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# This file is a part of Julia. License is MIT: http://julialang.org/license
## IP ADDRESS HANDLING ##
abstract IPAddr
Base.isless{T<:IPAddr}(a::T, b::T) = isless(a.host, b.host)
Base.convert{T<:Integer}(dt::Type{T}, ip::IPAddr) = dt(ip.host)
immutable IPv4 <: IPAddr
host::UInt32
IPv4(host::UInt32) = new(host)
IPv4(a::UInt8,b::UInt8,c::UInt8,d::UInt8) = new(UInt32(a)<<24|
UInt32(b)<<16|
UInt32(c)<<8|
d)
function IPv4(a::Integer,b::Integer,c::Integer,d::Integer)
if !(0<=a<=255 && 0<=b<=255 && 0<=c<=255 && 0<=d<=255)
throw(ArgumentError("IPv4 field out of range (must be 0-255)"))
end
IPv4(UInt8(a),UInt8(b),UInt8(c),UInt8(d))
end
end
"""
IPv4(host::Integer) -> IPv4
Returns an IPv4 object from ip address `host` formatted as an `Integer`.
"""
function IPv4(host::Integer)
if host < 0
throw(ArgumentError("IPv4 address must be positive"))
elseif typemax(typeof(host)) > typemax(UInt32) && host > typemax(UInt32)
throw(ArgumentError("IPv4 address must fit within 32 bits"))
else
return IPv4(UInt32(host))
end
end
# constructor: ("1.2.3.4")
IPv4(str::AbstractString) = parse(IPv4, str)
show(io::IO,ip::IPv4) = print(io,"ip\"",ip,"\"")
print(io::IO,ip::IPv4) = print(io,dec((ip.host&(0xFF000000))>>24),".",
dec((ip.host&(0xFF0000))>>16),".",
dec((ip.host&(0xFF00))>>8),".",
dec(ip.host&0xFF))
immutable IPv6 <: IPAddr
host::UInt128
IPv6(host::UInt128) = new(host)
IPv6(a::UInt16,b::UInt16,c::UInt16,d::UInt16,
e::UInt16,f::UInt16,g::UInt16,h::UInt16) = new(UInt128(a)<<(7*16)|
UInt128(b)<<(6*16)|
UInt128(c)<<(5*16)|
UInt128(d)<<(4*16)|
UInt128(e)<<(3*16)|
UInt128(f)<<(2*16)|
UInt128(g)<<(1*16)|
h)
function IPv6(a::Integer,b::Integer,c::Integer,d::Integer,
e::Integer,f::Integer,g::Integer,h::Integer)
if !(0<=a<=0xFFFF && 0<=b<=0xFFFF && 0<=c<=0xFFFF && 0<=d<=0xFFFF &&
0<=e<=0xFFFF && 0<=f<=0xFFFF && 0<=g<=0xFFFF && 0<=h<=0xFFFF)
throw(ArgumentError("IPv6 field out of range (must be 0-65535)"))
end
IPv6(UInt16(a),UInt16(b),UInt16(c),UInt16(d),
UInt16(e),UInt16(f),UInt16(g),UInt16(h))
end
end
"""
IPv6(host::Integer) -> IPv6
Returns an IPv6 object from ip address `host` formatted as an `Integer`.
