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"http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">
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<html>
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<meta http-equiv="Content-Type" content="text/html; charset=UTF-8"/>
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<head>
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<title>luaposix 33.3.0 Reference</title>
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<link rel="stylesheet" href="../ldoc.css" type="text/css" />
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</head>
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<body>
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<big></big>
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luaposix 33.3.0
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Index
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Contents
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Functions
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Tables
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Constants
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Modules
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posix
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posix.ctype
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posix.curses
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posix.dirent
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posix.errno
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posix.fcntl
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posix.fnmatch
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posix.getopt
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posix.glob
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posix.grp
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posix.libgen
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posix.poll
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posix.pwd
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posix.sched
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posix.signal
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posix.stdio
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posix.stdlib
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posix.sys.msg
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posix.sys.resource
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posix.sys.socket
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posix.sys.stat
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posix.sys.statvfs
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posix.sys.time
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posix.sys.times
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posix.sys.utsname
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posix.sys.wait
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posix.syslog
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posix.termio
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posix.time
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posix.unistd
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posix.utime
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Classes
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posix.curses.chstr
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posix.curses.window
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Examples
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curses.lua
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dir.lua
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fork.lua
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fork2.lua
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getopt.lua
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glob.lua
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limit.lua
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lock.lua
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netlink-uevent.lua
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ping.lua
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poll.lua
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rt_sched.lua
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signal.lua
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socket.lua
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termios.lua
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tree.lua
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Module posix.sys.socket
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BSD Sockets.
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Where supported by the underlying system, functions and constants to create,
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connect and communicate over BSD sockets. If the module loads successfully,
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but there is no kernel support, then posix.sys.socket.version will be set,
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but the unsupported APIs will be nil.
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accept (fd)
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Accept a connection on a socket.
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bind (fd, addr)
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Bind an address to a socket.
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connect (fd, addr)
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Initiate a connection on a socket.
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getaddrinfo (host, service[, hints])
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Network address and service translation.
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getsockname (sockfd)
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Get socket name.
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listen (fd, backlog)
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Listen for connections on a socket.
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recv (fd, count)
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Receive a message from a socket.
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recvfrom (fd, count)
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Receive a message from a socket.
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send (fd, buffer)
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Send a message from a socket.
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sendto (fd, buffer, destination)
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Send a message from a socket.
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setsockopt (fd, level, name, value1[, value2])
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Get and set options on sockets.
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shutdown (fd, how)
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Shut down part of a full-duplex connection.
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socket (domain, type, options)
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Create an endpoint for communication.
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socketpair (domain, socktype, options)
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Create a pair of connected sockets.
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PosixAddrInfo
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Address information hints.
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sockaddr
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Socket address.
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posix.sys.socket
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Socket constants.
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Functions
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accept (fd)
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Accept a connection on a socket.
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Parameters:
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fd
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int
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socket descriptor to act on
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Returns:
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int
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connection descriptor
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table
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connection address, if successful
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Or
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nil
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string
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error message
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|
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int
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errnum
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437b5e |
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See also:
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accept(2)
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bind (fd, addr)
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|
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Bind an address to a socket.
|
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Parameters:
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|
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fd
|
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int
|
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socket descriptor to act on
|
|
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|
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addr
|
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sockaddr
|
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socket address
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Returns:
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437b5e |
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|
|
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int
|
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0, if successful
|
|
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Or
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nil
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string
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error message
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int
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errnum
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437b5e |
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See also:
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bind(2)
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connect (fd, addr)
|
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437b5e |
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437b5e |
|
|
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437b5e |
Initiate a connection on a socket.
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437b5e |
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437b5e |
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437b5e |
Parameters:
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fd
|
|
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437b5e |
int
|
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socket descriptor to act on
|
|
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|
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addr
|
|
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sockaddr
|
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socket address
|
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Returns:
|
|
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437b5e |
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|
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|
|
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437b5e |
int
|
|
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0, if successful
|
|
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Or
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nil
|
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string
|
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437b5e |
error message
|
|
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437b5e |
|
|
Packit |
437b5e |
int
|
|
Packit |
437b5e |
errnum
|
|
Packit |
437b5e |
|
|
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437b5e |
|
|
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437b5e |
|
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437b5e |
See also:
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|
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437b5e |
|
|
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437b5e |
connect(2)
|
|
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437b5e |
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437b5e |
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437b5e |
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437b5e |
|
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437b5e |
|
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437b5e |
|
|
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437b5e |
getaddrinfo (host, service[, hints])
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
Network address and service translation.
