Starting the WebSocket server on port 6001...
New connection opened for app key 123456789.
Connection id 379728072.265648849 sending message {"event":"pusher:connection_established","data":"{\"socket_id\":\"379728072.265648849\",\"activity_timeout\":30}"}
123456: connection id 379728072.265648849 received message: {"event":"pusher:subscribe","data":{"channel":"user1256"}}.
Ratchet\RFC6455\Messaging\Message {#1018
  -_frames: SplDoublyLinkedList {#1019
    -flags: 0
    -dllist: array:1 [
      0 => Ratchet\RFC6455\Messaging\Frame {#1025
        #data: b"ü:{"event":"pusher:subscribe","data":{"channel":"user1256"}}"
        +bytesRecvd: 60
        #defPayLen: 58
        -isCoalesced: true
        #firstByte: 129
        #secondByte: 58
        -ufeg: Closure($msg = '') {#1024
          class: "Ratchet\RFC6455\Messaging\Frame"
          file: "./vendor/ratchet/rfc6455/src/Messaging/Frame.php"
          line: "77 to 79"
        }
      }
    ]
    mode: IT_MODE_FIFO | IT_MODE_KEEP
    dllist: array:1 [
      0 => Ratchet\RFC6455\Messaging\Frame {#1025}
    ]
  }
  -len: 58
}