IO-Socket-IP-0.41000755001750001750 013730163136 12225 5ustar00leoleo000000000000IO-Socket-IP-0.41/Build.PL000444001750001750 71113730163136 13635 0ustar00leoleo000000000000use v5; use strict; use warnings; use Module::Build; my $build = Module::Build->new( module_name => 'IO::Socket::IP', requires => { 'IO::Socket' => 0, 'Socket' => '1.97', }, test_requires => { 'Test::More' => '0.88', # done_testing }, configure_requires => { 'Module::Build' => '0.4004', # test_requires }, license => 'perl', create_license => 1, create_readme => 1, ); $build->create_build_script; IO-Socket-IP-0.41/Changes000444001750001750 2435713730163136 13710 0ustar00leoleo000000000000Revision history for IO-Socket-IP 0.41 2020-09-15 16:59 [CHANGES] * Updated to `=head2 barename` documentation style [BUGFIXES] * Remember to declare configure_requires Module::Build 0.40 2020-09-15 16:41 [CHANGES] * Don't ship a Makefile.PL * Updated docs about `-register` option [BUGFIXES] * Ensure safety under default-strict (RT133322) 0.39 2017/03/06 16:40:30 [BUGFIXES] * Handle EOPNOTSUPP in response of efforts to disable V6ONLY (RT119780) (thanks XENU) 0.38 2016/08/02 18:33:50 [CHANGES] * Support setting custom socket options with new 'Sockopts' constructor parameter [BUGFIXES] * Restore blocking mode after ->connect errors (RT112334) 0.37 2015/03/12 20:44:07 [CHANGES] * Earlier detection/reporting of erroneous Listen + Peer* argument combination; don't rely on resolveable hostname to do it (RT92930) [BUGFIXES] * Skip t/16v6only.t on irix (RT102662) * Remember to eval() $IO::Socket::VERSION in case it's a devel release (RT101954) * s/Port/LocalPort/ in unit tests (RT96064) 0.36 2014/01/10 20:54:58 [BUGFIXES] * Always bind() on MSWin32 because Windows doesn't like it if we listen() having not done so (RT101396) 0.35 2015/01/02 19:45:20 [BUGFIXES] * Restore blocking mode after timeout connect immediate success (RT100947) * Avoid CORE:: prefixing so global override modules work (RT101174) * Ensure that ->peer{host,port,hostname,service} never die even when unconnected (RT98759) 0.34 2014/12/03 00:04:56 [BUGFIXES] * Don't select() for read-readiness when waiting for non-blocking connect() because it upsets VMS (RT100654) 0.33 2014/11/21 16:17:39 [BUGFIXES] * Use SOL_SOCKET/SO_ERROR sockopt rather than 2nd connect() error hoisting to detect nonblocking connect/failure when implementing Timeout (RT98976) (thanks Arthur Axel 'fREW' Schmidt) 0.32 2014/09/12 10:11:27 [CHANGES] * Implementation of Timeout for ->connect (RT92075) 0.31 2014/07/11 01:24:49 [BUGFIXES] * A better fix for subclassing ->connect (RT95983) because 0.30 broke the way IO::Socket::SSL works (RT97050) 0.30 2014/07/03 23:28:43 [CHANGES] * Invoke $self->connect fully-qualified in case of subclasses with override (RT95983) * Added extra diag() call in t/15io-socket.t (RT96914) 0.29 2014/02/24 16:06:29 [BUGFIXES] * Workaround for OSes that disobey AI_ADDRCONFIG and yield AIs on families the kernel will not support anyway (e.g. HPUX) * Workaround for OSes that lack getprotobyname() (e.g. Android) 0.28 2014/02/10 16:17:59 [CHANGES] * Renamed internal _configure method to _io_socket_ip__configure to avoid clashes with modules that try to subclass IO::Socket::INET [BUGFIXES] * Disable AI_ADDRCONFIG during one-sided 'v6 tests as sometimes it would otherwise fail * Skip the SO_BROADCAST test on OSes that fail with EACCES (RT92502) 0.27 2014/01/20 18:08:31 [BUGFIXES] * Apply a short timeout to unit tests that probe for internet connectivity, in case of bad firewalls, etc... (Perl RT121037) * Defend against machines with IN6ADDR_LOOPBACK not being "::1" in unit tests, similar to the INADDR_LOOPBACK case (RT92295) 0.26 2014/01/16 12:20:02 [CHANGES] * Set $VERSION in BEGIN block before 'use base' so that Acme::Override::INET still works * Various minor improvements to documentation 0.25 2014/01/11 17:19:29 [BUGFIXES] * Allow both *Host with port and *Port arguments, letting port from Host argument take precedence (INET compat) * Ensure that a Host/Family-less constructor still constructs a socket, by using gai()s AI_ADDRCONFIG hint 0.24 2013/09/19 14:17:22 [BUGFIXES] * Defend against INADDR_LOOPBACK not being 127.0.0.1 on machines with odd networking (e.g. FreeBSD jails) during unit testing 0.23 2013/09/11 17:53:19 [BUGFIXES] * Check that kernel actually supports SO_REUSEPORT before unit-testing it (RT86177) 0.22 BUGFIXES: * Always pass 'socktype' hint to getaddrinfo() in unit tests because some OSes get upset without it * Don't unit-test that sockaddr is updated with a local bind() on SOCK_DGRAM sockets because some OSes don't 0.21 CHANGES: * Provide a downgrade method to turn an AF_INET-domain socket into a real IO::Socket::INET instance * Ensure that IO::Socket->new( Domain => ... ) definitely returns a socket in the right family 0.20 CHANGES: * Skip the IPV6_V6ONLY tests on machines lacking that constant * Avoid Socket::inet_pton() in unit tests as Strawberry lacks it * Added ->join_addr * Respect subclassing argument to ->accept 0.19 CHANGES: * More IO::Socket::INET compatibility fixes: + Ensure ->connected is false after ->close + Ensure that IO::Socket::IP->new(Family => $family) still creates an unbound, unconnected socket filehandle 0.18 CHANGES: * Work around ->socktype being undef on IO::Socket versions before 1.35 by fetching ->sockopt( SO_TYPE ) (RT81549) BUGFIXES: * Fix test skip counts in t/21nonblocking-connect-internet.t (RT79393) 0.17 CHANGES: * Only pass AI_ADDRCONFIG as getaddrinfo() flag if no other flags specified, so the caller can disable it if required. BUGFIXES: * Don't count select() invocations during nonblocking unit test because this is too unreliable and races with the kernel/TCP stack 0.16 BUGFIXES: * Don't ->close after all connect attempts fail, because IO::Socket::INET doesn't do that 0.15 BUGFIXES: * (Hopefully) improved ->connect logic for better MSWin32 support * Skip testing AI_NUMERICSERV on OSes that don't support it 0.14 BUGFIXES: * Second attempt at fixing test skip counts 0.13 BUGFIXES: * Updated test skip counts in unit tests so they match the number of tests actually skipped 0.12 CHANGES: * Ensure that all instances have a defined fileno after construction, even in non-blocking mode (RT77726) 0.11 CHANGES: * Ignore unrecognised constructor arguments rather than complaining about their presence (RT77536) * Call $self->connect during constructor because IO::Socket::SSL relies on this to happen (RT77536) 0.10 CHANGES: * Allow specifying other getaddrinfo flags using GetAddrInfoFlags constructor argument (RT75783) * Provide a convenient hostname+port string splitting utility method 0.09 CHANGES: * Attempt to implement IPV6_V6ONLY sockopt wrapper - not all OSes can disable it, so detect and skip those * Provide ->sockaddr and ->peeraddr convenience accessors, same as IO::Socket::INET (RT75071) * Use new NIx_NOHOST and NIx_NOSERV flags to avoid redundant getnameinfo() lookups when only one of host or service name is required * Ensure that errno gets set to EINVAL on getaddrinfo() failures BUGFIXES: * Ignore existing-but-undefined constructor arguments * Avoid locale-specific error message testing of $! * Updates to unit tests for cygwin 0.08 CHANGES: * Depend on Socket 1.95 now a full dual-life release has been made * Set the AI_ADDRCONFIG getaddrinfo hint * Fix some spelling mistakes/typoes * MSWin32 fixes: + MSWin32 uses select() exceptfds rather than writefds to report on nonblocking connect() failure + MSWin32 uses EWOULDBLOCK rather than EINPROGRESS to indicate nonblocking connect() BUGFIXES: * Ensure ->socket protocol argument is always defined * Bugfix for (e.g.) NetBSD, which gets upset at protocol hint without socktype hint to getaddrinfo() * Pass 'type' rather than 'proto' to constructor in t/11sockopts.t to avoid MSWin32 test failures * Localise $1/$2 to placate [perl #67962] 0.07 CHANGES: * Prepare for Socket::getaddrinfo() in core; prefer it to Socket::GetAddrInfo::getaddrinfo() * Implement Family constructor arg * Optional registration with IO::Socket * Documentation rewordings * Bugfix to local socket