Method constructor

lib/internal/http2/core.js:1293–1379

(type, options, socket)

// will be sent to the socket.
class Http2Session extends EventEmitter {
  constructor(type, options, socket) {
    super();

    // No validation is performed on the input parameters because this
    // constructor is not exported directly for users.

    // If the session property already exists on the socket,
    // then it has already been bound to an Http2Session instance
    // and cannot be attached again.
    if (socket[kBoundSession] !== undefined)
      throw new ERR_HTTP2_SOCKET_BOUND();

    socket[kBoundSession] = this;

    if (!socket._handle || !socket._handle.isStreamBase) {
      socket = new JSStreamSocket(socket);
    }
    socket.on('error', socketOnError);
    socket.on('close', socketOnClose);

    this[kState] = {
      destroyCode: NGHTTP2_NO_ERROR,
      flags: SESSION_FLAGS_PENDING,
      goawayCode: null,
      goawayLastStreamID: null,
      streams: new SafeMap(),
      pendingStreams: new SafeSet(),
      pendingAck: 0,
      shutdownWritableCalled: false,
      writeQueueSize: 0,
      originSet: undefined,
    };

    this[kEncrypted] = undefined;
    this[kAlpnProtocol] = undefined;
    this[kType] = type;
    this[kProxySocket] = null;
    this[kSocket] = socket;
    this[kTimeout] = null;
    this[kHandle] = undefined;
    this[kStrictSingleValueFields] =
      options.strictSingleValueFields;

    // Do not use nagle's algorithm
    if (typeof socket.setNoDelay === 'function')
      socket.setNoDelay();

    // Disable TLS renegotiation on the socket
    if (typeof socket.disableRenegotiation === 'function')
      socket.disableRenegotiation();

    const setupFn = setupHandle.bind(this, socket, type, options);
    if (socket.connecting || socket.secureConnecting) {
      const connectEvent =
        socket instanceof tls.TLSSocket ? 'secureConnect' : 'connect';
      socket.once(connectEvent, () => {
        try {
          setupFn();