Add some debugging

src/client.rs

@@ -179,10 +179,9 @@ impl ClientConn {
 			})));
 		}
 
-		trace!(
-			"request: query_send {} (serialized message: {} bytes)",
-			id,
-			req_msg_len
+		debug!(
+			"request: query_send {}, path {}, prio {} (serialized message: {} bytes)",
+			id, path, prio, req_msg_len
 		);
 
 		#[cfg(feature = "telemetry")]
@@ -201,7 +200,7 @@ impl ClientConn {
 		}
 
 		let resp_enc = RespEnc::decode(stream).await?;
-		trace!("request response {}", id);
+		debug!("client: got response to request {} (path {})", id, path);
 		Resp::from_enc(resp_enc)
 	}
 }

src/recv.rs

@@ -59,7 +59,6 @@ pub(crate) trait RecvLoop: Sync + 'static {
 	{
 		let mut streams: HashMap<RequestID, Sender> = HashMap::new();
 		loop {
-			trace!("recv_loop: reading packet");
 			let mut header_id = [0u8; RequestID::BITS as usize / 8];
 			match read.read_exact(&mut header_id[..]).await {
 				Ok(_) => (),
@@ -67,22 +66,31 @@ pub(crate) trait RecvLoop: Sync + 'static {
 				Err(e) => return Err(e.into()),
 			};
 			let id = RequestID::from_be_bytes(header_id);
-			trace!("recv_loop: got header id: {:04x}", id);
 
 			let mut header_size = [0u8; ChunkLength::BITS as usize / 8];
 			read.read_exact(&mut header_size[..]).await?;
 			let size = ChunkLength::from_be_bytes(header_size);
-			trace!("recv_loop: got header size: {:04x}", size);
 
 			let has_cont = (size & CHUNK_HAS_CONTINUATION) != 0;
 			let is_error = (size & ERROR_MARKER) != 0;
 			let packet = if is_error {
+				trace!(
+					"recv_loop: got id {}, header_size {:04x}, error {}",
+					id,
+					size,
+					size & !ERROR_MARKER
+				);
 				Err((size & !ERROR_MARKER) as u8)
 			} else {
 				let size = size & !CHUNK_HAS_CONTINUATION;
 				let mut next_slice = vec![0; size as usize];
 				read.read_exact(&mut next_slice[..]).await?;
-				trace!("recv_loop: read {} bytes", next_slice.len());
+				trace!(
+					"recv_loop: got id {}, header_size {:04x}, {} bytes",
+					id,
+					size,
+					next_slice.len()
+				);
 				Ok(Bytes::from(next_slice))
 			};
 
@@ -90,6 +98,7 @@ pub(crate) trait RecvLoop: Sync + 'static {
 				send
 			} else {
 				let (send, recv) = mpsc::channel(4);
+				trace!("recv_loop: id {} is new channel", id);
 				self.recv_handler(
 					id,
 					Box::pin(tokio_stream::wrappers::ReceiverStream::new(recv)),
@@ -102,8 +111,10 @@ pub(crate) trait RecvLoop: Sync + 'static {
 			let _ = sender.send(packet).await;
 
 			if has_cont {
+				assert!(!is_error);
 				streams.insert(id, sender);
 			} else {
+				trace!("recv_loop: close channel id {}", id);
 				sender.end();
 			}
 		}

src/send.rs

@@ -74,36 +74,54 @@ impl<'a> futures::Future for SendQueuePollNextReady<'a> {
 	type Output = (RequestID, DataFrame);
 
 	fn poll(mut self: Pin<&mut Self>, ctx: &mut Context<'_>) -> Poll<Self::Output> {
-		for i in 0..self.queue.items.len() {
-			let (_prio, items_at_prio) = &mut self.queue.items[i];
-
+		for (i, (_prio, items_at_prio)) in self.queue.items.iter_mut().enumerate() {
 			let mut ready_item = None;
 			for (j, item) in items_at_prio.iter_mut().enumerate() {
 				let mut item_reader = item.data.read_exact_or_eos(MAX_CHUNK_LENGTH as usize);
 				match Pin::new(&mut item_reader).poll(ctx) {
 					Poll::Pending => (),
 					Poll::Ready(ready_v) => {
-						ready_item = Some((j, ready_v, item.data.eos()));
+						ready_item = Some((j, ready_v));
 						break;
 					}
 				}
 			}
 
