* [ruby-core:95515] [Ruby master Bug#16277] UNIXServer#listen fails with Errno::EADDRINUSE error under Windows 10 / WSL Ubuntu 18.04
[not found] <redmine.issue-16277.20191023202026@ruby-lang.org>
@ 2019-10-23 20:20 ` brad
2019-10-24 1:49 ` [ruby-core:95522] " shyouhei
2019-10-25 15:39 ` [ruby-core:95548] " Greg.mpls
2 siblings, 0 replies; 3+ messages in thread
From: brad @ 2019-10-23 20:20 UTC (permalink / raw)
To: ruby-core
Issue #16277 has been reported by bradland (Brad Landers).
----------------------------------------
Bug #16277: UNIXServer#listen fails with Errno::EADDRINUSE error under Windows 10 / WSL Ubuntu 18.04
https://bugs.ruby-lang.org/issues/16277
* Author: bradland (Brad Landers)
* Status: Open
* Priority: Normal
* Assignee:
* Target version:
* ruby -v: ruby 2.6.5p114 (2019-10-01 revision 67812) [x86_64-linux-gnu]
* Backport: 2.5: UNKNOWN, 2.6: UNKNOWN
----------------------------------------
When running the following script under Windows 10 / WSL Ubuntu 18.04, an Errno::EADDRINUSE error is thrown. Expected result is that the script would run and simply exit.
``` ruby
#!/usr/bin/env ruby
# This script establishes a UNIX server socket.
#
# Expected result: Script should run and immediately exit.
#
# Actual result: Script fails with Errno::EADDRINUSE error.
#
# Environment: Windows 10 Pro, WSL, Ubuntu 18.04.2, ruby 2.6.5p114 (2019-10-01 revision 67812) [x86_64-linux-gnu]
#
# To reproduce: Create a tmp folder, copy this script there, and execute.
require 'socket'
path = File.expand_path('listen.sock')
backlog = 5
s = UNIXServer.new(path)
if backlog
s.listen backlog
else
s.listen
end
File.delete(path) if File.exists?(path)
```
The bug was discoverd as part of Puma (gem) issue #1521: https://github.com/puma/puma/issues/1521.
--
https://bugs.ruby-lang.org/
^ permalink raw reply [flat|nested] 3+ messages in thread
* [ruby-core:95522] [Ruby master Bug#16277] UNIXServer#listen fails with Errno::EADDRINUSE error under Windows 10 / WSL Ubuntu 18.04
[not found] <redmine.issue-16277.20191023202026@ruby-lang.org>
2019-10-23 20:20 ` [ruby-core:95515] [Ruby master Bug#16277] UNIXServer#listen fails with Errno::EADDRINUSE error under Windows 10 / WSL Ubuntu 18.04 brad
@ 2019-10-24 1:49 ` shyouhei
2019-10-25 15:39 ` [ruby-core:95548] " Greg.mpls
2 siblings, 0 replies; 3+ messages in thread
From: shyouhei @ 2019-10-24 1:49 UTC (permalink / raw)
To: ruby-core
Issue #16277 has been updated by shyouhei (Shyouhei Urabe).
This is very nuanced. I'm not sure who is in charge of the exception.
`UNIXServer.new`'s return value socket is already listened inside of the method. Calling `listen` again on a socket that is already listening, might or might not error depending on OS. That's why you see exceptions on WSL and not on Linux.
The problem I see is why at the beginning you want to listen again a socket returned from `UNIXServer.new`. I guess you want to change (maybe increase) the backlog? Then there seems to be no way for `UNIXServer.new` to change backlog than listening again. Is it possible for a WSL-hosted application to dynamically change the backlog per-socket? If not (== there is no way but to specify enough backlog at the birth), I guess this is a misfeature of UNIXServer.
----------------------------------------
Bug #16277: UNIXServer#listen fails with Errno::EADDRINUSE error under Windows 10 / WSL Ubuntu 18.04
https://bugs.ruby-lang.org/issues/16277#change-82295
* Author: bradland (Brad Landers)
* Status: Open
* Priority: Normal
* Assignee:
* Target version:
* ruby -v: ruby 2.6.5p114 (2019-10-01 revision 67812) [x86_64-linux-gnu]
* Backport: 2.5: UNKNOWN, 2.6: UNKNOWN
----------------------------------------
When running the following script under Windows 10 / WSL Ubuntu 18.04, an Errno::EADDRINUSE error is thrown. Expected result is that the script would run and simply exit.
