fix(deps): update module github.com/panjf2000/gnet to v2 #19

chore: use errors.Is and errors.Join for customized errors (#640)
opt: close file descriptor after OnClose() for UDP along with code improvement (#624)
opt: close file descriptor after OnClose() (#622)
opt: bring down the maxBytesTransferET and defer write in ET mode (#606)
opt: clamp the event-loops in ET mode to avaoid starving (#599)
opt: reduce duplicate code for I/O reactors (#590)

🐛 Bugfixes

bug: fix Conn.Next not safe (#648) (#649)
opt: close file descriptor after OnClose() for UDP along with code improvement (#624)
opt: close file descriptor after OnClose() (#622)
bug: fix the wrong default behavior of TCPNoDelay on client side (#619)
bug: fix Conn.Next and Conn.Peek panic On Unix (#616)
opt: fix compilation errors on *BSD (#593)

📚 Documentation

opt: bump up minimum required Go version to 1.20 (#638)
bug: fix the wrong default behavior of TCPNoDelay on client side (#619)

🗃 Misc

test: add test for SO_BINDTODEVICE with TCP (#652)
chore: use errors.Is and errors.Join for customized errors (#640)
test: increase the test code coverage a little bit (#618)
chore: upgrade modules and update .gitignore (#613)

Thanks to all these contributors: @panjf2000, @serious-snow and @zhongweikang for making this release possible.

`v2.5.9`

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`v2.5.8`

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`v2.5.7`

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`v2.5.6`

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`v2.5.5`

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`v2.5.4`

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`v2.5.3`

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`v2.5.2`

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`v2.5.1`

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`v2.5.0`: Gnet v2.5.0, Cowboy Bebop

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[!IMPORTANT]
Edge-triggered mode is officially supported in gnet!

Visit also Announcing gnet v2.5.0

🚀 Features

feat: support multiple network addresses binding (#578)
feat: support edge-triggered I/O (#576)

🛩 Enhancements

opt: reduce duplicate code of I/O processing (#587)
opt: refine the code of I/O handlers (#586)
opt: enable ET mode on listener event-loop by default (#585)
opt: disable SO_REUSEPORT on Unix domain sockets (#584)
opt: don't disable SO_REUSEPORT on DragonFlyBSD (#583)
opt: only enable SO_REUSEPORT on Linux and FreeBSD (#580)

🐛 Bugfixes

bug: fix the EEXIST of epoll_ctl in eventloop.open (#572)
bug: return 0 instead of -1 when error occurred on a write (#569)

Full Changelog: panjf2000/gnet@v2.4.0...v2.5.0

Thanks to all these contributors: @daynobug and @panjf2000 for making this release possible.

New Contributors

@daynobug made their first contribution in #569

`v2.4.2`

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`v2.4.1`

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`v2.4.0`: Gnet v2.4.0, Spirited Away

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🚀 Features

opt: mitigate the latency issue by prioritizing asynchronous writes (#563)
feat: enable OnOpen for connected UDP socket (#554)
feat: add DialContext and EnrollContext for Client (#543)

🛩 Enhancements

opt: mitigate the latency issue by prioritizing asynchronous writes (#563)
feat: enable OnOpen for connected UDP socket (#554)
opt: use accept4 where available (#535)
bug: read the remaining data after the peer wrote and closed on BSD (#531)
opt: make TCP Keep-Alives settings practicable (#522)
opt: eliminate error logs when the service exits normally (#500)

🐛 Bugfixes

bug: fix the memory leaks of localAddr and remoteAddr in conn (#547) a3a2b7a
bug: read the remaining data after the peer wrote and closed on BSD (#531)
bug: fix the inconsistent behaviors on Windows (#510)
bug: make logging package concurrent-safe (#487)

📚 Documentation

doc: update to the latest Round 22 of TechEmpower Benchmark 6d01da7
bug: fix the inconsistent behaviors on Windows (#510)
chore: add a TODO about removing the callback in Conn.AsyncWrite with UDP (#494)

🗃 Misc

ci: add a bot that translates non-English issues 6e3e0c3 f7cfb5b
chore: switch from Gitter to Discord 5d1cf9e
mod: bump up a few modules 1bf7af4
dep: bump up a few dependencies and enable more auto-labelers in CI (#504)
chore: consolidate the import declarations of the internal error package (#501)
chore: do some chores on tests and comments (#499)
chore: add a TODO about removing the callback in Conn.AsyncWrite with UDP (#494)
chore: bump up modules (#493)

Full Changelog: panjf2000/gnet@v2.3.0...v2.4.0

Thanks to all these contributors: @leslie-fei and @panjf2000 for making this release possible.

New Contributors

@leslie-fei made their first contribution in #543

`v2.3.6`

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`v2.3.5`

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`v2.3.4`

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`v2.3.3`

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`v2.3.2`

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`v2.3.1`

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`v2.3.0`: Gnet v2.3.0, Fullmetal Alchemist

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[!TIP]
GC latency caused by a mass of connections is about to be significantly reduced in this release.