-			if let Some((j, bytes_or_err, eos)) = ready_item {
+			if let Some((j, bytes_or_err)) = ready_item {
+				let item = items_at_prio.remove(j).unwrap();
+				let id = item.id;
+				let eos = item.data.eos();
+
 				let data_frame = match bytes_or_err {
-					Ok(bytes) => DataFrame::Data(bytes, !eos),
+					Ok(bytes) => {
+						trace!(
+							"send queue poll next ready: id {} eos {:?} bytes {}",
+							id,
+							eos,
+							bytes.len()
+						);
+						DataFrame::Data(bytes, !eos)
+					}
 					Err(e) => DataFrame::Error(match e {
-						ReadExactError::Stream(code) => code,
+						ReadExactError::Stream(code) => {
+							trace!(
+								"send queue poll next ready: id {} eos {:?} ERROR {}",
+								id,
+								eos,
+								code
+							);
+							code
+						}
 						_ => unreachable!(),
 					}),
 				};
-				let item = items_at_prio.remove(j).unwrap();
-				let id = item.id;
-				if !eos {
+
+				if !eos && !matches!(data_frame, DataFrame::Error(_)) {
 					items_at_prio.push_back(item);
 				} else if items_at_prio.is_empty() {
 					self.queue.items.remove(i);
 				}
+
 				return Poll::Ready((id, data_frame));
 			}
 		}
@@ -173,6 +191,7 @@ pub(crate) trait SendLoop: Sync {
 			match futures::future::select(recv_fut, send_fut).await {
 				Either::Left((sth, _send_fut)) => {
 					if let Some((id, prio, data)) = sth {
+						trace!("send_loop: add stream {} to send", id);
 						sending.push(SendQueueItem {
 							id,
 							prio,
@@ -183,7 +202,12 @@ pub(crate) trait SendLoop: Sync {
 					};
 				}
 				Either::Right(((id, data), _recv_fut)) => {
-					trace!("send_loop: sending bytes for {}", id);
+					trace!(
+						"send_loop: id {}, send {} bytes, header_size {}",
+						id,
+						data.data().len(),
+						hex::encode(data.header())
+					);
 
 					let header_id = RequestID::to_be_bytes(id);
 					write.write_all(&header_id[..]).await?;

src/server.rs

@@ -3,7 +3,7 @@ use std::sync::Arc;
 
 use arc_swap::ArcSwapOption;
 use async_trait::async_trait;
-use log::{debug, trace};
+use log::*;
 
 use futures::io::{AsyncReadExt, AsyncWriteExt};
 use kuska_handshake::async_std::{handshake_server, BoxStream};
@@ -175,7 +175,8 @@ impl RecvLoop for ServerConn {
 
 		let self2 = self.clone();
 		tokio::spawn(async move {
-			trace!("ServerConn recv_handler {}", id);
+			debug!("server: recv_handler got {}", id);
+
 			let (prio, resp_enc) = match ReqEnc::decode(stream).await {
 				Ok(req_enc) => {
 					let prio = req_enc.prio;
@@ -192,7 +193,7 @@ impl RecvLoop for ServerConn {
 				Err(e) => (PRIO_NORMAL, RespEnc::from_err(e)),
 			};
 
-			trace!("ServerConn sending response to {}: ", id);
+			debug!("server: sending response to {}", id);
 
 			resp_send
 				.send((id, prio, resp_enc.encode()))

src/stream.rs

@@ -93,7 +93,7 @@ impl ByteStreamReader {
 	}
 
 	pub fn eos(&self) -> bool {
-		self.buf.is_empty() && self.eos
+		self.buf_len == 0 && self.eos
 	}
 
 	fn try_get(&mut self, read_len: usize) -> Option<Bytes> {
@@ -164,8 +164,10 @@ impl<'a> Future for ByteStreamReadExact<'a> {
 
 			match futures::ready!(this.reader.stream.as_mut().poll_next(cx)) {
 				Some(Ok(slice)) => {
-					this.reader.buf_len += slice.len();
-					this.reader.buf.push_back(slice);
+					if !slice.is_empty() {
+						this.reader.buf_len += slice.len();
+						this.reader.buf.push_back(slice);
+					}
 				}
 				Some(Err(e)) => {
 					this.reader.err = Some(e);