Bug #19609: net/http ignores open_timeout, read_timeout on Windows

• Status: Open
• Assignee: -
• Target version: -
• ruby -v: ruby 3.2.2 (2023-03-30 revision e51014f9c0) [x64-mingw-ucrt]
• Backport: 3.0: UNKNOWN, 3.1: UNKNOWN, 3.2: UNKNOWN

[inversion (Yura Babak)]

This small sample works fine on Linux (it takes 2 seconds to finish) but on Windows, it always fails with a timeout after some magical 21 seconds.

require 'net/http'

uri = URI 'http://1.2.3.4'
http = Net::HTTP::new(uri.host, uri.port)
http.open_timeout = 2
http.read_timeout = 2

time_start = Time.now
begin
	response = http.get uri
rescue Exception
	puts $!.inspect
end
time_total = Time.now - time_start

puts time_total

Strange that I have installed different versions and the results are not consistent:

ruby 3.2.2 (2023-03-30 revision e51014f9c0) [x64-mingw-ucrt]:

#<Net::OpenTimeout: Failed to open TCP connection to 1.2.3.4:80 (execution expired)>
21.0494375

ruby 3.1.2p20 (2022-04-12 revision 4491bb740a) [x64-mingw-ucrt]:

#<Net::OpenTimeout: Failed to open TCP connection to 1.2.3.4:80 (A connection attempt failed because the connected party did not properly respond after a period of time, or established connection failed because connected host has failed to respond. - user specified timeout)>
2.0190419   # — works as expected

ruby 3.0.1p64 (2021-04-05 revision 0fb782ee38) [x64-mingw32]:

#<Net::OpenTimeout: execution expired>
21.0423962