awaitingPong = true
    }

    if (failedPing != -1) {
      failWebSocket(
        e =
          SocketTimeoutException(
            "sent ping but didn't receive pong within " +
              "${pingIntervalMillis}ms (after ${failedPing - 1} successful ping/pongs)",
          ),
        isWriter = true,
      )
      return
    }

    try {
      writer.writePing(ByteString.EMPTY)

!!! note "Technical Details"
    ASGI is a new "standard" being developed by Django core team members. It is still not a "Python standard" (a PEP), although they are in the process of doing that.

    }
  }

  /**
   * Reads a message body into across one or more frames. Control frames that occur between
   * fragments will be processed. If the message payload is masked this will unmask as it's being
   * processed.
   */
  @Throws(IOException::class)
  private fun readMessage() {
    while (true) {
      if (closed) throw IOException("closed")

      if (frameLength > 0L) {

Sebastián Ramírez <******@****.***> 1652485102 -0500

   * the problem impacts just one stream or the entire connection.
   *
   * To differentiate the two cases we ping the server when a stream times out. If the overall
   * connection is fine the ping will receive a pong; otherwise it won't.
   *
   * The deadline to respond to this ping attempts to limit the cost of being wrong. If it is too
   * long, streams created while we await the pong will reuse broken connections and inevitably

  Alice did not much like keeping so close to her:  first,
because the Duchess was VERY ugly; and secondly, because she was
exactly the right height to rest her chin upon Alice's shoulder,
and it was an uncomfortably sharp chin.  However, she did not
like to be rude, so she bore it as well as she could.

  `The game's going on rather better now,' she said, by way of
keeping up the conversation a little.

	}
}

// WriterToChannel will return an io.Writer that writes to the given channel.
// The context both allows returning errors on writes and to ensure that
// this isn't abandoned if the channel is no longer being read from.
func WriterToChannel(ctx context.Context, ch chan<- []byte) io.Writer {
	return &writerWrapper{ch: ch, ctx: ctx}
}

// bytesOrLength returns small (<=100b) byte slices as string, otherwise length.

from typing import Union

from fastapi import Cookie, FastAPI
from typing_extensions import Annotated

app = FastAPI()


@app.get("/items/")
async def read_items(ads_id: Annotated[Union[str, None], Cookie()] = None):

  Alice did not much like keeping so close to her:  first,
because the Duchess was VERY ugly; and secondly, because she was
exactly the right height to rest her chin upon Alice's shoulder,
and it was an uncomfortably sharp chin.  However, she did not
like to be rude, so she bore it as well as she could.

  `The game's going on rather better now,' she said, by way of
keeping up the conversation a little.

from typing import Union

from fastapi import FastAPI, Query
from typing_extensions import Annotated

app = FastAPI()


@app.get("/items/")
async def read_items(q: Annotated[Union[str, None], Query(min_length=3)] = ...):
    results = {"items": [{"item_id": "Foo"}, {"item_id": "Bar"}]}
    if q:
        results.update({"q": q})