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
Parameters:
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
host
|
|
Packit |
437b5e |
string
|
|
Packit |
437b5e |
name of a host
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
service
|
|
Packit |
437b5e |
string
|
|
Packit |
437b5e |
name of service
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
hints
|
|
Packit |
437b5e |
PosixAddrInfo
|
|
Packit |
437b5e |
table
|
|
Packit |
437b5e |
(optional)
|
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437b5e |
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437b5e |
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437b5e |
Returns:
|
|
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437b5e |
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
list
|
|
Packit |
437b5e |
of sockaddr tables
|
|
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437b5e |
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Packit |
437b5e |
Or
|
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437b5e |
|
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437b5e |
|
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437b5e |
nil
|
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437b5e |
|
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437b5e |
string
|
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437b5e |
error message
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
int
|
|
Packit |
437b5e |
errnum
|
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Packit |
437b5e |
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|
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437b5e |
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437b5e |
|
|
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437b5e |
See also:
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437b5e |
|
|
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437b5e |
getaddrinfo(2)
|
|
Packit |
437b5e |
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Packit |
437b5e |
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Packit |
437b5e |
Usage:
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437b5e |
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437b5e |
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Packit |
437b5e |
local res, errmsg, errcode = posix.getaddrinfo ("www.lua.org", "http",
|
|
Packit |
437b5e |
{ family = P.IF_INET, socktype = P.SOCK_STREAM }
|
|
Packit |
437b5e |
)
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
getsockname (sockfd)
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
Get socket name.
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
Parameters:
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
sockfd
|
|
Packit |
437b5e |
int
|
|
Packit |
437b5e |
socket descriptor
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
Returns:
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
sockaddr
|
|
Packit |
437b5e |
the current address to which the socket sockfd is bound
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
Or
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
nil
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
string
|
|
Packit |
437b5e |
error message
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
int
|
|
Packit |
437b5e |
errnum
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
See also:
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
getsockname(2)
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
Usage:
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
sa, err = posix.getsockname (sockfd)
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
listen (fd, backlog)
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
Listen for connections on a socket.
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
Parameters:
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
fd
|
|
Packit |
437b5e |
int
|
|
Packit |
437b5e |
socket descriptor to act on
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
backlog
|
|
Packit |
437b5e |
int
|
|
Packit |
437b5e |
maximum length for queue of pending connections
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
Returns:
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
int
|
|
Packit |
437b5e |
0, if successful
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
Or
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
nil
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
string
|
|
Packit |
437b5e |
error message
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
int
|
|
Packit |
437b5e |
errnum
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
See also:
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
listen(2)
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
recv (fd, count)
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
Receive a message from a socket.
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
Parameters:
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
fd
|
|
Packit |
437b5e |
int
|
|
Packit |
437b5e |
socket descriptor to act on
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
count
|
|
Packit |
437b5e |
int
|
|
Packit |
437b5e |
maximum number of bytes to receive
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
Returns:
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
int
|
|
Packit |
437b5e |
received bytes, if successful
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
Or
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
nil
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
string
|
|
Packit |
437b5e |
error message
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
int
|
|
Packit |
437b5e |
errnum
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
See also:
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
recv(2)
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
recvfrom (fd, count)
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
Receive a message from a socket.
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
Parameters:
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
fd
|
|
Packit |
437b5e |
int
|
|
Packit |
437b5e |
socket descriptor to act on
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
count
|
|
Packit |
437b5e |
int
|
|
Packit |
437b5e |
maximum number of bytes to receive
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
Returns:
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
int
|
|
Packit |
437b5e |
received bytes
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
sockaddr
|
|
Packit |
437b5e |
address of message source, if successful
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
Or
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
nil
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
string
|
|
Packit |
437b5e |
error message
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
int
|
|
Packit |
437b5e |
errnum
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
See also:
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
recvfrom(2)
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
send (fd, buffer)
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
Send a message from a socket.
