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authorRaimo Niskanen <[email protected]>2016-06-17 10:35:02 +0200
committerRaimo Niskanen <[email protected]>2016-06-17 10:35:02 +0200
commit79e72ea213a7ddc22cbd77102f57be2c9f528645 (patch)
tree29ce99f52cbbffb85b19596ef4258c42c05fead3 /lib/kernel
parentf8d466b82f156e656371ab4c0f5af34217cbd655 (diff)
parenta3626105809abf8be1869f6b0725b6cfa912dedd (diff)
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Merge branch 'raimo/uds-support/OTP-13643'
* raimo/uds-support/OTP-13643: Update test cases after daily builds Return eafnosupport when not supported Add AF_LOCAL test cases Handle 'undefined' in fdopen
Diffstat (limited to 'lib/kernel')
-rw-r--r--lib/kernel/src/inet.erl67
-rw-r--r--lib/kernel/src/local_tcp.erl2
-rw-r--r--lib/kernel/test/gen_tcp_api_SUITE.erl249
-rw-r--r--lib/kernel/test/gen_udp_SUITE.erl157
4 files changed, 429 insertions, 46 deletions
diff --git a/lib/kernel/src/inet.erl b/lib/kernel/src/inet.erl
index 9fc685e728..a91a6ed517 100644
--- a/lib/kernel/src/inet.erl
+++ b/lib/kernel/src/inet.erl
@@ -1344,18 +1344,12 @@ open(FdO, Addr, Port, Opts, Protocol, Family, Type, Module)
case prim_inet:open(Protocol, Family, Type, OpenOpts) of
{ok,S} ->
case prim_inet:setopts(S, Opts) of
+ ok when Addr =:= undefined ->
+ inet_db:register_socket(S, Module),
+ {ok,S};
ok ->
- case
- case Addr of
- undefined ->
- {ok, undefined};
- _ when is_list(Addr) ->
- bindx(S, Addr, Port);
- _ ->
- prim_inet:bind(S, Addr, Port)
- end
- of
- {ok, _} ->
+ case bind(S, Addr, Port) of
+ {ok, _} ->
inet_db:register_socket(S, Module),
{ok,S};
Error ->
@@ -1373,6 +1367,11 @@ open(Fd, Addr, Port, Opts, Protocol, Family, Type, Module)
when is_integer(Fd) ->
fdopen(Fd, Addr, Port, Opts, Protocol, Family, Type, Module).
+bind(S, Addr, Port) when is_list(Addr) ->
+ bindx(S, Addr, Port);
+bind(S, Addr, Port) ->
+ prim_inet:bind(S, Addr, Port).
+
bindx(S, [Addr], Port0) ->
{IP, Port} = set_bindx_port(Addr, Port0),
prim_inet:bind(S, IP, Port);
@@ -1413,34 +1412,36 @@ fdopen(Fd, Opts, Protocol, Family, Type, Module) ->
fdopen(Fd, any, 0, Opts, Protocol, Family, Type, Module).
fdopen(Fd, Addr, Port, Opts, Protocol, Family, Type, Module) ->
- IsAnyAddr = (Addr == {0,0,0,0} orelse Addr == {0,0,0,0,0,0,0,0}
- orelse Addr == any),
- Bound = Port == 0 andalso IsAnyAddr,
+ Bound =
+ %% We do not do any binding if default port+addr options
+ %% were given, in order to keep backwards compatability
+ %% with pre Erlang/OTP 17
+ case Addr of
+ {0,0,0,0} when Port =:= 0 -> true;
+ {0,0,0,0,0,0,0,0} when Port =:= 0 -> true;
+ any when Port =:= 0 -> true;
+ _ -> false
+ end,
case prim_inet:fdopen(Protocol, Family, Type, Fd, Bound) of
{ok, S} ->
case prim_inet:setopts(S, Opts) of
+ ok
+ when Addr =:= undefined;
+ Bound ->
+ inet_db:register_socket(S, Module),
+ {ok, S};
ok ->
- case if
- Bound ->
- %% We do not do any binding if default
- %% port+addr options where given in order
- %% to keep backwards compatability with
- %% pre Erlang/TOP 17
- {ok, ok};
- is_list(Addr) ->
- bindx(S, Addr, Port);
- true ->
- prim_inet:bind(S, Addr, Port)
- end of
- {ok, _} ->
- inet_db:register_socket(S, Module),
- {ok, S};
- Error ->
- prim_inet:close(S),
- Error
+ case bind(S, Addr, Port) of
+ {ok, _} ->
+ inet_db:register_socket(S, Module),
+ {ok, S};
+ Error ->
+ prim_inet:close(S),
+ Error
end;
Error ->
- prim_inet:close(S), Error
+ prim_inet:close(S),
+ Error
end;
Error -> Error
end.
