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Slide 24
Slide 24 text
def self.tcp(host, port, ...)
# ...
state = :start
loop do
case state
when :start then Start hostname resolution
when :v4w then Wait for 50ms for IPv6 name resolution
when :v6c, :v4c, :v46c then Start a new connection attempt
when :v46w then Wait for the connection state to be
confirmed and name resolution to complete
when :success then Return the successfully connected socket
when :failure then Raise an exception
when :timeout then Raise a timeout exception
end
end
end
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def self.tcp(host, port, ...)
# ...
state = :start
loop do
case state
when :start then Start hostname resolution
when :v4w then Wait for 50ms for IPv6 name resolution
when :v6c, :v4c, :v46c then Start a new connection attempt
when :v46w then Wait for the connection state to be
confirmed and name resolution to complete
when :success then Return the successfully connected socket
when :failure then Raise an exception
when :timeout then Raise a timeout exception
end
end
end
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Slide 26
Slide 26 text
def self.tcp(host, port, ...)
# ...
state = :start
loop do
case state
when :start then Start hostname resolution
when :v4w then Wait for 50ms for IPv6 name resolution
when :v6c, :v4c, :v46c then Start a new connection attempt
when :v46w then Wait for the connection state to be
confirmed and name resolution to complete
when :success then Return the successfully connected socket
when :failure then Raise an exception
when :timeout then Raise a timeout exception
end
end
end
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Slide 27
Slide 27 text
def self.tcp(host, port, ...)
# ...
state = :start
loop do
case state
when :start then Start hostname resolution
when :v4w then Wait for 50ms for IPv6 name resolution
when :v6c, :v4c, :v46c then Start a new connection attempt
when :v46w then Wait for the connection state to be
confirmed and name resolution to complete
when :success then Return the successfully connected socket
when :failure then Raise an exception
when :timeout then Raise a timeout exception
end
end
end
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Slide 28
Slide 28 text
5IFTUBUFUSBOTJUJPO
def self.tcp(host, port, ...)
# ...
state = :start
loop do
case state
when :start then Start hostname resolution
when :v4w then Wait for 50ms for IPv6 name resolution
when :v6c, :v4c, :v46c then Start a new connection attempt
when :v46w then Wait for the connection state to be
confirmed and name resolution to complete
when :success then Return the successfully connected socket
when :failure then Raise an exception
when :timeout then Raise a timeout exception
end
end
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Slide 29
Slide 29 text
5IFTUBUFTUBSU
def self.tcp(host, port, ...)
# ...
state = :start
loop do
case state
when :start then Start hostname resolution
when :v4w then Wait for 50ms for IPv6 name resolution
when :v6c, :v4c, :v46c then Start a new connection attempt
when :v46w then Wait for the connection state to be
confirmed and name resolution to complete
when :success then Return the successfully connected socket
when :failure then Raise an exception
when :timeout then Raise a timeout exception
end
end
end
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Slide 30
Slide 30 text
case state
when :start
# ...
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def initialize(size)
# ...
@rpipe, @wpipe = IO.pipe
@queue = Queue.new
@mutex = Mutex.new
end
5IFTUBUFTUBSU
Slide 31
Slide 31 text
case state
when :start
# ...
hostname_resolution_threads.concat(
resolving_family_names.map { |family|
thread_args = [family, *hostname_resolution_args]
thread = Thread.new(*thread_args) { |*thread_args|
hostname_resolution(*thread_args)
}
Thread.pass
thread
}
)
# ...
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hostname_resolution_queue =
HostnameResolutionQueue.new(resolving_family_names.size)
hostname_resolution_waiting = hostname_resolution_queue.waiting_pipe
hostname_resolution_args = [host, port, hostname_resolution_queue]
5IFTUBUFTUBSU
Slide 32
Slide 32 text
case state
when :start
# ...
hostname_resolution_threads.concat(
resolving_family_names.map { |family|
thread_args = [family, *hostname_resolution_args]
thread = Thread.new(*thread_args) { |*thread_args|
hostname_resolution(*thread_args)
}
Thread.pass
thread
}
)
# ...
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hostname_resolution_queue =
HostnameResolutionQueue.new(resolving_family_names.size)
hostname_resolution_waiting = hostname_resolution_queue.waiting_pipe
hostname_resolution_args = [host, port, hostname_resolution_queue]
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Slide 33
Slide 33 text
def self.hostname_resolution(family, host, port, hostname_resolution_queue)
begin
resolved_addrinfos =
Addrinfo.getaddrinfo(host, port, ADDRESS_FAMILIES[family], :STREAM)
hostname_resolution_queue.add_resolved(family, resolved_addrinfos)
rescue => e
# ...
end
end
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Slide 34
Slide 34 text
def self.hostname_resolution(family, host, port, hostname_resolution_queue)
begin
resolved_addrinfos =
Addrinfo.getaddrinfo(host, port, ADDRESS_FAMILIES[family], :STREAM)
hostname_resolution_queue.add_resolved(family, resolved_addrinfos)
rescue => e
# ...
end
end
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Slide 35
Slide 35 text
def self.hostname_resolution(family, host, port, hostname_resolution_queue)
begin
resolved_addrinfos =
Addrinfo.getaddrinfo(host, port, ADDRESS_FAMILIES[family], :STREAM)
hostname_resolution_queue.add_resolved(family, resolved_addrinfos)
rescue => e
# ...
end
end
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def add_resolved(family, resolved_addrinfos)
@mutex.synchronize do
@queue.push [family, resolved_addrinfos]
@wpipe.putc HOSTNAME_RESOLUTION_QUEUE_UPDATED
end
end
5IFTUBUFTUBSU
Slide 36
Slide 36 text
def self.hostname_resolution(family, host, port, hostname_resolution_queue)
begin
resolved_addrinfos =
Addrinfo.getaddrinfo(host, port, ADDRESS_FAMILIES[family], :STREAM)
hostname_resolution_queue.add_resolved(family, resolved_addrinfos)
rescue => e
# ...
end
end
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def add_resolved(family, resolved_addrinfos)
@mutex.synchronize do
@queue.push [family, resolved_addrinfos]
@wpipe.putc HOSTNAME_RESOLUTION_QUEUE_UPDATED
end
end
5IFTUBUFTUBSU
Slide 37
Slide 37 text
def self.hostname_resolution(family, host, port, hostname_resolution_queue)
begin
resolved_addrinfos =
Addrinfo.getaddrinfo(host, port, ADDRESS_FAMILIES[family], :STREAM)
hostname_resolution_queue.add_resolved(family, resolved_addrinfos)
rescue => e
# ...
end
end
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def add_resolved(family, resolved_addrinfos)
@mutex.synchronize do
@queue.push [family, resolved_addrinfos]
@wpipe.putc HOSTNAME_RESOLUTION_QUEUE_UPDATED
end
end
5IFTUBUFTUBSU
Slide 38
Slide 38 text
case state
when :start
# Create child threads and call Socket.hostname_resolution
hostname_resolved, _, =
IO.select(
# ...
(hostname_resolution_waiting, nil, nil, nil)
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Slide 39
Slide 39 text
case state
when :start
# Create child threads and call Socket.hostname_resolution
hostname_resolved, _, =
IO.select(
# ...
(hostname_resolution_waiting, nil, nil, nil)
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Slide 40
Slide 40 text
case state
when :start
# Create child threads and call Socket.hostname_resolution
hostname_resolved, _, =
IO.select(
# ...
(hostname_resolution_waiting, nil, nil, nil)
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Slide 41
Slide 41 text
case state
when :start
# Create child threads and call Socket.hostname_resolution
hostname_resolved, _, =
IO.select(
# ...
family_name, res = hostname_resolution_queue.get
# ... state = case family_name
when :ipv6 then :v6c
when :ipv4 then :v4w
end
selectable_addrinfos.add(family_name, res)
# ...
next
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Slide 42
Slide 42 text
case state
when :start
# Create child threads and call Socket.hostname_resolution
hostname_resolved, _, =
IO.select(
# ...
family_name, res = hostname_resolution_queue.get
# ...
state = case family_name
when :ipv6 then :v6c
when :ipv4 then :v4w
end
selectable_addrinfos.add(family_name, res)
# ...
next TUBSU*GUIFSFTPMWFEBEESFTTFTBSF*1W
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Slide 43
Slide 43 text
5IFTUBUFWX
def self.tcp(host, port, ...)
# ...
state = :start
loop do
case state
when :start then Start hostname resolution
when :v4w then Wait for 50ms for IPv6 name resolution
when :v6c, :v4c, :v46c then Start a new connection attempt
when :v46w then Wait for the connection state to be
confirmed and name resolution to complete
when :success then Return the successfully connected socket
when :failure then Raise an exception
when :timeout then Raise a timeout exception
end
end
end
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Slide 44
Slide 44 text
case state
when :v4w
ipv6_resolved, _, =
IO.select(
# ...
WX1BTTUIFSFBEFOEPGUIFQJQFUP*0TFMFDU
UPCMPDLUIFQSPDFTT
(hostname_resolution_waiting, nil, nil, RESOLUTION_DELAY)
8BJUGPSNTGPS*1WOBNFSFTPMVUJPO
5IFTUBUFWX
5IFSFBEFOEPGUIFQJQF
#MPDLQSPDFTTJOH
Slide 45
Slide 45 text
case state
when :v4w
ipv6_resolved, _, =
IO.select(
# ...
WX1BTTNTBT3FTPMVUJPO%FMBZUPUIFUJNFPVU
BSHVNFOU*0TFMFDUXJMMVOCMPDLFJUIFSXIFOUIF*1W
OBNFSFTPMVUJPODPNQMFUFTPSXIFOUIFNTUJNFPVU
FMBQTFT
(hostname_resolution_waiting, nil, nil, RESOLUTION_DELAY)
8BJUGPSNTGPS*1WOBNFSFTPMVUJPO
5IFTUBUFWX
#MPDLQSPDFTTJOH
NTGPS3FTPMVUJPO%FMBZ
5IFSFBEFOEPGUIFQJQF
Slide 46
Slide 46 text
case state
when :v4w
ipv6_resolved, _, =
IO.select(
if ipv6_resolved
family_name, res = hostname_resolution_queue.get
selectable_addrinfos.add(family_name, res) unless res.is_a? E
state = :v46c
else
state = :v4c
end
next
WX"GUFS*0TFMFDUVOCMPDLTBOEJG*1WJTSFTPMWFE
XJUIJONT
USBOTJUJPOUPWD
*GOPU
USBOTJUJPOUPWD
(hostname_resolution_waiting, nil, nil, RESOLUTION_DELAY)
Exception
(POFYU
%FUFSNJOFUIFOFYUTUBUF
5IFTUBUFWX
8BJUGPSNTGPS*1WOBNFSFTPMVUJPO
Slide 47
Slide 47 text
5IFTUBUFWDWDWD
def self.tcp(host, port, ...)
# ...
state = :start
loop do
case state
when :start then Start hostname resolution
when :v4w then Wait for 50ms for IPv6 name resolution
when :v6c, :v4c, :v46c then Start a new connection attempt
when :v46w then Wait for the connection state to be
confirmed and name resolution to complete
when :success then Return the successfully connected socket
when :failure then Raise an exception
when :timeout then Raise a timeout exception
end
end
end
WD
GBJMVSF TVDDFTT
TUBSU
WX
UJNFPVU
WX
WD
WD
WD
WD
BOEWDBSFUIFTUBUF
UPTUBSUBOFXDPOOFDUJPOBUUFNQU
Slide 48
Slide 48 text
case state
when :v6c, :v4c, v46c
# ...
addrinfo = selectable_addrinfos.get
# ...
socket = Socket.new(
# ...
result = socket.connect_nonblock(addrinfo, exception: false)
# ...
(addrinfo.pfamily, addrinfo.socktype, addrinfo.protocol)
WDWDWD3FUSJFWFPOFPGBWBJMBCMFBEESFTTFT
GPSUIFDPOOFDUJPOBOETUBSUBOPOCMPDLJOHDPOOFDUJPO
4UBSUBOFXDPOOFDUJPOBUUFNQU
3FUSJFWFBOBWBJMBCMFBEESFTT
4UBSUBDPOOFDUJPOBUUFNQU
5IFTUBUFWDWDWD
Slide 49
Slide 49 text
case state
when :v6c, :v4c, v46c
# ...
addrinfo = selectable_addrinfos.get
# ...
socket = Socket.new(
# ...
result = socket.connect_nonblock(addrinfo, exception: false)
# ...
connecting_sockets.add(socket, addrinfo)
state = :v46w
# ...
next
(addrinfo.pfamily, addrinfo.socktype, addrinfo.protocol)
WDWDWD5IFOTUPSFUIFTPDLFUVTFEGPS
UIFDPOOFDUJPOBUUFNQU
BOEUSBOTJUJPOUPWX
(POFYU
4FUUIFOFYUTUBUF
4UPSFUIFTPDLFU
4UBSUBOFXDPOOFDUJPOBUUFNQU
5IFTUBUFWDWDWD
Slide 50
Slide 50 text
def self.tcp(host, port, ...)
# ...
state = :start
loop do
case state
when :start then Start hostname resolution
when :v4w then Wait for 50ms for IPv6 name resolution
when :v6c, :v4c, :v46c then Start a new connection attempt
when :v46w then Wait for the connection state to be
confirmed and name resolution to complete
when :success then Return the successfully connected socket
when :failure then Raise an exception
when :timeout then Raise a timeout exception
end
end
end
WD
GBJMVSF TVDDFTT
TUBSU
WX
UJNFPVU
WX
WD
WD
*OWX
UIFQSPDFTTXBJUTGPSUIFDPOOFDUJPOUPCF
FTUBCMJTIFE0S
JGUIFPUIFSBEESFTTGBNJMZJTTUJMMSFTPMWJOH
BUUIJTQPJOU
JUBMTPXBJUTGPSUIBUSFTPMVUJPOUPDPNQMFUF
5IFTUBUFWX
Slide 51
Slide 51 text
case state
when :v46w
# ...
hostname_resolved, connectable_sockets, =
IO.select(
# ...
(hostname_resolution_waiting, connecting_sockets.all, nil, remaining)
WX5IFQSPDFTTJOHJTCMPDLFEXJUI*0TFMFDUBHBJO
5IJT*0TFMFDUNPOJUPSTCPUIUIFSFBEFOEPGUIFQJQF
BOEBMMUIFTPDLFUTDVSSFOUMZBUUFNQUJOHUPDPOOFDU
8BJUGPSUIFDPOOFDUJPOTUBUFUPCFDPO
fi
SNFEBOEOBNFSFTPMVUJPOUPDPNQMFUF
5IFTUBUFWX
5IFTPDLFUTBUUFNQUJOHUPDPOOFDU
5IFSFBEFOEPGUIFQJQF
#MPDLQSPDFTTJOH
Slide 52
Slide 52 text
case state
when :v46w
# ...
hostname_resolved, connectable_sockets, =
IO.select(
# ...
(hostname_resolution_waiting, connecting_sockets.all, nil, remaining)
8BJUGPSUIFDPOOFDUJPOTUBUFUPCFDPO
fi
SNFEBOEOBNFSFTPMVUJPOUPDPNQMFUF
#MPDLQSPDFTTJOH
WX5IFUJNFPVUBSHVNFOUJTTFUUPNT
5IJTSFQSFTFOUT$POOFDUJPO"UUFNQU%FMBZ
UIFXBJUJOHUJNFCFUXFFOTUBSUJOHUIFQSFWJPVT
DPOOFDUJPOBUUFNQUBOETUBSUJOHUIFOFYUPOF
NTGPS$POOFDUJPO"UUFNQU%FMBZ
5IFTPDLFUTBUUFNQUJOHUPDPOOFDU
5IFSFBEFOEPGUIFQJQF
5IFTUBUFWX
Slide 53
Slide 53 text
5IFTUBUFWX
case state
when :v46w
# ...
hostname_resolved, connectable_sockets, =
IO.select(
# ...
(hostname_resolution_waiting, connecting_sockets.all, nil, remaining)
8BJUGPSUIFDPOOFDUJPOTUBUFUPCFDPO
fi
SNFEBOEOBNFSFTPMVUJPOUPDPNQMFUF
#MPDLQSPDFTTJOH
NTGPS$POOFDUJPO"UUFNQU%FMBZ
5IFTPDLFUTBUUFNQUJOHUPDPOOFDU
5IFSFBEFOEPGUIFQJQF
WX*0TFMFDUVOCMPDLTXIFOFJUIFSBOBNFSFTPMVUJPO
DPNQMFUJPOOPUJ
fi
DBUJPOBSSJWFTPOUIFSFBEFOEPGUIFQJQF
BOZPGUIFTPDLFUTDVSSFOUMZBUUFNQUJOHUPDPOOFDUCFDPNF
XSJUBCMF
PSUIFNTUJNFPVUFMBQTFT
Slide 54
Slide 54 text
case state
when :v46w
# ...
hostname_resolved, connectable_sockets, =
IO.select(
# ...
if connectable_sockets&.any?
# ...
elsif hostname_resolved&.any?
# ...
else
# ...
end
# ...
next
(hostname_resolution_waiting, connecting_sockets.all, nil, remaining)
WX0ODF*0TFMFDUVOCMPDLT
UIFOFYUTUBUFJT
EFUFSNJOFECBTFEPOUIFSFBTPOJUXBTVOCMPDLFE
(POFYU
%FUFSNJOFUIFOFYUTUBUF
5IFJNQMFNFOUBUJPOPG4PDLFUUDQ WX
8BJUGPSUIFDPOOFDUJPOTUBUFUPCFDPO
fi
SNFEBOEOBNFSFTPMVUJPOUPDPNQMFUF
*GUIF$POOFDUJPO"UUFNQU%FMBZUJNFTPVU
Slide 55
Slide 55 text
5IFJNQMFNFOUBUJPOPG4PDLFUUDQ
def self.tcp(host, port, ...)