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
Parameters:
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
fd
|
|
Packit |
437b5e |
int
|
|
Packit |
437b5e |
socket descriptor to act on
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
buffer
|
|
Packit |
437b5e |
string
|
|
Packit |
437b5e |
message bytes to send
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
Returns:
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
int
|
|
Packit |
437b5e |
number of bytes sent, if successful
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
Or
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
nil
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
string
|
|
Packit |
437b5e |
error message
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
int
|
|
Packit |
437b5e |
errnum
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
See also:
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
send(2)
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
sendto (fd, buffer, destination)
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
Send a message from a socket.
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
Parameters:
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
fd
|
|
Packit |
437b5e |
int
|
|
Packit |
437b5e |
socket descriptor to act on
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
buffer
|
|
Packit |
437b5e |
string
|
|
Packit |
437b5e |
message bytes to send
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
destination
|
|
Packit |
437b5e |
sockaddr
|
|
Packit |
437b5e |
socket address
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
Returns:
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
int
|
|
Packit |
437b5e |
number of bytes sent, if successful
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
Or
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
nil
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
string
|
|
Packit |
437b5e |
error message
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
int
|
|
Packit |
437b5e |
errnum
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
See also:
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
sendto(2)
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
setsockopt (fd, level, name, value1[, value2])
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
Get and set options on sockets.
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
Parameters:
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
fd
|
|
Packit |
437b5e |
int
|
|
Packit |
437b5e |
socket descriptor
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
level
|
|
Packit |
437b5e |
int
|
|
Packit |
437b5e |
one of SOL_SOCKET, IPPROTO_IPV6, IPPROTO_TCP
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
name
|
|
Packit |
437b5e |
int
|
|
Packit |
437b5e |
option name, varies according to level value
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
value1
|
|
Packit |
437b5e |
option value to set
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
value2
|
|
Packit |
437b5e |
some option names need an additional value
|
|
Packit |
437b5e |
(optional)
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
Returns:
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
int
|
|
Packit |
437b5e |
0, if successful
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
Or
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
nil
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
string
|
|
Packit |
437b5e |
error message
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
int
|
|
Packit |
437b5e |
errnum
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
See also:
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
setsockopt(2)
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
Usage:
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
ok, errmsg = P.setsockopt (sock, P.SOL_SOCKET, P.SO_SNDTIMEO, 1, 0)
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
shutdown (fd, how)
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
Shut down part of a full-duplex connection.
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
Parameters:
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
fd
|
|
Packit |
437b5e |
int
|
|
Packit |
437b5e |
socket descriptor to act on
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
how
|
|
Packit |
437b5e |
int
|
|
Packit |
437b5e |
one of SHUT_RD, SHUT_WR or SHUT_RDWR
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
Returns:
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
int
|
|
Packit |
437b5e |
0, if successful
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
Or
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
nil
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
string
|
|
Packit |
437b5e |
error message
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
int
|
|
Packit |
437b5e |
errnum
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
See also:
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
shutdown(2)
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
Usage:
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
ok, errmsg = P.shutdown (sock, P.SHUT_RDWR)
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
socket (domain, type, options)
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
Create an endpoint for communication.
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
Parameters:
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
domain
|
|
Packit |
437b5e |
int
|
|
Packit |
437b5e |
one of AF_INET, AF_INET6, AF_UNIX or AF_NETLINK
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
type
|
|
Packit |
437b5e |
int
|
|
Packit |
437b5e |
one of SOCK_STREAM, SOCK_DGRAM or SOCK_RAW
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
options
|
|
Packit |
437b5e |
int
|
|
Packit |
437b5e |
usually 0, but some socket types might implement other protocols.
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
Returns:
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
int
|
|
Packit |
437b5e |
socket descriptor, if successful
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
Or
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
nil
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
string
|
|
Packit |
437b5e |
error message
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
int
|
|
Packit |
437b5e |
errnum
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
See also:
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
socket(2)
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
Usage:
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
sockd = P.socket (P.AF_INET, P.SOCK_STREAM, 0)
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
socketpair (domain, socktype, options)
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
Create a pair of connected sockets.
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
Parameters:
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
domain
|
|
Packit |
437b5e |
int
|
|
Packit |
437b5e |
one of AF_INET, AF_INET6, AF_UNIX or AF_NETLINK
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
socktype
|
|
Packit |
437b5e |
int
|
|
Packit |
437b5e |
one of SOCK_STREAM, SOCK_DGRAM or SOCK_RAW
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
options
|
|
Packit |
437b5e |
int
|
|
Packit |
437b5e |
usually 0, but some socket types might implement other protocols.
