Fixed bug in output stream that was causing large files to be written…

… incorrectly.

src/main/java/io/fusionauth/http/io/ChunkedOutputStream.java

@@ -82,8 +82,8 @@ public void write(byte[] b) throws IOException {
  public void write(byte[] b, int offset, int length) throws IOException {
  int index = offset;
  while (index < length) {
- int wrote = Math.min(buffer.length - bufferIndex, length);
- System.arraycopy(b, 0, buffer, bufferIndex, wrote);
+ int wrote = Math.min(buffer.length - bufferIndex, length - index);
+ System.arraycopy(b, index, buffer, bufferIndex, wrote);
  bufferIndex += wrote;
  index += wrote;
 

src/test/java/io/fusionauth/http/CoreTest.java

@@ -26,6 +26,8 @@
 import java.net.http.HttpRequest.BodyPublishers;
 import java.net.http.HttpResponse.BodySubscribers;
 import java.nio.charset.StandardCharsets;
+import java.nio.file.Files;
+import java.nio.file.Paths;
 import java.security.SecureRandom;
 import java.security.cert.Certificate;
 import java.time.Duration;
@@ -319,6 +321,35 @@ public void keepAliveTimeout() {
  }
  }
 
+ @Test(dataProvider = "schemes")
+ public void largeCSS(String scheme) throws Exception {
+ var css = Files.readString(Paths.get("src/test/resources/fontawesome-6.0.0.min.css"), StandardCharsets.UTF_8);
+
+ HTTPHandler handler = (req, res) -> {
+ res.setStatus(200);
+
+ try {
+ var out = res.getOutputStream();
+ out.write(css.getBytes(StandardCharsets.UTF_8));
+ out.close();
+ } catch (Throwable t) {
+ System.out.println(t);
+ }
+ };
+
+ try (var client = makeClient(scheme, null); var ignore = makeServer(scheme, handler).start()) {
+ URI uri = makeURI(scheme, "");
+ HttpRequest request = HttpRequest.newBuilder()
+ .uri(uri)
+ .GET()
+ .build();
+
+ var response = client.send(request, r -> BodySubscribers.ofString(StandardCharsets.UTF_8));
+ assertEquals(response.statusCode(), 200);
+ assertEquals(response.body(), css);
+ }
+ }
+
  @Test
  public void logger() {
  // Test replacement values and ensure we are handling special regex characters.