# ...
state = :start
loop do
case state
when :start then Start hostname resolution
when :v4w then Wait for 50ms for IPv6 name resolution
when :v6c, :v4c, :v46c then Start a new connection attempt
when :v46w then Wait for the connection state to be
confirmed and name resolution to complete
when :success then Return the successfully connected socket
when :failure then Raise an exception
when :timeout then Raise a timeout exception
end
end
end
WD
GBJMVSF TVDDFTT
TUBSU
WX
UJNFPVU
WX
WD
WD
&WFOUVBMMZ
POFPGUIFUFSNJOBMTUBUFT TVDDFTT
GBJMVSF
PSUJNFPVU
JTSFBDIFE5IFO4PDLFUUDQ
fi
OJTIFTCZ
FJUIFSSFUVSOJOHUIFDPOOFDUFETPDLFUPSSBJTJOH
BOFYDFQUJPO
EFQFOEJOHPOUIFTJUVBUJPO
Slide 56
Slide 56 text
def self.tcp(host, port, ...)
# ...
state = :start
loop do
case state
when :start then Start hostname resolution
when :v4w then Wait for 50ms for IPv6 name resolution
when :v6c, :v4c, :v46c then Start a new connection attempt
when :v46w then Wait for the connection state to be
confirmed and name resolution to complete
when :success then Return the successfully connected socket
when :failure then Raise an exception
when :timeout then Raise a timeout exception
end
end
end
WD
GBJMVSF TVDDFTT
TUBSU
WX
UJNFPVU
WX
WD
WD
5IFJNQMFNFOUBUJPOPG4PDLFUUDQXJUI)&W
JTOPXDPNQMFUF
5IFJNQMFNFOUBUJPOPG4PDLFUUDQ
Slide 57
Slide 57 text
5IJTDIBOHFXBTNFSHFEJOUP3VCZNBTUFSPO'FC
5IJTJTUIFTUPSZ*JOUSPEVDFEBU3VCZ,BJHJMBTUZFBS
.FSHFE IUUQTHJUIVCDPNSVCZSVCZQVMM
5IJTXSBQTVQPVSSFWJFXPG"O"EWFOUVSFPG)BQQZ&ZFCBMMT
Slide 58
Slide 58 text
.BLJOH5$14PDLFUOFX)BQQZ
/PX
MFUTJOUSPEVDF)BQQZ&ZFCBMMT7FSTJPO
JOUP5$14PDLFUOFX JNQMFNFOUFEJO$
VTJOHUIF4PDLFUUDQJNQMFNFOUBUJPOBTBSFGFSFODF
Slide 59
Slide 59 text
)PXFWFS
Slide 60
Slide 60 text
.BZ
Slide 61
Slide 61 text
"DPODFSOSBJTFECZ!BLS
.BZ
Slide 62
Slide 62 text
"DPODFSOSBJTFECZ!BLS
5IFJNQMFNFOUBUJPOMPPLT
FYDFTTJWFMZMJLFBTUBUFUSBOTJUJPO
!BLS
Slide 63
Slide 63 text
"OFYBNQMFTPGUIFFYDFTTJWFMZBTUBUFUSBOTJUJPOMJLFJNQM
case state
when :start
# ...
hostname_resolved, _, =
IO.select(
# ...
family_name, res = hostname_resolution_queue.get
# ...
state = case family_name
when :ipv6 then :v6c
when :ipv4 then :v4w
end
selectable_addrinfos.add(family_name, res)
# ...
next
(hostname_resolution_waiting, nil, nil, remaining)
-FUTSFWJFXTUBSUBHBJO
GPDVTJOHPOXIBUIBQQFOT
BGUFS*0TFMFDUVOCMPDLTUIBUJT
BGUFSFJUIFSUIF*1W
PS*1WSFTPMVUJPODPNQMFUFT
4UBSUIPTUOBNFSFTPMVUJPO
Slide 64
Slide 64 text
case state
when :start
# ...
hostname_resolved, _, =
IO.select(
# ...
family_name, res = hostname_resolution_queue.get
# ...
state = case family_name
when :ipv6 then :v6c
when :ipv4 then :v4w
end
selectable_addrinfos.add(family_name, res)
# ...
next
(hostname_resolution_waiting, nil, nil, remaining)
5IFOFYUTUBUFJTEFUFSNJOFECBTFEPOXIFUIFS
UIFBEESFTTSFUSJFWFGSPNUIFRVFVFJT*1WPS*1W
4UBSUIPTUOBNFSFTPMVUJPO
(FUUIFSFTVMU
"OFYBNQMFTPGUIFFYDFTTJWFMZBTUBUFUSBOTJUJPOMJLFJNQM
%FUFSNJOFUIFOFYUTUBUF
Slide 65
Slide 65 text
case state
when :start
# ...
hostname_resolved, _, =
IO.select(
# ...
family_name, res = hostname_resolution_queue.get
# ...
state = case family_name
when :ipv6 then :v6c
when :ipv4 then :v4w
end
selectable_addrinfos.add(family_name, res)
# ...
next
(hostname_resolution_waiting, nil, nil, remaining)
8IBUIBQQFOTJGCPUI*1WBOE*1WIBWF
BMSFBEZDPNQMFUFEOBNFSFTPMVUJPOBUUIJTQPJOU
4UBSUIPTUOBNFSFTPMVUJPO
"OFYBNQMFTPGUIFFYDFTTJWFMZBTUBUFUSBOTJUJPOMJLFJNQM
Slide 66
Slide 66 text
case state
when :start
# ...
hostname_resolved, _, =
IO.select(
# ...
family_name, res = hostname_resolution_queue.get
# ...
state = case family_name
when :ipv6 then :v6c
when :ipv4 then :v4w
end
selectable_addrinfos.add(family_name, res)
# ...
next
4UBSUIPTUOBNFSFTPMVUJPO
*1W
*OUIJTDBTF
UIFRVFVFIBT
CPUI*1WBOE*1WBEESFTTFT
(hostname_resolution_waiting, nil, nil, remaining)
"OFYBNQMFTPGUIFFYDFTTJWFMZBTUBUFUSBOTJUJPOMJLFJNQM
*1W
5IFRVFVF
Slide 67
Slide 67 text
case state
when :start
# ...
hostname_resolved, _, =
IO.select(
# ...
family_name, res = hostname_resolution_queue.get
# ...
state = case family_name
when :ipv6 then :v6c
when :ipv4 then :v4w
end
selectable_addrinfos.add(family_name, res)
# ...
next
4UBSUIPTUOBNFSFTPMVUJPO
'PSFYBNQMF
JGUIF*1WBEESFTTFTBSFSFUSJFWFEGSPNUIFRVFVF
(hostname_resolution_waiting, nil, nil, remaining)
"OFYBNQMFTPGUIFFYDFTTJWFMZBTUBUFUSBOTJUJPOMJLFJNQM
*1W
*1W
5IFRVFVF
3FUSJFWF*1WBEESFTTPOMZ
Slide 68
Slide 68 text
case state
when :start
# ...
hostname_resolved, _, =
IO.select(
# ...
family_name, res = hostname_resolution_queue.get
# ...
state = case family_name
when :ipv6 then :v6c
when :ipv4 then :v4w
end
selectable_addrinfos.add(family_name, res)
# ...
next
4UBSUIPTUOBNFSFTPMVUJPO
%FUFSNJOFUIBU*1WXBTSFTPMWFE
fi
STU
BOEUIFQSPDFTTUSBOTJUJPOTUPWX
UPXBJUGPS*1WOBNFSFTPMVUJPO
(hostname_resolution_waiting, nil, nil, remaining)
%FUFSNJOFUIFOFYUTUBUFBTWX
"OFYBNQMFTPGUIFFYDFTTJWFMZBTUBUFUSBOTJUJPOMJLFJNQM
3FUSJFWF*1WBEESFTTPOMZ
Slide 69
Slide 69 text
case state
when :v4w
ipv6_resolved, _, =
IO.select(
if ipv6_resolved
family_name, res = hostname_resolution_queue.get
# ...
state = :v46c
else
state = :v4c
end
next
*OWX
*0TFMFDUJTDBMMFEUPXBJUGPS*1WOBNF
SFTPMVUJPO
FWFOUIPVHI*1WIBTBMSFBEZCFFOSFTPMWFE
"OVOOFDFTTBSZ*0TFMFDUDBMMJTPDDVSSJOH
&WFOUIPVHI*1WIBTBMSFBEZCFFOJOUIFRVFVF
(hostname_resolution_waiting, nil, nil, RESOLUTION_DELAY)
"OFYBNQMFTPGUIFFYDFTTJWFMZBTUBUFUSBOTJUJPOMJLFJNQM
8BJUGPSNTGPS*1WOBNFSFTPMVUJPO
*1W
3FUSJFWF*1WBEESFTT
5IFRVFVF
Slide 70
Slide 70 text
8IBU`TUIFQSPCMFN
1SFNJTF
ɾ5IFDVSSFOUTUBUFJTNBOBHFEEVSJOHFYFDVUJPO
ɾ&BDITUBUFIBTQSFEF
fi
OFEBDUJPOTBOE
ɹDPOEJUJPOTGPSUSBOTJUJPOJOHUPUIFOFYUTUBUF
Slide 71
Slide 71 text
8IBU`TUIFQSPCMFN
&WFOJGDPOEJUJPO"GPSUSBOTJUJPOJOHUPTUBUF"BOE
DPOEJUJPO#GPSUSBOTJUJPOJOHUPTUBUF#BSFVOJOUFOUJPOBMMZTBUJT
fi
FE
BUUIFTBNFUJNF
#
"
TUBSU
TBUJT
fi
FE
TBUJT
fi
FE
Slide 72
Slide 72 text
8IBU`TUIFQSPCMFN
&WFOJGDPOEJUJPO"GPSUSBOTJUJPOJOHUPTUBUF"BOE
DPOEJUJPO#GPSUSBOTJUJPOJOHUPTUBUF#BSFVOJOUFOUJPOBMMZTBUJT
fi
FE
BUUIFTBNFUJNF
POMZPOFPGUIFUXPFJUIFSTUBUF"PSTUBUF#XJMMCFTFMFDUFE
BTUIFOFYUTUBUF
"
TUBSU
TBUJT
fi
FEBOETFMFDUFE
TBUJT
fi
FEBOEOPUTFMFDUFE
#
Slide 73
Slide 73 text
8IBU`TUIFQSPCMFN
"TBSFTVMU
UIFSFJTBSJTLUIBUQSPDFTTJOHXIJDITIPVMEOPUIBWFCFFO
QFSGPSNFEXJMMCFFYFDVUFEJOUIFTFMFDUFETUBUF
BOEQSPDFTTJOHXIJDITIPVMEIBWFCFFOQFSGPSNFEXJMMCFTLJQQFEJO
UIFVOTFMFDUFETUBUF
"
TUBSU
TBUJT
fi
FEBOETFMFDUFE
&YFDVUFXIBUTIPVMEOPUEP
$BOUFYFDVUFXIBUTIPVMEEP
TBUJT
fi
FEBOEOPUTFMFDUFE
#
Slide 74
Slide 74 text
5IJTJTTVFDBOCFBWPJEFECZJOUSPEVDJOHBOFXTUBUF$UIBU
SFQSFTFOUTUIFDBTFXIFSFCPUIDPOEJUJPO"BOE#BSFTBUJT
fi
FE
5IBUJT
JGXFBSFXJMMJOHUPBDDFQUUIFJODSFBTFEDPNQMFYJUZJOCPUI
UIFTQFDJ
fi
DBUJPOBOEUIFJNQMFNFOUBUJPOUIBUDPNFTXJUI
NBOBHJOHNPSFTUBUFT
8IBU`TUIFQSPCMFN
"
TUBSU
$
#
TBUJT
fi
FEBOETFMFDUFE
Slide 75
Slide 75 text
5IJTJTTVFDBOCFBWPJEFECZJOUSPEVDJOHBOFXTUBUF$UIBU
SFQSFTFOUTUIFDBTFXIFSFCPUIDPOEJUJPO"BOE#BSFTBUJT
fi
FE
5IBUJT
JGXFBSFXJMMJOHUPBDDFQUUIFJODSFBTFEDPNQMFYJUZJOCPUI
UIFTQFDJ
fi
DBUJPOBOEUIFJNQMFNFOUBUJPOUIBUDPNFTXJUI
NBOBHJOHNPSFTUBUFT
8IBU`TUIFQSPCMFN
"
TUBSU
$
#
"the excessively a state-transition-like impl"
Slide 76
Slide 76 text
#FGPSFXPSLJOHPO5$14PDLFUOFX
-FUTSFJNQMFNFOU4PDLFUUDQ
Slide 77
Slide 77 text
$PODFQUPGUIFUIFJNQSPWFEWFSTJPOPG4PDLFUUDQ
ɾ&MJNJOBUFDVSSFOUTUBUFNBOBHFNFOU
ɾ&YFDVUFBMMQSPDFTTJOHUIBUDBOCFQFSGPSNFE
ɹBUUIBUNPNFOU
JOTUFBEPGFYFDVUJOHPOMZUIFQSPDFTTJOH
ɹQSFEF
fi
OFEGPSFBDITUBUF
5IFJNQSPWFEWFSTJPOPG4PDLFUUDQ
Slide 78
Slide 78 text
5IFPWFSWJFXPGUIFJNQSPWFEWFSTJPOPG4PDLFUUDQ
def self.tcp(host, port, ...)
loop do
if then
timeout =
IO.select(, , nil, )
if then
if then
if then
end
end
-FUTSFWJFXUIFDIBOHFT
Slide 79
Slide 79 text
def self.tcp(host, port, ...)
loop do
# Processes in this loop
end
end
5IFPWFSWJFXPGUIFJNQSPWFEWFSTJPOPG4PDLFUUDQ
'JSTU
UIFJOJUJBMJ[BUJPOPGWBSJBCMFTGPSNBOBHJOH
UJNFPVUT
TVDIBT3FTPMVUJPO%FMBZBOE
$POOFDUJPO"UUFNQU%FMBZ
BSFOFXMZBEEFE
"EEFE
Slide 80
Slide 80 text
*OJUJBMJ[BUJPOPGUIFUJNFPVUWBSJBCMFT
def self.tcp(host, port, ...)
# Other initialization processes
resolution_delay_expires_at = nil
connection_attempt_delay_expires_at = nil
loop do
# Processes in this loop
end
end
SFTPMVUJPO@EFMBZ@FYQJSFT@BUJTBWBSJBCMFUIBUTUPSFT
UIFEFBEMJOFGPSXBJUJOHPO*1WOBNFSFTPMVUJPO
BTQBSUPGUIF3FTPMVUJPO%FMBZ
*OJUJBMJ[BUJPOPGUIFUJNFPVUWBSJBCMFT
Slide 81
Slide 81 text
*OJUJBMJ[BUJPOPGUIFUJNFPVUWBSJBCMFT
def self.tcp(host, port, ...)
# Other initialization processes
resolution_delay_expires_at = nil
connection_attempt_delay_expires_at = nil
loop do
# Processes in this loop
end
end
DPOOFDUJPO@BUUFNQU@EFMBZ@FYQJSFT@BUJTBWBSJBCMF
UIBUTUPSFTUIFUJNFBUXIJDIUIFOFYUDPOOFDUJPO
BUUFNQUDBOCFHJOBGUFSUIFQSFWJPVTPOFIBTTUBSUFE
BTQBSUPG$POOFDUJPO"UUFNQU%FMBZ
*OJUJBMJ[BUJPOPGUIFUJNFPVUWBSJBCMFT
Slide 82
Slide 82 text
*OJUJBMJ[BUJPOPGUIFUJNFPVUWBSJBCMFT
def self.tcp(host, port, ...)
# Other initialization processes
resolution_delay_expires_at = nil
connection_attempt_delay_expires_at = nil
loop do
# Processes in this loop
end
end
5IFTFWBSJBCMFTBSFJOJUJBMMZTFUUPOJM
5IFWBMVFTXJMMCFTFUMBUFS
XIFOXBJUJOHCFDPNFT
OFDFTTBSZ
*OJUJBMJ[FXJUIOJM
Slide 83
Slide 83 text
def self.tcp(host, port, ...)
# Other initialization processes
resolution_delay_expires_at = nil
connection_attempt_delay_expires_at = nil
loop do
# Processes in this loop
end
end
4UBSUIPTUOBNFSFTPMVUJPOJODIJMEUISFBET
/FYU
UIFNFUIPEGPSOBNFSFTPMVUJPOJTDBMMFE
5IFJNQMFNFOUBUJPOBOEJOWPDBUJPOPGUIJTNFUIPEBSF
NPTUMZUIFTBNFBTQSFWJPVTJNQMFNFOUBUJPO
&YFDVUFUIFOBNFSFTPMVUJPONFUIPE
Slide 84
Slide 84 text
def self.tcp(host, port, ...)
