New driver-streams-node, replacing driver-tcp-node and driver-unixsocket-node
This commit is contained in:
parent
f837aac390
commit
7eaa07de57
|
@ -14,8 +14,7 @@
|
|||
"@syndicate-lang/core": "^0.0.18",
|
||||
"@syndicate-lang/driver-browser-ui": "^0.0.16",
|
||||
"@syndicate-lang/driver-http-node": "^0.0.15",
|
||||
"@syndicate-lang/driver-tcp-node": "^0.0.5",
|
||||
"@syndicate-lang/driver-unixsocket-node": "^0.0.0",
|
||||
"@syndicate-lang/driver-streams-node": "^0.0.0",
|
||||
"@syndicate-lang/driver-timer": "^0.0.19",
|
||||
"@syndicate-lang/driver-websocket": "^0.0.10",
|
||||
"webpack": "^4.23.1",
|
||||
|
|
|
@ -5,8 +5,8 @@ const UI = require("@syndicate-lang/driver-browser-ui");
|
|||
// @jsxFrag UI.htmlFragment
|
||||
|
||||
const Http = activate require("@syndicate-lang/driver-http-node");
|
||||
const Tcp = activate require("@syndicate-lang/driver-tcp-node");
|
||||
const UnixSocket = activate require("@syndicate-lang/driver-unixsocket-node");
|
||||
const S = activate require("@syndicate-lang/driver-streams-node");
|
||||
|
||||
import {
|
||||
Set, Bytes,
|
||||
Encoder, Observe,
|
||||
|
@ -82,38 +82,31 @@ spawn named 'websocketListener' {
|
|||
}
|
||||
|
||||
spawn named 'tcpListener' {
|
||||
during Tcp.TcpConnection($id, Tcp.TcpListener(8001)) spawn named ['tcpConnection', id] {
|
||||
const name = ConnectionName('broker', id);
|
||||
assert Tcp.TcpAccepted(id);
|
||||
assert Connection(name);
|
||||
const decoder = makeDecoder(null);
|
||||
on message Tcp.DataIn(id, $data) {
|
||||
decoder.write(data);
|
||||
let v;
|
||||
while ((v = decoder.try_next())) {
|
||||
send Request(name, v);
|
||||
}
|
||||
}
|
||||
on message Response(name, $resp) send Tcp.DataOut(id, new Encoder().push(resp).contents());
|
||||
stop on message Disconnect(name);
|
||||
on asserted S.IncomingConnection($id, S.TcpListener(8001)) {
|
||||
spawnStreamConnection('tcpBroker', id);
|
||||
}
|
||||
}
|
||||
|
||||
spawn named 'unixListener' {
|
||||
during UnixSocket.UnixSocketConnection($id, UnixSocket.UnixSocketServer("./sock"))
|
||||
spawn named ['unixConnection', id] {
|
||||
on asserted S.IncomingConnection($id, S.UnixSocketServer("./sock")) {
|
||||
spawnStreamConnection('unixBroker', id);
|
||||
}
|
||||
}
|
||||
|
||||
function spawnStreamConnection(debugLabel, id) {
|
||||
spawn named [debugLabel, id] {
|
||||
stop on retracted S.Duplex(id);
|
||||
const name = ConnectionName('broker', id);
|
||||
assert UnixSocket.UnixSocketAccepted(id);
|
||||
assert Connection(name);
|
||||
const decoder = makeDecoder(null);
|
||||
on message UnixSocket.DataIn(id, $data) {
|
||||
on message S.Data(id, $data) {
|
||||
decoder.write(data);
|
||||
let v;
|
||||
while ((v = decoder.try_next())) {
|
||||
send Request(name, v);
|
||||
}
|
||||
}
|
||||
on message Response(name, $resp) send UnixSocket.DataOut(id, new Encoder().push(resp).contents());
|
||||
on message Response(name, $resp) send S.Push(id, new Encoder().push(resp).contents(), null);
|
||||
stop on message Disconnect(name);
|
||||
}
|
||||
}
|
||||
|
|
|
@ -0,0 +1,99 @@
|
|||
# Streams in node.js 10.x → Syndicate
|
||||
|
||||
Streams can be in binary or object mode
|
||||
|
||||
Desiderata: Like enumerator/observable, it seems like
|
||||
readable/writable should be duals. If they're not, why not, other than
|
||||
historical reasons?
|
||||
|
||||
## GENERAL
|
||||
|
||||
`stream.finished()`
|
||||
|
||||
## WRITABLE
|
||||
|
||||
Has a buffer of to-be-accepted elements.
|
||||
|
||||
Emits:
|
||||
|
||||
- `close` (optional), after all resources have been released. No more
|
||||
events, no more computation, nothing more will happen.
|
||||
|
||||
- `drain`, when the buffer runs *empty*, to signal a demand for more
|
||||
input.
|
||||
|
||||
- `error`
|
||||
|
||||
- `finish`, exactly equivalent to a callback-function acknowledging
|
||||
the `end()` call: the "no more input is available" signal has been
|
||||
completely processed and has made its way through to the
|
||||
underlying/backing medium.
|
||||
|
||||
- `pipe`/`unpipe`, notifies the `Writable` of an attached/detached
|
||||
pipe sender.
|
||||
|
||||
Methods:
|
||||
|
||||
- `cork`/`uncork`, for batching supplied inputs
|
||||
|
||||
- `destroy`, abandon the `Writable` without bothering to try to
|
||||
finish; dual to `error`, more or less
|
||||
|
||||
- `end`, does an optional `write` and then signals the clean end of
|
||||
the input stream. If a callback is supplied, it is attached as a
|
||||
listener to `finish`.
|
||||
|
||||
- `write`, delivers a chunk of input. Yields `false` when the buffer
|
||||
is *full* at the time the call to `write` returns; will issue
|
||||
`drain` later in this case.
|
||||
|
||||
Properties:
|
||||
|
||||
- high water mark, length of buffer in use.
|
||||
|
||||
## READABLE
|
||||
|
||||
Has a buffer of to-be-relayed elements.
|
||||
|
||||
Emits:
|
||||
|
||||
- `close` (optional), exactly the same as for `Writable`.
|
||||
|
||||
- `readable`, when the buffer becomes *nonempty* from having been
|
||||
empty, to signal the possibility of more output.
|
||||
|
||||
- `error`
|
||||
|
||||
- `end`, when no more data will be produced; analogous to TCP's
|
||||
`FIN`. Is in-order wrt other data.
|
||||
|
||||
- `data`, delivers a chunk of output.
|
||||
|
||||
Methods:
|
||||
|
||||
- `pipe`/`unpipe`, for attaching a `Writable` to this `Readable`.
|
||||
Many of them can be attached! I guess that makes a fan-out? By
|
||||
default, the `end` method of the `Writable` is called when the
|
||||
`Readable` emits its `end` event, but this can be overridden with
|
||||
an option.
|
||||
|
||||
- `isPaused`, `pause` and `resume` control and interrogate
|
||||
XON/XOFF-style flow control.
|
||||
|
||||
- `destroy`, abandon the `Readable` without bothering to try to
|
||||
finish reading from it; not quite dual to error since a `Readable`
|
||||
is a source, not a sink
|
||||
|
||||
- `read`, explicitly get a chunk
|
||||
|
||||
- `push`, internal API for poking a chunk into the "last-in" end of
|
||||
the FIFO to-be-delivered buffer. Returns `false` when the buffer is
|
||||
(over-)full.
|
||||
|
||||
- `unshift`, internalish API for poking a chunk into the "first-in"
|
||||
end of the FIFO buffer, like `ungetc()` etc. There are
|
||||
complications in using this, check the docs.
|
||||
|
||||
Properties:
|
||||
|
||||
- high water mark, length of buffer in use.
|
|
@ -1,7 +1,7 @@
|
|||
{
|
||||
"name": "@syndicate-lang/driver-unixsocket-node",
|
||||
"name": "@syndicate-lang/driver-streams-node",
|
||||
"version": "0.0.0",
|
||||
"description": "Unix socket support for Syndicate/js on node.js",
|
||||
"description": "Node.js Readable/Writable/Duplex/Transform stream support for Syndicate/js",
|
||||
"main": "lib/index.js",
|
||||
"repository": "github:syndicate-lang/syndicate-js",
|
||||
"author": "Tony Garnock-Jones <tonyg@leastfixedpoint.com>",
|
||||
|
@ -12,14 +12,13 @@
|
|||
"scripts": {
|
||||
"prepare": "which redo >/dev/null && redo || ../../do"
|
||||
},
|
||||
"homepage": "https://github.com/syndicate-lang/syndicate-js/tree/master/packages/driver-unixsocket-node",
|
||||
"homepage": "https://github.com/syndicate-lang/syndicate-js/tree/master/packages/driver-streams-node",
|
||||
"devDependencies": {
|
||||
"@babel/core": "^7.1.2",
|
||||
"@babel/preset-env": "^7.1.0",
|
||||
"@syndicate-lang/syntax": "^0.0.20"
|
||||
},
|
||||
"dependencies": {
|
||||
"@syndicate-lang/core": "^0.0.18",
|
||||
"@syndicate-lang/driver-timer": "^0.0.19"
|
||||
"@syndicate-lang/core": "^0.0.18"
|
||||
}
|
||||
}
|
|
@ -0,0 +1,21 @@
|
|||
"use strict";
|
||||
//---------------------------------------------------------------------------
|
||||
// @syndicate-lang/driver-streams-node, Stream support for Syndicate/js
|
||||
// Copyright (C) 2016-2018 Tony Garnock-Jones <tonyg@leastfixedpoint.com>
|
||||
//
|
||||
// This program 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.
|
||||
//
|
||||
// This program 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 this program. If not, see <https://www.gnu.org/licenses/>.
