Add RequestBuilder::fetch_mode_no_cors()

2020-01-06 12:54:24 +09:00
parent 22fe6566ff
commit 6004623784
4 changed files with 37 additions and 0 deletions
--- a/src/wasm/client.rs
+++ b/src/wasm/client.rs
@@ -120,6 +120,11 @@ async fn fetch(req: Request) -> crate::Result<Response> {
    }
    init.headers(&js_headers.into());

+    // When req.cors is true, do nothing because the default mode is 'cors'
+    if !req.cors {
+        init.mode(web_sys::RequestMode::NoCors);
+    }
+
    if let Some(body) = req.body() {
        let body_bytes: &[u8] = body.bytes();
        let body_array: Uint8Array = body_bytes.into();
--- a/src/wasm/request.rs
+++ b/src/wasm/request.rs
@@ -13,6 +13,7 @@ pub struct Request {
    url: Url,
    headers: HeaderMap,
    body: Option<Body>,
+    pub(super) cors: bool,
 }

 /// A builder to construct the properties of a `Request`.
@@ -28,6 +29,7 @@ impl Request {
            url,
            headers: HeaderMap::new(),
            body: None,
+            cors: true,
        }
    }

@@ -119,6 +121,22 @@ impl RequestBuilder {
        self
    }

+    /// Disable CORS on fetching the request.
+    ///
+    /// # WASM
+    ///
+    /// This option is only effective with WebAssembly target.
+    ///
+    /// The [request mode][mdn] will be set to 'no-cors'.
+    ///
+    /// [mdn]: https://developer.mozilla.org/en-US/docs/Web/API/Request/mode
+    pub fn fetch_mode_no_cors(mut self) -> RequestBuilder {
+        if let Ok(ref mut req) = self.request {
+            req.cors = false;
+        }
+        self
+    }
+
    /// Constructs the Request and sends it to the target URL, returning a
    /// future Response.
    ///