896 lines
30 KiB
Julia
896 lines
30 KiB
Julia
# This file is a part of Julia. License is MIT: https://julialang.org/license
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## IP ADDRESS HANDLING ##
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abstract type IPAddr end
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Base.isless{T<:IPAddr}(a::T, b::T) = isless(a.host, b.host)
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Base.convert(dt::Type{<:Integer}, ip::IPAddr) = dt(ip.host)
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struct IPv4 <: IPAddr
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host::UInt32
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IPv4(host::UInt32) = new(host)
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IPv4(a::UInt8,b::UInt8,c::UInt8,d::UInt8) = new(UInt32(a)<<24|
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UInt32(b)<<16|
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UInt32(c)<<8|
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d)
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function IPv4(a::Integer,b::Integer,c::Integer,d::Integer)
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if !(0<=a<=255 && 0<=b<=255 && 0<=c<=255 && 0<=d<=255)
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throw(ArgumentError("IPv4 field out of range (must be 0-255)"))
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end
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IPv4(UInt8(a),UInt8(b),UInt8(c),UInt8(d))
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end
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end
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"""
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IPv4(host::Integer) -> IPv4
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Returns an IPv4 object from ip address `host` formatted as an [`Integer`](@ref).
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```jldoctest
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julia> IPv4(3223256218)
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ip"192.30.252.154"
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```
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"""
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function IPv4(host::Integer)
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if host < 0
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throw(ArgumentError("IPv4 address must be positive"))
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elseif typemax(typeof(host)) > typemax(UInt32) && host > typemax(UInt32)
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throw(ArgumentError("IPv4 address must fit within 32 bits"))
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else
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return IPv4(UInt32(host))
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end
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end
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# constructor: ("1.2.3.4")
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IPv4(str::AbstractString) = parse(IPv4, str)
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show(io::IO,ip::IPv4) = print(io,"ip\"",ip,"\"")
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print(io::IO,ip::IPv4) = print(io,dec((ip.host&(0xFF000000))>>24),".",
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dec((ip.host&(0xFF0000))>>16),".",
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dec((ip.host&(0xFF00))>>8),".",
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dec(ip.host&0xFF))
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struct IPv6 <: IPAddr
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host::UInt128
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IPv6(host::UInt128) = new(host)
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IPv6(a::UInt16,b::UInt16,c::UInt16,d::UInt16,
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e::UInt16,f::UInt16,g::UInt16,h::UInt16) = new(UInt128(a)<<(7*16)|
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UInt128(b)<<(6*16)|
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UInt128(c)<<(5*16)|
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UInt128(d)<<(4*16)|
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UInt128(e)<<(3*16)|
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UInt128(f)<<(2*16)|
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UInt128(g)<<(1*16)|
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h)
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function IPv6(a::Integer,b::Integer,c::Integer,d::Integer,
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e::Integer,f::Integer,g::Integer,h::Integer)
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if !(0<=a<=0xFFFF && 0<=b<=0xFFFF && 0<=c<=0xFFFF && 0<=d<=0xFFFF &&
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0<=e<=0xFFFF && 0<=f<=0xFFFF && 0<=g<=0xFFFF && 0<=h<=0xFFFF)
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throw(ArgumentError("IPv6 field out of range (must be 0-65535)"))
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end
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IPv6(UInt16(a),UInt16(b),UInt16(c),UInt16(d),
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UInt16(e),UInt16(f),UInt16(g),UInt16(h))
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end
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end
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"""
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IPv6(host::Integer) -> IPv6
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Returns an IPv6 object from ip address `host` formatted as an [`Integer`](@ref).