🚀 Features

feat: implement gnet on Windows (#461)

🛩 Enhancements

build: add NetBSD and OpenBSD supports 9790927
opt: make use of the inheritance of file status flags on BSD-like OS d98706e
opt: rearrange the matrix and map of connections e308399
internal/math: fix a corner case for IsPowerOfTwo (#476)
opt: improve comments on Conn and test cases (#471)
opt: mitigate big map issue of connections when garbage collecting (#460)
opt: use the std math/bits routine to count the bit length (#437)
opt: refine the SockaddrToTCPOrUnixAddr and SockaddrToUDPAddr abcc031
opt: prepend [gnet] prefix to every log entry 650f731
opt: set up the PanicHandler and Logger for pkg/pool/goroutine 222a395

🐛 Bugfixes

bug: fix the data race among asynchronous methods daffb4e
bug: fix the data race in test on Windows (#472)
bug: replace the global logger with custom logger for client on Windows dd46b08
bug: invoke the callback whether the connection is open or not (#466)
bug: clean up the inner buffer after read event (#445)
bug: fix the nil panic in conn.Flush() and increase the code coverage 0f41b37
bug: fix the memory leak of linked-list-buffer 4b6dfdc
bug: fix the compile error on FreeBSD with 32-bit 72b6e72
bug & feat: replace the global default logger with custom logger 3c66bce

📚 Documentation

chore: update the info of techempower.com b341103
doc: update the minimum required version of Go a9c2638
doc: update READMEs about supported platforms 88ed242

🧳 Misc

chore: delete the unused code in pkg/buffer/ring bdbb661
chore: code cleanup 9ff529b
opt: rename eventloop.closeConn to eventloop.close 7c9a61a
chore: add test for Engine.CountConnections b493107
chore: print a debugging log about logging level when client starts bdda3bf
chore: update copyright info ebc191e
chore: bump ants to v2.7.3 edb9318
chore: fix the lint issues edffef8
chore: add more test cases for custom protocol testing deea03f

❇️ Notices

The two major updates in this release are #460 and #461.

We introduced a new data structure matrix in #460 to displace the default map for managing connections internally, with the help of this new data structure, we can eliminate the pointers in map and store connections in the form of a matrix (an array of slices), which will significantly reduce GC (Garbage Collection) latency:

goos: darwin
goarch: arm64
pkg: github.com/panjf2000/gnet/v2
                                    │     old      │                 new                  │
                                    │    sec/op    │    sec/op     vs base                │
GC4El100k/Run-4-eventloop-100000-10    30.74m ± 3%   19.68m ± 10%  -35.98% (p=0.000 n=10)
GC4El200k/Run-4-eventloop-200000-10    63.64m ± 3%   38.16m ± 11%  -40.04% (p=0.000 n=10)
GC4El500k/Run-4-eventloop-500000-10   177.28m ± 8%   95.21m ±  4%  -46.29% (p=0.000 n=10)
geomean                                70.26m        41.51m        -40.92%

                                    │     old     │                new                 │
                                    │    B/op     │    B/op      vs base               │
GC4El100k/Run-4-eventloop-100000-10   27.50 ± 35%   25.50 ± 33%       ~ (p=0.423 n=10)
GC4El200k/Run-4-eventloop-200000-10   27.50 ± 53%   20.50 ± 66%       ~ (p=0.642 n=10)
GC4El500k/Run-4-eventloop-500000-10   16.00 ±   ?   18.00 ±   ?       ~ (p=0.357 n=10)
geomean                               22.96         21.11        -8.04%

                                    │     old      │                 new                 │
                                    │  allocs/op   │ allocs/op   vs base                 │
GC4El100k/Run-4-eventloop-100000-10   0.000 ± 0%     0.000 ± 0%       ~ (p=1.000 n=10) ¹
GC4El200k/Run-4-eventloop-200000-10   0.000 ± 0%     0.000 ± 0%       ~ (p=1.000 n=10) ¹
GC4El500k/Run-4-eventloop-500000-10   0.000 ± 0%     0.000 ± 0%       ~ (p=1.000 n=10) ¹
geomean                                          ²               +0.00%                ²
¹ all samples are equal
² summaries must be >0 to compute geomean

The more connections there are, the more pronounced the effect.

While we have performed sufficient testing on matrix, we are still using map as the default connection storage in this RC version for the sake of caution, but you can enable the new data structure by specifying build tags: -tags=gc_opt. This can be considered as a precautionary measure so that in case matrix has any unexpected bugs, you can quickly fall back to the default map. We will consider promoting matrix to be the default storage for connections in a subsequent official release.

Another significant leap is #461, you can now run gnet on Windows, it should be noted that the Windows version of gnet is intended for development purposes and is not recommended for use in production.

Full Changelog: panjf2000/gnet@v2.2.0...v2.3.0

Thanks to all these contributors: @0-haha, @GXKe, @gocurr, @jinxing3114 and @panjf2000 for making this release possible.

`v2.2.9`

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`v2.2.8`

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`v2.2.7`

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`v2.2.6`

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`v2.2.3`

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`v2.2.2`

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`v2.2.1`

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`v2.2.0`: Gnet v2.2.0, 5 Centimeters per Second

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[!CAUTION]
This release includes breaking changes.

