Remove all support for ancient EPMD protocol

7 files changed, 75 insertions, 448 deletions

diff --git a/erts/epmd/test/epmd_SUITE.erl b/erts/epmd/test/epmd_SUITE.erl
index 91e09faf75..88980fec63 100644
--- a/erts/epmd/test/epmd_SUITE.erl
+++ b/erts/epmd/test/epmd_SUITE.erl
@@ -82,11 +82,8 @@
 -define(REG_REPEAT_LIM,1000).
 
 % Message codes in epmd protocol
--define(EPMD_ALIVE_REQ,		$a).
 -define(EPMD_ALIVE2_REQ,	$x).
--define(EPMD_ALIVE_OK_RESP,	$Y).
 -define(EPMD_ALIVE2_RESP,	$y).
--define(EPMD_PORT_REQ,		$p).
 -define(EPMD_PORT_PLEASE2_REQ,	$z).
 -define(EPMD_PORT2_RESP,	$w).
 -define(EPMD_NAMES_REQ,	$n).
@@ -148,7 +145,7 @@ register_name(doc) ->
     ["Register a name"];
 register_name(suite) ->
     [];
-register_name(Config) when list(Config) ->
+register_name(Config) when is_list(Config) ->
     ?line ok = epmdrun(),
     ?line {ok,Sock} = register_node("foobar"),
     ?line ok = close(Sock),			% Unregister
@@ -158,7 +155,7 @@ register_names_1(doc) ->
     ["Register and unregister two nodes"];
 register_names_1(suite) ->
     [];
-register_names_1(Config) when list(Config) ->
+register_names_1(Config) when is_list(Config) ->
     ?line ok = epmdrun(),
     ?line {ok,Sock1} = register_node("foobar"),
     ?line {ok,Sock2} = register_node("foozap"),
@@ -170,7 +167,7 @@ register_names_2(doc) ->
     ["Register and unregister two nodes"];
 register_names_2(suite) ->
     [];
-register_names_2(Config) when list(Config) ->
+register_names_2(Config) when is_list(Config) ->
     ?line ok = epmdrun(),
     ?line {ok,Sock1} = register_node("foobar"),
     ?line {ok,Sock2} = register_node("foozap"),
@@ -182,7 +179,7 @@ register_duplicate_name(doc) ->
     ["Two nodes with the same name"];
 register_duplicate_name(suite) ->
     [];
-register_duplicate_name(Config) when list(Config) ->
+register_duplicate_name(Config) when is_list(Config) ->
     ?line ok = epmdrun(),
     ?line {ok,Sock} = register_node("foobar"),
     ?line error = register_node("foobar"),
@@ -192,22 +189,9 @@ register_duplicate_name(Config) when list(Config) ->
 % Internal function to register a node name, no close, i.e. unregister
 
 register_node(Name) ->
-    register_node(Name,?DUMMY_PORT).
-
-register_node(Name, Port) ->
-    case send_req([?EPMD_ALIVE_REQ, put16(Port), Name]) of
-	{ok,Sock} ->
-	    case recv(Sock,3) of
-		{ok, [?EPMD_ALIVE_OK_RESP,_D1,_D0]} ->
-		    {ok,Sock};
-		Other ->
-		    test_server:format("recv on sock ~w: ~p~n",
-				       [Sock,Other]),
-		    error
-	    end;
-	error ->
-	    error
-    end.
+    register_node_v2(?DUMMY_PORT,$M,0,5,5,Name,"").
+register_node(Name,Port) ->
+    register_node_v2(Port,$M,0,5,5,Name,"").
 
 register_node_v2(Port, NodeType, Prot, HVsn, LVsn, Name, Extra) ->
     Req = [?EPMD_ALIVE2_REQ, put16(Port), NodeType, Prot,
@@ -254,7 +238,7 @@ parse_port2_resp(Resp) ->
 			    hvsn=HVsn,lvsn=LVsn,
 			    node_name=binary_to_list(NodeName),
 			    extra=binary_to_list(Extra)}};
-	Other ->
+	_Other ->
 	    test_server:format("invalid port2 resp: ~p~n",
 			       [Resp]),
 	    error
@@ -266,7 +250,7 @@ name_with_null_inside(doc) ->
     ["Register a name with a null char in it"];
 name_with_null_inside(suite) ->
     [];
-name_with_null_inside(Config) when list(Config) ->
+name_with_null_inside(Config) when is_list(Config) ->
     ?line ok = epmdrun(),
     ?line error = register_node("foo\000bar"),
     ok.
@@ -277,11 +261,9 @@ name_null_terminated(doc) ->
     ["Register a name with terminating null byte"];
 name_null_terminated(suite) ->
     [];
-name_null_terminated(Config) when list(Config) ->
+name_null_terminated(Config) when is_list(Config) ->
     ?line ok = epmdrun(),
-    ?line {ok,Sock} = register_node("foobar\000"),
-    ?line error = register_node("foobar"),
-    ?line ok = close(Sock),			% Unregister
+    ?line error = register_node("foobar\000"),
     ok.
 
