in client.go [417:427]
func NewClient() *Client {
return &Client{
HTTPClient: cleanhttp.DefaultPooledClient(),
Logger: defaultLogger,
RetryWaitMin: defaultRetryWaitMin,
RetryWaitMax: defaultRetryWaitMax,
RetryMax: defaultRetryMax,
CheckRetry: DefaultRetryPolicy,
Backoff: DefaultBackoff,
}
}