lock.assertHeld()

    val routeUrl = route.address.url

    if (url.port != routeUrl.port) {
      return false // Port mismatch.
    }

    if (url.host == routeUrl.host) {
      return true // Host match. The URL is supported.
    }

    // We have a host mismatch. But if the certificate matches, we're still good.
    return !noCoalescedConnections && handshake != null && certificateSupportHost(url, handshake!!)

Dispatcher (`import okhttp3.mockwebserver.Dispatcher`) to handle requests using another policy. One natural policy is to
dispatch on the request path.
You can, for example, filter the request instead of using `server.enqueue()`.

```java
final Dispatcher dispatcher = new Dispatcher() {

    @Override
    public MockResponse dispatch (RecordedRequest request) throws InterruptedException {

        switch (request.getPath()) {

    MockWebServer server = new MockWebServer();
    server.useHttps(sslContext.getSocketFactory(), false);
    server.setDispatcher(this);
    server.start(port);
  }

  @Override public MockResponse dispatch(RecordedRequest request) {
    String path = request.getPath();
    try {
      if (!path.startsWith("/") || path.contains("..")) throw new FileNotFoundException();

      File file = new File(root + path);

So we have a dedicated thread for every socket that just reads frames and dispatches them.

      fail<Any>()
    } catch (expected: ConnectException) {
    }
  }

  @Test
  fun shutdownWhileBlockedDispatching() {
    // Enqueue a request that'll cause MockWebServer to hang on QueueDispatcher.dispatch().
    val connection = server.url("/").toUrl().openConnection() as HttpURLConnection
    connection.setReadTimeout(500)
    try {
      connection.getResponseCode()
      fail<Any>()

    val dispatcher: QueueDispatcher =
      object : QueueDispatcher() {
        override fun dispatch(request: RecordedRequest): MockResponse {
          if (peek().socketPolicy === DisconnectAfterRequest) {
            requestFinished.await()
          }
          return super.dispatch(request)
        }
      }
    dispatcher.enqueueResponse(MockResponse(body = "seed connection pool"))

package okhttp3.mockwebserver

import mockwebserver3.QueueDispatcher

class QueueDispatcher : Dispatcher() {
  internal val delegate = QueueDispatcher()

  @Throws(InterruptedException::class)
  override fun dispatch(request: RecordedRequest): MockResponse {
    throw UnsupportedOperationException("unexpected call")
  }

  override fun peek(): MockResponse {
    throw UnsupportedOperationException("unexpected call")
  }

public abstract class mockwebserver3/Dispatcher {
	public fun <init> ()V
	public abstract fun dispatch (Lmockwebserver3/RecordedRequest;)Lmockwebserver3/MockResponse;
	public fun peek ()Lmockwebserver3/MockResponse;
	public fun shutdown ()V
}

public final class mockwebserver3/MockResponse {
	public static final field Companion Lmockwebserver3/MockResponse$Companion;
	public fun <init> ()V
	public fun <init> (I)V
	public fun <init> (ILokhttp3/Headers;)V

minimatch@5.0.1:
  version "5.0.1"
  resolved "https://registry.yarnpkg.com/minimatch/-/minimatch-5.0.1.tgz#fb9022f7528125187c92bd9e9b6366be1cf3415b"
  integrity sha512-nLDxIFRyhDblz3qMuq+SoRZED4+miJ/G+tdDrjkkkRnjAsBexeGpgjLEQ0blJy7rHhR2b93rhQY4SvyWu9v03g==
  dependencies:
    brace-expansion "^2.0.1"

minimatch@^3.0.4, minimatch@^3.1.1:
  version "3.1.2"

Calls can be canceled from any thread. This will fail the call if it hasn’t yet completed! Code that is writing the request body or reading the response body will suffer an `IOException` when its call is canceled.

## Dispatch

For synchronous calls, you bring your own thread and are responsible for managing how many simultaneous requests you make. Too many simultaneous connections wastes resources; too few harms latency.