Github user allengeorge commented on a diff in the pull request:
https://github.com/apache/thrift/pull/1269#discussion_r116516987
--- Diff: lib/dart/lib/src/transport/t_framed_transport.dart ---
@@ -51,33 +58,112 @@ class TFramedTransport extends TBufferedTransport {
if (got > 0) return got;
}
- _readFrame();
+ // IMPORTANT: by the time you've got here,
+ // an entire frame is available for reading
return super.read(buffer, offset, length);
}
void _readFrame() {
- _transport.readAll(headerBytes, 0, headerByteCount);
- int size = headerBytes.buffer.asByteData().getUint32(0);
+ if (_body == null) {
+ bool gotFullHeader = _readFrameHeader();
+ if (!gotFullHeader) {
+ return;
+ }
+ }
+
+ _readFrameBody();
+ }
+
+ bool _readFrameHeader() {
+ var remainingHeaderBytes = headerByteCount - _receivedHeaderBytes;
- if (size < 0) {
+ int got = _transport.read(_headerBytes, _receivedHeaderBytes,
remainingHeaderBytes);
+ if (got < 0) {
throw new TTransportError(
- TTransportErrorType.UNKNOWN, "Read a negative frame size:
$size");
+ TTransportErrorType.UNKNOWN, "Socket closed during frame header
read");
}
- Uint8List buffer = new Uint8List(size);
- _transport.readAll(buffer, 0, size);
- _setReadBuffer(buffer);
+ _receivedHeaderBytes += got;
+
+ if (_receivedHeaderBytes == headerByteCount) {
+ int size = _headerBytes.buffer.asByteData().getUint32(0);
+
+ _receivedHeaderBytes = 0;
+
+ if (size < 0) {
+ throw new TTransportError(
+ TTransportErrorType.UNKNOWN, "Read a negative frame size:
$size");
+ }
+
+ _bodySize = size;
+ _body = new Uint8List(_bodySize);
+ _receivedBodyBytes = 0;
+
+ return true;
+ } else {
+ _registerForReadableBytes();
+ return false;
+ }
+ }
+
+ void _readFrameBody() {
+ var remainingBodyBytes = _bodySize - _receivedBodyBytes;
+
+ int got = _transport.read(_body, _receivedBodyBytes,
remainingBodyBytes);
+ if (got < 0) {
+ throw new TTransportError(
+ TTransportErrorType.UNKNOWN, "Socket closed during frame body
read");
+ }
+
+ _receivedBodyBytes += got;
+
+ if (_receivedBodyBytes == _bodySize) {
+ var body = _body;
+
+ _bodySize = 0;
+ _body = null;
+ _receivedBodyBytes = 0;
+
+ _setReadBuffer(body);
+
+ var completer = _frameCompleter;
+ _frameCompleter = null;
+ completer.complete(new Object());
--- End diff --
I was a little worried about returning the frame bytes, but I guess it
doesn't matter. Also, I assume that each call to `iterator` returns a
completely separate iterator with a view to the underlying buffer.
I'll change it. BTW, it's a little weird that `flush()` returns bytes...
---
If your project is set up for it, you can reply to this email and have your
reply appear on GitHub as well. If your project does not have this feature
enabled and wishes so, or if the feature is enabled but not working, please
contact infrastructure at infrastruct...@apache.org or file a JIRA ticket
with INFRA.
---
