max fd limit

Cargo.lock

@@ -1387,6 +1387,15 @@ dependencies = [
  "instant",
 ]
 
+[[package]]
+name = "fdlimit"
+version = "0.2.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "2c4c9e43643f5a3be4ca5b67d26b98031ff9db6806c3440ae32e02e3ceac3f1b"
+dependencies = [
+ "libc",
+]
+
 [[package]]
 name = "ff"
 version = "0.11.1"
@@ -4294,6 +4303,7 @@ dependencies = [
  "dashmap",
  "derive_more",
  "ethers",
+ "fdlimit",
  "flume",
  "futures",
  "governor",

web3-proxy/Cargo.toml

@@ -13,6 +13,7 @@ console-subscriber = { version = "0.1.5", features = ["parking_lot"] }
 dashmap = "5.3.3"
 derive_more = "0.99.17"
 ethers = { git = "https://github.com/gakonst/ethers-rs", features = ["rustls", "ws"] }
+fdlimit = "0.2.1"
 flume = "0.10.12"
 futures = { version = "0.3.21", features = ["thread-pool"] }
 # TODO: governor has a "futures" and "futures-timer" feature. do we want those?

web3-proxy/src/main.rs

@@ -25,6 +25,8 @@ fn main() -> anyhow::Result<()> {
     // TODO: if RUST_LOG isn't set, set it to "web3_proxy=debug" or something
     console_subscriber::init();
 
+    fdlimit::raise_fd_limit();
+
     let cli_config: CliConfig = argh::from_env();
 
     info!("Loading rpc config @ {}", cli_config.rpc_config_path);