clientTestRule.wrap(
            object : EventListener() {
              override fun connectionAcquired(
                call: Call,
                connection: Connection,
              ) {
                val sslSocket = connection.socket() as SSLSocket

                sessionIds.add(
                  sslSocket.session.id
                    .toByteString()
                    .hex(),

		// Without this closing connection would disallow re-using
		// the same connection for future uses.
		//  - http://stackoverflow.com/a/17961593/4465767
		defer respBody.Close()
		xioutil.DiscardReader(respBody)
	}

     * automatically send ping frames until either the connection fails or it is closed. This keeps
     * the connection alive and may detect connectivity failures.
     *
     * If the server does not respond to each ping with a pong within `interval`, this client will
     * assume that connectivity has been lost. When this happens on a web socket the connection is

stuck on the old version.

 *  **There is no longer a global singleton connection pool.** In OkHttp 2.x,
    all `OkHttpClient` instances shared a common connection pool by default.
    In OkHttp 3.x, each new `OkHttpClient` gets its own private connection pool.
    Applications should avoid creating many connection pools as doing so
    prevents connection reuse. Each connection pool holds its own set of

  <url>http://www.apache.org/path/to/parent/</url>
  <scm child.scm.connection.inherit.append.path="false"
       child.scm.developerConnection.inherit.append.path="false"
       child.scm.url.inherit.append.path="false">
    <connection>scm:my-scm:http://domain.org/base</connection>
    <developerConnection>scm:my-scm:https://domain.org/base/</developerConnection>
    <url>https://domain.org/base</url>

  <url>http://www.apache.org/path/to/parent/</url>
  <scm child.scm.connection.inherit.append.path="false"
       child.scm.developerConnection.inherit.append.path="false"
       child.scm.url.inherit.append.path="false">
    <connection>scm:my-scm:http://domain.org/base</connection>
    <developerConnection>scm:my-scm:https://domain.org/base/</developerConnection>
    <url>https://domain.org/base</url>

 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package okhttp3.internal.connection

/**
 * A RoutePlanner that will always establish a new connection, ignoring any connection pooling
 */
class ForceConnectRoutePlanner(
  private val delegate: RealRoutePlanner,
) : RoutePlanner by delegate {

      ProtocolException::class.java,
      "Expected 'Connection' header value 'Upgrade' but was 'null'",
    )
    webSocket.cancel()
  }

  @Test
  @Throws(IOException::class)
  fun wrongConnectionHeader() {
    webServer.enqueue(
      MockResponse
        .Builder()
        .code(101)
        .setHeader("Upgrade", "websocket")
        .setHeader("Connection", "Downgrade")

<project>
  <modelVersion>4.0.0</modelVersion>
  <groupId>maven</groupId>
  <artifactId>p0</artifactId>
  <packaging>pom</packaging>
  <version>1.0</version>

  <scm>
    <connection>scm:svn:http://host/p0</connection>
    <developerConnection>scm:svn:https://host/p0</developerConnection>
    <url>http://host/viewer?path=/p0</url>
  </scm>

  <modules>
    <module>modules/p1</module>
  </modules>

<project>
  <modelVersion>4.0.0</modelVersion>
  <groupId>maven</groupId>
  <artifactId>p0</artifactId>
  <packaging>pom</packaging>
  <version>1.0</version>

  <scm>
    <connection>scm:svn:http://host/p0</connection>
    <developerConnection>scm:svn:https://host/p0</developerConnection>
    <url>http://host/viewer?path=/p0</url>
  </scm>

  <modules>
    <module>modules/p1</module>
  </modules>