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authorPatrik Nyblom <[email protected]>2010-08-24 14:43:18 +0200
committerPatrik Nyblom <[email protected]>2010-08-31 15:42:52 +0200
commitf5be3aeaef131d19741084dbf8fee16458d31513 (patch)
tree42cb876e653504b5f29378dd45113593b7a872d4 /lib/kernel
parent6499bf2816c3834059ebdeff75d98f310cb305b4 (diff)
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Remove all support for ancient EPMD protocol
Diffstat (limited to 'lib/kernel')
-rw-r--r--lib/kernel/src/erl_epmd.erl86
-rw-r--r--lib/kernel/src/erl_epmd.hrl17
2 files changed, 9 insertions, 94 deletions
diff --git a/lib/kernel/src/erl_epmd.erl b/lib/kernel/src/erl_epmd.erl
index 4a22637304..91af49f303 100644
--- a/lib/kernel/src/erl_epmd.erl
+++ b/lib/kernel/src/erl_epmd.erl
@@ -210,19 +210,6 @@ open({A,B,C,D,E,F,G,H}=EpmdAddr, Timeout) when ?ip6(A,B,C,D,E,F,G,H) ->
close(Socket) ->
gen_tcp:close(Socket).
-
-do_register_node_v0(NodeName, TcpPort) ->
- case open() of
- {ok, Socket} ->
- Name = cstring(NodeName),
- Len = 1+2+length(Name),
- gen_tcp:send(Socket, [?int16(Len), ?EPMD_ALIVE,
- ?int16(TcpPort), Name]),
- wait_for_reg_reply_v0(Socket, []);
- Error ->
- Error
- end.
-
do_register_node(NodeName, TcpPort) ->
case open() of
{ok, Socket} ->
@@ -240,14 +227,7 @@ do_register_node(NodeName, TcpPort) ->
Name,
?int16(Elen),
Extra]),
- case wait_for_reg_reply(Socket, []) of
- {error, epmd_close} ->
- %% could be old epmd; try old protocol
-% erlang:display('trying old'),
- do_register_node_v0(NodeName, TcpPort);
- Other ->
- Other
- end;
+ wait_for_reg_reply(Socket, []);
Error ->
Error
end.
@@ -305,41 +285,9 @@ wait_for_reg_reply(Socket, SoFar) ->
{error, no_reg_reply_from_epmd}
end.
-wait_for_reg_reply_v0(Socket, SoFar) ->
- receive
- {tcp, Socket, Data0} ->
- case SoFar ++ Data0 of
- [$Y, A, B] ->
- {alive, Socket, ?u16(A, B)};
- Data when length(Data) < 3 ->
- wait_for_reg_reply(Socket, Data);
- Garbage ->
- {error, {garbage_from_epmd, Garbage}}
- end;
- {tcp_closed, Socket} ->
- {error, duplicate_name} % A guess -- the most likely reason.
- after 10000 ->
- gen_tcp:close(Socket),
- {error, no_reg_reply_from_epmd}
- end.
%%
%% Lookup a node "Name" at Host
%%
-get_port_v0(Node, EpmdAddress) ->
- case open(EpmdAddress) of
- {ok, Socket} ->
- Name = cstring(Node),
- Len = 1+length(Name),
- gen_tcp:send(Socket, [?int16(Len),?EPMD_PORT_PLEASE, Name]),
- wait_for_port_reply_v0(Socket, []);
- _Error ->
- ?port_please_failure(),
- noport
- end.
-
-%%% Not used anymore
-%%% get_port(Node, EpmdAddress) ->
-%%% get_port(Node, EpmdAddress, infinity).
get_port(Node, EpmdAddress, Timeout) ->
case open(EpmdAddress, Timeout) of
@@ -347,40 +295,12 @@ get_port(Node, EpmdAddress, Timeout) ->
Name = to_string(Node),
Len = 1+length(Name),
gen_tcp:send(Socket, [?int16(Len),?EPMD_PORT_PLEASE2_REQ, Name]),
- Reply = wait_for_port_reply(Socket, []),
- case Reply of
- closed ->
- get_port_v0(Node, EpmdAddress);
- Other ->
- Other
- end;
+ wait_for_port_reply(Socket, []);
_Error ->
?port_please_failure2(_Error),
noport
end.
-wait_for_port_reply_v0(Socket, SoFar) ->
- receive
- {tcp, Socket, Data0} ->
-% io:format("got ~p~n", [Data0]),
- case SoFar ++ Data0 of
- [A, B] ->
- wait_for_close(Socket, {port, ?u16(A, B), 0});
-% wait_for_close(Socket, {port, ?u16(A, B)});
- Data when length(Data) < 2 ->
- wait_for_port_reply_v0(Socket, Data);
- Garbage ->
- ?port_please_failure(),
- {error, {garbage_from_epmd, Garbage}}
- end;
- {tcp_closed, Socket} ->
- ?port_please_failure(),
- noport
- after 10000 ->
- ?port_please_failure(),
- gen_tcp:close(Socket),
- noport
- end.
wait_for_port_reply(Socket, SoFar) ->
receive
@@ -487,8 +407,6 @@ wait_for_close(Socket, Reply) ->
%%
%% Creates a (flat) null terminated string from atom or list.
%%
-cstring(S) when is_atom(S) -> cstring(atom_to_list(S));
-cstring(S) when is_list(S) -> S ++ [0].
to_string(S) when is_atom(S) -> atom_to_list(S);
to_string(S) when is_list(S) -> S.
diff --git a/lib/kernel/src/erl_epmd.hrl b/lib/kernel/src/erl_epmd.hrl
index 47ab6195d8..5a50fda508 100644
--- a/lib/kernel/src/erl_epmd.hrl
+++ b/lib/kernel/src/erl_epmd.hrl
@@ -1,7 +1,7 @@
%%
%% %CopyrightBegin%
%%
-%% Copyright Ericsson AB 1998-2009. All Rights Reserved.
+%% Copyright Ericsson AB 1998-2010. 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
@@ -17,16 +17,13 @@
%% %CopyrightEnd%
%%
--define(EPMD_ALIVE, $a).
--define(EPMD_PORT_PLEASE, $p).
--define(EPMD_NAMES, $n).
--define(EPMD_DUMP, $d).
--define(EPMD_KILL, $k).
--define(EPMD_STOP, $s).
-
--define(EPMD_ALIVE_OK, $Y).
-
-define(EPMD_ALIVE2_REQ, $x).
-define(EPMD_PORT_PLEASE2_REQ, $z).
-define(EPMD_ALIVE2_RESP, $y).
-define(EPMD_PORT2_RESP, $w).
+-define(EPMD_NAMES, $n).
+
+%% Commands used only by interactive client
+-define(EPMD_DUMP, $d).
+-define(EPMD_KILL, $k).
+-define(EPMD_STOP, $s).