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javascriptnode.jsmsgpack

serialization/deserialization of Node JS "undefined" in other languages

I'm serializing some data using message pack(@msgpack/msgpack) on a Node JS server and passing the serialized data via an HTTP communication to another software that is written in C++. My question is, what would a deserialized js "undefined" object look like on the C++ side?

Thanks in advance

Solution

  • The documentation says undefined and null are mapped to msgpack's nil, which is specified to be a single 0xC0 byte (192 in decimal).

    To wit:

    > require("@msgpack/msgpack").encode(undefined)
Uint8Array(1) [ 192 ]