-v "$TFCI_GIT_DIR:$WORKING_DIR" \
      --env-file "$env_file" \
      "$TFCI_DOCKER_IMAGE" \
    bash

  if [[ "$is_windows" == true ]]; then
    # Allow requests from the container.
    # Additional setup is contained in ci/official/envs/rbe.
    CONTAINER_IP_ADDR=$(docker inspect -f '{{range .NetworkSettings.Networks}}{{.IPAddress}}{{end}}' tf)

        assertEquals("/site1/search", result.getRoutingPath());

        // The header remains for subsequent tests due to static request handling
        // Different matching header added to same request
        request.addHeader("X-Forwarded-Host", "test.com");
        result = virtualHostHelper.getVirtualHostPath(page);
        assertEquals("/site1/search", result.getRoutingPath()); // Still site1 due to header precedence
    }

      MockResponse
        .Builder()
        .onRequestBody(CloseSocket())
        .build(),
    )
    val request = NonCompletingRequestBody()
    val call =
      client.newCall(
        Request
          .Builder()
          .url(server.url("/"))
          .post(request)
          .build(),
      )
    assertFailsWith<IOException> {
      call.execute()
    }

/// tip

The actual callback is just an HTTP request.

When implementing the callback yourself, you could use something like <a href="https://www.python-httpx.org" class="external-link" target="_blank">HTTPX</a> or <a href="https://requests.readthedocs.io/" class="external-link" target="_blank">Requests</a>.

///

## Write the callback documentation code { #write-the-callback-documentation-code }

When deploying applications you will probably want to have some **replication of processes** to take advantage of **multiple cores** and to be able to handle more requests.

As you saw in the previous chapter about [Deployment Concepts](concepts.md){.internal-link target=_blank}, there are multiple strategies you can use.

	}

	var (
		defaultSha256Cksum string
		v                  []string
		ok                 bool
	)

	// For a presigned request we look at the query param for sha256.
	if isRequestPresignedSignatureV4(r) {
		// X-Amz-Content-Sha256, if not set in presigned requests, checksum
		// will default to 'UNSIGNED-PAYLOAD'.
		defaultSha256Cksum = unsignedPayload
		v, ok = r.Form[xhttp.AmzContentSha256]
		if !ok {

        MetadataResolutionRequest request = new DefaultMetadataResolutionRequest();
        injectSession(request);
        request.setArtifact(artifact);
        request.setLocalRepository(localRepository);
        request.setRemoteRepositories(remoteRepositories);
        request.setResolveManagedVersions(resolveManagedVersions);
        return retrieve(request);
    }

    @Override

        RdmaNegotiateRequest request = new RdmaNegotiateRequest();
        request.setMinVersion(0x0100);
        request.setMaxVersion(0x0100);
        request.setCreditsRequested(credits.getInitialCredits());
        request.setPreferredSendSize(maxReceiveSize);
        request.setMaxReceiveSize(maxReceiveSize);
        request.setMaxFragmentedSize(rdmaConnection.maxFragmentedSize);
        

                break;
            }

            if (request != null) {
                log.debug("Resetting request");
                request.reset();
            }
            if (rpath != null) {
                // resolveDfs() and tree.send() modify the request packet.
                // I want to restore it before retrying. request.reset()

            // try TreeConnectAndX with the request
            // this does not make any sense if we are disconnecting right now
            T chainedResponse = null;
            if (!(request instanceof SmbComTreeDisconnect) && !(request instanceof Smb2TreeDisconnectRequest)) {
                chainedResponse = treeConnect(request, response);
            }