 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
@@ -290,7 +272,7 @@ stupid_names_req(doc) ->
     ["Read names from epmd in a stupid way"];
 stupid_names_req(suite) ->
     [];
-stupid_names_req(Config) when list(Config) ->
+stupid_names_req(Config) when is_list(Config) ->
     Dog = ?config(watchdog, Config),
     test_server:timetrap_cancel(Dog),
     LongDog = test_server:timetrap(?MEDIUM_TEST_TIMEOUT),
@@ -394,15 +376,15 @@ get_port_nr(doc) ->
     ["Register a name on a port and ask about port nr"];
 get_port_nr(suite) ->
     [];
-get_port_nr(Config) when list(Config) ->
-    port_request([?EPMD_PORT_REQ,"foo"]).
+get_port_nr(Config) when is_list(Config) ->
+    port_request([?EPMD_PORT_PLEASE2_REQ,"foo"]).
 
 slow_get_port_nr(doc) ->
     ["Register with slow write and ask about port nr"];
 slow_get_port_nr(suite) ->
     [];
-slow_get_port_nr(Config) when list(Config) ->
-    port_request([?EPMD_PORT_REQ,d,$f,d,$o,d,$o]).
+slow_get_port_nr(Config) when is_list(Config) ->
+    port_request([?EPMD_PORT_PLEASE2_REQ,d,$f,d,$o,d,$o]).
 
 
 % Internal function used above
@@ -413,9 +395,18 @@ port_request(M) ->
     ?line {ok,RSock} = register_node("foo", Port),
     ?line {ok,Sock} = connect(),
     ?line ok = send(Sock,[size16(M),M]),
-    R = put16(Port),
-    ?line {ok,R} = recv(Sock, length(R)),
-    ?line ok = close(RSock),
+    ?line case recv_until_sock_closes(Sock) of
+	      {ok, Resp} ->
+		  ?line close(RSock),
+		  ?line {ok,Rec} = parse_port2_resp(Resp),
+		  ?line Port = Rec#node_info.port,
+		  ok;
+	      Other ->
+		  ?line close(RSock),
+		  ?line test_server:format("recv on sock ~w: ~p~n",
+					   [Sock,Other]),
+		  ?line throw({error,Other})
+	  end,
     ok.
 
