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authorErlang/OTP <[email protected]>2009-11-20 14:54:40 +0000
committerErlang/OTP <[email protected]>2009-11-20 14:54:40 +0000
commit84adefa331c4159d432d22840663c38f155cd4c1 (patch)
treebff9a9c66adda4df2106dfd0e5c053ab182a12bd /erts/emulator/test/decode_packet_SUITE.erl
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The R13B03 release.OTP_R13B03
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+%%
+%% %CopyrightBegin%
+%%
+%% Copyright Ericsson AB 2008-2009. All Rights Reserved.
+%%
+%% The contents of this file are subject to the Erlang Public License,
+%% Version 1.1, (the "License"); you may not use this file except in
+%% compliance with the License. You should have received a copy of the
+%% Erlang Public License along with this software. If not, it can be
+%% retrieved online at http://www.erlang.org/.
+%%
+%% Software distributed under the License is distributed on an "AS IS"
+%% basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See
+%% the License for the specific language governing rights and limitations
+%% under the License.
+%%
+%% %CopyrightEnd%
+%%
+
+%% Test suite for erlang:decode_packet/3
+
+-module(decode_packet_SUITE).
+
+-include("test_server.hrl").
+
+-export([all/1,init_per_testcase/2,fin_per_testcase/2,
+ basic/1, packet_size/1, neg/1, http/1, line/1, ssl/1]).
+
+all(suite) ->
+ [basic, packet_size, neg, http, line, ssl].
+
+init_per_testcase(Func, Config) when is_atom(Func), is_list(Config) ->
+ Seed = {S1,S2,S3} = now(),
+ random:seed(S1,S2,S3),
+ io:format("*** SEED: ~p ***\n", [Seed]),
+ Dog=?t:timetrap(?t:minutes(1)),
+ [{watchdog, Dog}|Config].
+
+fin_per_testcase(_Func, Config) ->
+ Dog=?config(watchdog, Config),
+ ?t:timetrap_cancel(Dog).
+
+basic(doc) -> [];
+basic(suite) -> [];
+basic(Config) when is_list(Config) ->
+ ?line Packet = <<101,22,203,54,175>>,
+ ?line Rest = <<123,34,0,250>>,
+ ?line Bin = <<Packet/binary,Rest/binary>>,
+ ?line {ok, Bin, <<>>} = decode_pkt(raw,Bin),
+
+ ?line {more, 5+1} = decode_pkt(1,<<5,1,2,3,4>>),
+ ?line {more, 5+2} = decode_pkt(2,<<0,5,1,2,3,4>>),
+ ?line {more, 5+4} = decode_pkt(4,<<0,0,0,5,1,2,3,4>>),
+
+ ?line {more, undefined} = decode_pkt(1,<<>>),
+ ?line {more, undefined} = decode_pkt(2,<<0>>),
+ ?line {more, undefined} = decode_pkt(4,<<0,0,0>>),
+
+ Types = [1,2,4,asn1,sunrm,cdr,fcgi,tpkt,ssl_tls],
+
+ %% Run tests for different header types and bit offsets.
+
+ lists:foreach(fun({Type,Bits})->basic_pack(Type,Packet,Rest,Bits),
+ more_length(Type,Packet,Bits) end,
+ [{T,B} || T<-Types, B<-lists:seq(0,32)]),
+ ok.
+
+basic_pack(Type,Body,Rest,BitOffs) ->
+ ?line {Bin,Unpacked,_} = pack(Type,Body,Rest,BitOffs),
+ ?line {ok, Unpacked, Rest} = decode_pkt(Type,Bin),
+ case Rest of
+ <<>> -> ok;
+ _ ->
+ ?line <<_:1,NRest/bits>> = Rest,
+ basic_pack(Type,Body,NRest,BitOffs)
+ end.
+
+more_length(Type,Body,BitOffs) ->
+ ?line {Bin,_,_} = pack(Type,Body,<<>>,BitOffs),
+ HdrSize = byte_size(Bin) - byte_size(Body),
+ more_length_do(Type,HdrSize,Bin,byte_size(Bin)).
