public static int defaultHttp1MaxInitialLineLength() {
        return DEFAULT_MAX_HTTP1_INITIAL_LINE_LENGTH;
    }
Returns the default maximum length of an HTTP/1 initial line.
Note that this flag has no effect if a user specified the value explicitly via
{@link ServerBuilder#http1MaxInitialLineLength(int)} or
{@link ClientFactoryBuilder#http1MaxInitialLineLength(int)}.

<p>This default value of this flag is
{@value DefaultFlagsProvider#DEFAULT_HTTP1_MAX_INITIAL_LINE_LENGTH}.
Specify the {@code -Dcom.linecorp.armeria.defaultHttp1MaxInitialLineLength=<integer>} JVM option
to override the default value.
core/src/main/java/com/linecorp/armeria/common/Flags.java