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authorMike Lockwood <lockwood@google.com>2012-03-21 12:26:23 -0700
committerMike Lockwood <lockwood@google.com>2012-03-21 12:26:23 -0700
commitf4eb7466d5c09098f9dc54137ed3235e3c43fc9f (patch)
tree56e1bf5e433e60e3a18d5a9d08b7d55a64d8ae1d /src/javax/jmdns/impl/constants/DNSConstants.java
parent19376825c9e562c188aef9ccd09a7220bd3c0a20 (diff)
parent76f0067cea0428b683cba2f187d81e723658f964 (diff)
downloadjmdns-f4eb7466d5c09098f9dc54137ed3235e3c43fc9f.tar.gz
Merge remote-tracking branch 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Diffstat (limited to 'src/javax/jmdns/impl/constants/DNSConstants.java')
-rw-r--r--src/javax/jmdns/impl/constants/DNSConstants.java61
1 files changed, 61 insertions, 0 deletions
diff --git a/src/javax/jmdns/impl/constants/DNSConstants.java b/src/javax/jmdns/impl/constants/DNSConstants.java
new file mode 100644
index 0000000..ce9f928
--- /dev/null
+++ b/src/javax/jmdns/impl/constants/DNSConstants.java
@@ -0,0 +1,61 @@
+// Copyright 2003-2005 Arthur van Hoff, Rick Blair
+// Licensed under Apache License version 2.0
+// Original license LGPL
+
+package javax.jmdns.impl.constants;
+
+/**
+ * DNS constants.
+ *
+ * @author Arthur van Hoff, Jeff Sonstein, Werner Randelshofer, Pierre Frisch, Rick Blair
+ */
+public final class DNSConstants {
+ // http://www.iana.org/assignments/dns-parameters
+
+ // changed to final class - jeffs
+ public static final String MDNS_GROUP = "224.0.0.251";
+ public static final String MDNS_GROUP_IPV6 = "FF02::FB";
+ public static final int MDNS_PORT = Integer.parseInt(System.getProperty("net.mdns.port", "5353"));
+ public static final int DNS_PORT = 53;
+
+ // One hour expiration time
+ public static final int DNS_TTL = 25; //60 * 60;
+
+ public static final int MAX_MSG_TYPICAL = 1460;
+ public static final int MAX_MSG_ABSOLUTE = 8972;
+
+ public static final int FLAGS_QR_MASK = 0x8000; // Query response mask
+ public static final int FLAGS_QR_QUERY = 0x0000; // Query
+ public static final int FLAGS_QR_RESPONSE = 0x8000; // Response
+
+ public static final int FLAGS_AA = 0x0400; // Authorative answer
+ public static final int FLAGS_TC = 0x0200; // Truncated
+ public static final int FLAGS_RD = 0x0100; // Recursion desired
+ public static final int FLAGS_RA = 0x8000; // Recursion available
+
+ public static final int FLAGS_Z = 0x0040; // Zero
+ public static final int FLAGS_AD = 0x0020; // Authentic data
+ public static final int FLAGS_CD = 0x0010; // Checking disabled
+
+ // Time Intervals for various functions
+
+ public static final int SHARED_QUERY_TIME = 20; // milliseconds before send shared query
+ public static final int QUERY_WAIT_INTERVAL = 225; // milliseconds between query loops.
+ public static final int PROBE_WAIT_INTERVAL = 250; // milliseconds between probe loops.
+ public static final int RESPONSE_MIN_WAIT_INTERVAL = 20; // minimal wait interval for response.
+ public static final int RESPONSE_MAX_WAIT_INTERVAL = 115; // maximal wait interval for response
+ public static final int PROBE_CONFLICT_INTERVAL = 1000; // milliseconds to wait after conflict.
+ public static final int PROBE_THROTTLE_COUNT = 10; // After x tries go 1 time a sec. on probes.
+ public static final int PROBE_THROTTLE_COUNT_INTERVAL = 5000; // We only increment the throttle count, if the previous increment is inside this interval.
+ public static final int ANNOUNCE_WAIT_INTERVAL = 1000; // milliseconds between Announce loops.
+ public static final int RECORD_REAPER_INTERVAL = 10000; // milliseconds between cache cleanups.
+ public static final int RECORD_EXPIRY_DELAY = 1; // This is 1s delay used in ttl and therefore in seconds
+ public static final int KNOWN_ANSWER_TTL = 120;
+ public static final int ANNOUNCED_RENEWAL_TTL_INTERVAL = DNS_TTL * 500; // 50% of the TTL in milliseconds
+
+ public static final long CLOSE_TIMEOUT = ANNOUNCE_WAIT_INTERVAL * 5L;
+ public static final long SERVICE_INFO_TIMEOUT = ANNOUNCE_WAIT_INTERVAL * 6L;
+
+ public static final int NETWORK_CHECK_INTERVAL = 10 * 1000; // 10 secondes
+
+}