diff --git a/lib/kernel/src/local_tcp.erl b/lib/kernel/src/local_tcp.erl
index e3c67dfbb7..90e0fa2162 100644
--- a/lib/kernel/src/local_tcp.erl
+++ b/lib/kernel/src/local_tcp.erl
@@ -175,4 +175,4 @@ accept(L, Timeout) ->
%% Create a port/socket from a file descriptor
%%
fdopen(Fd, Opts) ->
- inet:fdopen(Fd, Opts, ?PROTO, ?FAMILY, ?TYPE, ?MODULE).
+ inet:open(Fd, undefined, 0, Opts, ?PROTO, ?FAMILY, ?TYPE, ?MODULE).
diff --git a/lib/kernel/test/gen_tcp_api_SUITE.erl b/lib/kernel/test/gen_tcp_api_SUITE.erl
index 54298e6309..026cbf8b28 100644
--- a/lib/kernel/test/gen_tcp_api_SUITE.erl
+++ b/lib/kernel/test/gen_tcp_api_SUITE.erl
@@ -34,7 +34,11 @@
t_recv_timeout/1, t_recv_eof/1, t_recv_delim/1,
t_shutdown_write/1, t_shutdown_both/1, t_shutdown_error/1,
t_shutdown_async/1,
- t_fdopen/1, t_fdconnect/1, t_implicit_inet6/1]).
+ t_fdopen/1, t_fdconnect/1, t_implicit_inet6/1,
+ t_local_basic/1, t_local_unbound/1, t_local_fdopen/1,
+ t_local_fdopen_listen/1, t_local_fdopen_listen_unbound/1,
+ t_local_fdopen_connect/1, t_local_fdopen_connect_unbound/1,
+ t_local_abstract/1]).
-export([getsockfd/0,closesockfd/1]).
@@ -45,12 +49,18 @@ suite() ->
all() ->
[{group, t_accept}, {group, t_connect}, {group, t_recv},
t_shutdown_write, t_shutdown_both, t_shutdown_error,
- t_shutdown_async, t_fdopen, t_fdconnect, t_implicit_inet6].
+ t_shutdown_async, t_fdopen, t_fdconnect, t_implicit_inet6,
+ {group, t_local}].
groups() ->
[{t_accept, [], [t_accept_timeout]},
{t_connect, [], [t_connect_timeout, t_connect_bad]},
- {t_recv, [], [t_recv_timeout, t_recv_eof, t_recv_delim]}].
+ {t_recv, [], [t_recv_timeout, t_recv_eof, t_recv_delim]},
+ {t_local, [],
+ [t_local_basic, t_local_unbound, t_local_fdopen,
+ t_local_fdopen_listen, t_local_fdopen_listen_unbound,
+ t_local_fdopen_connect, t_local_fdopen_connect_unbound,
+ t_local_abstract]}].
@@ -60,17 +70,36 @@ init_per_suite(Config) ->
end_per_suite(_Config) ->
ok.
+init_per_group(t_local, Config) ->
+ case gen_tcp:connect({local,<<"/">>}, 0, []) of
+ {error,eafnosupport} ->
+ {skip, "AF_LOCAL not supported"};
+ {error,_} ->
+ Config
+ end;
init_per_group(_GroupName, Config) ->
Config.
-end_per_group(_,_Config) ->
+end_per_group(t_local, _Config) ->
+ delete_local_filenames();
+end_per_group(_, _Config) ->
ok.
+
+init_per_testcase(Func, Config)
+ when Func =:= undefined -> % Insert your testcase name here
+ dbg:tracer(),
+ dbg:p(self(), c),
+ dbg:tpl(prim_inet, cx),
+ dbg:tpl(local_tcp, cx),
+ dbg:tpl(inet, cx),
+ dbg:tpl(gen_tcp, cx),
+ Config;
init_per_testcase(_Func, Config) ->
Config.
end_per_testcase(_Func, _Config) ->
- ok.
+ dbg:stop().
%%% gen_tcp:accept/1,2
@@ -308,6 +337,192 @@ implicit_inet6(S, Addr) ->
ok = gen_tcp:close(S1).
