capnproto | n Proto serialization/RPC system | Serialization library

 by   capnproto C++ Version: v0.10.4 License: Non-SPDX

kandi X-RAY | capnproto Summary

kandi X-RAY | capnproto Summary

capnproto is a C++ library typically used in Utilities, Serialization applications. capnproto has no bugs and it has medium support. However capnproto has 6 vulnerabilities and it has a Non-SPDX License. You can download it from GitHub.

Cap'n Proto is an insanely fast data interchange format and capability-based RPC system. Think JSON, except binary. Or think Protocol Buffers, except faster. In fact, in benchmarks, Cap'n Proto is INFINITY TIMES faster than Protocol Buffers.

            kandi-support Support

              capnproto has a medium active ecosystem.
              It has 9924 star(s) with 842 fork(s). There are 310 watchers for this library.
              It had no major release in the last 6 months.
              There are 145 open issues and 465 have been closed. On average issues are closed in 36 days. There are 44 open pull requests and 0 closed requests.
              It has a neutral sentiment in the developer community.
              The latest version of capnproto is v0.10.4

            kandi-Quality Quality

              capnproto has 0 bugs and 0 code smells.

            kandi-Security Security

              capnproto has 6 vulnerability issues reported (2 critical, 3 high, 1 medium, 0 low).
              capnproto code analysis shows 0 unresolved vulnerabilities.
              There are 0 security hotspots that need review.

            kandi-License License

              capnproto has a Non-SPDX License.
              Non-SPDX licenses can be open source with a non SPDX compliant license, or non open source licenses, and you need to review them closely before use.

            kandi-Reuse Reuse

              capnproto releases are not available. You will need to build from source code and install.
              It has 1217 lines of code, 6 functions and 15 files.
              It has high code complexity. Code complexity directly impacts maintainability of the code.

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            capnproto Key Features

            No Key Features are available at this moment for capnproto.

            capnproto Examples and Code Snippets

            No Code Snippets are available at this moment for capnproto.

            Community Discussions


            How to handle capn_data in c?
            Asked 2021-Oct-18 at 09:29

            I use c-capnproto to serialize my sensor data. Now I need to add a HMAC to it. It needs to be a capn_data blob, but this is not handled in the example code.

            When I try to add the data, it does not work. This is my capnp file:



            Answered 2021-Oct-18 at 09:29

            Finally found a hint in this closed issue, that was not visible or overlooked in my research at the beginning...

            I used this code to serialize capn_data (this replaces the lower scope in the original question):



            How to access serialized data of Cap'n'Proto?
            Asked 2021-Jun-25 at 14:07

            I'm working with Cap'n'Proto and my understanding is there is no need to do serialization as it's already being done. So my question is, how would I access the serialized data and get it's size so that I can pass it in as a byte array to another library.



            Answered 2021-Jun-23 at 20:07
            ::capnp::MallocMessageBuilder message;



            Call to `thisCap()` segfaults
            Asked 2020-Oct-16 at 02:18

            I am playing with the calculator-server.c++ sample, where I try to extract thisCap() to have a capability to the server from outside. Because thisCap() is protected, I wrote my own public getCapability():



            Answered 2020-Oct-16 at 02:18

            thisCap() only works after at least one Client object has been created pointing at your server object. To create that initial Client, you can simply declare a variable of the client type and initialize it to your server object, like so:



            VS2019: Compiling Cap'nProto Crashes C++ Compiler
            Asked 2020-Sep-16 at 18:33

            So, the situation is that due to some unforeseen consequences I need to build Cap'nProto ( for windows using Visual Studio 2019 (latest release as far as I know, 16.7.3).

            As you can see from the screenshot below, the compiler is very unhappy with the code, to the extent that it gives an internal compiler error on the line 2616 where there is a pretty complex macro that expands to an auto template nightmare.

            The macro itself is:



            Answered 2020-Sep-16 at 18:33

            This is a Work around VS2019 ICE in KJ_CASE_ONEOF() that on code review now and hope soon will be merged into master



            Capnp: Move to previous position in BufferedInputStreamWrapper
            Asked 2020-Apr-20 at 13:54

            I have a binary file with multiple Capnp messages which I want to read. Reading sequentially works well, but I have the use-case, that I want to jump to a previously known position. The data sequential images with metadata including there timestamp. I would like to have the possibility to jump back and forth (like in a video player).

            This is what I have tried:



            Answered 2020-Apr-20 at 13:54

            BufferedInputStream is not seekable. In order to seek backwards, you will need to destroy bufferedStream and then seek the underlying file descriptor, e.g. with lseek(), then create a new buffered stream.

            Note that reading the current position (in order to pass to lseek() later to go back) is also tricky if a buffered stream is present, since the buffered stream will have read past the position in order to fill the buffer. You could calculate it by subtracting off the buffer size, e.g.:


            Community Discussions, Code Snippets contain sources that include Stack Exchange Network


            No vulnerabilities reported

            Install capnproto

            You can download it from GitHub.


            For any new features, suggestions and bugs create an issue on GitHub. If you have any questions check and ask questions on community page Stack Overflow .
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            gh repo clone capnproto/capnproto

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