"""
function IPv6(host::Integer)
if host < 0
throw(ArgumentError("IPv6 address must be positive"))
# We allow passing bigger integer types, but need to be careful to avoid overflow
# Let's hope promotion rules are sensible
elseif typemax(typeof(host)) > typemax(UInt128) && host > typemax(UInt128)
throw(ArgumentError("IPv6 address must fit within 128 bits"))
else
return IPv6(UInt128(host))
end
end
IPv6(str::AbstractString) = parse(IPv6, str)
# Suppress leading '0's and "0x"
print_ipv6_field(io,field::UInt16) = print(io,hex(field))
print_ipv6_field(io,ip,i) = print_ipv6_field(io,ipv6_field(ip,i))
function ipv6_field(ip::IPv6,i)
if i < 0 || i > 7
throw(BoundsError())
end
UInt16(ip.host&(UInt128(0xFFFF)<<(i*16))>>(i*16))
end
show(io::IO, ip::IPv6) = print(io,"ip\"",ip,"\"")
# RFC 5952 compliant show function
# http://tools.ietf.org/html/rfc5952
function print(io::IO,ip::IPv6)
i = 8
m = 0
longest_sub_i = -1
while i!=0
i-=1
field = ipv6_field(ip,i)
if field == 0 && longest_sub_i == -1
# Find longest subsequence of 0
longest_sub_i,j,m,c = i,i,1,1
while j != 0
j-=1
if ipv6_field(ip,j) == 0
c += 1
else
c = 0
end
if c > m
if j+c != longest_sub_i+1
longest_sub_i = j+c-1
end
m = c
end
end
# Prevent single 0 from contracting to :: as required
if m == 1
longest_sub_i = 9
end
end
if i == longest_sub_i
print(io,":")
i -= m-1
if i == 0
print(io,":")
break
end
else
if i != 7
print(io,":")
end
print_ipv6_field(io,field)
end
end
end
# Parsing
function parse(::Type{IPv4}, str::AbstractString)
fields = split(str,'.')
i = 1
ret = 0
for f in fields
if isempty(f)
throw(ArgumentError("empty field in IPv4 address"))
end
if f[1] == '0'
if length(f) >= 2 && f[2] == 'x'
if length(f) > 8 # 2+(3*2) - prevent parseint from overflowing on 32bit
throw(ArgumentError("IPv4 field too large"))
end
r = parse(Int,f[3:end],16)
else
if length(f) > 9 # 1+8 - prevent parseint from overflowing on 32bit
throw(ArgumentError("IPv4 field too large"))
end
r = parse(Int,f,8)
end
else
r = parse(Int,f,10)
end
if i != length(fields)
if r < 0 || r > 255
throw(ArgumentError("IPv4 field out of range (must be 0-255)"))
end
ret |= UInt32(r) << ((4-i)*8)
else
if r > ((UInt64(1)<<((5-length(fields))*8))-1)
throw(ArgumentError("IPv4 field too large"))
end
ret |= r
end
i+=1
end
IPv4(ret)
end
function parseipv6fields(fields,num_fields)
if length(fields) > num_fields
throw(ArgumentError("too many fields in IPv6 address"))
end
cf = 7
ret = UInt128(0)
for f in fields
if f == ""
# ::abc:... and ..:abc::
if cf != 7 && cf != 0
cf -= num_fields-length(fields)
end
cf -= 1
continue
end
ret |= UInt128(parse(Int,f,16))<<(cf*16)
cf -= 1
end
ret
end
parseipv6fields(fields) = parseipv6fields(fields,8)
function parse(::Type{IPv6}, str::AbstractString)
fields = split(str,':')
if length(fields) > 8
throw(ArgumentError("too many fields in IPv6 address"))
elseif length(fields) == 8
return IPv6(parseipv6fields(fields))
elseif in('.',fields[end])
return IPv6((parseipv6fields(fields[1:(end-1)],6))
| parse(IPv4, fields[end]).host )
else
return IPv6(parseipv6fields(fields))
end
end
#
# This support IPv4 addresses in the common dot (IPv4) or colon (IPv6)
# separated formats. Most other common formats use a standard integer encoding
# of the appropriate size and should use the appropriate constructor
#
function parse(::Type{IPAddr}, str::AbstractString)