+
+t_local_basic(_Config) ->
+ SFile = local_filename(server),
+ SAddr = {local,bin_filename(SFile)},
+ CFile = local_filename(client),
+ CAddr = {local,bin_filename(CFile)},
+ _ = file:delete(SFile),
+ _ = file:delete(CFile),
+ %%
+ L =
+ ok(
+ gen_tcp:listen(0, [{ifaddr,{local,SFile}},{active,false}])),
+ C =
+ ok(
+ gen_tcp:connect(
+ {local,SFile}, 0, [{ifaddr,{local,CFile}},{active,false}])),
+ S = ok(gen_tcp:accept(L)),
+ SAddr = ok(inet:sockname(L)),
+ {error,enotconn} = inet:peername(L),
+ local_handshake(S, SAddr, C, CAddr),
+ ok = gen_tcp:close(L),
+ ok = gen_tcp:close(S),
+ ok = gen_tcp:close(C),
+ %%
+ ok = file:delete(SFile),
+ ok = file:delete(CFile),
+ ok.
+
+t_local_unbound(_Config) ->
+ SFile = local_filename(server),
+ SAddr = {local,bin_filename(SFile)},
+ _ = file:delete(SFile),
+ %%
+ L = ok(gen_tcp:listen(0, [{ifaddr,SAddr},{active,false}])),
+ C = ok(gen_tcp:connect(SAddr, 0, [{active,false}])),
+ S = ok(gen_tcp:accept(L)),
+ SAddr = ok(inet:sockname(L)),
+ {error,enotconn} = inet:peername(L),
+ local_handshake(S, SAddr, C, {local,<<>>}),
+ ok = gen_tcp:close(L),
+ ok = gen_tcp:close(S),
+ ok = gen_tcp:close(C),
+ ok = file:delete(SFile),
+ ok.
+
+t_local_fdopen(_Config) ->
+ SFile = local_filename(server),
+ SAddr = {local,bin_filename(SFile)},
+ _ = file:delete(SFile),
+ %%
+ L = ok(gen_tcp:listen(0, [{ifaddr,SAddr},{active,false}])),
+ C0 = ok(gen_tcp:connect(SAddr, 0, [{active,false}])),
+ Fd = ok(prim_inet:getfd(C0)),
+ ok = prim_inet:ignorefd(C0, true),
+ C = ok(gen_tcp:fdopen(Fd, [local])),
+ S = ok(gen_tcp:accept(L)),
+ SAddr = ok(inet:sockname(L)),
+ {error,enotconn} = inet:peername(L),
+ local_handshake(S, SAddr, C, {local,<<>>}),
+ ok = gen_tcp:close(L),
+ ok = gen_tcp:close(S),
+ ok = gen_tcp:close(C),
+ ok = gen_tcp:close(C0),
+ ok = file:delete(SFile),
+ ok.
+
+t_local_fdopen_listen(_Config) ->
+ SFile = local_filename(server),
+ SAddr = {local,bin_filename(SFile)},
+ _ = file:delete(SFile),
+ L0 = ok(gen_tcp:listen(0, [{ifaddr,SAddr},{active,false}])),
+ Fd = ok(prim_inet:getfd(L0)),
+ L = ok(gen_tcp:listen(0, [{fd,Fd},local,{active,false}])),
+ C = ok(gen_tcp:connect(SAddr, 0, [{active,false}])),
+ S = ok(gen_tcp:accept(L)),
+ SAddr = ok(inet:sockname(L)),
+ {error,enotconn} = inet:peername(L),
+ local_handshake(S, SAddr, C, {local,<<>>}),
+ ok = gen_tcp:close(L),
+ ok = gen_tcp:close(L0),
+ ok = gen_tcp:close(S),
+ ok = gen_tcp:close(C),
+ ok = file:delete(SFile),
+ ok.
+
+t_local_fdopen_listen_unbound(_Config) ->
+ SFile = local_filename(server),
+ SAddr = {local,bin_filename(SFile)},
+ _ = file:delete(SFile),
+ P = ok(prim_inet:open(tcp, local, stream)),
+ Fd = ok(prim_inet:getfd(P)),
+ L =
+ ok(gen_tcp:listen(
+ 0, [{fd,Fd},{ifaddr,SAddr},{active,false}])),
+ C = ok(gen_tcp:connect(SAddr, 0, [{active,false}])),
+ S = ok(gen_tcp:accept(L)),
+ SAddr = ok(inet:sockname(L)),
+ {error,enotconn} = inet:peername(L),
+ local_handshake(S, SAddr, C, {local,<<>>}),
+ ok = gen_tcp:close(L),
+ ok = gen_tcp:close(P),
+ ok = gen_tcp:close(S),
+ ok = gen_tcp:close(C),
+ ok = file:delete(SFile),
+ ok.