|
||||
//---------------------------------------------------------------------------
|
||||
|
||||
Object.assign(module.exports, activate require('./streams.js'));
|
||||
Object.assign(module.exports, activate require('./net.js'));
|
|
@ -0,0 +1,142 @@
|
|||
//---------------------------------------------------------------------------
|
||||
// @syndicate-lang/driver-streams-node, Stream support for Syndicate/js
|
||||
// Copyright (C) 2016-2018 Tony Garnock-Jones <tonyg@leastfixedpoint.com>
|
||||
//
|
||||
// This program 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.
|
||||
//
|
||||
// This program 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 this program. If not, see <https://www.gnu.org/licenses/>.
|
||||
//---------------------------------------------------------------------------
|
||||
|
||||
import { currentFacet, Observe, Dataspace, genUuid, Bytes } from "@syndicate-lang/core";
|
||||
const S = activate require("./streams");
|
||||
const net = require('net');
|
||||
const fs = require('fs');
|
||||
|
||||
assertion type TcpAddress(host, port);
|
||||
assertion type TcpListener(port);
|
||||
export { TcpAddress, TcpListener };
|
||||
|
||||
assertion type UnixSocketClient(path);
|
||||
assertion type UnixSocketServer(path);
|
||||
export { UnixSocketClient, UnixSocketServer };
|
||||
|
||||
spawn named 'NetDriver' {
|
||||
during Observe(S.IncomingConnection(_, TcpListener($port))) spawn named ['TcpListener', port] {
|
||||
_netListener.call(this,
|
||||
() => genUuid('tcp' + port),
|
||||
TcpListener(port),
|
||||
(server) => { server.listen(port, '0.0.0.0') },
|
||||
(server, err) => { throw err; });
|
||||
}
|
||||
|
||||
during Observe(S.IncomingConnection(_, UnixSocketServer($path)))
|
||||
spawn named ['UnixSocketServer', path] {
|
||||
let retried = false;
|
||||
_netListener.call(this,
|
||||
() => genUuid('unix:' + path),
|
||||
UnixSocketServer(path),
|
||||
(server) => { server.listen(path) },
|
||||
(server, err) => {
|
||||
if (err.code === 'EADDRINUSE') {
|
||||
// Potentially-stale socket file sitting around. Try
|
||||
// connecting to it to see if it is alive, and remove it if
|
||||
// not.
|
||||
if (retried) {
|
||||
// We're on our second go already, give up.
|
||||
throw err;
|
||||
} else {
|
||||
retried = true;
|
||||
const probe = new net.Socket();
|
||||
probe.on('error', Dataspace.wrapExternal((e) => {
|
||||
if (e.code === 'ECONNREFUSED') {
|
||||
fs.unlinkSync(path);
|
||||
server.listen(path);
|
||||
} else {
|
||||
// Something else went wrong! Give up the original listen.
|
||||
console.error('Problem while probing potentially-stale socket', e);
|
||||
throw err;
|
||||
}
|
||||
}));
|
||||
probe.connect(path, Dataspace.wrapExternal((sock) => {
|
||||
try { sock.destroy() } catch (e) { console.error(e); }
|
||||
throw err;
|
||||
}));
|
||||
}
|
||||
} else {
|
||||
throw err;
|
||||
}
|
||||
});
|
||||
}
|
||||
|
||||
function _netListener(idGenerator, spec, listenFun, errorHandler) {
|
||||
let finish = Dataspace.backgroundTask();
|
||||
on stop finish();
|
||||
|
||||
let server = net.createServer(Dataspace.wrapExternal((socket) => {
|
||||
S.spawnConnection(idGenerator(), spec, socket);
|
||||
}));
|
||||
|
||||
server.on('error', Dataspace.wrapExternal((err) => errorHandler(server, err)));
|
||||
listenFun(server);
|
||||
on stop try { server.close() } catch (e) { console.error(e); }
|
||||
}
|
||||
|
||||
during S.OutgoingConnection($id, TcpAddress($host, $port)) spawn named ['Tcp', id, host, port] {
|
||||
_netConnector.call(this,
|
||||
id,
|
||||
(socket) => { socket.connect(port, host) },
|
||||
TcpAddress(host, port));
|
||||
}
|
||||
|
||||
during S.OutgoingConnection($id, UnixSocketClient($path)) spawn named ['Unix', id, path] {
|
||||
_netConnector.call(this,
|
||||
id,
|
||||
(socket) => { socket.connect(path) },
|
||||
UnixSocketClient(path));
|
||||
}
|
||||
|
||||
function _netConnector(id, connectFun, spec) {
|
||||
const establishingFacet = currentFacet();
|
||||
let finish = Dataspace.backgroundTask();
|
||||
|
||||
const socket = new net.Socket();
|
||||
|
||||
const connectionErrorHandler = Dataspace.wrapExternal((err) => {
|
||||
finish();
|
||||
establishingFacet.stop(() => {
|
||||
socket.destroy();
|
||||
send S.ConnectionRejected(id, err);
|
||||
});
|
||||
});
|
||||
|
||||
on retracted S.OutgoingConnection(id, spec) {
|
||||
connectionErrorHandler(null);
|
||||
}
|
||||
|
||||
on start {
|
||||
const readyHandler = Dataspace.wrapExternal(() => {
|
||||
socket.off('error', connectionErrorHandler);
|
||||
socket.off('ready', readyHandler);
|
||||
send S.ConnectionAccepted(id);
|
||||
establishingFacet.stop(() => {
|
||||
react {
|
||||
on stop finish();
|
||||
S.duplexStreamBehaviour(id, socket);
|
||||
}
|
||||
});
|
||||
});
|
||||
socket.on('error', connectionErrorHandler);
|
||||
socket.on('ready', readyHandler);
|
||||
connectFun(socket);
|
||||
}
|
||||
}
|
||||
}
|
|
@ -0,0 +1,255 @@
|
|||
//---------------------------------------------------------------------------
|
||||
// @syndicate-lang/driver-streams-node, Stream support for Syndicate/js
|
||||
// Copyright (C) 2016-2018 Tony Garnock-Jones <tonyg@leastfixedpoint.com>
|
||||
//
|
||||
// This program 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.
|
||||
//
|
||||
// This program 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 this program. If not, see <https://www.gnu.org/licenses/>.
|
||||
//---------------------------------------------------------------------------
|
||||
|
||||
import {
|
||||
currentFacet, Observe, Dataspace, genUuid, Bytes,
|
||||
Map,
|
||||
} from "@syndicate-lang/core";
|
||||
const stream = require('stream');
|
||||
|
||||
assertion type IncomingConnection(id, spec);
|
||||
assertion type OutgoingConnection(id, spec);
|
||||
message type ConnectionAccepted(id); // for both incoming and outgoing connections
|
||||
message type ConnectionRejected(id, err); // for both incoming and outgoing connections
|
||||
|
||||
// Each `chunk` to/from a stream in BINARY mode must be either a
|
||||
// String or a Uint8Array (or Buffer). Any `chunk` may be empty
|
||||
// (zero-length). A `chunk` must NEVER be `null`.
|
||||
//
|
||||
// Each `chunk` to/from a stream in OBJECT mode may be any value
|
||||
// except `null`.
|
||||
//
|
||||
// Each `ack`, if non-`null`, is an acknowledgement MESSAGE to be sent
|
||||
// when the corresponding chunk is completely processed.
|
||||
|
||||
// Interest in StreamInfo is non-creative
|
||||
assertion type StreamInfo(id, kind, stream); // kind ∈ "Readable", "Writable", "Duplex"
|
||||
|
||||
// Framing knowledge; interest in these is creative
|
||||
assertion type Readable(id) = Symbol.for('stream-readable');
|
||||
assertion type Writable(id) = Symbol.for('stream-writable');
|
||||
assertion type Duplex(id) = Symbol.for('stream-duplex');
|
||||
|
||||
message type Error(id, detail) = Symbol.for('stream-error');
|
||||
|
||||
// From Readable:
|
||||
message type Data(id, chunk) = Symbol.for('stream-data');
|
||||
assertion type End(id) = Symbol.for('stream-end'); // if no interest in this, frame torn down at end
|
||||
assertion type DataReady(id) = Symbol.for('stream-data-ready');
|
||||
|
||||
// To Writable:
|
||||
message type Push(id, chunk, ack) = Symbol.for('stream-push');
|
||||
assertion type Close(id, ack) = Symbol.for('stream-close');
|
||||
|
||||
// From Writable:
|
||||
assertion type BackPressure(readableId, writableId) = Symbol.for('stream-back-pressure');
|
||||
message type Window(writableId, seqno, amount) = Symbol.for('stream-credit');
|
||||
|
||||
// To Readable:
|
||||
message type Pushback(id, chunk) = Symbol.for('stream-pushback');
|
||||
|
||||
// Readable output adapter: (TODO: move to separate module?)
|
||||
message type Line(id, line) = Symbol.for('stream-line');
|
||||
|
||||
export {
|
||||
IncomingConnection, OutgoingConnection, ConnectionAccepted, ConnectionRejected,
|
||||
StreamInfo, Readable, Writable, Duplex,
|
||||
Error,
|
||||
Data, End, DataReady,
|
||||
Push, Close,
|
||||
BackPressure, Window,
|
||||
Pushback,
|
||||
Line,
|
||||
};
|
||||
|
||||
const READING_STOPPED = 1;
|
||||
const WRITING_STOPPED = 2;
|
||||
|
||||
function _commonStreamBehaviour(id, s, stopBits) {
|
||||
on stop try { s.destroy(); } catch (_err) {}
|
||||
|
||||
field this.stopBits = stopBits;
|
||||
stop on (this.stopBits === (READING_STOPPED + WRITING_STOPPED));
|
||||
|
||||
s.on('error', Dataspace.wrapExternal((err) => {
|
||||
if (err.errno !== 'ECONNRESET') {
|
||||
// TODO: is this really something that should be here?