 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
@@ -424,7 +415,7 @@ unregister_others_name_1(doc) ->
     ["Unregister name of other node"];
 unregister_others_name_1(suite) ->
     [];
-unregister_others_name_1(Config) when list(Config) ->
+unregister_others_name_1(Config) when is_list(Config) ->
     ?line ok = epmdrun(),
     ?line {ok,RSock} = register_node("foo"),
     ?line {ok,Sock} = connect(),
@@ -441,7 +432,7 @@ unregister_others_name_2(doc) ->
     ["Unregister name of other node"];
 unregister_others_name_2(suite) ->
     [];
-unregister_others_name_2(Config) when list(Config) ->
+unregister_others_name_2(Config) when is_list(Config) ->
     ?line ok = epmdrun(),
     ?line {ok,Sock} = connect(),
     M = [?EPMD_STOP_REQ,"xxx42"],
@@ -456,7 +447,7 @@ register_overflow(doc) ->
     ["Register too many, clean and redo 10 times"];
 register_overflow(suite) ->
     [];
-register_overflow(Config) when list(Config) ->
+register_overflow(Config) when is_list(Config) ->
     Dog = ?config(watchdog, Config),
     test_server:timetrap_cancel(Dog),
     LongDog = test_server:timetrap(?LONG_TEST_TIMEOUT),
@@ -546,7 +537,7 @@ no_data(doc) ->
     ["Open but send no data"];
 no_data(suite) ->
     [];
-no_data(Config) when list(Config) ->
+no_data(Config) when is_list(Config) ->
     ?line ok = epmdrun(),
     ?line {ok,Sock} = connect(),
     sleep(?LONG_PAUSE),
@@ -559,7 +550,7 @@ one_byte(doc) ->
     ["Send one byte only"];
 one_byte(suite) ->
     [];
-one_byte(Config) when list(Config) ->
+one_byte(Config) when is_list(Config) ->
     ?line ok = epmdrun(),
     ?line {ok,Sock} = connect(),
     ?line ok = send(Sock,[0]),
@@ -573,7 +564,7 @@ two_bytes(doc) ->
     ["Send packet size only"];
 two_bytes(suite) ->
     [];
-two_bytes(Config) when list(Config) ->
+two_bytes(Config) when is_list(Config) ->
     ?line ok = epmdrun(),
     ?line {ok,Sock} = connect(),
     ?line ok = send(Sock,[put16(3)]),
@@ -587,7 +578,7 @@ partial_packet(doc) ->
     ["Got only part of a packet"];
 partial_packet(suite) ->
     [];
-partial_packet(Config) when list(Config) ->
+partial_packet(Config) when is_list(Config) ->
     ?line ok = epmdrun(),
     ?line {ok,Sock} = connect(),
     ?line ok = send(Sock,[put16(100),"only a few bytes"]),
@@ -601,7 +592,7 @@ zero_length(doc) ->
     ["Invalid zero packet size"];
 zero_length(suite) ->
     [];
-zero_length(Config) when list(Config) ->
+zero_length(Config) when is_list(Config) ->
     ?line ok = epmdrun(),
     ?line {ok,Sock} = connect(),
     ?line ok = send(Sock,[0,0,0,0,0,0,0,0,0,0]),
@@ -615,7 +606,7 @@ too_large(doc) ->
     ["Invalid large packet"];
 too_large(suite) ->
     [];
-too_large(Config) when list(Config) ->
+too_large(Config) when is_list(Config) ->
     ?line ok = epmdrun(),
     ?line {ok,Sock} = connect(),
     Size = 63000,
@@ -631,10 +622,11 @@ alive_req_too_small_1(doc) ->
     ["Try to register but not enough data"];
 alive_req_too_small_1(suite) ->
     [];
-alive_req_too_small_1(Config) when list(Config) ->
+alive_req_too_small_1(Config) when is_list(Config) ->
     ?line ok = epmdrun(),
     ?line {ok,Sock} = connect(),
-    M = [?EPMD_ALIVE_REQ, 42],
+    M = [?EPMD_ALIVE2_REQ, put16(?DUMMY_PORT),$M,0, put16(5),
+	 put16(5),put16(0)],
     ?line ok = send(Sock, [size16(M), M]),
     sleep(?MEDIUM_PAUSE),
     ?line closed = recv(Sock,1),
@@ -646,10 +638,11 @@ alive_req_too_small_2(doc) ->
     ["Try to register but not enough data"];
 alive_req_too_small_2(suite) ->
     [];
-alive_req_too_small_2(Config) when list(Config) ->
+alive_req_too_small_2(Config) when is_list(Config) ->
     ?line ok = epmdrun(),
     ?line {ok,Sock} = connect(),
-    M = [?EPMD_ALIVE_REQ, put16(?DUMMY_PORT)],
+    M =  [?EPMD_ALIVE2_REQ, put16(?DUMMY_PORT),$M,0, put16(5),
+	  put16(5)],
     ?line ok = send(Sock, [size16(M), M]),
     sleep(?MEDIUM_PAUSE),
     ?line closed = recv(Sock,1),
@@ -661,7 +654,7 @@ alive_req_too_large(doc) ->
     ["Try to register but node name too large"];
 alive_req_too_large(suite) ->
     [];
-alive_req_too_large(Config) when list(Config) ->
+alive_req_too_large(Config) when is_list(Config) ->
     ?line ok = epmdrun(),
     ?line {ok,Sock} = connect(),
     L = [
@@ -678,10 +671,12 @@ alive_req_too_large(Config) when list(Config) ->
 	 "aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa",
 	 "aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa"
 	 ],
-    M = [?EPMD_ALIVE_REQ, put16(?DUMMY_PORT), L],
+    S = length(lists:flatten(L)),
+    M = [?EPMD_ALIVE2_REQ, put16(?DUMMY_PORT),$M,0, put16(5),
+	 put16(5), put16(S),L,put16(0)],
     ?line ok = send(Sock, [size16(M), M]),
     sleep(?MEDIUM_PAUSE),
-    ?line closed = recv(Sock,1),
+    ?line {ok,[?EPMD_ALIVE2_RESP,1]} = recv(Sock,2),
     ok.
 
