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Protocol Buffers
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Protocol buffers are Google's language-neutral, platform-neutral, extensible mechanism for serializing structured data.
Documentation:
https://develop
ers.google.com/protocol-
buffers/
Issue tracker:
https://github.com/
protocolbuffers/protobuf
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Mike Kruskal
Jan 9
[protobuf] [Announcement] 33.3 release artifacts
Due to some issues with our Bazel BCR release, we needed to patch in some Bazel-specific integrity
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[protobuf] [Announcement] 33.3 release artifacts
Due to some issues with our Bazel BCR release, we needed to patch in some Bazel-specific integrity
Jan 9
Karen Wu
Jan 9
[Announcement] Protocol Buffers Version 33.3 is Released!
You can view the release and complete release notes on [GitHub](https://github.com/protocolbuffers/
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[Announcement] Protocol Buffers Version 33.3 is Released!
You can view the release and complete release notes on [GitHub](https://github.com/protocolbuffers/
Jan 9
Max Kanat-Alexander
,
Em Rauch
9
Jan 6
Plans for scoped enums?
That sounds fantastic, thank you Em. :) -Max On Tue, Jan 6, 2026 at 9:48 AM Em Rauch <esrauch@
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Plans for scoped enums?
That sounds fantastic, thank you Em. :) -Max On Tue, Jan 6, 2026 at 9:48 AM Em Rauch <esrauch@
Jan 6
Pablo Camacho
3
Jan 5
Strange error. MessageFactory object has no attribute GetMessageClass.
Solved! I had to call the MessageFactory at module level instead of at instance/object level.
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Strange error. MessageFactory object has no attribute GetMessageClass.
Solved! I had to call the MessageFactory at module level instead of at instance/object level.
Jan 5
Max Kanat-Alexander
,
Em Rauch
3
Jan 5
TRUE as an enum value in textprotos
Fantastic, thanks so much! You just saved me like a whole day of trying to vet that myself. :) On Mon
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TRUE as an enum value in textprotos
Fantastic, thanks so much! You just saved me like a whole day of trying to vet that myself. :) On Mon
Jan 5
Sandy Zhang
11/13/25
[Announcement] Protocol Buffers Version 33.1 is Released!
You can view the release and complete release notes on GitHub. If you experience any issues with the
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[Announcement] Protocol Buffers Version 33.1 is Released!
You can view the release and complete release notes on GitHub. If you experience any issues with the
11/13/25
Viktor Vorobev
,
Em Rauch
6
11/3/25
Potential Python memory leak
Here is the link to the created issue for the newer generations: https://github.com/protocolbuffers/
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Potential Python memory leak
Here is the link to the created issue for the newer generations: https://github.com/protocolbuffers/
11/3/25
Berend Lange
,
Em Rauch
3
11/3/25
Protobuf with Rust and Bazel
I opened an issue on github. I was trying to use the new protoc-gen-rust-grpc plugin in bazel, should
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Protobuf with Rust and Bazel
I opened an issue on github. I was trying to use the new protoc-gen-rust-grpc plugin in bazel, should
11/3/25
Markus Appel
,
Em Rauch
2
10/31/25
Removing System.Memory for Unity plugin
Unfortunately, I think we aren't likely to make nontrivial changes to target that environment (we
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Removing System.Memory for Unity plugin
Unfortunately, I think we aren't likely to make nontrivial changes to target that environment (we
10/31/25
James F. Bellinger
,
Samuel Benzaquen
2
10/17/25
Binary protocol Wire Type 7, proposal to use for padding
Thank you for the proposal. In the past, we explored techniques to add padding for alignment (eg to
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Binary protocol Wire Type 7, proposal to use for padding
Thank you for the proposal. In the past, we explored techniques to add padding for alignment (eg to
10/17/25
Dennis Shao
, …
Em Rauch
3
10/17/25
[Announcement] Protocol Buffers Version 33.0 is Released!
Thanks for reaching out Adrian. This is an unfortunate quirk of our release process where the BCR
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[Announcement] Protocol Buffers Version 33.0 is Released!
Thanks for reaching out Adrian. This is an unfortunate quirk of our release process where the BCR
10/17/25
Mike Kruskal
10/9/25
[Announcement] Protocol Buffers Version 33.0-rc2 is Released!
You can view the release and complete release notes on GitHub. If you experience any issues with the
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[Announcement] Protocol Buffers Version 33.0-rc2 is Released!
You can view the release and complete release notes on GitHub. If you experience any issues with the
10/9/25
Ondra Miksik
, …
Eric Salo
3
10/8/25
Prototiller release date
Apologies for the delay. We realized last year that prototiller needed to be rewritten and I have
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Prototiller release date
Apologies for the delay. We realized last year that prototiller needed to be rewritten and I have
10/8/25
Mike Kruskal
10/2/25
[Announcement] Protocol Buffers Version 33.0-rc1 is Released!
You can view the release and complete release notes on GitHub. If you experience any issues with the
unread,
[Announcement] Protocol Buffers Version 33.0-rc1 is Released!
