class UNIXServer
Overview
A local interprocess communication server socket.
Only available on UNIX and UNIX-like operating systems.
Example usage:
require "socket"
def handle_client(client)
message = client.gets
client.puts message
end
server = UNIXServer.new("/tmp/myapp.sock")
while client = server.accept?
spawn handle_client(client)
end
Included Modules
Defined in:
socket/unix_server.crConstructors
-
.new(path : String, type : Type = Type::STREAM, backlog : Int = 128)
Creates a named UNIX socket, listening on a filesystem pathname.
-
.new(*, fd : Int32, type : Type = Type::STREAM, path : String? = nil)
Creates a UNIXServer from an already configured raw file descriptor
Class Method Summary
-
.open(path, type : Type = Type::STREAM, backlog = 128, &)
Creates a new UNIX server and yields it to the block.
Instance Method Summary
-
#accept? : UNIXSocket?
Accepts an incoming connection.
-
#close(delete = true)
Closes the socket, then deletes the filesystem pathname if it exists.
Instance methods inherited from module Socket::Server
accept : IOaccept(&) accept, accept? : IO?
accept?(&) accept?
Instance methods inherited from class UNIXSocket
local_address
local_address,
path : String?
path,
receive
receive,
remote_address
remote_address
Constructor methods inherited from class UNIXSocket
new(path : String, type : Type = Type::STREAM)new(*, fd : Int32, type : Type = Type::STREAM, path : String? = nil) new
Class methods inherited from class UNIXSocket
open(path, type : Type = Type::STREAM, &)
open,
pair(type : Type = Type::STREAM)pair(type : Type = Type::STREAM, &) pair
Instance methods inherited from class Socket
accept : Socket
accept,
accept?
accept?,
bind(host : String, port : Int)bind(port : Int)
bind(addr : Socket::Address) bind, blocking blocking, blocking=(value) blocking=, broadcast=(val : Bool) broadcast=, broadcast? broadcast?, close_on_exec=(arg : Bool) close_on_exec=, close_on_exec? close_on_exec?, close_read close_read, close_write close_write, closed? : Bool closed?, connect(addr, timeout = nil, &)
connect(addr, timeout = nil) : Nil
connect(host : String, port : Int, connect_timeout = nil) connect, family : Family family, fcntl(cmd, arg = 0) fcntl, fd : Int32 fd, finalize finalize, inspect(io : IO) : Nil inspect, keepalive=(val : Bool) keepalive=, keepalive? keepalive?, linger linger, linger=(val : Int?) linger=, listen(backlog : Int = SOMAXCONN)
listen(backlog : Int = SOMAXCONN, &) listen, protocol : Protocol protocol, receive(max_message_size = 512) : Tuple(String, Address)
receive(message : Bytes) : Tuple(Int32, Address) receive, recv_buffer_size recv_buffer_size, recv_buffer_size=(val : Int32) recv_buffer_size=, reuse_address=(val : Bool) reuse_address=, reuse_address? reuse_address?, reuse_port=(val : Bool) reuse_port=, reuse_port? reuse_port?, send(message, to addr : Address) : Int32
send(message) : Int32 send, send_buffer_size send_buffer_size, send_buffer_size=(val : Int32) send_buffer_size=, setsockopt(optname, optval, level = LibC::SOL_SOCKET) setsockopt, tty? tty?, type : Type type
Constructor methods inherited from class Socket
new(fd : Int32, family, type, protocol = Protocol::IP, blocking = false)new(family, type, protocol = Protocol::IP, blocking = false) new
Class methods inherited from class Socket
fcntl(fd, cmd, arg = 0)
fcntl,
ip?(string : String)
ip?,
tcp(family : Family, blocking = false)
tcp,
udp(family : Family, blocking = false)
udp,
unix(type : Type = Type::STREAM, blocking = false)
unix
Instance methods inherited from module IO::Evented
evented_close
evented_close,
evented_read(slice : Bytes, errno_msg : String, &) : Int32
evented_read,
evented_reopen
evented_reopen,
evented_send(slice : Bytes, errno_msg : String, &) : Int32
evented_send,
evented_write(slice : Bytes, errno_msg : String, &) : Nil
evented_write,
read_timeout : Time::Span?
read_timeout,
read_timeout=(read_timeout : Number) : Numberread_timeout=(timeout : Time::Span?) : Time::Span? read_timeout=, write_timeout : Time::Span? write_timeout, write_timeout=(write_timeout : Number) : Number
write_timeout=(timeout : Time::Span?) : Time::Span? write_timeout=
Instance methods inherited from module IO::Buffered
buffer_size
buffer_size,
buffer_size=(value)
buffer_size=,
close : Nil
close,
flush
flush,
flush_on_newline=(flush_on_newline)
flush_on_newline=,
flush_on_newline?
flush_on_newline?,
peek : Bytes?
peek,
read(slice : Bytes)
read,
read_buffering=(read_buffering)
read_buffering=,
read_buffering?
read_buffering?,
rewind
rewind,
sync=(sync)
sync=,
sync?
sync?,
unbuffered_close
unbuffered_close,
unbuffered_flush
unbuffered_flush,
unbuffered_read(slice : Bytes)
unbuffered_read,
unbuffered_rewind
unbuffered_rewind,
unbuffered_write(slice : Bytes)
unbuffered_write,
write(slice : Bytes) : Nil
write
Instance methods inherited from class IO
<<(obj) : self
<<,
close
close,
closed?
closed?,
each_byte(&) : Nileach_byte each_byte, each_char(&) : Nil
each_char each_char, each_line(*args, **options, &block : String -> ) : Nil
each_line(*args, **options) each_line, encoding : String encoding, flush flush, gets(delimiter : Char, limit : Int, chomp = false) : String?
gets(delimiter : Char, chomp = false) : String?
gets(chomp = true) : String?
gets(limit : Int, chomp = false) : String?
gets(delimiter : String, chomp = false) : String? gets, gets_to_end : String gets_to_end, peek : Bytes? peek, pos pos, pos=(value) pos=, print(*objects : _) : Nil
print(obj) : Nil print, printf(format_string, *args) : Nil
printf(format_string, args : Array | Tuple) : Nil printf, puts(*objects : _) : Nil
puts : Nil
puts(obj) : Nil
puts(string : String) : Nil puts, read(slice : Bytes) read, read_at(offset, bytesize, &) read_at, read_byte : UInt8? read_byte, read_bytes(type, format : IO::ByteFormat = IO::ByteFormat::SystemEndian) read_bytes, read_char : Char? read_char, read_fully(slice : Bytes) read_fully, read_fully?(slice : Bytes) read_fully?, read_line(*args, **options) : String read_line, read_string(bytesize : Int) : String read_string, read_utf8(slice : Bytes) read_utf8, read_utf8_byte read_utf8_byte, rewind rewind, seek(offset, whence : Seek = Seek::Set) seek, set_encoding(encoding : String, invalid : Symbol? = nil) set_encoding, skip(bytes_count : Int) : Nil skip, skip_to_end : Nil skip_to_end, tell tell, tty? : Bool tty?, write(slice : Bytes) : Nil write, write_byte(byte : UInt8) write_byte, write_bytes(object, format : IO::ByteFormat = IO::ByteFormat::SystemEndian) write_bytes, write_utf8(slice : Bytes) write_utf8
Class methods inherited from class IO
copy(src, dst, limit : Int) : Int64copy(src, dst) : Int64 copy, pipe(read_blocking = false, write_blocking = false) : Tuple(IO::FileDescriptor, IO::FileDescriptor)
pipe(read_blocking = false, write_blocking = false, &) pipe, same_content?(stream1 : IO, stream2 : IO) same_content?
Instance methods inherited from class Reference
==(other : self)==(other : JSON::Any)
==(other : YAML::Any)
==(other) ==, dup dup, hash(hasher) hash, inspect(io : IO) : Nil inspect, object_id : UInt64 object_id, pretty_print(pp) : Nil pretty_print, same?(other : Reference)
same?(other : Nil) same?, to_s(io : IO) : Nil to_s
Constructor methods inherited from class Reference
new
new
Instance methods inherited from class Object
! : Bool
!,
!=(other)
!=,
!~(other)
!~,
==(other)
==,
===(other : JSON::Any)===(other : YAML::Any)
===(other) ===, =~(other) =~, as(type : Class) as, as?(type : Class) as?, class class, dup dup, hash(hasher)
hash hash, in?(*values : Object) : Bool
in?(collection) : Bool in?, inspect : String
inspect(io : IO) : Nil inspect, is_a?(type : Class) : Bool is_a?, itself itself, nil? : Bool nil?, not_nil! not_nil!, pretty_inspect(width = 79, newline = "\n", indent = 0) : String pretty_inspect, pretty_print(pp : PrettyPrint) : Nil pretty_print, responds_to?(name : Symbol) : Bool responds_to?, tap(&) tap, to_json(io : IO)
to_json to_json, to_pretty_json(io : IO, indent : String = " ")
to_pretty_json(indent : String = " ") to_pretty_json, to_s : String
to_s(io : IO) : Nil to_s, to_yaml(io : IO)
to_yaml to_yaml, try(&) try, unsafe_as(type : T.class) forall T unsafe_as
Class methods inherited from class Object
from_json(string_or_io, root : String)from_json(string_or_io) from_json, from_yaml(string_or_io : String | IO) from_yaml
Constructor Detail
Creates a named UNIX socket, listening on a filesystem pathname.
Always deletes any existing filesystam pathname first, in order to cleanup any leftover socket file.
The server is of stream type by default, but this can be changed for another type. For example datagram messages:
UNIXServer.new("/tmp/dgram.sock", Socket::Type::DGRAM)
Creates a UNIXServer from an already configured raw file descriptor
Class Method Detail
Creates a new UNIX server and yields it to the block. Eventually closes the server socket when the block returns.
Returns the value of the block.
Instance Method Detail
Accepts an incoming connection.
Returns the client socket or nil
if the server is closed after invoking
this method.