Package net.i2p.util

These classes define the several useful utilities used throughout the router and applications.

Interface Summary

Interface	Description
BandwidthEstimator	A Westwood bandwidth estimator
Clock.ClockUpdateListener
EepGet.StatusListener	Callback interface
EventDispatcher	Event dispatching interface.
I2PProperties.I2PPropertyCallback
I2PThread.OOMEventListener
SimpleTimer.TimedEvent	Simple interface for events to be queued up and notified on expiration
TryCache.ObjectFactory<T>	Something that creates objects of the type cached by this cache

Class Summary

Class	Description
Addresses	Methods to get the local addresses, and other IP utilities
ByteArrayStream	OutputStream to InputStream adapter.
ByteCache	Cache the objects frequently used to reduce memory churn.
Clock	Alternate location for determining the time which takes into account an offset.
CommandLine	Simple command line access to various utilities.
ConcurrentHashSet<E>	Implement on top of a ConcurrentHashMap with a dummy value.
ConvertToHash	Convert any kind of destination String to a hash Supported: Base64 dest Base64 dest.i2p Base64 Hash Base64 Hash.i2p Base32 Hash Base32 desthash.b32.i2p example.i2p
DNSOverHTTPS	Simple implemetation of DNS over HTTPS.
EepGet	EepGet [-p 127.0.0.1:4444] [-n #retries] [-o outputFile] [-m markSize lineLen] url
EepHead	This is a quick hack to get a working EepHead, primarily for the following usage:
EventDispatcherImpl	An implementation of the EventDispatcher interface.
Executor	Deprecated - used only by SimpleTimer
FileLogWriter	File-based log writer thread that pulls log records from the LogManager, writes them to the current logfile, and rotates the logs as necessary.
FileSuffixFilter	A FileFilter that accepts regular files with a suffix and optionally a prefix, case-insensitive.
FileUtil	General helper methods for messing with files These are static methods that do NOT convert arguments to absolute paths for a particular context and directory.
FortunaRandomSource	Wrapper around GNU-Crypto's Fortuna PRNG.
HexDump	Hexdump class (well, it's actually a namespace with some functions, but let's stick with java terminology :-).
I2PAppThread	Like I2PThread but with per-thread OOM listeners, rather than a static router-wide listener list, so that an OOM in an app won't call the router listener to shutdown the whole router.
I2PProperties	This class contains a number of properties ((key,value)-pairs).
I2PSSLSocketFactory	Loads trusted ASCII certs from ~/.i2p/certificates/ and $I2P/certificates/.
I2PThread	Preferred over Thread for all router uses.
InternalServerSocket	A simple in-JVM ServerSocket using Piped Streams.
InternalSocket	A simple in-JVM Socket using Piped Streams.
KeyRing	simple
LHMCache<K,V>	A LinkedHashMap with a maximum size, for use as an LRU cache.
Log	Wrapper class for whatever logging system I2P uses.
LogConsoleBuffer	Offer a glimpse into the last few console messages generated.
LogLimit	Defines the log limit for a particular set of logs
LogManager	Manages the logging system, loading (and reloading) the configuration file, coordinating the log limits, and storing the set of log records pending.
LogRecord	Keep track of a log entry, unformatted.
LogRecordFormatter	Render a log record according to the log manager's settings
LogWriter	Log writer thread that pulls log records from the LogManager and writes them to the log.
LookaheadInputStream	Simple lookahead buffer to keep the last K bytes in reserve, configured to easily be reused.
NativeBigInteger	BigInteger that takes advantage of the jbigi library for the modPow operation, which accounts for a massive segment of the processing cost of asymmetric crypto.
ObjectCounter<K>	Count things.
OrderedProperties	Properties map that has its keySet ordered consistently (via the key's lexicographical ordering).
PartialEepGet	Fetch exactly the first 'size' bytes into a stream Anything less or more will throw an IOException No retries, no min and max size options, no timeout option If the server does not return a Content-Length header of the correct size, the fetch will fail.
PasswordManager	Manage both plaintext and salted/hashed password storage in router.config.
PortMapper	Map services to internal or external application ports for this context.
RandomSource	Singleton for whatever PRNG i2p uses.
ResettableGZIPInputStream	GZIP implementation per RFC 1952, reusing java's standard CRC32 and Inflater and InflaterInputStream implementations.
ResettableGZIPOutputStream	GZIP implementation per RFC 1952, reusing java's standard CRC32 and Deflater implementations.
ReusableGZIPInputStream	Provide a cache of reusable GZIP unzipper streams.
ReusableGZIPOutputStream	Provide a cache of reusable GZIP streams, each handling up to 40 KB output without expansion.
RFC822Date	Moved from NewsFetcher
SecureDirectory	Same as File but sets the file mode after mkdir() so it can be read and written by the owner only (i.e.
SecureFile	Same as SecureDirectory but sets the file mode after createNewFile() and createTempFile() also.
SecureFileOutputStream	Same as FileOutputStream but sets the file mode so it can only be read and written by the owner only (i.e.
ShellCommand	Passes a command to the OS shell for execution and manages the input and output.
SimpleByteCache	Like ByteCache but works directly with byte arrays, not ByteArrays.
SimpleScheduler	Deprecated. in 0.9.20, use SimpleTimer2 instead
SimpleStore	Deprecated - used only by SimpleTimer
SimpleTimer	Simple event scheduler - toss an event on the queue and it gets fired at the appropriate time.
SimpleTimer2	Simple event scheduler - toss an event on the queue and it gets fired at the appropriate time.
SimpleTimer2.TimedEvent	Similar to SimpleTimer.TimedEvent but users must extend instead of implement, and all schedule and cancel methods are through this class rather than SimpleTimer2.
SipHash	Wrapper around SipHashInline with constant per-JVM keys
SocketTimeout	Implements one or two timers; one for inactivity, that is reset by resetTimer(), and optionally, a total time since instantiation, that is configured by setTotalTimeoutPeriod().
SSLEepGet	HTTPS only, no retries, no min and max size options, no timeout option As of 0.9.45, supports redirect to https (redirect to http will still fail).
SSLEepGet.SSLState	An opaque class for the caller to pass to repeated instantiations of SSLEepGet.
SystemVersion	Methods to find out what system we are running on
TimeoutPipedInputStream	Adds setReadTimeout().
TimeoutPipedOutputStream	Helper for TimeoutPipedInputStream.
Translate	Translate strings efficiently.
TranslateReader	Translate.
TryCache<T>	An object cache which is safe to use by multiple threads without blocking.
UIMessages	A queue of messages, where each has an ID number.
UIMessages.Message
VersionComparator	Compares versions.
ZipFileComment	Deprecated. scheduled for removal late 2017, not for external use

Enum Summary

Enum	Description
DNSOverHTTPS.Type
EepGet.AUTH_MODE
SSLEepGet.ProxyType	Not all may be supported.