Added the ability to send an http request from a reader

crates/nu-command/src/network/http/client.rs

@@ -216,13 +216,13 @@ pub fn send_request2(
             send_cancellable_request(&request_url, Box::new(|| request.call()), ctrl_c)
         }
         HttpBody::ByteStream(byte_stream) => {
-            let bytes = byte_stream.into_bytes()?;
+            let req = if let Some(content_type) = content_type {
+                request.set("Content-Type", &content_type)
+            } else {
+                request
+            };
 
-            send_cancellable_request(
-                &request_url,
-                Box::new(move || request.send_bytes(&bytes)),
-                ctrl_c,
-            )
+            send_cancellable_request_bytes(&request_url, req, byte_stream, ctrl_c)
         }
         HttpBody::Value(body) => {
             let body_type = match content_type {
@@ -352,6 +352,61 @@ fn send_cancellable_request(
     }
 }
 
+// Helper method used to make blocking HTTP request calls cancellable with ctrl+c
+// ureq functions can block for a long time (default 30s?) while attempting to make an HTTP connection
+fn send_cancellable_request_bytes(
+    request_url: &str,
+    request: Request,
+    byte_stream: ByteStream,
+    ctrl_c: Option<Arc<AtomicBool>>,
+) -> Result<Response, ShellErrorOrRequestError> {
+    let (tx, rx) = mpsc::channel::<Result<Response, ShellErrorOrRequestError>>();
+    let request_url_string = request_url.to_string();
+
+    // Make the blocking request on a background thread...
+    std::thread::Builder::new()
+        .name("HTTP requester".to_string())
+        .spawn(move || {
+            let ret = byte_stream
+                .reader()
+                .ok_or_else(|| {
+                    ShellErrorOrRequestError::ShellError(ShellError::GenericError {
+                        error: "Could not read byte stream".to_string(),
+                        msg: "".into(),
+                        span: None,
+                        help: None,
+                        inner: vec![],
+                    })
+                })
+                .and_then(|reader| {
+                    request.send(reader).map_err(|e| {
+                        ShellErrorOrRequestError::RequestError(request_url_string, Box::new(e))
+                    })
+                });
+
+            // may fail if the user has cancelled the operation
+            let _ = tx.send(ret);
+        })
+        .map_err(ShellError::from)?;
+
+    // ...and poll the channel for responses
+    loop {
+        if nu_utils::ctrl_c::was_pressed(&ctrl_c) {
+            // Return early and give up on the background thread. The connection will either time out or be disconnected
+            return Err(ShellErrorOrRequestError::ShellError(
+                ShellError::InterruptedByUser { span: None },
+            ));
+        }
+
+        // 100ms wait time chosen arbitrarily
+        match rx.recv_timeout(Duration::from_millis(100)) {
+            Ok(result) => return result,
+            Err(RecvTimeoutError::Timeout) => continue,
+            Err(RecvTimeoutError::Disconnected) => panic!("http response channel disconnected"),
+        }
+    }
+}
+
 pub fn request_set_timeout(
     timeout: Option<Value>,
     mut request: Request,