Transaction.from_bytes() works for few times before breaking.

Emurgo / cardano-serialization-lib

This is a library, written in Rust, for serialization & deserialization of data structures used in Cardano's Haskell implementation of Alonzo along with useful utility functions.

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Transaction.from_bytes() works for few times before breaking. #629

Closed kushalpokharel closed 1 year ago

kushalpokharel commented 1 year ago

Problem I am using serialization-lib-asmjs for my website where I try to parse a Transaction from bytes. It works correctly for few times after which, it throws a decoding error. This is the code that leads to this situation I am using v11.4.0

Reproduction The problem can be reproduced by cloning and running this repository: https://github.com/kushalpokharel/cardano-serialization-lib-test

lisicky commented 1 year ago

Hi @kushalpokharel ! CSL doesn't have an automatically memory management. Your code probably reached a memory limit. Call free(); on your deserialized transaction and on every CSL object after you finish work with them.

kushalpokharel commented 1 year ago

Thank you for the reply, it doesn't crash if I call free() after logging it.

I tried experimenting with different sizes of transactions without calling free()

With a transaction of size 290 bytes, it runs out of memory after 32 iterations
With a transaction of size 7Kb, it runs out of memory in 4 iterations. (this is pretty quick)

This means that in my app, I can't hold more than 4 transactions at a time when transactions are large.

Is there any way to increase the limit?

When I am developing a library using Cardano-serialization-lib, How do I handle this limitation?

lisicky commented 1 year ago

@kushalpokharel I would suggest to use "browser" version of the CSL if it possible to you. The "browser" version leverages wasm. This package will help you to integrate wasm into Vue project https://www.npmjs.com/package/vite-plugin-wasm