Wenn Sie jedoch benutzerdefinierte Header haben, die ein Client in einem Browser sehen soll, müssen Sie sie zu Ihrer CORS-Konfiguration ([CORS (Cross-Origin Resource Sharing)](cors.md)) hinzufügen, indem Sie den Parameter `expose_headers` verwenden, der in [Starlettes CORS-Dokumentation](https://www.starlette.dev/middleware/#corsmiddleware) dokumentiert ist.

///

	return http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
		if origin := w.Header().Get("Access-Control-Allow-Origin"); origin == "null" {
			// This is a workaround change to ensure that "Origin: null"
			// incoming request to a response back as "*" instead of "null"
			w.Header().Set("Access-Control-Allow-Origin", "*")
		}
		if globalDNSConfig == nil || !globalBucketFederation ||

    description: "Testing of Elasticsearch pull requests - docs-check"
    workspace: "/dev/shm/elastic+elasticsearch+pull-request+docs-check"
    scm:
      - git:
          refspec: "+refs/pull/${ghprbPullId}/*:refs/remotes/origin/pr/${ghprbPullId}/*"
          branches:
            - "${ghprbActualCommit}"
    triggers:
      - github-pull-request:
          org-list:
            - elastic
          allow-whitelist-orgs-as-admins: true

                 bwcBranch = project.provider { "7.x" }
                 checkoutDir = project.provider{file("build/checkout")}
            }
        """
        execute("git branch origin/7.x", file("cloned"))
    }

    def "current repository can be cloned"() {
        when:
        def result = gradleRunner("createClone", '--stacktrace').build()
        then:

        # TF's CI runs 'git fetch origin "pull/PR#/merge:pull_branch"'
        # To get the as-merged branch during the CI tests
        git diff --diff-filter ACMRT --name-only pull_branch^ pull_branch > $BATS_FILE_TMPDIR/changed_files
    else
        # If the branch is not present, then diff against origin/master
        git diff --diff-filter ACMRT --name-only origin/master > $BATS_FILE_TMPDIR/changed_files
    fi
}

    workspace: "/dev/shm/elastic+elasticsearch+pull-request+rest-compatibility"
    scm:
      - git:
          refspec: "+refs/pull/${ghprbPullId}/*:refs/remotes/origin/pr/${ghprbPullId}/*"
          branches:
            - "${ghprbActualCommit}"
    triggers:
      - github-pull-request:
          org-list:
            - elastic
          allow-whitelist-orgs-as-admins: true

        dependsOn('extracted')
    }

    tasks.named("assemble").configure {
        dependsOn('tar')
    }
}

def calculateBranchVersion() {
    File f = rootProject.file(".git/refs/heads/origin")
    def branchName = f.list()?.first().trim()
    return branchName + ".1"

   * returns an arbitrary (but consistent) endpoint of the origin edge.
   */
  public final N nodeU() {
    return nodeU;
  }

  /**
   * Returns the node {@link #adjacentNode(Object) adjacent} to {@link #nodeU()} along the origin
   * edge. If this {@link EndpointPair} {@link #isOrdered()}, this is equal to {@link #target()}.
   */
  public final N nodeV() {

/**
 * The concrete route used by a connection to reach an abstract origin server. When creating a
 * connection the client has many options:
 *
 *  * **HTTP proxy:** a proxy server may be explicitly configured for the client. Otherwise, the
 *    [proxy selector][java.net.ProxySelector] is used. It may return multiple proxies to attempt.
 *  * **IP address:** whether connecting directly to an origin server or a proxy, opening a socket

    project-type: matrix
    node: master
    child-workspace: "/dev/shm/elastic+elasticsearch+pull-request+full-bwc"
    scm:
      - git:
          refspec: "+refs/pull/${ghprbPullId}/*:refs/remotes/origin/pr/${ghprbPullId}/*"
          branches:
            - "${ghprbActualCommit}"
    triggers:
      - github-pull-request:
          org-list:
            - elastic
          allow-whitelist-orgs-as-admins: true