net-write.js

Socket.prototype._writeGeneric = function(writev, data, encoding, cb) {
  // If we are still connecting, then buffer this for later.
  // The Writable logic will buffer up any more writes while
  // waiting for this one to be done.
  if (this.connecting) {
    this._pendingData = data;
    this._pendingEncoding = encoding;
    this.once('connect', function connect() {
      this._writeGeneric(writev, data, encoding, cb);
    });
    return;
  }
  this._pendingData = null;
  this._pendingEncoding = '';

  this._unrefTimer();

  if (!this._handle) {
    this.destroy(new ERR_SOCKET_CLOSED(), cb);
    return false;
  }

  var req = createWriteWrap(this._handle, afterWrite);
  if (writev)
    writevGeneric(this, req, data, cb);
  else
    writeGeneric(this, req, data, encoding, cb);
  if (req.async)
    this[kLastWriteQueueSize] = req.bytes;
};