+
+more_length_do(_,_,_,0) ->
+ ok;
+more_length_do(Type,HdrSize,Bin,Size) ->
+ TrySize = (Size*3) div 4,
+ NSize = if TrySize < HdrSize -> Size - 1;
+ true -> TrySize
+ end,
+ {B1,_} = split_binary(Bin,NSize),
+ ?line {more, Length} = decode_pkt(Type,B1),
+ case Length of
+ L when L=:=byte_size(Bin) -> ok;
+ undefined when NSize<HdrSize -> ok
+ end,
+ more_length_do(Type,HdrSize,Bin,NSize).
+
+
+
+pack(Type,Packet,Rest) ->
+ {Bin,Unpacked} = pack(Type,Packet),
+ {<<Bin/binary,Rest/bits>>,Unpacked}.
+
+%pack(0,B,R,Bits) ->
+% pack(raw,B,R,Bits);
+%pack(raw,Body,Rest,BitOffs) ->
+% Orig = <<0:BitOffs,Body/binary,Rest/bits>>,
+% <<_:BitOffs,Bin/bits>> = Orig,
+% {Bin,<<Bin/binary,Rest/bits>>,Orig};
+pack(Type,Body,Rest,BitOffs) ->
+ {Packet,Unpacked} = pack(Type,Body),
+
+ %% Make Bin a sub-bin with an arbitrary bitoffset within Orig
+ Prefix = random:uniform(1 bsl BitOffs) - 1,
+ Orig = <<Prefix:BitOffs,Packet/binary,Rest/bits>>,
+ <<_:BitOffs,Bin/bits>> = Orig,
+ {Bin,Unpacked,Orig}.
+
+pack(1,Bin) ->
+ Psz = byte_size(Bin),
+ {<<Psz:8,Bin/binary>>, Bin};
+pack(2,Bin) ->
+ Psz = byte_size(Bin),
+ {<<Psz:16,Bin/binary>>, Bin};
+pack(4,Bin) ->
+ Psz = byte_size(Bin),
+ {<<Psz:32,Bin/binary>>, Bin};
+pack(asn1,Bin) ->
+ Ident = case random:uniform(3) of
+ 1 -> <<17>>;
+ 2 -> <<16#1f,16#81,17>>;
+ 3 -> <<16#1f,16#81,16#80,16#80,17>>
+ end,
+ Psz = byte_size(Bin),
+ Length = case random:uniform(4) of
+ 1 when Psz < 128 ->
+ <<Psz:8>>;
+ R when R=<2 andalso Psz < 16#10000 ->
+ <<16#82,Psz:16>>;
+ R when R=<3 andalso Psz < 16#1000000 ->
+ <<16#83,Psz:24>>;
+ _ when Psz < 16#100000000 ->
+ <<16#84,Psz:32>>
+ end,
+ Res = <<Ident/binary,Length/binary,Bin/binary>>,
+ {Res,Res};
+pack(sunrm,Bin) ->
+ Psz = byte_size(Bin),
+ Res = if Psz < 16#80000000 ->
+ <<Psz:32,Bin/binary>>
+ end,
+ {Res,Res};
+pack(cdr,Bin) ->
+ GIOP = <<"GIOP">>,
+ Major = random:uniform(256) - 1,
+ Minor = random:uniform(256) - 1,
+ MType = random:uniform(256) - 1,
+ Psz = byte_size(Bin),
+ Res = case random:uniform(2) of
+ 1 -> <<GIOP/binary,Major:8,Minor:8,0:8,MType:8,Psz:32/big,Bin/binary>>;
+ 2 -> <<GIOP/binary,Major:8,Minor:8,1:8,MType:8,Psz:32/little,Bin/binary>>
+ end,
+ {Res,Res};
+pack(fcgi,Bin) ->
+ Ver = 1,
+ Type = random:uniform(256) - 1,
+ Id = random:uniform(65536) - 1,
+ PaddSz = random:uniform(16) - 1,
+ Psz = byte_size(Bin),
+ Reserv = random:uniform(256) - 1,
+ Padd = case PaddSz of
+ 0 -> <<>>;
+ _ -> list_to_binary([random:uniform(256)-1
+ || _<- lists:seq(1,PaddSz)])
+ end,
+ Res = <<Ver:8,Type:8,Id:16,Psz:16/big,PaddSz:8,Reserv:8,Bin/binary>>,
+ {<<Res/binary,Padd/binary>>, Res};
+pack(tpkt,Bin) ->
+ Ver = 3,
+ Reserv = random:uniform(256) - 1,
+ Size = byte_size(Bin) + 4,
+ Res = <<Ver:8,Reserv:8,Size:16,Bin/binary>>,
+ {Res, Res};
+pack(ssl_tls,Bin) ->
+ Content = case (random:uniform(256) - 1) of
+ C when C<128 -> C;
+ _ -> v2hello
+ end,
+ Major = random:uniform(256) - 1,
+ Minor = random:uniform(256) - 1,
+ pack_ssl(Content,Major,Minor,Bin).
