%% Copyright (c) 2012-2023, Michael Santos <michael.santos@gmail.com>
%% All rights reserved.
%%
%% Redistribution and use in source and binary forms, with or without
%% modification, are permitted provided that the following conditions
%% are met:
%%
%% Redistributions of source code must retain the above copyright
%% notice, this list of conditions and the following disclaimer.
%%
%% Redistributions in binary form must reproduce the above copyright
%% notice, this list of conditions and the following disclaimer in the
%% documentation and/or other materials provided with the distribution.
%%
%% Neither the name of the author nor the names of its contributors
%% may be used to endorse or promote products derived from this software
%% without specific prior written permission.
%%
%% THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
%% "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
%% LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
%% FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
%% COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
%% INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
%% BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
%% LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
%% CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
%% LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
%% ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
%% POSSIBILITY OF SUCH DAMAGE.
-define(IPPROTO_IPV6, 41).

-define(PROPLIST_TO_RECORD(Record), fun(Proplist) ->
    Fields = record_info(fields, Record),
    [Tag | Values] = tuple_to_list(#Record{}),
    Defaults = lists:zip(Fields, Values),
    L = lists:map(fun({K, V}) -> proplists:get_value(K, Proplist, V) end, Defaults),
    list_to_tuple([Tag | L])
end).

-record(sut_state, {
    ifname = <<"sut-ipv6">> :: binary(),
    serverv4 = {127, 0, 0, 1} :: string() | inet:ip4_address(),
    clientv4 = {127, 0, 0, 1} :: string() | inet:ip4_address(),
    clientv6 = {0, 0, 0, 0, 0, 0, 0, 1} :: string() | inet:ip6_address(),

    filter_out = fun(_Packet, _State) -> ok end :: sut:filter(),
    filter_in = fun(_Packet, _State) -> ok end :: sut:filter(),

    error_out = fun
        (ok) -> ok;
        (Error) -> Error
    end :: sut:errorfun(),
    error_in = fun
        (ok) -> ok;
        (Error) -> Error
    end :: sut:errorfun(),

    s :: undefined | inet:socket(),
    fd :: undefined | integer(),
    dev :: undefined | pid()
}).