|
||||
// Parameterize error handling for different streams??
|
||||
console.error(err);
|
||||
}
|
||||
currentFacet().stop();
|
||||
}));
|
||||
|
||||
s.on('close', Dataspace.wrapExternal((err) => { currentFacet().stop(); }));
|
||||
}
|
||||
|
||||
function _readableStreamBehaviour(id, s) {
|
||||
const objectMode = s.objectMode || s.readableObjectMode || false;
|
||||
|
||||
field this.endMonitorExists = false;
|
||||
during Observe(End(id)) {
|
||||
on start this.endMonitorExists = true;
|
||||
on stop this.endMonitorExists = false;
|
||||
}
|
||||
|
||||
s.on('end', Dataspace.wrapExternal(() => {
|
||||
if (this.endMonitorExists) {
|
||||
react {
|
||||
assert End(id);
|
||||
stop on (!this.endMonitorExists) {
|
||||
this.stopBits |= READING_STOPPED;
|
||||
}
|
||||
}
|
||||
} else {
|
||||
this.stopBits |= READING_STOPPED;
|
||||
}
|
||||
}));
|
||||
|
||||
on message Pushback(id, $chunk) s.unshift(chunk);
|
||||
|
||||
field this.outboundWindows = Map();
|
||||
during BackPressure(id, $writable) {
|
||||
on asserted Window(writable, $seqno, $amount) {
|
||||
// Attend to `seqno` to allow otherwise-noop changes to
|
||||
// refresh the outboundWindow size.
|
||||
this.outboundWindows = this.outboundWindows.set(writable, amount);
|
||||
}
|
||||
on retracted Window(writable, _, _) {
|
||||
this.outboundWindows = this.outboundWindows.remove(writable);
|
||||
}
|
||||
}
|
||||
|
||||
field this.outboundWindow = null;
|
||||
dataflow {
|
||||
const min = this.outboundWindows.min();
|
||||
this.outboundWindow = (min === void 0) ? null : Math.max(0, min);
|
||||
}
|
||||
|
||||
field this.readable = false;
|
||||
s.on('readable', Dataspace.wrapExternal(() => { this.readable = true; }));
|
||||
|
||||
assert DataReady(id) when (this.readable);
|
||||
|
||||
during Observe(Data(id, _)) {
|
||||
dataflow {
|
||||
while (this.readable && (this.outboundWindow === null || this.outboundWindow > 0)) {
|
||||
const maxlen = (this.outboundWindow === null)
|
||||
? void 0
|
||||
: Math.min(s.readableLength, this.outboundWindow);
|
||||
const chunk = s.read(maxlen);
|
||||
if (chunk === null) {
|
||||
this.readable = false;
|
||||
} else {
|
||||
const amount = objectMode ? 1 : chunk.length;
|
||||
// This is the adjustment that forces us to pay attention to seqno:
|
||||
this.outboundWindows = this.outboundWindows.mapEntries(([t, c]) => [t, c - amount]);
|
||||
if (this.outboundWindow !== null) this.outboundWindow -= amount;
|
||||
send Data(id, chunk);
|
||||
}
|
||||
}
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
function _writableStreamBehaviour(id, s) {
|
||||
const objectMode = s.objectMode || s.writableObjectMode || false;
|
||||
|
||||
const refreshWindow = () => {
|
||||
this.seqno++;
|
||||
return Math.max(0, s.writableHighWaterMark - s.writableLength);
|
||||
}
|
||||
field this.seqno = 0;
|
||||
field this.inboundWindow = refreshWindow();
|
||||
during Observe(Window(id, _, _)) assert Window(id, this.seqno, this.inboundWindow);
|
||||
|
||||
s.on('drain', Dataspace.wrapExternal(() => { this.inboundWindow = refreshWindow(); }));
|
||||
|
||||
const callbackFor = (k) => (k === null ? void 0 : Dataspace.wrapExternal(() => { send k; }));
|
||||
|
||||
on message Push(id, $chunk, $ack) {
|
||||
s.write(objectMode ? chunk : Bytes.toIO(chunk), callbackFor(ack));
|
||||
this.inboundWindow = refreshWindow();
|
||||
}
|
||||
|
||||
on message Close(id, $ack) {
|
||||
s.end(callbackFor(ack));
|
||||
this.inboundWindow = refreshWindow();
|
||||
}
|
||||
}
|
||||
|
||||
export function readableStreamBehaviour(id, s) {
|
||||
(function () {
|
||||
assert StreamInfo(id, "Readable", s);
|
||||
|
||||
assert Readable(id);
|
||||
stop on retracted Observe(Readable(id));
|
||||
|
||||
_commonStreamBehaviour.call(this, id, s, WRITING_STOPPED);
|
||||
_readableStreamBehaviour.call(this, id, s);
|
||||
}).call(currentFacet().fields);
|
||||
}
|
||||
|
||||
export function writableStreamBehaviour(id, s) {
|
||||
(function () {
|
||||
assert StreamInfo(id, "Writable", s);
|
||||
|
||||
assert Writable(id);
|
||||
stop on retracted Observe(Writable(id));
|
||||
|
||||
_commonStreamBehaviour.call(this, id, s, READING_STOPPED);
|
||||
_writableStreamBehaviour.call(this, id, s);
|
||||
}).call(currentFacet().fields);
|
||||
}
|
||||
|
||||
export function duplexStreamBehaviour(id, s) {
|
||||
(function () {
|
||||
assert StreamInfo(id, "Duplex", s);
|
||||
|
||||
assert Duplex(id);
|
||||
stop on retracted Observe(Duplex(id));
|
||||
|
||||
_commonStreamBehaviour.call(this, id, s, 0);
|
||||
_readableStreamBehaviour.call(this, id, s);
|
||||
_writableStreamBehaviour.call(this, id, s);
|
||||
}).call(currentFacet().fields);
|
||||
}
|
||||
|
||||
spawn named 'driver/stream-line' {
|
||||
during Observe(Line($id, _)) spawn named ['LineReader', id] {
|
||||
field this.buffer = Bytes();
|
||||
on message Data(id, $data) this.buffer = Bytes.concat([this.buffer, data]);
|
||||
dataflow {
|
||||
const pos = this.buffer.indexOf(10);
|
||||
if (pos !== -1) {
|
||||
const line = this.buffer.slice(0, pos);
|
||||
this.buffer = this.buffer.slice(pos + 1);
|
||||
send Line(id, line);
|
||||
}
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
export function spawnConnection(id, spec, s) {
|
||||
spawn named ['IncomingConnection', id] {
|
||||
assert IncomingConnection(id, spec);
|
||||
stop on retracted Observe(IncomingConnection(_, spec)) s.destroy();
|
||||
stop on message ConnectionRejected(id, $err) s.destroy(err);
|
||||
stop on asserted Observe(Duplex(id)) react duplexStreamBehaviour(id, s);
|
||||
stop on message ConnectionAccepted(id) react duplexStreamBehaviour(id, s);
|
||||
}
|
||||
}
|
|
@ -1,25 +0,0 @@
|
|||
{
|
||||
"name": "@syndicate-lang/driver-tcp-node",
|
||||
"version": "0.0.5",
|
||||
"description": "TCP support for Syndicate/js on node.js",
|
||||
"main": "lib/index.js",
|
||||
"repository": "github:syndicate-lang/syndicate-js",
|
||||
"author": "Tony Garnock-Jones <tonyg@leastfixedpoint.com>",
|
||||
"license": "GPL-3.0+",
|
||||
"publishConfig": {
|
||||
"access": "public"
|
||||
},
|
||||
"scripts": {
|
||||
"prepare": "which redo >/dev/null && redo || ../../do"
|
||||
},
|
||||
"homepage": "https://github.com/syndicate-lang/syndicate-js/tree/master/packages/driver-tcp-node",
|
||||
"devDependencies": {
|
||||
"@babel/core": "^7.1.2",
|
||||
"@babel/preset-env": "^7.1.0",
|
||||
"@syndicate-lang/syntax": "^0.0.20"
|
||||
},
|
||||
"dependencies": {
|
||||
"@syndicate-lang/core": "^0.0.18",
|
||||
"@syndicate-lang/driver-timer": "^0.0.19"
|
||||
}
|
||||
}
|
|
@ -1,118 +0,0 @@
|
|||
//---------------------------------------------------------------------------
|
||||
// @syndicate-lang/driver-tcp-node, TCP support for Syndicate/js
|
||||
// Copyright (C) 2016-2018 Tony Garnock-Jones <tonyg@leastfixedpoint.com>
|
||||
//
|
||||
// This program 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.
|
||||
//
|
||||
// This program 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 this program. If not, see <https://www.gnu.org/licenses/>.
