Method reconnect

packages/socket.io-client/lib/manager.ts:576–621

* Attempt a reconnection. * * @private

()

   * @private
   */
  private reconnect(): this | void {
    if (this._reconnecting || this.skipReconnect) return this;

    const self = this;

    if (this.backoff.attempts >= this._reconnectionAttempts) {
      debug(class="st">"reconnect failed");
      this.backoff.reset();
      this.emitReserved(class="st">"reconnect_failed");
      this._reconnecting = false;
    } else {
      const delay = this.backoff.duration();
      debug(class="st">"will wait %dms before reconnect attempt", delay);

      this._reconnecting = true;
      const timer = this.setTimeoutFn(() => {
        if (self.skipReconnect) return;

        debug(class="st">"attempting reconnect");
        this.emitReserved(class="st">"reconnect_attempt", self.backoff.attempts);

        class="cm">// check again for the case socket closed in above events
        if (self.skipReconnect) return;

        self.open((err) => {
          if (err) {
            debug(class="st">"reconnect attempt error");
            self._reconnecting = false;
            self.reconnect();
            this.emitReserved(class="st">"reconnect_error", err);
          } else {
            debug(class="st">"reconnect success");
            self.onreconnect();
          }
        });
      }, delay);

      if (this.opts.autoUnref) {
        timer.unref();
      }

      this.subs.push(() => {
        this.clearTimeoutFn(timer);
      });
    }
  }

  /**
   * Called upon successful reconnect.