From 157c8ab68dad214cf79ea639ba8a79d1beae51c4 Mon Sep 17 00:00:00 2001
From: ddidderr <ddidderr@paul.network>
Date: Thu, 13 Nov 2025 21:23:50 +0100
Subject: [PATCH] log noise, chunk size 32MB

---
 crates/lanspread-peer/src/lib.rs | 56 ++++++++++++++++++++++++++++----
 1 file changed, 49 insertions(+), 7 deletions(-)

diff --git a/crates/lanspread-peer/src/lib.rs b/crates/lanspread-peer/src/lib.rs
index 8967ef6..6f588cc 100644
--- a/crates/lanspread-peer/src/lib.rs
+++ b/crates/lanspread-peer/src/lib.rs
@@ -563,10 +563,12 @@ pub enum PeerCommand {
 }
 
 async fn initial_peer_alive_check(conn: &mut Connection) -> bool {
+    let remote_addr = conn.remote_addr().ok();
+
     let stream = match conn.open_bidirectional_stream().await {
         Ok(stream) => stream,
         Err(e) => {
-            log::error!("failed to open stream: {e}");
+            log::error!("{remote_addr:?} failed to open stream: {e}");
             return false;
         }
     };
@@ -575,7 +577,7 @@ async fn initial_peer_alive_check(conn: &mut Connection) -> bool {
 
     // send ping
     if let Err(e) = tx.send(Request::Ping.encode()).await {
-        log::error!("failed to send ping to peer: {e}");
+        log::error!("{remote_addr:?} failed to send ping to peer: {e}");
         return false;
     }
     let _ = tx.close().await;
@@ -585,11 +587,11 @@ async fn initial_peer_alive_check(conn: &mut Connection) -> bool {
         let response = Response::decode(response);
         match response {
             Response::Pong => {
-                log::info!("peer is alive");
+                log::trace!("{remote_addr:?} peer is alive");
                 return true;
             }
             _ => {
-                log::error!("peer sent invalid response to ping: {response:?}");
+                log::error!("{remote_addr:?} peer sent invalid response to ping: {response:?}");
             }
         }
     }
@@ -597,7 +599,7 @@ async fn initial_peer_alive_check(conn: &mut Connection) -> bool {
     false
 }
 
-const CHUNK_SIZE: u64 = 512 * 1024;
+const CHUNK_SIZE: u64 = 32 * 1024 * 1024;
 const MAX_RETRY_COUNT: usize = 3;
 
 #[derive(Debug, Clone)]
@@ -1644,8 +1646,8 @@ async fn handle_peer_stream(
                         offset,
                         length,
                     } => {
-                        log::info!(
-                            "Received GetGameFileChunk request for {relative_path} from peer"
+                        log::trace!(
+                            "{remote_addr:?} received GetGameFileChunk request for {relative_path} (offset {offset}, length {length})"
                         );
 
                         let maybe_game_dir = ctx.game_dir.read().await.clone();
@@ -2103,3 +2105,43 @@ async fn get_game_file_descriptions(
 
     Ok(file_descriptions)
 }
+
+#[cfg(test)]
+mod tests {
+    use std::net::SocketAddr;
+
+    use super::*;
+
+    fn loopback_addr(port: u16) -> SocketAddr {
+        SocketAddr::from(([127, 0, 0, 1], port))
+    }
+
+    #[test]
+    fn build_peer_plans_handles_partial_final_chunk() {
+        let peers = vec![loopback_addr(12000), loopback_addr(12001)];
+        let file_size = CHUNK_SIZE * 2 + CHUNK_SIZE / 4;
+        let file_descs = vec![GameFileDescription {
+            game_id: "test".to_string(),
+            relative_path: "game/file.dat".to_string(),
+            is_dir: false,
+            size: file_size,
+        }];
+
+        let plans = build_peer_plans(&peers, &file_descs);
+        let mut chunks: Vec<_> = plans.values().flat_map(|plan| plan.chunks.iter()).collect();
+
+        assert_eq!(chunks.len(), 3, "expected three chunks for 2.25 blocks");
+
+        chunks.sort_by_key(|chunk| chunk.offset);
+        let last_chunk = chunks.last().expect("last chunk exists");
+
+        assert_eq!(last_chunk.offset, CHUNK_SIZE * 2);
+        assert_eq!(last_chunk.length, file_size - last_chunk.offset);
+        assert_eq!(last_chunk.length, CHUNK_SIZE / 4);
+        assert_eq!(
+            last_chunk.offset + last_chunk.length,
+            file_size,
+            "last chunk should finish the file"
+        );
+    }
+}