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kandi X-RAY | cpptutorial Summary
kandi X-RAY | cpptutorial Summary
Title: On the C++ Programming Language: Readme Author: Christian Neumüller.
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Top functions reviewed by kandi - BETA
- Run the task
- Create a task reference node
- Make an admonition
- Inserts the resolved title prefix
- Parse a title node
- Apply the transformation to the document
- Transforms task_solution directive
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QUESTION
I couldn't find a proper guide to send and receive protobuf messages over network. The example from tutorial shows how to read from and write to a file. So a naive approach would be to create a custom header for a network protocol and send protobuf files. Header also contains enumeration value for a type of the message.
So the question is: Does protobuf provide an API to read a message's header to be able to distinguish its type and length?If it does, can it be acquired without receiving the whole message?
...ANSWER
Answered 2021-Feb-24 at 14:15No, a vanilla protobuf payload does not contain metadata about the message type (the recipient is expected to know that in advance), nor is it self-framing (if sending multiple messages on the same transport, you are expected to use your own framing protocol).
QUESTION
I am using Protobuf to change data between computers with sockets. To transfer the data I'm using the following:
...ANSWER
Answered 2020-Nov-09 at 11:04The string serialized from a protobuf message is a binary string. You cannot construct a std::string
with a single binary char pointer. Instead, you should also specify the size of the binary string.
QUESTION
I have been using google protobufs successfully for a month and a half now and I have reached a problem I cannot surmount.
Basically, I am now trying to use the oneof
feature in protobufs where I can have multiple types of messages inside of a single message. Basically, I need to be able to send only 1 message but contain multiple different options for submessages. I found many SO posts recommended the oneof
feature, so now I am trying to use it.
ANSWER
Answered 2019-Jul-13 at 09:01If you want to use set_allocated_XXX
you cant use objects with local scope because you pass the ownership of your object with that function. At the end of your first iteration robdata goes out of scope. So it will be destroyed. Since it is the owner of payload, it will also destroy/delete payload.
Instead of:
QUESTION
I have been struggling with Google protobufs lately. I have written a proto file called Button.proto
.
Here are its contents:
...ANSWER
Answered 2019-Jun-02 at 11:40After thinking about the comment provided by @goduk, I thought I should look further into the linking library issue and find the files I need to source. It turns out that I was not linking to any specific location.
I decided to look through the docs under protobuf-3.7.1/src/README.md
to explore further to find the .../lib/
directory. After re-reading those docs, a specific section caught my eye.
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