NosProtocol is a processless connection data structure and functions for the NosTale SE protocol.
To establish a open a connection, use open/3. This will return an opaque data
structure that represents the connection to the server. The connection is a first
opened in the user land and the socket is internaly managed by the library in
active mode (with active: :once). This means that TCP/SSL messages will be
delivered to the process that started the connection.
The process that owns the connection is responsible for receiving the messages
(for example, a GenServer is responsible for defining handle_info/2). However,
NosProtocol.Login or NosProtocol.World are responsible for the packet
deserialisation with the stream/2 function. This function takes the connection
and a term and returns :unknown if the term is not a TCP/SSL message belonging
to the connection. If the term is a message for the connection, then a response
and a new connection are returned. It's important to store the new returned
connection data structure over the old one since the connection is an immutable
data structure.