connect tests - test using blocking rather than nonblocking sockets to guarantee synchronous packet delivery * Bugfix to t/04, t/05 - skip if unable to bind ::1 0.06 CHANGES: * Implement nonblocking connect * Implement LocalAddrInfo and PeerAddrInfo args * Example of nonblocking usage, using Net::LibAsyncNS 0.05 CHANGES: * Implement combined ->bind and ->connect operations * Accept "host:service" as *Addr args, and PeerAddr as sole constructor argument * Accept "name(port)" as service arguments 0.04 CHANGES: * Try to yield the most appropriate connect/bind/socket error * Implement sockhost/peerhost methods to match ::INET, moved hostname methods to sockhostname/peerhostname BUGFIXES: * Work around IO::Socket bug where ->accept'ed sockets do not get ->sockdomain or ->socktype 0.03 CHANGES: * Set $@ to raise error messages from constructor BUGFIXES: * Correctly implement 'Type' constructor argument * Test SO_BROADCAST on udp instead of tcp as some OSes forbid it 0.02 BUGFIXES: * Not all OSes return true sockopts as 1; test simply for non-zero * Gracefully skip IPv6 tests if Socket6 unavailable 0.01 First version, released on an unsuspecting world. IO-Socket-IP-0.41/LICENSE000444001750001750 4376213730163136 13423 0ustar00leoleo000000000000This software is copyright (c) 2020 by Paul Evans . This is free software; you can redistribute it and/or modify it under the same terms as the Perl 5 programming language system itself. Terms of the Perl programming language system itself a) the GNU General Public License as published by the Free Software Foundation; either version 1, or (at your option) any later version, or b) the "Artistic License" --- The GNU General Public License, Version 1, February 1989 --- This software is Copyright (c) 2020 by Paul Evans . This is free software, licensed under: The GNU General Public License, Version 1, February 1989 GNU GENERAL PUBLIC LICENSE Version 1, February 1989 Copyright (C) 1989 Free Software Foundation, Inc. 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA Everyone is permitted to copy and distribute verbatim copies of this license document, but changing it is not allowed. Preamble The license agreements of most software companies try to keep users at the mercy of those companies. By contrast, our General Public License is intended to guarantee your freedom to share and change free software--to make sure the software is free for all its users. The General Public License applies to the Free Software Foundation's software and to any other program whose authors commit to using it. You can use it for your programs, too. When we speak of free software, we are referring to freedom, not price. Specifically, the General Public License is designed to make sure that you have the freedom to give away or sell copies of free software, that you receive source code or can get it if you want it, that you can change the software or use pieces of it in new free programs; and that you know you can do these things. To protect your rights, we need to make restrictions that forbid anyone to deny you these rights or to ask you to surrender the rights. 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The precise terms and conditions for copying, distribution and modification follow. GNU GENERAL PUBLIC LICENSE TERMS AND CONDITIONS FOR COPYING, DISTRIBUTION AND MODIFICATION 0. This License Agreement applies to any program or other work which contains a notice placed by the copyright holder saying it may be distributed under the terms of this General Public License. The "Program", below, refers to any such program or work, and a "work based on the Program" means either the Program or any work containing the Program or a portion of it, either verbatim or with modifications. Each licensee is addressed as "you". 1. 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It is safest to attach them to the start of each source file to most effectively convey the exclusion of warranty; and each file should have at least the "copyright" line and a pointer to where the full notice is found. Copyright (C) 19yy This program is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation; either version 1, or (at your option) any later version. This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. You should have received a copy of the GNU General Public License along with this program; if not, write to the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston MA 02110-1301 USA Also add information on how to contact you by electronic and paper mail. 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Here a sample; alter the names: Yoyodyne, Inc., hereby disclaims all copyright interest in the program `Gnomovision' (a program to direct compilers to make passes at assemblers) written by James Hacker. , 1 April 1989 Ty Coon, President of Vice That's all there is to it! --- The Artistic License 1.0 --- This software is Copyright (c) 2020 by Paul Evans . This is free software, licensed under: The Artistic License 1.0 The Artistic License Preamble The intent of this document is to state the conditions under which a Package may be copied, such that the Copyright Holder maintains some semblance of artistic control over the development of the package, while giving the users of the package the right to use and distribute the Package in a more-or-less customary fashion, plus the right to make reasonable modifications. 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The End IO-Socket-IP-0.41/MANIFEST000444001750001750 105513730163136 13514 0ustar00leoleo000000000000Build.PL Changes examples/connect.pl examples/nonblocking_libasyncns.pl lib/IO/Socket/IP.pm LICENSE MANIFEST This list of files META.json META.yml README t/00use.t t/01local-client-v4.t t/02local-server-v4.t t/03local-cross-v4.t t/04local-client-v6.t t/05local-server-v6.t t/06local-cross-v6.t t/10args.t t/11sockopts.t t/12port-fallback.t t/13addrinfo.t t/14fileno.t t/15io-socket.t t/16v6only.t t/17gai-flags.t t/18fdopen.t t/19no-addrs.t t/20subclass.t t/21as-inet.t t/22timeout.t t/30nonblocking-connect.t t/31nonblocking-connect-internet.t t/99pod.t IO-Socket-IP-0.41/META.json000444001750001750 206513730163136 14006 0ustar00leoleo000000000000{ "abstract" : "Family-neutral IP socket supporting both IPv4 and IPv6", "author" : [ "Paul Evans " ], "dynamic_config" : 1, "generated_by" : "Module::Build version 0.4231", "license" : [ "perl_5" ], "meta-spec" : { "url" : "http://search.cpan.org/perldoc?CPAN::Meta::Spec", "version" : 2 }, "name" : "IO-Socket-IP", "prereqs" : { "configure" : { "requires" : { "Module::Build" : "0.4004" } }, "runtime" : { "requires" : { "IO::Socket" : "0", "Socket" : "1.97" } }, "test" : { "requires" : { "Test::More" : "0.88" } } }, "provides" : { "IO::Socket::IP" : { "file" : "lib/IO/Socket/IP.pm", "version" : "0.41" } }, "release_status" : "stable", "resources" : { "license" : [ "http://dev.perl.org/licenses/" ] }, "version" : "0.41", "x_serialization_backend" : "JSON::PP version 4.05" } IO-Socket-IP-0.41/META.yml000444001750001750 125013730163136 13631 0ustar00leoleo000000000000--- abstract: 'Family-neutral IP socket supporting both IPv4 and IPv6' author: - 'Paul Evans ' build_requires: Test::More: '0.88' configure_requires: Module::Build: '0.4004' dynamic_config: 1 generated_by: 'Module::Build version 0.4231, CPAN::Meta::Converter version 2.150010' license: perl meta-spec: url: http://module-build.sourceforge.net/META-spec-v1.4.html version: '1.4' name: IO-Socket-IP provides: IO::Socket::IP: file: lib/IO/Socket/IP.pm version: '0.41' requires: IO::Socket: '0' Socket: '1.97' resources: license: http://dev.perl.org/licenses/ version: '0.41' x_serialization_backend: 'CPAN::Meta::YAML version 0.018' IO-Socket-IP-0.41/README000444001750001750 4662513730163136 13277 0ustar00leoleo000000000000NAME IO::Socket::IP - Family-neutral IP socket supporting both IPv4 and IPv6 SYNOPSIS use IO::Socket::IP; my $sock = IO::Socket::IP->new( PeerHost => "www.google.com", PeerPort => "http", Type => SOCK_STREAM, ) or die "Cannot construct socket - $@"; my $familyname = ( $sock->sockdomain == PF_INET6 ) ? "IPv6" : ( $sock->sockdomain == PF_INET ) ? "IPv4" : "unknown"; printf "Connected to google via %s\n", $familyname; DESCRIPTION This module provides a protocol-independent way to use IPv4 and IPv6 sockets, intended as a replacement for IO::Socket::INET. Most constructor arguments and methods are provided in a backward-compatible way. For a list of known differences, see the IO::Socket::INET INCOMPATIBILITES section below. It uses the getaddrinfo(3) function to convert hostnames and service names or port numbers into sets of possible addresses to connect to or listen on. This allows it to work for IPv6 where the system supports it, while still falling back to IPv4-only on systems which don't. REPLACING IO::Socket DEFAULT BEHAVIOUR By placing -register in the import list to IO::Socket::IP, it will register itself with IO::Socket as the class that handles PF_INET. It will also ask to handle PF_INET6 as well, provided that constant is available. Changing IO::Socket's default behaviour means that calling the IO::Socket constructor with either PF_INET or PF_INET6 as the Domain parameter will yield an IO::Socket::IP object. use IO::Socket::IP -register; my $sock = IO::Socket->new( Domain => PF_INET6, LocalHost => "::1", Listen => 1, ) or die "Cannot create socket - $@\n"; print "Created a socket of type " . ref($sock) . "\n"; Note that -register is a global setting that applies to the entire program; it cannot be applied only for certain callers, removed, or limited by lexical scope. CONSTRUCTORS new $sock = IO::Socket::IP->new( %args ) Creates a new IO::Socket::IP object, containing a newly created socket handle according to the named arguments passed. The recognised arguments are: PeerHost => STRING PeerService => STRING Hostname and service name for the peer to connect() to. The service name may be given as a port number, as a decimal string. PeerAddr => STRING PeerPort => STRING For symmetry with the accessor methods and compatibility with IO::Socket::INET, these are accepted as synonyms for PeerHost and PeerService respectively. PeerAddrInfo => ARRAY Alternate form of specifying the peer to connect() to. This should be an array of the form returned by Socket::getaddrinfo. This parameter takes precedence over the Peer*, Family, Type and Proto arguments. LocalHost => STRING LocalService => STRING Hostname and service name for the local address to bind() to. LocalAddr => STRING LocalPort => STRING For symmetry with the accessor methods and compatibility with IO::Socket::INET, these are accepted as synonyms for LocalHost and LocalService respectively. LocalAddrInfo => ARRAY Alternate form of specifying the local address to bind() to. This should be an array of the form returned by Socket::getaddrinfo. This parameter takes precedence over the Local*, Family, Type and Proto arguments. Family => INT The address family to pass to getaddrinfo (e.g. AF_INET, AF_INET6). Normally this will be left undefined, and getaddrinfo will search using any address family supported by the system. Type => INT The socket type to pass to getaddrinfo (e.g. SOCK_STREAM, SOCK_DGRAM). Normally defined by the caller; if left undefined getaddrinfo may attempt to infer the type from the service name. Proto => STRING or INT The IP protocol to use for the socket (e.g. 'tcp', IPPROTO_TCP, 'udp',IPPROTO_UDP). Normally this will be left undefined, and either getaddrinfo or the kernel will choose an appropriate value. May be given either in string name or numeric form. GetAddrInfoFlags => INT More flags to pass to the getaddrinfo() function. If not supplied, a default of AI_ADDRCONFIG will be used. These flags will be combined with AI_PASSIVE if the Listen argument is given. For more information see the documentation about getaddrinfo() in the Socket module. Listen => INT If defined, puts the socket into listening mode where new connections can be accepted using the accept method. The value given is used as the listen(2) queue size. ReuseAddr => BOOL If true, set the SO_REUSEADDR sockopt ReusePort => BOOL If true, set the SO_REUSEPORT sockopt (not all OSes implement this sockopt) Broadcast => BOOL If true, set the SO_BROADCAST sockopt Sockopts => ARRAY An optional array of other socket options to apply after the three listed above. The value is an ARRAY containing 2- or 3-element ARRAYrefs. Each inner array relates to a single option, giving the level and option name, and an optional value. If the value element is missing, it will be given the value of a platform-sized integer 1 constant (i.e. suitable to enable most of the common boolean options). For example, both options given below are equivalent to setting ReuseAddr. Sockopts => [ [ SOL_SOCKET, SO_REUSEADDR ], [ SOL_SOCKET, SO_REUSEADDR, pack( "i", 1 ) ], ] V6Only => BOOL If defined, set the IPV6_V6ONLY sockopt when creating PF_INET6 sockets to the given value. If true, a listening-mode socket will only listen on the AF_INET6 addresses; if false it will also accept connections from AF_INET addresses. If not defined, the socket option will not be changed, and default value set by the operating system will apply. For repeatable behaviour across platforms it is recommended this value always be defined for listening-mode sockets. Note that not all platforms support disabling this option. Some, at least OpenBSD and MirBSD, will fail with EINVAL if you attempt to disable it. To determine whether it is possible to disable, you may use the class method if( IO::Socket::IP->CAN_DISABLE_V6ONLY ) { ... } else { ... } If your platform does not support disabling this option but you still want to listen for both AF_INET and AF_INET6 connections you will have to create two listening sockets, one bound to each protocol. MultiHomed This IO::Socket::INET-style argument is ignored, except if it is defined but false. See the IO::Socket::INET INCOMPATIBILITES section below. However, the behaviour it enables is always performed by IO::Socket::IP. Blocking => BOOL If defined but false, the socket will be set to non-blocking mode. Otherwise it will default to blocking mode. See the NON-BLOCKING section below for more detail. Timeout => NUM If defined, gives a maximum time in seconds to block per connect() call when in blocking mode. If missing, no timeout is applied other than that provided by the underlying operating system. When in non-blocking mode this parameter is ignored. Note that if the hostname resolves to multiple address candidates, the same timeout will apply to each connection attempt individually, rather than to the operation as a whole. Further note that the timeout does not apply to the initial hostname resolve operation, if connecting by hostname. This behviour is copied inspired by IO::Socket::INET; for more fine grained control over connection timeouts, consider performing a nonblocking connect directly. If neither Type nor Proto hints are provided, a default of SOCK_STREAM and IPPROTO_TCP respectively will be set, to maintain compatibility with IO::Socket::INET. Other named arguments that are not recognised are ignored. If neither Family nor any hosts or addresses are passed, nor any *AddrInfo, then the constructor has no information on which to decide a socket family to create. In this case, it performs a getaddinfo call with the AI_ADDRCONFIG flag, no host name, and a service name of "0", and uses the family of the first returned result. If the constructor fails, it will set $@ to an appropriate error message; this may be from $! or it may be some other string; not every failure necessarily has an associated errno value. new (one arg) $sock = IO::Socket::IP->new( $peeraddr ) As a special case, if the constructor is passed a single argument (as opposed to an even-sized list of key/value pairs), it is taken to be the value of the PeerAddr parameter. This is parsed in the same way, according to the behaviour given in the PeerHost AND LocalHost PARSING section below. METHODS As well as the following methods, this class inherits all the methods in IO::Socket and IO::Handle. sockhost_service ( $host, $service ) = $sock->sockhost_service( $numeric ) Returns the hostname and service name of the local address (that is, the socket address given by the sockname method). If $numeric is true, these will be given in numeric form rather than being resolved into names. The following four convenience wrappers may be used to obtain one of the two values returned here. If both host and service names are required, this method is preferable to the following wrappers, because it will call getnameinfo(3) only once. sockhost $addr = $sock->sockhost Return the numeric form of the local address as a textual representation sockport $port = $sock->sockport Return the numeric form of the local port number sockhostname $host = $sock->sockhostname Return the resolved name of the local address sockservice $service = $sock->sockservice Return the resolved name of the local port number sockaddr $addr = $sock->sockaddr Return the local address as a binary octet string peerhost_service ( $host, $service ) = $sock->peerhost_service( $numeric ) Returns the hostname and service name of the peer address (that is, the socket address given by the peername method), similar to the sockhost_service method. The following four convenience wrappers may be used to obtain one of the two values returned here. If both host and service names are required, this method is preferable to the following wrappers, because it will call getnameinfo(3) only once. peerhost $addr = $sock->peerhost Return the numeric form of the peer address as a textual representation peerport $port = $sock->peerport Return the numeric form of the peer port number peerhostname $host = $sock->peerhostname Return the resolved name of the peer address peerservice $service = $sock->peerservice Return the resolved name of the peer port number peeraddr $addr = $peer->peeraddr Return the peer address as a binary octet string as_inet $inet = $sock->as_inet Returns a new IO::Socket::INET instance wrapping the same filehandle. This may be useful in cases where it is required, for backward-compatibility, to have a real object of IO::Socket::INET type instead of IO::Socket::IP. The new object will wrap the same underlying socket filehandle as the original, so care should be taken not to continue to use both objects concurrently. Ideally the original $sock should be discarded after this method is called. This method checks that the socket domain is PF_INET and will throw an exception if it isn't. NON-BLOCKING If the constructor is passed a defined but false value for the Blocking argument then the socket is put into non-blocking mode. When in non-blocking mode, the socket will not be set up by the time the constructor returns, because the underlying connect(2) syscall would otherwise have to block. The non-blocking behaviour is an extension of the IO::Socket::INET API, unique to IO::Socket::IP, because the former does not support multi-homed non-blocking connect. When using non-blocking mode, the caller must repeatedly check for writeability on the filehandle (for instance using select or IO::Poll). Each time the filehandle is ready to write, the connect method must be called, with no arguments. Note that some operating systems, most notably MSWin32 do not report a connect() failure using write-ready; so you must also select() for exceptional status. While connect returns false, the value of $! indicates whether it should be tried again (by being set to the value EINPROGRESS, or EWOULDBLOCK on MSWin32), or whether a permanent error has occurred (e.g. ECONNREFUSED). Once the socket has been connected to the peer, connect will return true and the socket will now be ready to use. Note that calls to the platform's underlying getaddrinfo(3) function may block. If IO::Socket::IP has to perform this lookup, the constructor will block even when in non-blocking mode. To avoid this blocking behaviour, the caller should pass in the result of such a lookup using the PeerAddrInfo or LocalAddrInfo arguments. This can be achieved by using Net::LibAsyncNS, or the getaddrinfo(3) function can be called in a child process. use IO::Socket::IP; use Errno qw( EINPROGRESS EWOULDBLOCK ); my @peeraddrinfo = ... # Caller must obtain the getaddinfo result here my $socket = IO::Socket::IP->new( PeerAddrInfo => \@peeraddrinfo, Blocking => 0, ) or die "Cannot construct socket - $@"; while( !$socket->connect and ( $! == EINPROGRESS || $! == EWOULDBLOCK ) ) { my $wvec = ''; vec( $wvec, fileno $socket, 1 ) = 1; my $evec = ''; vec( $evec, fileno $socket, 1 ) = 1; select( undef, $wvec, $evec, undef ) or die "Cannot select - $!"; } die "Cannot connect - $!" if $!; ... The example above uses select(), but any similar mechanism should work analogously. IO::Socket::IP takes care when creating new socket filehandles to preserve the actual file descriptor number, so such techniques as poll or epoll should be transparent to its reallocation of a different socket underneath, perhaps in order to switch protocol family between PF_INET and PF_INET6. For another example using IO::Poll and Net::LibAsyncNS, see the examples/nonblocking_libasyncns.pl file in the module distribution. PeerHost AND LocalHost PARSING To support the IO::Socket::INET API, the host and port information may be passed in a single string rather than as two separate arguments. If either LocalHost or PeerHost (or their ...Addr synonyms) have any of the following special forms then special parsing is applied. The value of the ...Host argument will be split to give both the hostname and port (or service name): hostname.example.org:http # Host name 192.0.2.1:80 # IPv4 address [2001:db8::1]:80 # IPv6 address In each case, the port or service name (e.g. 80) is passed as the LocalService or PeerService argument. Either of LocalService or PeerService (or their ...Port synonyms) can be either a service name, a decimal number, or a string containing both a service name and number, in a form such as http(80) In this case, the name (http) will be tried first, but if the resolver does not understand it then the port number (80) will be used instead. If the ...Host argument is in this special form and the corresponding ...Service or ...Port argument is also defined, the one parsed from the ...Host argument will take precedence and the other will be ignored. split_addr ( $host, $port ) = IO::Socket::IP->split_addr( $addr ) Utility method that provides the parsing functionality described above. Returns a 2-element list, containing either the split hostname and port description if it could be parsed, or the given address and undef if it was not recognised. IO::Socket::IP->split_addr( "hostname:http" ) # ( "hostname", "http" ) IO::Socket::IP->split_addr( "192.0.2.1:80" ) # ( "192.0.2.1", "80" ) IO::Socket::IP->split_addr( "[2001:db8::1]:80" ) # ( "2001:db8::1", "80" ) IO::Socket::IP->split_addr( "something.else" ) # ( "something.else", undef ) join_addr $addr = IO::Socket::IP->join_addr( $host, $port ) Utility method that performs the reverse of split_addr, returning a string formed by joining the specified host address and port number. The host address will be wrapped in [] brackets if required (because it is a raw IPv6 numeric address). This can be especially useful when combined with the sockhost_service or peerhost_service methods. say "Connected to ", IO::Socket::IP->join_addr( $sock->peerhost_service ); IO::Socket::INET INCOMPATIBILITES * The behaviour enabled by MultiHomed is in fact implemented by IO::Socket::IP as it is required to correctly support searching for a useable address from the results of the getaddrinfo(3) call. The constructor will ignore the value of this argument, except if it is defined but false. An exception is thrown in this case, because that would request it disable the getaddrinfo(3) search behaviour in the first place. * IO::Socket::IP implements both the Blocking and Timeout parameters, but it implements the interaction of both in a different way. In ::INET, supplying a timeout overrides the non-blocking behaviour, meaning that the connect() operation will still block despite that the caller asked for a non-blocking socket. This is not explicitly specified in its documentation, nor does this author believe that is a useful behaviour - it appears to come from a quirk of implementation. In ::IP therefore, the Blocking parameter takes precedence - if a non-blocking socket is requested, no operation will block. The Timeout parameter here simply defines the maximum time that a blocking connect() call will wait, if it blocks at all. In order to specifically obtain the "blocking connect then non-blocking send and receive" behaviour of specifying this combination of options to ::INET when using ::IP, perform first a blocking connect, then afterwards turn the socket into nonblocking mode. my $sock = IO::Socket::IP->new( PeerHost => $peer, Timeout => 20, ) or die "Cannot connect - $@"; $sock->blocking( 0 ); This code will behave identically under both IO::Socket::INET and IO::Socket::IP. TODO * Investigate whether POSIX::dup2 upsets BSD's kqueue watchers, and if so, consider what possible workarounds might be applied. AUTHOR Paul Evans IO-Socket-IP-0.41/examples000755001750001750 013730163136 14043 5ustar00leoleo000000000000IO-Socket-IP-0.41/examples/connect.pl000444001750001750 210313730163136 16162 0ustar00leoleo000000000000#!