Patrick Ecord
2ec5d892aa
The web client is real: `tethercore` with the full iroh stack now builds for wasm32-unknown-unknown, producing tethercore.wasm. - Runtime abstraction: a `Spawner` replaces the bare tokio runtime Handle across the Transport trait + Engine + all transports — tokio Handle on native, the browser event loop (wasm-bindgen-futures::spawn_local) on wasm. The engine no longer builds a tokio multi-thread runtime on wasm (there are no OS threads). - IrohTransport's internal tasks (re-register loop, blob fetch) route through the Spawner; its 30s timer uses n0-future (iroh's cross-platform async) instead of tokio::time, which isn't available on wasm. - iroh on wasm: default-features=false + tls-ring (ring builds for wasm with a wasm-capable clang) + iroh-gossip net; getrandom uses its wasm_js backend. - build-web.sh documents the toolchain (Homebrew LLVM clang for ring's C, the getrandom rustflag) and produces the .wasm. Native (default + iroh + all clients) is byte-unaffected and verified clean throughout. Remaining for a running web app: wasm-bindgen JS bindings + a browser shim (relay-only in-browser). Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
25 lines
1.2 KiB
Bash
Executable File
25 lines
1.2 KiB
Bash
Executable File
#!/usr/bin/env bash
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# Builds tethercore for the browser (wasm32). The core compiles to wasm with the
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# iroh Mesh (relay-only in-browser). The NEXT step — wasm-bindgen JS bindings +
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# a browser shim for the web app — is still TODO; this just produces the .wasm.
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#
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# Requires:
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# rustup target add wasm32-unknown-unknown
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# Homebrew LLVM (`brew install llvm`) for a wasm-capable clang — ring's build
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# script compiles C for wasm and Apple's clang has no wasm backend.
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set -euo pipefail
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cd "$(dirname "$0")"
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# A clang/llvm-ar that can target wasm (override with LLVM_PREFIX if elsewhere).
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LLVM="${LLVM_PREFIX:-/opt/homebrew/opt/llvm}"
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export CC_wasm32_unknown_unknown="$LLVM/bin/clang"
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export AR_wasm32_unknown_unknown="$LLVM/bin/llvm-ar"
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# getrandom has no OS rng in the browser — use its wasm_js backend.
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export RUSTFLAGS="${RUSTFLAGS:-} --cfg getrandom_backend=\"wasm_js\""
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rustup target add wasm32-unknown-unknown >/dev/null 2>&1 || true
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echo "▸ building tethercore for wasm32 (iroh, relay-only in-browser)…"
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cargo build --target wasm32-unknown-unknown --features iroh-transport --lib "$@"
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echo "✅ target/wasm32-unknown-unknown/debug/tethercore.wasm"
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echo " next: wasm-bindgen bindings + a JS shim for the browser app."
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