private void processPayloadState(
ChannelHandlerContext ctx, ByteBuf in, Http2FrameObserver observer) throws Http2Exception {
if (in.readableBytes() < payloadLength) {
// Wait until the entire payload has been read.
return;
}
// Get a view of the buffer for the size of the payload.
ByteBuf payload = in.readSlice(payloadLength);
// Read the payload and fire the frame event to the observer.
switch (frameType) {
case DATA:
readDataFrame(ctx, payload, observer);
break;
case HEADERS:
readHeadersFrame(ctx, payload, observer);
break;
case PRIORITY:
readPriorityFrame(ctx, payload, observer);
break;
case RST_STREAM:
readRstStreamFrame(ctx, payload, observer);
break;
case SETTINGS:
readSettingsFrame(ctx, payload, observer);
break;
case PUSH_PROMISE:
readPushPromiseFrame(ctx, payload, observer);
break;
case PING:
readPingFrame(ctx, payload, observer);
break;
case GO_AWAY:
readGoAwayFrame(ctx, payload, observer);
break;
case WINDOW_UPDATE:
readWindowUpdateFrame(ctx, payload, observer);
break;
case CONTINUATION:
readContinuationFrame(payload, observer);
break;
case ALT_SVC:
readAltSvcFrame(ctx, payload, observer);
break;
case BLOCKED:
observer.onBlockedRead(ctx, streamId);
break;
default:
// Should never happen.
throw protocolError("Unsupported frame type: %s", frameType);
}
// Go back to reading the next frame header.
state = State.FRAME_HEADER;
}