+
+t_local_fdopen_connect(_Config) ->
+ SFile = local_filename(server),
+ SAddr = {local,bin_filename(SFile)},
+ CFile = local_filename(client),
+ CAddr = {local,bin_filename(CFile)},
+ _ = file:delete(SFile),
+ _ = file:delete(CFile),
+ L = ok(gen_tcp:listen(0, [{ifaddr,SAddr},{active,false}])),
+ P = ok(prim_inet:open(tcp, local, stream)),
+ Fd = ok(prim_inet:getfd(P)),
+ C =
+ ok(gen_tcp:connect(
+ SAddr, 0, [{fd,Fd},{ifaddr,CAddr},{active,false}])),
+ S = ok(gen_tcp:accept(L)),
+ SAddr = ok(inet:sockname(L)),
+ {error,enotconn} = inet:peername(L),
+ local_handshake(S, SAddr, C, CAddr),
+ ok = gen_tcp:close(L),
+ ok = gen_tcp:close(S),
+ ok = gen_tcp:close(C),
+ ok = gen_tcp:close(P),
+ ok = file:delete(SFile),
+ ok.
+
+t_local_fdopen_connect_unbound(_Config) ->
+ SFile = local_filename(server),
+ SAddr = {local,bin_filename(SFile)},
+ _ = file:delete(SFile),
+ L = ok(gen_tcp:listen(0, [{ifaddr,SAddr},{active,false}])),
+ P = ok(prim_inet:open(tcp, local, stream)),
+ Fd = ok(prim_inet:getfd(P)),
+ C = ok(gen_tcp:connect(SAddr, 0, [{fd,Fd},{active,false}])),
+ S = ok(gen_tcp:accept(L)),
+ SAddr = ok(inet:sockname(L)),
+ {error,enotconn} = inet:peername(L),
+ local_handshake(S, SAddr, C, {local,<<>>}),
+ ok = gen_tcp:close(L),
+ ok = gen_tcp:close(S),
+ ok = gen_tcp:close(C),
+ ok = gen_tcp:close(P),
+ ok = file:delete(SFile),
+ ok.
+
+t_local_abstract(_Config) ->
+ case os:type() of
+ {unix,linux} ->
+ AbstAddr = {local,<<>>},
+ L =
+ ok(gen_tcp:listen(
+ 0, [{ifaddr,AbstAddr},{active,false}])),
+ {local,_} = SAddr = ok(inet:sockname(L)),
+ C =
+ ok(gen_tcp:connect(
+ SAddr, 0, [{ifaddr,AbstAddr},{active,false}])),
+ {local,_} = CAddr = ok(inet:sockname(C)),
+ S = ok(gen_tcp:accept(L)),
+ {error,enotconn} = inet:peername(L),
+ local_handshake(S, SAddr, C, CAddr),
+ ok = gen_tcp:close(L),
+ ok = gen_tcp:close(S),
+ ok = gen_tcp:close(C),
+ ok;
+ _ ->
+ {skip,"AF_LOCAL Abstract Addresses only supported on Linux"}
+ end.
+
+
+local_handshake(S, SAddr, C, CAddr) ->
+ SData = "9876543210",
+ CData = "0123456789",
+ SAddr = ok(inet:sockname(S)),
+ CAddr = ok(inet:sockname(C)),
+ CAddr = ok(inet:peername(S)),
+ SAddr = ok(inet:peername(C)),
+ ok = gen_tcp:send(C, CData),
+ ok = gen_tcp:send(S, SData),
+ CData = ok(gen_tcp:recv(S, length(CData))),
+ SData = ok(gen_tcp:recv(C, length(SData))),
+ ok.
+
%%% Utilities
%% Calls M:F/length(A), which should return a timeout error, and complete
@@ -369,8 +584,28 @@ unused_ip(A, B, C, D) ->
{error, _} -> {ok, {A, B, C, D}}
end.
-ok({ok,V}) -> V.
