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OpenNMS API 1.2.3 | |||||||||
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java.lang.Objectorg.opennms.protocols.ntp.NtpMessage
Field Summary | |
byte |
leapIndicator
This is a two-bit code warning of an impending leap second to be inserted/deleted in the last minute of the current day. |
byte |
mode
This value indicates the mode, with values defined as follows: Mode Meaning ---- ------- 0 reserved 1 symmetric active 2 symmetric passive 3 client 4 server 5 broadcast 6 reserved for NTP control message 7 reserved for private use In unicast and anycast modes, the client sets this field to 3 (client) in the request and the server sets it to 4 (server) in the reply. |
double |
originateTimestamp
This is the time at which the request departed the client for the server, in seconds since 00:00 1-Jan-1900. |
byte |
pollInterval
This value indicates the maximum interval between successive messages, in seconds to the nearest power of two. |
byte |
precision
This value indicates the precision of the local clock, in seconds to the nearest power of two. |
double |
receiveTimestamp
This is the time at which the request arrived at the server, in seconds since 00:00 1-Jan-1900. |
byte[] |
referenceIdentifier
This is a 4-byte array identifying the particular reference source. |
double |
referenceTimestamp
This is the time at which the local clock was last set or corrected, in seconds since 00:00 1-Jan-1900. |
double |
rootDelay
This value indicates the total roundtrip delay to the primary reference source, in seconds. |
double |
rootDispersion
This value indicates the nominal error relative to the primary reference source, in seconds. |
short |
stratum
This value indicates the stratum level of the local clock, with values defined as follows: Stratum Meaning ---------------------------------------------- 0 unspecified or unavailable 1 primary reference (e.g., radio clock) 2-15 secondary reference (via NTP or SNTP) 16-255 reserved |
double |
transmitTimestamp
This is the time at which the reply departed the server for the client, in seconds since 00:00 1-Jan-1900. |
byte |
version
This value indicates the NTP/SNTP version number. |
Constructor Summary | |
NtpMessage()
Constructs a new NtpMessage in client -> server mode, and sets the transmit timestamp to the current time. |
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NtpMessage(byte[] array)
Constructs a new NtpMessage from an array of bytes. |
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NtpMessage(byte leapIndicator,
byte version,
byte mode,
short stratum,
byte pollInterval,
byte precision,
double rootDelay,
double rootDispersion,
byte[] referenceIdentifier,
double referenceTimestamp,
double originateTimestamp,
double receiveTimestamp,
double transmitTimestamp)
Constructs a new NtpMessage |
Method Summary | |
static double |
decodeTimestamp(byte[] array,
int pointer)
Will read 8 bytes of a message beginning at pointer and
return it as a double, according to the NTP 64-bit timestamp format. |
static void |
encodeTimestamp(byte[] array,
int pointer,
double timestamp)
Encodes a timestamp in the specified position in the message |
static java.lang.String |
referenceIdentifierToString(byte[] ref,
short stratum,
byte version)
Returns a string representation of a reference identifier according to the rules set out in RFC 2030. |
static java.lang.String |
timestampToString(double timestamp)
Returns a timestamp (number of seconds since 00:00 1-Jan-1900) as a formatted date/time string. |
byte[] |
toByteArray()
This method constructs the data bytes of a raw NTP packet. |
java.lang.String |
toString()
Returns a string representation of a NtpMessage |
static short |
unsignedByteToShort(byte b)
Converts an unsigned byte to a short. |
Methods inherited from class java.lang.Object |
clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait |
Field Detail |
public byte leapIndicator
public byte version
public byte mode
public short stratum
public byte pollInterval
public byte precision
public double rootDelay
public double rootDispersion
public byte[] referenceIdentifier
public double referenceTimestamp
public double originateTimestamp
public double receiveTimestamp
public double transmitTimestamp
Constructor Detail |
public NtpMessage(byte[] array)
public NtpMessage(byte leapIndicator, byte version, byte mode, short stratum, byte pollInterval, byte precision, double rootDelay, double rootDispersion, byte[] referenceIdentifier, double referenceTimestamp, double originateTimestamp, double receiveTimestamp, double transmitTimestamp)
public NtpMessage()
Method Detail |
public byte[] toByteArray()
public java.lang.String toString()
public static short unsignedByteToShort(byte b)
public static double decodeTimestamp(byte[] array, int pointer)
pointer
and
return it as a double, according to the NTP 64-bit timestamp format.
public static void encodeTimestamp(byte[] array, int pointer, double timestamp)
public static java.lang.String timestampToString(double timestamp)
public static java.lang.String referenceIdentifierToString(byte[] ref, short stratum, byte version)
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OpenNMS API 1.2.3 | |||||||||
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