If the connection is resumable.
The data for the message.
The data for the message.
An encoder for the message.
An encoder for the message.
The op code for the message.
The op code for the message.
If the connection is resumable.
A sequence number for the message if there is one.
A sequence number for the message if there is one.
Sent by the gateway if the session is invalid when resuming a connection.
If the connection is resumable.