return relatedQueryMap.size();
    }

    /**
     * Extracts the virtual host key from a RelatedQuery entity.
     * If the virtual host is blank or null, returns an empty string.
     *
     * @param entity the RelatedQuery entity to extract the host key from
     * @return the virtual host key, or empty string if blank or null
     */
    protected String getHostKey(final RelatedQuery entity) {

Impone que todas las requests entrantes tengan correctamente configurado el header `Host`, para proteger contra ataques de HTTP Host Header.

{* ../../docs_src/advanced_middleware/tutorial002_py39.py hl[2,6:8] *}

Se soportan los siguientes argumentos:

labels.webauth_configuration=Uwierzytelnianie web
labels.webauth_list_hostname=Nazwa hosta
labels.webauth_list_web_crawling_config=Nazwa konfiguracji
labels.webauth_any=Dowolny
labels.webauth_create_web_config=Utwórz nową konfigurację web
labels.webauth_title_details=Uwierzytelnianie web
labels.webauth_hostname=Nazwa hosta
labels.webauth_port=Port
labels.webauth_realm=Obszar
labels.webauth_scheme=Schemat

Garante que todas as requisições recebidas tenham um cabeçalho `Host` corretamente configurado, a fim de proteger contra ataques de cabeçalho de host HTTP.

{* ../../docs_src/advanced_middleware/tutorial002_py39.py hl[2,6:8] *}

Os seguintes argumentos são suportados:

{* ../../docs_src/advanced_middleware/tutorial001_py39.py hl[2,6] *}

## `TrustedHostMiddleware` { #trustedhostmiddleware }

Erzwingt, dass alle eingehenden Requests einen korrekt gesetzten `Host`-Header haben, um sich vor HTTP-Host-Header-Angriffen zu schützen.

{* ../../docs_src/advanced_middleware/tutorial002_py39.py hl[2,6:8] *}

Die folgenden Argumente werden unterstützt:

{* ../../docs_src/advanced_middleware/tutorial001_py39.py hl[2,6] *}

## `TrustedHostMiddleware` { #trustedhostmiddleware }

Enforces that all incoming requests have a correctly set `Host` header, in order to guard against HTTP Host Header attacks.

{* ../../docs_src/advanced_middleware/tutorial002_py39.py hl[2,6:8] *}

The following arguments are supported:

labels.max_access_count=Número máximo de acessos
labels.number_of_thread=Número de threads
labels.interval_time=Intervalo
labels.millisec=milissegundos
labels.permissions=Permissões
labels.virtual_hosts=Hosts virtuais
labels.virtual_host=Host virtual
labels.label_type=Rótulo
labels.file_crawling_button_create=Criar
labels.file_crawling_button_create_job=Criar novo trabalho
labels.web_crawling_configuration=Rastreamento da Web

labels.max_access_count=Número máximo de accesos
labels.number_of_thread=Número de hilos
labels.interval_time=Intervalo
labels.millisec=milisegundos
labels.permissions=Permisos
labels.virtual_hosts=Hosts virtuales
labels.virtual_host=Host virtual
labels.label_type=Etiqueta
labels.file_crawling_button_create=Crear
labels.file_crawling_button_create_job=Crear nuevo trabajo
labels.web_crawling_configuration=Rastreo web

labels.max_access_count=Max Access Count
labels.number_of_thread=Number of Threads
labels.interval_time=Interval
labels.millisec=msec
labels.permissions=Permissions
labels.virtual_hosts=Virtual Hosts
labels.virtual_host=Virtual Host
labels.label_type=Label
labels.file_crawling_button_create=Create
labels.file_crawling_button_create_job=Create New Job
labels.web_crawling_configuration=Web Crawling

        return buf.toString().trim();
    }

    /**
     * Replaces duplicate hosts in the URL using the duplicate host helper.
     *
     * @param url the URL to process
     * @return the URL with duplicate hosts replaced
     */
    protected String replaceDuplicateHost(final String url) {
        try {
            // remove duplicate host