Pascal Stücker · Ngoc Quang Truong
--- a/java/org.eclipse.set.browser/src/org/eclipse/set/browser/cef/handlers/ResourceHandler.java
+++ b/java/org.eclipse.set.browser/src/org/eclipse/set/browser/cef/handlers/ResourceHandler.java
 			final long response_length, final long redirectUrl)
 			throws IOException {
 		response.cefResponse = cef_response;
-		this.requestHandler.onRequest(request, response);
+		
+		// Ensure mime type and a response is always set
+		response.setMimeType("text/plain");
+		response.setResponseData("");
+
+		try {
--- a/java/org.eclipse.set.browser/src/org/eclipse/set/browser/cef/handlers/ResourceHandler.java
+++ b/java/org.eclipse.set.browser/src/org/eclipse/set/browser/cef/handlers/ResourceHandler.java
 					bytes.length);
 			return 1;
 		}
-		// No further bytes
+		// No further bytes, close the input stream
+		response.responseStream.close();
--- a/java/org.eclipse.set.browser/src/org/eclipse/set/browser/cef/handlers/SchemeHandlerFactory.java
+++ b/java/org.eclipse.set.browser/src/org/eclipse/set/browser/cef/handlers/SchemeHandlerFactory.java
 	private long create(final long self, final long browser_id,
 			final long frame, final long scheme_name, final long request) {
 		// Find the associated Chromium instance for this browser
-		final Optional<Chromium> browser = this.browsers.stream().filter(
-				b -> ChromiumLib.cefswt_is_same(b.getCEFBrowser(), browser_id))
--- a/native/chromium_jni_macro/src/jni_wrap_impl.rs
+++ b/native/chromium_jni_macro/src/jni_wrap_impl.rs
            "* mut c_char" | "* const c_char" => (
                quote! { -> jni::sys::jstring },
                quote! {
+                    if result.is_null() {