/usr/bin/perl use strict; use warnings; use IO::Poll; use IO::Socket::IP; use Socket qw( SOCK_STREAM ); use Getopt::Long; GetOptions( 'timeout=f' => \my $TIMEOUT, ) or exit 1; my $host = shift @ARGV or die "Need HOST\n"; my $service = shift @ARGV or die "Need SERVICE\n"; my $socket = IO::Socket::IP->new( PeerHost => $host, PeerService => $service, Type => SOCK_STREAM, Timeout => $TIMEOUT, ) or die "Cannot connect to $host:$service - $@"; printf STDERR "Connected to %s:%s\n", $socket->peerhost_service; my $poll = IO::Poll->new; $poll->mask( \*STDIN => POLLIN ); $poll->mask( $socket => POLLIN ); while(1) { $poll->poll( undef ); if( $poll->events( \*STDIN ) ) { my $ret = STDIN->sysread( my $buffer, 8192 ); defined $ret or die "Cannot read STDIN - $!\n"; $ret or last; $socket->syswrite( $buffer ); } if( $poll->events( $socket ) ) { my $ret = $socket->sysread( my $buffer, 8192 ); defined $ret or die "Cannot read socket - $!\n"; $ret or last; STDOUT->syswrite( $buffer ); } } IO-Socket-IP-0.41/examples/nonblocking_libasyncns.pl000444001750001750 322213730163136 21264 0ustar00leoleo000000000000#!/usr/bin/perl use strict; use warnings; use Errno qw( EINPROGRESS ); use IO::Poll; use IO::Socket::IP; use Net::LibAsyncNS; use Socket qw( SOCK_STREAM ); my $host = shift @ARGV or die "Need HOST\n"; my $service = shift @ARGV or die "Need SERVICE\n"; my $poll = IO::Poll->new; my $asyncns = Net::LibAsyncNS->new( 1 ); my $asyncns_fh = $asyncns->new_handle_for_fd; my $q = $asyncns->getaddrinfo( $host, $service, { socktype => SOCK_STREAM } ); $poll->mask( $asyncns_fh => POLLIN ); while( !$q->isdone ) { $poll->poll( undef ); if( $poll->events( $asyncns_fh ) ) { $asyncns->wait( 0 ); } } $poll->mask( $asyncns_fh => 0 ); my ( $err, @peeraddrinfo ) = $asyncns->getaddrinfo_done( $q ); $err and die "getaddrinfo() - $!"; my $socket = IO::Socket::IP->new( PeerAddrInfo => \@peeraddrinfo, Blocking => 0, ) or die "Cannot construct socket - $@"; $poll->mask( $socket => POLLOUT ); while(1) { $poll->poll( undef ); if( $poll->events( $socket ) & POLLOUT ) { last if $socket->connect; die "Cannot connect - $!" unless $! == EINPROGRESS; } } printf STDERR "Connected to %s:%s\n", $socket->peerhost_service; $poll->mask( \*STDIN => POLLIN ); $poll->mask( $socket => POLLIN ); while(1) { $poll->poll( undef ); if( $poll->events( \*STDIN ) ) { my $ret = STDIN->sysread( my $buffer, 8192 ); defined $ret or die "Cannot read STDIN - $!\n"; $ret or last; $socket->syswrite( $buffer ); } if( $poll->events( $socket ) ) { my $ret = $socket->sysread( my $buffer, 8192 ); defined $ret or die "Cannot read socket - $!\n"; $ret or last; STDOUT->syswrite( $buffer ); } } IO-Socket-IP-0.41/lib000755001750001750 013730163136 12773 5ustar00leoleo000000000000IO-Socket-IP-0.41/lib/IO000755001750001750 013730163136 13302 5ustar00leoleo000000000000IO-Socket-IP-0.41/lib/IO/Socket000755001750001750 013730163136 14532 5ustar00leoleo000000000000IO-Socket-IP-0.41/lib/IO/Socket/IP.pm000555001750001750 11676413730163136 15617 0ustar00leoleo000000000000# You may distribute under the terms of either the GNU General Public License # or the Artistic License (the same terms as Perl itself) # # (C) Paul Evans, 2010-2020 -- leonerd@leonerd.org.uk package IO::Socket::IP; use v5; use strict; use warnings; # $VERSION needs to be set before use base 'IO::Socket' # - https://rt.cpan.org/Ticket/Display.html?id=92107 BEGIN { our $VERSION = '0.41'; } use base qw( IO::Socket ); use Carp; use Socket 1.97 qw( getaddrinfo getnameinfo sockaddr_family AF_INET AI_PASSIVE IPPROTO_TCP IPPROTO_UDP IPPROTO_IPV6 IPV6_V6ONLY NI_DGRAM NI_NUMERICHOST NI_NUMERICSERV NIx_NOHOST NIx_NOSERV SO_REUSEADDR SO_REUSEPORT SO_BROADCAST SO_ERROR SOCK_DGRAM SOCK_STREAM SOL_SOCKET ); my $AF_INET6 = eval { Socket::AF_INET6() }; # may not be defined my $AI_ADDRCONFIG = eval { Socket::AI_ADDRCONFIG() } || 0; use POSIX qw( dup2 ); use Errno qw( EINVAL EINPROGRESS EISCONN ENOTCONN ETIMEDOUT EWOULDBLOCK EOPNOTSUPP ); use constant HAVE_MSWIN32 => ( $^O eq "MSWin32" ); # At least one OS (Android) is known not to have getprotobyname() use constant HAVE_GETPROTOBYNAME => defined eval { getprotobyname( "tcp" ) }; my $IPv6_re = do { # translation of RFC 3986 3.2.2 ABNF to re my $IPv4address = do { my $dec_octet = q<(?:[0-9]|[1-9][0-9]|1[0-9][0-9]|2[0-4][0-9]|25[0-5])>; qq<$dec_octet(?: \\. $dec_octet){3}>; }; my $IPv6address = do { my $h16 = qq<[0-9A-Fa-f]{1,4}>; my $ls32 = qq<(?: $h16 : $h16 | $IPv4address)>; qq<(?: (?: $h16 : ){6} $ls32 | :: (?: $h16 : ){5} $ls32 | (?: $h16 )? :: (?: $h16 : ){4} $ls32 | (?: (?: $h16 : ){0,1} $h16 )? :: (?: $h16 : ){3} $ls32 | (?: (?: $h16 : ){0,2} $h16 )? :: (?: $h16 : ){2} $ls32 | (?: (?: $h16 : ){0,3} $h16 )? :: $h16 : $ls32 | (?: (?: $h16 : ){0,4} $h16 )? :: $ls32 | (?: (?: $h16 : ){0,5} $h16 )? :: $h16 | (?: (?: $h16 : ){0,6} $h16 )? :: )> }; qr<$IPv6address>xo; }; =head1 NAME C - Family-neutral IP socket supporting both IPv4 and IPv6 =head1 SYNOPSIS use IO::Socket::IP; my $sock = IO::Socket::IP->new( PeerHost => "www.google.com", PeerPort => "http", Type => SOCK_STREAM, ) or die "Cannot construct socket - $@"; my $familyname = ( $sock->sockdomain == PF_INET6 ) ? "IPv6" : ( $sock->sockdomain == PF_INET ) ? "IPv4" : "unknown"; printf "Connected to google via %s\n", $familyname; =head1 DESCRIPTION This module provides a protocol-independent way to use IPv4 and IPv6 sockets, intended as a replacement for L. Most constructor arguments and methods are provided in a backward-compatible way. For a list of known differences, see the C INCOMPATIBILITES section below. It uses the C function to convert hostnames and service names or port numbers into sets of possible addresses to connect to or listen on. This allows it to work for IPv6 where the system supports it, while still falling back to IPv4-only on systems which don't. =head1 REPLACING C DEFAULT BEHAVIOUR By placing C<-register> in the import list to C, it will register itself with L as the class that handles C. It will also ask to handle C as well, provided that constant is available. Changing C's default behaviour means that calling the C constructor with either C or C as the C parameter will yield an C object. use IO::Socket::IP -register; my $sock = IO::Socket->new( Domain => PF_INET6, LocalHost => "::1", Listen => 1, ) or die "Cannot create socket - $@\n"; print "Created a socket of type " . ref($sock) . "\n"; Note that C<-register> is a global setting that applies to the entire program; it cannot be applied only for certain callers, removed, or limited by lexical scope. =cut sub import { my $pkg = shift; my @symbols; foreach ( @_ ) { if( $_ eq "-register" ) { IO::Socket::IP::_ForINET->register_domain( AF_INET ); IO::Socket::IP::_ForINET6->register_domain( $AF_INET6 ) if defined $AF_INET6; } else { push @symbols, $_; } } @_ = ( $pkg, @symbols ); goto &IO::Socket::import; } # Convenient capability test function { my $can_disable_v6only; sub