+
+pack_ssl(Content, Major, Minor, Body) ->
+ case Content of
+ v2hello ->
+ Size = byte_size(Body),
+ Res = <<1:1,(Size+3):15, 1:8, Major:8, Minor:8, Body/binary>>,
+ C = 22,
+ Data = <<1:8, (Size+2):24, Major:8, Minor:8, Body/binary>>;
+ C when is_integer(C) ->
+ Size = byte_size(Body),
+ Res = <<Content:8, Major:8, Minor:8, Size:16, Body/binary>>,
+ Data = Body
+ end,
+ {Res, {ssl_tls,[],C,{Major,Minor}, Data}}.
+
+
+packet_size(doc) -> [];
+packet_size(suite) -> [];
+packet_size(Config) when is_list(Config) ->
+ ?line Packet = <<101,22,203,54,175>>,
+ ?line Rest = <<123,34,0,250>>,
+
+ F = fun({Type,Max})->
+ ?line {Bin,Unpacked} = pack(Type,Packet,Rest),
+ ?line case decode_pkt(Type,Bin,[{packet_size,Max}]) of
+ {ok,Unpacked,Rest} when Max=:=0; Max>=byte_size(Packet) ->
+ ok;
+ {error,_} when Max<byte_size(Packet), Max=/=0 ->
+ ok;
+ {error,_} when Type=:=fcgi, Max=/=0 ->
+ %% packet includes random amount of padding
+ ok
+ end
+ end,
+ ?line lists:foreach(F, [{T,D} || T<-[1,2,4,asn1,sunrm,cdr,fcgi,tpkt,ssl_tls],
+ D<-lists:seq(0, byte_size(Packet)*2)]),
+
+ %% Test OTP-8102, "negative" 4-byte sizes.
+ lists:foreach(fun(Size) ->
+ ?line {error,_} = decode_pkt(4,<<Size:32,Packet/binary>>)
+ end,
+ lists:seq(-10,-1)),
+ ok.
+
+
+neg(doc) -> [];
+neg(suite) -> [];
+neg(Config) when is_list(Config) ->
+ ?line Bin = <<"dummy">>,
+ Fun = fun()->dummy end,
+
+ BadargF = fun(T,B,Opts)-> {'EXIT',{badarg,_}} = (catch decode_pkt(T,B,Opts)) end,
+
+ %% Invalid Type args
+ lists:foreach(fun(T)-> BadargF(T,Bin,[]) end,
+ [3,-1,5,2.0,{2},unknown,[],"line",Bin,Fun,self()]),
+
+ %% Invalid Bin args
+ lists:foreach(fun(B)-> BadargF(0,B,[]) end,
+ [3,2.0,unknown,[],"Bin",[Bin],{Bin},Fun,self()]),
+
+ %% Invalid options
+ InvOpts = [2,false,self(),Bin,"Options",Fun,
+ packet_size,{packet_size},{packet_size,0,false},
+ {packet_size,-1},{packet_size,100.0},{packet_size,false},
+ {line_length,-1},{line_length,100.0},{line_length,false}],
+
+ lists:foreach(fun(Opt)-> BadargF(0,Bin,Opt),
+ BadargF(0,Bin,[Opt]),
+ BadargF(0,Bin,[Opt,{packet_size,1000}]),
+ BadargF(0,Bin,[{packet_size,1000},Opt]) end,
+ InvOpts),
+ ok.
