Update dependencies

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

@@ -87,7 +87,7 @@ type Client struct {
 // Global constants.
 const (
 	libraryName    = "minio-go"
-	libraryVersion = "3.0.0"
+	libraryVersion = "3.0.3"
 )
 
 // User Agent should always following the below style.
@@ -190,6 +190,31 @@ func redirectHeaders(req *http.Request, via []*http.Request) error {
 	return nil
 }
 
+// getRegionFromURL - parse region from URL if present.
+func getRegionFromURL(u url.URL) (region string) {
+	region = ""
+	if s3utils.IsGoogleEndpoint(u) {
+		return
+	} else if s3utils.IsAmazonChinaEndpoint(u) {
+		// For china specifically we need to set everything to
+		// cn-north-1 for now, there is no easier way until AWS S3
+		// provides a cleaner compatible API across "us-east-1" and
+		// China region.
+		return "cn-north-1"
+	} else if s3utils.IsAmazonGovCloudEndpoint(u) {
+		// For us-gov specifically we need to set everything to
+		// us-gov-west-1 for now, there is no easier way until AWS S3
+		// provides a cleaner compatible API across "us-east-1" and
+		// Gov cloud region.
+		return "us-gov-west-1"
+	}
+	parts := s3utils.AmazonS3Host.FindStringSubmatch(u.Host)
+	if len(parts) > 1 {
+		region = parts[1]
+	}
+	return region
+}
+
 func privateNew(endpoint string, creds *credentials.Credentials, secure bool, region string) (*Client, error) {
 	// construct endpoint.
 	endpointURL, err := getEndpointURL(endpoint, secure)
@@ -211,11 +236,14 @@ func privateNew(endpoint string, creds *credentials.Credentials, secure bool, re
 
 	// Instantiate http client and bucket location cache.
 	clnt.httpClient = &http.Client{
-		Transport:     http.DefaultTransport,
+		Transport:     defaultMinioTransport,
 		CheckRedirect: redirectHeaders,
 	}
 
 	// Sets custom region, if region is empty bucket location cache is used automatically.
+	if region == "" {
+		region = getRegionFromURL(clnt.endpointURL)
+	}
 	clnt.region = region
 
 	// Instantiate bucket location cache.
@@ -494,7 +522,7 @@ func (c Client) executeMethod(method string, metadata requestMetadata) (res *htt
 	// Blank indentifier is kept here on purpose since 'range' without
 	// blank identifiers is only supported since go1.4
 	// https://golang.org/doc/go1.4#forrange.
-	for _ = range c.newRetryTimer(MaxRetry, DefaultRetryUnit, DefaultRetryCap, MaxJitter, doneCh) {
+	for range c.newRetryTimer(MaxRetry, DefaultRetryUnit, DefaultRetryCap, MaxJitter, doneCh) {
 		// Retry executes the following function body if request has an
 		// error until maxRetries have been exhausted, retry attempts are
 		// performed after waiting for a given period of time in a
@@ -562,9 +590,14 @@ func (c Client) executeMethod(method string, metadata requestMetadata) (res *htt
 		// Additionally we should only retry if bucketLocation and custom
 		// region is empty.
 		if metadata.bucketLocation == "" && c.region == "" {
-			if res.StatusCode == http.StatusBadRequest && errResponse.Region != "" {
-				c.bucketLocCache.Set(metadata.bucketName, errResponse.Region)
-				continue // Retry.
+			if errResponse.Code == "AuthorizationHeaderMalformed" || errResponse.Code == "InvalidRegion" {
+				if metadata.bucketName != "" && errResponse.Region != "" {
+					// Gather Cached location only if bucketName is present.
+					if _, cachedLocationError := c.bucketLocCache.Get(metadata.bucketName); cachedLocationError != false {
+						c.bucketLocCache.Set(metadata.bucketName, errResponse.Region)
+						continue // Retry.
+					}
+				}
 			}
 		}
 
@@ -700,7 +733,10 @@ func (c Client) newRequest(method string, metadata requestMetadata) (req *http.R
 	case signerType.IsV2():
 		// Add signature version '2' authorization header.
 		req = s3signer.SignV2(*req, accessKeyID, secretAccessKey)
-	case signerType.IsStreamingV4() && method == "PUT":
+	case metadata.objectName != "" && method == "PUT" && metadata.customHeader.Get("X-Amz-Copy-Source") == "" && !c.secure:
+		// Streaming signature is used by default for a PUT object request. Additionally we also
+		// look if the initialized client is secure, if yes then we don't need to perform
+		// streaming signature.
 		req = s3signer.StreamingSignV4(req, accessKeyID,
 			secretAccessKey, sessionToken, location, metadata.contentLength, time.Now().UTC())
 	default: