IO::Socket::INET(3) User Contributed Perl Documentation IO::Socket::INET(3)
NAME
IO::Socket::INET - Object interface for AF_INET domain sockets 对象接口用于AF_INET 域接口
AF_INET（又称 PF_INET）是 IPv4 网络协议的套接字类型，AF_INET6 则是 IPv6 的；而 AF_UNIX 则是 Unix 系统本地通信。
SYNOPSIS
use IO::Socket::INET;
DESCRIPTION
"IO::Socket::INET" provides an object interface to creating and using sockets in the
AF_INET domain. It is built upon the IO::Socket interface and inherits all the methods
defined by IO::Socket.
"IO::Socket::INET" 提供一个对象接口来创建和使用 sockets domain，它是基于IO::Socket interface,
继承了 IO::Socket所有的方法。
CONSTRUCTOR 构造函数
new ( [ARGS] ) new 加参数
Creates an "IO::Socket::INET" object, which is a reference to a newly created
symbol (see the "Symbol" package). "new" optionally takes arguments, these
arguments are in key-value pairs.
创建一个"IO::Socket::INET" 对象, 这是引用到一个新的创建的符号包。
new 选项可带的参数,是一些键值对。
In addition to the key-value pairs accepted by IO::Socket, "IO::Socket::INET"
provides.
除了有 IO::Socket 提供的键值对,"IO::Socket::INET" 还提供
PeerAddr Remote host address <hostname>[:<port>]
PeerHost Synonym for PeerAddr
PeerPort Remote port or service <service>[(<no>)] | <no>
LocalAddr Local host bind address hostname[:port]
LocalHost Synonym for LocalAddr
LocalPort Local host bind port <service>[(<no>)] | <no>
Proto Protocol name (or number) "tcp" | "udp" | ...
Type Socket type SOCK_STREAM | SOCK_DGRAM | ...
Listen Queue size for listen
ReuseAddr Set SO_REUSEADDR before binding
Reuse Set SO_REUSEADDR before binding (deprecated, prefer ReuseAddr)
ReusePort Set SO_REUSEPORT before binding
Broadcast Set SO_BROADCAST before binding
Timeout Timeout value for various operations
MultiHomed Try all addresses for multi-homed hosts
Blocking Determine if connection will be blocking mode
If "Listen" is defined then a listen socket is created, else if the socket type,
which is derived from the protocol, is SOCK_STREAM then connect() is called.
如果 "Listen" 被定义,那么 一个侦听端口被创建,如果socket的类型,来自协议, 是SOCK_STREAM
调用connect() 方法
Although it is not illegal, the use of "MultiHomed" on a socket which is in non-
blocking mode is of little use. This is because the first connect will never fail
with a timeout as the connect call will not block.
尽管它不是违法的,MultiHomed的使用在一个socket ，在飞堵塞模式是小用途。
这是因为第一次连接永远不会失败
The "PeerAddr" can be a hostname or the IP-address on the "xx.xx.xx.xx" form. The
"PeerPort" can be a number or a symbolic service name. The service name might be
followed by a number in parenthesis which is used if the service is not known by
the system. The "PeerPort" specification can also be embedded in the "PeerAddr" by
preceding it with a ":".
"PeerAddr" 可以是一个主机名或者IP地址, "PeerPort" 可以是一个数字或者服务名的符号(http比如）
If "Proto" is not given and you specify a symbolic "PeerPort" port, then the
constructor will try to derive "Proto" from the service name. As a last resort
"Proto" "tcp" is assumed. The "Type" parameter will be deduced from "Proto" if not
specified.
如果"Proto" 没有被指定,你指定一个符号 "PeerPort" port,那么构造函数将尝试派生 “Proto"
从service name. 作为左后的对策 tcp会被假设。
If the constructor is only passed a single argument, it is assumed to be a
"PeerAddr" specification.
如果构造函数只掺入一个参数,它被假定为一个
“peeraddr”规范。
If "Blocking" is set to 0, the connection will be in nonblocking mode. If not
specified it defaults to 1 (blocking mode).
如果Blocking 被设置为0, 连接会处于非堵塞模式, 如果没有指定 默认是1(堵塞模式）
Examples:
$sock = IO::Socket::INET->new(PeerAddr => 'www.perl.org',
PeerPort => 'http(80)',
Proto => 'tcp');
$sock = IO::Socket::INET->new(PeerAddr => 'localhost:smtp(25)');
$sock = IO::Socket::INET->new(Listen => 5,
LocalAddr => 'localhost',
LocalPort => 9000,
Proto => 'tcp');
$sock = IO::Socket::INET->new('127.0.0.1:25');
$sock = IO::Socket::INET->new(PeerPort => 9999,
PeerAddr => inet_ntoa(INADDR_BROADCAST),
Proto => udp,
LocalAddr => 'localhost',
Broadcast => 1 )
or die "Can't bind : $@
";
NOTE NOTE NOTE NOTE NOTE NOTE NOTE NOTE NOTE NOTE NOTE NOTE
As of VERSION 1.18 all IO::Socket objects have autoflush turned on by default. This
was not the case with earlier releases.
NOTE NOTE NOTE NOTE NOTE NOTE NOTE NOTE NOTE NOTE NOTE NOTE
METHODS 方法
sockaddr ()
Return the address part of the sockaddr structure for the socket
返回 sockadd 结果的复制部分
sockport ()
Return the port number that the socket is using on the local host
返回套接字在本地主机上使用的端口号
sockhost ()
Return the address part of the sockaddr structure for the socket in a text form
xx.xx.xx.xx
peeraddr ()
Return the address part of the sockaddr structure for the socket on the peer host
返回对端主机上的scokaddr 结构的地址部分
peerport ()
Return the port number for the socket on the peer host.
peerhost ()
Return the address part of the sockaddr structure for the socket on the peer host
in a text form xx.xx.xx.xx
SEE ALSO
Socket, IO::Socket
AUTHOR
Graham Barr. Currently maintained by the Perl Porters. Please report all bugs to
<perl5-porters@perl.org>.
COPYRIGHT
Copyright (c) 1996-8 Graham Barr <gbarr@pobox.com>. All rights reserved. This program
is free software; you can redistribute it and/or modify it under the same terms as Perl
itself.
perl v5.10.1 2014-11-12 IO::Socket::INET(3)