CAN_DISABLE_V6ONLY { return $can_disable_v6only if defined $can_disable_v6only; socket my $testsock, Socket::PF_INET6(), SOCK_STREAM, 0 or die "Cannot socket(PF_INET6) - $!"; if( setsockopt $testsock, IPPROTO_IPV6, IPV6_V6ONLY, 0 ) { return $can_disable_v6only = 1; } elsif( $! == EINVAL || $! == EOPNOTSUPP ) { return $can_disable_v6only = 0; } else { die "Cannot setsockopt() - $!"; } } } =head1 CONSTRUCTORS =cut =head2 new $sock = IO::Socket::IP->new( %args ) Creates a new C object, containing a newly created socket handle according to the named arguments passed. The recognised arguments are: =over 8 =item PeerHost => STRING =item PeerService => STRING Hostname and service name for the peer to C to. The service name may be given as a port number, as a decimal string. =item PeerAddr => STRING =item PeerPort => STRING For symmetry with the accessor methods and compatibility with C, these are accepted as synonyms for C and C respectively. =item PeerAddrInfo => ARRAY Alternate form of specifying the peer to C to. This should be an array of the form returned by C. This parameter takes precedence over the C, C, C and C arguments. =item LocalHost => STRING =item LocalService => STRING Hostname and service name for the local address to C to. =item LocalAddr => STRING =item LocalPort => STRING For symmetry with the accessor methods and compatibility with C, these are accepted as synonyms for C and C respectively. =item LocalAddrInfo => ARRAY Alternate form of specifying the local address to C to. This should be an array of the form returned by C. This parameter takes precedence over the C, C, C and C arguments. =item Family => INT The address family to pass to C (e.g. C, C). Normally this will be left undefined, and C will search using any address family supported by the system. =item Type => INT The socket type to pass to C (e.g. C, C). Normally defined by the caller; if left undefined C may attempt to infer the type from the service name. =item Proto => STRING or INT The IP protocol to use for the socket (e.g. C<'tcp'>, C, C<'udp'>,C). Normally this will be left undefined, and either C or the kernel will choose an appropriate value. May be given either in string name or numeric form. =item GetAddrInfoFlags => INT More flags to pass to the C function. If not supplied, a default of C will be used. These flags will be combined with C if the C argument is given. For more information see the documentation about C in the L module. =item Listen => INT If defined, puts the socket into listening mode where new connections can be accepted using the C method. The value given is used as the C queue size. =item ReuseAddr => BOOL If true, set the C sockopt =item ReusePort => BOOL If true, set the C sockopt (not all OSes implement this sockopt) =item Broadcast => BOOL If true, set the C sockopt =item Sockopts => ARRAY An optional array of other socket options to apply after the three listed above. The value is an ARRAY containing 2- or 3-element ARRAYrefs. Each inner array relates to a single option, giving the level and option name, and an optional value. If the value element is missing, it will be given the value of a platform-sized integer 1 constant (i.e. suitable to enable most of the common boolean options). For example, both options given below are equivalent to setting C. Sockopts => [ [ SOL_SOCKET, SO_REUSEADDR ], [ SOL_SOCKET, SO_REUSEADDR, pack( "i", 1 ) ], ] =item V6Only => BOOL If defined, set the C sockopt when creating C sockets to the given value. If true, a listening-mode socket will only listen on the C addresses; if false it will also accept connections from C addresses. If not defined, the socket option will not be changed, and default value set by the operating system will apply. For repeatable behaviour across platforms it is recommended this value always be defined for listening-mode sockets. Note that not all platforms support disabling this option. Some, at least OpenBSD and MirBSD, will fail with C if you attempt to disable it. To determine whether it is possible to disable, you may use the class method if( IO::Socket::IP->CAN_DISABLE_V6ONLY ) { ... } else { ... } If your platform does not support disabling this option but you still want to listen for both C and C connections you will have to create two listening sockets, one bound to each protocol. =item MultiHomed This C-style argument is ignored, except if it is defined but false. See the C INCOMPATIBILITES section below. However, the behaviour it enables is always performed by C. =item Blocking => BOOL If defined but false, the socket will be set to non-blocking mode. Otherwise it will default to blocking mode. See the NON-BLOCKING section below for more detail. =item Timeout => NUM If defined, gives a maximum time in seconds to block per C call when in blocking mode. If missing, no timeout is applied other than that provided by the underlying operating system. When in non-blocking mode this parameter is ignored. Note that if the hostname resolves to multiple address candidates, the same timeout will apply to each connection attempt individually, rather than to the operation as a whole. Further note that the timeout does not apply to the initial hostname resolve operation, if connecting by hostname. This behviour is copied inspired by C; for more fine grained control over connection timeouts, consider performing a nonblocking connect directly. =back If neither C nor C hints are provided, a default of C and C respectively will be set, to maintain compatibility with C. Other named arguments that are not recognised are ignored. If neither C nor any hosts or addresses are passed, nor any C<*AddrInfo>, then the constructor has no information on which to decide a socket family to create. In this case, it performs a C call with the C flag, no host name, and a service name of C<"0">, and uses the family of the first returned result. If the constructor fails, it will set C<$@> to an appropriate error message; this may be from C<$!> or it may be some other string; not every failure necessarily has an associated C value. =head2 new (one arg) $sock = IO::Socket::IP->new( $peeraddr ) As a special case, if the constructor is passed a single argument (as opposed to an even-sized list of key/value pairs), it is taken to be the value of the C parameter. This is parsed in the same way, according to the behaviour given in the C AND C PARSING section below. =cut sub new { my $class = shift; my %arg = (@_ == 1) ? (PeerHost => $_[0]) : @_; return $class->SUPER::new(%arg); } # IO::Socket may call this one; neaten up the arguments from IO::Socket::INET # before calling our real _configure method sub configure { my $self = shift; my ( $arg ) = @_; $arg->{PeerHost} = delete $arg->{PeerAddr} if exists $arg->{PeerAddr} && !exists $arg->{PeerHost}; $arg->{PeerService} = delete $arg->{PeerPort} if exists $arg->{PeerPort} && !exists $arg->{PeerService}; $arg->{LocalHost} = delete $arg->{LocalAddr} if exists $arg->{LocalAddr} && !exists $arg->{LocalHost}; $arg->{LocalService} = delete $arg->{LocalPort} if exists $arg->{LocalPort} && !exists $arg->{LocalService}; for my $type (qw(Peer Local)) { my $host = $type . 'Host'; my $service = $type . 'Service'; if( defined $arg->{$host} ) { ( $arg->{$host}, my $s ) = $self->split_addr( $arg->{$host} ); # IO::Socket::INET compat - *Host parsed port always takes precedence $arg->{$service} = $s if defined $s; } } $self->_io_socket_ip__configure( $arg ); } # Avoid simply calling it _configure, as some subclasses of IO::Socket::INET on CPAN already take that sub _io_socket_ip__configure { my $self = shift; my ( $arg ) = @_; my %hints; my @localinfos; my @peerinfos; my $listenqueue = $arg->{Listen}; if( defined $listenqueue and ( defined $arg->{PeerHost} || defined $arg->{PeerService} || defined $arg->{PeerAddrInfo} ) ) { croak "Cannot Listen with a peer address"; } if( defined $arg->{GetAddrInfoFlags} ) { $hints{flags} = $arg->{GetAddrInfoFlags}; } else { $hints{flags} = $AI_ADDRCONFIG; } if( defined( my $family = $arg->{Family} ) ) { $hints{family} = $family; } if( defined( my $type = $arg->{Type} ) ) { $hints{socktype} = $type; } if( defined( my $proto = $arg->{Proto} ) ) { unless( $proto =~ m/^\d+$/ ) { my $protonum = HAVE_GETPROTOBYNAME ? getprotobyname( $proto ) : eval { Socket->${\"IPPROTO_\U$proto"}() }; defined $protonum or croak "Unrecognised protocol $proto"; $proto = $protonum; } $hints{protocol} = $proto; } # To maintain compatibility with IO::Socket::INET, imply a default of # SOCK_STREAM + IPPROTO_TCP if neither hint is given if( !defined $hints{socktype} and !defined $hints{protocol} ) { $hints{socktype} = SOCK_STREAM; $hints{protocol} = IPPROTO_TCP; } # Some OSes (NetBSD) don't seem to like just a protocol hint without a # socktype hint as well. We'll set a couple of common ones if( !defined $hints{socktype} and defined $hints{protocol} ) { $hints{socktype} = SOCK_STREAM if $hints{protocol} == IPPROTO_TCP; $hints{socktype} = SOCK_DGRAM if $hints{protocol} == IPPROTO_UDP; } if( my $info = $arg->{LocalAddrInfo} ) { ref $info eq "ARRAY" or croak "Expected 'LocalAddrInfo' to be an ARRAY ref"; @localinfos = @$info; } elsif( defined $arg->{LocalHost} or defined $arg->{LocalService} or HAVE_MSWIN32 and $arg->{Listen} ) { # Either may be undef my $host = $arg->{LocalHost}; my $service = $arg->{LocalService}; unless ( defined $host or defined $service ) { $service = 0; } local $1; # Placate a taint-related bug; [perl #67962] defined $service and $service =~ s/\((\d+)\)$// and my $fallback_port = $1; my %localhints = %hints; $localhints{flags} |= AI_PASSIVE; ( my $err, @localinfos ) = getaddrinfo( $host, $service, \%localhints ); if( $err and defined $fallback_port ) { ( $err, @localinfos ) = getaddrinfo( $host, $fallback_port, \%localhints ); } if( $err ) { $@ = "$err"; $! = EINVAL; return; } } if( my $info = $arg->{PeerAddrInfo} ) { ref $info eq "ARRAY" or croak "Expected 'PeerAddrInfo' to be an ARRAY ref"; @peerinfos = @$info; } elsif( defined $arg->{PeerHost} or defined $arg->{PeerService} ) { defined( my $host = $arg->{PeerHost} ) or croak "Expected 'PeerHost'"; defined( my $service = $arg->{PeerService} ) or croak "Expected 'PeerService'"; local $1; # Placate a taint-related bug; [perl #67962] defined $service and $service =~ s/\((\d+)\)$// and my $fallback_port = $1; ( my $err, @peerinfos ) = getaddrinfo( $host, $service, \%hints ); if( $err and defined $fallback_port ) { ( $err, @peerinfos ) = getaddrinfo( $host, $fallback_port, \%hints ); } if( $err ) { $@ = "$err"; $! = EINVAL; return; } } my $INT_1 = pack "i", 1; my @sockopts_enabled; push @sockopts_enabled, [ SOL_SOCKET, SO_REUSEADDR, $INT_1 ] if $arg->{ReuseAddr}; push @sockopts_enabled, [ SOL_SOCKET, SO_REUSEPORT, $INT_1 ] if $arg->{ReusePort}; push @sockopts_enabled, [ SOL_SOCKET, SO_BROADCAST, $INT_1 ] if $arg->{Broadcast}; if( my $sockopts = $arg->{Sockopts} ) { ref $sockopts eq "ARRAY" or croak "Expected 'Sockopts' to be an ARRAY ref"; foreach ( @$sockopts ) { ref $_ eq "ARRAY" or croak "Bad Sockopts item - expected ARRAYref"; @$_ >= 2 and @$_ <= 3 or croak "Bad Sockopts item - expected 2 or 3 elements"; my ( $level, $optname, $value ) = @$_; # TODO: consider more sanity checking on argument values defined $value or $value = $INT_1; push @sockopts_enabled, [ $level, $optname, $value ]; } } my $blocking = $arg->{Blocking}; defined $blocking or $blocking = 1; my $v6only = $arg->{V6Only}; # IO::Socket::INET defines this key. IO::Socket::IP always implements the # behaviour it requests, so we can ignore it, unless the caller is for some # reason asking to disable it. if( defined $arg->{MultiHomed} and !$arg->{MultiHomed} ) { croak "Cannot disable the MultiHomed parameter"; } my @infos; foreach my $local ( @localinfos ? @localinfos : {} ) { foreach my $peer ( @peerinfos ? @peerinfos : {} ) { next if defined $local->{family} and defined $peer->{family} and $local->{family} != $peer->{family}; next if defined $local->{socktype} and defined $peer->{socktype} and $local->{socktype} != $peer->{socktype}; next if defined $local->{protocol} and defined $peer->{protocol} and $local->{protocol} != $peer->{protocol}; my $family = $local->{family} || $peer->{family} or next; my $socktype = $local->{socktype} || $peer->{socktype} or next; my $protocol = $local->{protocol} || $peer->{protocol} || 0; push @infos, { family => $family, socktype => $socktype, protocol => $protocol, localaddr => $local->{addr}, peeraddr => $peer->{addr}, }; } } if( !@infos ) { # If there was a Family hint then create a plain unbound, unconnected socket if( defined $hints{family} ) { @infos = ( { family => $hints{family}, socktype => $hints{socktype}, protocol => $hints{protocol}, } ); } # If there wasn't, use getaddrinfo()'s AI_ADDRCONFIG side-effect to guess a # suitable family first. else { ( my $err, @infos ) = getaddrinfo( "", "0", \%hints ); if( $err ) { $@ = "$err"; $! = EINVAL; return; } # We'll take all the @infos anyway, because some OSes (HPUX) are known to # ignore the AI_ADDRCONFIG hint and return AF_INET6 even if they don't # support them } } # In the nonblocking case, caller will be calling ->setup multiple times. # Store configuration in the object for the ->setup method # Yes, these are messy. Sorry, I can't help that... ${*$self}{io_socket_ip_infos} = \@infos; ${*$self}{io_socket_ip_idx} = -1; ${*$self}{io_socket_ip_sockopts} = \@sockopts_enabled; ${*$self}{io_socket_ip_v6only} = $v6only; ${*$self}{io_socket_ip_listenqueue} = $listenqueue; ${*$self}{io_socket_ip_blocking} = $blocking; ${*$self}{io_socket_ip_errors} = [ undef, undef, undef ]; # ->setup is allowed to return false in nonblocking mode $self->setup or !$blocking or return undef; return $self; } sub setup { my $self = shift; while(1) { ${*$self}{io_socket_ip_idx}++; last if ${*$self}{io_socket_ip_idx} >= @{ ${*$self}{io_socket_ip_infos} }; my $info = ${*$self}{io_socket_ip_infos}->[${*$self}{io_socket_ip_idx}]; $self->socket( @{$info}{qw( family socktype protocol )} ) or ( ${*$self}{io_socket_ip_errors}[2] = $!, next ); $self->blocking( 0 ) unless ${*$self}{io_socket_ip_blocking}; foreach my $sockopt ( @{ ${*$self}{io_socket_ip_sockopts} } ) { my ( $level, $optname, $value ) = @$sockopt; $self->setsockopt( $level, $optname, $value ) or ( $@ = "$!", return undef ); } if( defined ${*$self}{io_socket_ip_v6only} and defined $AF_INET6 and $info->{family} == $AF_INET6 ) { my $v6only = ${*$self}{io_socket_ip_v6only}; $self->setsockopt( IPPROTO_IPV6, IPV6_V6ONLY, pack "i", $v6only ) or ( $@ = "$!", return undef ); } if( defined( my $addr = $info->{localaddr} ) ) { $self->bind( $addr ) or ( ${*$self}{io_socket_ip_errors}[1] = $!, next ); } if( defined( my $listenqueue = ${*$self}{io_socket_ip_listenqueue} ) ) { $self->listen( $listenqueue ) or ( $@ = "$!", return undef ); } if( defined( my $addr = $info->{peeraddr} ) ) { if( $self->connect( $addr ) ) { $! = 0; return 1; } if( $! == EINPROGRESS or $! == EWOULDBLOCK ) { ${*$self}{io_socket_ip_connect_in_progress} = 1; return 0; } # If connect failed but we have no system error there must be an error # at the application layer, like a bad certificate with # IO::Socket::SSL. # In this case don't continue IP based multi-homing because the problem # cannot be solved at the IP layer. return 0 if ! $!; ${*$self}{io_socket_ip_errors}[0] = $!; next; } return 1; } # Pick the most appropriate error, stringified $! = ( grep defined, @{ ${*$self}{io_socket_ip_errors}} )[0]; $@ = "$!"; return undef; } sub connect :method { my $self = shift; # It seems that IO::Socket hides EINPROGRESS errors, making them look like # a success. This is annoying here. # Instead of putting up with its frankly-irritating intentional breakage of # useful APIs I'm just going to end-run around it and call core's connect() # directly if( @_ ) { my ( $addr ) = @_; # Annoyingly IO::Socket's connect() is where the timeout logic is # implemented, so we'll have to reinvent it here my $timeout = ${*$self}{'io_socket_timeout'}; return connect( $self, $addr ) unless defined $timeout; my $was_blocking = $self->blocking( 0 ); my $err = defined connect( $self, $addr ) ? 0 : $!+0; if( !$err ) { # All happy $self->blocking( $was_blocking ); return 1; } elsif( not( $err == EINPROGRESS or $err == EWOULDBLOCK ) ) { # Failed for some other reason $self->blocking( $was_blocking ); return undef; } elsif( !$was_blocking ) { # We shouldn't block anyway return undef; } my $vec = ''; vec( $vec, $self->fileno, 1 ) = 1; if( !select( undef, $vec, $vec, $timeout ) ) { $self->blocking( $was_blocking ); $! = ETIMEDOUT; return undef; } # Hoist the error by connect()ing a second time $err = $self->getsockopt( SOL_SOCKET, SO_ERROR ); $err = 0 if $err == EISCONN; # Some OSes give EISCONN $self->blocking( $was_blocking ); $! = $err, return undef if $err; return 1; } return 1 if !${*$self}{io_socket_ip_connect_in_progress}; # See if a connect attempt has just failed with an error if( my $errno = $self->getsockopt( SOL_SOCKET, SO_ERROR ) ) { delete ${*$self}{io_socket_ip_connect_in_progress}; ${*$self}{io_socket_ip_errors}[0] = $! = $errno; return $self->setup; } # No error, so either connect is still in progress, or has completed # successfully. We can tell by trying to connect() again; either it will # succeed or we'll get EISCONN (connected successfully), or EALREADY # (still in progress). This even works on MSWin32. my $addr = ${*$self}{io_socket_ip_infos}[${*$self}{io_socket_ip_idx}]{peeraddr}; if( connect( $self, $addr ) or $! == EISCONN ) { delete ${*$self}{io_socket_ip_connect_in_progress}; $! = 0; return 1; } else { $! = EINPROGRESS; return 0; } } sub connected { my $self = shift; return defined $self->fileno && !${*$self}{io_socket_ip_connect_in_progress} && defined getpeername( $self ); # ->peername caches, we need to detect disconnection } =head1 METHODS As well as the following methods, this class inherits all the methods in L and L. =cut sub _get_host_service { my $self = shift; my ( $addr, $flags, $xflags ) = @_; defined $addr or $! = ENOTCONN, return; $flags |= NI_DGRAM if $self->socktype == SOCK_DGRAM; my ( $err, $host, $service ) = getnameinfo( $addr, $flags, $xflags || 0 ); croak "getnameinfo - $err" if $err; return ( $host, $service ); } sub _unpack_sockaddr { my ( $addr ) = @_; my $family = sockaddr_family $addr; if( $family == AF_INET ) { return ( Socket::unpack_sockaddr_in( $addr ) )[1]; } elsif( defined $AF_INET6 and $family == $AF_INET6 ) { return ( Socket::unpack_sockaddr_in6( $addr ) )[1]; } else { croak "Unrecognised address family $family"; } } =head2 sockhost_service ( $host, $service ) = $sock->sockhost_service( $numeric ) Returns the hostname and service name of the local address (that is, the socket address given by the C method). If C<$numeric> is true, these will be given in numeric form rather than being resolved into names. The following four convenience wrappers may be used to obtain one of the two values returned here. If both host and service names are required, this method is preferable to the following wrappers, because it will call C only once. =cut sub sockhost_service { my $self = shift; my ( $numeric ) = @_; $self->_get_host_service( $self->sockname, $numeric ? NI_NUMERICHOST|NI_NUMERICSERV : 0 ); } =head2 sockhost $addr = $sock->sockhost Return the numeric form of the local address as a textual representation =head2 sockport $port = $sock->sockport Return the numeric form of the local port number =head2 sockhostname $host = $sock->sockhostname Return the resolved name of the local address =head2 sockservice $service = $sock->sockservice Return the resolved name of the local port number =cut sub sockhost { my $self = shift; scalar +( $self->_get_host_service( $self->sockname, NI_NUMERICHOST, NIx_NOSERV ) )[0] } sub sockport { my $self = shift; scalar +( $self->_get_host_service( $self->sockname, NI_NUMERICSERV, NIx_NOHOST ) )[1] } sub sockhostname { my $self = shift; scalar +( $self->_get_host_service( $self->sockname, 0, NIx_NOSERV ) )[0] } sub sockservice { my $self = shift; scalar +( $self->_get_host_service( $self->sockname, 0, NIx_NOHOST ) )[1] } =head2 sockaddr $addr = $sock->sockaddr Return the local address as a binary octet string =cut sub sockaddr { my $self = shift; _unpack_sockaddr $self->sockname } =head2 peerhost_service ( $host, $service ) = $sock->peerhost_service( $numeric ) Returns the hostname and service name of the peer address (that is, the socket address given by the C method), similar to the C method. The following four convenience wrappers may be used to obtain one of the two values returned here. If both host and service names are required, this method is preferable to the following wrappers, because it will call C only once. =cut sub peerhost_service { my $self = shift; my ( $numeric ) = @_; $self->_get_host_service( $self->peername, $numeric ? NI_NUMERICHOST|NI_NUMERICSERV : 0 ); } =head2 peerhost $addr = $sock->peerhost Return the numeric form of the peer address as a textual representation =head2 peerport $port = $sock->peerport Return the numeric form of the peer port number =head2 peerhostname $host = $sock->peerhostname Return the resolved name of the peer address =head2 peerservice $service = $sock->peerservice Return the resolved name of the peer port number =cut sub peerhost { my $self = shift; scalar +( $self->_get_host_service( $self->peername, NI_NUMERICHOST, NIx_NOSERV ) )[0] } sub peerport { my $self = shift; scalar +( $self->_get_host_service( $self->peername, NI_NUMERICSERV, NIx_NOHOST ) )[1] } sub peerhostname { my $self = shift; scalar +( $self->_get_host_service( $self->peername, 0, NIx_NOSERV ) )[0] } sub peerservice { my $self = shift; scalar +( $self->_get_host_service( $self->peername, 0, NIx_NOHOST ) )[1] } =head2 peeraddr $addr = $peer->peeraddr Return the peer address as a binary octet string =cut sub peeraddr { my $self = shift; _unpack_sockaddr $self->peername } # This unbelievably dodgy hack works around the bug that IO::Socket doesn't do # it # https://rt.cpan.org/Ticket/Display.html?id=61577 sub accept { my $self = shift; my ( $new, $peer ) = $self->SUPER::accept( @_ ) or return; ${*$new}{$_} = ${*$self}{$_} for qw( io_socket_domain io_socket_type io_socket_proto ); return wantarray ? ( $new, $peer ) : $new; } # This second unbelievably dodgy hack guarantees that $self->fileno doesn't # change, which is useful during nonblocking connect sub socket :method { my $self = shift; return $self->SUPER::socket(@_) if not defined $self->fileno; # I hate core prototypes sometimes... socket( my $tmph, $_[0], $_[1], $_[2] ) or return undef; dup2( $tmph->fileno, $self->fileno ) or die "Unable to dup2 $tmph onto $self - $!"; } # Versions of IO::Socket before 1.35 may leave socktype undef if from, say, an # ->fdopen call. In this case we'll apply a fix BEGIN { if( eval($IO::Socket::VERSION) < 1.35 ) { *socktype = sub { my $self = shift; my $type = $self->SUPER::socktype; if( !defined $type ) { $type = $self->sockopt( Socket::SO_TYPE() ); } return $type; }; } } =head2 as_inet $inet = $sock->as_inet Returns a new L instance wrapping the same filehandle. This may be useful in cases where it is required, for backward-compatibility, to have a real object of C type instead of C. The new object will wrap the same underlying socket filehandle as the original, so care should be taken not to continue to use both objects concurrently. Ideally the original C<$sock> should be discarded after this method is called. This method checks that the socket domain is C and will throw an exception if it isn't. =cut sub as_inet { my $self = shift; croak "Cannot downgrade a non-PF_INET socket to IO::Socket::INET" unless $self->sockdomain == AF_INET; return IO::Socket::INET->new_from_fd( $self->fileno, "r+" ); } =head1 NON-BLOCKING If the constructor is passed a defined but false value for the C argument then the socket is put into non-blocking mode. When in non-blocking mode, the socket will not be set up by the time the constructor returns, because the underlying C syscall would otherwise have to block. The non-blocking behaviour is an extension of the C API, unique to C, because the former does not support multi-homed non-blocking connect. When using non-blocking mode, the caller must repeatedly check for writeability on the filehandle (for instance using C