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Allow mixed IPv4 and IPv6 addresses to sctp_bindx

Also allow mixed address families to bind, since the first address on
a multihomed sctp socket must be bound with bind, while the rest are
to be bound using sctp_bindx.

At least Linux supports adding address of mixing families.

Make inet_set_faddress function available also when HAVE_SCTP is not
defined, since we use it to find an address for bind to be able to mix
ipv4 and ipv6 addresses.
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1 parent 2e3852b commit 87570500f821c4aaeafa18705b3a4a479f5d9baa @tomas-abrahamsson tomas-abrahamsson committed May 10, 2012
@@ -3753,7 +3753,7 @@ static char* inet_set_address(int family, inet_address* dst,
#endif
return NULL;
}
-#ifdef HAVE_SCTP
+
/*
** Set an inaddr structure, address family comes from source data,
** or from argument if source data specifies constant address.
@@ -3839,7 +3839,7 @@ static char *inet_set_faddress(int family, inet_address* dst,
}
return inet_set_address(family, dst, src, len);
}
-#endif /* HAVE_SCTP */
+
/* Get a inaddr structure
** src = inaddr structure
@@ -7804,7 +7804,7 @@ static ErlDrvSSizeT inet_ctl(inet_descriptor* desc, int cmd, char* buf,
if (desc->state != INET_STATE_OPEN)
return ctl_xerror(EXBADPORT, rbuf, rsize);
- if (inet_set_address(desc->sfamily, &local, buf, &len) == NULL)
+ if (inet_set_faddress(desc->sfamily, &local, buf, &len) == NULL)
return ctl_error(EINVAL, rbuf, rsize);
if (IS_SOCKET_ERROR(sock_bind(desc->s,(struct sockaddr*) &local, len)))
@@ -10189,10 +10189,9 @@ static ErlDrvSSizeT packet_inet_ctl(ErlDrvData e, unsigned int cmd, char* buf,
while (curr < buf+len)
{
- /* List item format: Port(2), IP(4|16) -- compatible with
- "inet_set_address": */
+ /* List item format: see "inet_set_faddress": */
ErlDrvSizeT alen = buf + len - curr;
- curr = inet_set_address(desc->sfamily, &addr, curr, &alen);
+ curr = inet_set_faddress(desc->sfamily, &addr, curr, &alen);
if (curr == NULL)
return ctl_error(EINVAL, rbuf, rsize);
Binary file not shown.
@@ -184,7 +184,7 @@ close_pend_loop(S, N) ->
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
bind(S,IP,Port) when is_port(S), is_integer(Port), Port >= 0, Port =< 65535 ->
- case ctl_cmd(S,?INET_REQ_BIND,[?int16(Port),ip_to_bytes(IP)]) of
+ case ctl_cmd(S,?INET_REQ_BIND,enc_value(set, addr, {IP,Port})) of
{ok, [P1,P0]} -> {ok, ?u16(P1, P0)};
{error,_}=Error -> Error
end;
@@ -206,10 +206,10 @@ bindx(S, AddFlag, Addrs) ->
case getprotocol(S) of
sctp ->
%% Really multi-homed "bindx". Stringified args:
- %% [AddFlag, (Port, IP)+]:
+ %% [AddFlag, (AddrBytes see enc_value_2(addr,X))+]:
Args =
[?int8(AddFlag)|
- [[?int16(Port)|ip_to_bytes(IP)] ||
+ [enc_value(set, addr, {IP,Port}) ||
{IP, Port} <- Addrs]],
case ctl_cmd(S, ?SCTP_REQ_BINDX, Args) of
{ok,_} -> {ok, S};
@@ -32,15 +32,21 @@
api_open_close/1,api_listen/1,api_connect_init/1,api_opts/1,
xfer_min/1,xfer_active/1,def_sndrcvinfo/1,implicit_inet6/1,
basic_stream/1, xfer_stream_min/1, peeloff/1, buffers/1,
- open_multihoming_ipv4_socket/1, open_multihoming_ipv6_socket/1]).
+ open_multihoming_ipv4_socket/1,
+ open_unihoming_ipv6_socket/1,
+ open_multihoming_ipv6_socket/1,
+ open_multihoming_ipv4_and_ipv6_socket/1]).
suite() -> [{ct_hooks,[ts_install_cth]}].
all() ->
[basic, api_open_close, api_listen, api_connect_init,
api_opts, xfer_min, xfer_active, def_sndrcvinfo, implicit_inet6,
basic_stream, xfer_stream_min, peeloff, buffers,
- open_multihoming_ipv4_socket, open_multihoming_ipv6_socket].
+ open_multihoming_ipv4_socket,
+ open_unihoming_ipv6_socket,
+ open_multihoming_ipv6_socket,
+ open_multihoming_ipv4_and_ipv6_socket].
groups() ->
[].
