Class RetryMiddleware

Middleware that retries requests based on the boolean result of invoking the provided "decider" function.

Namespace: GuzzleHttp
Located at RetryMiddleware.php

Methods summary
`public`	# `__construct( callable $decider, callable $nextHandler, callable $delay = null )` Parameters `$decider` Function that accepts the number of retries, a request, [response], and [exception] and returns true if the request is to be retried. `$nextHandler` Next handler to invoke. `$delay` Function that accepts the number of retries and [response] and returns the number of milliseconds to delay.
`public static integer`	# `exponentialDelay( $retries )` Default exponential backoff delay function. Default exponential backoff delay function. Parameters `$retries` Returns integer
`public GuzzleHttp\Promise\PromiseInterface`	# `__invoke( Psr\Http\Message\RequestInterface $request, array $options )` Parameters `$request` `$options` Returns `GuzzleHttp\Promise\PromiseInterface`