private void readSettingsFrame(
ChannelHandlerContext ctx, ByteBuf payload, Http2FrameObserver observer)
throws Http2Exception {
if (flags.ack()) {
observer.onSettingsAckRead(ctx);
} else {
int numSettings = payloadLength / SETTING_ENTRY_LENGTH;
Http2Settings settings = new Http2Settings();
for (int index = 0; index < numSettings; ++index) {
short id = payload.readUnsignedByte();
long value = payload.readUnsignedInt();
switch (id) {
case SETTINGS_HEADER_TABLE_SIZE:
if (value < 0 || value > Integer.MAX_VALUE) {
throw protocolError("Invalid value for HEADER_TABLE_SIZE: %d", value);
}
settings.maxHeaderTableSize((int) value);
break;
case SETTINGS_COMPRESS_DATA:
if (value != 0 && value != 1) {
throw protocolError("Invalid value for COMPRESS_DATA: %d", value);
}
settings.allowCompressedData(value == 1);
break;
case SETTINGS_ENABLE_PUSH:
if (value != 0 && value != 1) {
throw protocolError("Invalid value for ENABLE_PUSH: %d", value);
}
settings.pushEnabled(value == 1);
break;
case SETTINGS_INITIAL_WINDOW_SIZE:
if (value < 0 || value > Integer.MAX_VALUE) {
throw protocolError("Invalid value for INITIAL_WINDOW_SIZE: %d", value);
}
settings.initialWindowSize((int) value);
break;
case SETTINGS_MAX_CONCURRENT_STREAMS:
if (value < 0 || value > Integer.MAX_VALUE) {
throw protocolError("Invalid value for MAX_CONCURRENT_STREAMS: %d", value);
}
settings.maxConcurrentStreams((int) value);
break;
default:
throw protocolError("Unsupport setting: %d", id);
}
}
observer.onSettingsRead(ctx, settings);
}
}
@Test
public void settingsFrameShouldMatch() throws Exception {
final Http2Settings settings = new Http2Settings();
settings.initialWindowSize(10);
settings.maxConcurrentStreams(1000);
settings.headerTableSize(4096);
runInChannel(
clientChannel,
new Http2Runnable() {
@Override
public void run() {
frameWriter.writeSettings(ctx(), newPromise(), settings);
}
});
awaitRequests();
verify(serverObserver).onSettingsRead(any(ChannelHandlerContext.class), eq(settings));
}