@@ -1114,45 +1120,119 @@ open_multihoming_ipv4_socket(doc) ->
open_multihoming_ipv4_socket(suite) ->
[];
open_multihoming_ipv4_socket(Config) when is_list(Config) ->
- ?line IfAddrs = ok(inet:getifaddrs()),
- ?line
- case filter_addrs_by_family(IfAddrs, inet) of
- [Addr1, Addr2 | _] ->
- ?line io:format("using ipv4 addresses ~p and ~p~n",
- [Addr1, Addr2]),
- ?line S = ok(gen_sctp:open(0, [{ip,Addr1},{ip,Addr2},inet])),
- ?line ok = gen_sctp:listen(S, true),
- ?line setup_connection(S, Addr1, inet),
- ?line ok = gen_sctp:close(S);
- X ->
- {skip, f("Need 2 IPv4 addresses, found only ~p", [X])}
- end.
+ ?line case get_addrs_by_family(inet, 2) of
+ {ok, [Addr1, Addr2]} ->
+ ?line do_open_and_connect([Addr1, Addr2], Addr1);
+ {error, Reason} ->
+ {skip, Reason}
+ end.
+
+open_unihoming_ipv6_socket(doc) ->
+ %% This test is mostly aimed to indicate
+ %% whether host has a non-working ipv6 setup
+ "Test opening a unihoming (non-multihoming) ipv6 socket";
+open_unihoming_ipv6_socket(suite) ->
+ [];
+open_unihoming_ipv6_socket(Config) when is_list(Config) ->
+ ?line case get_addrs_by_family(inet6, 1) of
+ {ok, [Addr]} ->
+ ?line do_open_and_connect([Addr], Addr);
+ {error, Reason} ->
+ {skip, Reason}
+ end.
+
open_multihoming_ipv6_socket(doc) ->
"Test opening a multihoming ipv6 socket";
open_multihoming_ipv6_socket(suite) ->
[];
open_multihoming_ipv6_socket(Config) when is_list(Config) ->
- ?line IfAddrs = ok(inet:getifaddrs()),
+ ?line case get_addrs_by_family(inet6, 2) of
+ {ok, [Addr1, Addr2]} ->
+ ?line do_open_and_connect([Addr1, Addr2], Addr1);
+ {error, Reason} ->
+ {skip, Reason}
+ end.
+
+open_multihoming_ipv4_and_ipv6_socket(doc) ->
+ "Test opening a multihoming ipv6 socket with ipv4 and ipv6 addresses";
+open_multihoming_ipv4_and_ipv6_socket(suite) ->
+ [];
+open_multihoming_ipv4_and_ipv6_socket(Config) when is_list(Config) ->
+ ?line case get_addrs_by_family(inet_and_inet6, 2) of
+ {ok, [[InetAddr1, InetAddr2], [Inet6Addr1, Inet6Addr2]]} ->
+ %% Connect to the first address to test bind
+ ?line do_open_and_connect([InetAddr1, Inet6Addr1, InetAddr2],
+ InetAddr1),
+ ?line do_open_and_connect([Inet6Addr1, InetAddr1],
+ Inet6Addr1),
+
+ %% Connect an address, not the first,
+ %% to test sctp_bindx
+ ?line do_open_and_connect([Inet6Addr1, Inet6Addr2, InetAddr1],
+ Inet6Addr2),
+ ?line do_open_and_connect([Inet6Addr1, Inet6Addr2, InetAddr1],
+ InetAddr1);
+ {error, Reason} ->
+ {skip, Reason}
+ end.
+
+
+get_addrs_by_family(Family, NumAddrs) ->
+ case os:type() of
+ {unix,linux} ->
+ get_addrs_by_family_aux(Family, NumAddrs);
+ {unix,freebsd} ->
+ get_addrs_by_family_aux(Family, NumAddrs);
+ {unix,sunos} ->
+ case get_addrs_by_family_aux(Family, NumAddrs) of
+ {ok, [InetAddrs, Inet6Addrs]} when Family =:= inet_and_inet6 ->
+ %% Man page for sctp_bindx on Solaris says: "If sock is an
+ %% Internet Protocol Version 6 (IPv6) socket, addrs should
+ %% be an array of sockaddr_in6 structures containing IPv6
+ %% or IPv4-mapped IPv6 addresses."
+ {ok, [ipv4_map_addrs(InetAddrs), Inet6Addrs]};
+ {ok, Addrs} ->
+ {ok, Addrs};
+ {error, Reason} ->
+ {error, Reason}
+ end;
+ Os ->
+ Reason = if Family =:= inet_and_inet6 ->
+ f("Mixing ipv4 and ipv6 addresses for multihoming "
+ " has not been verified on ~p", [Os]);
+ true ->
+ f("Multihoming for ~p has not been verified on ~p",
+ [Family, Os])
+ end,
+ {error, Reason}
+ end.
