simplify AnyBody and BodySize (#2446)

awc/src/client/h1proto.rs

@@ -70,7 +70,7 @@ where
     // RFC: https://tools.ietf.org/html/rfc7231#section-5.1.1
     let is_expect = if head.as_ref().headers.contains_key(EXPECT) {
         match body.size() {
-            BodySize::None | BodySize::Empty | BodySize::Sized(0) => {
+            BodySize::None | BodySize::Sized(0) => {
                 let keep_alive = framed.codec_ref().keepalive();
                 framed.io_mut().on_release(keep_alive);
 
@@ -104,7 +104,7 @@ where
     if do_send {
         // send request body
         match body.size() {
-            BodySize::None | BodySize::Empty | BodySize::Sized(0) => {}
+            BodySize::None | BodySize::Sized(0) => {}
             _ => send_body(body, pin_framed.as_mut()).await?,
         };
 

awc/src/client/h2proto.rs

@@ -36,10 +36,7 @@ where
 
     let head_req = head.as_ref().method == Method::HEAD;
     let length = body.size();
-    let eof = matches!(
-        length,
-        BodySize::None | BodySize::Empty | BodySize::Sized(0)
-    );
+    let eof = matches!(length, BodySize::None | BodySize::Sized(0));
 
     let mut req = Request::new(());
     *req.uri_mut() = head.as_ref().uri.clone();
@@ -52,13 +49,11 @@ where
     // Content length
     let _ = match length {
         BodySize::None => None,
-        BodySize::Stream => {
-            skip_len = false;
-            None
-        }
-        BodySize::Empty => req
+
+        BodySize::Sized(0) => req
             .headers_mut()
             .insert(CONTENT_LENGTH, HeaderValue::from_static("0")),
+
         BodySize::Sized(len) => {
             let mut buf = itoa::Buffer::new();
 
@@ -67,6 +62,11 @@ where
                 HeaderValue::from_str(buf.format(len)).unwrap(),
             )
         }
+
+        BodySize::Stream => {
+            skip_len = false;
+            None
+        }
     };
 
     // Extracting extra headers from RequestHeadType. HeaderMap::new() does not allocate.

awc/src/middleware/redirect.rs

@@ -194,7 +194,7 @@ where
                             match body {
                                 Some(ref bytes) => Body::Bytes(bytes.clone()),
                                 // TODO: should this be Body::Empty or Body::None.
-                                _ => Body::Empty,
+                                _ => Body::empty(),
                             }
                         } else {
                             body = None;

awc/src/sender.rs

@@ -297,7 +297,7 @@ impl RequestSender {
         timeout: Option<Duration>,
         config: &ClientConfig,
     ) -> SendClientRequest {
-        self.send_body(addr, response_decompress, timeout, config, Body::Empty)
+        self.send_body(addr, response_decompress, timeout, config, Body::empty())
     }
 
     fn set_header_if_none<V>(&mut self, key: HeaderName, value: V) -> Result<(), HttpError>