if ':' in str
return parse(IPv6, str)
else
return parse(IPv4, str)
end
end
macro ip_str(str)
return parse(IPAddr, str)
end
immutable InetAddr{T<:IPAddr}
host::T
port::UInt16
end
InetAddr(ip::IPAddr, port) = InetAddr{typeof(ip)}(ip, port)
## SOCKETS ##
type TCPSocket <: LibuvStream
handle::Ptr{Void}
status::Int
buffer::IOBuffer
readnotify::Condition
connectnotify::Condition
closenotify::Condition
sendbuf::Nullable{IOBuffer}
lock::ReentrantLock
throttle::Int
function TCPSocket(handle::Ptr{Void}, status)
tcp = new(
handle,
status,
PipeBuffer(),
Condition(),
Condition(),
Condition(),
nothing,
ReentrantLock(),
DEFAULT_READ_BUFFER_SZ)
associate_julia_struct(tcp.handle, tcp)
finalizer(tcp, uvfinalize)
return tcp
end
end
function TCPSocket()
tcp = TCPSocket(Libc.malloc(_sizeof_uv_tcp), StatusUninit)
err = ccall(:uv_tcp_init, Cint, (Ptr{Void}, Ptr{Void}),
eventloop(), tcp.handle)
uv_error("failed to create tcp socket", err)
tcp.status = StatusInit
return tcp
end
type TCPServer <: LibuvServer
handle::Ptr{Void}
status::Int
connectnotify::Condition
closenotify::Condition
function TCPServer(handle::Ptr{Void}, status)
tcp = new(
handle,
status,
Condition(),
Condition())
associate_julia_struct(tcp.handle, tcp)
finalizer(tcp, uvfinalize)
return tcp
end
end
function TCPServer()
tcp = TCPServer(Libc.malloc(_sizeof_uv_tcp), StatusUninit)
err = ccall(:uv_tcp_init, Cint, (Ptr{Void}, Ptr{Void}),
eventloop(), tcp.handle)
uv_error("failed to create tcp server", err)
tcp.status = StatusInit
return tcp
end
isreadable(io::TCPSocket) = isopen(io) || nb_available(io) > 0
iswritable(io::TCPSocket) = isopen(io) && io.status != StatusClosing
## VARIOUS METHODS TO BE MOVED TO BETTER LOCATION
_jl_connect_raw(sock::TCPSocket, sockaddr::Ptr{Void}) =
ccall(:jl_connect_raw, Int32, (Ptr{Void}, Ptr{Void}, Ptr{Void}), sock.handle, sockaddr, uv_jl_connectcb::Ptr{Void})
_jl_sockaddr_from_addrinfo(addrinfo::Ptr{Void}) =
ccall(:jl_sockaddr_from_addrinfo, Ptr{Void}, (Ptr{Void}, ), addrinfo)
_jl_sockaddr_set_port(ptr::Ptr{Void}, port::UInt16) =
ccall(:jl_sockaddr_set_port, Void, (Ptr{Void}, UInt16), ptr, port)
accept(server::TCPServer) = accept(server, TCPSocket())
# Libuv will internally reset the readable and writable flags on
# this pipe after it has successfully accepted the connection, to
# remember that before that this is an invalid pipe
accept(server::PipeServer) = accept(server, init_pipe!(PipeEndpoint();
readable=false, writable=false, julia_only=true))
# UDP
type UDPSocket <: LibuvStream
handle::Ptr{Void}
status::Int
recvnotify::Condition
sendnotify::Condition
closenotify::Condition
function UDPSocket(handle::Ptr{Void}, status)
udp = new(
handle,
status,
Condition(),
Condition(),
Condition())
associate_julia_struct(udp.handle, udp)
finalizer(udp, uvfinalize)
return udp
end
end
function UDPSocket()
this = UDPSocket(Libc.malloc(_sizeof_uv_udp), StatusUninit)
err = ccall(:uv_udp_init, Cint, (Ptr{Void}, Ptr{Void}),
eventloop(), this.handle)
uv_error("failed to create udp socket", err)
this.status = StatusInit
return this
end
show(io::IO, stream::UDPSocket) = print(io, typeof(stream), "(", uv_status_string(stream), ")")
function _uv_hook_close(sock::UDPSocket)
sock.handle = C_NULL
sock.status = StatusClosed
notify(sock.closenotify)
notify(sock.sendnotify)
notify_error(sock.recvnotify,EOFError())