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
Returns:
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
int
|
|
Packit |
437b5e |
descriptor of one end of the socket pair
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
int
|
|
Packit |
437b5e |
descriptor of the other end of the pair, if successful
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
Or
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
nil
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
string
|
|
Packit |
437b5e |
error message
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
int
|
|
Packit |
437b5e |
errnum
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
Usage:
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
sockr, sockw = P.socketpair (P.AF_INET, P.SOCK_STREAM, 0)
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
Tables
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
PosixAddrInfo
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
Address information hints.
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
Fields:
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
family
|
|
Packit |
437b5e |
int
|
|
Packit |
437b5e |
one of AF_INET, AF_INET6, AF_UNIX or AF_NETLINK
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
flags
|
|
Packit |
437b5e |
int
|
|
Packit |
437b5e |
bitwise OR of zero or more of AI_ADDRCONFIG, AI_ALL,
|
|
Packit |
437b5e |
AI_CANONNAME, AI_NUMERICHOST, AI_NUMERICSERV, AI_PASSIVE and
|
|
Packit |
437b5e |
AI_V4MAPPED
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
socktype
|
|
Packit |
437b5e |
int
|
|
Packit |
437b5e |
one of SOCK_STREAM, SOCK_DGRAM or SOCK_RAW
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
protocol
|
|
Packit |
437b5e |
int
|
|
Packit |
437b5e |
one of IPPROTO_TCP or IPPROTO_UDP
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
sockaddr
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
Socket address.
|
|
Packit |
437b5e |
All sockaddr tables have the family field, and depending on its value, also
|
|
Packit |
437b5e |
a subset of the following fields too.
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
Fields:
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
family
|
|
Packit |
437b5e |
int
|
|
Packit |
437b5e |
one of AF_INET, AF_INET6, AF_UNIX or (where supported) AF_NETLINK
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
port
|
|
Packit |
437b5e |
int
|
|
Packit |
437b5e |
socket port number for AF_INET (and equivalently AF_INET6) family
|
|
Packit |
437b5e |
(optional)
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
addr
|
|
Packit |
437b5e |
string
|
|
Packit |
437b5e |
socket host address in correct format, for AF_INET family
|
|
Packit |
437b5e |
(optional)
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
socktype
|
|
Packit |
437b5e |
int
|
|
Packit |
437b5e |
one of SOCK_STREAM, SOCK_DGRAM or SOCK_RAW for AF_INET family
|
|
Packit |
437b5e |
(optional)
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
canonname
|
|
Packit |
437b5e |
string
|
|
Packit |
437b5e |
canonical name for service location, for AF_INET family
|
|
Packit |
437b5e |
(optional)
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
protocol
|
|
Packit |
437b5e |
int
|
|
Packit |
437b5e |
one of IPPROTO_TCP or IPPROTO_UDP, for AF_INET family
|
|
Packit |
437b5e |
(optional)
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
path
|
|
Packit |
437b5e |
string
|
|
Packit |
437b5e |
location in file system, for AF_UNIX family
|
|
Packit |
437b5e |
(optional)
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
pid
|
|
Packit |
437b5e |
int
|
|
Packit |
437b5e |
process identifier, for AF_NETLINK family
|
|
Packit |
437b5e |
(optional)
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
groups
|
|
Packit |
437b5e |
int
|
|
Packit |
437b5e |
process group owner identifier, for AF_NETLINK family
|
|
Packit |
437b5e |
(optional)
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
Constants
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
posix.sys.socket
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
Socket constants.
|
|
Packit |
437b5e |
Any constants not available in the underlying system will be nil valued.
