ethers.js: Manage provider timeouts

Hi Richard,

Is it possible to manage timeouts from the provider? I currently use this code to create a “retry provider” for certain status codes. Is it possible to do the same for timeouts?

import { JsonRpcProvider } from "ethers/providers";
import { Networkish } from "ethers/utils";
import { ConnectionInfo, poll } from "ethers/utils/web";

export class RetryProvider extends JsonRpcProvider {
  public attempts: number;

  constructor(
    attempts: number,
    url?: ConnectionInfo | string,
    network?: Networkish
  ) {
    super(url, network);
    this.attempts = attempts;
  }

  public perform(method: string, params: any) {
    let attempts = 0;
    return poll(() => {
      attempts++;
      return super.perform(method, params).then(
        result => {
          return result;
        },
        (error: any) => {
          if (
            (error.statusCode === 429 || error.statusCode > 499) &&
            attempts < this.attempts
          ) {
            return Promise.resolve(undefined);
          } else {
            return Promise.reject(error);
          }
        }
      );
    });
  }
}

We deal with this in particular a fair bit:

2019-12-08 13:03:36 error: Error: timeout at Timeout._onTimeout (/var/app/current/node_modules/ethers/utils/web.js:54:20) at ontimeout (timers.js:436:11) at tryOnTimeout (timers.js:300:5) at listOnTimeout (timers.js:263:5) at Timer.processTimers (timers.js:223:10)