Using Zenoh from webassembly #69
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Hi, I'm working on a project where all data are communicated from data gathering devices to a central data server using zenoh. There will be a webassembly based website developed in Rust using egui.rs for frontend, and I am wondering if it is possible to use zenoh to communicate data to a webassembly program running in a browser. Has anyone attempted to test/use zenoh in such a setup ? Best Regards, |
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Replies: 2 comments 1 reply
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Hi, @SverreEplov we indeed started experimenting with WASM. We are also investigating how to build the WASM from the Rust implementation. It first requires a review of external dependencies, as some of the ones we are using currently do not compile for the WASM target. Is your use-case explicitly require a Zenoh rust-based client to compile as WASM (I guess so as you are using egui.rs) or a JS/WASM API will be able to fit? |
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Hi @gabrik , I don't think a JS/WASM solution will cut it, as there will be at least 2 video streams plus a number of data/control topics to handle. It is encouraging to hear that a WASM version of the native Rust implementation is in the works. For the usecase I have, a client functionality will suffice, as the browser solution will work in client mode only. The part with reviewing/solving external dependencies for WASM use sounds very familiar - that is an issue for us as well, as we want to do a lot in the browser. (Video decoding, stream synchronization and so on). My plan right now is to find an intermediate solution, and switch to pure Zenoh when a Rust WASM solution is in the works. If this can be of any value, we will be happy to work with testing a WASM Zenoh in setup replicating a final production system during development of Zenoh in WASM. Best Regards, |
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Just to keep track of the current status:
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Hi, @SverreEplov we indeed started experimenting with WASM.
For the time being, we started with Zenoh-Pico, for which there is a PR #135 that enables to compile to WASM with the support of WebSocket as a transport.
We are also investigating how to build the WASM from the Rust implementation. It first requires a review of external dependencies, as some of the ones we are using currently do not compile for the WASM target.
Is your use-case explicitly require a Zenoh rust-based client to compile as WASM (I guess so as you are using egui.rs) or a JS/WASM API will be able to fit?