nstdlib-nightly/lib/internal/tls/secure-pair.mjs

Node.js standard library converted to runtime-agnostic ES modules.

// Source: https://github.com/nodejs/node/blob/65eff1eb/lib/internal/tls/secure-pair.js

import EventEmitter from "nstdlib/lib/events";
import { kEmptyObject } from "nstdlib/lib/internal/util";
import { Duplex } from "nstdlib/lib/stream";
import * as _tls_wrap from "nstdlib/lib/_tls_wrap";
import * as _tls_common from "nstdlib/lib/_tls_common";

const kCallback = Symbol("Callback");
const kOtherSide = Symbol("Other");

class DuplexSocket extends Duplex {
  constructor() {
    super();
    this[kCallback] = null;
    this[kOtherSide] = null;
  }

  _read() {
    const callback = this[kCallback];
    if (callback) {
      this[kCallback] = null;
      callback();
    }
  }

  _write(chunk, encoding, callback) {
    if (chunk.length === 0) {
      process.nextTick(callback);
    } else {
      this[kOtherSide].push(chunk);
      this[kOtherSide][kCallback] = callback;
    }
  }

  _final(callback) {
    this[kOtherSide].on("end", callback);
    this[kOtherSide].push(null);
  }
}

class DuplexPair {
  constructor() {
    this.socket1 = new DuplexSocket();
    this.socket2 = new DuplexSocket();
    this.socket1[kOtherSide] = this.socket2;
    this.socket2[kOtherSide] = this.socket1;
  }
}

class SecurePair extends EventEmitter {
  constructor(
    secureContext = _tls_common.createSecureContext(),
    isServer = false,
    requestCert = !isServer,
    rejectUnauthorized = false,
    options = kEmptyObject,
  ) {
    super();
    const { socket1, socket2 } = new DuplexPair();

    this.server = options.server;
    this.credentials = secureContext;

    this.encrypted = socket1;
    this.cleartext = new _tls_wrap.TLSSocket(socket2, {
      secureContext,
      isServer,
      requestCert,
      rejectUnauthorized,
      ...options,
    });
    this.cleartext.once("secure", () => this.emit("secure"));
  }

  destroy() {
    this.cleartext.destroy();
    this.encrypted.destroy();
  }
}

const _export_createSecurePair_ = function createSecurePair(...args) {
  return Reflect.construct(SecurePair, args);
};
export { _export_createSecurePair_ as createSecurePair };