# Other initialization processes
resolution_delay_expires_at = nil
connection_attempt_delay_expires_at = nil
loop do
# Processes in this loop
end
end
4UBSUBMPPQ
4UBSUBMPPQ
Slide 85
Slide 85 text
loop do
if then
timeout =
IO.select(, , nil, )
if then
if then
if then
end
5IFPWFSWJFXPGUIFQSPDFTTFTJOUIJTMPPQ
5IFDBTFTUBUFNFOUJOUIFQSFWJPVTJNQMFNFOUBUJPO
XIJDIEJSFDUFEQSPDFTTJOHCBTFEPOUIFDVSSFOUTUBUF
IBTCFFOSFQMBDFEXJUIJGTUBUFNFOUTJOTJEFUIFMPPQ
3FQMBDFDBTFXJUIJGT
Slide 86
Slide 86 text
loop do
if then
timeout =
IO.select(, , nil, )
if then
if then
if then
end
5IFPWFSWJFXPGUIFQSPDFTTFTJOUIJTMPPQ
0OFBDIMPPQJUFSBUJPO
DPOEJUJPOTBSFDIFDLFEBOE
UIFOFDFTTBSZQSPDFTTJOHJTQFSGPSNFE
3FQMBDFDBTFXJUIJGT
Slide 87
Slide 87 text
loop do
if then
timeout =
IO.select(, , nil, )
if then
if then
if then
end
5IF
fi
STUDPOEJUJPO
5IF
fi
STUDPOEJUJPODIFDLT
XIFUIFSBOFXDPOOFDUJPOBUUFNQUDBOCFTUBSUFE
5IFSFRVJSFNFOUTGPSTUBSUJOHBOBUUFNQUBSF
Slide 88
Slide 88 text
if resolution_store.any_addrinfos? &&
!resolution_delay_expires_at &&
!connection_attempt_delay_expires_at
# ...
end
5IFDPOEJUJPOUPTUBSUBDPOOFDUJPO
5IFDPOEJUJPOUPTUBSUBDPOOFDUJPO
Slide 89
Slide 89 text
if resolution_store.any_addrinfos? &&
!resolution_delay_expires_at &&
!connection_attempt_delay_expires_at
# ...
end
5IFDPOEJUJPOUPTUBSUBDPOOFDUJPO
"UMFBTUPOFBEESFTTGBNJMZIBTDPNQMFUFEOBNF
SFTPMVUJPO
BOEUIFSFBSFBWBJMBCMFDBOEJEBUF
BEESFTTFTUPDPOOFDUUP
5IFDPOEJUJPOUPTUBSUBDPOOFDUJPO
Slide 90
Slide 90 text
if resolution_store.any_addrinfos? &&
!resolution_delay_expires_at &&
!connection_attempt_delay_expires_at
# ...
end
SFTPMVUJPO@EFMBZ@FYQJSFT@BUJTOJM
NFBOJOHJUJTOPUEVSJOH3FTPMVUJPO%FMBZ
5IFDPOEJUJPOUPTUBSUBDPOOFDUJPO
5IFDPOEJUJPOUPTUBSUBDPOOFDUJPO
Slide 91
Slide 91 text
if resolution_store.any_addrinfos? &&
!resolution_delay_expires_at &&
!connection_attempt_delay_expires_at
# ...
end
DPOOFDUJPO@BUUFNQU@EFMBZ@FYQJSFT@BUJTOJM
NFBOJOHJUJTOPUEVSJOH$POOFDUJPO"UUFNQU%FMBZ
5IFDPOEJUJPOUPTUBSUBDPOOFDUJPO
5IFDPOEJUJPOUPTUBSUBDPOOFDUJPO
Slide 92
Slide 92 text
if resolution_store.any_addrinfos? &&
!resolution_delay_expires_at &&
!connection_attempt_delay_expires_at
while (addrinfo = resolution_store.get_addrinfo)
# ...
socket = Socket.new(addrinfo.pfamily, addrinfo.socktype, addrinfo.protocol)
socket.bind(local_addrinfo) if local_addrinfo
result = socket.connect_nonblock(addrinfo, exception: false)
if result == :wait_writable
# ...
# ...
connecting_sockets[socket] = addrinfo
# ...
end
end
end
*GBMMUIFTFDPOEJUJPOTBSFNFU
POFEFTUJOBUJPOBEESFTTJT3FUSJFWF
BOETUBSUBDPOOFDUJPOBUUFNQUJOOPOCMPDLJOHNPEF
3FUSJFWFBOBEESFTT
4UBSUBOPOCMPDLJOHDPOOFDU
5IFDPOEJUJPOUPTUBSUBDPOOFDUJPO
Slide 93
Slide 93 text
if resolution_store.any_addrinfos? &&
!resolution_delay_expires_at &&
!connection_attempt_delay_expires_at
while (addrinfo = resolution_store.get_addrinfo)
# ...
socket = Socket.new(addrinfo.pfamily, addrinfo.socktype, addrinfo.protocol)
socket.bind(local_addrinfo) if local_addrinfo
result = socket.connect_nonblock(addrinfo, exception: false)
if result == :wait_writable
connection_attempt_delay_expires_at = now + CONNECTION_ATTEMPT_DELAY
# ...
end
end
end
DPOOFDUJPO@BUUFNQU@EFMBZ@FYQJSFT@BUJTTFUUP
UIFDVSSFOUUJNF NT5IJTSFQSFTFOUTUIFUJNFBU
XIJDIUIFOFYUDPOOFDUJPOBUUFNQUDBOCFHJO
5IFDVSSFOUUJNF NT
5IFDPOEJUJPOUPTUBSUBDPOOFDUJPO
Slide 94
Slide 94 text
if resolution_store.any_addrinfos? &&
!resolution_delay_expires_at &&
!connection_attempt_delay_expires_at
while (addrinfo = resolution_store.get_addrinfo)
# ...
socket = Socket.new(addrinfo.pfamily, addrinfo.socktype, addrinfo.protocol)
socket.bind(local_addrinfo) if local_addrinfo
result = socket.connect_nonblock(addrinfo, exception: false)
if result == :wait_writable
connection_attempt_delay_expires_at = now + CONNECTION_ATTEMPT_DELAY
# ...
connecting_sockets[socket] = addrinfo
# ...
end
end
end
5IFOTUPSFUIFTPDLFUVTFEGPSUIFDPOOFDUJPOBUUFNQU
FYJUUIJTJGTUBUFNFOU
4UPSFUIFTPDLFU
5IFDPOEJUJPOUPTUBSUBDPOOFDUJPO
Slide 95
Slide 95 text
loop do
if then
timeout =
IO.select(, , nil, )
if then
if then
if then
end
"GUFSUIF
fi
STUDPOEJUJPO
5IFOFYUTUFQJTUPDBMM*0TFMFDU
Slide 96
Slide 96 text
loop do
if then
timeout =
IO.select(, , nil, )
if then
if then
if then
end
$BMM*0TFMFDUUPXBJU
*OUIFQSFWJPVTJNQMFNFOUBUJPO
*0TFMFDUXBTDBMMFEJO
UISFFEJ
ff
FSFOUTUBUFTTUBSU
WX
BOEWXUPXBJU
GPSFJUIFSBDPOOFDUJPOPSOBNFSFTPMVUJPOUPDPNQMFUF
Slide 97
Slide 97 text
loop do
if then
timeout =
IO.select(, , nil, )
if then
if then
if then
end
$BMM*0TFMFDUUPXBJU
*OUIFOFXJNQMFNFOUBUJPO
JUJTDPOTPMJEBUFEJOUP
BTJOHMFMPDBUJPO
XIFSFJUXBJUTGPSFJUIFSBDPOOFDUJPO
PSOBNFSFTPMVUJPOUPDPNQMFUF
Slide 98
Slide 98 text
loop do
if then
timeout =
IO.select(, , nil, )
if then
if then
if then
end
5PTVQQPSUUIJT
MPHJDIBTCFFOBEEFEUPDBMDVMBUF
UIFBQQSPQSJBUFUJNFPVUWBMVFUPQBTTUP*0TFMFDU
CBTFEPOUIFDVSSFOUTJUVBUJPO
$BMM*0TFMFDUUPXBJU
Slide 99
Slide 99 text
$BMDVMBUFUIFUJNFPVUWBMVF
ends_at =
if resolution_store.any_addrinfos?
resolution_delay_expires_at || connection_attempt_delay_expires_at
else
[user_specified_resolv_timeout_at, user_specified_connect_timeout_at].compact.max
end
)FSFJUJT
Slide 100
Slide 100 text
ends_at =
if resolution_store.any_addrinfos?
resolution_delay_expires_at || connection_attempt_delay_expires_at
else
[user_specified_resolv_timeout_at, user_specified_connect_timeout_at].compact.max
end
*GUIFSFBSFDBOEJEBUFBEESFTTFTBWBJMBCMFBUUIJTQPJOU
$BMDVMBUFUIFUJNFPVUWBMVF
Slide 101
Slide 101 text
ends_at =
if resolution_store.any_addrinfos?
resolution_delay_expires_at || connection_attempt_delay_expires_at
else
[user_specified_resolv_timeout_at, user_specified_connect_timeout_at].compact.max
end
BOE3FTPMVUJPO%FMBZJTJOQSPHSFTT
SFTPMVUJPO@EFMBZ@FYQJSFT@BUXJMMIBWFBWBMVF
BOEUIBUWBMVFJTSFUVSOFE
$BMDVMBUFUIFUJNFPVUWBMVF
Slide 102
Slide 102 text
$BMDVMBUFUIFUJNFPVUWBMVF
ends_at =
if resolution_store.any_addrinfos?
resolution_delay_expires_at || connection_attempt_delay_expires_at
else
[user_specified_resolv_timeout_at, user_specified_connect_timeout_at].compact.max
end
*G3FTPMVUJPO%FMBZJTOPUJOQSPHSFTT
UIFWBMVFTFU
DPOOFDUJPO@BUUFNQU@EFMBZ@FYQJSFT@BUJTSFUVSOFE
JOTUFBE
Slide 103
Slide 103 text
$BMDVMBUFUIFUJNFPVUWBMVF
ends_at =
if resolution_store.any_addrinfos?
resolution_delay_expires_at || connection_attempt_delay_expires_at
else
[user_specified_resolv_timeout_at, user_specified_connect_timeout_at].compact.max
end
*GUIFSFBSFOPBWBJMBCMFDBOEJEBUFBEESFTTFT
5IJTNFBOTFJUIFSOPOBNFSFTPMVUJPOIBTCFFO
DPNQMFUFEZFU
PSDPOOFDUJPOBUUFNQUTIBWFBMSFBEZ
CFFOTUBSUFEGPSBMMSFTPMWFEBEESFTTFTBUUIJTQPJOU
Slide 104
Slide 104 text
$BMDVMBUFUIFUJNFPVUWBMVF
ends_at =
if resolution_store.any_addrinfos?
resolution_delay_expires_at || connection_attempt_delay_expires_at
else
[user_specified_resolv_timeout_at, user_specified_connect_timeout_at].compact.max
end
*OUIJTDBTF
JGTPNFVTFSTQFDJ
fi
FEUJNFPVUWBMVFT
BSFQSPWJEFEBTBOBSHVNFOUUP4PDLFUUDQ
UIFMBSHFSWBMVFJTVTFE
Slide 105
Slide 105 text
ends_at =
if resolution_store.any_addrinfos?
resolution_delay_expires_at || connection_attempt_delay_expires_at
else
[user_specified_resolv_timeout_at, user_specified_connect_timeout_at].compact.max
end
*GOPVTFSTQFDJ
fi
FEUJNFPVUJTHJWFO
BXPSLBSPVOEJTBQQMJFEUPSFUVSOBWBMVFUIBU
F
ff
FDUJWFMZXBJUTJOEF
fi
OJUFMZ EFUBJMTPNJUUFEIFSF
$BMDVMBUFUIFUJNFPVUWBMVF
Slide 106
Slide 106 text
ends_at =
if resolution_store.any_addrinfos?
resolution_delay_expires_at || connection_attempt_delay_expires_at
else
[user_specified_resolv_timeout_at, user_specified_connect_timeout_at].compact.max
end
hostname_resolved, writable_sockets, except_sockets = IO.select(
hostname_resolution_notifier,
connecting_sockets.keys,
is_windows_environment ? connecting_sockets.keys : nil,
second_to_timeout(current_clock_time, ends_at),
)
$BMM*0TFMFDUXJUIUIFUJNFPVUWBMVFDBMDVMBUFEGSPN
UIFSFUVSOWBMVFPGUIJTMPHJD
$BMM*0TFMFDUXJUIUIFUJNFPVUWBMVF
"DUVBMUJNFPVUWBMVF
Slide 107
Slide 107 text
ends_at =
if resolution_store.any_addrinfos?
resolution_delay_expires_at || connection_attempt_delay_expires_at
else
[user_specified_resolv_timeout_at, user_specified_connect_timeout_at].compact.max
end
hostname_resolved, writable_sockets, except_sockets = IO.select(
hostname_resolution_notifier,
connecting_sockets.keys,
is_windows_environment ? connecting_sockets.keys : nil,
second_to_timeout(current_clock_time, ends_at),
)
"TWXJOUIFQSFWJPVTJNQMFNFOUBUJPO
UIFBSHVNFOUTPUIFSUIBOUIFUJNFPVUBSF
ɾ5IFQJQFXBJUJOHGPSOBNFSFTPMVUJPOOPUJ
fi
DBUJPOT
ɾ5IFTPDLFUTDVSSFOUMZBUUFNQUJOHUPDPOOFDU
$BMM*0TFMFDUXJUIUIFUJNFPVUWBMVF
5IFQJQFXBJUJOHGPSOBNFSFTPMVUJPOOPUJ
fi
DBUJPO
5IFTPDLFUTBUUFNQUJOHUPDPOOFDU
Slide 108
Slide 108 text
"GUFS*0TFMFDU
hostname_resolved, writable_sockets, except_sockets = IO.select(
hostname_resolution_notifier,
connecting_sockets.keys,
is_windows_environment ? connecting_sockets.keys : nil,
second_to_timeout(current_clock_time, ends_at),
)
now = current_clock_time
if expired?(now, resolution_delay_expires_at)
resolution_delay_expires_at = nil
end
if expired?(now, connection_attempt_delay_expires_at)
connection_attempt_delay_expires_at = nil
end
0ODF*0TFMFDUVOCMPDLT
UIF
fi
STUTUFQJTUP
DIFDLUIFWBMVFTPGUIFUJNFPVUWBSJBCMFT
SFTPMVUJPO@EFMBZ@FYQJSFT@BUJTQBTU
DPOOFDUJPO@BUUFNQU@EFMBZ@FYQJSFT@BUJTQBTU
Slide 109
Slide 109 text
hostname_resolved, writable_sockets, except_sockets = IO.select(
hostname_resolution_notifier,
connecting_sockets.keys,
is_windows_environment ? connecting_sockets.keys : nil,
second_to_timeout(current_clock_time, ends_at),
)
now = current_clock_time
if expired?(now, resolution_delay_expires_at)
resolution_delay_expires_at = nil
end
if expired?(now, connection_attempt_delay_expires_at)
connection_attempt_delay_expires_at = nil
end
3FTFU
"GUFS*0TFMFDU
*GBOZTUPSFEUJNFIBTBMSFBEZQBTTFEBUUIJTQPJOU
JUJTSFTFUUPOJM
3FTFU
Slide 110
Slide 110 text
loop do
if then
timeout =
IO.select(, , nil, )
if then
if then
if then
end
$IFDLUIFSFTVMUPG*0TFMFDU
/FYU
CBTFEPOUIFSFTVMUPG*0TFMFDU
DIFDLXIFUIFS
ɾ0OFPSNPSFXSJUBCMFTPDLFUTBSFBWBJMBCMF
ɾ"OBNFSFTPMVUJPOOPUJ
fi
DBUJPOIBTBSSJWFEPOUIFQJQF
$IFDLUIFSFTVMU
Slide 111
Slide 111 text
0OFPSNPSFXSJUBCMFTPDLFUTBSFBWBJMBCMF
if writable_sockets&.any?
while (writable_socket = writable_sockets.pop)
is_connected = is_windows_environment || (
sockopt = writable_socket.getsockopt(Socket::SOL_SOCKET, Socket::SO_ERROR)
sockopt.int.zero?
