ngx_http_ssl_create_srv_conf

在 src\http\modules\ngx_http_ssl_module.c

static void *
ngx_http_ssl_create_srv_conf(ngx_conf_t *cf)
{
    ngx_http_ssl_srv_conf_t  *sscf;

    sscf = ngx_pcalloc(cf->pool, sizeof(ngx_http_ssl_srv_conf_t));
    if (sscf == NULL) {
        return NULL;
    }

    /*
     * set by ngx_pcalloc():
     *
     *     sscf->protocols = 0;
     *     sscf->certificate_values = NULL;
     *     sscf->dhparam = { 0, NULL };
     *     sscf->ecdh_curve = { 0, NULL };
     *     sscf->client_certificate = { 0, NULL };
     *     sscf->trusted_certificate = { 0, NULL };
     *     sscf->crl = { 0, NULL };
     *     sscf->ciphers = { 0, NULL };
     *     sscf->shm_zone = NULL;
     *     sscf->ocsp_responder = { 0, NULL };
     *     sscf->stapling_file = { 0, NULL };
     *     sscf->stapling_responder = { 0, NULL };
     */

    sscf->enable = NGX_CONF_UNSET;
    sscf->prefer_server_ciphers = NGX_CONF_UNSET;
    sscf->early_data = NGX_CONF_UNSET;
    sscf->reject_handshake = NGX_CONF_UNSET;
    sscf->buffer_size = NGX_CONF_UNSET_SIZE;
    sscf->verify = NGX_CONF_UNSET_UINT;
    sscf->verify_depth = NGX_CONF_UNSET_UINT;
    sscf->certificates = NGX_CONF_UNSET_PTR;
    sscf->certificate_keys = NGX_CONF_UNSET_PTR;
    sscf->passwords = NGX_CONF_UNSET_PTR;
    sscf->conf_commands = NGX_CONF_UNSET_PTR;
    sscf->builtin_session_cache = NGX_CONF_UNSET;
    sscf->session_timeout = NGX_CONF_UNSET;
    sscf->session_tickets = NGX_CONF_UNSET;
    sscf->session_ticket_keys = NGX_CONF_UNSET_PTR;
    sscf->ocsp = NGX_CONF_UNSET_UINT;
    sscf->ocsp_cache_zone = NGX_CONF_UNSET_PTR;
    sscf->stapling = NGX_CONF_UNSET;
    sscf->stapling_verify = NGX_CONF_UNSET;

    return sscf;
}

这个函数是 Nginx 中用于创建 HTTP SSL 服务器级配置结构体的函数

---

    sscf = ngx_pcalloc(cf->pool, sizeof(ngx_http_ssl_srv_conf_t));
    if (sscf == NULL) {
        return NULL;
    }

分配内存，作为一个 ngx_http_ssl_srv_conf_t 结构体

sscf 也是函数的返回值

---

    sscf->enable = NGX_CONF_UNSET;
    sscf->prefer_server_ciphers = NGX_CONF_UNSET;
    sscf->early_data = NGX_CONF_UNSET;
    sscf->reject_handshake = NGX_CONF_UNSET;
    sscf->buffer_size = NGX_CONF_UNSET_SIZE;
    sscf->verify = NGX_CONF_UNSET_UINT;
    sscf->verify_depth = NGX_CONF_UNSET_UINT;
    sscf->certificates = NGX_CONF_UNSET_PTR;
    sscf->certificate_keys = NGX_CONF_UNSET_PTR;
    sscf->passwords = NGX_CONF_UNSET_PTR;
    sscf->conf_commands = NGX_CONF_UNSET_PTR;
    sscf->builtin_session_cache = NGX_CONF_UNSET;
    sscf->session_timeout = NGX_CONF_UNSET;
    sscf->session_tickets = NGX_CONF_UNSET;
    sscf->session_ticket_keys = NGX_CONF_UNSET_PTR;
    sscf->ocsp = NGX_CONF_UNSET_UINT;
    sscf->ocsp_cache_zone = NGX_CONF_UNSET_PTR;
    sscf->stapling = NGX_CONF_UNSET;
    sscf->stapling_verify = NGX_CONF_UNSET;

给以上字段赋值，这个值代表 该字段尚未设置

---

return sscf;

返回 结构体地址