 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
@@ -690,7 +685,7 @@ returns_valid_empty_extra(doc) ->
     ["Check that an empty extra is prefixed by a two byte length"];
 returns_valid_empty_extra(suite) ->
     [];
-returns_valid_empty_extra(Config) when list(Config) ->
+returns_valid_empty_extra(Config) when is_list(Config) ->
     ?line ok = epmdrun(),
     ?line {ok,Sock} = register_node_v2(4711, 72, 0, 5, 5, "foo", []),
     ?line {ok,#node_info{extra=[]}} = port_please_v2("foo"),
@@ -703,7 +698,7 @@ returns_valid_populated_extra_with_nulls(doc) ->
     ["Check a populated extra with embedded null characters"];
 returns_valid_populated_extra_with_nulls(suite) ->
     [];
-returns_valid_populated_extra_with_nulls(Config) when list(Config) ->
+returns_valid_populated_extra_with_nulls(Config) when is_list(Config) ->
     ?line ok = epmdrun(),
     ?line {ok,Sock} = register_node_v2(4711, 72, 0, 5, 5, "foo", "ABC\000\000"),
     ?line {ok,#node_info{extra="ABC\000\000"}} = port_please_v2("foo"),
@@ -858,9 +853,9 @@ send(Sock, SendSpec) ->
 
 send([], RevBytes, _Sock) ->
     {ok,RevBytes};
-send([Byte | Spec], RevBytes, Sock) when integer(Byte) ->
+send([Byte | Spec], RevBytes, Sock) when is_integer(Byte) ->
     send(Spec, [Byte | RevBytes], Sock);
-send([List | Spec], RevBytes, Sock) when list(List) ->
+send([List | Spec], RevBytes, Sock) when is_list(List) ->
     case send(List, RevBytes, Sock) of
 	{ok,Left} ->
 	    send(Spec, Left, Sock);
diff --git a/lib/erl_interface/src/epmd/ei_epmd.h b/lib/erl_interface/src/epmd/ei_epmd.h
index 40e5ece572..ccacfed244 100644
--- a/lib/erl_interface/src/epmd/ei_epmd.h
+++ b/lib/erl_interface/src/epmd/ei_epmd.h
@@ -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
@@ -40,20 +40,13 @@
 #define EI_MYPROTO 0 /* tcp/ip */
 #endif
 
-/* epmd r3 protocol */
-#ifndef EI_EPMD_ALIVE_REQ
-#define EI_EPMD_ALIVE_REQ     'a'
-#define EI_EPMD_ALIVE_OK_RESP 'Y'
-#define EI_EPMD_PORT_REQ      'p'
-#define EI_EPMD_STOP_REQ      's'
-#endif
-
 /* epmd r4 */
 #ifndef EI_EPMD_ALIVE2_REQ
 #define EI_EPMD_ALIVE2_REQ  120
 #define EI_EPMD_ALIVE2_RESP 121
 #define EI_EPMD_PORT2_REQ   122
 #define EI_EPMD_PORT2_RESP  119
+#define EI_EPMD_STOP_REQ      's'
 #endif
 
 /* internal functions */
diff --git a/lib/erl_interface/src/epmd/epmd_port.c b/lib/erl_interface/src/epmd/epmd_port.c
index 663b38d2d4..3dd3da7aae 100644
--- a/lib/erl_interface/src/epmd/epmd_port.c
+++ b/lib/erl_interface/src/epmd/epmd_port.c
@@ -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
@@ -92,64 +92,6 @@ int ei_epmd_connect_tmo(struct in_addr *inaddr, unsigned ms)
   return sd;
 }
 
