diff options
Diffstat (limited to 'lib/kernel/src/inet.erl')
| -rw-r--r-- | lib/kernel/src/inet.erl | 96 |
1 files changed, 67 insertions, 29 deletions
diff --git a/lib/kernel/src/inet.erl b/lib/kernel/src/inet.erl index 327e0f93f1..5649188c38 100644 --- a/lib/kernel/src/inet.erl +++ b/lib/kernel/src/inet.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 @@ -63,7 +63,8 @@ %% timer interface -export([start_timer/1, timeout/1, timeout/2, stop_timer/1]). --export_type([ip_address/0, socket/0]). +-export_type([family_option/0, hostent/0, hostname/0, ip4_address/0, + ip6_address/0, ip_address/0, posix/0, socket/0]). %% imports -import(lists, [append/1, duplicate/2, filter/2, foldl/3]). @@ -79,8 +80,16 @@ %%% --------------------------------- %%% Contract type definitions + +-type hostent() :: #hostent{}. +-type hostname() :: atom() | string(). +-type ip4_address() :: {0..255,0..255,0..255,0..255}. +-type ip6_address() :: {0..65535,0..65535,0..65535,0..65535, + 0..65535,0..65535,0..65535,0..65535}. +-type ip_address() :: ip4_address() | ip6_address(). +-type ip_port() :: 0..65535. +-type posix() :: exbadport | exbadseq | file:posix(). -type socket() :: port(). --type posix() :: atom(). -type socket_setopt() :: {'raw', non_neg_integer(), non_neg_integer(), binary()} | @@ -106,7 +115,7 @@ {'packet', 0 | 1 | 2 | 4 | 'raw' | 'sunrm' | 'asn1' | 'cdr' | 'fcgi' | 'line' | 'tpkt' | 'http' | 'httph' | 'http_bin' | 'httph_bin' } | - {'mode', list() | binary()} | + {'mode', 'list' | 'binary'} | {'port', 'port', 'term'} | {'exit_on_close', boolean()} | {'low_watermark', non_neg_integer()} | @@ -195,12 +204,13 @@ %%% --------------------------------- --spec get_rc() -> [{any(),any()}]. +-spec get_rc() -> [{Par :: any(), Val :: any()}]. get_rc() -> inet_db:get_rc(). --spec close(Socket :: socket()) -> 'ok'. +-spec close(Socket) -> 'ok' when + Socket :: socket(). close(Socket) -> prim_inet:close(Socket), @@ -211,8 +221,10 @@ close(Socket) -> ok end. --spec peername(Socket :: socket()) -> - {'ok', {ip_address(), non_neg_integer()}} | {'error', posix()}. +-spec peername(Socket) -> {ok, {Address, Port}} | {error, posix()} when + Socket :: socket(), + Address :: ip_address(), + Port :: non_neg_integer(). peername(Socket) -> prim_inet:peername(Socket). @@ -226,8 +238,10 @@ setpeername(Socket, undefined) -> prim_inet:setpeername(Socket, undefined). --spec sockname(Socket :: socket()) -> - {'ok', {ip_address(), non_neg_integer()}} | {'error', posix()}. +-spec sockname(Socket) -> {ok, {Address, Port}} | {error, posix()} when + Socket :: socket(), + Address :: ip_address(), + Port :: non_neg_integer(). sockname(Socket) -> prim_inet:sockname(Socket). @@ -260,8 +274,10 @@ send(Socket, Packet) -> setopts(Socket, Opts) -> prim_inet:setopts(Socket, Opts). --spec getopts(Socket :: socket(), Opts :: [socket_getopt()]) -> - {'ok', [socket_setopt()]} | {'error', posix()}. +-spec getopts(Socket, Options) -> + {'ok', [socket_setopt()]} | {'error', posix()} when + Socket :: socket(), + Options :: [socket_getopt()]. getopts(Socket, Opts) -> prim_inet:getopts(Socket, Opts). @@ -272,7 +288,19 @@ getopts(Socket, Opts) -> getifaddrs(Socket) -> prim_inet:getifaddrs(Socket). --spec getifaddrs() -> {'ok', [string()]} | {'error', posix()}. +-spec getifaddrs() -> {ok, Iflist} | {error, posix()} when + Iflist :: [{Ifname,[Ifopt]}], + Ifname :: string(), + Ifopt :: {flag,[Flag]} | {addr,Addr} | {netmask,Netmask} + | {broadaddr,Broadaddr} | {dstaddr,Dstaddr} + | {hwaddr,Hwaddr}, + Flag :: up | broadcast | loopback | pointtopoint + | running | multicast, + Addr :: ip_address(), + Netmask :: ip_address(), + Broadaddr :: ip_address(), + Dstaddr :: ip_address(), + Hwaddr :: [byte()]. getifaddrs() -> withsocket(fun(S) -> prim_inet:getifaddrs(S) end). @@ -371,7 +399,8 @@ popf(_Socket) -> % use of the DHCP-protocol % should never fail --spec gethostname() -> {'ok', string()}. +-spec gethostname() -> {'ok', Hostname} when + Hostname :: string(). gethostname() -> case inet_udp:open(0,[]) of @@ -402,19 +431,23 @@ getstat(Socket) -> getstat(Socket,What) -> prim_inet:getstat(Socket, What). --spec gethostbyname(Name :: string() | atom()) -> - {'ok', #hostent{}} | {'error', posix()}. +-spec gethostbyname(Hostname) -> {ok, Hostent} | {error, posix()} when + Hostname :: hostname(), + Hostent :: hostent(). gethostbyname(Name) -> gethostbyname_tm(Name, inet, false). --spec gethostbyname(Name :: string() | atom(), Family :: family_option()) -> - {'ok', #hostent{}} | {'error', posix()}. +-spec gethostbyname(Hostname, Family) -> + {ok, Hostent} | {error, posix()} when + Hostname :: hostname(), + Family :: family_option(), + Hostent :: hostent(). gethostbyname(Name,Family) -> gethostbyname_tm(Name, Family, false). --spec gethostbyname(Name :: string() | atom(), +-spec gethostbyname(Name :: hostname(), Family :: family_option(), Timeout :: non_neg_integer() | 'infinity') -> {'ok', #hostent{}} | {'error', posix()}. @@ -439,8 +472,9 @@ gethostbyname_tm(Name,Family,Timer) -> gethostbyname_tm(Name, Family, Timer, Opts). --spec gethostbyaddr(Address :: string() | ip_address()) -> - {'ok', #hostent{}} | {'error', posix()}. +-spec gethostbyaddr(Address) -> {ok, Hostent} | {error, posix()} when + Address :: string() | ip_address(), + Hostent :: hostent(). gethostbyaddr(Address) -> gethostbyaddr_tm(Address, false). @@ -491,14 +525,15 @@ getfd(Socket) -> %% Lookup an ip address %% --spec getaddr(Host :: ip_address() | string() | atom(), - Family :: family_option()) -> - {'ok', ip_address()} | {'error', posix()}. +-spec getaddr(Host, Family) -> {ok, Address} | {error, posix()} when + Host :: ip_address() | hostname(), + Family :: family_option(), + Address :: ip_address(). getaddr(Address, Family) -> getaddr(Address, Family, infinity). --spec getaddr(Host :: ip_address() | string() | atom(), +-spec getaddr(Host :: ip_address() | hostname(), Family :: family_option(), Timeout :: non_neg_integer() | 'infinity') -> {'ok', ip_address()} | {'error', posix()}. @@ -515,9 +550,11 @@ getaddr_tm(Address, Family, Timer) -> Error -> Error end. --spec getaddrs(Host :: ip_address() | string() | atom(), - Family :: family_option()) -> - {'ok', [ip_address()]} | {'error', posix()}. +-spec getaddrs(Host, Family) -> + {ok, Addresses} | {error, posix()} when + Host :: ip_address() | hostname(), + Family :: family_option(), + Addresses :: [ip_address()]. getaddrs(Address, Family) -> getaddrs(Address, Family, infinity). @@ -1237,7 +1274,8 @@ port_list(Name) -> %% utils %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% --spec format_error(posix()) -> string(). +-spec format_error(Posix) -> string() when + Posix :: posix(). format_error(exbadport) -> "invalid port state"; format_error(exbadseq) -> "bad command sequence"; |