nginx - Does nginx bytes_sent and request_length variables include tcp and tls headers?

Question

Does nginx bytes_sent and request_length variables include tcp and tls headers?

$bytes_sent : number of bytes sent to a client (1.3.8, 1.2.5)

static ngx_int_t
ngx_http_variable_bytes_sent(ngx_http_request_t *r,
    ngx_http_variable_value_t *v, uintptr_t data)
{
    u_char  *p;

    p = ngx_pnalloc(r->pool, NGX_OFF_T_LEN);
    if (p == NULL) {
        return NGX_ERROR;
    }

    v->len = ngx_sprintf(p, "%O", r->connection->sent) - p;
    v->valid = 1;
    v->no_cacheable = 0;
    v->not_found = 0;
    v->data = p;

    return NGX_OK;
}

$request_length : request length (including request line, header, and request body) (1.3.12, 1.2.7)

static ngx_int_t
ngx_http_variable_request_length(ngx_http_request_t *r,
    ngx_http_variable_value_t *v, uintptr_t data)
{
    u_char  *p;

    p = ngx_pnalloc(r->pool, NGX_OFF_T_LEN);
    if (p == NULL) {
        return NGX_ERROR;
    }

    v->len = ngx_sprintf(p, "%O", r->request_length) - p;
    v->valid = 1;
    v->no_cacheable = 0;
    v->not_found = 0;
    v->data = p;

    return NGX_OK;
}

If not, how can one get accurate bytes received from client and bytes sent to client.

标签： nginx