[refactor] set the congestion window settings

crates/anemo/src/config.rs

@@ -7,6 +7,7 @@ use quinn::VarInt;
 use rcgen::{CertificateParams, KeyPair, SignatureAlgorithm};
 use serde::{Deserialize, Serialize};
 use std::{sync::Arc, time::Duration};
+use quinn_proto::congestion;
 
 /// Configuration for a [`Network`](crate::Network).
 #[derive(Clone, Debug, Default, Serialize, Deserialize)]
@@ -342,6 +343,11 @@ impl QuicConfig {
             config.keep_alive_interval(Some(keep_alive_interval));
         }
 
+        let mut cc_config = congestion::NewRenoConfig::default();
+        cc_config.loss_reduction_factor(0.7);
+        cc_config.initial_window(4 << 20);
+        config.congestion_controller_factory(Arc::new(cc_config));
+
         config
     }
 }