls_ca ) ; } } else { result . pfx = fs . readFileSync ( tls_cert ) ; } } else if ( TLS_CERT ) { if ( TLS_KEY ) { result . cert = fs . readFileSync ( TLS_CERT ) ; result . key = fs . readFileSync ( TLS_KEY ) ; if ( TLS_CA ) { result . ca = fs . readFileSync ( TLS_CA ) ; } } else { result . pfx = fs . readFileSync ( TLS_CERT ) ; } } return result ; }
Read TLS options from filesystem synchronously.  Paths are read from CLI
options or environment variables.
@returns {object}
Read TLS options from filesystem synchronously . Paths are read from CLI options or environment variables .