-
+ok({ok,V}) -> V;
+ok(NotOk) ->
+ try throw(not_ok)
+ catch
+ Thrown ->
+ erlang:raise(
+ error, {Thrown, NotOk}, tl(erlang:get_stacktrace()))
+ end.
getsockfd() -> undefined.
closesockfd(_FD) -> undefined.
+
+local_filename(Tag) ->
+ "/tmp/" ?MODULE_STRING "_" ++ os:getpid() ++ "_" ++ atom_to_list(Tag).
+
+bin_filename(String) ->
+ unicode:characters_to_binary(String, file:native_name_encoding()).
+
+delete_local_filenames() ->
+ _ =
+ [file:delete(F) ||
+ F <-
+ filelib:wildcard(
+ "/tmp/" ?MODULE_STRING "_" ++ os:getpid() ++ "_*")],
+ ok.
diff --git a/lib/kernel/test/gen_udp_SUITE.erl b/lib/kernel/test/gen_udp_SUITE.erl
index 44539bf44c..db4e174374 100644
--- a/lib/kernel/test/gen_udp_SUITE.erl
+++ b/lib/kernel/test/gen_udp_SUITE.erl
@@ -35,7 +35,9 @@
-export([send_to_closed/1, active_n/1,
buffer_size/1, binary_passive_recv/1, bad_address/1,
- read_packets/1, open_fd/1, connect/1, implicit_inet6/1]).
+ read_packets/1, open_fd/1, connect/1, implicit_inet6/1,
+ local_basic/1, local_unbound/1,
+ local_fdopen/1, local_fdopen_unbound/1, local_abstract/1]).
suite() ->
[{ct_hooks,[ts_install_cth]},
@@ -44,10 +46,13 @@ suite() ->
all() ->
[send_to_closed, buffer_size, binary_passive_recv,
bad_address, read_packets, open_fd, connect,
- implicit_inet6, active_n].
+ implicit_inet6, active_n,
+ {group, local}].
groups() ->
- [].
+ [{local, [],
+ [local_basic, local_unbound,
+ local_fdopen, local_fdopen_unbound, local_abstract]}].
init_per_suite(Config) ->
Config.
@@ -55,9 +60,19 @@ init_per_suite(Config) ->
end_per_suite(_Config) ->
ok.
+init_per_group(local, Config) ->
+ case gen_udp:open(0, [local]) of
+ {ok,S} ->
+ ok = gen_udp:close(S),
+ Config;
+ {error,eafnosupport} ->
+ {skip, "AF_LOCAL not supported"}
+ end;
init_per_group(_GroupName, Config) ->
Config.
+end_per_group(local, _Config) ->
+ delete_local_filenames();
end_per_group(_GroupName, Config) ->
Config.
@@ -65,7 +80,7 @@ end_per_group(_GroupName, Config) ->
init_per_testcase(_Case, Config) ->
Config.
-end_per_testcase(_Case, Config) ->
+end_per_testcase(_Case, _Config) ->
ok.
%%-------------------------------------------------------------
@@ -550,6 +565,116 @@ active_n(Config) when is_list(Config) ->
ok = gen_udp:close(S1),
ok.
+
+local_basic(_Config) ->
+ SFile = local_filename(server),
+ SAddr = {local,bin_filename(SFile)},
+ CFile = local_filename(client),
+ CAddr = {local,bin_filename(CFile)},
+ _ = file:delete(SFile),
+ _ = file:delete(CFile),
+ %%
+ S = ok(gen_udp:open(0, [{ifaddr,{local,SFile}},{active,false}])),
+ C = ok(gen_udp:open(0, [{ifaddr,{local,CFile}},{active,false}])),
+ SAddr = ok(inet:sockname(S)),
+ CAddr = ok(inet:sockname(C)),
+ local_handshake(S, SAddr, C, CAddr),
+ ok = gen_udp:close(S),
+ ok = gen_udp:close(C),
+ %%
+ ok = file:delete(SFile),
+ ok = file:delete(CFile),
+ ok.
+
+local_unbound(_Config) ->
+ SFile = local_filename(server),
+ SAddr = {local,bin_filename(SFile)},
+ _ = file:delete(SFile),
+ %%
+ S = ok(gen_udp:open(0, [{ifaddr,SAddr},{active,false}])),
+ C = ok(gen_udp:open(0, [local,{active,false}])),
+ SAddr = ok(inet:sockname(S)),
+ local_handshake(S, SAddr, C, undefined),
+ ok = gen_udp:close(S),
+ ok = gen_udp:close(C),
+ %%
+ ok = file:delete(SFile),
+ ok.
