better SharedBytes usage for h2

README.md

@@ -76,12 +76,12 @@ Each result is best of five runs. All measurements are req/sec.
 
 Name | 1 thread | 1 pipeline | 3 thread | 3 pipeline | 8 thread | 8 pipeline
 ---- | -------- | ---------- | -------- | ---------- | -------- | ----------
-Actix | 81400 | 710200 | 121000 | 1684000 | 106300 | 2206000
+Actix | 81.400 | 710.200 | 121.000 | 1.684.000 | 106.300 | 2.206.000
-Gotham | 61000 | 178000 |   |   |   |
+Gotham | 61..000 | 178.000 |   |   |   |
-Iron |   |   |   |   | 94500 | 78000
+Iron |   |   |   |   | 94.500 | 78.000
-Rocket |   |   |   |   | 95500 | failed
+Rocket |   |   |   |   | 95.500 | failed
-Shio | 71800 | 317800 |   |   |   |   |
+Shio | 71.800 | 317.800 |   |   |   |   |
-tokio-minihttp | 106900 | 1047000 |   |   |   |
+tokio-minihttp | 106.900 | 1.047.000 |   |   |   |
 
 Some notes on results. Iron and Rocket got tested with 8 threads,
 which showed best results. Gothan and tokio-minihttp seem does not support

src/encoding.rs

@@ -569,7 +569,7 @@ impl ContentEncoder {
     #[inline(always)]
     pub fn write_eof(&mut self) -> Result<(), io::Error> {
         let encoder = mem::replace(
-            self, ContentEncoder::Identity(TransferEncoding::eof(SharedBytes::default())));
+            self, ContentEncoder::Identity(TransferEncoding::eof(SharedBytes::empty())));
 
         match encoder {
             ContentEncoder::Br(encoder) => {

src/h2.rs

@@ -246,11 +246,15 @@ impl Entry {
         // Payload and Content-Encoding
         let (psender, payload) = Payload::new(false);
 
-        let mut req = HttpRequest::new(
+        let msg = settings.get_http_message();
-            parts.method, parts.uri, parts.version, parts.headers, Some(payload));
+        msg.get_mut().uri = parts.uri;
+        msg.get_mut().method = parts.method;
+        msg.get_mut().version = parts.version;
+        msg.get_mut().headers = parts.headers;
+        msg.get_mut().payload = Some(payload);
+        msg.get_mut().addr = addr;
 
-        // set remote addr
+        let mut req = HttpRequest::from_message(msg);
-        req.set_peer_addr(addr);
 
         // Payload sender
         let psender = PayloadType::new(req.headers(), psender);
@@ -270,7 +274,7 @@ impl Entry {
         Entry {task: task.unwrap_or_else(|| Pipeline::error(HTTPNotFound)),
                payload: psender,
                recv: recv,
-               stream: H2Writer::new(resp),
+               stream: H2Writer::new(resp, settings.get_shared_bytes()),
                flags: EntryFlags::empty(),
                capacity: 0,
         }

src/h2writer.rs

@@ -31,17 +31,19 @@ pub(crate) struct H2Writer {
     encoder: PayloadEncoder,
     flags: Flags,
     written: u64,
+    buffer: SharedBytes,
 }
 
 impl H2Writer {
 
-    pub fn new(respond: Respond<Bytes>) -> H2Writer {
+    pub fn new(respond: Respond<Bytes>, buf: SharedBytes) -> H2Writer {
         H2Writer {
             respond: respond,
             stream: None,
-            encoder: PayloadEncoder::empty(SharedBytes::default()),
+            encoder: PayloadEncoder::empty(buf.clone()),
             flags: Flags::empty(),
             written: 0,
+            buffer: buf,
         }
     }
 
@@ -116,7 +118,7 @@ impl Writer for H2Writer {
 
         // prepare response
         self.flags.insert(Flags::STARTED);
-        self.encoder = PayloadEncoder::new(SharedBytes::default(), req, msg);
+        self.encoder = PayloadEncoder::new(self.buffer.clone(), req, msg);
         if let Body::Empty = *msg.body() {
             self.flags.insert(Flags::EOF);
         }

src/helpers.rs

@@ -99,6 +99,10 @@ impl Drop for SharedBytes {
 
 impl SharedBytes {
 
+    pub fn empty() -> Self {
+        SharedBytes(None, None)
+    }
+
     pub fn new(bytes: Rc<BytesMut>, pool: Rc<SharedBytesPool>) -> SharedBytes {
         SharedBytes(Some(bytes), Some(pool))
     }

src/httprequest.rs

@@ -154,7 +154,6 @@ impl<S> HttpRequest<S> {
     // get mutable reference for inner message
     // mutable reference should not be returned as result for request's method
     #[inline]
-    #[allow(mutable_transmutes)]
     #[cfg_attr(feature = "cargo-clippy", allow(mut_from_ref))]
     fn as_mut(&self) -> &mut HttpMessage {
         self.0.get_mut()