+
+
+http(doc) -> [];
+http(suite) -> [];
+http(Config) when is_list(Config) ->
+ ?line <<"foo">> = http_do(http_request("foo")),
+ ?line <<" bar">> = http_do(http_request(" bar")),
+ ?line <<"Hello!">> = http_do(http_response("Hello!")),
+
+ %% Test all known header atoms
+ Val = "dummy value",
+ ValB = list_to_binary(Val),
+ Rest = <<"Rest">>,
+ HdrF = fun(Str,N) ->
+ ?line StrA = list_to_atom(Str),
+ ?line StrB = list_to_binary(Str),
+ ?line Bin = <<StrB/binary,": ",ValB/binary,"\r\n",Rest/binary>>,
+ ?line {ok, {http_header,N,StrA,undefined,Val}, Rest} = decode_pkt(httph,Bin),
+ ?line {ok, {http_header,N,StrA,undefined,ValB}, Rest} = decode_pkt(httph_bin,Bin),
+ ?line N + 1
+ end,
+ ?line lists:foldl(HdrF, 1, http_hdr_strings()),
+
+ %% Test all known method atoms
+ MethF = fun(Meth) ->
+ ?line MethA = list_to_atom(Meth),
+ ?line MethB = list_to_binary(Meth),
+ ?line Bin = <<MethB/binary," /invalid/url HTTP/1.0\r\n",Rest/binary>>,
+ ?line {ok, {http_request,MethA,{abs_path,"/invalid/url"},{1,0}},
+ Rest} = decode_pkt(http,Bin),
+ ?line {ok, {http_request,MethA,{abs_path,<<"/invalid/url">>},{1,0}},
+ Rest} = decode_pkt(http_bin,Bin)
+ end,
+ ?line lists:foreach(MethF, http_meth_strings()),
+
+ %% Test all uri variants
+ UriF = fun({Str,ResL,ResB}) ->
+ Bin = <<"GET ",(list_to_binary(Str))/binary," HTTP/1.1\r\n",Rest/binary>>,
+ {ok, {http_request, 'GET', ResL, {1,1}}, Rest} = decode_pkt(http,Bin),
+ {ok, {http_request, 'GET', ResB, {1,1}}, Rest} = decode_pkt(http_bin,Bin)
+ end,
+ lists:foreach(UriF, http_uri_variants()),
+ ok.
+
+http_with_bin(http) ->
+ http_bin;
+http_with_bin(httph) ->
+ httph_bin.
+
+http_do(Tup) ->
+ http_do(Tup,http).
+http_do({Bin, []}, _) ->
+ Bin;
+http_do({Bin,[{_Line,PL,PB}|Tail]}, Type) ->
+ ?line {ok, PL, Rest} = decode_pkt(Type,Bin),
+ ?line {ok, PB, Rest} = decode_pkt(http_with_bin(Type),Bin),
+
+ %% Same tests again but as SubBin
+ PreLen = random:uniform(64),
+ Prefix = random:uniform(1 bsl PreLen) - 1,
+ SufLen = random:uniform(64),
+ Suffix = random:uniform(1 bsl SufLen) - 1,
+ Orig = <<Prefix:PreLen, Bin/bits, Suffix:SufLen>>,
+ BinLen = bit_size(Bin),
+ <<_:PreLen, SubBin:BinLen/bits, _/bits>> = Orig, % Make SubBin
+ ?line SubBin = Bin, % just to make sure
+
+ ?line {ok, PL, Rest} = decode_pkt(Type,SubBin),
+ ?line {ok, PB, Rest} = decode_pkt(http_with_bin(Type),SubBin),
+ http_do({Rest, Tail}, httph).