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```jldoctest
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julia> IPv6(3223256218)
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ip"::c01e:fc9a"
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```
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"""
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function IPv6(host::Integer)
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if host < 0
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throw(ArgumentError("IPv6 address must be positive"))
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# We allow passing bigger integer types, but need to be careful to avoid overflow
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# Let's hope promotion rules are sensible
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elseif typemax(typeof(host)) > typemax(UInt128) && host > typemax(UInt128)
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throw(ArgumentError("IPv6 address must fit within 128 bits"))
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else
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return IPv6(UInt128(host))
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end
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end
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IPv6(str::AbstractString) = parse(IPv6, str)
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# Suppress leading '0's and "0x"
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print_ipv6_field(io,field::UInt16) = print(io,hex(field))
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print_ipv6_field(io,ip,i) = print_ipv6_field(io,ipv6_field(ip,i))
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function ipv6_field(ip::IPv6,i)
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if i < 0 || i > 7
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throw(BoundsError())
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end
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UInt16(ip.host&(UInt128(0xFFFF)<<(i*16))>>(i*16))
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end
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show(io::IO, ip::IPv6) = print(io,"ip\"",ip,"\"")
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# RFC 5952 compliant show function
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# http://tools.ietf.org/html/rfc5952
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function print(io::IO,ip::IPv6)
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i = 8
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m = 0
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longest_sub_i = -1
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while i!=0
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i-=1
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field = ipv6_field(ip,i)
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if field == 0 && longest_sub_i == -1
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# Find longest subsequence of 0
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longest_sub_i,j,m,c = i,i,1,1
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while j != 0
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j-=1
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if ipv6_field(ip,j) == 0
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c += 1
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else
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c = 0
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end
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if c > m
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if j+c != longest_sub_i+1
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longest_sub_i = j+c-1
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end
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m = c
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end
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end
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# Prevent single 0 from contracting to :: as required
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if m == 1
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longest_sub_i = 9
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end
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end
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if i == longest_sub_i
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print(io,":")
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i -= m-1
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if i == 0
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print(io,":")
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break
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end
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else
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if i != 7
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print(io,":")
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end
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print_ipv6_field(io,field)
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end
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end
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end
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# Parsing
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const ipv4_leading_zero_error = """
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Leading zeros in IPv4 addresses are disallowed due to ambiguity.
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If the address is in octal or hexadecimal, convert it to decimal, otherwise remove the leading zero.
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"""
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function parse(::Type{IPv4}, str::AbstractString)
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fields = split(str,'.')
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i = 1
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ret = 0
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for f in fields
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if isempty(f)
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throw(ArgumentError("empty field in IPv4 address"))
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end
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if length(f) > 1 && f[1] == '0'
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throw(ArgumentError(ipv4_leading_zero_error))
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else
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r = parse(Int,f,10)
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end
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if i != length(fields)
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if r < 0 || r > 255
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throw(ArgumentError("IPv4 field out of range (must be 0-255)"))
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end
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ret |= UInt32(r) << ((4-i)*8)
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else
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if r > ((UInt64(1)<<((5-length(fields))*8))-1)
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throw(ArgumentError("IPv4 field too large"))
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end
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ret |= r
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end
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i+=1
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end
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IPv4(ret)
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end
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function parseipv6fields(fields,num_fields)
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if length(fields) > num_fields
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throw(ArgumentError("too many fields in IPv6 address"))
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end
