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fix(op-reth): install default rustls CryptoProvider for flashblocks TLS #21605

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fix(op-reth): install default rustls CryptoProvider for flashblocks TLS #21605

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1 change: 1 addition & 0 deletions rust/op-reth/bin/Cargo.toml
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Expand Up @@ -23,6 +23,7 @@ reth-node-builder.workspace = true
reth-db.workspace = true

clap = { workspace = true, features = ["derive", "env"] }
rustls = { workspace = true, features = ["aws_lc_rs", "std"] }
tracing.workspace = true
eyre.workspace = true

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7 changes: 7 additions & 0 deletions rust/op-reth/bin/src/main.rs
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Expand Up @@ -15,6 +15,13 @@ static MALLOC_CONF: &[u8] = b"prof:true,prof_active:true,lg_prof_sample:19\0";
fn main() {
reth_cli_util::sigsegv_handler::install();

// rustls 0.23 no longer auto-selects a process-level CryptoProvider when
// multiple provider features are present in the dependency graph. Install one
// explicitly before any TLS is used (e.g. the flashblocks wss connection),
// otherwise op-reth panics on startup. See
// https://github.com/ethereum-optimism/optimism/issues/19322
let _ = rustls::crypto::aws_lc_rs::default_provider().install_default();

// Enable backtraces unless a RUST_BACKTRACE value has already been explicitly provided.
if std::env::var_os("RUST_BACKTRACE").is_none() {
unsafe {
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