)
if is_connected
connecting_sockets.delete writable_socket
return writable_socket
else
# ...
end
end
end
*GUIFSFBSFXSJUBCMFTPDLFUT
DIFDLUIFJSDPOOFDUJPO
TUBUVT*GUIFDPOOFDUJPOJTTVDDFTTGVM
SFUVSOUIFTPDLFUBOEFYJU4PDLFUUDQ
*TUIFDPOOFDUJPOTVDDFTTGVM
3FUVSOUIFTVDDFTTGVMMZDPOOFDUFETPDLFU
$IFDLUIFDPOOFDUJPOTUBUVT
Slide 112
Slide 112 text
if hostname_resolved&.any?
while (family_and_result = hostname_resolution_result.get)
family_name, result = family_and_result
if result.is_a? Exception
# ...
else
resolution_store.add_resolved(family_name, result)
end
end
# ...
end
*GBOBNFSFTPMVUJPOOPUJ
fi
DBUJPOIBTBSSJWFEPO
UIFQJQF
SFUSJFWFUIFSFTPMWFEBEESFTTFT
BOETUPSFUIFN
"OBNFSFTPMVUJPOOPUJ
fi
DBUJPOIBTBSSJWFE
0CUBJOSFTPMWFEBEESFTTFT
4UPSFUIFPCUBJOFEBEESFTTFT
Slide 113
Slide 113 text
if hostname_resolved&.any?
while (family_and_result = hostname_resolution_result.get)
# ...
end
if resolution_store.resolved?(:ipv4)
if resolution_store.resolved?(:ipv6)
hostname_resolution_notifier = nil
resolution_delay_expires_at = nil
user_specified_resolv_timeout_at = nil
elsif resolution_store.resolved_successfully?(:ipv4)
resolution_delay_expires_at = now + RESOLUTION_DELAY
end
end
end
*GPOMZ*1WJTSFTPMWFEBOE*1WJTTUJMMVOSFTPMWFE
TFU
SFTPMVUJPO@EFMBZ@FYQJSFT@BUUPUIFDVSSFOUUJNF
NTUPXBJUGPS*1WSFTPMVUJPOJOUIFOFYUMPPQ
"OBNFSFTPMVUJPOOPUJ
fi
DBUJPOIBTBSSJWFE
4FUSFTPMVUJPO@EFMBZ@FYQJSFT@BU
*1WIBTCFFOSFTPMWFE
*1WIBTOPUCFFOSFTPMWFE
Slide 114
Slide 114 text
loop do
if then
timeout =
IO.select(, , nil, )
if then
if then
if then
end
"UUIFFOEPGUIFMPPQ
"UUIFFOEPGUIFMPPQ
UIFSFJTBDIFDLUPEFUFSNJOF
XIFUIFSUIFOFYUMPPQJUFSBUJPODBOQSPDFFE
Slide 115
Slide 115 text
loop do
# ...
if resolution_store.empty_addrinfos?
if connecting_sockets.empty? && resolution_store.resolved_all_families?
raise last_error
end
if (expired?(now, user_specified_resolv_timeout_at) || ...) &&
(expired?(now, user_specified_connect_timeout_at) || ...)
raise Errno::ETIMEDOUT, 'user specified timeout'
end
end
end ɾ*GUIFSFBSFOPBWBJMBCMFBEESFTTDBOEJEBUFT
ɾ"OEUIFSFBSFOPTPDLFUTDVSSFOUMZDPOOFDUJOH
ɾ"OEBMMOBNFSFTPMVUJPOTIBWFDPNQMFUFE
UIFOOPGVSUIFSQSPDFTTJOHDBOCFQFSGPSNFE
TPBOFYDFQUJPOJTSBJTFE
8IFUIFSUIFOFYUMPPQJUFSBUJPODBOQSPDFFE
3BJTFBOFYDFQUJPO
Slide 116
Slide 116 text
loop do
# ...
if resolution_store.empty_addrinfos?
if connecting_sockets.empty? && resolution_store.resolved_all_families?
raise last_error
end
if (expired?(now, user_specified_resolv_timeout_at) || ...) &&
(expired?(now, user_specified_connect_timeout_at) || ...)
raise Errno::ETIMEDOUT, 'user specified timeout'
end
end
end
*GUIFVTFSTQFDJ
fi
FEUJNFPVUTIBWFCFFOFYDFFEFE
SBJTFBUJNFPVUFYDFQUJPO
8IFUIFSUIFOFYUMPPQJUFSBUJPODBOQSPDFFE
3BJTFBUJNFPVUFYDFQUJPO
Slide 117
Slide 117 text
loop do
# ...
if resolution_store.empty_addrinfos?
if connecting_sockets.empty? && resolution_store.resolved_all_families?
raise last_error
end
if (expired?(now, user_specified_resolv_timeout_at) || ...) &&
(expired?(now, user_specified_connect_timeout_at) || ...)
raise Errno::ETIMEDOUT, 'user specified timeout'
end
end
end
0UIFSXJTF
TJODFUIFSFBSFTUJMMFYFDVUBCMFQSPDFTTFT
SFNBJOJOH
QSPDFFEUPUIFOFYUMPPQJUFSBUJPO
8IFUIFSUIFOFYUMPPQJUFSBUJPODBOQSPDFFE
5PCFDPOUJOVFE
⬇︎
Slide 118
Slide 118 text
def self.tcp(host, port, ...)
loop do
if then
timeout =
IO.select(, , nil, )
if then
if then
if then
end
end 5IJTSFQFBUTVOUJM4PDLFUUDQSFUVSOTBTVDDFTTGVMMZ
DPOOFDUFETPDLFU
8IFUIFSUIFOFYUMPPQJUFSBUJPODBOQSPDFFE
Slide 119
Slide 119 text
def self.tcp(host, port, ...)
loop do
if then
timeout =
IO.select(, , nil, )
if then
if then
if then
end
end
5IFJNQSPWFEWFSTJPOPG4PDLFUUDQ
5IFJNQSPWFEWFSTJPOPG4PDLFUUDQJTOPXDPNQMFUF
Slide 120
Slide 120 text
+VMZ
Slide 121
Slide 121 text
+VMZ
5IJTWFSTJPOPG4PDLFUUDQJTNFSHFE
JOUP3VCZNBTUFS
IUUQTHJUIVCDPNSVCZSVCZQVMM
.FSHFE
Slide 122
Slide 122 text
8JUIUIJT4PDLFUUDQJNQMFNFOUBUJPO
BTUIFGPVOEBUJPO
JUT
fi
OBMMZSFBEZUPTUBSUXPSLJOHPO
5$14PDLFUOFX
Slide 123
Slide 123 text
%FDFNCFS
5JNFHPFTCBDLUP
Slide 124
Slide 124 text
%FDFNCFS
5JNFHPFTCBDLUP
4UBSUFEUPUIJOLPG5$14PDLFUOFX
Slide 125
Slide 125 text
IUUQTYDPNUPNPHTUBUVT
.F
!BLS
!OBSTF
%FDFNCFS
Slide 126
Slide 126 text
5IJOLPG5$14PDLFUOFX
5$14PDLFUOFX
MJLF4PDLFUUDQ
JTBNFUIPEUIBUSFUVSOTBDMJFOUTPDLFUDPOOFDUFEUPB
TFSWFSWJB5$1
5IFEJ
ff
FSFODFTGSPN4PDLFUUDQBSF
ɾ*UEPFTOPUBDDFQUBCMPDLBSHVNFOU
ɾ*UJTJNQMFNFOUFEJOUFSOBMMZJO$
Slide 127
Slide 127 text
*OPSEFSUPTVQQPSU)&WJO5$14PDLFUOFX
BMBSHFQPSUJPOPGUIF4PDLFUUDQDPEFOFFETUPCF
SFJNQMFNFOUFEJO$
5IJOLPG5$14PDLFUOFX
Slide 128
Slide 128 text
5IJOLPG5$14PDLFUOFX
*OPSEFSUPTVQQPSU)&WJO5$14PDLFUOFX
BMBSHFQPSUJPOPGUIF4PDLFUUDQDPEFOFFETUPCF
SFJNQMFNFOUFEJO$
0OFPGUIFLFZDIBMMFOHFTJTUIBUUIFTPDLFUMJCSBSZ
IBEOPJOUFSOBMGVODUJPOGPSXBJUJOHPOOBNFSFTPMVUJPO
VTJOHQJQFBOETFMFDU
Slide 129
Slide 129 text
$IBMMFOHFTTQFDJ
fi
DUP5$14PDLFUOFX
1SFSFRVJTJUF
5IF3VCZTPDLFUMJCSBSZQSPWJEFTNFUIPETGPSOBNFSFTPMVUJPO
TVDIBT"EESJOGPHFUBEESJOGPBOE4PDLFUHFUBEESJOGP
'PSFYBNQMF
"EESJOGPHFUBEESJOGPJTVTFEJO4PDLFUUDQXJUI
)&W
begin
resolved_addrinfos = Addrinfo.getaddrinfo(...)
hostname_resolution_queue.add_resolved(...)
rescue => e
# ...
end
Slide 130
Slide 130 text
1SFSFRVJTJUF
6OUJM3VCZ
UIFTFNFUIPETIBEBMJNJUBUJPO
UIFZDPVMEO`UCFJOUFSSVQUFEPODFFYFDVUJPOIBETUBSUFE
5IJTXBTCFDBVTFUIFZJOUFSOBMMZSFMJFEPOUIF$MJCSBSZ
GVODUJPOHFUBEESJOGP
XIJDIJTBCMPDLJOHGVODUJPO
UIBUJT
PODFDBMMFE
JUDBOOPUCFJOUFSSVQUFEVOUJMOBNF
SFTPMVUJPODPNQMFUFT
$IBMMFOHFTTQFDJ
fi
DUP5$14PDLFUOFX
Slide 131
Slide 131 text
1SFSFRVJTJUF
4UBSUJOHGSPN3VCZ
UIJTIBTCFFOJNQSPWFE
POFOWJSPONFOUTXIFSFUIFQUISFBEMJCSBSZJTBWBJMBCMF
OBNFSFTPMVUJPODBOOPXCFJOUFSSVQUFEFWFOXIJMFJOQSPHSFTT
3FG.BLFUIFOBNFSFTPMVUJPOJOUFSSVQUJCMF
IUUQTHJUIVCDPNSVCZSVCZQVMM
$IBMMFOHFTTQFDJ
fi
DUP5$14PDLFUOFX
Slide 132
Slide 132 text
*OUFSSVQUJCMFHFUBEESJOGP*NQMFNFOUBUJPO BTPG3VCZ
FH5IFDBMMTUBDLPG"EESJOGPHFUBEESJOGP
"EESJOGPHFUBEESJOGP
➡︎
BEESJOGP@T@HFUBEESJOGP
ɹ
➡︎
BEESJOGP@MJTU@OFX
ɹ
➡︎
DBMM@HFUBEESJOGP
ɹɹ
➡︎
STPDL@HFUBEESJOGP
ɹɹ
➡︎
SC@HFUBEESJOGP
-FUTTFFIPXUIFTFNFUIPETNBLFUIF
OBNFSFTPMVUJPOJOUFSSVQUJCMFJO3VCZ
*OBOFOWJSPONFOUXIFSFUIFQUISFBEMJCSBSZJTBWBJMBCMF
Slide 133
Slide 133 text
FH5IFDBMMTUBDLPG"EESJOGPHFUBEESJOGP
"EESJOGPHFUBEESJOGP
➡︎
BEESJOGP@T@HFUBEESJOGP
ɹ
➡︎
BEESJOGP@MJTU@OFX
ɹ
➡︎
DBMM@HFUBEESJOGP
ɹɹ
➡︎
STPDL@HFUBEESJOGP
ɹɹ
➡︎
SC@HFUBEESJOGP
*OUFSSVQUJCMFHFUBEESJOGP*NQMFNFOUBUJPO BTPG3VCZ
Attention!
*OBOFOWJSPONFOUXIFSFUIFQUISFBEMJCSBSZJTBWBJMBCMF
Slide 134
Slide 134 text
static int
rb_getaddrinfo(...)
{
// ...
pthread_t th;
if (do_pthread_create(&th, do_getaddrinfo, arg) != 0) {
free_getaddrinfo_arg(arg);
return EAI_AGAIN;
}
pthread_detach(th);
// ...
}
*OUFSSVQUJCMFHFUBEESJOGP*NQMFNFOUBUJPO BTPG3VCZ
IUUQTHJUIVCDPNSVCZSVCZCMPCSVCZ@@FYUTPDLFUSBEESJOGPD
BOEEFUBDIJU
4QBXOBOFXDIJMEUISFBE
*OBOFOWJSPONFOUXIFSFUIFQUISFBEMJCSBSZJTBWBJMBCMF
*OTJEFSC@HFUBEESJOGP
BOFXDIJMEUISFBEJTTQBXOFEBOEEFUBDIFE
GSPNUIFNBJOUISFBE
Slide 135
Slide 135 text
static int
rb_getaddrinfo(...)
{
// ...
pthread_t th;
if (do_pthread_create(&th, do_getaddrinfo, arg) != 0) {
free_getaddrinfo_arg(arg);
return EAI_AGAIN;
}
pthread_detach(th);
// ...
}
*OUFSSVQUJCMFHFUBEESJOGP*NQMFNFOUBUJPO BTPG3VCZ
static void *do_getaddrinfo(void *ptr)
{
// ...
int err, gai_errno;
err = getaddrinfo(...);
// ...
} $BMMHFUBEESJOGP
IUUQTHJUIVCDPNSVCZSVCZCMPCSVCZ@@FYUTPDLFUSBEESJOGPD
*OBOFOWJSPONFOUXIFSFUIFQUISFBEMJCSBSZJTBWBJMBCMF
*OUIFEFUBDIFEDIJMEUISFBE
HFUBEESJOGP
JTDBMMFE
Slide 136
Slide 136 text
static int
rb_getaddrinfo(...)
{
// ...
pthread_t th;
if (do_pthread_create(&th, do_getaddrinfo, arg) != 0) {
free_getaddrinfo_arg(arg);
return EAI_AGAIN;
}
pthread_detach(th);
// ...
}
*OUFSSVQUJCMFHFUBEESJOGP*NQMFNFOUBUJPO BTPG3VCZ
static void *do_getaddrinfo(void *ptr)
{
// ...
arg->done = 1;
rb_native_cond_signal(&arg->cond);
// ...
} 4JHOBMUPUIFNBJOUISFBE
IUUQTHJUIVCDPNSVCZSVCZCMPCSVCZ@@FYUTPDLFUSBEESJOGPD
*OBOFOWJSPONFOUXIFSFUIFQUISFBEMJCSBSZJTBWBJMBCMF
0ODFOBNFSFTPMVUJPOXJUIHFUBEESJOGP
JTDPNQMFUF
OPUJGZJUUPUIFNBJOUISFBEVTJOHBDPOEJUJPOWBSJBCMF
Slide 137
Slide 137 text
static int
rb_getaddrinfo(...)
{
// ...
pthread_t th;
if (do_pthread_create(&th, do_getaddrinfo, arg) != 0) {
free_getaddrinfo_arg(arg);
return EAI_AGAIN;
}
pthread_detach(th);
rb_thread_call_without_gvl2(wait_getaddrinfo, arg, cancel_getaddrinfo, arg);
// ...
}
*OUFSSVQUJCMFHFUBEESJOGP*NQMFNFOUBUJPO BTPG3VCZ
IUUQTHJUIVCDPNSVCZSVCZCMPCSVCZ@@FYUTPDLFUSBEESJOGPD
*OBOFOWJSPONFOUXIFSFUIFQUISFBEMJCSBSZJTBWBJMBCMF
*OUIFNBJOUISFBE
JUXBJUTVOUJMBOPUJ
fi
DBUJPOBSSJWFT
POUIFDPOEJUJPOWBSJBCMF
8BJUGPSOPUJ
fi
DBUJPOUPUIFDPOEJUJPOWBSJBCMF
Slide 138
Slide 138 text
static int
rb_getaddrinfo(...)
{
// ...
pthread_t th;
if (do_pthread_create(&th, do_getaddrinfo, arg) != 0) {
free_getaddrinfo_arg(arg);
return EAI_AGAIN;
}
pthread_detach(th);
rb_thread_call_without_gvl2(wait_getaddrinfo, arg, cancel_getaddrinfo, arg);
// ...
}
*OUFSSVQUJCMFHFUBEESJOGP*NQMFNFOUBUJPO BTPG3VCZ
IUUQTHJUIVCDPNSVCZSVCZCMPCSVCZ@@FYUTPDLFUSBEESJOGPD
*OBOFOWJSPONFOUXIFSFUIFQUISFBEMJCSBSZJTBWBJMBCMF
%FUFDUTBDPNQMFUJPOPGOBNFSFTPMVUJPO
%FUFDUTBOJOUFSSVQUJPO
5IJTDPOEJUJPOWBSJBCMFJTOPUJ
fi
FEOPUPOMZ
XIFOOBNFSFTPMVUJPODPNQMFUFTJOBDIJMEUISFBE
CVUBMTPXIFOUIFNFUIPEJTJOUFSSVQUFE
Slide 139
Slide 139 text
static int
rb_getaddrinfo(...)
{
// ...
pthread_t th;
if (do_pthread_create(&th, do_getaddrinfo, arg) != 0) {
free_getaddrinfo_arg(arg);
return EAI_AGAIN;
}
pthread_detach(th);
rb_thread_call_without_gvl2(wait_getaddrinfo, arg, cancel_getaddrinfo, arg);
// ...
}
*OUFSSVQUJCMFHFUBEESJOGP*NQMFNFOUBUJPO BTPG3VCZ
IUUQTHJUIVCDPNSVCZSVCZCMPCSVCZ@@FYUTPDLFUSBEESJOGPD
*OBOFOWJSPONFOUXIFSFUIFQUISFBEMJCSBSZJTBWBJMBCMF
5PCFDPOUJOVFE
⬇︎
0ODFUIFOPUJ
fi
DBUJPOBSSJWFT
UIFXBJUJTMJGUFE
BOEUIFTVCTFRVFOUQSPDFTTJOHJTDBSSJFEPVU
CBTFEPOUIFSFBTPOUIBUUSJHHFSFEUIFOPUJ
fi
DBUJPO
Slide 140
Slide 140 text
static int
rb_getaddrinfo(...)
{
// ...
pthread_t th;
if (do_pthread_create(&th, do_getaddrinfo, arg) != 0) {
free_getaddrinfo_arg(arg);
return EAI_AGAIN;
}
pthread_detach(th);
rb_thread_call_without_gvl2(wait_getaddrinfo, arg, cancel_getaddrinfo, arg);
// ...
}
*OUFSSVQUJCMFHFUBEESJOGP*NQMFNFOUBUJPO BTPG3VCZ
IUUQTHJUIVCDPNSVCZSVCZCMPCSVCZ@@FYUTPDLFUSBEESJOGPD
*OBOFOWJSPONFOUXIFSFUIFQUISFBEMJCSBSZJTBWBJMBCMF
5PCFDPOUJOVFE
⬇︎
8JUIUIBUJONJOE
MFUTHFUCBDLUPUIFNBJOUPQJD
Slide 141
Slide 141 text
5$14PDLFUOFX
➡︎
UDQ@JOJU
➡︎
STPDL@JOJU@JOFUTPDL
➡︎
JOJU@JOFUTPDL@JOUFSOBM
➡︎
STPDL@BEESJOGPɹ
➡︎
STPDL@HFUBEESJOGP
➡︎
SC@HFUBEESJOGP
➡︎
5IFDBMMTUBDLPG5$14PDLFUOFX 3VCZ
*OUFSSVQUJCMFOBNFSFTPMVUJPO
*O5$14PDLFUOFX
SC@BEESJOGPJTBMTPVTFEGPSOBNFSFTPMVUJPO
4UBSUOBNFSFTPMVUJPO
Slide 142
Slide 142 text
5$14PDLFUOFX
➡︎
UDQ@JOJU
➡︎
STPDL@JOJU@JOFUTPDL
➡︎
JOJU@JOFUTPDL@JOUFSOBM
➡︎
STPDL@BEESJOGPɹ
➡︎
STPDL@HFUBEESJOGP
➡︎
SC@HFUBEESJOGP
➡︎
5IFDBMMTUBDLPG5$14PDLFUOFX 3VCZ
5IFQSPCMFNJTUIBUSC@HFUBEESJOGPJTOPUEFTJHOFE
GPS)&W
Not for HEv2 ...
