Allow to use framed write task for io flushing

ntex-codec/src/framed.rs

@@ -240,7 +240,10 @@ where
                     Poll::Pending => break,
                     Poll::Ready(Ok(n)) => {
                         if n == 0 {
-                            log::trace!("Disconnected during flush, written {}", written);
+                            log::trace!(
+                                "Disconnected during flush, written {}",
+                                written
+                            );
                             self.flags.insert(Flags::DISCONNECTED);
                             return Poll::Ready(Err(io::Error::new(
                                 io::ErrorKind::WriteZero,

ntex/CHANGES.md

@@ -1,5 +1,9 @@
 # Changes
 
+## [0.2.0-b.3] - 2021-01-21
+
+* Allow to use framed write task for io flushing
+
 ## [0.2.0-b.2] - 2021-01-20
 
 * Fix flush framed write task

ntex/Cargo.toml

@@ -1,6 +1,6 @@
 [package]
 name = "ntex"
-version = "0.2.0-b.2"
+version = "0.2.0-b.3"
 authors = ["ntex contributors <team@ntex.rs>"]
 description = "Framework for composable network services"
 readme = "README.md"
@@ -36,7 +36,7 @@ compress = ["flate2", "brotli2"]
 cookie = ["coo-kie", "coo-kie/percent-encode"]
 
 [dependencies]
-ntex-codec = "0.2.1"
+ntex-codec = "0.2.2"
 ntex-rt = "0.1.1"
 ntex-rt-macros = "0.1"
 ntex-router = "0.3.8"

ntex/src/framed/read.rs

@@ -37,6 +37,7 @@ where
 
     fn poll(self: Pin<&mut Self>, cx: &mut Context<'_>) -> Poll<Self::Output> {
         if self.state.is_io_shutdown() {
+            log::trace!("read task is instructed to shutdown");
             Poll::Ready(())
         } else if self.state.is_read_paused() {
             self.state.register_read_task(cx.waker());
@@ -50,6 +51,7 @@ where
                     Poll::Pending
                 }
                 Err(err) => {
+                    log::trace!("error during reading data: {:?}", err);
                     self.state.set_io_error(err);
                     Poll::Ready(())
                 }

ntex/src/framed/state.rs

@@ -367,14 +367,25 @@ impl<U> State<U> {
         self.0.dispatch_task.register(waker);
     }
 
-    pub(crate) fn with_read_buf<F, R>(&self, f: F) -> R
+    fn mark_io_error(&self) {
+        self.0.read_task.wake();
+        self.0.write_task.wake();
+        self.0.dispatch_task.wake();
+        let mut flags = self.0.flags.get();
+        flags.insert(Flags::IO_ERR | Flags::DSP_STOP);
+        self.0.flags.set(flags);
+    }
+
+    #[inline]
+    pub fn with_read_buf<F, R>(&self, f: F) -> R
     where
         F: FnOnce(&mut BytesMut) -> R,
     {
         f(&mut self.0.read_buf.borrow_mut())
     }
 
-    pub(crate) fn with_write_buf<F, R>(&self, f: F) -> R
+    #[inline]
+    pub fn with_write_buf<F, R>(&self, f: F) -> R
     where
         F: FnOnce(&mut BytesMut) -> R,
     {
@@ -448,7 +459,10 @@ where
                         continue;
                     }
                 }
-                Err(err) => Err(Either::Left(err)),
+                Err(err) => {
+                    self.mark_io_error();
+                    Err(Either::Left(err))
+                }
             };
         }
     }
@@ -479,7 +493,10 @@ where
                         continue;
                     }
                 }
-                Err(err) => Poll::Ready(Err(Either::Left(err))),
+                Err(err) => {
+                    self.mark_io_error();
+                    Poll::Ready(Err(Either::Left(err)))
+                }
             };
         }
     }
@@ -502,7 +519,10 @@ where
         let st = self.0.clone();
         poll_fn(|cx| flush(io, &mut st.write_buf.borrow_mut(), cx))
             .await
-            .map_err(Either::Right)
+            .map_err(|e| {
+                self.mark_io_error();
+                Either::Right(e)
+            })
     }
 
     #[inline]

ntex/src/framed/write.rs

@@ -48,6 +48,21 @@ where
             st: IoWriteState::Processing,
         }
     }
+
+    /// Shutdown io stream
+    pub fn shutdown(io: Rc<RefCell<T>>, state: State<U>) -> Self {
+        let disconnect_timeout = state.disconnect_timeout() as u64;
+        let st = IoWriteState::Shutdown(
+            if disconnect_timeout != 0 {
+                Some(delay_for(Duration::from_millis(disconnect_timeout)))
+            } else {
+                None
+            },
+            Shutdown::None,
+        );
+
+        Self { io, st, state }
+    }
 }
 
 impl<T, U> Future for FramedWriteTask<T, U>
@@ -96,7 +111,7 @@ where
                         }
                     }
                     Poll::Ready(Err(err)) => {
-                        log::trace!("error sending data: {:?}", err);
+                        log::trace!("error during sending data: {:?}", err);
                         this.state.set_io_error(Some(err));
                         return Poll::Ready(());
                     }
@@ -124,6 +139,9 @@ where
                                 }
                                 Poll::Ready(Err(_)) => {
                                     this.state.set_wr_shutdown_complete();
+                                    log::trace!(
+                                        "write task is closed with err during flush"
+                                    );
                                     return Poll::Ready(());
                                 }
                                 _ => (),
@@ -139,6 +157,9 @@ where
                                 }
                                 Poll::Ready(Err(_)) => {
                                     this.state.set_wr_shutdown_complete();
+                                    log::trace!(
+                                        "write task is closed with err during shutdown"
+                                    );
                                     return Poll::Ready(());
                                 }
                                 _ => (),
@@ -152,6 +173,7 @@ where
                                 match Pin::new(&mut *io).poll_read(cx, &mut buf) {
                                     Poll::Ready(Ok(0)) | Poll::Ready(Err(_)) => {
                                         this.state.set_wr_shutdown_complete();
+                                        log::trace!("write task is closed");
                                         return Poll::Ready(());
                                     }
                                     Poll::Pending => break,