+
+http_request(Msg) ->
+ QnA = [{"POST /invalid/url HTTP/1.1\r\n",
+ {http_request, 'POST', {abs_path, "/invalid/url" }, {1,1}},
+ {http_request, 'POST', {abs_path,<<"/invalid/url">>}, {1,1}}},
+ {"Connection: close\r\n",
+ {http_header,2,'Connection',undefined, "close"},
+ {http_header,2,'Connection',undefined,<<"close">>}},
+ {"Host\t : localhost:8000\r\n", % white space before :
+ {http_header,14,'Host',undefined, "localhost:8000"},
+ {http_header,14,'Host',undefined,<<"localhost:8000">>}},
+ {"User-Agent: perl post\r\n",
+ {http_header,24,'User-Agent',undefined, "perl post"},
+ {http_header,24,'User-Agent',undefined,<<"perl post">>}},
+ {"Content-Length: 4\r\n",
+ {http_header,38,'Content-Length',undefined, "4"},
+ {http_header,38,'Content-Length',undefined,<<"4">>}},
+ {"Content-Type: text/xml; charset=utf-8\r\n",
+ {http_header,42,'Content-Type',undefined, "text/xml; charset=utf-8"},
+ {http_header,42,'Content-Type',undefined,<<"text/xml; charset=utf-8">>}},
+ {"Other-Field: with some text\r\n",
+ {http_header,0, "Other-Field" ,undefined, "with some text"},
+ {http_header,0,<<"Other-Field">>,undefined,<<"with some text">>}},
+ {"Multi-Line: Once upon a time in a land far far away,\r\n"
+ " there lived a princess imprisoned in the highest tower\r\n"
+ " of the most haunted castle.\r\n",
+ {http_header,0, "Multi-Line" ,undefined, "Once upon a time in a land far far away,\r\n there lived a princess imprisoned in the highest tower\r\n of the most haunted castle."},
+ {http_header,0,<<"Multi-Line">>,undefined,<<"Once upon a time in a land far far away,\r\n there lived a princess imprisoned in the highest tower\r\n of the most haunted castle.">>}},
+ {"\r\n",
+ http_eoh,
+ http_eoh}],
+ Bin = lists:foldl(fun({Line,_,_},Acc) -> LineBin = list_to_binary(Line),
+ <<Acc/binary,LineBin/binary>> end,
+ <<"">>, QnA),
+ MsgBin = list_to_binary(Msg),
+ {<<Bin/binary,MsgBin/binary>>, QnA}.
+
+
+http_response(Msg) ->
+ QnA = [{"HTTP/1.0 404 Object Not Found\r\n",
+ {http_response, {1,0}, 404, "Object Not Found"},
+ {http_response, {1,0}, 404, <<"Object Not Found">>}},
+ {"Server: inets/4.7.16\r\n",
+ {http_header, 30, 'Server', undefined, "inets/4.7.16"},
+ {http_header, 30, 'Server', undefined, <<"inets/4.7.16">>}},
+ {"Date: Fri, 04 Jul 2008 17:16:22 GMT\r\n",
+ {http_header, 3, 'Date', undefined, "Fri, 04 Jul 2008 17:16:22 GMT"},
+ {http_header, 3, 'Date', undefined, <<"Fri, 04 Jul 2008 17:16:22 GMT">>}},
+ {"Content-Type: text/html\r\n",
+ {http_header, 42, 'Content-Type', undefined, "text/html"},
+ {http_header, 42, 'Content-Type', undefined, <<"text/html">>}},
+ {"Content-Length: 207\r\n",
+ {http_header, 38, 'Content-Length', undefined, "207"},
+ {http_header, 38, 'Content-Length', undefined, <<"207">>}},
+ {"\r\n",
+ http_eoh,
+ http_eoh}],
+
+
+
+ Bin = lists:foldl(fun({Line,_,_},Acc) -> LineBin = list_to_binary(Line),
+ <<Acc/binary,LineBin/binary>> end,
+ <<"">>, QnA),
+ MsgBin = list_to_binary(Msg),
+ {<<Bin/binary,MsgBin/binary>>, QnA}.
+
+http_hdr_strings() ->
+ %% Must be correct order
+ ["Cache-Control","Connection","Date","Pragma","Transfer-Encoding",
+ "Upgrade","Via","Accept", "Accept-Charset", "Accept-Encoding",
+ "Accept-Language", "Authorization","From","Host","If-Modified-Since",
+ "If-Match","If-None-Match","If-Range","If-Unmodified-Since","Max-Forwards",
+ "Proxy-Authorization","Range","Referer","User-Agent","Age","Location",
+ "Proxy-Authenticate","Public","Retry-After","Server","Vary","Warning",
+ "Www-Authenticate","Allow","Content-Base","Content-Encoding",
+ "Content-Language","Content-Length","Content-Location","Content-Md5",
+ "Content-Range","Content-Type","Etag","Expires","Last-Modified",
+ "Accept-Ranges","Set-Cookie","Set-Cookie2","X-Forwarded-For","Cookie",
+ "Keep-Alive","Proxy-Connection"].
+
+http_meth_strings() ->
+ ["OPTIONS", "GET", "HEAD", "POST", "PUT", "DELETE", "TRACE"].