+
+local_fdopen(_Config) ->
+ SFile = local_filename(server),
+ SAddr = {local,bin_filename(SFile)},
+ CFile = local_filename(client),
+ CAddr = {local,bin_filename(CFile)},
+ _ = file:delete(SFile),
+ _ = file:delete(CFile),
+ %%
+ S0 = ok(gen_udp:open(0, [{ifaddr,SAddr},{active,false}])),
+ C = ok(gen_udp:open(0, [{ifaddr,{local,CFile}},{active,false}])),
+ SAddr = ok(inet:sockname(S0)),
+ CAddr = ok(inet:sockname(C)),
+ Fd = ok(prim_inet:getfd(S0)),
+ S = ok(gen_udp:open(0, [{fd,Fd},local,{active,false}])),
+ SAddr = ok(inet:sockname(S)),
+ local_handshake(S, SAddr, C, CAddr),
+ ok = gen_udp:close(S),
+ ok = gen_udp:close(S0),
+ ok = gen_udp:close(C),
+ %%
+ ok = file:delete(SFile),
+ ok = file:delete(CFile),
+ ok.
+
+local_fdopen_unbound(_Config) ->
+ SFile = local_filename(server),
+ SAddr = {local,bin_filename(SFile)},
+ _ = file:delete(SFile),
+ %%
+ S = ok(gen_udp:open(0, [{ifaddr,SAddr},{active,false}])),
+ C0 = ok(gen_udp:open(0, [local,{active,false}])),
+ SAddr = ok(inet:sockname(S)),
+ Fd = ok(prim_inet:getfd(C0)),
+ C = ok(gen_udp:open(0, [{fd,Fd},local,{active,false}])),
+ local_handshake(S, SAddr, C, undefined),
+ ok = gen_udp:close(S),
+ ok = gen_udp:close(C),
+ ok = gen_udp:close(C0),
+ %%
+ ok = file:delete(SFile),
+ ok.
+
+local_abstract(_Config) ->
+ case os:type() of
+ {unix,linux} ->
+ S = ok(gen_udp:open(0, [{ifaddr,{local,<<>>}},{active,false}])),
+ C = ok(gen_udp:open(0, [{ifaddr,{local,<<>>}},{active,false}])),
+ {local,_} = SAddr = ok(inet:sockname(S)),
+ {local,_} = CAddr = ok(inet:sockname(C)),
+ local_handshake(S, SAddr, C, CAddr),
+ ok = gen_udp:close(S),
+ ok = gen_udp:close(C),
+ ok;
+ _ ->
+ {skip,"AF_LOCAL Abstract Addresses only supported on Linux"}
+ end.
+
+
+local_handshake(S, SAddr, C, CAddr) ->
+ SData = "9876543210",
+ CData = "0123456789",
+ ok = gen_udp:send(C, SAddr, 0, CData),
+ case ok(gen_tcp:recv(S, 112)) of
+ {{unspec,<<>>}, 0, CData} when CAddr =:= undefined ->
+ ok;
+ {{local,<<>>}, 0, CData} when CAddr =:= undefined ->
+ ok;
+ {CAddr, 0, CData} when CAddr =/= undefined ->
+ ok = gen_udp:send(S, CAddr, 0, SData),
+ {SAddr, 0, SData} = ok(gen_tcp:recv(C, 112)),
+ ok
+
+ end.
+
%%
%% Utils
%%
@@ -630,4 +755,26 @@ implicit_inet6(S1, Active, Addr) ->
{Addr,P2,"pong"} = ok(gen_udp:recv(S1, 1024)),
ok = gen_udp:close(S2).
-ok({ok,V}) -> V.
+ok({ok,V}) -> V;
+ok(NotOk) ->
+ try throw(not_ok)
+ catch
+ Thrown ->
+ erlang:raise(
+ error, {Thrown, NotOk}, tl(erlang:get_stacktrace()))
+ end.
+
+
+local_filename(Tag) ->
+ "/tmp/" ?MODULE_STRING "_" ++ os:getpid() ++ "_" ++ atom_to_list(Tag).
+
+bin_filename(String) ->
+ unicode:characters_to_binary(String, file:native_name_encoding()).
+
+delete_local_filenames() ->
+ _ =
+ [file:delete(F) ||
+ F <-
+ filelib:wildcard(
+ "/tmp/" ?MODULE_STRING "_" ++ os:getpid() ++ "_*")],
+ ok.