+
+get_addrs_by_family_aux(Family, NumAddrs) when Family =:= inet;
+ Family =:= inet6 ->
?line
- case inet:getaddr(localhost, inet6) of
+ case inet:getaddr(localhost, Family) of
{error,eafnosupport} ->
- {skip, "No IPv6 support"};
+ {skip, f("No support for ~p", Family)};
{ok, _} ->
- ?line
- case filter_addrs_by_family(IfAddrs, inet6) of
- [Addr1, Addr2 | _] ->
- ?line io:format("using ipv6 addresses ~p and ~p~n",
- [Addr1, Addr2]),
- ?line S = ok(gen_sctp:open(
- 0, [{ip,Addr1},{ip,Addr2}, inet6])),
- ?line ok = gen_sctp:listen(S, true),
- ?line setup_connection(S, Addr1, inet6),
- ?line ok = gen_sctp:close(S);
- X ->
- {skip, f("Need 2 IPv6 addresses, found ~p", [X])}
- end
- end.
+ ?line IfAddrs = ok(inet:getifaddrs()),
+ ?line case filter_addrs_by_family(IfAddrs, Family) of
+ Addrs when length(Addrs) >= NumAddrs ->
+ {ok, lists:sublist(Addrs, NumAddrs)};
+ [] ->
+ {error, f("Need ~p ~p address(es) found none~n",
+ [NumAddrs, Family])};
+ Addrs ->
+ {error,
+ f("Need ~p ~p address(es) found only ~p: ~p~n",
+ [NumAddrs, Family, length(Addrs), Addrs])}
+ end
+ end;
+get_addrs_by_family_aux(inet_and_inet6, NumAddrs) ->
+ ?line catch {ok, [case get_addrs_by_family_aux(Family, NumAddrs) of
+ {ok, Addrs} -> Addrs;
+ {error, Reason} -> throw({error, Reason})
+ end || Family <- [inet, inet6]]}.
filter_addrs_by_family(IfAddrs, Family) ->
lists:flatten([[Addr || {addr, Addr} <- Info,
@@ -1170,27 +1250,54 @@ is_good_addr(Addr, inet6) when tuple_size(Addr) =:= 8 ->
is_good_addr(_Addr, _Family) ->
false.
+ipv4_map_addrs(InetAddrs) ->
+ [begin
+ <<AB:16>> = <<A,B>>,
+ <<CD:16>> = <<C,D>>,
+ {0, 0, 0, 0, 0, 16#ffff, AB, CD}
+ end || {A,B,C,D} <- InetAddrs].
+
f(F, A) ->
lists:flatten(io_lib:format(F, A)).
-setup_connection(S1, Addr, IpFamily) ->
+do_open_and_connect(ServerAddresses, AddressToConnectTo) ->
+ ?line ServerFamily = get_family_by_addrs(ServerAddresses),
+ ?line io:format("Serving ~p addresses: ~p~n",
+ [ServerFamily, ServerAddresses]),
+ ?line S1 = ok(gen_sctp:open(0, [{ip,Addr} || Addr <- ServerAddresses] ++
+ [ServerFamily])),
+ ?line ok = gen_sctp:listen(S1, true),
?line P1 = ok(inet:port(S1)),
- ?line S2 = ok(gen_sctp:open(0, [IpFamily])),
- ?line P2 = ok(inet:port(S2)),
+ ?line ClientFamily = get_family_by_addr(AddressToConnectTo),
+ ?line io:format("Connecting to ~p ~p~n",
+ [ClientFamily, AddressToConnectTo]),
+ ?line S2 = ok(gen_sctp:open(0, [ClientFamily])),
+ %% Verify client can connect
?line #sctp_assoc_change{state=comm_up} =
- ok(gen_sctp:connect(S2, Addr, P1, [])),
- ?line case ok(gen_sctp:recv(S1)) of
- {Addr,P2,_,#sctp_assoc_change{state=comm_up}} ->
- ok;
- {Addr,P2,_,#sctp_paddr_change{state=addr_confirmed,
- addr={Addr,P2}}} ->
- ?line case ok(gen_sctp:recv(S1)) of
- {Addr,P2,_,#sctp_assoc_change{state=comm_up}} ->
- ok
- end
- end,
- ?line ok = gen_sctp:close(S2).
+ ok(gen_sctp:connect(S2, AddressToConnectTo, P1, [])),
+ %% verify server side also receives comm_up from client
+ ?line recv_comm_up_eventually(S1),
+ ?line ok = gen_sctp:close(S2),
+ ?line ok = gen_sctp:close(S1).
+
+%% If at least one of the addresses is an ipv6 address, return inet6, else inet.
+get_family_by_addrs(Addresses) ->
+ ?line case lists:usort([get_family_by_addr(Addr) || Addr <- Addresses]) of
+ [inet, inet6] -> inet6;
+ [inet] -> inet;
+ [inet6] -> inet6
+ end.
+get_family_by_addr(Addr) when tuple_size(Addr) =:= 4 -> inet;
+get_family_by_addr(Addr) when tuple_size(Addr) =:= 8 -> inet6.
+
+recv_comm_up_eventually(S) ->
+ ?line case ok(gen_sctp:recv(S)) of
+ {_Addr, _Port, _Info, #sctp_assoc_change{state=comm_up}} ->
+ ok;
+ {_Addr, _Port, _Info, _OtherSctpMsg} ->
+ ?line recv_comm_up_eventually(S)
+ end.
%%% %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%%% socket gen_server ultra light

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