upstreamReader = null
          ******@****.***All()
        }
      }
    }

    override fun timeout(): Timeout = timeout

    @Throws(IOException::class)
    override fun close() {
      if (fileOperator == null) return // Already closed.
      fileOperator = null

      var fileToClose: RandomAccessFile? = null
      synchronized(this@Relay) {
        sourceCount--

                                                            </h4>
                                                            <button type="button" class="close" data-dismiss="modal"
                                                                    aria-label="Close">
                                                                <span aria-hidden="true">×</span>
                                                            </button>

                                                    </h4>
                                                    <button type="button" class="close" data-dismiss="modal"
                                                            aria-label="Close">
                                                        <span aria-hidden="true">×</span>
                                                    </button>

 *
 *  3. Attempt plans from prior connect attempts for this call. These occur as either follow-ups to
 *     failed connect attempts (such as trying the next [ConnectionSpec]), or as attempts that lost
 *     a race in fast follow-up.
 *
 *  4. If there's no existing connection, make a list of routes (which may require blocking DNS
 *     lookups) and attempt new connections to them. When failures occur, retries iterate the

            this.next = null;
        }
        return n;
    }

    /**
     * {@inheritDoc}
     *
     * @see jcifs.CloseableIterator#close()
     */
    @Override
    public void close() throws CIFSException {
        if (this.next != null) {
            doClose();
        }
    }

    /**
     *
     */
    private void doClose() {

                                                        </h4>
                                                        <button type="button" class="close" data-dismiss="modal"
                                                                aria-label="Close">
                                                            <span aria-hidden="true">×</span>
                                                        </button>

    stream = http2Connection.newStream(requestHeaders, hasRequestBody)
    // We may have been asked to cancel while creating the new stream and sending the request
    // headers, but there was still no stream to close.
    if (canceled) {
      stream!!.closeLater(ErrorCode.CANCEL)
      throw IOException("Canceled")
    }
    stream!!.readTimeout().timeout(chain.readTimeoutMillis.toLong(), TimeUnit.MILLISECONDS)

```
commit 4f3317effea38c203c358af9cb5ce3c0e4173976
Author: Klaus Post <******@****.***>
Date:   Mon Nov 8 08:41:27 2021 -0800

    Close stream on panic (#13605)

    Always close streamHTTPResponse on panic on main thread to avoid
    write/flush after response handler has returned.
```

```
λ git cherry-pick 4f3317effea38c203c358af9cb5ce3c0e4173976
```

        override fun onFailure(
          call: Call,
          e: IOException,
        ) {}

        override fun onResponse(
          call: Call,
          response: Response,
        ) {
          response.close()
        }
      }
    repeat(10_000) {
      okhttp.newCall(Request.Builder().url(server.url("/")).build()).enqueue(callback)
    }
    okhttp.dispatcher.executorService.shutdown()
  }

            - receive_bytes
            - receive_json
            - iter_text
            - iter_bytes
            - iter_json
            - send_text
            - send_bytes
            - send_json
            - close

When a client disconnects, a `WebSocketDisconnect` exception is raised, you can catch it.

You can import it directly form `fastapi`:

```python
from fastapi import WebSocketDisconnect
```