Deprecation for #24

Marked WebsocketCompressionContextFactory argument as deprecated and unused.

src/Rfc6455ClientFactory.php

@@ -24,7 +24,8 @@ final class Rfc6455ClientFactory implements WebsocketClientFactory
  use ForbidSerialization;
 
  /**
- * @param WebsocketCompressionContextFactory|null $compressionContextFactory Use null to disable compression.
+ * @param WebsocketCompressionContextFactory|null $compressionContextFactory Deprecated. This argument is unused.
+ * Compression is not supported in v3.x but will be in v4.x.
  * @param WebsocketHeartbeatQueue|null $heartbeatQueue Use null to disable automatic heartbeats (pings).
  * @param WebsocketRateLimit|null $rateLimit Use null to disable client rate limits.
  */
@@ -64,24 +65,10 @@ public function createClient(
  }
  }
 
- $compressionContext = null;
- if ($this->compressionContextFactory) {
- $extensions = \array_map('trim', \explode(',', (string) $request->getHeader('sec-websocket-extensions')));
-
- foreach ($extensions as $extension) {
- if ($compressionContext = $this->compressionContextFactory->fromClientHeader($extension, $headerLine)) {
- /** @psalm-suppress PossiblyNullArgument */
- $response->setHeader('sec-websocket-extensions', $headerLine);
- break;
- }
- }
- }
-
  return new Rfc6455Client(
  socket: $socket,
  masked: false,
  parserFactory: $this->parserFactory,
- compressionContext: $compressionContext,
  heartbeatQueue: $this->heartbeatQueue,
  rateLimit: $this->rateLimit,
  frameSplitThreshold: $this->frameSplitThreshold,