gsutil hangs

gsutil use to work fine for us but recently (from 2017-05-09) it is hanging with no error message.

I am trying to copy DART data (TOTAL: 96 objects, (42.6 GiB) ) from google cloud storage to AWS EC2 using gsutil command.

Output of gcloud info
================
Google Cloud SDK [145.0.0]

Platform: [Linux, x86_64]
Python Version: [2.7.5 (default, Nov 6 2016, 00:28:07) [GCC 4.8.5 20150623 (Red Hat 4.8.5-11)]]
Python Location: [/usr/bin/python2]
Site Packages: [Disabled]

Installation Root: [/usr/lib64/google-cloud-sdk]
Installed Components:
core: [2017.02.21]
core-nix: [2017.02.21]
gcloud-deps: [2017.02.21]
gcloud: []
beta: [2017.02.21]
gsutil-nix: [4.22]
gcloud-deps-linux-x86_64: [2017.02.21]
gsutil: [4.22]
bq: [2.0.24]
alpha: [2017.02.21]
bq-nix: [2.0.24]
System PATH: [/usr/local/bin:/usr/bin:/usr/local/sbin:/usr/sbin:/home/centos/.local/bin:/home/centos/bin]
Cloud SDK on PATH: [False]
Kubectl on PATH: [False]

Installation Properties: [/usr/lib64/google-cloud-sdk/properties]
User Config Directory: [/home/centos/.config/gcloud]
Active Configuration Name: [default]
Active Configuration Path: [/home/centos/.config/gcloud/configurations/config_default]

Account: [None]
Project: [None]

Current Properties:
[core]
disable_usage_reporting: [True]

Logs Directory: [/home/centos/.config/gcloud/logs]
Last Log File: [None]