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cf = 7
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ret = UInt128(0)
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for f in fields
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if isempty(f)
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# ::abc:... and ..:abc::
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if cf != 7 && cf != 0
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cf -= num_fields-length(fields)
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end
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cf -= 1
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continue
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end
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ret |= UInt128(parse(Int,f,16))<<(cf*16)
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cf -= 1
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end
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ret
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end
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parseipv6fields(fields) = parseipv6fields(fields,8)
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function parse(::Type{IPv6}, str::AbstractString)
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fields = split(str,':')
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if length(fields) > 8
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throw(ArgumentError("too many fields in IPv6 address"))
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elseif length(fields) == 8
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return IPv6(parseipv6fields(fields))
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elseif in('.',fields[end])
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return IPv6((parseipv6fields(fields[1:(end-1)],6))
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| parse(IPv4, fields[end]).host )
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else
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return IPv6(parseipv6fields(fields))
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end
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end
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#
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# This support IPv4 addresses in the common dot (IPv4) or colon (IPv6)
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# separated formats. Most other common formats use a standard integer encoding
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# of the appropriate size and should use the appropriate constructor
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#
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function parse(::Type{IPAddr}, str::AbstractString)
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if ':' in str
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return parse(IPv6, str)
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else
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return parse(IPv4, str)
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end
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end
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macro ip_str(str)
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return parse(IPAddr, str)
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end
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struct InetAddr{T<:IPAddr}
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host::T
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port::UInt16
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end
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InetAddr(ip::IPAddr, port) = InetAddr{typeof(ip)}(ip, port)
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## SOCKETS ##
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mutable struct TCPSocket <: LibuvStream
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handle::Ptr{Void}
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status::Int
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buffer::IOBuffer
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readnotify::Condition
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connectnotify::Condition
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closenotify::Condition
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sendbuf::Nullable{IOBuffer}
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lock::ReentrantLock
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throttle::Int
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function TCPSocket(handle::Ptr{Void}, status)
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tcp = new(
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handle,
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status,
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PipeBuffer(),
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Condition(),
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Condition(),
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Condition(),
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nothing,
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ReentrantLock(),
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DEFAULT_READ_BUFFER_SZ)
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associate_julia_struct(tcp.handle, tcp)
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finalizer(tcp, uvfinalize)
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return tcp
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end
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end
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# kw arg "delay": if true, libuv delays creation of the socket fd till the first bind call
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function TCPSocket(; delay=true)
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tcp = TCPSocket(Libc.malloc(_sizeof_uv_tcp), StatusUninit)
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af_spec = delay ? 0 : 2 # AF_UNSPEC is 0, AF_INET is 2
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err = ccall(:uv_tcp_init_ex, Cint, (Ptr{Void}, Ptr{Void}, Cuint),
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eventloop(), tcp.handle, af_spec)
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uv_error("failed to create tcp socket", err)
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tcp.status = StatusInit
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return tcp
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end
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mutable struct TCPServer <: LibuvServer
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handle::Ptr{Void}
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status::Int
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connectnotify::Condition
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closenotify::Condition
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function TCPServer(handle::Ptr{Void}, status)
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tcp = new(
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handle,
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status,
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Condition(),
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Condition())
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associate_julia_struct(tcp.handle, tcp)
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finalizer(tcp, uvfinalize)
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return tcp
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end
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end
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function TCPServer()
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tcp = TCPServer(Libc.malloc(_sizeof_uv_tcp), StatusUninit)
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err = ccall(:uv_tcp_init, Cint, (Ptr{Void}, Ptr{Void}),
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eventloop(), tcp.handle)
