onDataRead() — netty Function Reference

Architecture documentation for the onDataRead() function in Http2EmptyDataFrameListener.java from the netty codebase.

Function java Buffer Allocators

Entity Profile

Buffer→ Allocators→ onDataRead() — netty Function Reference

Dependency Diagram

graph TD
  980dae73_1356_03ac_a545_834e26bc18cf["onDataRead()"]
  03c51870_f3be_7445_5544_6b0f3210decf["Http2EmptyDataFrameListener"]
  980dae73_1356_03ac_a545_834e26bc18cf -->|defined in| 03c51870_f3be_7445_5544_6b0f3210decf
  style 980dae73_1356_03ac_a545_834e26bc18cf fill:#6366f1,stroke:#818cf8,color:#fff

Relationship Graph

Source Code

codec-http2/src/main/java/io/netty/handler/codec/http2/Http2EmptyDataFrameListener.java lines 37–50

    @Override
    public int onDataRead(ChannelHandlerContext ctx, int streamId, ByteBuf data, int padding, boolean endOfStream)
            throws Http2Exception {
        if (endOfStream || data.isReadable()) {
            emptyDataFrames = 0;
        } else if (emptyDataFrames++ == maxConsecutiveEmptyFrames && !violationDetected) {
            violationDetected = true;
            throw Http2Exception.connectionError(Http2Error.ENHANCE_YOUR_CALM,
                    "Maximum number %d of empty data frames without end_of_stream flag received",
                    maxConsecutiveEmptyFrames);
        }

        return super.onDataRead(ctx, streamId, data, padding, endOfStream);
    }