end
# Disables dual stack mode.
const UV_TCP_IPV6ONLY = 1
# Disables dual stack mode. Only available when using ipv6 binf
const UV_UDP_IPV6ONLY = 1
# Indicates message was truncated because read buffer was too small. The
# remainder was discarded by the OS.
const UV_UDP_PARTIAL = 2
# Indicates if SO_REUSEADDR will be set when binding the handle in uv_udp_bind. This sets
# the SO_REUSEPORT socket flag on the BSDs and OS X. On other Unix platforms, it sets the
# SO_REUSEADDR flag. What that means is that multiple threads or processes can bind to the
# same address without error (provided they all set the flag) but only the last one to bind
# will receive any traffic, in effect "stealing" the port from the previous listener.
const UV_UDP_REUSEADDR = 4
##
_bind(sock::TCPServer, host::IPv4, port::UInt16, flags::UInt32 = UInt32(0)) = ccall(:jl_tcp_bind, Int32, (Ptr{Void}, UInt16, UInt32, Cuint),
sock.handle, hton(port), hton(host.host), flags)
_bind(sock::TCPServer, host::IPv6, port::UInt16, flags::UInt32 = UInt32(0)) = ccall(:jl_tcp_bind6, Int32, (Ptr{Void}, UInt16, Ptr{UInt128}, Cuint),
sock.handle, hton(port), Ref(hton(host.host)), flags)
_bind(sock::UDPSocket, host::IPv4, port::UInt16, flags::UInt32 = UInt32(0)) = ccall(:jl_udp_bind, Int32, (Ptr{Void}, UInt16, UInt32, UInt32),
sock.handle, hton(port), hton(host.host), flags)
_bind(sock::UDPSocket, host::IPv6, port::UInt16, flags::UInt32 = UInt32(0)) = ccall(:jl_udp_bind6, Int32, (Ptr{Void}, UInt16, Ptr{UInt128}, UInt32),
sock.handle, hton(port), Ref(hton(host.host)), flags)
"""
bind(socket::Union{UDPSocket, TCPSocket}, host::IPAddr, port::Integer; ipv6only=false, reuseaddr=false, kws...)
Bind `socket` to the given `host:port`. Note that `0.0.0.0` will listen on all devices.
* The `ipv6only` parameter disables dual stack mode. If `ipv6only=true`, only an IPv6 stack is created.
* If `reuseaddr=true`, multiple threads or processes can bind to the same address without error
if they all set `reuseaddr=true`, but only the last to bind will receive any traffic.
"""
function bind(sock::Union{TCPServer, UDPSocket}, host::IPAddr, port::Integer; ipv6only = false, reuseaddr = false, kws...)
if sock.status != StatusInit
error("$(typeof(sock)) is not in initialization state")
end
flags = 0
if isa(host,IPv6) && ipv6only
flags |= isa(sock, UDPSocket) ? UV_UDP_IPV6ONLY : UV_TCP_IPV6ONLY
end
if isa(sock, UDPSocket) && reuseaddr
flags |= UV_UDP_REUSEADDR
end
err = _bind(sock, host, UInt16(port), UInt32(flags))
if err < 0
if err != UV_EADDRINUSE && err != UV_EACCES && err != UV_EADDRNOTAVAIL
#TODO: this codepath is not currently tested
throw(UVError("bind", err))
else
return false
end
end
sock.status = StatusOpen
isa(sock, UDPSocket) && setopt(sock; kws...)
return true
end
bind(sock::TCPServer, addr::InetAddr) = bind(sock, addr.host, addr.port)
"""
setopt(sock::UDPSocket; multicast_loop = nothing, multicast_ttl=nothing, enable_broadcast=nothing, ttl=nothing)
Set UDP socket options.
* `multicast_loop`: loopback for multicast packets (default: `true`).
* `multicast_ttl`: TTL for multicast packets (default: `nothing`).
* `enable_broadcast`: flag must be set to `true` if socket will be used for broadcast messages,
or else the UDP system will return an access error (default: `false`).
* `ttl`: Time-to-live of packets sent on the socket (default: `nothing`).