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
Fields:
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
AF_INET
|
|
Packit |
437b5e |
int
|
|
Packit |
437b5e |
IP protocol family
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
AF_INET6
|
|
Packit |
437b5e |
int
|
|
Packit |
437b5e |
IP version 6
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
AF_NETLINK
|
|
Packit |
437b5e |
int
|
|
Packit |
437b5e |
Netlink protocol family
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
AF_UNIX
|
|
Packit |
437b5e |
int
|
|
Packit |
437b5e |
local to host
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
AF_UNSPEC
|
|
Packit |
437b5e |
int
|
|
Packit |
437b5e |
unspecified
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
AI_ADDRCONFIG
|
|
Packit |
437b5e |
int
|
|
Packit |
437b5e |
use host configuration for returned address type
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
AI_ALL
|
|
Packit |
437b5e |
int
|
|
Packit |
437b5e |
return IPv4 mapped and IPv6 addresses
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
AI_CANONNAME
|
|
Packit |
437b5e |
int
|
|
Packit |
437b5e |
request canonical name
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
AI_NUMERICHOST
|
|
Packit |
437b5e |
int
|
|
Packit |
437b5e |
don't use domain name resolution
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
AI_NUMERICSERV
|
|
Packit |
437b5e |
int
|
|
Packit |
437b5e |
don't use service name resolution
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
AI_PASSIVE
|
|
Packit |
437b5e |
int
|
|
Packit |
437b5e |
address is intended for bind
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
AI_V4MAPPED
|
|
Packit |
437b5e |
int
|
|
Packit |
437b5e |
IPv4 mapped addresses are acceptable
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
IPPROTO_ICMP
|
|
Packit |
437b5e |
int
|
|
Packit |
437b5e |
internet control message protocol
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
IPPROTO_IP
|
|
Packit |
437b5e |
int
|
|
Packit |
437b5e |
internet protocol
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
IPPROTO_IPV6
|
|
Packit |
437b5e |
int
|
|
Packit |
437b5e |
IPv6 header
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
IPPROTO_TCP
|
|
Packit |
437b5e |
int
|
|
Packit |
437b5e |
transmission control protocol
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
IPPROTO_UDP
|
|
Packit |
437b5e |
int
|
|
Packit |
437b5e |
user datagram protocol
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
IPV6_JOIN_GROUP
|
|
Packit |
437b5e |
int
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
IPV6_LEAVE_GROUP
|
|
Packit |
437b5e |
int
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
IPV6_MULTICAST_HOPS
|
|
Packit |
437b5e |
int
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
IPV6_MULTICAST_IF
|
|
Packit |
437b5e |
int
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
IPV6_MULTICAST_LOOP
|
|
Packit |
437b5e |
int
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
IPV6_UNICAST_HOPS
|
|
Packit |
437b5e |
int
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
IPV6_V6ONLY
|
|
Packit |
437b5e |
int
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
NETLINK_AUDIT
|
|
Packit |
437b5e |
int
|
|
Packit |
437b5e |
auditing
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
NETLINK_CONNECTOR
|
|
Packit |
437b5e |
int
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
NETLINK_DNRTMSG
|
|
Packit |
437b5e |
int
|
|
Packit |
437b5e |
decnet routing messages
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
NETLINK_ECRYPTFS
|
|
Packit |
437b5e |
int
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
NETLINK_FIB_LOOKUP
|
|
Packit |
437b5e |
int
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
NETLINK_FIREWALL
|
|
Packit |
437b5e |
int
|
|
Packit |
437b5e |
firewalling hook
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
NETLINK_GENERIC
|
|
Packit |
437b5e |
int
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
NETLINK_IP6_FW
|
|
Packit |
437b5e |
int
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
NETLINK_ISCSI
|
|
Packit |
437b5e |
int
|
|
Packit |
437b5e |
open iSCSI
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
NETLINK_KOBJECT_UEVENT
|
|
Packit |
437b5e |
int
|
|
Packit |
437b5e |
kernel messages to userspace
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
NETLINK_NETFILTER
|
|
Packit |
437b5e |
int
|
|
Packit |
437b5e |
netfilter subsystem
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
NETLINK_NFLOG
|
|
Packit |
437b5e |
int
|
|
Packit |
437b5e |
netfilter/iptables ULOG
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
NETLINK_ROUTE
|
|
Packit |
437b5e |
int
|
|
Packit |
437b5e |
routing/device hook
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
NETLINK_SCSITRANSPORT
|
|
Packit |
437b5e |
int
