PerMessageDeflate.java 文件源码

@Override
public Extension getExtensionResponse() {
    Extension result = new WsExtension(NAME);

    List<Extension.Parameter> params = result.getParameters();

    if (!serverContextTakeover) {
        params.add(new WsExtensionParameter(SERVER_NO_CONTEXT_TAKEOVER, null));
    }
    if (serverMaxWindowBits != -1) {
        params.add(new WsExtensionParameter(SERVER_MAX_WINDOW_BITS,
                Integer.toString(serverMaxWindowBits)));
    }
    if (!clientContextTakeover) {
        params.add(new WsExtensionParameter(CLIENT_NO_CONTEXT_TAKEOVER, null));
    }
    if (clientMaxWindowBits != -1) {
        params.add(new WsExtensionParameter(CLIENT_MAX_WINDOW_BITS,
                Integer.toString(clientMaxWindowBits)));
    }

    return result;
}