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uv_error("failed to create tcp server", err)
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tcp.status = StatusInit
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return tcp
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end
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isreadable(io::TCPSocket) = isopen(io) || nb_available(io) > 0
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iswritable(io::TCPSocket) = isopen(io) && io.status != StatusClosing
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## VARIOUS METHODS TO BE MOVED TO BETTER LOCATION
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_jl_connect_raw(sock::TCPSocket, sockaddr::Ptr{Void}) =
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ccall(:jl_connect_raw, Int32, (Ptr{Void}, Ptr{Void}, Ptr{Void}), sock.handle, sockaddr, uv_jl_connectcb::Ptr{Void})
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_jl_sockaddr_from_addrinfo(addrinfo::Ptr{Void}) =
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ccall(:jl_sockaddr_from_addrinfo, Ptr{Void}, (Ptr{Void},), addrinfo)
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_jl_sockaddr_set_port(ptr::Ptr{Void}, port::UInt16) =
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ccall(:jl_sockaddr_set_port, Void, (Ptr{Void}, UInt16), ptr, port)
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accept(server::TCPServer) = accept(server, TCPSocket())
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# Libuv will internally reset the readable and writable flags on
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# this pipe after it has successfully accepted the connection, to
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# remember that before that this is an invalid pipe
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accept(server::PipeServer) = accept(server, init_pipe!(PipeEndpoint();
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readable=false, writable=false, julia_only=true))
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# UDP
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mutable struct UDPSocket <: LibuvStream
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handle::Ptr{Void}
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status::Int
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recvnotify::Condition
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sendnotify::Condition
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closenotify::Condition
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function UDPSocket(handle::Ptr{Void}, status)
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udp = new(
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handle,
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status,
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Condition(),
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Condition(),
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Condition())
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associate_julia_struct(udp.handle, udp)
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finalizer(udp, uvfinalize)
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return udp
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end
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end
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function UDPSocket()
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this = UDPSocket(Libc.malloc(_sizeof_uv_udp), StatusUninit)
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err = ccall(:uv_udp_init, Cint, (Ptr{Void}, Ptr{Void}),
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eventloop(), this.handle)
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uv_error("failed to create udp socket", err)
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this.status = StatusInit
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return this
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end
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show(io::IO, stream::UDPSocket) = print(io, typeof(stream), "(", uv_status_string(stream), ")")
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function _uv_hook_close(sock::UDPSocket)
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sock.handle = C_NULL
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sock.status = StatusClosed
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notify(sock.closenotify)
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notify(sock.sendnotify)
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notify_error(sock.recvnotify,EOFError())
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end
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# Disables dual stack mode.
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const UV_TCP_IPV6ONLY = 1
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# Disables dual stack mode. Only available when using ipv6 binf
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const UV_UDP_IPV6ONLY = 1
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# Indicates message was truncated because read buffer was too small. The
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# remainder was discarded by the OS.
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const UV_UDP_PARTIAL = 2
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# Indicates if SO_REUSEADDR will be set when binding the handle in uv_udp_bind. This sets
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# the SO_REUSEPORT socket flag on the BSDs and OS X. On other Unix platforms, it sets the
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# SO_REUSEADDR flag. What that means is that multiple threads or processes can bind to the
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# same address without error (provided they all set the flag) but only the last one to bind
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# will receive any traffic, in effect "stealing" the port from the previous listener.
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const UV_UDP_REUSEADDR = 4
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##
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_bind(sock::TCPServer, host::IPv4, port::UInt16, flags::UInt32 = UInt32(0)) = ccall(:jl_tcp_bind, Int32, (Ptr{Void}, UInt16, UInt32, Cuint),
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sock.handle, hton(port), hton(host.host), flags)
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_bind(sock::TCPServer, host::IPv6, port::UInt16, flags::UInt32 = UInt32(0)) = ccall(:jl_tcp_bind6, Int32, (Ptr{Void}, UInt16, Ptr{UInt128}, Cuint),
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sock.handle, hton(port), Ref(hton(host.host)), flags)
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_bind(sock::UDPSocket, host::IPv4, port::UInt16, flags::UInt32 = UInt32(0)) = ccall(:jl_udp_bind, Int32, (Ptr{Void}, UInt16, UInt32, UInt32),
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sock.handle, hton(port), hton(host.host), flags)
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_bind(sock::UDPSocket, host::IPv6, port::UInt16, flags::UInt32 = UInt32(0)) = ccall(:jl_udp_bind6, Int32, (Ptr{Void}, UInt16, Ptr{UInt128}, UInt32),
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sock.handle, hton(port), Ref(hton(host.host)), flags)
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"""
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bind(socket::Union{UDPSocket, TCPSocket}, host::IPAddr, port::Integer; ipv6only=false, reuseaddr=false, kws...)
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Bind `socket` to the given `host:port`. Note that `0.0.0.0` will listen on all devices.
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* The `ipv6only` parameter disables dual stack mode. If `ipv6only=true`, only an IPv6 stack is created.
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* If `reuseaddr=true`, multiple threads or processes can bind to the same address without error
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if they all set `reuseaddr=true`, but only the last to bind will receive any traffic.
