diff options
Diffstat (limited to 'erts/preloaded/src/net.erl')
| -rw-r--r-- | erts/preloaded/src/net.erl | 21 |
1 files changed, 19 insertions, 2 deletions
diff --git a/erts/preloaded/src/net.erl b/erts/preloaded/src/net.erl index a24b5c8ce3..13d2e3a117 100644 --- a/erts/preloaded/src/net.erl +++ b/erts/preloaded/src/net.erl @@ -1,7 +1,7 @@ %% %% %CopyrightBegin% %% -%% Copyright Ericsson AB 2018-2018. All Rights Reserved. +%% Copyright Ericsson AB 2018-2019. All Rights Reserved. %% %% Licensed under the Apache License, Version 2.0 (the "License"); %% you may not use this file except in compliance with the License. @@ -178,12 +178,28 @@ getnameinfo(SockAddr, [] = _Flags) -> getnameinfo(#{family := Fam, addr := _Addr} = SockAddr, Flags) when ((Fam =:= inet) orelse (Fam =:= inet6)) andalso (is_list(Flags) orelse (Flags =:= undefined)) -> - nif_getnameinfo(socket:ensure_sockaddr(SockAddr), Flags); + nif_getnameinfo((catch ensure_sockaddr(SockAddr)), Flags); getnameinfo(#{family := Fam, path := _Path} = SockAddr, Flags) when (Fam =:= local) andalso (is_list(Flags) orelse (Flags =:= undefined)) -> nif_getnameinfo(SockAddr, Flags). +%% This function is intended to "handle" the case when the user +%% has built their (OTP) system with "--disable-esock". +%% That means the socket module does not exist. This is not really +%% a problem since the nif_getnameinfo won't work either (since +%% the nif file is not part of the system). The result of calling +%% getnameinfo will be a undef exception (erlang:nif_error(undef)). +%% +%% The only functions in this module that actually work in this case +%% (--disable-esock) is the depricated stuff (call, cast, ...). +%% +ensure_sockaddr(SockAddr) -> + try socket:ensure_sockaddr(SockAddr) + catch + error:undef:_ -> + undefined + end. %% =========================================================================== %% @@ -334,3 +350,4 @@ nif_if_index2name(_Id) -> nif_if_names() -> erlang:nif_error(undef). + |