``` ruby
#!/usr/bin/env ruby
# This script establishes a UNIX server socket.
#
# Expected result: Script should run and immediately exit.
#
# Actual result: Script fails with Errno::EADDRINUSE error.
#
# Environment: Windows 10 Pro, WSL, Ubuntu 18.04.2, ruby 2.6.5p114 (2019-10-01 revision 67812) [x86_64-linux-gnu]
#
# To reproduce: Create a tmp folder, copy this script there, and execute.
require 'socket'
path = File.expand_path('listen.sock')
backlog = 5
s = UNIXServer.new(path)
if backlog
s.listen backlog
else
s.listen
end
File.delete(path) if File.exists?(path)
```
The bug was discoverd as part of Puma (gem) issue #1521: https://github.com/puma/puma/issues/1521.
--
https://bugs.ruby-lang.org/
^ permalink raw reply [flat|nested] 3+ messages in thread
* [ruby-core:95548] [Ruby master Bug#16277] UNIXServer#listen fails with Errno::EADDRINUSE error under Windows 10 / WSL Ubuntu 18.04
[not found] <redmine.issue-16277.20191023202026@ruby-lang.org>
2019-10-23 20:20 ` [ruby-core:95515] [Ruby master Bug#16277] UNIXServer#listen fails with Errno::EADDRINUSE error under Windows 10 / WSL Ubuntu 18.04 brad
2019-10-24 1:49 ` [ruby-core:95522] " shyouhei
@ 2019-10-25 15:39 ` Greg.mpls
2 siblings, 0 replies; 3+ messages in thread
From: Greg.mpls @ 2019-10-25 15:39 UTC (permalink / raw)
To: ruby-core
Issue #16277 has been updated by MSP-Greg (Greg L).
Would something like the following yield an equivalent object?
```ruby
require 'socket'
sock = Socket.new :UNIX, :STREAM
sock.bind Addrinfo.unix('tmp.sock', :STREAM)
sock.listen 1024
puts sock.local_address.unix?
```
----------------------------------------
Bug #16277: UNIXServer#listen fails with Errno::EADDRINUSE error under Windows 10 / WSL Ubuntu 18.04
https://bugs.ruby-lang.org/issues/16277#change-82324
* Author: bradland (Brad Landers)
* Status: Open
* Priority: Normal
* Assignee:
* Target version:
* ruby -v: ruby 2.6.5p114 (2019-10-01 revision 67812) [x86_64-linux-gnu]
* Backport: 2.5: UNKNOWN, 2.6: UNKNOWN
----------------------------------------
When running the following script under Windows 10 / WSL Ubuntu 18.04, an Errno::EADDRINUSE error is thrown. Expected result is that the script would run and simply exit.
``` ruby
#!/usr/bin/env ruby
# This script establishes a UNIX server socket.
#
# Expected result: Script should run and immediately exit.
#
# Actual result: Script fails with Errno::EADDRINUSE error.
#
# Environment: Windows 10 Pro, WSL, Ubuntu 18.04.2, ruby 2.6.5p114 (2019-10-01 revision 67812) [x86_64-linux-gnu]
#
# To reproduce: Create a tmp folder, copy this script there, and execute.
require 'socket'
path = File.expand_path('listen.sock')
backlog = 5
s = UNIXServer.new(path)
if backlog
s.listen backlog
else
s.listen
end
File.delete(path) if File.exists?(path)
```
The bug was discoverd as part of Puma (gem) issue #1521: https://github.com/puma/puma/issues/1521.
--
https://bugs.ruby-lang.org/
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2019-10-23 20:20 ` [ruby-core:95515] [Ruby master Bug#16277] UNIXServer#listen fails with Errno::EADDRINUSE error under Windows 10 / WSL Ubuntu 18.04 brad
2019-10-24 1:49 ` [ruby-core:95522] " shyouhei
2019-10-25 15:39 ` [ruby-core:95548] " Greg.mpls
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