},
							Headers: map[string]*networking.StringMatch{
								"version": {
									MatchType: &networking.StringMatch_Exact{Exact: "v1"},
								},
							},
						},
					},
					Route:   []*networking.HTTPRouteDestination{{Destination: dstV1}},
					Timeout: &durationpb.Duration{Seconds: 10},
					Headers: &networking.Headers{
						Request: &networking.Headers_HeaderOperations{

						path    string
						headers http.Header
						allow   allowValue
						skipFn  func(t framework.TestContext)
					}{
						// Test headers.
						{
							path:    "/request-headers",
							headers: headers.New().With("x-foo", "foo").Build(),
							allow:   true,
						},
						{
							path:    "/request-headers",
							headers: headers.New().With("x-foo", "bar").Build(),

    // Write the mocking script.
    peer.sendFrame().settings(Settings())
    peer.acceptFrame() // ACK
    peer.acceptFrame() // SYN_STREAM
    peer.sendFrame().headers(false, 3, headerEntries("headers", "bam"))
    peer.acceptFrame() // PING
    peer.sendFrame().headers(true, 3, headerEntries("trailers", "boom"))
    peer.sendFrame().ping(true, Http2Connection.AWAIT_PING, 0) // PONG
    peer.play()

    // Play it back.

    assertThat(request.headers[":scheme"]).isEqualTo(scheme)
    assertThat(request.headers[":authority"]).isEqualTo(
      server.hostName + ":" + server.port,
    )
    val pushedRequest = server.takeRequest()
    assertThat(pushedRequest.requestLine).isEqualTo("GET /foo/bar HTTP/1.1")
    assertThat(pushedRequest.headers["foo"]).isEqualTo("bar")
  }

  @ParameterizedTest

			if h == nil {
				continue
			}
			if vs.Headers == nil {
				vs.Headers = &istio.Headers{}
			}
			vs.Headers.Request = h
		case k8s.GRPCRouteFilterResponseHeaderModifier:
			h := createHeadersFilter(filter.ResponseHeaderModifier)
			if h == nil {
				continue
			}
			if vs.Headers == nil {
				vs.Headers = &istio.Headers{}
			}
			vs.Headers.Response = h
		case k8s.GRPCRouteFilterRequestMirror:

				opt.Check = check.OK()
				overrideCheck(&opt)
				src.CallOrFail(t, opt)
			})
			t.NewSubTest("headers allow").Run(func(t framework.TestContext) {
				opt := opt.DeepCopy()
				opt.HTTP.Path = "/headers"
				if opt.HTTP.Headers == nil {
					opt.HTTP.Headers = map[string][]string{}
				}
				opt.HTTP.Headers.Set("x-test-header", "match")
				opt.Check = check.OK()
				overrideCheck(&opt)

			if !canBeConvertedToPresentMatch(stringMatch) {
				matcher.TreatMissingHeaderAsEmpty = true
			}
			out.Headers = append(out.Headers, matcher)
		}
	}

	// guarantee ordering of headers
	sort.Slice(out.Headers, func(i, j int) bool {
		return out.Headers[i].Name < out.Headers[j].Name
	})

	if in.Uri != nil {
		switch m := in.Uri.MatchType.(type) {
		case *networking.StringMatch_Exact:

	public final fun addUnsafeNonAscii (Ljava/lang/String;Ljava/lang/String;)Lokhttp3/Headers$Builder;
	public final fun build ()Lokhttp3/Headers;
	public final fun get (Ljava/lang/String;)Ljava/lang/String;
	public final fun removeAll (Ljava/lang/String;)Lokhttp3/Headers$Builder;
	public final fun set (Ljava/lang/String;Ljava/lang/String;)Lokhttp3/Headers$Builder;

[source.multi-language-sample,c]
.src/hello/headers/pch.h
----
include::{snippetsPath}/native-binaries/pre-compiled-headers/groovy/src/hello/headers/pch.h[]
----

=== Example: Including a precompiled header file in a source file

[source.multi-language-sample,cpp]
.src/hello/cpp/hello.cpp
----
include::{snippetsPath}/native-binaries/pre-compiled-headers/groovy/src/hello/cpp/hello.cpp[]
----

		Name:             "acme",
	},
	Spec: &networking.VirtualService{
		Hosts:    []string{"headers.test.istio.io"},
		Gateways: []string{"some-gateway"},
		Http: []*networking.HTTPRoute{
			{
				Match: []*networking.HTTPMatchRequest{
					{
						Name: "headers-only",
						Headers: map[string]*networking.StringMatch{
							"version": {
								MatchType: &networking.StringMatch_Exact{