Try to increase limits on start

crates/librqbit/Cargo.toml

@@ -67,6 +67,7 @@ base64 = "0.21.5"
 serde_with = "3.4.0"
 tokio-util = "0.7.10"
 bytes = "1.5.0"
+rlimit = "0.10.1"
 
 [dev-dependencies]
 futures = {version = "0.3"}

crates/librqbit/src/lib.rs

@@ -59,3 +59,7 @@ pub use librqbit_core::torrent_metainfo::*;
 pub fn version() -> &'static str {
     env!("CARGO_PKG_VERSION")
 }
+
+pub fn try_increase_nofile_limit() -> anyhow::Result<u64> {
+    Ok(rlimit::increase_nofile_limit(1024 * 1024)?)
+}

crates/rqbit/src/main.rs

@@ -246,6 +246,11 @@ async fn async_main(opts: Opts) -> anyhow::Result<()> {
         log_file_rust_log: Some(&opts.log_file_rust_log),
     })?;
 
+    match librqbit::try_increase_nofile_limit() {
+        Ok(limit) => info!(limit = limit, "inreased open file limit"),
+        Err(e) => warn!("failed increasing open file limit: {:#}", e),
+    };
+
     let mut sopts = SessionOptions {
         disable_dht: opts.disable_dht,
         disable_dht_persistence: opts.disable_dht_persistence,