-/* get the given node's listen port using old epmd protocol */
-static int ei_epmd_r3_port (struct in_addr *addr, const char *alive,
-			    unsigned ms)
-{
-  char buf[EPMDBUF];
-  char *s = buf;
-  int len = strlen(alive) + 1;
-  int fd;
-  int port;
-  int res;
-#if defined(VXWORKS)
-  char ntoabuf[32];
-#endif
-  
-  put16be(s,len);
-  put8(s,EI_EPMD_PORT_REQ);
-  strcpy(s,alive);
-
-  /* connect to epmd */
-  if ((fd = ei_epmd_connect_tmo(addr,ms)) < 0) 
-  {
-      /* ei_epmd_connect_tmo() sets erl_errno */
-      return -1;
-  }
-
-  if ((res = ei_write_fill_t(fd, buf, len+2, ms)) != len+2) {
-    closesocket(fd);
-    erl_errno = (res == -2) ? ETIMEDOUT : EIO;
-    return -1;
-  }
-
-#ifdef VXWORKS
-  /* FIXME use union/macro for level. Correct level? */
-  if (ei_tracelevel > 2) {
-    inet_ntoa_b(*addr,ntoabuf);
-    EI_TRACE_CONN2("ei_epmd_r3_port",
-		   "-> PORT_REQ alive=%s ip=%s",alive,ntoabuf);
-  }
-#else
-  EI_TRACE_CONN2("ei_epmd_r3_port",
-		 "-> PORT_REQ alive=%s ip=%s",alive,inet_ntoa(*addr));
-#endif
-  
-  if ((res = ei_read_fill_t(fd, buf, 2, ms)) != 2) {
-    EI_TRACE_ERR0("ei_epmd_r3_port","<- CLOSE");
-    closesocket(fd);
-    erl_errno = (res == -2) ? ETIMEDOUT : EIO;
-    return -1;
-  }
-  closesocket(fd);
-  s = buf;
-  port = get16be(s);
-
-  EI_TRACE_CONN1("ei_epmd_r3_port","<- PORT_RESP port=%d",port);
-
-  return port;
-}
-
 static int ei_epmd_r4_port (struct in_addr *addr, const char *alive,
 			    int *dist, unsigned ms)
 {
@@ -285,15 +227,6 @@ int ei_epmd_port_tmo (struct in_addr *addr, const char *alive, int *dist,
 {
   int i;
 
-  /* try the new one first, then the old one */
-  i = ei_epmd_r4_port(addr,alive,dist,ms);
-
-  /* -2: new protocol not understood */
-  if (i == -2) {
-    *dist = 0; 
-    i = ei_epmd_r3_port(addr,alive,ms);
-  }
-
-  return i;
+  return ei_epmd_r4_port(addr,alive,dist,ms);
 }
 
diff --git a/lib/erl_interface/src/epmd/epmd_publish.c b/lib/erl_interface/src/epmd/epmd_publish.c
index 09b3dce43b..a9b8727747 100644
--- a/lib/erl_interface/src/epmd/epmd_publish.c
+++ b/lib/erl_interface/src/epmd/epmd_publish.c
@@ -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
@@ -55,62 +55,6 @@
 
 /* publish our listen port and alive name */
 /* return the (useless) creation number */
-static int ei_epmd_r3_publish (int port, const char *alive, unsigned ms)
-{
-  char buf[EPMDBUF];
-  char *s = buf;
-  int fd;
-  int len = strlen(alive) + 3;
-  int res,creation;
-
-  s = buf;
-  put16be(s,len);
-  put8(s,EI_EPMD_ALIVE_REQ);
-  put16be(s,port); 
-  strcpy(s, alive);
-
-  if ((fd = ei_epmd_connect_tmo(NULL,ms)) < 0) return fd;
-
-  if ((res = ei_write_fill_t(fd, buf, len+2, ms)) != len+2) {
-    closesocket(fd);
-    erl_errno = (res == -2) ? ETIMEDOUT : EIO;
-    return -1;
-  }
-
-  EI_TRACE_CONN2("ei_epmd_r3_publish",
-		 "-> ALIVE_REQ alive=%s port=%d",alive,port);
-
-  if ((res = ei_read_fill_t(fd, buf, 3, ms)) != 3) {
-    closesocket(fd);
-    erl_errno = (res == -2) ? ETIMEDOUT : EIO;
-    return -1;
-  }
-
-  s = buf;
-  if ((res=get8(s)) != EI_EPMD_ALIVE_OK_RESP) {
-      EI_TRACE_ERR1("ei_epmd_r3_publish",
-		    "<- ALIVE_NOK result=%d (failure)",res);
-    closesocket(fd);
-    erl_errno = EIO;
-    return -1;
-  }
-
-  creation = get16be(s);
-
-  EI_TRACE_CONN1("ei_epmd_r3_publish","<- ALIVE_OK creation=%d",creation);
-
-  /* Don't close fd here! It keeps us registered with epmd */
-
-  /* probably should save fd so we can close it later... */
-  /* epmd_saveconn(OPEN,fd,alive); */
-
-  /* return the creation number, for no good reason */
-  /* return creation; */
-
-  /* no! return the descriptor */
-  return fd;
-}
-
 /* publish our listen port and alive name */
 /* return the (useless) creation number */
 /* this protocol is a lot more complex than the old one */
@@ -200,15 +144,7 @@ int ei_epmd_publish(int port, const char *alive)
 