|
|
Packit |
437b5e |
SCSI transports
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
NETLINK_SELINUX
|
|
Packit |
437b5e |
int
|
|
Packit |
437b5e |
SELinux event notifications
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
NETLINK_UNUSED
|
|
Packit |
437b5e |
int
|
|
Packit |
437b5e |
unused number
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
NETLINK_USERSOCK
|
|
Packit |
437b5e |
int
|
|
Packit |
437b5e |
reserved for user mode socket protocols
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
NETLINK_XFRM
|
|
Packit |
437b5e |
int
|
|
Packit |
437b5e |
ipsec
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
SHUT_RD
|
|
Packit |
437b5e |
int
|
|
Packit |
437b5e |
no more receptions
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
SHUT_RDWR
|
|
Packit |
437b5e |
int
|
|
Packit |
437b5e |
no more receptions or transmissions
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
SHUT_WR
|
|
Packit |
437b5e |
int
|
|
Packit |
437b5e |
no more transmissions
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
SOCK_DGRAM
|
|
Packit |
437b5e |
int
|
|
Packit |
437b5e |
connectionless unreliable datagrams
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
SOCK_RAW
|
|
Packit |
437b5e |
int
|
|
Packit |
437b5e |
raw protocol interface
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
SOCK_STREAM
|
|
Packit |
437b5e |
int
|
|
Packit |
437b5e |
connection based byte stream
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
SOL_SOCKET
|
|
Packit |
437b5e |
int
|
|
Packit |
437b5e |
socket level
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
SOMAXCONN
|
|
Packit |
437b5e |
int
|
|
Packit |
437b5e |
maximum concurrent connections
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
SO_ACCEPTCONN
|
|
Packit |
437b5e |
int
|
|
Packit |
437b5e |
does this socket accept connections
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
SO_BINDTODEVICE
|
|
Packit |
437b5e |
int
|
|
Packit |
437b5e |
bind to a particular device
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
SO_BROADCAST
|
|
Packit |
437b5e |
int
|
|
Packit |
437b5e |
permit broadcasts
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
SO_DEBUG
|
|
Packit |
437b5e |
int
|
|
Packit |
437b5e |
turn-on socket debugging
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
SO_DONTROUTE
|
|
Packit |
437b5e |
int
|
|
Packit |
437b5e |
bypass standard routing
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
SO_ERROR
|
|
Packit |
437b5e |
int
|
|
Packit |
437b5e |
set socket error flag
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
SO_KEEPALIVE
|
|
Packit |
437b5e |
int
|
|
Packit |
437b5e |
periodically transmit keep-alive message
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
SO_LINGER
|
|
Packit |
437b5e |
int
|
|
Packit |
437b5e |
linger on a posix.unistd.close if data is still present
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
SO_OOBINLINE
|
|
Packit |
437b5e |
int
|
|
Packit |
437b5e |
leave out-of-band data inline
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
SO_RCVBUF
|
|
Packit |
437b5e |
int
|
|
Packit |
437b5e |
set receive buffer size
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
SO_RCVLOWAT
|
|
Packit |
437b5e |
int
|
|
Packit |
437b5e |
set receive buffer low water mark
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
SO_RCVTIMEO
|
|
Packit |
437b5e |
int
|
|
Packit |
437b5e |
set receive timeout
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
SO_REUSEADDR
|
|
Packit |
437b5e |
int
|
|
Packit |
437b5e |
reuse local addresses
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
SO_SNDBUF
|
|
Packit |
437b5e |
int
|
|
Packit |
437b5e |
set send buffer size
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
SO_SNDLOWAT
|
|
Packit |
437b5e |
int
|
|
Packit |
437b5e |
set send buffer low water mark
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
SO_SNDTIMEO
|
|
Packit |
437b5e |
int
|
|
Packit |
437b5e |
set send timeout
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
SO_TYPE
|
|
Packit |
437b5e |
int
|
|
Packit |
437b5e |
get the socket type
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
TCP_NODELAY
|
|
Packit |
437b5e |
int
|
|
Packit |
437b5e |
don't delay send for packet coalescing
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
Usage:
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
for name, value in pairs (require "posix.sys.socket") do
|
|
Packit |
437b5e |
if type (value) == "number" then
|
|
Packit |
437b5e |
print (name, value)
|
|
Packit |
437b5e |
end
|
|
Packit |
437b5e |
end
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
generated by LDoc 1.4.3
|
|
Packit |
437b5e |
Last updated 2015-03-01 09:06:02
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
</body>
|
|
Packit |
437b5e |
</html>
|