Merge branch 'dev' of super:otp into dev

* 'dev' of super:otp: (166 commits)
  Corrected documentation error and added examples to Users Guide
  In TLS 1.1, failure to properly close a connection no longer requires that a session not be resumed.  This is a change from TLS 1.0 to conform with widespread implementation practice.  Erlang ssl will now in TLS 1.0 conform to the widespread implementation practice instead of the specification to avoid performance issues.
  Add escript to bootstrap/bin
  Remove unused variable warning in inet_res
  Remove unused variable in epmd_port
  Remove compiler warnings in inet_drv
  Add SASL test suite
  Allow same module name in multiple applications if explicitely excluded
  Fix bugs concerning the option report_missing_types
  Fix default encoding in SAX parser.
  re: remove gratuitous "it " in manpage
  Spelling in (backward *compatibility*) comment.
  Improve erl_docgen's support for Dialyzer specs and types
  dialyzer warning on mnesia_tm
  Add documentation text about majority checking
  add mnesia_majority_test suite
  where_to_wlock optimization + change_table_majority/2
  bug in mnesia_tm:needs_majority/2
  optimize sticky_lock maj. check
  check majority for sticky locks
  ...

1 files changed, 81 insertions, 1 deletions

diff --git a/lib/kernel/src/gen_tcp.erl b/lib/kernel/src/gen_tcp.erl
index 16a87d71b6..bee61ca84a 100644
--- a/lib/kernel/src/gen_tcp.erl
+++ b/lib/kernel/src/gen_tcp.erl
@@ -1,7 +1,7 @@
 %%
 %% %CopyrightBegin%
 %% 
-%% Copyright Ericsson AB 1997-2010. All Rights Reserved.
+%% Copyright Ericsson AB 1997-2011. 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
@@ -28,12 +28,35 @@
 
 -include("inet_int.hrl").
 
+-type hostname() :: inet:hostname().
+-type ip_address() :: inet:ip_address().
+-type port_number() :: 0..65535.
+-type posix() :: inet:posix().
+-type socket() :: port().
+
 %%
 %% Connect a socket
 %%
+
+-spec connect(Address, Port, Options) -> {ok, Socket} | {error, Reason} when
+      Address :: ip_address() | hostname(),
+      Port :: port_number(),
+      Options :: [Opt :: term()],
+      Socket :: socket(),
+      Reason :: posix().
+
 connect(Address, Port, Opts) -> 
     connect(Address,Port,Opts,infinity).
 
+-spec connect(Address, Port, Options, Timeout) ->
+                     {ok, Socket} | {error, Reason} when
+      Address :: ip_address() | hostname(),
+      Port :: port_number(),
+      Options :: [Opt :: term()],
+      Timeout :: timeout(),
+      Socket :: socket(),
+      Reason :: posix().
+
 connect(Address, Port, Opts, Time) ->
     Timer = inet:start_timer(Time),
     Res = (catch connect1(Address,Port,Opts,Timer)),
@@ -72,6 +95,13 @@ try_connect([], _Port, _Opts, _Timer, _Mod, Err) ->
 %%
 %% Listen on a tcp port
 %%
+
+-spec listen(Port, Options) -> {ok, ListenSocket} | {error, Reason} when
+      Port :: port_number(),
+      Options :: [Opt :: term()],
+      ListenSocket :: socket(),
+      Reason :: posix().
+
 listen(Port, Opts) ->
     Mod = mod(Opts, undefined),
     case Mod:getserv(Port) of
@@ -85,6 +115,12 @@ listen(Port, Opts) ->
 %%
 %% Generic tcp accept
 %%
+
+-spec accept(ListenSocket) -> {ok, Socket} | {error, Reason} when
+      ListenSocket :: socket(),
+      Socket :: socket(),
+      Reason :: closed | timeout | posix().
+
 accept(S) ->
     case inet_db:lookup_socket(S) of
 	{ok, Mod} ->
@@ -93,6 +129,12 @@ accept(S) ->
 	    Error
     end.
 
+-spec accept(ListenSocket, Timeout) -> {ok, Socket} | {error, Reason} when
+      ListenSocket :: socket(),
+      Timeout :: timeout(),
+      Socket :: socket(),
+      Reason :: closed | timeout | posix().
+
 accept(S, Time) when is_port(S) ->
     case inet_db:lookup_socket(S) of
 	{ok, Mod} ->
@@ -104,6 +146,12 @@ accept(S, Time) when is_port(S) ->
 %%
 %% Generic tcp shutdown
 %%
+
+-spec shutdown(Socket, How) -> ok | {error, Reason} when
+      Socket :: socket(),
+      How :: read | write | read_write,
+      Reason :: posix().
+
 shutdown(S, How) when is_port(S) ->
     case inet_db:lookup_socket(S) of
 	{ok, Mod} ->
@@ -115,12 +163,22 @@ shutdown(S, How) when is_port(S) ->
 %%
 %% Close
 %%
+
+-spec close(Socket) -> ok when
+      Socket :: socket().
+
 close(S) ->
     inet:tcp_close(S).
 
 %%
 %% Send
 %%
+
+-spec send(Socket, Packet) -> ok | {error, Reason} when
+      Socket :: socket(),
+      Packet :: string() | binary(),
+      Reason :: posix().
+
 send(S, Packet) when is_port(S) ->
     case inet_db:lookup_socket(S) of
 	{ok, Mod} ->
@@ -132,6 +190,14 @@ send(S, Packet) when is_port(S) ->
 %%
 %% Receive data from a socket (passive mode)
 %%
+
+-spec recv(Socket, Length) -> {ok, Packet} | {error, Reason} when
+      Socket :: socket(),
+      Length :: non_neg_integer(),
+      Packet :: string() | binary() | HttpPacket,
+      Reason :: closed | posix(),
+      HttpPacket :: term().
+
 recv(S, Length) when is_port(S) ->
     case inet_db:lookup_socket(S) of
 	{ok, Mod} ->
@@ -140,6 +206,14 @@ recv(S, Length) when is_port(S) ->
 	    Error
     end.
 
+-spec recv(Socket, Length, Timeout) -> {ok, Packet} | {error, Reason} when
+      Socket :: socket(),
+      Length :: non_neg_integer(),
+      Timeout :: timeout(),
+      Packet :: string() | binary() | HttpPacket,
+      Reason :: closed | posix(),
+      HttpPacket :: term().
+
 recv(S, Length, Time) when is_port(S) ->
     case inet_db:lookup_socket(S) of
 	{ok, Mod} ->
@@ -159,6 +233,12 @@ unrecv(S, Data) when is_port(S) ->
 %%
 %% Set controlling process
 %%
+
+-spec controlling_process(Socket, Pid) -> ok | {error, Reason} when
+      Socket :: socket(),
+      Pid :: pid(),
+      Reason :: closed | not_owner | posix().
+
 controlling_process(S, NewOwner) ->
     case inet_db:lookup_socket(S) of
 	{ok, _Mod} -> % Just check that this is an open socket