|
||||
//---------------------------------------------------------------------------
|
||||
|
||||
import { currentFacet, Observe, Dataspace, genUuid, Bytes } from "@syndicate-lang/core";
|
||||
const net = require('net');
|
||||
|
||||
assertion type TcpConnection(id, spec);
|
||||
assertion type TcpAccepted(id);
|
||||
assertion type TcpRejected(id, reason);
|
||||
|
||||
message type LineIn(id, line);
|
||||
message type DataIn(id, chunk);
|
||||
message type DataOut(id, chunk);
|
||||
|
||||
assertion type TcpAddress(host, port);
|
||||
assertion type TcpListener(port);
|
||||
|
||||
export {
|
||||
TcpConnection, TcpAccepted, TcpRejected,
|
||||
DataOut, DataIn, LineIn,
|
||||
TcpAddress, TcpListener,
|
||||
};
|
||||
|
||||
spawn named 'driver/TcpDriver' {
|
||||
during Observe(TcpConnection(_, TcpListener($port))) spawn named ['driver/TcpListener', port] {
|
||||
let finish = Dataspace.backgroundTask();
|
||||
on stop finish();
|
||||
|
||||
let server = net.createServer(Dataspace.wrapExternal((socket) => {
|
||||
let id = genUuid('tcp' + port);
|
||||
spawn named ['driver/TcpInbound', id] {
|
||||
assert TcpConnection(id, TcpListener(port));
|
||||
on asserted TcpAccepted(id) _connectionCommon.call(this, currentFacet(), id, socket, true);
|
||||
stop on retracted TcpAccepted(id);
|
||||
stop on asserted TcpRejected(id, _);
|
||||
}
|
||||
}));
|
||||
|
||||
server.on('error', Dataspace.wrapExternal((err) => { throw err; }));
|
||||
server.listen(port, '0.0.0.0');
|
||||
on stop try { server.close() } catch (e) { console.error(e); }
|
||||
}
|
||||
|
||||
during TcpConnection($id, TcpAddress($host, $port))
|
||||
spawn named ['driver/TcpOutbound', id, host, port] {
|
||||
let finish = Dataspace.backgroundTask();
|
||||
on stop finish();
|
||||
|
||||
let socket = new net.Socket();
|
||||
|
||||
on start {
|
||||
socket.connect(port, host);
|
||||
_connectionCommon.call(this, currentFacet(), id, socket, false);
|
||||
}
|
||||
}
|
||||
|
||||
during Observe(LineIn($id, _)) spawn named ['driver/TcpLineReader', id] {
|
||||
field this.buffer = Bytes();
|
||||
on message DataIn(id, $data) this.buffer = Bytes.concat([this.buffer, data]);
|
||||
dataflow {
|
||||
const pos = this.buffer.indexOf(10);
|
||||
if (pos !== -1) {
|
||||
const line = this.buffer.slice(0, pos);
|
||||
this.buffer = this.buffer.slice(pos + 1);
|
||||
send LineIn(id, line);
|
||||
}
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
function _connectionCommon(rootFacet, id, socket, established) {
|
||||
react {
|
||||
field this.ready = established;
|
||||
|
||||
socket.on('ready', Dataspace.wrapExternal(() => {
|
||||
if (!established) react assert TcpAccepted(id);
|
||||
this.ready = true;
|
||||
}));
|
||||
socket.on('error', Dataspace.wrapExternal((err) => {
|
||||
if (!this.ready) {
|
||||
// Pre-connection error: "rejected"
|
||||
react assert TcpRejected(id, err);
|
||||
} else {
|
||||
// Post-establishment error
|
||||
if (err.errno !== 'ECONNRESET') {
|
||||
console.error(err);
|
||||
}
|
||||
rootFacet.stop();
|
||||
}
|
||||
}));
|
||||
socket.on('close', Dataspace.wrapExternal(() => { rootFacet.stop(); }));
|
||||
|
||||
on stop try { socket.destroy() } catch (e) { console.error(e); }
|
||||
|
||||
on start react stop on asserted Observe(DataIn(id, _)) {
|
||||
socket.on('data', Dataspace.wrapExternal((data) => { send DataIn(id, Bytes.fromIO(data)); }));
|
||||
}
|
||||
|
||||
on message DataOut(id, $data) {
|
||||
socket.write(Bytes.toIO(data));
|
||||
}
|
||||
}
|
||||
}
|
|
@ -1,4 +0,0 @@
|
|||
{
|
||||
"presets": [ "@babel/preset-env" ],
|
||||
"plugins": [ "@syndicate-lang/syntax/plugin" ]
|
||||
}
|
|
@ -1 +0,0 @@
|
|||
gpl-3.0.txt
|
|
@ -1,674 +0,0 @@
|
|||
GNU GENERAL PUBLIC LICENSE
|
||||
Version 3, 29 June 2007
|
||||
|
||||
Copyright (C) 2007 Free Software Foundation, Inc. <https://fsf.org/>
|
||||
Everyone is permitted to copy and distribute verbatim copies
|
||||
of this license document, but changing it is not allowed.
|
||||
|
||||
Preamble
|
||||
|
||||
The GNU General Public License is a free, copyleft license for
|
||||
software and other kinds of works.
|
||||
|
||||
The licenses for most software and other practical works are designed
|
||||
to take away your freedom to share and change the works. By contrast,
|
||||
the GNU General Public License is intended to guarantee your freedom to
|
||||
share and change all versions of a program--to make sure it remains free
|
||||
software for all its users. We, the Free Software Foundation, use the
|
||||
GNU General Public License for most of our software; it applies also to
|
||||
any other work released this way by its authors. You can apply it to
|
||||
your programs, too.
|
||||
|
||||
When we speak of free software, we are referring to freedom, not
|
||||
price. Our General Public Licenses are designed to make sure that you
|
||||
have the freedom to distribute copies of free software (and charge for
|
||||
them if you wish), that you receive source code or can get it if you
|
||||
want it, that you can change the software or use pieces of it in new
|
||||
free programs, and that you know you can do these things.
|
||||
|
||||
To protect your rights, we need to prevent others from denying you
|
||||
these rights or asking you to surrender the rights. Therefore, you have
|
||||
certain responsibilities if you distribute copies of the software, or if
|
||||
you modify it: responsibilities to respect the freedom of others.
|
||||
|
||||
For example, if you distribute copies of such a program, whether
|
||||
gratis or for a fee, you must pass on to the recipients the same
|
||||
freedoms that you received. You must make sure that they, too, receive
|
||||
or can get the source code. And you must show them these terms so they
|
||||
know their rights.
|
||||
|
||||
Developers that use the GNU GPL protect your rights with two steps:
|
||||
(1) assert copyright on the software, and (2) offer you this License
|
||||
giving you legal permission to copy, distribute and/or modify it.
|
||||
|
||||
For the developers' and authors' protection, the GPL clearly explains
|
||||
that there is no warranty for this free software. For both users' and
|
||||
authors' sake, the GPL requires that modified versions be marked as
|
||||
changed, so that their problems will not be attributed erroneously to
|
||||
authors of previous versions.
|
||||
|
||||
Some devices are designed to deny users access to install or run
|
||||
modified versions of the software inside them, although the manufacturer
|
||||
can do so. This is fundamentally incompatible with the aim of
|
||||
protecting users' freedom to change the software. The systematic
|
||||
pattern of such abuse occurs in the area of products for individuals to
|
||||
use, which is precisely where it is most unacceptable. Therefore, we
|
||||
have designed this version of the GPL to prohibit the practice for those
|
||||
products. If such problems arise substantially in other domains, we
|
||||
stand ready to extend this provision to those domains in future versions
|
||||
of the GPL, as needed to protect the freedom of users.
|
||||
|
||||
Finally, every program is threatened constantly by software patents.
|
||||
States should not allow patents to restrict development and use of
|
||||
software on general-purpose computers, but in those that do, we wish to
|
||||
avoid the special danger that patents applied to a free program could
|
||||
make it effectively proprietary. To prevent this, the GPL assures that
|
||||
patents cannot be used to render the program non-free.
|
||||
|
||||
The precise terms and conditions for copying, distribution and
|
||||
modification follow.
|
||||
|
||||
TERMS AND CONDITIONS
|
||||
|
||||
0. Definitions.
|
||||
|
||||
"This License" refers to version 3 of the GNU General Public License.
|
||||
|
||||
"Copyright" also means copyright-like laws that apply to other kinds of
|
||||
works, such as semiconductor masks.
|
||||
|
||||
"The Program" refers to any copyrightable work licensed under this
|
||||
License. Each licensee is addressed as "you". "Licensees" and
|
||||
"recipients" may be individuals or organizations.
|
||||
|
||||
To "modify" a work means to copy from or adapt all or part of the work
|
||||
in a fashion requiring copyright permission, other than the making of an
|
||||
exact copy. The resulting work is called a "modified version" of the
|
||||
earlier work or a work "based on" the earlier work.
|
||||
|
||||
A "covered work" means either the unmodified Program or a work based
|
||||
on the Program.
|
||||
|
||||
To "propagate" a work means to do anything with it that, without
|
||||
permission, would make you directly or secondarily liable for
|
||||
infringement under applicable copyright law, except executing it on a
|
||||
computer or modifying a private copy. Propagation includes copying,
|
||||
distribution (with or without modification), making available to the
|
||||
public, and in some countries other activities as well.
|
||||
|
||||
To "convey" a work means any kind of propagation that enables other
|
||||
parties to make or receive copies. Mere interaction with a user through
|
||||
a computer network, with no transfer of a copy, is not conveying.
|
||||
|
||||
An interactive user interface displays "Appropriate Legal Notices"
|
||||
to the extent that it includes a convenient and prominently visible
|
||||
feature that (1) displays an appropriate copyright notice, and (2)
|
||||
tells the user that there is no warranty for the work (except to the
|
||||
extent that warranties are provided), that licensees may convey the
|
||||
work under this License, and how to view a copy of this License. If
|
||||
the interface presents a list of user commands or options, such as a
|
||||
menu, a prominent item in the list meets this criterion.
|
||||
|
||||
1. Source Code.
|
||||
|
||||
The "source code" for a work means the preferred form of the work
|
||||
for making modifications to it. "Object code" means any non-source
|
||||
form of a work.
|
||||
|
||||
A "Standard Interface" means an interface that either is an official
|
||||
standard defined by a recognized standards body, or, in the case of
|
||||
interfaces specified for a particular programming language, one that
|
||||
is widely used among developers working in that language.