 int ei_epmd_publish_tmo(int port, const char *alive, unsigned ms)
 {
-  int i;
-
-  /* try the new one first, then the old one */
-  i = ei_epmd_r4_publish(port,alive, ms);
-
-  /* -2: new protocol not understood */
-  if (i == -2) i = ei_epmd_r3_publish(port,alive, ms);
-
-  return i;
+  return ei_epmd_r4_publish(port,alive, ms);;
 }
 
 
diff --git a/lib/jinterface/java_src/com/ericsson/otp/erlang/OtpEpmd.java b/lib/jinterface/java_src/com/ericsson/otp/erlang/OtpEpmd.java
index 3bb678c2cc..deac528133 100644
--- a/lib/jinterface/java_src/com/ericsson/otp/erlang/OtpEpmd.java
+++ b/lib/jinterface/java_src/com/ericsson/otp/erlang/OtpEpmd.java
@@ -1,7 +1,7 @@
 /*
  * %CopyrightBegin%
  * 
- * Copyright Ericsson AB 2000-2009. All Rights Reserved.
+ * Copyright Ericsson AB 2000-2010. 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
@@ -71,11 +71,6 @@ public class OtpEpmd {
     // common values
     private static final byte stopReq = (byte) 115;
 
-    // version specific value
-    private static final byte port3req = (byte) 112;
-    private static final byte publish3req = (byte) 97;
-    private static final byte publish3ok = (byte) 89;
-
     private static final byte port4req = (byte) 122;
     private static final byte port4resp = (byte) 119;
     private static final byte publish4req = (byte) 120;
@@ -123,11 +118,7 @@ public class OtpEpmd {
      *                if there was no response from the name server.
      */
     public static int lookupPort(final AbstractNode node) throws IOException {
-	try {
 	    return r4_lookupPort(node);
-	} catch (final IOException e) {
-	    return r3_lookupPort(node);
-	}
     }
 
     /**
@@ -147,11 +138,7 @@ public class OtpEpmd {
 	    throws IOException {
 	Socket s = null;
 
-	try {
-	    s = r4_publish(node);
-	} catch (final IOException e) {
-	    s = r3_publish(node);
-	}
+	s = r4_publish(node);
 
 	node.setEpmd(s);
 
@@ -196,67 +183,6 @@ public class OtpEpmd {
 	}
     }
 
-    private static int r3_lookupPort(final AbstractNode node)
-	    throws IOException {
-	int port = 0;
-	Socket s = null;
-
-	try {
-	    final OtpOutputStream obuf = new OtpOutputStream();
-	    s = new Socket(node.host(), EpmdPort.get());
-
-	    // build and send epmd request
-	    // length[2], tag[1], alivename[n] (length = n+1)
-	    obuf.write2BE(node.alive().length() + 1);
-	    obuf.write1(port3req);
-	    obuf.writeN(node.alive().getBytes());
-
-	    // send request
-	    obuf.writeTo(s.getOutputStream());
-
-	    if (traceLevel >= traceThreshold) {
-		System.out.println("-> LOOKUP (r3) " + node);
-	    }
-
-	    // receive and decode reply
-	    final byte[] tmpbuf = new byte[100];
-
-	    s.getInputStream().read(tmpbuf);
-	    final OtpInputStream ibuf = new OtpInputStream(tmpbuf, 0);
-
-	    port = ibuf.read2BE();
-	} catch (final IOException e) {
-	    if (traceLevel >= traceThreshold) {
-		System.out.println("<- (no response)");
-	    }
-	    throw new IOException("Nameserver not responding on " + node.host()
-		    + " when looking up " + node.alive());
-	} catch (final OtpErlangDecodeException e) {
-	    if (traceLevel >= traceThreshold) {
-		System.out.println("<- (invalid response)");
-	    }
-	    throw new IOException("Nameserver not responding on " + node.host()
-		    + " when looking up " + node.alive());
-	} finally {
-	    try {
-		if (s != null) {
-		    s.close();
-		}
-	    } catch (final IOException e) { /* ignore close errors */
-	    }
-	    s = null;
-	}
-
-	if (traceLevel >= traceThreshold) {
-	    if (port == 0) {
-		System.out.println("<- NOT FOUND");
-	    } else {
-		System.out.println("<- PORT " + port);
-	    }
-	}
-	return port;
-    }
-
     private static int r4_lookupPort(final AbstractNode node)
 	    throws IOException {
 	int port = 0;
@@ -288,8 +214,6 @@ public class OtpEpmd {
 	    final int n = s.getInputStream().read(tmpbuf);
 