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"""
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function bind(sock::Union{TCPServer, UDPSocket}, host::IPAddr, port::Integer; ipv6only = false, reuseaddr = false, kws...)
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if sock.status != StatusInit
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error("$(typeof(sock)) is not in initialization state")
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end
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flags = 0
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if isa(host,IPv6) && ipv6only
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flags |= isa(sock, UDPSocket) ? UV_UDP_IPV6ONLY : UV_TCP_IPV6ONLY
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end
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if isa(sock, UDPSocket) && reuseaddr
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flags |= UV_UDP_REUSEADDR
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end
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err = _bind(sock, host, UInt16(port), UInt32(flags))
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if err < 0
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if err != UV_EADDRINUSE && err != UV_EACCES && err != UV_EADDRNOTAVAIL
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#TODO: this codepath is not currently tested
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throw(UVError("bind", err))
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else
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return false
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end
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end
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sock.status = StatusOpen
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isa(sock, UDPSocket) && setopt(sock; kws...)
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return true
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end
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bind(sock::TCPServer, addr::InetAddr) = bind(sock, addr.host, addr.port)
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"""
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setopt(sock::UDPSocket; multicast_loop = nothing, multicast_ttl=nothing, enable_broadcast=nothing, ttl=nothing)
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Set UDP socket options.
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* `multicast_loop`: loopback for multicast packets (default: `true`).
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* `multicast_ttl`: TTL for multicast packets (default: `nothing`).
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* `enable_broadcast`: flag must be set to `true` if socket will be used for broadcast
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messages, or else the UDP system will return an access error (default: `false`).
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* `ttl`: Time-to-live of packets sent on the socket (default: `nothing`).
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"""
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function setopt(sock::UDPSocket; multicast_loop = nothing, multicast_ttl=nothing, enable_broadcast=nothing, ttl=nothing)
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if sock.status == StatusUninit
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error("Cannot set options on uninitialized socket")
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end
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if multicast_loop !== nothing
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uv_error("multicast_loop",ccall(:uv_udp_set_multicast_loop,Cint,(Ptr{Void},Cint),sock.handle,multicast_loop) < 0)
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end
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if multicast_ttl !== nothing
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uv_error("multicast_ttl",ccall(:uv_udp_set_multicast_ttl,Cint,(Ptr{Void},Cint),sock.handle,multicast_ttl))
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end
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if enable_broadcast !== nothing
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uv_error("enable_broadcast",ccall(:uv_udp_set_broadcast,Cint,(Ptr{Void},Cint),sock.handle,enable_broadcast))
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end
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if ttl !== nothing
|
|
uv_error("ttl",ccall(:uv_udp_set_ttl,Cint,(Ptr{Void},Cint),sock.handle,ttl))
|
|
end
|
|
end
|
|
|
|
"""
|
|
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)
|
|
return 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 && sock.status != StatusActive
|
|
error("UDPSocket is not initialized and open")
|
|
end
|
|
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
|
|
sock.status = StatusActive
|
|
return stream_wait(sock, sock.recvnotify)::Tuple{Union{IPv4, IPv6}, Vector{UInt8}}
|
|
end
|
|
|
|
alloc_buf_hook(sock::UDPSocket, size::UInt) = (Libc.malloc(size), size)
|
|
|
|
function uv_recvcb(handle::Ptr{Void}, nread::Cssize_t, buf::Ptr{Void}, addr::Ptr{Void}, flags::Cuint)