🧨 Breaking changes

opt: redefine AsyncCallback, pass in the error message 691e077

🚀 Features

opt: implement Close() for gnet.Conn to make it compatible with net.Conn (#348)
feat: implement a new API to convert and add net.Conn into gnet.Client c296922
allow creation of multiple engines on the same protocol and port (#419)
feat: add multicast UDP listener support (#412)

🛩 Enhancements

opt: reduce the memory allocation when a connection is idle 27667f3

🐛 Bugfixes

bug: set the correct number of bytes written by conn.WriteTo() (#344)
bug: fix the issue of discarding bytes in buffer mistakenly in Conn.Read() 0282025
bug: bind socket only when it's in passive mode (#373)
bug: fix the compile error on linux/mips f2e2fa3
bug: return io.EOF in Read(), comply with io.Reader and io.Writer 3c3c519
bug: fix the issue failing to listen on 0.0.0.0 on linux/arm64 c9eeca1
opt: avoid the long hanging when the peer crashes c138ac5
opt: put the bytes of net.Addr.Zone back to pool when connection is closed 50406b3

🗃 Misc

opt: refine the logic of eventfd in poller 38aa2e0
opt: fieldalignment, optimization from 144 to 104 byte f70489f
opt: improve the internal packages of math and bytes f172799

Full Changelog: panjf2000/gnet@v2.0.0...v2.2.0

Thanks to all these contributors: @0-haha, @JemmyH, @ccssrryy, @jdamick, @leki75, @panjf2000, @zhongweikang and zhongweikang for making this release possible.

`v2.1.2`

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`v2.1.1`

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`v2.1.0`

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`v2.0.3`

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`v2.0.2`

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`v2.0.1`

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`v2.0.0`: Gnet v2.0.0, Akira

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[!NOTE]
This is a major release that renovates the gnet v1, new programming paradigm is therefore introduced along with breaking changes to the backward compatibility!

Today, I'm thrilled to announce the release of gnet v2.0.0, in which we've made plenty of significant improvements and optimizations: added and removed some APIs, redesigned and reimplemented the buffer, optimized the memory pool, etc.

Please visit the blog post of announcing gnet v2.0.0 for more details.

Configuration

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🔕 Ignore: Close this PR and you won't be reminded about this update again.

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This PR was generated by Mend Renovate. View the repository job log.

codecov-commenter · 2026-01-17T17:10:41Z

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 88.88%. Comparing base (f2f4a34) to head (5bbc7c1).

Additional details and impacted files

@@           Coverage Diff           @@
##             main      #19   +/-   ##
=======================================
  Coverage   88.88%   88.88%           
=======================================
  Files           8        8           
  Lines         279      279           
=======================================
  Hits          248      248           
  Misses         24       24           
  Partials        7        7

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fix(deps): update module github.com/panjf2000/gnet to v2

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Release Notes

v2.9.0: Gnet v2.9.0, Millennium Actress

🚀 Features

v2.8.0: Gnet v2.8.0, GIS 2: Innocence

🚀 Features

🛩 Enhancements

🐛 Bugfixes

🗃 Misc

v2.7.0: Gnet v2.7.0, Nausicaä of the Valley of the Wind

🚀 Features

🛩 Enhancements

📚 Documentation

🗃 Misc

v2.6.0: Gnet v2.6.0, Ghost in the Shell

🚀 Features

🛩 Enhancements

🐛 Bugfixes

📚 Documentation

🗃 Misc

v2.5.0: Gnet v2.5.0, Cowboy Bebop

🚀 Features

🛩 Enhancements

🐛 Bugfixes

New Contributors

v2.4.0: Gnet v2.4.0, Spirited Away

🚀 Features

🛩 Enhancements

🐛 Bugfixes

📚 Documentation

🗃 Misc

New Contributors

v2.3.0: Gnet v2.3.0, Fullmetal Alchemist

🚀 Features

🛩 Enhancements

🐛 Bugfixes

📚 Documentation

🧳 Misc

❇️ Notices

v2.2.0: Gnet v2.2.0, 5 Centimeters per Second

🧨 Breaking changes

🚀 Features

🛩 Enhancements

🐛 Bugfixes

🗃 Misc

v2.0.0: Gnet v2.0.0, Akira

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`v2.9.0`: Gnet v2.9.0, Millennium Actress

`v2.8.0`: Gnet v2.8.0, GIS 2: Innocence

`v2.7.0`: Gnet v2.7.0, Nausicaä of the Valley of the Wind

`v2.6.0`: Gnet v2.6.0, Ghost in the Shell

`v2.5.0`: Gnet v2.5.0, Cowboy Bebop

`v2.4.0`: Gnet v2.4.0, Spirited Away

`v2.3.0`: Gnet v2.3.0, Fullmetal Alchemist

`v2.2.0`: Gnet v2.2.0, 5 Centimeters per Second

`v2.0.0`: Gnet v2.0.0, Akira