79 lines
2.3 KiB
Rust
79 lines
2.3 KiB
Rust
// Copyright 2015, 2016 Ethcore (UK) Ltd.
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// This file is part of Parity.
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// Parity is free software: you can redistribute it and/or modify
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// it under the terms of the GNU General Public License as published by
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// the Free Software Foundation, either version 3 of the License, or
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// (at your option) any later version.
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// Parity is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU General Public License for more details.
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// You should have received a copy of the GNU General Public License
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// along with Parity. If not, see <http://www.gnu.org/licenses/>.
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//! IPC RPC interface
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use std::io::{Read, Write};
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use std::marker::Sync;
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use std::sync::atomic::*;
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use semver::Version;
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pub struct Handshake {
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protocol_version: Version,
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api_version: Version,
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reserved: [u8; 64],
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}
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pub trait IpcConfig {
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fn api_version() -> Version {
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Version::parse("1.0.0").unwrap()
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}
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fn protocol_version() -> Version {
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Version::parse("1.0.0").unwrap()
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}
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}
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pub trait IpcInterface<T> where T: IpcConfig {
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/// reads the message from io, dispatches the call and returns serialized result
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fn dispatch<R>(&self, r: &mut R) -> Vec<u8> where R: Read;
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/// deserialize the payload from buffer, dispatches invoke and returns serialized result
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/// (for non-blocking io)
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fn dispatch_buf(&self, method_num: u16, buf: &[u8]) -> Vec<u8>;
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}
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/// serializes method invocation (method_num and parameters) to the stream specified by `w`
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pub fn invoke<W>(method_num: u16, params: &Option<Vec<u8>>, w: &mut W) where W: Write {
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// creating buffer to contain all message
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let buf_len = match *params { None => 2, Some(ref val) => val.len() + 2 };
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let mut buf = vec![0u8; buf_len];
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// writing method_num as u16
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buf[1] = (method_num & 255) as u8;
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buf[0] = (method_num >> 8) as u8;
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// serializing parameters only if provided with any
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if params.is_some() {
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buf[2..buf_len].clone_from_slice(params.as_ref().unwrap());
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}
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if w.write(&buf).unwrap() != buf_len
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{
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// if write was inconsistent
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panic!("failed to write to socket");
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}
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}
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/// IpcSocket
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pub trait IpcSocket: Read + Write + Sync {
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fn ready(&self) -> AtomicBool;
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}
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impl IpcSocket for ::devtools::TestSocket {
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fn ready(&self) -> AtomicBool {
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AtomicBool::new(true)
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}
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}
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