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macula
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4.4.5
4.4.4
4.4.3
4.4.2
4.4.1
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3.16.0
3.15.3
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0.48.6
0.48.5
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0.42.9
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0.40.1
0.40.0
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0.34.1
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0.31.2
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0.30.10
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0.30.2
0.30.1
0.30.0
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0.28.3
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0.28.1
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0.27.1
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0.24.2
0.24.1
0.24.0
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0.22.12
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0.8.25
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0.3.3
0.3.2
0.3.1
Macula HTTP/3 Mesh SDK — connect, subscribe, publish, call, advertise
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Files
src/macula_peering.erl
%% @doc Macula peering — connection state machine API.
%%
%% Each peer connection is one `macula_peering_conn' gen_statem under the
%% `macula_peering_conn_sup' simple_one_for_one supervisor.
%%
%% Two entry points:
%% <ul>
%% <li>`connect/1' — outbound dial; worker drives the QUIC connect.</li>
%% <li>`accept/2' — inbound; caller transfers ownership of an
%% already-established `macula_quic' connection (a `reference()')
%% to a new worker.</li>
%% </ul>
%%
%% The caller passes a `controlling_pid' in opts; that pid receives
%% peering events as messages:
%% <ul>
%% <li>`{macula_peering, connected, ConnPid, PeerNodeId}'</li>
%% <li>`{macula_peering, frame, ConnPid, Frame}' (post-handshake)</li>
%% <li>`{macula_peering, disconnected, ConnPid, Reason}'</li>
%% </ul>
-module(macula_peering).
-export([
connect/1,
accept/2,
close/1, close/2,
send_frame/2
]).
-type opts() :: macula_peering_conn:opts().
-export_type([opts/0]).
%%------------------------------------------------------------------
%% Public API
%%------------------------------------------------------------------
%% @doc Outbound connect. Spawns a worker that opens a QUIC connection to
%% `target' and runs the CONNECT/HELLO handshake.
-spec connect(opts()) -> {ok, pid()} | {error, term()}.
connect(Opts) ->
macula_peering_conn_sup:start_conn(Opts#{role => client}).
%% @doc Inbound accept. Caller currently owns `Conn' (e.g. it's the listener
%% owner that just received `{quic, new_conn, Conn, _}'). The transfer of
%% ownership and the handshake start are sequenced atomically.
-spec accept(reference(), opts()) ->
{ok, pid()} | {error, term()}.
accept(Conn, Opts) ->
start_server_worker(Conn, Opts#{role => server, quic_conn => Conn}).
start_server_worker(Conn, Opts) ->
handle_started(macula_peering_conn_sup:start_conn(Opts), Conn).
handle_started({ok, Pid}, Conn) ->
ok = macula_quic:controlling_process(Conn, Pid),
ok = gen_statem:cast(Pid, start_handshake),
{ok, Pid};
handle_started(Err, _Conn) ->
Err.
%% @doc Initiate a graceful close (sends GOODBYE, drains 5s, terminates).
-spec close(pid()) -> ok.
close(Pid) ->
close(Pid, operator_stop).
-spec close(pid(), atom()) -> ok.
close(Pid, Reason) ->
gen_statem:cast(Pid, {close, Reason}).
%% @doc Send a frame through the peer connection. Signs the frame with
%% the local identity if it isn't already signed. Fire-and-forget.
-spec send_frame(pid(), macula_frame:frame()) -> ok.
send_frame(Pid, Frame) when is_map(Frame) ->
gen_statem:cast(Pid, {send_frame, Frame}).