Slide 143
Slide 143 text
4QFDJ
fi
DBUJPO%J
ff
FSFODF
5IFOVNCFSPGDIJMEUISFBETTQBXOFE
SC@HFUBEESJOGP
$SFBUFDIJMEUISFBE
'VODUJPOGPS5$14PDLFUOFX
$SFBUFrDIJMEUISFBET POFGPSFBDIBEESFTTGBNJMZ
SC@HFUBEESJOGPWT5$14PDLFUOFXXJUI)&W
SC@HFUBEESJOGP
4QBXODIJMEUISFBE
EPFTOPUTQFDJGZ
BOBEESFTTGBNJMZEVSJOH
OBNFSFTPMVUJPO
5$14PDLFUOFXGPS)&W
4QBXOrDIJMEUISFBET
POFGPSFBDIBEESFTTGBNJMZ
Slide 144
Slide 144 text
4QFDJ
fi
DBUJPO%J
ff
FSFODF
%FUFDUJOHOBNFSFTPMVUJPODPNQMFUJPO
5$14PDLFUOFXGPS)&W
6TJOHBQJQFBOETFMFDU
#FDBVTFJUOFFETUPXBJUOPU
POMZGPSOBNFSFTPMVUJPOCVU
BMTPGPSTPDLFUTBUUFNQUJOH
UPDPOOFDU
SC@HFUBEESJOGP
6TJOHBDPOEJUJPOWBSJBCMF
SC@HFUBEESJOGPWT5$14PDLFUOFXXJUI)&W
Slide 145
Slide 145 text
4QFDJ
fi
DBUJPO%J
ff
FSFODF
.FUIPETUIBUDBMMUIJTGVODUJPO
SC@HFUBEESJOGP
6TFECZNVMUJQMFNFUIPETUIBUOFFEOBNFSFTPMVUJPO
FH"EESJOGPHFUBEESJOGP
4PDLFUHFUBEESJOGP
*14PDLFUHFUBEESFTT
SC@HFUBEESJOGPWT5$14PDLFUOFXXJUI)&W
Slide 146
Slide 146 text
5$14PDLFUOFXXJUI)&WOFFET
BOFXNFDIBOJTNTQFDJ
fi
DBMMZEFTJHOFEGPS
5$14PDLFUOFXJUTFMG
Slide 147
Slide 147 text
<#FGPSF>5IF5$14PDLFUOFXJNQMFNFOUBUJPO
5$14PDLFUOFX
➡︎
UDQ@JOJU
➡︎
STPDL@JOJU@JOFUTPDL
➡︎
JOJU@JOFUTPDL@JOUFSOBM
➡︎
STPDL@BEESJOGPɹ
➡︎
STPDL@HFUBEESJOGP
➡︎
SC@HFUBEESJOGP
➡︎
)FSFJTUIFDBMMTUBDLPG5$14PDLFUOFX
CFGPSFUIFDIBOHF
Slide 148
Slide 148 text
5$14PDLFUOFX
➡︎
UDQ@JOJU
➡︎
STPDL@JOJU@JOFUTPDL
➡︎
JOJU@GBTU@GBMMCBDL@JOFUTPDL@JOUFSOBM
➡︎
SBEESJOGP@QUISFBE@DSFBUF
➡︎
EP@GBTU@GBMMCBDL@HFUBEESJOGPɹ
➡︎
SC@UISFBE@DBMM@XJUIPVU@HWM
➡︎
XBJU@GBTU@GBMMCBDLDBODFM@GBTU@GBMMCBDL
➡︎
"TPG13IUUQTHJUIVCDPNSVCZSVCZQVMM
)FSFJTUIFDBMMTUBDLPG5$14PDLFUOFX
BGUFSUIFDIBOHF
<"GUFS>5IF5$14PDLFUOFXJNQMFNFOUBUJPO
Slide 149
Slide 149 text
5$14PDLFUOFX
➡︎
UDQ@JOJU
➡︎
STPDL@JOJU@JOFUTPDL
➡︎
JOJU@GBTU@GBMMCBDL@JOFUTPDL@JOUFSOBM
➡︎
SBEESJOGP@QUISFBE@DSFBUF
➡︎
EP@GBTU@GBMMCBDL@HFUBEESJOGPɹ
➡︎
SC@UISFBE@DBMM@XJUIPVU@HWM
➡︎
XBJU@GBTU@GBMMCBDLDBODFM@GBTU@GBMMCBDL
➡︎
<"GUFS>5IF5$14PDLFUOFXJNQMFNFOUBUJPO
"TPG13IUUQTHJUIVCDPNSVCZSVCZQVMM
Attention!
Slide 150
Slide 150 text
*OUIFNBJOUISFBE
static VALUE
init_fast_fallback_inetsock_internal(VALUE v)
{
// ...
if (raddrinfo_pthread_create(..., do_fast_fallback_getaddrinfo, ...) != 0) {
rsock_raise_resolution_error("getaddrinfo(3)", EAI_AGAIN);
}
pthread_detach(threads[i]);
// ...
}
*OTJEFJOJU@GBTU@GBMMCBDL@JOFUTPDL@JOUFSOBM
BOFXUISFBEJTDSFBUFEBOEEFUBDIFE
GPSFBDIBEESFTTGBNJMZ
"TPG13IUUQTHJUIVCDPNSVCZSVCZQVMM
BOEEFUBDIJU
$SFBUFBOFXUISFBE
Slide 151
Slide 151 text
*OUIFNBJOUISFBE
static VALUE
init_fast_fallback_inetsock_internal(VALUE v)
{
// ...
if (raddrinfo_pthread_create(..., do_fast_fallback_getaddrinfo, ...) != 0) {
// ...
}
pthread_detach(threads[i]);
// ...
}
*OTJEFFBDIPGUIFEFUBDIFEDIJMEUISFBET
HFUBEESJOGP
JTDBMMFE
$BMMJOUIFUISFBE
"TPG13IUUQTHJUIVCDPNSVCZSVCZQVMM
void *do_fast_fallback_getaddrinfo(void *ptr)
{
// ...
int err, gai_errno;
err = getaddrinfo(...);
// ...
} $BMMHFUBEESJOGP
Slide 152
Slide 152 text
*OUIFNBJOUISFBE
static VALUE
init_fast_fallback_inetsock_internal(VALUE v)
{
// ...
if (raddrinfo_pthread_create(..., do_fast_fallback_getaddrinfo, ...) != 0) {
// ...
}
pthread_detach(threads[i]);
// ...
}
0ODFOBNFSFTPMVUJPOJTDPNQMFUF
BOPUJ
fi
DBUJPOJTTFOUUPUIFQJQFTIBSFEXJUI
UIFNBJOUISFBE
$BMMJOUIFUISFBE
"TPG13IUUQTHJUIVCDPNSVCZSVCZQVMM
void *do_fast_fallback_getaddrinfo(void *ptr)
{
// ...
write(shared->notify, ¬ification,
strlen(¬ification));
// ...
}
8SJUFUIFOPUJGZUPUIFQJQF
Slide 153
Slide 153 text
*OUIFNBJOUISFBE
static VALUE
init_fast_fallback_inetsock_internal(VALUE v)
{
// ...
if (raddrinfo_pthread_create(..., do_fast_fallback_getaddrinfo, ...) != 0) {
rsock_raise_resolution_error("getaddrinfo(3)", EAI_AGAIN);
}
pthread_detach(threads[i]);
// ...
rb_thread_call_without_gvl2(
wait_fast_fallback, &wait_arg,
cancel_fast_fallback, arg->getaddrinfo_shared
);
// ...
}
.FBOXIJMF
JOUIFNBJOUISFBE
DBMMBGVODUJPOUPXBJU
GPSCPUIOBNFSFTPMVUJPOPSBDPOOFDUJPOUPDPNQMFUF
8BJUGPSCPUIDPOOFDUJPODPNQMFUJPO
BOEOBNFSFTPMVUJPO
5PCFDPOUJOVFE
⬇︎
"TPG13IUUQTHJUIVCDPNSVCZSVCZQVMM
Slide 154
Slide 154 text
8BJUJOHGPSCPUIDPOOFDUJPOBOEOBNFSFTPMVUJPO
static void *
wait_fast_fallback(void *ptr)
{
struct wait_fast_fallback_arg *arg = (struct wait_fast_fallback_arg *)ptr;
int status;
status = select(arg->nfds, arg->readfds, arg->writefds, NULL, arg->delay);
arg->status = status;
if (errno == EINTR) *arg->cancelled = true;
return 0;
}
*OUIFXBJUJOHGVODUJPO
DBMMTFMFDU
UPNPOJUPSCPUI
UIFQJQFXBJUJOHGPSOBNFSFTPMVUJPOOPUJ
fi
DBUJPOBOE
UIFTPDLFUTDVSSFOUMZBUUFNQUJOHUPDPOOFDU
"TPG13IUUQTHJUIVCDPNSVCZSVCZQVMM
Slide 155
Slide 155 text
static void *
wait_fast_fallback(void *ptr)
{
struct wait_fast_fallback_arg *arg = (struct wait_fast_fallback_arg *)ptr;
int status;
status = select(arg->nfds, arg->readfds, arg->writefds, NULL, arg->delay);
arg->status = status;
if (errno == EINTR) *arg->cancelled = true;
return 0;
}
TFMFDU
VOCMPDLTXIFOFJUIFSBOBNFSFTPMVUJPO
DPNQMFUJPOOPUJ
fi
DBUJPOBSSJWFTPOUIFQJQF
BOZPGUIF
TPDLFUTDVSSFOUMZBUUFNQUJOHUPDPOOFDUCFDPNF
XSJUBCMF
PSUIFXBJUUJNFFYDFFETUIFUJNFPVU
"TPG13IUUQTHJUIVCDPNSVCZSVCZQVMM
8BJUJOHGPSCPUIDPOOFDUJPOBOEOBNFSFTPMVUJPO
*ODMVEFTUIFQJQF *ODMVEFTUIFTPDLFUTBUUFNQUJOHUPDPOOFDU
Slide 156
Slide 156 text
static void *
wait_fast_fallback(void *ptr)
{
struct wait_fast_fallback_arg *arg = (struct wait_fast_fallback_arg *)ptr;
int status;
status = select(arg->nfds, arg->readfds, arg->writefds, NULL, arg->delay);
arg->status = status;
if (errno == EINTR) *arg->cancelled = true;
return 0;
}
*OTIPSU
UIJTTFMFDU
QFSGPSNTUIFTBNFSPMFBTUIF
*0TFMFDUJOUIF4PDLFUUDQJNQMFNFOUBUJPO
"TPG13IUUQTHJUIVCDPNSVCZSVCZQVMM
8BJUJOHGPSCPUIDPOOFDUJPOBOEOBNFSFTPMVUJPO
Slide 157
Slide 157 text
5$14PDLFUOFX
➡︎
UDQ@JOJU
➡︎
STPDL@JOJU@JOFUTPDL
➡︎
JOJU@GBTU@GBMMCBDL@JOFUTPDL@JOUFSOBM
➡︎
SBEESJOGP@QUISFBE@DSFBUF
➡︎
EP@GBTU@GBMMCBDL@HFUBEESJOGPɹ
➡︎
SC@UISFBE@DBMM@XJUIPVU@HWM
➡︎
XBJU@GBTU@GBMMCBDLDBODFM@GBTU@GBMMCBDL
➡︎
$BMM4UBDLPG5$14PDLFUOFXXJUI)&W
"TPG13IUUQTHJUIVCDPNSVCZSVCZQVMM
"OBNFSFTPMVUJPOGVODUJPO
JOUIFDIJMEUISFBE
4QBXOBOFXDIJMEUISFBE
8BJUJOUIFNBJOUISFBE
5IJTJNQMFNFOUBUJPOBMTPSFRVJSFTUIFQUISFBEMJCSBSZ
5$14PDLFUOFXXJUI)&WJTPOMZJOFOWJSPONFOUT
XIFSFQUISFBEJTBWBJMBCMFBOECFIBWFTBTJUBMXBZT
IBTPOQMBUGPSNTMJLF8JOEPXT
Slide 158
Slide 158 text
%FWFMPQNFOUPO5$14PDLFUOFX
IBECFFOQBVTFEBGUFS3VCZ,BJHJ
XIJMF4PDLFUUDQXBTCFJOHSFJNQMFNFOUFE
Slide 159
Slide 159 text
+VMZ
3FTVNFJNQMFNFOUBUJPOPG5$14PDLFUOFX
"GUFSUIFTFDPOENFSHFPG4PDLFUUDQ
Slide 160
Slide 160 text
4FQUFNCFS
Slide 161
Slide 161 text
4FQUFNCFS
0QFOB1VMM3FRVFTUGPS5$14PDLFUOFX
IUUQTHJUIVCDPNSVCZSVCZQVMM
Slide 162
Slide 162 text
)PXFWFS
XIJMF*XBTNBLJOH
fi
YFTUPHFUUIF$*UPQBTT
BOESFRVFTUJOHSFWJFXT
Slide 163
Slide 163 text
0DUPCFS
Slide 164
Slide 164 text
0DUPCFS
3VCZQSFWJFXSFMFBTFE
5$14PDLFUOFXXJUI)&WEJEO`UNBLFJUJOUJNF
Slide 165
Slide 165 text
/PWFNCFS
Slide 166
Slide 166 text
/PWFNCFS
!ITCUSFDPNNFOEFENFBTB3VCZDPNNJUUFS
!NBU[ :VLJIJSP.BUTVNPUP
*QSPQPTF!TIJPJNN .JTBLJ
4IJPJ
BTB3VCZDPNNJUUFS4IFJTCFTUQFSTPOUPNBJOUBJO
)&WBOE4PDLFUSFMBUFEGFBUVSF*UTHPPEUJNFUPDPNNJU
IUUQTHJUIVCDPNSVCZSVCZQVMMCZIFSTFMG
IUUQTCVHTSVCZMBOHPSHJTTVFT
Slide 167
Slide 167 text
/PWFNCFS
Slide 168
Slide 168 text
/PWFNCFS
"DDFQUFE
.BU[
IUUQTCVHTSVCZMBOHPSHJTTVFT
Slide 169
Slide 169 text
/PWFNCFS
Slide 170
Slide 170 text
/PWFNCFS
*CFDBNFBOFX3VCZDPNNJUUFS
:PV`WFCFFOBEEFEUPUIFSVCZDPNNJUUFSTUFBN
GPSUIFPSHBOJ[BUJPO
5IF3VCZ1SPHSBNNJOH-BOHVBHF
Slide 171
Slide 171 text
/PWFNCFS
"GUFS
fi
OJTIJOHUIF
fi
YFTCBTFEPOUIFSFWJFX
Slide 172
Slide 172 text
/PWFNCFS
.FSHFE13JOUPNBTUFS
Slide 173
Slide 173 text
15 of 29 CIs failed!!
/PWFNCFS
Slide 174
Slide 174 text
8IJDIUFTUTXFSFGBJMJOHPO$*
0SUFTUTTJNJMBSUPUIFTFBSFJODMVEFEJOUIFUFTUTGPS
/FU)551
> 1) Failure:
> TestNetHTTP_v1_2_chunked#test_timeout_during_HTTP_session_write
> [/.../ruby/test/net/http/test_http.rb:572]:
> [Net::WriteTimeout] exception expected,
> not #.