"""
function setopt(sock::UDPSocket; multicast_loop = nothing, multicast_ttl=nothing, enable_broadcast=nothing, ttl=nothing)
if sock.status == StatusUninit
error("Cannot set options on uninitialized socket")
end
if multicast_loop !== nothing
uv_error("multicast_loop",ccall(:uv_udp_set_multicast_loop,Cint,(Ptr{Void},Cint),sock.handle,multicast_loop) < 0)
end
if multicast_ttl !== nothing
uv_error("multicast_ttl",ccall(:uv_udp_set_multicast_ttl,Cint,(Ptr{Void},Cint),sock.handle,multicast_ttl))
end
if enable_broadcast !== nothing
uv_error("enable_broadcast",ccall(:uv_udp_set_broadcast,Cint,(Ptr{Void},Cint),sock.handle,enable_broadcast))
end
if ttl !== nothing
uv_error("ttl",ccall(:uv_udp_set_ttl,Cint,(Ptr{Void},Cint),sock.handle,ttl))
end
end
alloc_buf_hook(sock::UDPSocket,size::UInt) = (Libc.malloc(size),size)
function _recv_start(sock::UDPSocket)
if ccall(:uv_is_active, Cint, (Ptr{Void}, ), sock.handle) == 0
uv_error("recv_start", ccall(:uv_udp_recv_start, Cint, (Ptr{Void}, Ptr{Void}, Ptr{Void}),
sock.handle, uv_jl_alloc_buf::Ptr{Void}, uv_jl_recvcb::Ptr{Void}))
end
end
_recv_stop(sock::UDPSocket) = uv_error("recv_stop", ccall(:uv_udp_recv_stop, Cint, (Ptr{Void}, ), sock.handle))
"""
recv(socket::UDPSocket)
Read a UDP packet from the specified socket, and return the bytes received. This call blocks.
"""
function recv(sock::UDPSocket)
addr, data = recvfrom(sock)
data
end
"""
recvfrom(socket::UDPSocket) -> (address, data)
Read a UDP packet from the specified socket, returning a tuple of (address, data), where
address will be either IPv4 or IPv6 as appropriate.
"""
function recvfrom(sock::UDPSocket)
# If the socket has not been bound, it will be bound implicitly to ::0 and a random port
if sock.status != StatusInit && sock.status != StatusOpen
error("UDPSocket is not initialized and open")
end
_recv_start(sock)
return stream_wait(sock, sock.recvnotify)::Tuple{Union{IPv4, IPv6}, Vector{UInt8}}
end
function uv_recvcb(handle::Ptr{Void}, nread::Cssize_t, buf::Ptr{Void}, addr::Ptr{Void}, flags::Cuint)
sock = @handle_as handle UDPSocket
buf_addr = ccall(:jl_uv_buf_base, Ptr{Void}, (Ptr{Void},), buf)
buf_size = ccall(:jl_uv_buf_len, Csize_t, (Ptr{Void},), buf)
# C signature documented as (*uv_udp_recv_cb)(...)
if flags & UV_UDP_PARTIAL > 0
Libc.free(buf_addr)
notify_error(sock.recvnotify,"Partial message received")
end
# need to check the address type in order to convert to a Julia IPAddr
addrout = if (addr == C_NULL)
IPv4(0)
elseif ccall(:jl_sockaddr_in_is_ip4, Cint, (Ptr{Void},), addr) == 1
IPv4(ntoh(ccall(:jl_sockaddr_host4, UInt32, (Ptr{Void},), addr)))
else
tmp = [UInt128(0)]
ccall(:jl_sockaddr_host6, UInt32, (Ptr{Void}, Ptr{UInt8}), addr, pointer(tmp))
IPv6(ntoh(tmp[1]))
end
buf = unsafe_wrap(Array, convert(Ptr{UInt8},buf_addr),Int(buf_size),true)
notify(sock.recvnotify,(addrout,buf[1:nread]))
nothing
end
function _send(sock::UDPSocket, ipaddr::IPv4, port::UInt16, buf)
ccall(:jl_udp_send, Cint, (Ptr{Void}, UInt16, UInt32, Ptr{UInt8}, Csize_t, Ptr{Void}),
sock.handle, hton(port), hton(ipaddr.host), buf, sizeof(buf), uv_jl_sendcb::Ptr{Void})
end
function _send(sock::UDPSocket, ipaddr::IPv6, port::UInt16, buf)
ccall(:jl_udp_send6, Cint, (Ptr{Void}, UInt16, Ptr{UInt128}, Ptr{UInt8}, Csize_t, Ptr{Void}),
sock.handle, hton(port), &hton(ipaddr.host), buf, sizeof(buf), uv_jl_sendcb::Ptr{Void})
end
"""
send(socket::UDPSocket, host, port::Integer, msg)
Send `msg` over `socket` to `host:port`.
