mirrors/bitcoinj
1
0
Fork 0
mirror of https://github.com/bitcoinj/bitcoinj.git synced 2025-03-04 01:54:18 +01:00
Code Issues Projects Releases Packages Wiki Activity
A library for working with Bitcoin
206 commits 15 branches 59 tags 53 MiB
Java 99.7%
Kotlin 0.2%
Find a file
Mike Hearn f336a89984 Patch 10 from Steves lazy parsing patchset. 
Customize Sha256Hash.hashCode() method to only use first n bytes of the backing array.  This provides uniqueness to 256^n combinations.  As hashcode is not required to be guaranteed unique this fulfills the contract and reduces hashing time.

Use case is for applications that do a lot of mapping by Sha256Hash.  Each put and get require several hashcode operations.  Cached hashcode is already implemented in 8.patch.

Similar changes to this yielded huge performance benefits in poolserverj.

There is no point implementing a FastEquals version of equals given the bytes are essentially random and no byte is any more likely unique than another.
2011-10-14 12:39:11 +00:00
src/com/google/bitcoin Patch 10 from Steves lazy parsing patchset. 2011-10-14 12:39:11 +00:00
target/site/apidocs Move javadocs to the maven directory, check in fresh set 2011-06-27 14:29:17 +00:00
tests/com/google/bitcoin Patch 10 from Steves lazy parsing patchset. 2011-10-14 12:39:11 +00:00
AUTHORS Add Steve to the AUTHORS file. 2011-09-16 07:50:22 +00:00
COPYING Initial checkin of BitCoinJ 2011-03-07 10:17:10 +00:00
pom.xml Patch from Gary and Jonny to switch the Maven config to a new Nexus-based build server. Changes how SLF44J is imported to avoid forcing a particular implementation on the user. Remove redundant or unnecessary parts of the POM. 2011-09-25 20:32:22 +00:00
README Update README. 2011-09-10 09:53:41 +00:00
TODO Patch 9 from Steves lazy parsing patchset. 2011-10-14 12:37:27 +00:00

README 

To get started, ensure you have the latest JDK installed, and download Maven from:

  http://maven.apache.org/

Then run "mvn clean package" to compile the software. You can also run "mvn site:site" to generate a website with
useful information like JavaDocs. The outputs are under the target/ directory.

Now ensure you're running a BitCoin node locally and run the example app:

  mvn exec:java -Dexec.mainClass=com.google.bitcoin.examples.PingService

It will download the block chain and eventually print a BitCoin address. If you send coins to it,
you should get them back a few minutes later when a block is solved.

Note that if you connect to a node that is itself downloading the block chain, you will see very slow progress (1
block per second or less). Find a node that isn't heavily loaded to connect to.

If you get a SocketDisconnectedException, the node you've connected to has its max send buffer set to low
(unfortunately the default is too low). Connect to a node that has a bigger send buffer,
settable by passing -maxsendbuffer=25600 to the Bitcoin C++ software.

For the convenience of Eclipse users, you can copy dependency jars to target/dependency using:

    mvn dependency:copy-dependencies