blinksocks/lib/transports/udp.js
2019-02-13 13:18:48 +08:00

125 lines
3.0 KiB
JavaScript

"use strict";
Object.defineProperty(exports, "__esModule", {
value: true
});
exports.UdpOutbound = exports.UdpInbound = void 0;
var _dgram = _interopRequireDefault(require("dgram"));
var _defs = require("./defs");
var _utils = require("../utils");
function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }
function _defineProperty(obj, key, value) { if (key in obj) { Object.defineProperty(obj, key, { value: value, enumerable: true, configurable: true, writable: true }); } else { obj[key] = value; } return obj; }
class UdpInbound extends _defs.Inbound {
constructor(props) {
super(props);
_defineProperty(this, "_socket", null);
_defineProperty(this, "_rinfo", null);
_defineProperty(this, "onReceive", (buffer, rinfo) => {
this._rinfo = rinfo;
this.emit('data', buffer);
});
this._socket = this._conn;
}
write(buffer) {
const {
address,
port
} = this._rinfo;
const onSendError = err => {
if (err) {
_utils.logger.warn(`[udp:inbound] [${this.remote}]: ${err.message}`);
}
};
if (this._config.is_client) {
const isSs = this._config.presets.some(({
name
}) => 'ss-base' === name);
this._socket.send(buffer, port, address, isSs, onSendError);
} else {
this._socket.send(buffer, port, address, onSendError);
}
}
close() {
if (this._socket !== null && this._socket._handle !== null) {
this._socket = null;
this.emit('close');
}
}
}
exports.UdpInbound = UdpInbound;
class UdpOutbound extends _defs.Outbound {
constructor(props) {
super(props);
_defineProperty(this, "_socket", null);
_defineProperty(this, "_targetHost", null);
_defineProperty(this, "_targetPort", null);
_defineProperty(this, "onReceive", buffer => {
this.emit('data', buffer);
});
this._socket = _dgram.default.createSocket('udp4');
this._socket.on('message', this.onReceive);
}
write(buffer) {
const host = this._targetHost;
const port = this._targetPort;
if (host === null || port === null) {
_utils.logger.error('[udp:outbound] fail to send udp data, target address was not initialized.');
} else if (port <= 0 || port >= 65536) {
_utils.logger.error(`[udp:outbound] fail to send udp data, target port "${port}" is invalid.`);
} else {
this._socket.send(buffer, port, host, err => {
if (err) {
_utils.logger.warn(`[udp:outbound] [${this.remote}]: ${err.message}`);
}
});
}
}
connect(host, port) {
if (this._config.is_client) {
this._targetHost = this._config.server_host;
this._targetPort = this._config.server_port;
} else {
this._targetHost = host;
this._targetPort = port;
}
}
close() {
if (this._socket !== null && this._socket._handle !== null) {
this._socket.close();
this._socket = null;
this.emit('close');
}
}
}
exports.UdpOutbound = UdpOutbound;