openethereum/parity/whisper.rs
Robert Habermeier 99075ad22a Initial Whisper implementation (#6009)
* whisper skeleton

* basic message store

* rallying and message logic

* pass host info to network protocol handlers

* choose who starts rally based on node key

* module reshuffling

* mining messages

* prune messages by low PoW until below size target

* associated error type for ethkey generators and `OsRng` generator

* beginnings of RPC

* generic message handler for whisper

* reshuffle code order

* standard payload encoding and decoding

* basic crypto

* minor restructuring of net code

* implement shh_post

* merge?

* implement filters

* rand trait for hash types

* filter RPCs for whisper

* symmetric encryption of payload

* pub-sub

* filter tests

* use only secure random IDs

* attach arbitrary protocols to network

* basic integration of whisper into Parity

* eagerly prune low PoW entries

* broadcast messages with salted topics

* node info RPC

* fix import

* fix leading zeros calculation

* address minor grumbles
2017-07-14 20:40:28 +02:00

78 lines
2.3 KiB
Rust

// Copyright 2015-2017 Parity Technologies (UK) Ltd.
// This file is part of Parity.
// Parity is free software: you can redistribute it and/or modify
// it under the terms of the GNU General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
// Parity is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU General Public License for more details.
// You should have received a copy of the GNU General Public License
// along with Parity. If not, see <http://www.gnu.org/licenses/>.
use std::sync::Arc;
use std::io;
use ethsync::AttachedProtocol;
use parity_rpc::Metadata;
use parity_whisper::net::{self as whisper_net, PoolHandle, Network as WhisperNetwork};
use parity_whisper::rpc::{WhisperClient, FilterManager};
/// Whisper config.
#[derive(Debug, PartialEq, Eq)]
pub struct Config {
pub enabled: bool,
pub target_message_pool_size: usize,
}
impl Default for Config {
fn default() -> Self {
Config {
enabled: false,
target_message_pool_size: 10 * 1024 * 1024,
}
}
}
/// Factory for standard whisper RPC.
pub struct RpcFactory {
net: Arc<WhisperNetwork<Arc<FilterManager>>>,
manager: Arc<FilterManager>,
}
impl RpcFactory {
pub fn make_handler(&self) -> WhisperClient<PoolHandle, Metadata> {
WhisperClient::new(self.net.handle(), self.manager.clone())
}
}
/// Sets up whisper protocol and RPC handler.
///
/// Will target the given pool size.
#[cfg(not(feature = "ipc"))]
pub fn setup(target_pool_size: usize) -> io::Result<(AttachedProtocol, Option<RpcFactory>)> {
let manager = Arc::new(FilterManager::new()?);
let net = Arc::new(WhisperNetwork::new(target_pool_size, manager.clone()));
let proto = AttachedProtocol {
handler: net.clone() as Arc<_>,
packet_count: whisper_net::PACKET_COUNT,
versions: whisper_net::SUPPORTED_VERSIONS,
protocol_id: *b"shh",
};
let factory = RpcFactory { net: net, manager: manager };
Ok((proto, Some(factory)))
}
// TODO: make it possible to attach generic protocols in IPC.
#[cfg(feature = "ipc")]
pub fn setup(_pool: usize) -> (AttachedProtocol, Option<RpcFactory>) {
Ok((AttachedProtocol, None))
}