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acd: Work around spurious 403 errors

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Sometimes ACD gives this error on reauthentication

HTTP code 403: "403 Forbidden", reponse body: {"message":"Authorization header requires 'Credential' parameter. Authorization header requires 'Signature' parameter. Authorization header requires 'SignedHeaders' parameter. Authorization header requires existence of either a 'X-Amz-Date' or a 'Date' header. Authorization=Bearer"}

This code retries this error if it is received.
This commit is contained in:
Nick Craig-Wood 2016-05-28 15:45:39 +01:00
parent 0a922ad1dc
commit 085677d511
1 changed files with 13 additions and 4 deletions
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17
amazonclouddrive/amazonclouddrive.go
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@ -142,10 +142,19 @@ var retryErrorCodes = []int{
// shouldRetry returns a boolean as to whether this resp and err
// deserve to be retried. It returns the err as a convenience
func (f *Fs) shouldRetry(resp *http.Response, err error) (bool, error) {
if resp != nil && resp.StatusCode == 401 {
f.ts.Invalidate()
fs.Log(f, "401 error received - invalidating token")
return true, err
if resp != nil {
if resp.StatusCode == 401 {
f.ts.Invalidate()
fs.Log(f, "401 error received - invalidating token")
return true, err
}
// Work around receiving this error sporadically on authentication
//
// HTTP code 403: "403 Forbidden", reponse body: {"message":"Authorization header requires 'Credential' parameter. Authorization header requires 'Signature' parameter. Authorization header requires 'SignedHeaders' parameter. Authorization header requires existence of either a 'X-Amz-Date' or a 'Date' header. Authorization=Bearer"}
if resp.StatusCode == 403 && strings.Contains(err.Error(), "Authorization header requires") {
fs.Log(f, "403 \"Authorization header requires...\" error received - retry")
return true, err
}
}
return fs.ShouldRetry(err) || fs.ShouldRetryHTTP(resp, retryErrorCodes), err
}