Adding example for Get range

ds3/ds3network.py

@@ -207,7 +207,7 @@ def send_request(self, request):
             if key == 'Content-Length':
                 # Add to headers,  but not to amz-headers
                 headers[key] = value
-            elif key in ['Content-CRC32', 'Content-CRC32C', 'Content-MD5', 'Content-SHA256', 'Content-SHA512']:
+            elif key in ['Content-CRC32', 'Content-CRC32C', 'Content-MD5', 'Content-SHA256', 'Content-SHA512','Range','Content-Length','Accept-Ranges','Content-Range']:
                 headers[key] = value
                 checksum = value
             elif not key.startswith('x-amz-meta-'):

samples/getDataRange.py

@@ -0,0 +1,42 @@
+import os
+import tempfile
+
+from ds3 import ds3, ds3Helpers,ds3network
+from ds3.ds3 import *
+import time
+
+
+# This example retrieves specified bytes=53687091100-53687091115 in the file in a specific bucket.
+# The output will be written to tempname file.
+
+
+client = ds3.Client("<host>", ds3.Credentials("<access id", "<secret key>"))
+
+# create a dictionary to map bucket names to object names
+object_dict={}
+helper = ds3Helpers.Helper(client=client)
+
+
+
+file_path = os.path.join(os.path.dirname(str(__file__)),  "<file-name>")
+bucketName = "<bucket-name>"
+fileName = "<file-name>"
+fd, tempname = tempfile.mkstemp()
+print (tempname) 
+f = open(tempname, "wb")
+bucketObjects = client.get_service(ds3.GetServiceRequest())
+print(bucketObjects)
+
+req = ds3.GetObjectRequest(bucketName, fileName, f)
+req.headers['Range'] = 'bytes=53687091100-53687091115'
+start_time = time.time()
+getObjectResult = client.get_object(request= req)
+
+
+f.close()
+os.close(fd)
+
+print(getObjectResult.response.status)
+end_time = time.time()
+elapsed_time_total = end_time - start_time
+print(f"Total elapsed time: {elapsed_time_total} seconds")