+
+http_uri_variants() ->
+ [{"*", '*', '*'},
+ {"http://tools.ietf.org/html/rfc3986",
+ {absoluteURI,http, "tools.ietf.org", undefined, "/html/rfc3986"},
+ {absoluteURI,http,<<"tools.ietf.org">>,undefined,<<"/html/rfc3986">>}},
+ {"http://otp.ericsson.se:8000/product/internal/",
+ {absoluteURI,http, "otp.ericsson.se" ,8000, "/product/internal/"},
+ {absoluteURI,http,<<"otp.ericsson.se">>,8000,<<"/product/internal/">>}},
+ {"https://example.com:8042/over/there?name=ferret#nose",
+ {absoluteURI,https, "example.com", 8042, "/over/there?name=ferret#nose"},
+ {absoluteURI,https,<<"example.com">>,8042,<<"/over/there?name=ferret#nose">>}},
+ {"ftp://cnn.example.com&[email protected]/top_story.htm",
+ {scheme, "ftp", "//cnn.example.com&[email protected]/top_story.htm"},
+ {scheme,<<"ftp">>,<<"//cnn.example.com&[email protected]/top_story.htm">>}},
+ {"/some/absolute/path",
+ {abs_path, "/some/absolute/path"},
+ {abs_path,<<"/some/absolute/path">>}},
+ {"something_else", "something_else", <<"something_else">>}].
+
+
+line(doc) -> [];
+line(suite) -> [];
+line(Config) when is_list(Config) ->
+ Text = <<"POST /invalid/url HTTP/1.1\r\n"
+ "Connection: close\r\n"
+ "Host\t : localhost:8000\r\n"
+ "User-Agent: perl post\r\n"
+ "Content-Length: 4\r\n"
+ "Content-Type: text/xml; charset=utf-8\r\n"
+ "Other-Field: with some text\r\n"
+ "Multi-Line: Once upon a time in a land far far away,\r\n"
+ " there lived a princess imprisoned in the highest tower\r\n"
+ " of the most haunted castle.\r\n"
+ "\r\nThe residue">>,
+
+ lists:foreach(fun(MaxLen) -> line_do(Text,MaxLen) end,
+ [0,7,19,29,37]),
+ ok.
+
+line_do(Bin,MaxLen) ->
+ Res = decode_pkt(line,Bin,[{line_length,MaxLen}]),
+ MyRes = decode_line(Bin,MaxLen),
+ ?line MyRes = Res,
+ case Res of
+ {ok,_,Rest} ->
+ line_do(Rest,MaxLen);
+ {more,undefined} ->
+ ok
+ end.
+
+% Emulates decode_packet(line,Bin,[{line_length,MaxLen}])
+decode_line(Bin,MaxLen) ->
+ ?line case find_in_binary($\n,Bin) of
+ notfound when MaxLen>0 andalso byte_size(Bin) >= MaxLen ->
+ {LineB,Rest} = split_binary(Bin,MaxLen),
+ {ok,LineB,Rest};
+ notfound ->
+ {more,undefined};
+ Pos when MaxLen>0 andalso Pos > MaxLen ->
+ {LineB,Rest} = split_binary(Bin,MaxLen),
+ {ok,LineB,Rest};
+ Pos ->
+ {LineB,Rest} = split_binary(Bin,Pos),
+ {ok,LineB,Rest}
+ end.
+
+find_in_binary(Byte, Bin) ->
+ case string:chr(binary_to_list(Bin),Byte) of
+ 0 -> notfound;
+ P -> P
+ end.
+
+ssl(doc) -> [];
+ssl(suite) -> [];
+ssl(Config) when is_list(Config) ->
+ Major = 34,
+ Minor = 17,
+ Body = <<234,189,73,199,1,32,4,0,254>>,
+ Rest = <<23,123,203,12,234>>,
+
+ F = fun(Content) ->
+ {Packet,Unpacked} = pack_ssl(Content, Major, Minor, Body),
+ Bin = <<Packet/binary,Rest/binary>>,
+ ?line {ok, Unpacked, Rest} = decode_pkt(ssl_tls, Bin)
+ end,
+ F(25),
+ F(v2hello),
+ ok.
+
+decode_pkt(Type,Bin) ->
+ decode_pkt(Type,Bin,[]).
+decode_pkt(Type,Bin,Opts) ->
+ %%io:format("decode_packet(~p,~p,~p)\n",[Type,Bin,Opts]),
+ Res = erlang:decode_packet(Type,Bin,Opts),
+ %%io:format(" -> ~p\n",[Res]),
+ Res.
+