{* ../../docs_src/advanced_middleware/tutorial002.py hl[2,6:8] *}

The following arguments are supported:

* `allowed_hosts` - A list of domain names that should be allowed as hostnames. Wildcard domains such as `*.example.com` are supported for matching subdomains. To allow any hostname either use `allowed_hosts=["*"]` or omit the middleware.

If an incoming request does not validate correctly then a `400` response will be sent.

## `GZipMiddleware`

labels.depth=Depth
labels.excludedPaths=Excluded Paths For Crawling
labels.excludedUrls=Excluded URLs For Crawling
labels.excludedDocPaths=Excluded Paths For Indexing
labels.excludedDocUrls=Excluded URLs For Indexing
labels.hostname=Hostname
labels.id=ID
labels.includedPaths=Included Paths For Crawling
labels.includedUrls=Included URLs For Crawling
labels.includedDocPaths=Included Paths For Indexing
labels.includedDocUrls=Included URLs For Indexing

     * expired because under normal circumstances SID information never changes.
     *
     * @param authorityServerName
     *            The hostname of the server that should be queried. For maximum efficiency this should be the hostname
     *            of a domain controller however a member server will work as well and a domain controller may not

        .build()
    serverCert =
      HeldCertificate.Builder()
        .signedBy(serverIntermediateCa)
        .serialNumber(3L)
        .commonName("Local Host")
        .addSubjectAlternativeName(server.hostName)
        .build()
    clientRootCa =
      HeldCertificate.Builder()
        .serialNumber(1L)
        .certificateAuthority(1)
        .commonName("root")
        .addSubjectAlternativeName("root_ca.com")

import okhttp3.internal.SuppressSignatureCheck

/** OpenJDK 9+. */
open class Jdk9Platform : Platform() {
  @SuppressSignatureCheck
  override fun configureTlsExtensions(
    sslSocket: SSLSocket,
    hostname: String?,
    protocols: List<@JvmSuppressWildcards Protocol>,
  ) {
    val sslParameters = sslSocket.sslParameters

    val names = alpnProtocolNames(protocols)

message IngressLoadBalancerIngress {
  // ip is set for load-balancer ingress points that are IP based.
  // +optional
  optional string ip = 1;

  // hostname is set for load-balancer ingress points that are DNS based.
  // +optional
  optional string hostname = 2;

  // ports provides information about the ports exposed by this LoadBalancer.
  // +listType=atomic
  // +optional
  repeated IngressPortStatus ports = 4;

   * https://github.com/square/okhttp/issues/5770
   */
  @Test fun proxySelectorNotCalledForNullHost() {
    // The string '>' is okay in a hostname in HttpUrl, which does very light hostname validation.
    // It is not okay in URI, and so it's stripped and we get a URI with a null host.
    val bogusHostname = ">"
    val address =
      factory.newAddress(

		}
		seenClientIDs.Add(p.ClientID)

		p.URL, err = xnet.ParseHTTPURL(configURL)
		if err != nil {
			return c, err
		}
		configURLDomain := p.URL.Hostname()
		p.DiscoveryDoc, err = parseDiscoveryDoc(p.URL, transport, closeRespFn)
		if err != nil {
			return c, err
		}

		if p.ClaimUserinfo && configURL == "" {

            doColumn("createdTime");
        }

        public void columnFileConfigId() {
            doColumn("fileConfigId");
        }

        public void columnHostname() {
            doColumn("hostname");
        }

        public void columnParameters() {
            doColumn("parameters");
        }

        public void columnPassword() {
            doColumn("password");
        }

    result = 31 * result + address.hashCode()
    result = 31 * result + proxy.hashCode()
    result = 31 * result + socketAddress.hashCode()
    return result
  }

  /**
   * Returns a string with the URL hostname, socket IP address, and socket port, like one of these:
   *
   *  * `example.com:80 at 1.2.3.4:8888`
   *  * `example.com:443 via proxy [::1]:8888`
   *
   * This omits duplicate information when possible.
   */