Slide 175
Slide 175 text
5FTU/FU)551@W@@DIVOLFEUFTU@UJNFPVU@EVSJOH@)551@TFTTJPO@XSJUF
def test_timeout_during_HTTP_session_write
th = nil
TCPServer.open('localhost', 0) {|server|
port = server.addr[1]
conn = Net::HTTP.new('localhost', port)
conn.write_timeout = EnvUtil.apply_timeout_scale(0.01)
conn.open_timeout = EnvUtil.apply_timeout_scale(0.1)
th = Thread.new do
assert_raise(Net::WriteTimeout) do
assert_warning(/Content-Type did not set/) do
conn.post('/', "a"*50_000_000)
end
end
end
assert th.join(EnvUtil.apply_timeout_scale(10))
}
# ...
end
UFTUOFUIUUQUFTU@IUUQSC "TPG13IUUQTHJUIVCDPNSVCZSVCZQVMM
5IF8JOEPXTTQFDJ
fi
DQBSUTBSFPNJUUFE
Slide 176
Slide 176 text
5FTU/FU)551@W@@DIVOLFEUFTU@UJNFPVU@EVSJOH@)551@TFTTJPO@XSJUF
def test_timeout_during_HTTP_session_write
th = nil
TCPServer.open('localhost', 0) {|server|
port = server.addr[1]
conn = Net::HTTP.new('localhost', port)
conn.write_timeout = EnvUtil.apply_timeout_scale(0.01)
conn.open_timeout = EnvUtil.apply_timeout_scale(0.1)
th = Thread.new do
assert_raise(Net::WriteTimeout) do
assert_warning(/Content-Type did not set/) do
conn.post('/', "a"*50_000_000)
end
end
end
assert th.join(EnvUtil.apply_timeout_scale(10))
}
# ...
end
*OUIJTUFTU
BTFSWFSJT
fi
STUTUBSUFEPOMPDBMIPTU
4UBSUB5$1TFSWFS
UFTUOFUIUUQUFTU@IUUQSC "TPG13IUUQTHJUIVCDPNSVCZSVCZQVMM
5IF8JOEPXTTQFDJ
fi
DQBSUTBSFPNJUUFE
Slide 177
Slide 177 text
5FTU/FU)551@W@@DIVOLFEUFTU@UJNFPVU@EVSJOH@)551@TFTTJPO@XSJUF
def test_timeout_during_HTTP_session_write
th = nil
TCPServer.open('localhost', 0) {|server|
port = server.addr[1]
conn = Net::HTTP.new('localhost', port)
conn.write_timeout = EnvUtil.apply_timeout_scale(0.01)
conn.open_timeout = EnvUtil.apply_timeout_scale(0.1)
th = Thread.new do
assert_raise(Net::WriteTimeout) do
assert_warning(/Content-Type did not set/) do
conn.post('/', "a"*50_000_000)
end
end
end
assert th.join(EnvUtil.apply_timeout_scale(10))
}
# ...
end
5IFO
UIFDMJFOUTUJNFPVUWBMVFTBSFTFU
BXSJUFUJNFPVUPGNT
BOEBDPOOFDUUJNFPVUPGNT
XSJUFUJNFPVU NT
DPOOFDUUJNFPVU NT
UFTUOFUIUUQUFTU@IUUQSC "TPG13IUUQTHJUIVCDPNSVCZSVCZQVMM
5IF8JOEPXTTQFDJ
fi
DQBSUTBSFPNJUUFE
Slide 178
Slide 178 text
5FTU/FU)551@W@@DIVOLFEUFTU@UJNFPVU@EVSJOH@)551@TFTTJPO@XSJUF
def test_timeout_during_HTTP_session_write
th = nil
TCPServer.open('localhost', 0) {|server|
port = server.addr[1]
conn = Net::HTTP.new('localhost', port)
conn.write_timeout = EnvUtil.apply_timeout_scale(0.01)
conn.open_timeout = EnvUtil.apply_timeout_scale(0.1)
th = Thread.new do
assert_raise(Net::WriteTimeout) do
assert_warning(/Content-Type did not set/) do
conn.post('/', "a"*50_000_000)
end
end
end
assert th.join(EnvUtil.apply_timeout_scale(10))
}
# ...
end
5IFDMJFOUUIFOTUBSUTBDPOOFDUJPOUPUIFTFSWFS
4UBSUBOFXDPOOFDUJPO
UFTUOFUIUUQUFTU@IUUQSC "TPG13IUUQTHJUIVCDPNSVCZSVCZQVMM
5IF8JOEPXTTQFDJ
fi
DQBSUTBSFPNJUUFE
Slide 179
Slide 179 text
def test_timeout_during_HTTP_session_write
th = nil
TCPServer.open('localhost', 0) {|server|
port = server.addr[1]
conn = Net::HTTP.new('localhost', port)
conn.write_timeout = EnvUtil.apply_timeout_scale(0.01)
conn.open_timeout = EnvUtil.apply_timeout_scale(0.1)
th = Thread.new do
assert_raise(Net::WriteTimeout) do
assert_warning(/Content-Type did not set/) do
conn.post('/', "a"*50_000_000)
end
end
end
assert th.join(EnvUtil.apply_timeout_scale(10))
}
# ...
end
5FTU/FU)551@W@@DIVOLFEUFTU@UJNFPVU@EVSJOH@)551@TFTTJPO@XSJUF
4FOEBWFSZMPOHTUSJOH
*GUIFDPOOFDUJPOJTTVDDFTTGVM
JUBUUFNQUTUPTFOEBWFSZMPOHTUSJOH
BTBSFRVFTUNFTTBHFUPUIFTFSWFS
UFTUOFUIUUQUFTU@IUUQSC "TPG13IUUQTHJUIVCDPNSVCZSVCZQVMM
5IF8JOEPXTTQFDJ
fi
DQBSUTBSFPNJUUFE
Slide 180
Slide 180 text
5FTU/FU)551@W@@DIVOLFEUFTU@UJNFPVU@EVSJOH@)551@TFTTJPO@XSJUF
def test_timeout_during_HTTP_session_write
th = nil
TCPServer.open('localhost', 0) {|server|
port = server.addr[1]
conn = Net::HTTP.new('localhost', port)
conn.write_timeout = EnvUtil.apply_timeout_scale(0.01)
conn.open_timeout = EnvUtil.apply_timeout_scale(0.1)
th = Thread.new do
assert_raise(Net::WriteTimeout) do
assert_warning(/Content-Type did not set/) do
conn.post('/', "a"*50_000_000)
end
end
end
assert th.join(EnvUtil.apply_timeout_scale(10))
}
# ...
end
5IFFYQFDUBUJPOJTUIBUEVSJOHUIFTFOE
NTXJMM
QBTTBOE/FU8SJUF5JNFPVUBTBXSJUFUJNFPVU
XJMMCFSBJTFE
UFTUOFUIUUQUFTU@IUUQSC "TPG13IUUQTHJUIVCDPNSVCZSVCZQVMM
5IF8JOEPXTTQFDJ
fi
DQBSUTBSFPNJUUFE
Slide 181
Slide 181 text
/PU/FU8SJUF5JNFPVU
CVU/FU0QFO5JNFPVU
*OUIFGBJMJOHUFTU
/FU0QFO5JNFPVUPDDVSTXIFSF/FU8SJUF5JNFPVUJTFYQFDUFE
5IJTJOEJDBUFTUIBUUIFUJNFPVUJTIBQQFOJOHEVSJOHUIFDPOOFDUJPO
BUUFNQU
CFGPSFUIFXSJUFFWFOCFHJOT
> 1) Failure:
> TestNetHTTP_v1_2_chunked#test_timeout_during_HTTP_session_write
> [/.../ruby/test/net/http/test_http.rb:572]:
> [Net::WriteTimeout] exception expected,
> not #.
Slide 182
Slide 182 text
/FU)551DPOOFDU
def connect
# ...
s = Timeout.timeout(@open_timeout, Net::OpenTimeout) {
begin
TCPSocket.open(conn_addr, conn_port, @local_host, @local_port)
rescue => e
# ...
end
}
# ...
end
private :connect
MJCOFUIUUQSC "TPG13IUUQTHJUIVCDPNSVCZSVCZQVMM
-FUTUBLFBMPPLBU/FU)551
5IFNFUIPESFTQPOTJCMFGPSBUUFNQUJOH
B5$1DPOOFDUJPOJT/FU)551DPOOFDU
5$14PDLFUPQFO
BOBMJBTGPS5$14PDLFUOFXTUBSUTBDPOOFDUJPO
Slide 183
Slide 183 text
/FU)551DPOOFDU
def connect
# ...
s = Timeout.timeout(@open_timeout, Net::OpenTimeout) {
begin
TCPSocket.open(conn_addr, conn_port, @local_host, @local_port)
rescue => e
# ...
end
}
# ...
end
private :connect
)FSF
UJNFPVUHFNJTVTFEUPNBOBHFUIFDPOOFDUJPO
UJNFPVU*GUIFUJNFUBLFOGPSUIFDPOOFDUJPOBUUFNQU
FYDFFETUIFTQFDJ
fi
FEUJNFPVUWBMVF
/FU0QFO5JNFPVUJTSBJTFE
.BOBHFUJNFPVU /FU0QFO5JNFPVUXJUIDPOOFDUUJNFPVU
MJCOFUIUUQSC "TPG13IUUQTHJUIVCDPNSVCZSVCZQVMM
Slide 184
Slide 184 text
/FU)551DPOOFDU
def connect
# ...
s = Timeout.timeout(@open_timeout, Net::OpenTimeout) {
begin
TCPSocket.open(conn_addr, conn_port, @local_host, @local_port)
rescue => e
# ...
end
}
# ...
end
private :connect
5IJTDPEFBOEUIFUFTUXFSFXPSLJOHBTFYQFDUFE
CFGPSF)&WXBTJOUSPEVDFE4PXIBU`THPJOHPOOPX
def test_timeout_during_HTTP_session_write
th = nil
TCPServer.open('localhost', 0) {|server|
# ...
conn.open_timeout = EnvUtil.apply_timeout_scale(0.1)
# ...
}
# ...
end UFTUOFUIUUQUFTU@IUUQSC
MJCOFUIUUQSC "TPG13IUUQTHJUIVCDPNSVCZSVCZQVMM
Slide 185
Slide 185 text
def test_timeout_during_HTTP_session_write
th = nil
TCPServer.open('localhost', 0) {|server|
port = server.addr[1]
conn = Net::HTTP.new('localhost', port)
conn.write_timeout = EnvUtil.apply_timeout_scale(0.01)
conn.open_timeout = EnvUtil.apply_timeout_scale(0.1)
th = Thread.new do
assert_raise(Net::WriteTimeout) do
assert_warning(/Content-Type did not set/) do
conn.post('/', "a"*50_000_000)
end
end
end
assert th.join(EnvUtil.apply_timeout_scale(10))
}
# ...
end
"OTXFSJOHUIFRVFTUJPO8IZJTUIFUFTUGBJMJOH
-FU`TUBLFMPPLBUUIFUFTUDPEFBHBJO
5IFTFSWFSJTTUBSUFECZQBTTJOHMPDBMIPTU
UP5$14FSWFSOFX
4UBSUB5$1TFSWFS
XJUIIPTUOBNFMPDBMIPTU
UFTUOFUIUUQUFTU@IUUQSC "TPG13IUUQTHJUIVCDPNSVCZSVCZQVMM
5IF8JOEPXTTQFDJ
fi
DQBSUTBSFPNJUUFE
Slide 186
Slide 186 text
def test_timeout_during_HTTP_session_write
th = nil
TCPServer.open('localhost', 0) {|server|
port = server.addr[1]
conn = Net::HTTP.new('localhost', port)
conn.write_timeout = EnvUtil.apply_timeout_scale(0.01)
conn.open_timeout = EnvUtil.apply_timeout_scale(0.1)
th = Thread.new do
assert_raise(Net::WriteTimeout) do
assert_warning(/Content-Type did not set/) do
conn.post('/', "a"*50_000_000)
end
end
end
assert th.join(EnvUtil.apply_timeout_scale(10))
}
# ...
end
*OUIFCBDLHSPVOE
UIFTFSWFSSFTPMWFTUIFIPTUOBNF
MPDBMIPTUBOECJOETJUTMJTUFOJOHTPDLFU
UPPOFPGUIFSFTPMWFEBEESFTTFT
CJOE
0OFPGUIFSFTPMWFEBEESFTTFT
"MJTUFOJOHTPDLFU
4FSWFS
"OTXFSJOHUIFRVFTUJPO8IZJTUIFUFTUGBJMJOH
UFTUOFUIUUQUFTU@IUUQSC "TPG13IUUQTHJUIVCDPNSVCZSVCZQVMM
5IF8JOEPXTTQFDJ
fi
DQBSUTBSFPNJUUFE
Slide 187
Slide 187 text
def test_timeout_during_HTTP_session_write
th = nil
TCPServer.open('localhost', 0) {|server|
port = server.addr[1]
conn = Net::HTTP.new('localhost', port)
conn.write_timeout = EnvUtil.apply_timeout_scale(0.01)
conn.open_timeout = EnvUtil.apply_timeout_scale(0.1)
th = Thread.new do
assert_raise(Net::WriteTimeout) do
assert_warning(/Content-Type did not set/) do
conn.post('/', "a"*50_000_000)
end
end
end
assert th.join(EnvUtil.apply_timeout_scale(10))
}
# ...
end
0OBEVBMTUBDLIPTU
UIFTFSWFSCJOETUP
FJUIFS *1W
PS *1W
EFQFOEJOHPOXIJDIPOFJTSFTPMWFE
fi
STU
"MJTUFOJOHTPDLFU
4FSWFS
PS
8IJDIFWFSSFTPMWFT
fi
STU
CJOE
8IFUIFS*1WPS*1WHFUTSFTPMWFE
fi
STU
EFQFOETPOUIF04BOEOFUXPSLTFUUJOHT
"OTXFSJOHUIFRVFTUJPO8IZJTUIFUFTUGBJMJOH
UFTUOFUIUUQUFTU@IUUQSC "TPG13IUUQTHJUIVCDPNSVCZSVCZQVMM
5IF8JOEPXTTQFDJ
fi
DQBSUTBSFPNJUUFE
Slide 188
Slide 188 text
def test_timeout_during_HTTP_session_write
th = nil
TCPServer.open('localhost', 0) {|server|
port = server.addr[1]
conn = Net::HTTP.new('localhost', port)
conn.write_timeout = EnvUtil.apply_timeout_scale(0.01)
conn.open_timeout = EnvUtil.apply_timeout_scale(0.1)
th = Thread.new do
assert_raise(Net::WriteTimeout) do
assert_warning(/Content-Type did not set/) do
conn.post('/', "a"*50_000_000)
end
end
end
assert th.join(EnvUtil.apply_timeout_scale(10))
}
# ...
end
*OUIFFOWJSPONFOUXIFSFUIFUFTUXBTGBJMJOH
UIFTFSWFSFOEFEVQCJOEJOHUP *1W
"MJTUFOJOHTPDLFU
4FSWFS
*OUIFFOWJSPONFOU
XIFSFUIFUFTUXBTGBJMJOH
CJOE
"OTXFSJOHUIFRVFTUJPO8IZJTUIFUFTUGBJMJOH
UFTUOFUIUUQUFTU@IUUQSC "TPG13IUUQTHJUIVCDPNSVCZSVCZQVMM
5IF8JOEPXTTQFDJ
fi
DQBSUTBSFPNJUUFE
Slide 189
Slide 189 text
0OUIFPUIFSTJEF
JGUIFDMJFOUTVDDFTTGVMMZSFTPMWFTCPUI
*1WBOE*1WBEESFTTFT
JUGPMMPXTUIF)&WTQFDJ
fi
DBUJPOBOEQSJPSJUJ[FTDPOOFDUJOH
UPUIF*1WBEESFTT
4FSWFS
4UBSUBDPOOFDUJPOBUUFNQUUP
5$14PDLFUOFX
"OTXFSJOHUIFRVFTUJPO8IZJTUIFUFTUGBJMJOH
3FTPMWFECPUI
BOE
Slide 190
Slide 190 text
"OTXFSJOHUIFRVFTUJPO8IZJTUIFUFTUGBJMJOH
)PXFWFS
UIFSFJTOPTFSWFSMJTUFOJOHPO *1W
TPUIF*1WDPOOFDUJPOBUUFNQUGBJMTJOUIJTDBTF
4UBSUBDPOOFDUJPOBUUFNQUUP
5$14PDLFUOFX
5IFBUUFNQUGBJMT
4FSWFS
Slide 191
Slide 191 text
"OTXFSJOHUIFRVFTUJPO8IZJTUIFUFTUGBJMJOH
4JODFUIFDMJFOULOPXTBO*1WBEESFTT
JUTIPVME
GBMMCBDLBOEJOJUJBUFBDPOOFDUJPOBUUFNQUUPJUJNNFEJBUFMZ
4UBSUBDPOOFDUJPOBUUFNQUUP
5$14PDLFUOFX
5IFBUUFNQUGBJMT
4FSWFS
8BOUUPSFUSZXJUI
Slide 192
Slide 192 text
)PXFWFS
JOSFBMJUZ
$POOFDUJPO"UUFNQU%FMBZTUBSUTBUUIJTQPJOU
BOEJUJTBCPVUUPXBJUNTCFGPSFBUUFNQUJOHUIF
DPOOFDUJPOUPUIF*1WBEESFTT
4UBSUBDPOOFDUJPOBUUFNQUUP
5$14PDLFUOFX
5IFBUUFNQUGBJMT
4FSWFS
"OTXFSJOHUIFRVFTUJPO8IZJTUIFUFTUGBJMJOH
8BJUNT
Slide 193
Slide 193 text
def test_timeout_during_HTTP_session_write
th = nil
TCPServer.open('localhost', 0) {|server|
port = server.addr[1]
conn = Net::HTTP.new('localhost', port)
conn.write_timeout = EnvUtil.apply_timeout_scale(0.01)
conn.open_timeout = EnvUtil.apply_timeout_scale(0.1)
th = Thread.new do
assert_raise(Net::WriteTimeout) do
assert_warning(/Content-Type did not set/) do
conn.post('/', "a"*50_000_000)
end
end
end
assert th.join(EnvUtil.apply_timeout_scale(10))
}
# ...
end
UFTUOFUIUUQUFTU@IUUQSC "TPG13IUUQTHJUIVCDPNSVCZSVCZQVMM
5IJTNFBOTUIBUXIJMFXBJUJOHGPSUIFNT
$POOFDUJPO"UUFNQU%FMBZ
UIFNT
DPOOFDUUJNFPVUXBTCFJOHUSJHHFSFE
DPOOFDUUJNFPVU NT
"OTXFSJOHUIFRVFTUJPO8IZJTUIFUFTUGBJMJOH
5IFNTUJNFPVUFYQJSFTEVSJOHUIFNTXBJU
5IF8JOEPXTTQFDJ
fi
DQBSUTBSFPNJUUFE
Slide 194
Slide 194 text
3FTPMWJOHUIFUJNFPVUJTTVF
if (status > 0) {
/* check for connection */
if (in_progress_fds(arg->connection_attempt_fds_size)) {
for (/* If there are sockets with a confirmed connection state */) {
// Check for connection
}
if (connected_fd >= 0) break;
if (!in_progress_fds(arg->connection_attempt_fds_size)) {
if (/* No address candidates available and finished name resolution */) {
// Raise an error and exit
}
connection_attempt_delay_expires_at = NULL;
user_specified_connect_timeout_at = NULL;
}
}
// ...
