* 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

    // Play it back.
    val connection = connect(peer)
    connection.newStream(headerEntries("a", "android"), false)
    connection.withLock {
      if (!connection.isHealthy(System.nanoTime())) {
        throw ConnectionShutdownException()
      }
    }
    connection.writePing()
    connection.shutdown(ErrorCode.PROTOCOL_ERROR)
    assertThat(connection.openStreamCount()).isEqualTo(1)

 *  **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

  private fun waitForConnectionShutdown(connection: RealConnection?) {
    if (connection!!.isHealthy(false)) {
      Thread.sleep(100L)
    }
    if (connection.isHealthy(false)) {
      Thread.sleep(2000L)
    }
    if (connection.isHealthy(false)) {
      throw TimeoutException("connection didn't shutdown within timeout")
    }
  }

  /**

MINIO_NOTIFY_POSTGRES_MAX_OPEN_CONNECTIONS (number)             maximum number of open connections to the database, defaults to '2'
```

> NOTE: If the `max_open_connections` key or the environment variable `MINIO_NOTIFY_POSTGRES_MAX_OPEN_CONNECTIONS` is set to `0`, There will be no limit set on the number of

              {
                "filters": [
                  {
                    "name": "envoy.filters.network.http_connection_manager",
                    "typed_config": {
                      "@type": "type.googleapis.com/envoy.extensions.filters.network.http_connection_manager.v3.HttpConnectionManager",
                      "stat_prefix": "agent",
                      "route_config": {

    assertThat(connectionAcquired2.connection).isSameAs(
      connectionAcquired1.connection,
    )
  }

  @Test
  fun multipleConnectionsFoundForSingleCall() {
    server.enqueue(
      MockResponse.Builder()
        .code(301)
        .addHeader("Location", "/foo")
        .addHeader("Connection", "Close")
        .build(),
    )
    server.enqueue(

            log.trace("Release session " + usage + " " + this);
        }

        if ( usage == 0 ) {
            if ( log.isDebugEnabled() ) {
                log.debug("Usage dropped to zero, release connection " + this.transport);
            }
            synchronized ( this ) {
                if ( this.transportAcquired.compareAndSet(true, false) ) {
                    this.transport.release();
                }

                {
                  "filters": [
                    {
                      "name": "envoy.filters.network.http_connection_manager",
                      "typed_config": {
                        "@type": "type.googleapis.com/envoy.extensions.filters.network.http_connection_manager.v3.HttpConnectionManager",
                        "stat_prefix": "connect_terminate",
                        "route_config": {

	public fun connectEnd (Lokhttp3/Connection;Lokhttp3/Route;Lokhttp3/Call;)V
	public fun connectFailed (Lokhttp3/Route;Lokhttp3/Call;Ljava/io/IOException;)V
	public fun connectStart (Lokhttp3/Route;Lokhttp3/Call;)V
	public fun connectionAcquired (Lokhttp3/Connection;Lokhttp3/Call;)V
	public fun connectionClosed (Lokhttp3/Connection;)V
	public fun connectionReleased (Lokhttp3/Connection;Lokhttp3/Call;)V