|
|
# C signature documented as (*uv_udp_recv_cb)(...)
|
|
sock = @handle_as handle UDPSocket
|
|
if nread < 0
|
|
Libc.free(buf_addr)
|
|
notify_error(sock.recvnotify, UVError("recv", nread))
|
|
elseif flags & UV_UDP_PARTIAL > 0
|
|
Libc.free(buf_addr)
|
|
notify_error(sock.recvnotify, "Partial message received")
|
|
else
|
|
buf_addr = ccall(:jl_uv_buf_base, Ptr{Void}, (Ptr{Void},), buf)
|
|
buf_size = ccall(:jl_uv_buf_len, Csize_t, (Ptr{Void},), buf)
|
|
# 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(nread), true)
|
|
notify(sock.recvnotify, (addrout, buf))
|
|
end
|
|
ccall(:uv_udp_recv_stop, Cint, (Ptr{Void},), sock.handle)
|
|
sock.status = StatusOpen
|
|
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 && sock.status != StatusActive
|
|
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
|
|
|
|
##
|
|
|
|
mutable struct 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
|
|
invokelatest(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
|
|
invokelatest(cb, IPv4(ntoh(ccall(:jl_sockaddr_host4, UInt32, (Ptr{Void},), sockaddr))))
|
|
break
|
|
#elseif ccall(:jl_sockaddr_is_ip6, Int32, (Ptr{Void},), sockaddr) == 1
|
|
# host = Vector{UInt128}(1)
|
|
# scope_id = ccall(:jl_sockaddr_host6, UInt32, (Ptr{Void}, Ptr{UInt128}), sockaddr, host)
|
|
# invokelatest(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)
|
|
r = r::UVError
|
|
code = r.code
|
|
if code in (UV_EAI_ADDRFAMILY, UV_EAI_AGAIN, UV_EAI_BADFLAGS,
|
|
UV_EAI_BADHINTS, UV_EAI_CANCELED, UV_EAI_FAIL,
|
|
UV_EAI_FAMILY, UV_EAI_NODATA, UV_EAI_NONAME,
|
|
UV_EAI_OVERFLOW, UV_EAI_PROTOCOL, UV_EAI_SERVICE,
|
|
UV_EAI_SOCKTYPE)
|
|
throw(DNSError(host, code))
|
|
elseif code == UV_EAI_MEMORY
|
|
throw(OutOfMemoryError())
|
|
else
|
|
throw(SystemError("uv_getaddrinfocb", -code))
|
|
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_ref = Ref{Ptr{UInt8}}(C_NULL)
|
|
count_ref = Ref{Int32}(1)
|
|
lo_present = false
|
|
err = ccall(:jl_uv_interface_addresses, Int32, (Ref{Ptr{UInt8}}, Ref{Int32}), addr_ref, count_ref)
|
|
uv_error("getlocalip", err)
|
|
addr, count = addr_ref[], count_ref[]
|
|
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 = Vector{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`](@ref)) 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
|
|
if default_port == 0
|
|
_addr, port = _sockname(sock, true)
|
|
return (port, sock)
|
|
end
|
|
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`).
|
|
"""
|
|
getsockname(sock::Union{TCPServer, TCPSocket}) = _sockname(sock, isa(sock, TCPServer))
|
|
|
|
function _sockname(sock, self)
|
|
rport = Ref{Cushort}(0)
|
|
raddress = zeros(UInt8, 16)
|
|
rfamily = Ref{Cuint}(0)
|
|
if self
|
|
r = ccall(:jl_tcp_getsockname, Int32,
|
|
(Ptr{Void}, Ref{Cushort}, Ptr{Void}, Ref{Cuint}),
|
|
sock.handle, rport, raddress, rfamily)
|
|
else
|
|
r = 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[])
|
|
af_inet6 = @static if is_windows() # AF_INET6 in <sys/socket.h>
|
|
23
|
|
elseif is_apple()
|
|
30
|
|
elseif Sys.KERNEL ∈ (:FreeBSD, :DragonFly)
|
|
28
|
|
elseif Sys.KERNEL ∈ (:NetBSD, :OpenBSD)
|
|
24
|
|
else
|
|
10
|
|
end
|
|
|
|
if rfamily[] == 2 # AF_INET
|
|
addrv4 = raddress[1:4]
|
|
naddr = ntoh(unsafe_load(Ptr{Cuint}(pointer(addrv4)), 1))
|
|
addr = IPv4(naddr)
|
|
elseif rfamily[] == 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
|