ZeroConfSupport.java 文件源码

public ZeroConfSupport(String zone, int port, String name, Map properties) {
    //if version 3 is available, use it to constuct a serviceInfo instance, otherwise support the version1 API
    boolean isVersion3 = false;
    try {
        //create method is in version 3, not version 1
        jmDNSClass.getMethod("create", null);
        isVersion3 = true;
    } catch (NoSuchMethodException e) {
        //no-op
    }

    if (isVersion3) {
        LogLog.debug("using JmDNS version 3 to construct serviceInfo instance");
        serviceInfo = buildServiceInfoVersion3(zone, port, name, properties);
    } else {
        LogLog.debug("using JmDNS version 1.0 to construct serviceInfo instance");
        serviceInfo = buildServiceInfoVersion1(zone, port, name, properties);
    }
}