Implement connecting and subscribing

include/stomp.hrl

@@ -0,0 +1,19 @@
+%% Client ack modes, refer to the STOMP protocol documentation
+-type ack_mode() :: client | client_individual | auto.
+
+%% Subscriptions are enumerated from 0
+-type sub_id() :: integer().
+
+%% Message IDs (for acknowledgements) are simple strings. They are
+%% extracted from the 'ack' field of the header in client or client-individual
+%% mode, and from the 'message-id' field in auto mode.
+-type message_id() :: binary().
+
+%% A destination can be a queue, or something else.
+%% Example: <<"/queue/lizards">>
+-type destination() :: binary().
+
+%% A STOMP message as received from a queue subscription
+-record(stomp_msg, { headers :: #{ binary() => binary() },
+                     body    :: binary() }).
+-type stomp_msg() :: #stomp_msg{}.