FYUTPDLFUJQTPDLFUD
4P
*SFTFUDPOOFDUJPO@BUUFNQU@EFMBZ@BUXIFOBMM
QSFWJPVTDPOOFDUJPOBUUFNQUTIBWFGBJMFE
BMMPXJOHUIF
OFYUDPOOFDUJPOUPTUBSUXJUIPVUXBJUJOHNT
3FTFUDPOOFDUJPO@BUUFNQU@EFMBZ@FYQJSFT@BU
5IFSFJTOPTVDDFTTGVMMZDPOOFDUFETPDLFU
BOEOPTPDLFUDVSSFOUMZBUUFNQUJOHUPDPOOFDU
Slide 195
Slide 195 text
.FSHFE13
XIJDIJODMVEFTUIJT
fi
Y
IUUQTHJUIVCDPNSVCZSVCZQVMM
/PWFNCFS
Slide 196
Slide 196 text
.FSHFE13
XIJDIBMTPJODMVEFTUIJT
fi
Y
/PWFNCFS
IUUQTHJUIVCDPNSVCZSVCZQVMM
Slide 197
Slide 197 text
3VCZ$*HPUJOOFSQFBDF
All CIs passed
Slide 198
Slide 198 text
.FSHFE13
UPTPMWFTBNFQSPCMFNJO4PDLFUUDQ
IUUQTHJUIVCDPNSVCZSVCZQVMM
Slide 199
Slide 199 text
%FDFNCFS
Slide 200
Slide 200 text
"OJTTVFSFQPSUFECZ!KIBXUIPSO
%FDFNCFS
Slide 201
Slide 201 text
"OJTTVFSFQPSUFECZ!KIBXUIPSO
4PDLFUGBTU@GBMMCBDLTFHGBVMUTXIFO
GETBSF '%@4&54*;&
IUUQTCVHTSVCZMBOHPSHJTTVFT
Slide 202
Slide 202 text
"OJTTVFSFQPSUFECZ!KIBXUIPSO
4PDLFUGBTU@GBMMCBDLTFHGBVMUTXIFO
GETBSF '%@4&54*;&
*GUIFOVNCFSPG
fi
MFEFTDSJQUPS GE
PQFOFECZ5$14PDLFUOFXFYDFFET'%@4&54*;&
BTFHNFOUBUJPOGBVMUXJMMPDDVS
5IF
fi
MFEFTDSJQUPS GE
MJNJUTFUCZUIFIPTU
Slide 203
Slide 203 text
"OJTTVFSFQPSUFECZ!KIBXUIPSO
require "socket"
open_fds = []
loop do
file = open(__FILE__)
open_fds << file
break if file.fileno >= 1010
end
TCPServer.open("localhost", 0) do |server|
port = server.addr[1]
sockets = []
50.times do |i|
socket = TCPSocket.open("localhost", port)
p socket
sockets << socket
end
end
IUUQTCVHTSVCZMBOHPSHJTTVFT
3FQSPEVDUJPODPEFCZ!KIBXUIPSO
Slide 204
Slide 204 text
"OJTTVFSFQPSUFECZ!KIBXUIPSO
require "socket"
open_fds = []
loop do
file = open(__FILE__)
open_fds << file
break if file.fileno >= 1010
end
TCPServer.open("localhost", 0) do |server|
port = server.addr[1]
sockets = []
50.times do |i|
socket = TCPSocket.open("localhost", port)
p socket
sockets << socket
end
end
IUUQTCVHTSVCZMBOHPSHJTTVFT
3FQSPEVDUJPODPEFCZ!KIBXUIPSO
0QFOFOPVHI
fi
MFTJOBEWBODFTPUIBU
UIFUPUBMOVNCFSPGGETDPNFTDMPTF
UPUIFTZTUFN`T'%@4&54*;&MJNJU
Slide 205
Slide 205 text
"OJTTVFSFQPSUFECZ!KIBXUIPSO
require "socket"
open_fds = []
loop do
file = open(__FILE__)
open_fds << file
break if file.fileno >= 1010
end
TCPServer.open("localhost", 0) do |server|
port = server.addr[1]
sockets = []
50.times do |i|
socket = TCPSocket.open("localhost", port)
p socket
sockets << socket
end
end
IUUQTCVHTSVCZMBOHPSHJTTVFT
3FQSPEVDUJPODPEFCZ!KIBXUIPSO
4UBSUBTFSWFS
Slide 206
Slide 206 text
"OJTTVFSFQPSUFECZ!KIBXUIPSO
require "socket"
open_fds = []
loop do
file = open(__FILE__)
open_fds << file
break if file.fileno >= 1010
end
TCPServer.open("localhost", 0) do |server|
port = server.addr[1]
sockets = []
50.times do |i|
socket = TCPSocket.open("localhost", port)
p socket
sockets << socket
end
end
IUUQTCVHTSVCZMBOHPSHJTTVFT
3FQSPEVDUJPODPEFCZ!KIBXUIPSO
4UBSUTFWFSBMOFXDPOOFDUJPOTUP
UIFTFSWFSVTJOH5$14PDLFUPQFO
5$14PDLFUOFX
Slide 207
Slide 207 text
"OJTTVFSFQPSUFECZ!KIBXUIPSO
require "socket"
open_fds = []
loop do
file = open(__FILE__)
open_fds << file
break if file.fileno >= 1010
end
TCPServer.open("localhost", 0) do |server|
port = server.addr[1]
sockets = []
50.times do |i|
socket = TCPSocket.open("localhost", port)
p socket
sockets << socket
end
end
IUUQTCVHTSVCZMBOHPSHJTTVFT
3FQSPEVDUJPODPEFCZ!KIBXUIPSO
8IFOUIFUPUBMOVNCFSPG
BMSFBEZPQFOFE
fi
MFT UIFTPDLFUT
PQFOFECZ5$14PDLFUOFX
SFBDIFTFYDFFET'%@4&54*;&
4UBSUTFWFSBMOFXDPOOFDUJPOTUP
UIFTFSWFSVTJOH5$14PDLFUPQFO
5$14PDLFUOFX
Slide 208
Slide 208 text
"OJTTVFSFQPSUFECZ!KIBXUIPSO
$ ulimit -n 2048
$ ruby test.rb
#
#
#
...
=================================================================
==3180778==ERROR: AddressSanitizer: stack-buffer-overflow
on address 0x7ae35aadc580 at pc 0x7ae35b1b7449 bp 0x7fffc9af1af0 sp 0x7fffc9af1ae8
READ of size 8 at 0x7ae35aadc580 thread T0
#0 0x7ae35b1b7448 in init_fast_fallback_inetsock_internal
/.../ruby/ext/socket/ipsocket.c:912:17
#1 0x60462ff14879 in rb_ensure
/.../ruby/eval.c:1053:18
#2 0x7ae35b1b41b9 in rsock_init_inetsock
/.../ruby/ext/socket/ipsocket.c:1315:20
#3 0x7ae35b1bae9a in tcp_init
/.../ruby/ext/socket/tcpsocket.c:91:12
...
IUUQTCVHTSVCZMBOHPSHJTTVFT
A segmentation fault occurs!!
Slide 209
Slide 209 text
"GVODUJPOPGUIFDBVTFPGUIFQSPCMFN
static void *
wait_fast_fallback(void *ptr)
{
struct wait_fast_fallback_arg *arg = (struct wait_fast_fallback_arg *)ptr;
int status;
status = select(arg->nfds, arg->readfds, arg->writefds, NULL, arg->delay);
arg->status = status;
if (errno == EINTR) *arg->cancelled = true;
return 0;
}
5IFDBVTFPGUIJTJTTVFXBT
UIFGVODUJPOQSFWJPVTMZJOUSPEVDFE
Slide 210
Slide 210 text
"GVODUJPOPGUIFDBVTFPGUIFQSPCMFN
static void *
wait_fast_fallback(void *ptr)
{
struct wait_fast_fallback_arg *arg = (struct wait_fast_fallback_arg *)ptr;
int status;
status = select(arg->nfds, arg->readfds, arg->writefds, NULL, arg->delay);
arg->status = status;
if (errno == EINTR) *arg->cancelled = true;
return 0;
}
*OTJEFUIJTGVODUJPO
DBMMTFMFDU
XBJUGPSFJUIFS
OBNFSFTPMVUJPOPSBDPOOFDUJPOUPDPNQMFUF
CZ
NPOJUPSJOHCPUIUIFQJQFXBJUJOHGPSOBNFSFTPMVUJPO
OPUJ
fi
DBUJPOTBOEUIFTPDLFUTBUUFNQUJOHUPDPOOFDU
5IFQJQFXBJUJOHGPSOBNFSFTPMVUJPOOPUJ
fi
DBUJPOT 5IFTPDLFUTXBJUJOHUPDPOOFDU
Slide 211
Slide 211 text
static void *
wait_fast_fallback(void *ptr)
{
struct wait_fast_fallback_arg *arg = (struct wait_fast_fallback_arg *)ptr;
int status;
status = select(arg->nfds, arg->readfds, arg->writefds, NULL, arg->delay);
arg->status = status;
if (errno == EINTR) *arg->cancelled = true;
return 0;
}
"GVODUJPOPGUIFDBVTFPGUIFQSPCMFN
*OBTFOTF
TFMFDU
JTUIFNPTUJNQPSUBOUTZTUFNDBMM
XIFOJUDPNFTUPJNQMFNFOUJOHUIF)&WTQFDJ
fi
DBUJPO
5IFNPTUJNQPSUBOUTZTUFNDBMMGPS)&W
Slide 212
Slide 212 text
static void *
wait_fast_fallback(void *ptr)
{
struct wait_fast_fallback_arg *arg = (struct wait_fast_fallback_arg *)ptr;
int status;
status = select(arg->nfds, arg->readfds, arg->writefds, NULL, arg->delay);
arg->status = status;
if (errno == EINTR) *arg->cancelled = true;
return 0;
}
"GVODUJPOPGUIFDBVTFPGUIFQSPCMFN
5IFQSPCMFNJTUIBUTFMFDU
DBOOPUNPOJUPS
GETOVNCFSHSFBUFSUIBO'%@4&54*;&
/PUTVQQPSUFECFZPOE'%@4&54*;&
Slide 213
Slide 213 text
TFMFDU
-JOVYNBOVBMQBHF
IUUQTNBOPSHMJOVYNBOQBHFTNBOTFMFDUIUNM
5IJTMJNJUBUJPOJTBDUVBMMZEPDVNFOUFEJOUIFNBOVBM
GPSTFMFDU
'PSFYBNQMF
IFSF`TUIFSFMFWBOUTFDUJPO
GSPNUIFNBOPG-JOVY
DESCRIPTION
WARNING: select() can monitor only
fi
le descriptors numbers that
are less than FD_SETSIZE (1024)—an unreasonably low limit for many
modern applications—and this limitation will not change. All
modern applications should instead use poll(2) or epoll(7), which
do not su
ff
er this limitation.
Slide 214
Slide 214 text
TFMFDU
-JOVYNBOVBMQBHF
IUUQTNBOPSHMJOVYNBOQBHFTNBOTFMFDUIUNM
DESCRIPTION
WARNING: select() can monitor only
fi
le descriptors numbers that
are less than FD_SETSIZE (1024)—an unreasonably low limit for many
modern applications—and this limitation will not change. All
modern applications should instead use poll(2) or epoll(7), which
do not su
ff
er this limitation.
Slide 215
Slide 215 text
TFMFDU
-JOVYNBOVBMQBHF
IUUQTNBOPSHMJOVYNBOQBHFTNBOTFMFDUIUNM
NOTES
The following header also provides the fd_set type: .
An fd_set is a
fi
xed size bu
ff
er. Executing FD_CLR() or FD_SET()
with a value of fd that is negative or is equal to or larger than
FD_SETSIZE will result in unde
fi
ned behavior. Moreover, POSIX
requires fd to be a valid
fi
le descriptor.
'%@$-3
BOE'%@4&5
BSFNBDSPT
UIBUBSFFYFDVUFECFGPSFDBMMJOHTFMFDU
Slide 216
Slide 216 text
TFMFDU
-JOVYNBOVBMQBHF
IUUQTNBOPSHMJOVYNBOQBHFTNBOTFMFDUIUNM
NOTES
The following header also provides the fd_set type: .
An fd_set is a
fi
xed size bu
ff
er. Executing FD_CLR() or FD_SET()
with a value of fd that is negative or is equal to or larger than
FD_SETSIZE will result in unde
fi
ned behavior. Moreover, POSIX
requires fd to be a valid
fi
le descriptor.
5IJTJTBQSPCMFN
Slide 217
Slide 217 text
5IFTFMFDU
QSPCMFN
5PTPMWFUIJTJTTVF
XFOFFEUPQFSGPSNUIFQSPDFTTJOHDVSSFOUMZEPOF
CZTFMFDU
VTJOHBXBZPUIFSUIBOTFMFDU
Slide 218
Slide 218 text
TFMFDU
-JOVYNBOVBMQBHF
IUUQTNBOPSHMJOVYNBOQBHFTNBOTFMFDUIUNM
5IFNBOPG-JOVYSFDPNNFOETVTJOH
FJUIFSQPMM
PSFQPMM
GPSUIJTQVSQPTF
DESCRIPTION
WARNING: select() can monitor only
fi
le descriptors numbers that
are less than FD_SETSIZE (1024)—an unreasonably low limit for many
modern applications—and this limitation will not change. All
modern applications should instead use poll(2) or epoll(7), which
do not su
ff
er this limitation.
Slide 219
Slide 219 text
TFMFDU
-JOVYNBOVBMQBHF
DESCRIPTION
WARNING: select() can monitor only
fi
le descriptors numbers that
are less than FD_SETSIZE (1024)—an unreasonably low limit for many
modern applications—and this limitation will not change. All
modern applications should instead use poll(2) or epoll(7), which
do not su
ff
er this limitation.
IUUQTNBOPSHMJOVYNBOQBHFTNBOTFMFDUIUNM
FQPMM
JTBO"1*TQFDJ
fi
DUP-JOVYFOWJSPONFOUT
4JODF5$14PDLFUOFXXJUI)&WJTJOUFOEFEUPXPSLPO
BMMFOWJSPONFOUTXIFSFQUISFBETBSFBWBJMBCMF
DIPPTJOH
QPMM
JTUIFNPSFSFBTPOBCMFPQUJPOJOUIJTDBTF
Slide 220
Slide 220 text
4PMWJOHUIFTFMFDU
QSPCMFN
*MPPLFEJOUPXIFUIFS
TFMFDU
DPVMECFSFQMBDFEXJUIQPMM
CZFYBNJOJOH
UIFEJ
ff
FSFODFTCFUXFFOUIFTFTZTUFNDBMMT
"TBSFTVMU
*GPVOEUIBUUIFJSEJ
ff
FSFODFTBSFBTGPMMPXT
Slide 221
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5IFEJ
ff
FSFODFTCFUXFFOTFMFDU
BOEQPMM
'VODUJPOTJHOBUVSFT
int poll(
struct pollfd *fds,
nfds_t nfds,
int timeout
);
int select(
int nfds,
fd_set *readfds,
fd_set *writefds,
fd_set *exceptfds,
struct timeval *utimeout
);
Slide 222
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5IFEJ
ff
FSFODFTCFUXFFOTFMFDU
BOEQPMM
5ZQFTPGUBSHFUTUIFZDBONPOJUPS
int poll(
struct pollfd *fds,
nfds_t nfds,
int timeout
);
int select(
int nfds,
fd_set *readfds,
fd_set *writefds,
fd_set *exceptfds,
struct timeval *utimeout
);
+VTUTPNFGE@TFUT
struct pollfd {
int fd;
short events;
short revents:
};
Slide 223
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5IFEJ
ff
FSFODFTCFUXFFOTFMFDU
BOEQPMM
5ZQFTPGFWFOUTUIFZDBONPOJUPS
ɾPOLLIN
ɾPOLLOUT
ɾPOLLERR
ɾPOLLHUP
ɾPOLNVAL
ɾreadfds
ɾwritefds
ɾexceptfds
int poll(
struct pollfd *fds,
nfds_t nfds,
int timeout
);
int select(
int nfds,
fd_set *readfds,
fd_set *writefds,
fd_set *exceptfds,
struct timeval *utimeout
);
Slide 224
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5IFEJ
ff
FSFODFTCFUXFFOTFMFDU
BOEQPMM
)PXUPTQFDJGZUIFGETUPNPOJUPS
int fd;
fd_set set;
FD_ZERO(&set);
FD_SET(fd, &set);
int fd;
struct pollfd fds[1];
fds[0].fd = fd;
fds[0].events = POLLIN | POLLOUT;
int poll(
struct pollfd *fds,
nfds_t nfds,
int timeout
);
int select(
int nfds,
fd_set *readfds,
fd_set *writefds,
fd_set *exceptfds,
struct timeval *utimeout
);
Slide 225
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5IFEJ
ff
FSFODFTCFUXFFOTFMFDU
BOEQPMM
5JNFPVUSFTPMVUJPO
NJMMJTFDPOET
struct timeval {
time_t tv_sec;
suseconds_t tv_usec
};
int poll(
struct pollfd *fds,
nfds_t nfds,
int timeout
);
int select(
int nfds,
fd_set *readfds,
fd_set *writefds,
fd_set *exceptfds,
struct timeval *utimeout
);
Slide 226
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5IFEJ
ff
FSFODFTCFUXFFOTFMFDU
BOEQPMM
$PODMVTJPO
1SFUUZNVDIFWFSZUIJOHJTEJ
ff
FSFOU
Slide 227
Slide 227 text
5IFEJ
ff
FSFODFTCFUXFFOTFMFDU
BOEQPMM
$PODMVTJPO
1SFUUZNVDIFWFSZUIJOHJTEJ
ff
FSFOU
➡︎
4JHOJ
fi
DBOUBNPVOUPGDPEFXJMMOFFEUPCFSFXSJUUFO
ɹ5IFQSPCMFNJT
JU`TBMSFBEZ%FDFNCFSUI
ɹ -FTTUIBOEBZTMFGUVOUJMUIFSFMFBTFPG3VCZ
*`EMJLFUPIBWFUIFDIBOHFTNFSHFEBOEUIFOMFU3VCZ$*
SVOGPSBEFDFOUBNPVOUPGUJNFUPNPOJUPSUIFSFTVMUT
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5IJTJTTVFEPFTOPUPDDVSXJUI4PDLFUUDQ
BTJNQMFNFOUFEJO3VCZ
)PXJTJUIBOEMFEJO4PDLFUUDQ
Slide 229
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class Socket
# ...
def self.tcp(...)
# ...
hostname_resolved, writable_sockets, except_sockets = IO.select(
hostname_resolution_notifier,
connecting_sockets.keys,
is_windows_environment ? connecting_sockets.keys : nil,
second_to_timeout(current_clock_time, ends_at),
)
# ...
end
# ...
end
*O4PDLFUUDQ
*0TFMFDUJTVTFEUPXBJUGPS
OBNFSFTPMVUJPOBOEDPOOFDUJPODPNQMFUJPO
4PIPXJTJUIBOEMFEJO4PDLFUUDQ
)PXJTJUIBOEMFEJO4PDLFUUDQ
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void
Init_IO(void)
{
// ...
rb_cIO = rb_define_class("IO", rb_cObject);
// ...
rb_define_singleton_method(rb_cIO, "select", rb_f_select, -1);
// ...
}
5IFJOUFSOBMJNQMFNFOUBUJPOPG*0TFMFDU
JPD
*GPVOEUIBU*0TFMFDUJTJNQMFNFOUFEJOUFSOBMMZ
JO3VCZBTSC@G@TFMFDU
%F
fi
OFSC@G@TFMFDUBT*0TFMFDU
%F
fi
OF*0DMBTT
Slide 231
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$BMM4UBDLPG*0TFMFDU
*0TFMFDU
➡︎
SC@G@TFMFDU
➡︎
SC@FOTVSF
➡︎
TFMFDU@DBMM
➡︎
TFMFDU@JOUFSOBM
➡︎
SC@UISFBE@GE@TFMFDU
➡︎
TFMFDU@FOE
5IFJOUFSOBMJNQMFNFOUBUJPOPG*0TFMFDU
5IJTGVODUJPODBMMTSC@UISFBE@GE@TFMFDU
BOJOUFSOBM3VCZGVODUJPO
Slide 232
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int
rb_thread_fd_select(int max, rb_fdset_t * read, rb_fdset_t * write,
rb_fdset_t * except, struct timeval *timeout)
{
// ...
BLOCKING_REGION(set->th, {
struct timeval tv;
if (!RUBY_VM_INTERRUPTED(set->th->ec)) {
result = native_fd_select(set->max,
set->rset, set->wset, set->eset,
rb_hrtime2timeval(&tv, to), set->th);
if (result < 0) lerrno = errno;
}
}, ubf_select, set->th, TRUE);
// ...
}
SC@UISFBE@GE@TFMFDUUIFODBMMTOBUJWF@GE@TFMFDU
5IFJOUFSOBMJNQMFNFOUBUJPOPG*0TFMFDU
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5IFJOUFSOBMJNQMFNFOUBUJPOPG*0TFMFDU
ɾUISFBE@QUISFBED
5IFEF
fi
OJUJPOPGOBUJWF@GE@TFMFDUEJ
ff
FST
EFQFOEJOHPOXIFUIFSUIFFOWJSPONFOUTVQQPSUT
QUISFBETPSJTSVOOJOHPO8JOEPXT
static int
native_fd_select(int n, rb_fdset_t *readfds, rb_fdset_t *writefds,
rb_fdset_t *exceptfds, struct timeval *timeout,
rb_thread_t *th)
static int
native_fd_select(int n, rb_fdset_t *readfds, rb_fdset_t *writefds,
rb_fdset_t *exceptfds, struct timeval *timeout,
rb_thread_t *th)
ɾUISFBE@XJOD
Slide 234
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5IFJOUFSOBMJNQMFNFOUBUJPOPG*0TFMFDU
static int
native_fd_select(int n, rb_fdset_t *readfds, rb_fdset_t *writefds,
rb_fdset_t *exceptfds, struct timeval *timeout,
rb_thread_t *th)
{
return rb_fd_select(n, readfds, writefds, exceptfds, timeout);
}
UISFBE@QUISFBED
*OFOWJSPONFOUTXJUIQUISFBET
JUJOUFSOBMMZDBMMTSC@GE@TFMFDU
Slide 235
Slide 235 text
ɾJODMVEFSVCZJOUFSOBMJOUFSOTFMFDUMBSHFTJ[FI
5IFJOUFSOBMJNQMFNFOUBUJPOPG*0TFMFDU
SC@GE@TFMFDUBMTPIBTEJ
ff
FSFOUEF
fi
OJUJPOTEFQFOEJOH
PO04'PSDFSUBJOWFSTJPOTPG04
JUJTEF
fi
OFEJO
MBSHFTJ[FI GPSPUIFST
JUJTEF
fi
OFEJOQPTJYI
int rb_fd_select(int nfds, rb_fdset_t *rfds, rb_fdset_t *wfds,
rb_fdset_t *efds, struct timeval *timeout)
#define rb_fd_select select
ɾJODMVEFSVCZJOUFSOBMJOUFSOTFMFDUQPTJYI
Slide 236
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5BSHFU04WFSTJPOTGPSMBSHFTJ[FI
/**
* ...
*
* - Linux 2.2.12 (?)
*
* - NetBSD 1.2 (src/sys/kern/sys_generic.c:1.25)
* ...
* - FreeBSD 2.2 (src/sys/kern/sys_generic.c:1.19)
*
* - OpenBSD 2.0 (src/sys/kern/sys_generic.c:1.4)
* ...
* - Solaris 8 has `select_large_fdset`
*
* - Mac OS X 10.7 (Lion)
* ...
*/
)FSFBSFUIFMJTUPG04WFSTJPOT
XIFSFUIFMBSHFTJ[FIEF
fi
OJUJPOJTVTFE
JODMVEFSVCZJOUFSOBMJOUFSOTFMFDUMBSHFTJ[FI
Slide 237
Slide 237 text
/**
* ...
*
* - Linux 2.2.12 (?)
*
* - NetBSD 1.2 (src/sys/kern/sys_generic.c:1.25)
* ...
* - FreeBSD 2.2 (src/sys/kern/sys_generic.c:1.19)
*
* - OpenBSD 2.0 (src/sys/kern/sys_generic.c:1.4)
* ...
* - Solaris 8 has `select_large_fdset`
*
* - Mac OS X 10.7 (Lion)
* ...
*/
'PSNPTUNPEFSO
DPNNPOMZVTFE04WFSTJPOT
UIFEF
fi
OJUJPOJOMBSHFTJ[FIJTUIFPOFUIBUHFUTVTFE
5BSHFU04WFSTJPOTGPSMBSHFTJ[FI
JODMVEFSVCZJOUFSOBMJOUFSOTFMFDUMBSHFTJ[FI
Slide 238
Slide 238 text
/**
* ...
*
* Several Unix platforms support file descriptors bigger than FD_SETSIZE in
* `select(2)` system call.
*
* ... (The target OS versions) ...
*
* When `fd_set` is not big enough to hold big file descriptors, it should be
* allocated dynamically. Note that this assumes `fd_set` is structured as
* bitmap.
*
* `rb_fd_init` allocates the memory.
* `rb_fd_term` frees the memory.
* `rb_fd_set` may re-allocate bitmap.
*
* So `rb_fd_set` doesn't reject file descriptors bigger than `FD_SETSIZE`.
*/
8IBUMBSHFTJ[FIUFMMT
)FSF`TXIBU`TXSJUUFOJOMBSHFTJ[FI
JODMVEFSVCZJOUFSOBMJOUFSOTFMFDUMBSHFTJ[FI
Slide 239
Slide 239 text
/**
* ...
*
* Several Unix platforms support file descriptors bigger than FD_SETSIZE in
* `select(2)` system call.
*
* ... (The target OS versions) ...
*
* When `fd_set` is not big enough to hold big file descriptors, it should be
* allocated dynamically. Note that this assumes `fd_set` is structured as
* bitmap.
*
* `rb_fd_init` allocates the memory.
* `rb_fd_term` frees the memory.
* `rb_fd_set` may re-allocate bitmap.
*
* So `rb_fd_set` doesn't reject file descriptors bigger than `FD_SETSIZE`.
*/
8IBUMBSHFTJ[FIUFMMT
JODMVEFSVCZJOUFSOBMJOUFSOTFMFDUMBSHFTJ[FI
Slide 240
Slide 240 text
/**
* ...
*
* Several Unix platforms support file descriptors bigger than FD_SETSIZE in
* `select(2)` system call.
*
* ... (The target OS versions) ...
*
* When `fd_set` is not big enough to hold big file descriptors, it should be
* allocated dynamically. Note that this assumes `fd_set` is structured as
* bitmap.
*
* `rb_fd_init` allocates the memory.
* `rb_fd_term` frees the memory.
* `rb_fd_set` may re-allocate bitmap.
*
* So `rb_fd_set` doesn't reject file descriptors bigger than `FD_SETSIZE`.
*/
JODMVEFSVCZJOUFSOBMJOUFSOTFMFDUMBSHFTJ[FI
8IBUMBSHFTJ[FIUFMMT
GE@TFUTUPSFTUIF
fi
MFEFTDSJQUPSTUPCFNPOJUPSFE
Slide 241
Slide 241 text
5IFJNQMFNFOUBUJPOPGSC@GE@TFMFDU
int rb_fd_select(int n, rb_fdset_t *readfds, rb_fdset_t *writefds,
rb_fdset_t *exceptfds, struct timeval *timeout)
{
fd_set *r = NULL, *w = NULL, *e = NULL;
if (readfds) {
rb_fd_resize(n - 1, readfds); r = rb_fd_ptr(readfds);
}
if (writefds) {
rb_fd_resize(n - 1, writefds); w = rb_fd_ptr(writefds);
}
if (exceptfds) {
rb_fd_resize(n - 1, exceptfds); e = rb_fd_ptr(exceptfds);
}
return select(n, r, w, e, timeout);
}
UISFBED
Slide 242
Slide 242 text
int rb_fd_select(int n, rb_fdset_t *readfds, rb_fdset_t *writefds,
rb_fdset_t *exceptfds, struct timeval *timeout)
{
fd_set *r = NULL, *w = NULL, *e = NULL;
if (readfds) {
rb_fd_resize(n - 1, readfds); r = rb_fd_ptr(readfds);
}
if (writefds) {
rb_fd_resize(n - 1, writefds); w = rb_fd_ptr(writefds);
}
if (exceptfds) {
rb_fd_resize(n - 1, exceptfds); e = rb_fd_ptr(exceptfds);
}
return select(n, r, w, e, timeout);
}
5IJTGVODUJPONBLFTVTFPGUIFTUSVDUSC@GETFU@U
5IFJNQMFNFOUBUJPOPGSC@GE@TFMFDU
TUSVDUSC@GETFU@UTBSFVTFE
UISFBED
Slide 243
Slide 243 text
TUSVDUSC@GETFU@U
/**
* The data structure which wraps the fd_set bitmap used by select(2). This
* allows Ruby to use FD sets larger than that allowed by historic limitations
* on modern platforms.
*/
typedef struct {
int maxfd; /**< Maximum allowed number of FDs. */
fd_set *fdset; /**< File descriptors buffer */
} rb_fdset_t;
JODMVEFSVCZJOUFSOBMJOUFSOTFMFDUMBSHFTJ[FI
Slide 244
Slide 244 text
/**
* The data structure which wraps the fd_set bitmap used by select(2). This
* allows Ruby to use FD sets larger than that allowed by historic limitations
* on modern platforms.
*/
typedef struct {
int maxfd; /**< Maximum allowed number of FDs. */
fd_set *fdset; /**< File descriptors buffer */
} rb_fdset_t;
TUSVDUSC@GETFU@U
TUSVDUSC@GETFU@UXSBQTUIFGE@TFU
UPCFQBTTFEUPTFMFDU
5IFGE@TFUUPCFQBTTFEUPTFMFDU
JODMVEFSVCZJOUFSOBMJOUFSOTFMFDUMBSHFTJ[FI
Slide 245
Slide 245 text
/**
* The data structure which wraps the fd_set bitmap used by select(2). This
* allows Ruby to use FD sets larger than that allowed by historic limitations
* on modern platforms.
*/
typedef struct {
int maxfd; /**< Maximum allowed number of FDs. */
fd_set *fdset; /**< File descriptors buffer */
} rb_fdset_t;
"OEJUIBTBDPNNFOU
JODMVEFSVCZJOUFSOBMJOUFSOTFMFDUMBSHFTJ[FI
TUSVDUSC@GETFU@U
Slide 246
Slide 246 text
5IFJNQMFNFOUBUJPOPGSC@GE@TFMFDU
int rb_fd_select(int n, rb_fdset_t *readfds, rb_fdset_t *writefds,
rb_fdset_t *exceptfds, struct timeval *timeout)
{
fd_set *r = NULL, *w = NULL, *e = NULL;
if (readfds) {
rb_fd_resize(n - 1, readfds); r = rb_fd_ptr(readfds);
}
if (writefds) {
rb_fd_resize(n - 1, writefds); w = rb_fd_ptr(writefds);
}
if (exceptfds) {
rb_fd_resize(n - 1, exceptfds); e = rb_fd_ptr(exceptfds);
}
return select(n, r, w, e, timeout);
}
SC@GE@TFMFDUEZOBNJDBMMZBMMPDBUFTPSFYQBOETUIF
CJUNBQSFHJPOTGPSUIFNPOJUPSFEGE@TFU
BDDPSEJOHUPUIFNBYJNVNGEOVNCFS
UISFBED
Slide 247
Slide 247 text
5IFJNQMFNFOUBUJPOPGSC@GE@TFMFDU
int rb_fd_select(int n, rb_fdset_t *readfds, rb_fdset_t *writefds,
rb_fdset_t *exceptfds, struct timeval *timeout)
{
fd_set *r = NULL, *w = NULL, *e = NULL;
if (readfds) {
rb_fd_resize(n - 1, readfds); r = rb_fd_ptr(readfds);
}
if (writefds) {
rb_fd_resize(n - 1, writefds); w = rb_fd_ptr(writefds);
}
if (exceptfds) {
rb_fd_resize(n - 1, exceptfds); e = rb_fd_ptr(exceptfds);
}
return select(n, r, w, e, timeout);
}
BOEQBTTFTQPJOUFSTUPUIFTFSFHJPOTUPTFMFDU
UIFSFCZFOBCMJOHTVQQPSUGPS
fi
MFEFTDSJQUPST
UIBUFYDFFE'%@4&54*;&
$BMMTFMFDU
XJUIUIFQPJOUFST
UISFBED
Slide 248
Slide 248 text
$BMM4UBDLPG*0TFMFDU
*0TFMFDU
➡︎
SC@G@TFMFDU
➡︎
SC@FOTVSF
➡︎
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➡︎
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➡︎
SC@UISFBE@GE@TFMFDU
➡︎
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➡︎
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This seems like a good fit!
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Socket.tcp(host, port, fast_fallback: false) # Disable
TCPSocket.new(host, port, fast_fallback: false) # Disable
Socket.tcp_fast_fallback = false # Disable
TCP_NO_FAST_FALLBACK = 1 # Disable
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5IFPVUDPNFPGJOUSPEVDJOH)&W
require "rubydns"
RubyDNS.run_server([[:udp, "0.0.0.0", 53], [:udp, "::", 53]]) do
match("example.com", Resolv::DNS::Resource::IN::A) do |tx|
tx.respond!("127.0.0.1")
end
match("example.com", Resolv::DNS::Resource::IN::AAAA) do |tx|
sleep Float::INFINITY
tx.respond!("::1")
end
otherwise do |query|
tx.fail!(:NXDomain)
end
end
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$ time ruby -rsocket -e "
> p TCPSocket.new('example.com', 4567, fast_fallback: false)
> "
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fi
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$ time ruby -rsocket -e "
> p TCPSocket.new('example.com', 4567, fast_fallback: false)
> "
#
0.06s user 0.01s system 0% cpu 15.086 total
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$ time ruby -rsocket -e "
> p TCPSocket.new('example.com', 4567, fast_fallback: false)
> "
#
0.06s user 0.01s system 0% cpu 15.086 total
$ time ruby -rsocket -e "
> p TCPSocket.new('example.com', 4567, fast_fallback: true)
> "
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$ time ruby -rsocket -e "
> p TCPSocket.new('example.com', 4567, fast_fallback: false)
> "
#
0.06s user 0.01s system 0% cpu 15.086 total
$ time ruby -rsocket -e "
> p TCPSocket.new('example.com', 4567, fast_fallback: true)
> "
#
0.05s user 0.01s system 52% cpu 0.114 total
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132.3x faster!
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require "socket"
require "benchmark"
hostname = "www.ruby-lang.org"
port = 80
Benchmark.bmbm do |x|
x.report("fast_fallback: false") do
100.times { TCPSocket.new(hostname, port, fast_fallback: false).close }
end
x.report("fast_fallback: true") do
100.times { TCPSocket.new(hostname, port, fast_fallback: true).close }
end
end
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*NQBDUPOQFSGPSNBODF
$ time ruby benchmark.rb
Rehearsal --------------------------------------------------------
fast_fallback: false 0.014033 0.078984 0.093017 ( 1.413951)
fast_fallback: true 0.017588 0.097045 0.114633 ( 1.460664)
----------------------------------------------- total: 0.207650sec
user system total real
fast_fallback: false 0.018392 0.110852 0.129244 ( 1.466014)
fast_fallback: true 0.020891 0.124054 0.144945 ( 1.473816)
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Socket.tcp(host, port, fast_fallback: false) # Disable
TCPSocket.new(host, port, fast_fallback: false) # Disable
Socket.tcp_fast_fallback = false # Disable
TCP_NO_FAST_FALLBACK = 1 # Disable
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