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preProcessFrame() — netty Function Reference

Architecture documentation for the preProcessFrame() function in DefaultHttp2FrameReader.java from the netty codebase.

Function java Buffer Allocators called by 1

Entity Profile

Dependency Diagram

graph TD
  969e7b9f_005c_0301_2983_56e986f1d510["preProcessFrame()"]
  3768d640_58c2_34e7_3d69_a4b578e0d11a["DefaultHttp2FrameReader"]
  969e7b9f_005c_0301_2983_56e986f1d510 -->|defined in| 3768d640_58c2_34e7_3d69_a4b578e0d11a
  f53e0d0e_4159_3b85_497b_bc55cfb15681["readFrame()"]
  f53e0d0e_4159_3b85_497b_bc55cfb15681 -->|calls| 969e7b9f_005c_0301_2983_56e986f1d510
  style 969e7b9f_005c_0301_2983_56e986f1d510 fill:#6366f1,stroke:#818cf8,color:#fff

Relationship Graph

Source Code

codec-http2/src/main/java/io/netty/handler/codec/http2/DefaultHttp2FrameReader.java lines 178–195

    private boolean preProcessFrame(ByteBuf in) throws Http2Exception {
        // Start pre-processing the frame by reading the necessary data
        // in common between all frame types
        if (in.readableBytes() < FRAME_HEADER_LENGTH) {
            // Wait until the entire framing section has been read.
            return false;
        }
        payloadLength = in.readUnsignedMedium();
        if (payloadLength > maxFrameSize) {
            throw connectionError(FRAME_SIZE_ERROR, "Frame length: %d exceeds maximum: %d", payloadLength,
                                  maxFrameSize);
        }
        frameType = in.readByte();
        flags = new Http2Flags(in.readUnsignedByte());
        streamId = readUnsignedInt(in);
        readingHeaders = false;
        return true;
    }

Domain

Subdomains

Defined In

Called By

Source

Frequently Asked Questions

What does preProcessFrame() do?
preProcessFrame() is a function in the netty codebase, defined in codec-http2/src/main/java/io/netty/handler/codec/http2/DefaultHttp2FrameReader.java.
Where is preProcessFrame() defined?
preProcessFrame() is defined in codec-http2/src/main/java/io/netty/handler/codec/http2/DefaultHttp2FrameReader.java at line 178.
What calls preProcessFrame()?
preProcessFrame() is called by 1 function(s): readFrame.

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