"""
function send(sock::UDPSocket,ipaddr,port,msg)
# If the socket has not been bound, it will be bound implicitly to ::0 and a random port
if sock.status != StatusInit && sock.status != StatusOpen
error("UDPSocket is not initialized and open")
end
uv_error("send", _send(sock, ipaddr, UInt16(port), msg))
stream_wait(sock, sock.sendnotify)
nothing
end
function uv_sendcb(handle::Ptr{Void}, status::Cint)
sock = @handle_as handle UDPSocket
if status < 0
notify_error(sock.sendnotify,UVError("UDP send failed",status))
end
notify(sock.sendnotify)
Libc.free(handle)
nothing
end
##
type DNSError <: Exception
host::AbstractString
code::Int32
end
function show(io::IO, err::DNSError)
print(io, "DNSError: ", err.host, ", ", struverror(err.code),
" (", uverrorname(err.code), ")")
end
callback_dict = ObjectIdDict()
function uv_getaddrinfocb(req::Ptr{Void}, status::Cint, addrinfo::Ptr{Void})
data = ccall(:jl_uv_getaddrinfo_data, Ptr{Void}, (Ptr{Void},), req)
data == C_NULL && return
cb = unsafe_pointer_to_objref(data)::Function
pop!(callback_dict,cb) # using pop forces an error if cb not in callback_dict
if status != 0 || addrinfo == C_NULL
cb(UVError("uv_getaddrinfocb received an unexpected status code", status))
else
freeaddrinfo = addrinfo
while addrinfo != C_NULL
sockaddr = ccall(:jl_sockaddr_from_addrinfo, Ptr{Void}, (Ptr{Void},), addrinfo)
if ccall(:jl_sockaddr_is_ip4, Int32, (Ptr{Void},), sockaddr) == 1
cb(IPv4(ntoh(ccall(:jl_sockaddr_host4, UInt32, (Ptr{Void},), sockaddr))))
break
#elseif ccall(:jl_sockaddr_is_ip6, Int32, (Ptr{Void},), sockaddr) == 1
# host = Array{UInt128}(1)
# scope_id = ccall(:jl_sockaddr_host6, UInt32, (Ptr{Void}, Ptr{UInt128}), sockaddr, host)
# cb(IPv6(ntoh(host[1])))
# break
end
addrinfo = ccall(:jl_next_from_addrinfo, Ptr{Void}, (Ptr{Void},), addrinfo)
end
ccall(:uv_freeaddrinfo, Void, (Ptr{Void},), freeaddrinfo)
end
Libc.free(req)
nothing
end
function getaddrinfo(cb::Function, host::String)
isascii(host) || error("non-ASCII hostname: $host")
callback_dict[cb] = cb
status = ccall(:jl_getaddrinfo, Int32, (Ptr{Void}, Cstring, Ptr{UInt8}, Any, Ptr{Void}),
eventloop(), host, C_NULL, cb, uv_jl_getaddrinfocb::Ptr{Void})
if status == UV_EINVAL
throw(ArgumentError("Invalid uv_getaddrinfo() agument"))
elseif status in [UV_ENOMEM, UV_ENOBUFS]
throw(OutOfMemoryError())
elseif status < 0
throw(UVError("uv_getaddrinfo returned an unexpected error code", status))
end
return nothing
end
getaddrinfo(cb::Function, host::AbstractString) = getaddrinfo(cb, String(host))
"""
getaddrinfo(host::AbstractString) -> IPAddr
Gets the IP address of the `host` (may have to do a DNS lookup)
"""
function getaddrinfo(host::String)
c = Condition()
getaddrinfo(host) do IP
notify(c,IP)
end
r = wait(c)
if isa(r,UVError)
if r.code in [UV_EAI_NONAME, UV_EAI_AGAIN, UV_EAI_FAIL, UV_EAI_NODATA]
throw(DNSError(host, r.code))
elseif r.code == UV_EAI_SYSTEM
throw(SystemError("uv_getaddrinfocb"))
elseif r.code == UV_EAI_MEMORY
throw(OutOfMemoryError())
else
throw(r)
end
end
return r::IPAddr
end
getaddrinfo(host::AbstractString) = getaddrinfo(String(host))
const _sizeof_uv_interface_address = ccall(:jl_uv_sizeof_interface_address,Int32,())
"""
getipaddr() -> IPAddr
Get the IP address of the local machine.
