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Deal with unsupported sockopts. Fixes #1241

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Seems that the ability to extract the TCP_INFO is a conditional
capability, with it failing in some common situations. So if it works,
great, but as soon as it stops working, disable it entirely.
This commit is contained in:
Evan Phoenix 2017-03-14 09:09:39 -07:00
parent 5bac8d5971
commit 604885b1fe
1 changed files with 14 additions and 4 deletions
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18
lib/puma/server.rb
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@ -78,6 +78,8 @@ module Puma
ENV['RACK_ENV'] ||= "development"
@mode = :http
@precheck_closing = true
end
attr_accessor :binder, :leak_stack_on_error
@ -121,10 +123,18 @@ module Puma
def closed_socket?(socket)
return false unless socket.kind_of? TCPSocket
tcp_info = socket.getsockopt(Socket::SOL_TCP, Socket::TCP_INFO)
state = tcp_info.unpack(UNPACK_TCP_STATE_FROM_TCP_INFO)[0]
# TIME_WAIT: 6, CLOSE: 7, CLOSE_WAIT: 8, LAST_ACK: 9, CLOSING: 11
(state >= 6 && state <= 9) || state == 11
return false unless @precheck_closing
begin
tcp_info = socket.getsockopt(Socket::SOL_TCP, Socket::TCP_INFO)
rescue IOError, SystemCallError
@precheck_closing = false
false
else
state = tcp_info.unpack(UNPACK_TCP_STATE_FROM_TCP_INFO)[0]
# TIME_WAIT: 6, CLOSE: 7, CLOSE_WAIT: 8, LAST_ACK: 9, CLOSING: 11
(state >= 6 && state <= 9) || state == 11
end
end
else
def cork_socket(socket)