170 lines
6.4 KiB
Lua
170 lines
6.4 KiB
Lua
--- Socket Object.
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-- Supports IPv4, IPv6 and UNIX (POSIX only) families.
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-- @cstyle instance
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module "nixio.Socket"
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--- Get the local address of a socket.
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-- @class function
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-- @name Socket.getsockname
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-- @return IP-Address
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-- @return Port
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--- Get the peer address of a socket.
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-- @class function
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-- @name Socket.getpeername
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-- @return IP-Address
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-- @return Port
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--- Bind the socket to a network address.
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-- @class function
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-- @name Socket.bind
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-- @usage This function calls getaddrinfo() and bind() but NOT listen().
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-- @usage If <em>host</em> is a domain name it will be looked up and bind()
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-- tries the IP-Addresses in the order returned by the DNS resolver
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-- until the bind succeeds.
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-- @usage UNIX sockets ignore the <em>port</em>,
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-- and interpret <em>host</em> as a socket path.
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-- @param host Host (optional, default: all addresses)
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-- @param port Port or service description
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-- @return true
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--- Connect the socket to a network address.
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-- @class function
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-- @name Socket.connect
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-- @usage This function calls getaddrinfo() and connect().
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-- @usage If <em>host</em> is a domain name it will be looked up and connect()
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-- tries the IP-Addresses in the order returned by the DNS resolver
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-- until the connect succeeds.
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-- @usage UNIX sockets ignore the <em>port</em>,
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-- and interpret <em>host</em> as a socket path.
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-- @param host Hostname or IP-Address (optional, default: localhost)
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-- @param port Port or service description
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-- @return true
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--- Listen for connections on the socket.
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-- @class function
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-- @name Socket.listen
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-- @param backlog Length of queue for pending connections
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-- @return true
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--- Accept a connection on the socket.
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-- @class function
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-- @name Socket.accept
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-- @return Socket Object
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-- @return Peer IP-Address
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-- @return Peer Port
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--- Send a message on the socket specifying the destination.
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-- @class function
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-- @name Socket.sendto
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-- @usage <strong>Warning:</strong> It is not guaranteed that all data
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-- in the buffer is written at once.
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-- You have to check the return value - the number of bytes actually written -
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-- or use the safe IO functions in the high-level IO utility module.
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-- @usage Unlike standard Lua indexing the lowest offset and default is 0.
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-- @param buffer Buffer holding the data to be written.
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-- @param host Target IP-Address
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-- @param port Target Port
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-- @param offset Offset to start reading the buffer from. (optional)
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-- @param length Length of chunk to read from the buffer. (optional)
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-- @return number of bytes written
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--- Send a message on the socket.
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-- This function is identical to sendto except for the missing destination
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-- paramters. See the sendto description for a detailed description.
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-- @class function
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-- @name Socket.send
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-- @param buffer Buffer holding the data to be written.
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-- @param offset Offset to start reading the buffer from. (optional)
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-- @param length Length of chunk to read from the buffer. (optional)
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-- @see Socket.sendto
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-- @return number of bytes written
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--- Send a message on the socket (This is an alias for send).
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-- See the sendto description for a detailed description.
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-- @class function
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-- @name Socket.write
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-- @param buffer Buffer holding the data to be written.
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-- @param offset Offset to start reading the buffer from. (optional)
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-- @param length Length of chunk to read from the buffer. (optional)
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-- @see Socket.sendto
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-- @return number of bytes written
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--- Receive a message on the socket including the senders source address.
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-- @class function
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-- @name Socket.recvfrom
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-- @usage <strong>Warning:</strong> It is not guaranteed that all requested data
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-- is read at once.
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-- You have to check the return value - the length of the buffer actually read -
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-- or use the safe IO functions in the high-level IO utility module.
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-- @usage The length of the return buffer is limited by the (compile time)
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-- nixio buffersize which is <em>nixio.const.buffersize</em> (8192 by default).
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-- Any read request greater than that will be safely truncated to this value.
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-- @param length Amount of data to read (in Bytes).
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-- @return buffer containing data successfully read
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-- @return host IP-Address of the sender
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-- @return port Port of the sender
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--- Receive a message on the socket.
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-- This function is identical to recvfrom except that it does not return
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-- the sender's source address. See the recvfrom description for more details.
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-- @class function
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-- @name Socket.recv
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-- @param length Amount of data to read (in Bytes).
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-- @see Socket.recvfrom
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-- @return buffer containing data successfully read
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--- Receive a message on the socket (This is an alias for recv).
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-- See the recvfrom description for more details.
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-- @class function
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-- @name Socket.read
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-- @param length Amount of data to read (in Bytes).
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-- @see Socket.recvfrom
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-- @return buffer containing data successfully read
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--- Close the socket.
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-- @class function
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-- @name Socket.close
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-- @return true
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--- Shut down part of a full-duplex connection.
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-- @class function
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-- @name Socket.shutdown
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-- @param how (optional, default: rdwr) ["rdwr", "rd", "wr"]
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-- @return true
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--- Get the number of the filedescriptor.
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-- @class function
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-- @name Socket.fileno
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-- @return file descriptor number
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--- Set the blocking mode of the socket.
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-- @class function
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-- @name Socket.setblocking
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-- @param blocking (boolean)
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-- @return true
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--- Set a socket option.
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-- @class function
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-- @name Socket.setopt
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-- @param level Level ["socket", "tcp", "ip", "ipv6"]
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-- @param option Option ["keepalive", "reuseaddr", "sndbuf", "rcvbuf",
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-- "priority", "broadcast", "linger", "sndtimeo", "rcvtimeo", "dontroute",
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-- "bindtodevice", "error", "oobinline", "cork" (TCP), "nodelay" (TCP),
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-- "mtu" (IP, IPv6), "hdrincl" (IP), "multicast_ttl" (IP), "multicast_loop"
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-- (IP, IPv6), "multicast_if" (IP, IPv6), "v6only" (IPv6), "multicast_hops"
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-- (IPv6), "add_membership" (IP, IPv6), "drop_membership" (IP, IPv6)]
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-- @param value Value
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-- @return true
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--- Get a socket option.
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-- @class function
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-- @name Socket.getopt
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-- @param level Level ["socket", "tcp", "ip", "ipv6"]
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-- @param option Option ["keepalive", "reuseaddr", "sndbuf", "rcvbuf",
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-- "priority", "broadcast", "linger", "sndtimeo", "rcvtimeo", "dontroute",
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-- "bindtodevice", "error", "oobinline", "cork" (TCP), "nodelay" (TCP),
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-- "mtu" (IP, IPv6), "hdrincl" (IP), "multicast_ttl" (IP), "multicast_loop"
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-- (IP, IPv6), "multicast_if" (IP, IPv6), "v6only" (IPv6), "multicast_hops"
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-- (IPv6), "add_membership" (IP, IPv6), "drop_membership" (IP, IPv6)]
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-- @return Value |