"""
function getipaddr()
addr = Array{Ptr{UInt8}}(1)
addr[1] = C_NULL
count = zeros(Int32,1)
lo_present = false
err = ccall(:jl_uv_interface_addresses, Int32, (Ptr{Ptr{UInt8}}, Ptr{Int32}), addr, count)
addr, count = addr[1], count[1]
if err != 0
ccall(:uv_free_interface_addresses, Void, (Ptr{UInt8}, Int32), addr, count)
throw(UVError("getlocalip", err))
end
for i = 0:(count-1)
current_addr = addr + i*_sizeof_uv_interface_address
if 1 == ccall(:jl_uv_interface_address_is_internal, Int32, (Ptr{UInt8},), current_addr)
lo_present = true
continue
end
sockaddr = ccall(:jl_uv_interface_address_sockaddr, Ptr{Void}, (Ptr{UInt8},), current_addr)
if ccall(:jl_sockaddr_in_is_ip4, Int32, (Ptr{Void},), sockaddr) == 1
rv = IPv4(ntoh(ccall(:jl_sockaddr_host4, UInt32, (Ptr{Void},), sockaddr)))
ccall(:uv_free_interface_addresses, Void, (Ptr{UInt8}, Int32), addr, count)
return rv
# Uncomment to enbable IPv6
#elseif ccall(:jl_sockaddr_in_is_ip6, Int32, (Ptr{Void},), sockaddr) == 1
# host = Array{UInt128}(1)
# ccall(:jl_sockaddr_host6, UInt32, (Ptr{Void}, Ptr{UInt128}), sockaddrr, host)
# return IPv6(ntoh(host[1]))
end
end
ccall(:uv_free_interface_addresses, Void, (Ptr{UInt8}, Int32), addr, count)
return lo_present ? ip"127.0.0.1" : error("No networking interface available")
end
##
function connect!(sock::TCPSocket, host::IPv4, port::Integer)
if sock.status != StatusInit
error("TCPSocket is not in initialization state")
end
if !(0 <= port <= typemax(UInt16))
throw(ArgumentError("port out of range, must be 0 ≤ port ≤ 65535, got $port"))
end
uv_error("connect", ccall(:jl_tcp4_connect, Int32, (Ptr{Void}, UInt32, UInt16, Ptr{Void}),
sock.handle, hton(host.host), hton(UInt16(port)), uv_jl_connectcb::Ptr{Void}))
sock.status = StatusConnecting
nothing
end
function connect!(sock::TCPSocket, host::IPv6, port::Integer)
if sock.status != StatusInit
error("TCPSocket is not in initialization state")
end
if !(0 <= port <= typemax(UInt16))
throw(ArgumentError("port out of range, must be 0 ≤ port ≤ 65535, got $port"))
end
uv_error("connect", ccall(:jl_tcp6_connect, Int32, (Ptr{Void}, Ptr{UInt128}, UInt16, Ptr{Void}),
sock.handle, &hton(host.host), hton(UInt16(port)), uv_jl_connectcb::Ptr{Void}))
sock.status = StatusConnecting
nothing
end
connect!(sock::TCPSocket, addr::InetAddr) = connect!(sock, addr.host, addr.port)
# Default Host to localhost
"""
connect([host], port::Integer) -> TCPSocket
Connect to the host `host` on port `port`.
"""
connect(sock::TCPSocket, port::Integer) = connect(sock,IPv4(127,0,0,1), port)
connect(port::Integer) = connect(IPv4(127,0,0,1), port)
# Valid connect signatures for TCP
connect(host::AbstractString, port::Integer) = connect(TCPSocket(), host, port)
connect(addr::IPAddr, port::Integer) = connect(TCPSocket(), addr, port)
connect(addr::InetAddr) = connect(TCPSocket(), addr)
default_connectcb(sock,status) = nothing
function connect!(sock::TCPSocket, host::AbstractString, port::Integer)
if sock.status != StatusInit
error("TCPSocket is not in initialization state")
end
ipaddr = getaddrinfo(host)
sock.status = StatusInit
connect!(sock,ipaddr,port)
sock.status = StatusConnecting
return sock
end
##
"""
listen([addr, ]port::Integer; backlog::Integer=BACKLOG_DEFAULT) -> TCPServer
Listen on port on the address specified by `addr`.