 	    if (n < 0) {
-		// this was an r3 node => not a failure (yet)
-
 		s.close();
 		throw new IOException("Nameserver not responding on "
 			+ node.host() + " when looking up " + node.alive());
@@ -342,81 +266,13 @@ public class OtpEpmd {
 	return port;
     }
 
-    private static Socket r3_publish(final OtpLocalNode node)
-	    throws IOException {
-	Socket s = null;
-
-	try {
-	    final OtpOutputStream obuf = new OtpOutputStream();
-	    s = new Socket((String) null, EpmdPort.get());
-
-	    obuf.write2BE(node.alive().length() + 3);
-
-	    obuf.write1(publish3req);
-	    obuf.write2BE(node.port());
-	    obuf.writeN(node.alive().getBytes());
-
-	    // send request
-	    obuf.writeTo(s.getOutputStream());
-	    if (traceLevel >= traceThreshold) {
-		System.out.println("-> PUBLISH (r3) " + node + " port="
-			+ node.port());
-	    }
-
-	    final byte[] tmpbuf = new byte[100];
-
-	    final int n = s.getInputStream().read(tmpbuf);
-
-	    if (n < 0) {
-		s.close();
-		if (traceLevel >= traceThreshold) {
-		    System.out.println("<- (no response)");
-		}
-		return null;
-	    }
-
-	    final OtpInputStream ibuf = new OtpInputStream(tmpbuf, 0);
-
-	    if (ibuf.read1() == publish3ok) {
-		node.creation = ibuf.read2BE();
-		if (traceLevel >= traceThreshold) {
-		    System.out.println("<- OK");
-		}
-		return s; // success - don't close socket
-	    }
-	} catch (final IOException e) {
-	    // epmd closed the connection = fail
-	    if (s != null) {
-		s.close();
-	    }
-	    if (traceLevel >= traceThreshold) {
-		System.out.println("<- (no response)");
-	    }
-	    throw new IOException("Nameserver not responding on " + node.host()
-		    + " when publishing " + node.alive());
-	} catch (final OtpErlangDecodeException e) {
-	    if (s != null) {
-		s.close();
-	    }
-	    if (traceLevel >= traceThreshold) {
-		System.out.println("<- (invalid response)");
-	    }
-	    throw new IOException("Nameserver not responding on " + node.host()
-		    + " when publishing " + node.alive());
-	}
-
-	if (s != null) {
-	    s.close();
-	}
-	return null; // failure
-    }
-
     /*
-     * this function will get an exception if it tries to talk to an r3 epmd, or
-     * if something else happens that it cannot forsee. In both cases we return
-     * an exception (and the caller should try again, using the r3 protocol). If
-     * we manage to successfully communicate with an r4 epmd, we return either
-     * the socket, or null, depending on the result.
+     * this function will get an exception if it tries to talk to a
+     * very old epmd, or if something else happens that it cannot
+     * forsee. In both cases we return an exception. We no longer
+     * support r3, so the exception is fatal. If we manage to
+     * successfully communicate with an r4 epmd, we return either the
+     * socket, or null, depending on the result.
      */
     private static Socket r4_publish(final OtpLocalNode node)
 	    throws IOException {
@@ -454,7 +310,6 @@ public class OtpEpmd {
 	    final int n = s.getInputStream().read(tmpbuf);
 
 	    if (n < 0) {
-		// this was an r3 node => not a failure (yet)
 		if (s != null) {
 		    s.close();
 		}
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).