Felix Obenhuber

docs: document possible errors for nng_pipe_get functions

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Add error documentation for pipe option getter functions, including `NNG_ENOENT` which can be returned when the pipe does not exist. fixes #2198 ## Summary by CodeRabbit * **Documentation** * Expanded...

[Feature]: Predict serialized len

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### Is there an existing issue for this? - [x] I have searched the existing issues ### Description I'm using ciborium to serialize data directly into an [nng::Message](https://docs.rs/nng/latest/nng/struct.Message.html) buffer, which...