By default this listens on `localhost` only.
To listen on all interfaces pass `IPv4(0)` or `IPv6(0)` as appropriate.
`backlog` determines how many connections can be pending (not having
called [`accept`](:func:`accept`)) before the server will begin to
reject them. The default value of `backlog` is 511.
"""
function listen(addr; backlog::Integer=BACKLOG_DEFAULT)
sock = TCPServer()
!bind(sock, addr) && error("cannot bind to port; may already be in use or access denied")
listen(sock; backlog=backlog)
return sock
end
listen(port::Integer; backlog::Integer=BACKLOG_DEFAULT) = listen(IPv4(UInt32(0)), port; backlog=backlog)
listen(host::IPAddr, port::Integer; backlog::Integer=BACKLOG_DEFAULT) = listen(InetAddr(host, port); backlog=backlog)
function listen(callback, server::Union{TCPSocket, UDPSocket})
@async begin
local client = TCPSocket()
while isopen(server)
err = accept_nonblock(server, client)
if err == 0
callback(client)
client = TCPSocket()
elseif err != UV_EAGAIN
uv_error("accept", err)
else
stream_wait(server, server.connectnotify)
end
end
end
return sock
end
##
function accept_nonblock(server::TCPServer, client::TCPSocket)
if client.status != StatusInit
error("client TCPSocket is not in initialization state")
end
err = ccall(:uv_accept, Int32, (Ptr{Void}, Ptr{Void}), server.handle, client.handle)
if err == 0
client.status = StatusOpen
end
return err
end
function accept_nonblock(server::TCPServer)
client = TCPSocket()
uv_error("accept", accept_nonblock(server, client))
return client
end
## Utility functions
"""
listenany([host::IPAddr,] port_hint) -> (UInt16, TCPServer)
Create a `TCPServer` on any port, using hint as a starting point. Returns a tuple of the
actual port that the server was created on and the server itself.
"""
function listenany(host::IPAddr, default_port)
addr = InetAddr(host, default_port)
while true
sock = TCPServer()
if bind(sock, addr) && trylisten(sock) == 0
return (addr.port, sock)
end
close(sock)
addr = InetAddr(addr.host, addr.port + 1)
if addr.port == default_port
error("no ports available")
end
end
end
listenany(default_port) = listenany(IPv4(UInt32(0)), default_port)
"""
getsockname(sock::Union{TCPServer, TCPSocket}) -> (IPAddr, UInt16)
Get the IP address and the port that the given `TCPSocket` is connected to
(or bound to, in the case of `TCPServer`).
"""
function getsockname(sock::Union{TCPServer,TCPSocket})
rport = Ref{Cushort}(0)
raddress = zeros(UInt8, 16)
rfamily = Ref{Cuint}(0)
r = if isa(sock, TCPServer)
ccall(:jl_tcp_getsockname, Int32,
(Ptr{Void}, Ref{Cushort}, Ptr{Void}, Ref{Cuint}),
sock.handle, rport, raddress, rfamily)
else
ccall(:jl_tcp_getpeername, Int32,
(Ptr{Void}, Ref{Cushort}, Ptr{Void}, Ref{Cuint}),
sock.handle, rport, raddress, rfamily)
end
uv_error("cannot obtain socket name", r)
if r == 0
port = ntoh(rport[])
if rfamily[] == 2 # AF_INET
addrv4 = raddress[1:4]
naddr = ntoh(unsafe_load(Ptr{Cuint}(pointer(addrv4)), 1))
addr = IPv4(naddr)
elseif rfamily[] == @static is_windows() ? 23 : (@static is_apple() ? 30 : 10) # AF_INET6
naddr = ntoh(unsafe_load(Ptr{UInt128}(pointer(raddress)), 1))
addr = IPv6(naddr)
else
error("unsupported address family: $(getindex(rfamily))")
end
else
error("cannot obtain socket name")
end
return addr, port
end