private void setSettings(Settings settings) {
// TODO: For HTTP/2.0, also adjust the stream flow control window size
// by the difference between the new value and the old value.
assert (Thread.holdsLock(connection)); // Because 'settings' is guarded by 'connection'.
this.writeWindowSize =
settings != null
? settings.getInitialWindowSize(Settings.DEFAULT_INITIAL_WINDOW_SIZE)
: Settings.DEFAULT_INITIAL_WINDOW_SIZE;
}
private SpdyConnection(Builder builder) {
protocol = builder.protocol;
pushObserver = builder.pushObserver;
client = builder.client;
handler = builder.handler;
nextStreamId = builder.client ? 1 : 2;
nextPingId = builder.client ? 1 : 2;
// Flow control was designed more for servers, or proxies than edge clients.
// If we are a client, set the flow control window to 16MiB. This avoids
// thrashing window updates every 64KiB, yet small enough to avoid blowing
// up the heap.
if (builder.client) {
okHttpSettings.set(Settings.INITIAL_WINDOW_SIZE, 0, 16 * 1024 * 1024);
}
hostName = builder.hostName;
Variant variant;
if (protocol == Protocol.HTTP_2) {
variant = new Http20Draft09();
} else if (protocol == Protocol.SPDY_3) {
variant = new Spdy3();
} else {
throw new AssertionError(protocol);
}
bytesLeftInWriteWindow = peerSettings.getInitialWindowSize(DEFAULT_INITIAL_WINDOW_SIZE);
frameReader = variant.newReader(builder.source, client);
frameWriter = variant.newWriter(builder.sink, client);
maxFrameSize = variant.maxFrameSize();
readerRunnable = new Reader();
new Thread(readerRunnable).start(); // Not a daemon thread.
}