Example usage for io.netty.resolver.dns DnsQueryContext question

Introduction

In this page you can find the example usage for io.netty.resolver.dns DnsQueryContext question.

Prototype

DnsQuestion question

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Usage

From source file:io.vertx.core.dns.impl.fix.DnsQueryContextManager.java

License:Apache License

int add(DnsQueryContext qCtx) {
    final IntObjectMap<DnsQueryContext> contexts = getOrCreateContextMap(qCtx.nameServerAddr());

    int id = ThreadLocalRandom.current().nextInt(1, 65536);
    final int maxTries = 65535 << 1;
    int tries = 0;

    synchronized (contexts) {
        for (;;) {
            if (!contexts.containsKey(id)) {
                contexts.put(id, qCtx);/*from w  w  w .java2 s  .  co  m*/
                return id;
            }

            id = id + 1 & 0xFFFF;

            if (++tries >= maxTries) {
                throw new IllegalStateException("query ID space exhausted: " + qCtx.question());
            }
        }
    }
}

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