|
||||
|
||||
The "System Libraries" of an executable work include anything, other
|
||||
than the work as a whole, that (a) is included in the normal form of
|
||||
packaging a Major Component, but which is not part of that Major
|
||||
Component, and (b) serves only to enable use of the work with that
|
||||
Major Component, or to implement a Standard Interface for which an
|
||||
implementation is available to the public in source code form. A
|
||||
"Major Component", in this context, means a major essential component
|
||||
(kernel, window system, and so on) of the specific operating system
|
||||
(if any) on which the executable work runs, or a compiler used to
|
||||
produce the work, or an object code interpreter used to run it.
|
||||
|
||||
The "Corresponding Source" for a work in object code form means all
|
||||
the source code needed to generate, install, and (for an executable
|
||||
work) run the object code and to modify the work, including scripts to
|
||||
control those activities. However, it does not include the work's
|
||||
System Libraries, or general-purpose tools or generally available free
|
||||
programs which are used unmodified in performing those activities but
|
||||
which are not part of the work. For example, Corresponding Source
|
||||
includes interface definition files associated with source files for
|
||||
the work, and the source code for shared libraries and dynamically
|
||||
linked subprograms that the work is specifically designed to require,
|
||||
such as by intimate data communication or control flow between those
|
||||
subprograms and other parts of the work.
|
||||
|
||||
The Corresponding Source need not include anything that users
|
||||
can regenerate automatically from other parts of the Corresponding
|
||||
Source.
|
||||
|
||||
The Corresponding Source for a work in source code form is that
|
||||
same work.
|
||||
|
||||
2. Basic Permissions.
|
||||
|
||||
All rights granted under this License are granted for the term of
|
||||
copyright on the Program, and are irrevocable provided the stated
|
||||
conditions are met. This License explicitly affirms your unlimited
|
||||
permission to run the unmodified Program. The output from running a
|
||||
covered work is covered by this License only if the output, given its
|
||||
content, constitutes a covered work. This License acknowledges your
|
||||
rights of fair use or other equivalent, as provided by copyright law.
|
||||
|
||||
You may make, run and propagate covered works that you do not
|
||||
convey, without conditions so long as your license otherwise remains
|
||||
in force. You may convey covered works to others for the sole purpose
|
||||
of having them make modifications exclusively for you, or provide you
|
||||
with facilities for running those works, provided that you comply with
|
||||
the terms of this License in conveying all material for which you do
|
||||
not control copyright. Those thus making or running the covered works
|
||||
for you must do so exclusively on your behalf, under your direction
|
||||
and control, on terms that prohibit them from making any copies of
|
||||
your copyrighted material outside their relationship with you.
|
||||
|
||||
Conveying under any other circumstances is permitted solely under
|
||||
the conditions stated below. Sublicensing is not allowed; section 10
|
||||
makes it unnecessary.
|
||||
|
||||
3. Protecting Users' Legal Rights From Anti-Circumvention Law.
|
||||
|
||||
No covered work shall be deemed part of an effective technological
|
||||
measure under any applicable law fulfilling obligations under article
|
||||
11 of the WIPO copyright treaty adopted on 20 December 1996, or
|
||||
similar laws prohibiting or restricting circumvention of such
|
||||
measures.
|
||||
|
||||
When you convey a covered work, you waive any legal power to forbid
|
||||
circumvention of technological measures to the extent such circumvention
|
||||
is effected by exercising rights under this License with respect to
|
||||
the covered work, and you disclaim any intention to limit operation or
|
||||
modification of the work as a means of enforcing, against the work's
|
||||
users, your or third parties' legal rights to forbid circumvention of
|
||||
technological measures.
|
||||
|
||||
4. Conveying Verbatim Copies.
|
||||
|
||||
You may convey verbatim copies of the Program's source code as you
|
||||
receive it, in any medium, provided that you conspicuously and
|
||||
appropriately publish on each copy an appropriate copyright notice;
|
||||
keep intact all notices stating that this License and any
|
||||
non-permissive terms added in accord with section 7 apply to the code;
|
||||
keep intact all notices of the absence of any warranty; and give all
|
||||
recipients a copy of this License along with the Program.
|
||||
|
||||
You may charge any price or no price for each copy that you convey,
|
||||
and you may offer support or warranty protection for a fee.
|
||||
|
||||
5. Conveying Modified Source Versions.
|
||||
|
||||
You may convey a work based on the Program, or the modifications to
|
||||
produce it from the Program, in the form of source code under the
|
||||
terms of section 4, provided that you also meet all of these conditions:
|
||||
|
||||
a) The work must carry prominent notices stating that you modified
|
||||
it, and giving a relevant date.
|
||||
|
||||
b) The work must carry prominent notices stating that it is
|
||||
released under this License and any conditions added under section
|
||||
7. This requirement modifies the requirement in section 4 to
|
||||
"keep intact all notices".
|
||||
|
||||
c) You must license the entire work, as a whole, under this
|
||||
License to anyone who comes into possession of a copy. This
|
||||
License will therefore apply, along with any applicable section 7
|
||||
additional terms, to the whole of the work, and all its parts,
|
||||
regardless of how they are packaged. This License gives no
|
||||
permission to license the work in any other way, but it does not
|
||||
invalidate such permission if you have separately received it.
|
||||
|
||||
d) If the work has interactive user interfaces, each must display
|
||||
Appropriate Legal Notices; however, if the Program has interactive
|
||||
interfaces that do not display Appropriate Legal Notices, your
|
||||
work need not make them do so.
|
||||
|
||||
A compilation of a covered work with other separate and independent
|
||||
works, which are not by their nature extensions of the covered work,
|
||||
and which are not combined with it such as to form a larger program,
|
||||
in or on a volume of a storage or distribution medium, is called an
|
||||
"aggregate" if the compilation and its resulting copyright are not
|
||||
used to limit the access or legal rights of the compilation's users
|
||||
beyond what the individual works permit. Inclusion of a covered work
|
||||
in an aggregate does not cause this License to apply to the other
|
||||
parts of the aggregate.
|
||||
|
||||
6. Conveying Non-Source Forms.
|
||||
|
||||
You may convey a covered work in object code form under the terms
|
||||
of sections 4 and 5, provided that you also convey the
|
||||
machine-readable Corresponding Source under the terms of this License,
|
||||
in one of these ways:
|
||||
|
||||
a) Convey the object code in, or embodied in, a physical product
|
||||
(including a physical distribution medium), accompanied by the
|
||||
Corresponding Source fixed on a durable physical medium
|
||||
customarily used for software interchange.
|
||||
|
||||
b) Convey the object code in, or embodied in, a physical product
|
||||
(including a physical distribution medium), accompanied by a
|
||||
written offer, valid for at least three years and valid for as
|
||||
long as you offer spare parts or customer support for that product
|
||||
model, to give anyone who possesses the object code either (1) a
|
||||
copy of the Corresponding Source for all the software in the
|
||||
product that is covered by this License, on a durable physical
|
||||
medium customarily used for software interchange, for a price no
|
||||
more than your reasonable cost of physically performing this
|
||||
conveying of source, or (2) access to copy the
|
||||
Corresponding Source from a network server at no charge.
|
||||
|
||||
c) Convey individual copies of the object code with a copy of the
|
||||
written offer to provide the Corresponding Source. This
|
||||
alternative is allowed only occasionally and noncommercially, and
|
||||
only if you received the object code with such an offer, in accord
|
||||
with subsection 6b.
|
||||
|
||||
d) Convey the object code by offering access from a designated
|
||||
place (gratis or for a charge), and offer equivalent access to the
|
||||
Corresponding Source in the same way through the same place at no
|
||||
further charge. You need not require recipients to copy the
|
||||
Corresponding Source along with the object code. If the place to
|
||||
copy the object code is a network server, the Corresponding Source
|
||||
may be on a different server (operated by you or a third party)
|
||||
that supports equivalent copying facilities, provided you maintain
|
||||
clear directions next to the object code saying where to find the
|
||||
Corresponding Source. Regardless of what server hosts the
|
||||
Corresponding Source, you remain obligated to ensure that it is
|
||||
available for as long as needed to satisfy these requirements.
|
||||
|
||||
e) Convey the object code using peer-to-peer transmission, provided
|
||||
you inform other peers where the object code and Corresponding
|
||||
Source of the work are being offered to the general public at no
|
||||
charge under subsection 6d.
|
||||
|
||||
A separable portion of the object code, whose source code is excluded
|
||||
from the Corresponding Source as a System Library, need not be
|
||||
included in conveying the object code work.
|
||||
|
||||
A "User Product" is either (1) a "consumer product", which means any
|
||||
tangible personal property which is normally used for personal, family,
|
||||
or household purposes, or (2) anything designed or sold for incorporation
|
||||
into a dwelling. In determining whether a product is a consumer product,
|
||||
doubtful cases shall be resolved in favor of coverage. For a particular
|
||||
product received by a particular user, "normally used" refers to a
|
||||
typical or common use of that class of product, regardless of the status
|
||||
of the particular user or of the way in which the particular user
|
||||
actually uses, or expects or is expected to use, the product. A product
|
||||
is a consumer product regardless of whether the product has substantial
|
||||
commercial, industrial or non-consumer uses, unless such uses represent
|
||||
the only significant mode of use of the product.
|
||||
|
||||
"Installation Information" for a User Product means any methods,
|
||||
procedures, authorization keys, or other information required to install
|
||||
and execute modified versions of a covered work in that User Product from
|
||||
a modified version of its Corresponding Source. The information must
|
||||
suffice to ensure that the continued functioning of the modified object
|
||||
code is in no case prevented or interfered with solely because
|
||||
modification has been made.
