Apache Tuweni is a set of libraries and other tools to aid development of blockchain and other decentralized software in Java and other JVM languages. It includes a low-level bytes library, serialization and deserialization codecs (e.g. RLP), various cryptography functions and primitives, and lots of other helpful utilities.
Learn more at [https://tuweni.apache.org].
This application creates a sample standalone application applying the Plumtree gossip library.
$>bin/gossip --help Usage: <main class> [-h] [--sending] [--numberOfMessages=<numberOfMessages>] [--payloadSize=<payloadSize>] [--sendInterval=<sendInterval>] [-c=<configPath>] [-l=<port>] [-m=<messageLog>] [-n=<networkInterface>] [-r=<rpcPort>] [-p[=<peers>...]]... --numberOfMessages=<numberOfMessages> Number of messages to publish (load testing) --payloadSize=<payloadSize> Size of the random payload to send to other peers (load testing) --sending Whether this peer sends random messages to all other peers (load testing) --sendInterval=<sendInterval> Interval to wait in between sending messages in milliseconds (load testing) -c, --config=<configPath> Configuration file. -h, --help Prints usage prompt -l, --listen=<port> Port to listen on -m, --messageLog=<messageLog> Log file where messages are stored -n, --networkInterface=<networkInterface> Network interface to bind to -p, --peer[=<peers>...] Static peers list -r, --rpc=<rpcPort> RPC port to listen on
Example usage:
$>bin/gossip --sending --payloadSize 512 --sendInterval 200 -l 2000 -r 4000 -n 0.0.0.0 -p tcp://127.0.0.1:3000 -p tcp://127.0.0.1:3001
You can configure this application to send random messages to other peers. The application can also open up a RPC port accepting messages to propagate:
$>curl -X POST http://localhost:4000/publish -d "hello"
The application optionally takes a config file (with the -c flag).
Default configuration:
listenPort = 0 rpcPort = 0 networkInterface = "0.0.0.0" peers = [] messagelog = "messages.log" sending = false sendInterval = 1000 numberOfMessages=100 payloadSize = 200
Sample sender configuration:
listenPort = 2000 rpcPort = 4000 networkInterface = "0.0.0.0" peers = [ "tcp://127.0.0.1:3000", "tcp://127.0.0.1:3001"] messagelog = "messages.log" sending = true sendInterval = 1000 numberOfMessages=100 payloadSize = 200
Peers are encoded as URIs using the TCP scheme: tcp://127.0.0.1:3000
Licensed to the Apache Software Foundation (ASF) under one or more contributor license agreements. See the NOTICE file distributed with this work for additional information regarding copyright ownership. The ASF licenses this file to You under the Apache License, Version 2.0 (the “License”); you may not use this file except in compliance with the License. You may obtain a copy of the License at
http://www.apache.org/licenses/LICENSE-2.0
Unless required by applicable law or agreed to in writing, software distributed under the License is distributed on an “AS IS” BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the License for the specific language governing permissions and limitations under the License.
This application relays two hobbits endpoints.
Usage:
$> bin/hobbits-relayer --help Usage: <main class> [-h] [-b=<bind>] [-t=<to>] -b, --bind=<bind> Endpoint to bind to -h, --help Prints usage prompt -t, --to=<to> Endpoint to relay to
The application prints out messages to STDOUT.
Sample use:
Listen to a port
$> netcat -l -p 18000
Set up the relayer:
$> bin/hobbits-relayer -b tcp://localhost:10000 -t tcp://localhost:18000
Send a message:
$> cat message EWP 0.2 RPC 5 5 hellohello $> cat message | netcat localhost 10000
The relayer will show the message:
EWP 0.2 RPC 5 5 0x68656C6C6F 0x68656C6C6F
The listener will show the message, received:
$> netcat -l -p 18000 EWP 0.2 RPC 5 5 hellohello
Licensed to the Apache Software Foundation (ASF) under one or more contributor license agreements. See the NOTICE file distributed with this work for additional information regarding copyright ownership. The ASF licenses this file to You under the Apache License, Version 2.0 (the “License”); you may not use this file except in compliance with the License. You may obtain a copy of the License at
http://www.apache.org/licenses/LICENSE-2.0
Unless required by applicable law or agreed to in writing, software distributed under the License is distributed on an “AS IS” BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the License for the specific language governing permissions and limitations under the License.