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"use strict";
Object.defineProperty(exports, "__esModule", { value: true });
exports.CloudflareSocket = void 0;
const events_1 = require("events");
/**
* Wrapper around the Cloudflare built-in socket that can be used by the `Connection`.
*/
class CloudflareSocket extends events_1.EventEmitter {
constructor(ssl) {
super();
this.ssl = ssl;
this.writable = false;
this.destroyed = false;
this._upgrading = false;
this._upgraded = false;
this._cfSocket = null;
this._cfWriter = null;
this._cfReader = null;
}
setNoDelay() {
return this;
}
setKeepAlive() {
return this;
}
ref() {
return this;
}
unref() {
return this;
}
async connect(port, host, connectListener) {
try {
log('connecting');
if (connectListener)
this.once('connect', connectListener);
const options = this.ssl ? { secureTransport: 'starttls' } : {};
const mod = await import('cloudflare:sockets');
const connect = mod.connect;
this._cfSocket = connect(`${host}:${port}`, options);
this._cfWriter = this._cfSocket.writable.getWriter();
this._addClosedHandler();
this._cfReader = this._cfSocket.readable.getReader();
if (this.ssl) {
this._listenOnce().catch((e) => this.emit('error', e));
}
else {
this._listen().catch((e) => this.emit('error', e));
}
await this._cfWriter.ready;
log('socket ready');
this.writable = true;
this.emit('connect');
return this;
}
catch (e) {
this.emit('error', e);
}
}
async _listen() {
// eslint-disable-next-line no-constant-condition
while (true) {
log('awaiting receive from CF socket');
const { done, value } = await this._cfReader.read();
log('CF socket received:', done, value);
if (done) {
log('done');
break;
}
this.emit('data', Buffer.from(value));
}
}
async _listenOnce() {
log('awaiting first receive from CF socket');
const { done, value } = await this._cfReader.read();
log('First CF socket received:', done, value);
this.emit('data', Buffer.from(value));
}
write(data, encoding = 'utf8', callback = () => { }) {
if (data.length === 0)
return callback();
if (typeof data === 'string')
data = Buffer.from(data, encoding);
log('sending data direct:', data);
this._cfWriter.write(data).then(() => {
log('data sent');
callback();
}, (err) => {
log('send error', err);
callback(err);
});
return true;
}
end(data = Buffer.alloc(0), encoding = 'utf8', callback = () => { }) {
log('ending CF socket');
this.write(data, encoding, (err) => {
this._cfSocket.close();
if (callback)
callback(err);
});
return this;
}
destroy(reason) {
log('destroying CF socket', reason);
this.destroyed = true;
return this.end();
}
startTls(options) {
if (this._upgraded) {
// Don't try to upgrade again.
this.emit('error', 'Cannot call `startTls()` more than once on a socket');
return;
}
this._cfWriter.releaseLock();
this._cfReader.releaseLock();
this._upgrading = true;
this._cfSocket = this._cfSocket.startTls(options);
this._cfWriter = this._cfSocket.writable.getWriter();
this._cfReader = this._cfSocket.readable.getReader();
this._addClosedHandler();
this._listen().catch((e) => this.emit('error', e));
}
_addClosedHandler() {
this._cfSocket.closed.then(() => {
if (!this._upgrading) {
log('CF socket closed');
this._cfSocket = null;
this.emit('close');
}
else {
this._upgrading = false;
this._upgraded = true;
}
}).catch((e) => this.emit('error', e));
}
}
exports.CloudflareSocket = CloudflareSocket;
const debug = false;
function dump(data) {
if (data instanceof Uint8Array || data instanceof ArrayBuffer) {
const hex = Buffer.from(data).toString('hex');
const str = new TextDecoder().decode(data);
return `\n>>> STR: "${str.replace(/\n/g, '\\n')}"\n>>> HEX: ${hex}\n`;
}
else {
return data;
}
}
function log(...args) {
debug && console.log(...args.map(dump));
}
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