Merge pull request #157 from izderadicka/naive_streaming_fix

Add spawn blocking to FileStream

crates/librqbit/src/http_api.rs

@@ -170,7 +170,7 @@ impl HttpApi {
             let range_header = headers.get(http::header::RANGE);
             trace!(torrent_id=idx, file_id=file_id, range=?range_header, "request for HTTP stream");
 
-            if let Some(range) = headers.get(http::header::RANGE) {
+            if let Some(range) = range_header {
                 let offset: Option<u64> = range
                     .to_str()
                     .ok()

crates/librqbit/src/tests/e2e_stream.rs

@@ -1,6 +1,7 @@
 use std::{net::SocketAddr, time::Duration};
 
 use anyhow::Context;
+use tempfile::TempDir;
 use tokio::{io::AsyncReadExt, time::timeout};
 use tracing::info;
 
@@ -22,7 +23,7 @@ async fn e2e_stream() -> anyhow::Result<()> {
     let orig_content = std::fs::read(files.path().join("0.data")).unwrap();
 
     let server_session = Session::new_with_opts(
-        "/does-not-matter".into(),
+        files.path().into(),
         crate::SessionOptions {
             disable_dht: true,
             persistence: false,
@@ -63,8 +64,10 @@ async fn e2e_stream() -> anyhow::Result<()> {
         server_session.tcp_listen_port().unwrap(),
     );
 
+    let client_dir = TempDir::with_prefix("test_e2e_stream_client")?;
+
     let client_session = Session::new_with_opts(
-        "/does-not-matter".into(),
+        client_dir.path().into(),
         crate::SessionOptions {
             disable_dht: true,
             persistence: false,

crates/librqbit/src/torrent_state/streaming.rs

@@ -15,7 +15,9 @@ use librqbit_core::lengths::{CurrentPiece, Lengths, ValidPieceIndex};
 use tokio::io::{AsyncRead, AsyncSeek};
 use tracing::{debug, trace};
 
-use crate::{file_info::FileInfo, storage::TorrentStorage, ManagedTorrent};
+use crate::{
+    file_info::FileInfo, spawn_utils::BlockingSpawner, storage::TorrentStorage, ManagedTorrent,
+};
 
 use super::ManagedTorrentHandle;
 
@@ -136,6 +138,8 @@ pub struct FileStream {
     // file params
     file_len: u64,
     file_torrent_abs_offset: u64,
+
+    spawner: BlockingSpawner,
 }
 
 macro_rules! map_io_err {
@@ -211,13 +215,13 @@ impl AsyncRead for FileStream {
             "will write bytes"
         );
 
-        poll_try_io!(poll_try_io!(self.torrent.with_storage_and_file(
-            self.file_id,
-            |files, _fi| {
-                files.pread_exact(self.file_id, self.position, buf)?;
-                Ok::<_, anyhow::Error>(())
-            }
-        )));
+        poll_try_io!(poll_try_io!(self.spawner.spawn_block_in_place(|| {
+            self.torrent
+                .with_storage_and_file(self.file_id, |files, _fi| {
+                    files.pread_exact(self.file_id, self.position, buf)?;
+                    Ok::<_, anyhow::Error>(())
+                })
+        })));
 
         self.as_mut().advance(bytes_to_read as u64);
         tbuf.advance(bytes_to_read);
@@ -324,6 +328,7 @@ impl ManagedTorrent {
             file_len: fd_len,
             file_torrent_abs_offset: fd_offset,
             torrent: self,
+            spawner: BlockingSpawner::default(),
         };
         s.torrent.maybe_reconnect_needed_peers_for_file(file_id);
         streams.streams.insert(