|
||||
|
||||
If you convey an object code work under this section in, or with, or
|
||||
specifically for use in, a User Product, and the conveying occurs as
|
||||
part of a transaction in which the right of possession and use of the
|
||||
User Product is transferred to the recipient in perpetuity or for a
|
||||
fixed term (regardless of how the transaction is characterized), the
|
||||
Corresponding Source conveyed under this section must be accompanied
|
||||
by the Installation Information. But this requirement does not apply
|
||||
if neither you nor any third party retains the ability to install
|
||||
modified object code on the User Product (for example, the work has
|
||||
been installed in ROM).
|
||||
|
||||
The requirement to provide Installation Information does not include a
|
||||
requirement to continue to provide support service, warranty, or updates
|
||||
for a work that has been modified or installed by the recipient, or for
|
||||
the User Product in which it has been modified or installed. Access to a
|
||||
network may be denied when the modification itself materially and
|
||||
adversely affects the operation of the network or violates the rules and
|
||||
protocols for communication across the network.
|
||||
|
||||
Corresponding Source conveyed, and Installation Information provided,
|
||||
in accord with this section must be in a format that is publicly
|
||||
documented (and with an implementation available to the public in
|
||||
source code form), and must require no special password or key for
|
||||
unpacking, reading or copying.
|
||||
|
||||
7. Additional Terms.
|
||||
|
||||
"Additional permissions" are terms that supplement the terms of this
|
||||
License by making exceptions from one or more of its conditions.
|
||||
Additional permissions that are applicable to the entire Program shall
|
||||
be treated as though they were included in this License, to the extent
|
||||
that they are valid under applicable law. If additional permissions
|
||||
apply only to part of the Program, that part may be used separately
|
||||
under those permissions, but the entire Program remains governed by
|
||||
this License without regard to the additional permissions.
|
||||
|
||||
When you convey a copy of a covered work, you may at your option
|
||||
remove any additional permissions from that copy, or from any part of
|
||||
it. (Additional permissions may be written to require their own
|
||||
removal in certain cases when you modify the work.) You may place
|
||||
additional permissions on material, added by you to a covered work,
|
||||
for which you have or can give appropriate copyright permission.
|
||||
|
||||
Notwithstanding any other provision of this License, for material you
|
||||
add to a covered work, you may (if authorized by the copyright holders of
|
||||
that material) supplement the terms of this License with terms:
|
||||
|
||||
a) Disclaiming warranty or limiting liability differently from the
|
||||
terms of sections 15 and 16 of this License; or
|
||||
|
||||
b) Requiring preservation of specified reasonable legal notices or
|
||||
author attributions in that material or in the Appropriate Legal
|
||||
Notices displayed by works containing it; or
|
||||
|
||||
c) Prohibiting misrepresentation of the origin of that material, or
|
||||
requiring that modified versions of such material be marked in
|
||||
reasonable ways as different from the original version; or
|
||||
|
||||
d) Limiting the use for publicity purposes of names of licensors or
|
||||
authors of the material; or
|
||||
|
||||
e) Declining to grant rights under trademark law for use of some
|
||||
trade names, trademarks, or service marks; or
|
||||
|
||||
f) Requiring indemnification of licensors and authors of that
|
||||
material by anyone who conveys the material (or modified versions of
|
||||
it) with contractual assumptions of liability to the recipient, for
|
||||
any liability that these contractual assumptions directly impose on
|
||||
those licensors and authors.
|
||||
|
||||
All other non-permissive additional terms are considered "further
|
||||
restrictions" within the meaning of section 10. If the Program as you
|
||||
received it, or any part of it, contains a notice stating that it is
|
||||
governed by this License along with a term that is a further
|
||||
restriction, you may remove that term. If a license document contains
|
||||
a further restriction but permits relicensing or conveying under this
|
||||
License, you may add to a covered work material governed by the terms
|
||||
of that license document, provided that the further restriction does
|
||||
not survive such relicensing or conveying.
|
||||
|
||||
If you add terms to a covered work in accord with this section, you
|
||||
must place, in the relevant source files, a statement of the
|
||||
additional terms that apply to those files, or a notice indicating
|
||||
where to find the applicable terms.
|
||||
|
||||
Additional terms, permissive or non-permissive, may be stated in the
|
||||
form of a separately written license, or stated as exceptions;
|
||||
the above requirements apply either way.
|
||||
|
||||
8. Termination.
|
||||
|
||||
You may not propagate or modify a covered work except as expressly
|
||||
provided under this License. Any attempt otherwise to propagate or
|
||||
modify it is void, and will automatically terminate your rights under
|
||||
this License (including any patent licenses granted under the third
|
||||
paragraph of section 11).
|
||||
|
||||
However, if you cease all violation of this License, then your
|
||||
license from a particular copyright holder is reinstated (a)
|
||||
provisionally, unless and until the copyright holder explicitly and
|
||||
finally terminates your license, and (b) permanently, if the copyright
|
||||
holder fails to notify you of the violation by some reasonable means
|
||||
prior to 60 days after the cessation.
|
||||
|
||||
Moreover, your license from a particular copyright holder is
|
||||
reinstated permanently if the copyright holder notifies you of the
|
||||
violation by some reasonable means, this is the first time you have
|
||||
received notice of violation of this License (for any work) from that
|
||||
copyright holder, and you cure the violation prior to 30 days after
|
||||
your receipt of the notice.
|
||||
|
||||
Termination of your rights under this section does not terminate the
|
||||
licenses of parties who have received copies or rights from you under
|
||||
this License. If your rights have been terminated and not permanently
|
||||
reinstated, you do not qualify to receive new licenses for the same
|
||||
material under section 10.
|
||||
|
||||
9. Acceptance Not Required for Having Copies.
|
||||
|
||||
You are not required to accept this License in order to receive or
|
||||
run a copy of the Program. Ancillary propagation of a covered work
|
||||
occurring solely as a consequence of using peer-to-peer transmission
|
||||
to receive a copy likewise does not require acceptance. However,
|
||||
nothing other than this License grants you permission to propagate or
|
||||
modify any covered work. These actions infringe copyright if you do
|
||||
not accept this License. Therefore, by modifying or propagating a
|
||||
covered work, you indicate your acceptance of this License to do so.
|
||||
|
||||
10. Automatic Licensing of Downstream Recipients.
|
||||
|
||||
Each time you convey a covered work, the recipient automatically
|
||||
receives a license from the original licensors, to run, modify and
|
||||
propagate that work, subject to this License. You are not responsible
|
||||
for enforcing compliance by third parties with this License.
|
||||
|
||||
An "entity transaction" is a transaction transferring control of an
|
||||
organization, or substantially all assets of one, or subdividing an
|
||||
organization, or merging organizations. If propagation of a covered
|
||||
work results from an entity transaction, each party to that
|
||||
transaction who receives a copy of the work also receives whatever
|
||||
licenses to the work the party's predecessor in interest had or could
|
||||
give under the previous paragraph, plus a right to possession of the
|
||||
Corresponding Source of the work from the predecessor in interest, if
|
||||
the predecessor has it or can get it with reasonable efforts.
|
||||
|
||||
You may not impose any further restrictions on the exercise of the
|
||||
rights granted or affirmed under this License. For example, you may
|
||||
not impose a license fee, royalty, or other charge for exercise of
|
||||
rights granted under this License, and you may not initiate litigation
|
||||
(including a cross-claim or counterclaim in a lawsuit) alleging that
|
||||
any patent claim is infringed by making, using, selling, offering for
|
||||
sale, or importing the Program or any portion of it.
|
||||
|
||||
11. Patents.
|
||||
|
||||
A "contributor" is a copyright holder who authorizes use under this
|
||||
License of the Program or a work on which the Program is based. The
|
||||
work thus licensed is called the contributor's "contributor version".
|
||||
|
||||
A contributor's "essential patent claims" are all patent claims
|
||||
owned or controlled by the contributor, whether already acquired or
|
||||
hereafter acquired, that would be infringed by some manner, permitted
|
||||
by this License, of making, using, or selling its contributor version,
|
||||
but do not include claims that would be infringed only as a
|
||||
consequence of further modification of the contributor version. For
|
||||
purposes of this definition, "control" includes the right to grant
|
||||
patent sublicenses in a manner consistent with the requirements of
|
||||
this License.
|
||||
|
||||
Each contributor grants you a non-exclusive, worldwide, royalty-free
|
||||
patent license under the contributor's essential patent claims, to
|
||||
make, use, sell, offer for sale, import and otherwise run, modify and
|
||||
propagate the contents of its contributor version.
|
||||
|
||||
In the following three paragraphs, a "patent license" is any express
|
||||
agreement or commitment, however denominated, not to enforce a patent
|
||||
(such as an express permission to practice a patent or covenant not to
|
||||
sue for patent infringement). To "grant" such a patent license to a
|
||||
party means to make such an agreement or commitment not to enforce a
|
||||
patent against the party.
|
||||
|
||||
If you convey a covered work, knowingly relying on a patent license,
|
||||
and the Corresponding Source of the work is not available for anyone
|
||||
to copy, free of charge and under the terms of this License, through a
|
||||
publicly available network server or other readily accessible means,
|
||||
then you must either (1) cause the Corresponding Source to be so
|
||||
available, or (2) arrange to deprive yourself of the benefit of the
|
||||
patent license for this particular work, or (3) arrange, in a manner
|
||||
consistent with the requirements of this License, to extend the patent
|
||||
license to downstream recipients. "Knowingly relying" means you have
|
||||
actual knowledge that, but for the patent license, your conveying the
|
||||
covered work in a country, or your recipient's use of the covered work
|
||||
in a country, would infringe one or more identifiable patents in that
|
||||
country that you have reason to believe are valid.
