Package net.i2p.util

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

See:
Description

Interface Summary

Clock.ClockUpdateListener
EepGet.StatusListener
EventDispatcher	Event dispatching interface.
I2PProperties.I2PPropertyCallback
I2PThread.OOMEventListener
SimpleTimer.TimedEvent	Simple interface for events to be queued up and notified on expiration

Class Summary

Addresses	Methods to get the local addresses, and other IP utilities
BigPipedInputStream	Java 1.5 PipedInputStream buffers are only 1024 bytes; our I2CP messages are typically 1730 bytes, thus causing thread blockage before the whole message is transferred.
ByteCache	Cache the objects frequently used to reduce memory churn.
CachingByteArrayOutputStream	Deprecated. unused
Clock	Alternate location for determining the time which takes into account an offset.
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
Copy	Deprecated. only for use by installer, to be removed from i2p.jar, use FileUtil.copy()
Delete	Deprecated. only for use by installer, to be removed from i2p.jar, use FileUtil.rmdir()
EepGet	EepGet [-p 127.0.0.1:4444] [-n #retries] [-o outputFile] [-m markSize lineLen] url Bug: a malformed url http://example.i2p (no trailing '/') fails cryptically
EepHead	This is a quick hack to get a working EepHead, primarily for the following usage:
EventDispatcherImpl	An implementation of the EventDispatcher interface.
Exec	Deprecated. only for use by installer, to be removed from i2p.jar, use ShellCommand
Executor	Deprecated - used only by SimpleTimer
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).
I2PThread	In case its useful later...
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, writes them to the current logfile, and rotates the logs as necessary.
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 Useful for checking .sud versions
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.
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	Simple event scheduler - toss an event on the queue and it gets fired at the appropriate time.
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.
SocketTimeout	This should be deprecated.
SSLEepGet	HTTPS only, non-proxied only, no retries, no min and max size options, no timeout option Fails on 301 or 302 (doesn't follow redirect) Fails on bad certs (must have a valid cert chain) Self-signed certs or CAs not in the JVM key store must be loaded to be trusted.
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
Translate	Translate strings efficiently.
VersionComparator	Compares versions.
ZipFileComment	Not available in ZipFile until Java 7.

Package net.i2p.util Description

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