kandi X-RAY | capnproto Summary
kandi X-RAY | capnproto Summary
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.
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capnproto Key Features
capnproto Examples and Code Snippets
Trending Discussions on capnproto
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
ANSWERAnswered 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):
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....
ANSWERAnswered 2021-Jun-23 at 20:07
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
protected, I wrote my own public
ANSWERAnswered 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:
So, the situation is that due to some unforeseen consequences I need to build Cap'nProto (https://capnproto.org/) 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:...
ANSWERAnswered 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
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:...
ANSWERAnswered 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.:
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