|
||||
|
||||
If, pursuant to or in connection with a single transaction or
|
||||
arrangement, you convey, or propagate by procuring conveyance of, a
|
||||
covered work, and grant a patent license to some of the parties
|
||||
receiving the covered work authorizing them to use, propagate, modify
|
||||
or convey a specific copy of the covered work, then the patent license
|
||||
you grant is automatically extended to all recipients of the covered
|
||||
work and works based on it.
|
||||
|
||||
A patent license is "discriminatory" if it does not include within
|
||||
the scope of its coverage, prohibits the exercise of, or is
|
||||
conditioned on the non-exercise of one or more of the rights that are
|
||||
specifically granted under this License. You may not convey a covered
|
||||
work if you are a party to an arrangement with a third party that is
|
||||
in the business of distributing software, under which you make payment
|
||||
to the third party based on the extent of your activity of conveying
|
||||
the work, and under which the third party grants, to any of the
|
||||
parties who would receive the covered work from you, a discriminatory
|
||||
patent license (a) in connection with copies of the covered work
|
||||
conveyed by you (or copies made from those copies), or (b) primarily
|
||||
for and in connection with specific products or compilations that
|
||||
contain the covered work, unless you entered into that arrangement,
|
||||
or that patent license was granted, prior to 28 March 2007.
|
||||
|
||||
Nothing in this License shall be construed as excluding or limiting
|
||||
any implied license or other defenses to infringement that may
|
||||
otherwise be available to you under applicable patent law.
|
||||
|
||||
12. No Surrender of Others' Freedom.
|
||||
|
||||
If conditions are imposed on you (whether by court order, agreement or
|
||||
otherwise) that contradict the conditions of this License, they do not
|
||||
excuse you from the conditions of this License. If you cannot convey a
|
||||
covered work so as to satisfy simultaneously your obligations under this
|
||||
License and any other pertinent obligations, then as a consequence you may
|
||||
not convey it at all. For example, if you agree to terms that obligate you
|
||||
to collect a royalty for further conveying from those to whom you convey
|
||||
the Program, the only way you could satisfy both those terms and this
|
||||
License would be to refrain entirely from conveying the Program.
|
||||
|
||||
13. Use with the GNU Affero General Public License.
|
||||
|
||||
Notwithstanding any other provision of this License, you have
|
||||
permission to link or combine any covered work with a work licensed
|
||||
under version 3 of the GNU Affero General Public License into a single
|
||||
combined work, and to convey the resulting work. The terms of this
|
||||
License will continue to apply to the part which is the covered work,
|
||||
but the special requirements of the GNU Affero General Public License,
|
||||
section 13, concerning interaction through a network will apply to the
|
||||
combination as such.
|
||||
|
||||
14. Revised Versions of this License.
|
||||
|
||||
The Free Software Foundation may publish revised and/or new versions of
|
||||
the GNU General Public License from time to time. Such new versions will
|
||||
be similar in spirit to the present version, but may differ in detail to
|
||||
address new problems or concerns.
|
||||
|
||||
Each version is given a distinguishing version number. If the
|
||||
Program specifies that a certain numbered version of the GNU General
|
||||
Public License "or any later version" applies to it, you have the
|
||||
option of following the terms and conditions either of that numbered
|
||||
version or of any later version published by the Free Software
|
||||
Foundation. If the Program does not specify a version number of the
|
||||
GNU General Public License, you may choose any version ever published
|
||||
by the Free Software Foundation.
|
||||
|
||||
If the Program specifies that a proxy can decide which future
|
||||
versions of the GNU General Public License can be used, that proxy's
|
||||
public statement of acceptance of a version permanently authorizes you
|
||||
to choose that version for the Program.
|
||||
|
||||
Later license versions may give you additional or different
|
||||
permissions. However, no additional obligations are imposed on any
|
||||
author or copyright holder as a result of your choosing to follow a
|
||||
later version.
|
||||
|
||||
15. Disclaimer of Warranty.
|
||||
|
||||
THERE IS NO WARRANTY FOR THE PROGRAM, TO THE EXTENT PERMITTED BY
|
||||
APPLICABLE LAW. EXCEPT WHEN OTHERWISE STATED IN WRITING THE COPYRIGHT
|
||||
HOLDERS AND/OR OTHER PARTIES PROVIDE THE PROGRAM "AS IS" WITHOUT WARRANTY
|
||||
OF ANY KIND, EITHER EXPRESSED OR IMPLIED, INCLUDING, BUT NOT LIMITED TO,
|
||||
THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
|
||||
PURPOSE. THE ENTIRE RISK AS TO THE QUALITY AND PERFORMANCE OF THE PROGRAM
|
||||
IS WITH YOU. SHOULD THE PROGRAM PROVE DEFECTIVE, YOU ASSUME THE COST OF
|
||||
ALL NECESSARY SERVICING, REPAIR OR CORRECTION.
|
||||
|
||||
16. Limitation of Liability.
|
||||
|
||||
IN NO EVENT UNLESS REQUIRED BY APPLICABLE LAW OR AGREED TO IN WRITING
|
||||
WILL ANY COPYRIGHT HOLDER, OR ANY OTHER PARTY WHO MODIFIES AND/OR CONVEYS
|
||||
THE PROGRAM AS PERMITTED ABOVE, BE LIABLE TO YOU FOR DAMAGES, INCLUDING ANY
|
||||
GENERAL, SPECIAL, INCIDENTAL OR CONSEQUENTIAL DAMAGES ARISING OUT OF THE
|
||||
USE OR INABILITY TO USE THE PROGRAM (INCLUDING BUT NOT LIMITED TO LOSS OF
|
||||
DATA OR DATA BEING RENDERED INACCURATE OR LOSSES SUSTAINED BY YOU OR THIRD
|
||||
PARTIES OR A FAILURE OF THE PROGRAM TO OPERATE WITH ANY OTHER PROGRAMS),
|
||||
EVEN IF SUCH HOLDER OR OTHER PARTY HAS BEEN ADVISED OF THE POSSIBILITY OF
|
||||
SUCH DAMAGES.
|
||||
|
||||
17. Interpretation of Sections 15 and 16.
|
||||
|
||||
If the disclaimer of warranty and limitation of liability provided
|
||||
above cannot be given local legal effect according to their terms,
|
||||
reviewing courts shall apply local law that most closely approximates
|
||||
an absolute waiver of all civil liability in connection with the
|
||||
Program, unless a warranty or assumption of liability accompanies a
|
||||
copy of the Program in return for a fee.
|
||||
|
||||
END OF TERMS AND CONDITIONS
|
||||
|
||||
How to Apply These Terms to Your New Programs
|
||||
|
||||
If you develop a new program, and you want it to be of the greatest
|
||||
possible use to the public, the best way to achieve this is to make it
|
||||
free software which everyone can redistribute and change under these terms.
|
||||
|
||||
To do so, attach the following notices to the program. It is safest
|
||||
to attach them to the start of each source file to most effectively
|
||||
state the exclusion of warranty; and each file should have at least
|
||||
the "copyright" line and a pointer to where the full notice is found.
|
||||
|
||||
<one line to give the program's name and a brief idea of what it does.>
|
||||
Copyright (C) <year> <name of author>
|
||||
|
||||
This program 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.
|
||||
|
||||
This program 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 this program. If not, see <https://www.gnu.org/licenses/>.
|
||||
|
||||
Also add information on how to contact you by electronic and paper mail.
|
||||
|
||||
If the program does terminal interaction, make it output a short
|
||||
notice like this when it starts in an interactive mode:
|
||||
|
||||
<program> Copyright (C) <year> <name of author>
|
||||
This program comes with ABSOLUTELY NO WARRANTY; for details type `show w'.
|
||||
This is free software, and you are welcome to redistribute it
|
||||
under certain conditions; type `show c' for details.
|
||||
|
||||
The hypothetical commands `show w' and `show c' should show the appropriate
|
||||
parts of the General Public License. Of course, your program's commands
|
||||
might be different; for a GUI interface, you would use an "about box".
|
||||
|
||||
You should also get your employer (if you work as a programmer) or school,
|
||||
if any, to sign a "copyright disclaimer" for the program, if necessary.
|
||||
For more information on this, and how to apply and follow the GNU GPL, see
|
||||
<https://www.gnu.org/licenses/>.
|
||||
|
||||
The GNU General Public License does not permit incorporating your program
|
||||
into proprietary programs. If your program is a subroutine library, you
|
||||
may consider it more useful to permit linking proprietary applications with
|
||||
the library. If this is what you want to do, use the GNU Lesser General
|
||||
Public License instead of this License. But first, please read
|
||||
<https://www.gnu.org/licenses/why-not-lgpl.html>.
|
|
@ -1,137 +0,0 @@
|
|||
//---------------------------------------------------------------------------
|
||||
// @syndicate-lang/driver-unixsocket-node, Unix socket support for Syndicate/js
|
||||
// Copyright (C) 2016-2018 Tony Garnock-Jones <tonyg@leastfixedpoint.com>
|
||||
//
|
||||
// This program 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.
|
||||
//
|
||||
// This program 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 this program. If not, see <https://www.gnu.org/licenses/>.