You can view the release and complete release notes on GitHub. If you experience any issues with the
10/2/25
Marcin Lewandowski
, …
Em Rauch
7
10/2/25
How to properly do static linking within CMake project
Sorry about your difficulty here. Have you looked at our CMakeLists.txt example: https://github.com/
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How to properly do static linking within CMake project
Sorry about your difficulty here. Have you looked at our CMakeLists.txt example: https://github.com/
10/2/25
Petras Vestartas
,
Arjun Patel
3
9/25/25
crying in a small corner trying while trying to build C++ protobuf
@Arjun Patel this is the repository with CMakelists for v29, I could not manage to build for v32:
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crying in a small corner trying while trying to build C++ protobuf
@Arjun Patel this is the repository with CMakelists for v29, I could not manage to build for v32:
9/25/25
Machine Therapist
9/22/25
new tiny wrapper for protobuf c++ api
hey, i was playing around with the protobuf c++ api. to me it felt a bit verbose — lots of setters/
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new tiny wrapper for protobuf c++ api
hey, i was playing around with the protobuf c++ api. to me it felt a bit verbose — lots of setters/
9/22/25
Ranen Ghosh
,
Em Rauch
2
9/15/25
upb code generation
This looks correct, but I'll mention that upb's C code generation is not a supported API
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upb code generation
This looks correct, but I'll mention that upb's C code generation is not a supported API
9/15/25
Eric Salo
9/11/25
[Announcement] Protocol Buffers Version 32.1 is Released!
You can view the release and complete release notes on GitHub. If you experience any issues with the
unread,
[Announcement] Protocol Buffers Version 32.1 is Released!
You can view the release and complete release notes on GitHub. If you experience any issues with the
9/11/25
Lars Klein
9/11/25
python protobuf (upb) and subinterpreter support
Hi, we use python-protobuf in our python code that makes use of subinterpreters. We realized that the
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python protobuf (upb) and subinterpreter support
Hi, we use python-protobuf in our python code that makes use of subinterpreters. We realized that the
9/11/25
Lars Persson
,
Em Rauch
2
9/5/25
Protobuf with Java
Java requires that a file with a given package be in a directory structure which matches the package.
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Protobuf with Java
Java requires that a file with a given package be in a directory structure which matches the package.
9/5/25
Sumit Bhoir
8/29/25
when using protobufs in C++ facing runtime crash in ShortDebugString and DebugString
Hi, I have created static lib proto_gen.a from all proto files that im using in my code base. im
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when using protobufs in C++ facing runtime crash in ShortDebugString and DebugString
Hi, I have created static lib proto_gen.a from all proto files that im using in my code base. im
8/29/25
Arnab Joardar
8/25/25
Conda: Unable to find libupb, etc
Hello everyone, When attempting to build a ROS package (Noetic) on Conda, I run into the following
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Conda: Unable to find libupb, etc
Hello everyone, When attempting to build a ROS package (Noetic) on Conda, I run into the following
8/25/25
Jie Luo
8/14/25
[Announcement] Protocol Buffers Version 32.0 is Released!
You can view the release and complete release notes on GitHub. If you experience any issues with the
unread,
[Announcement] Protocol Buffers Version 32.0 is Released!
You can view the release and complete release notes on GitHub. If you experience any issues with the
8/14/25
Somak Dutta
,
Em Rauch
3
8/12/25
Seeking clarification on vulnerability fixes done for DOS https://github.com/advisories/GHSA-g5ww-5jh7-63cx
Thank you Em, appreciate your quick responses always. Regarding, It appears that it won't return
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Seeking clarification on vulnerability fixes done for DOS https://github.com/advisories/GHSA-g5ww-5jh7-63cx
Thank you Em, appreciate your quick responses always. Regarding, It appears that it won't return
8/12/25
Itamar Katz
, …
Em Rauch
3
8/12/25
The "1 MB message size rule of thumb" in the docs
That 1MB rule of thumb is a guideline about the total wire serialized size of the top-level message.
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The "1 MB message size rule of thumb" in the docs
That 1MB rule of thumb is a guideline about the total wire serialized size of the top-level message.
8/12/25
Andrei Pangratie
,
Em Rauch
3
8/5/25
Packed field with protoscope
That makes sense, thanks. On Tuesday, August 5, 2025 at 4:06:59 PM UTC+3 Em Rauch wrote: Packed
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Packed field with protoscope
That makes sense, thanks. On Tuesday, August 5, 2025 at 4:06:59 PM UTC+3 Em Rauch wrote: Packed
8/5/25
Jerry Berg
8/5/25
[Announcement] Protocol Buffers Version 32.0-rc2 is Released!
You can view the release and complete release notes on GitHub. If you experience any issues with the
unread,
[Announcement] Protocol Buffers Version 32.0-rc2 is Released!
You can view the release and complete release notes on GitHub. If you experience any issues with the
8/5/25
Saptarshi
, …
Paul Kotlyar
10
8/2/25
A quick question regarding writing protobuf message to Stream preceded by Header
I solved this problem https://medium.com/@unclepaul84/efficiently-reading-and-writing-very-large-
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A quick question regarding writing protobuf message to Stream preceded by Header
I solved this problem https://medium.com/@unclepaul84/efficiently-reading-and-writing-very-large-
8/2/25
David Castro
7/25/25
Edition 2024 now available
Protobuf Edition 2024 was released in the v32 RC1 release. Documentation on Edition 2024 is published
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Edition 2024 now available
Protobuf Edition 2024 was released in the v32 RC1 release. Documentation on Edition 2024 is published
7/25/25