isValidFrameHeader() — netty Function Reference

Architecture documentation for the isValidFrameHeader() function in SpdyFrameDecoder.java from the netty codebase.

Function java Buffer Allocators called by 1

Entity Profile

Buffer→ Allocators→ isValidFrameHeader() — netty Function Reference

Dependency Diagram

graph TD
  fe196e54_3dae_3168_c8af_687feab92143["isValidFrameHeader()"]
  d466aa70_56c1_4a3c_18e4_88294be3659b["SpdyFrameDecoder"]
  fe196e54_3dae_3168_c8af_687feab92143 -->|defined in| d466aa70_56c1_4a3c_18e4_88294be3659b
  d733ec80_8d45_78bf_73a3_4ca9a6e4e860["decode()"]
  d733ec80_8d45_78bf_73a3_4ca9a6e4e860 -->|calls| fe196e54_3dae_3168_c8af_687feab92143
  style fe196e54_3dae_3168_c8af_687feab92143 fill:#6366f1,stroke:#818cf8,color:#fff

Relationship Graph

Source Code

codec-http/src/main/java/io/netty/handler/codec/spdy/SpdyFrameDecoder.java lines 456–488

    private static boolean isValidFrameHeader(int streamId, int type, byte flags, int length) {
        switch (type) {
            case SPDY_DATA_FRAME:
                return streamId != 0;

            case SPDY_SYN_STREAM_FRAME:
                return length >= 10;

            case SPDY_SYN_REPLY_FRAME:
                return length >= 4;

            case SPDY_RST_STREAM_FRAME:
                return flags == 0 && length == 8;

            case SPDY_SETTINGS_FRAME:
                return length >= 4;

            case SPDY_PING_FRAME:
                return length == 4;

            case SPDY_GOAWAY_FRAME:
                return length == 8;

            case SPDY_HEADERS_FRAME:
                return length >= 4;

            case SPDY_WINDOW_UPDATE_FRAME:
                return length == 8;

            default:
                return true;
        }
    }