|
||||
//---------------------------------------------------------------------------
|
||||
|
||||
import { currentFacet, Observe, Dataspace, genUuid, Bytes } from "@syndicate-lang/core";
|
||||
const net = require('net');
|
||||
const fs = require('fs');
|
||||
|
||||
assertion type UnixSocketConnection(id, spec);
|
||||
assertion type UnixSocketAccepted(id);
|
||||
assertion type UnixSocketRejected(id, reason);
|
||||
|
||||
// message type LineIn(id, line); // TODO: abstract out this common protocol
|
||||
message type DataIn(id, chunk);
|
||||
message type DataOut(id, chunk);
|
||||
|
||||
assertion type UnixSocketClient(path);
|
||||
assertion type UnixSocketServer(path);
|
||||
|
||||
export {
|
||||
UnixSocketConnection, UnixSocketAccepted, UnixSocketRejected,
|
||||
DataOut, DataIn,
|
||||
UnixSocketClient, UnixSocketServer,
|
||||
};
|
||||
|
||||
spawn named 'driver/UnixSocketDriver' {
|
||||
during Observe(UnixSocketConnection(_, UnixSocketServer($path)))
|
||||
spawn named ['driver/UnixSocketServer', path] {
|
||||
let finish = Dataspace.backgroundTask();
|
||||
on stop finish();
|
||||
|
||||
let server = net.createServer(Dataspace.wrapExternal((socket) => {
|
||||
let id = genUuid('unix:' + path);
|
||||
spawn named ['driver/UnixSocketInbound', id] {
|
||||
assert UnixSocketConnection(id, UnixSocketServer(path));
|
||||
on asserted UnixSocketAccepted(id) _connectionCommon.call(this, currentFacet(), id, socket, true);
|
||||
stop on retracted UnixSocketAccepted(id);
|
||||
stop on asserted UnixSocketRejected(id, _);
|
||||
}
|
||||
}));
|
||||
|
||||
let retried = false;
|
||||
server.on('error', Dataspace.wrapExternal((err) => {
|
||||
if (err.code === 'EADDRINUSE') {
|
||||
// Potentially-stale socket file sitting around. Try
|
||||
// connecting to it to see if it is alive, and remove it if
|
||||
// not.
|
||||
if (retried) {
|
||||
// We're on our second go already, give up.
|
||||
throw err;
|
||||
} else {
|
||||
retried = true;
|
||||
const probe = new net.Socket();
|
||||
probe.on('error', Dataspace.wrapExternal((e) => {
|
||||
if (e.code === 'ECONNREFUSED') {
|
||||
fs.unlinkSync(path);
|
||||
server.listen(path);
|
||||
} else {
|
||||
// Something else went wrong! Give up the original listen.
|
||||
console.error('Problem while probing potentially-stale socket', e);
|
||||
throw err;
|
||||
}
|
||||
}));
|
||||
probe.connect(path, Dataspace.wrapExternal((sock) => {
|
||||
try { sock.destroy() } catch (e) { console.error(e); }
|
||||
throw err;
|
||||
}));
|
||||
}
|
||||
} else {
|
||||
throw err;
|
||||
}
|
||||
}));
|
||||
server.listen(path);
|
||||
on stop try { server.close() } catch (e) { console.error(e); }
|
||||
}
|
||||
|
||||
during UnixSocketConnection($id, UnixSocketClient($path))
|
||||
spawn named ['driver/UnixSocketOutbound', id, path] {
|
||||
let finish = Dataspace.backgroundTask();
|
||||
on stop finish();
|
||||
|
||||
let socket = new net.Socket();
|
||||
|
||||
on start {
|
||||
socket.connect(path);
|
||||
_connectionCommon.call(this, currentFacet(), id, socket, false);
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
function _connectionCommon(rootFacet, id, socket, established) {
|
||||
react {
|
||||
field this.ready = established;
|
||||
|
||||
socket.on('ready', Dataspace.wrapExternal(() => {
|
||||
if (!established) react assert UnixSocketAccepted(id);
|
||||
this.ready = true;
|
||||
}));
|
||||
socket.on('error', Dataspace.wrapExternal((err) => {
|
||||
if (!this.ready) {
|
||||
// Pre-connection error: "rejected"
|
||||
react assert UnixSocketRejected(id, err);
|
||||
} else {
|
||||
// Post-establishment error
|
||||
if (err.errno !== 'ECONNRESET') {
|
||||
console.error(err);
|
||||
}
|
||||
rootFacet.stop();
|
||||
}
|
||||
}));
|
||||
socket.on('close', Dataspace.wrapExternal(() => { rootFacet.stop(); }));
|
||||
|
||||
on stop try { socket.destroy() } catch (e) { console.error(e); }
|
||||
|
||||
on start react stop on asserted Observe(DataIn(id, _)) {
|
||||
socket.on('data', Dataspace.wrapExternal((data) => { send DataIn(id, Bytes.fromIO(data)); }));
|
||||
}
|
||||
|
||||
on message DataOut(id, $data) {
|
||||
socket.write(Bytes.toIO(data));
|
||||
}
|
||||
}
|
||||
}
|
|
@ -17,7 +17,7 @@
|
|||
"@syndicate-lang/core": "^0.0.18",
|
||||
"@syndicate-lang/driver-browser-ui": "^0.0.16",
|
||||
"@syndicate-lang/driver-http-node": "^0.0.15",
|
||||
"@syndicate-lang/driver-tcp-node": "^0.0.5",
|
||||
"@syndicate-lang/driver-streams-node": "^0.0.0",
|
||||
"@syndicate-lang/driver-timer": "^0.0.19",
|
||||
"@syndicate-lang/driver-udp-node": "^0.0.9",
|
||||
"@syndicate-lang/driver-websocket": "^0.0.10",
|
||||
|
|
|
@ -16,26 +16,34 @@
|
|||
// along with this program. If not, see <https://www.gnu.org/licenses/>.
|
||||
//---------------------------------------------------------------------------
|
||||
|
||||
import { Dataspace, genUuid, currentFacet } from "@syndicate-lang/core";
|
||||
const Tcp = activate require("@syndicate-lang/driver-tcp-node");
|
||||
const split = require('split');
|
||||
import { Observe, Dataspace, genUuid, currentFacet } from "@syndicate-lang/core";
|
||||
const S = activate require("@syndicate-lang/driver-streams-node");
|
||||
const net = require('net');
|
||||
|
||||
const stdin = genUuid('stdin');
|
||||
const stdout = genUuid('stdout');
|
||||
spawn named 'stdioServer' {
|
||||
during Observe(S.Readable(stdin)) spawn S.readableStreamBehaviour(stdin, process.stdin);
|
||||
during Observe(S.Writable(stdout)) spawn S.writableStreamBehaviour(stdout, process.stdout);
|
||||
}
|
||||
|
||||
spawn named 'chatclient' {
|
||||
const id = genUuid('tcpconn');
|
||||
const rootFacet = currentFacet();
|
||||
|
||||
assert Tcp.TcpConnection(id, Tcp.TcpAddress('localhost', 5999));
|
||||
stop on asserted Tcp.TcpRejected(id, $err) {
|
||||
assert S.OutgoingConnection(id, S.TcpAddress('localhost', 5999));
|
||||
stop on message S.ConnectionRejected(id, $err) {
|
||||
console.error('Connection rejected', err);
|
||||
}
|
||||
during Tcp.TcpAccepted(id) {
|
||||
on start process.stdin.pipe(split())
|
||||
.on('error', Dataspace.wrapExternal((err) => { throw err; }))
|
||||
.on('close', Dataspace.wrapExternal(() => { rootFacet.stop(); }))
|
||||
.on('data', Dataspace.wrapExternal(
|
||||
(data) => { if (data) send Tcp.DataOut(id, data + '\n'); }));
|
||||
on stop process.stdin.destroy();
|
||||
stop on message S.ConnectionAccepted(id) {
|
||||
react {
|
||||
stop on retracted S.Duplex(id);
|
||||
stop on retracted S.Readable(stdin);
|
||||
stop on retracted S.Writable(stdout);
|
||||
|
||||
on message Tcp.LineIn(id, $line) { console.log(line.toString('utf-8')); }
|
||||
assert S.BackPressure(stdin, id);
|
||||
assert S.BackPressure(id, stdout);
|
||||
|
||||
on message S.Line(stdin, $line) send S.Push(id, line.toString('utf-8') + '\n', null);
|
||||
on message S.Line(id, $line) send S.Push(stdout, line.toString('utf-8') + '\n', null);
|
||||
}
|
||||
}
|
||||
}
|
||||
|
|
|
@ -17,23 +17,25 @@
|
|||
//---------------------------------------------------------------------------
|
||||
|
||||
const { genUuid } = require("@syndicate-lang/core");
|
||||
const Tcp = activate require("@syndicate-lang/driver-tcp-node");
|
||||
const S = activate require("@syndicate-lang/driver-streams-node");
|
||||
|
||||
message type Speak(who, what);
|
||||
assertion type Present(who);
|
||||
|
||||
spawn named 'chatserver' {
|
||||
during Tcp.TcpConnection($id, Tcp.TcpListener(5999)) spawn {
|
||||
assert Tcp.TcpAccepted(id);
|
||||
on asserted S.IncomingConnection($id, S.TcpListener(5999)) {
|
||||
const me = genUuid('user');
|
||||
spawn named ['connectedUser', me] {
|
||||
stop on retracted S.Duplex(id);
|
||||
|
||||
assert Present(me);
|
||||
during Present($who) {
|
||||
on start send Tcp.DataOut(id, `${who} arrived.\n`);
|
||||
on stop send Tcp.DataOut(id, `${who} departed.\n`);
|
||||
assert Present(me);
|
||||
during Present($who) {
|
||||
on start send S.Push(id, `${who} arrived.\n`, null);
|
||||
on stop send S.Push(id, `${who} departed.\n`, null);
|
||||
}
|
||||
|
||||
on message S.Line(id, $line) send Speak(me, line);
|
||||
on message Speak($who, $what) send S.Push(id, `${who}: ${what}\n`, null);
|
||||
}
|
||||
|
||||
on message Tcp.LineIn(id, $line) send Speak(me, line);
|
||||
on message Speak($who, $what) send Tcp.DataOut(id, `${who}: ${what}\n`);
|
||||
}
|
||||
}
|
||||
|
|
Loading…
Reference in New Issue