api: Failed call retry with region only when http.StatusBadRequest.

Fixes https://github.com/minio/minio-go/issues/677

vendor/src/github.com/minio/minio-go/api-put-bucket.go

@@ -89,7 +89,7 @@ func (c Client) MakeBucket(bucketName string, location string) (err error) {
 		if resp.StatusCode != http.StatusOK {
 			err := httpRespToErrorResponse(resp, bucketName, "")
 			errResp := ToErrorResponse(err)
-			if errResp.Code == "InvalidRegion" && errResp.Region != "" {
+			if resp.StatusCode == http.StatusBadRequest && errResp.Region != "" {
 				// Fetch bucket region found in headers
 				// of S3 error response, attempt bucket
 				// create again.

vendor/src/github.com/minio/minio-go/api-put-object-common.go

@@ -157,11 +157,13 @@ func hashCopyN(hashAlgorithms map[string]hash.Hash, hashSums map[string][]byte,
 			return 0, err
 		}
 	}
-
+	if err == nil && size == partSize {
 		for k, v := range hashAlgorithms {
 			hashSums[k] = v.Sum(nil)
 		}
-	return size, err
+		return size, nil
+	}
+	return 0, ErrUnexpectedEOF(size, partSize, "", "")
 }
 
 // getUploadID - fetch upload id if already present for an object name

vendor/src/github.com/minio/minio-go/api.go

@@ -553,7 +553,7 @@ func (c Client) executeMethod(method string, metadata requestMetadata) (res *htt
 		// Bucket region if set in error response and the error
 		// code dictates invalid region, we can retry the request
 		// with the new region.
-		if errResponse.Code == "InvalidRegion" && errResponse.Region != "" {
+		if res.StatusCode == http.StatusBadRequest && errResponse.Region != "" {
 			c.bucketLocCache.Set(metadata.bucketName, errResponse.Region)
 			continue // Retry.
 		}