Added support for headers to avoid HTTP error 403 (#32)

* Added support for headers to avoid HTTP error 403

Signed-off-by: Savitoj Singh <savsingh@redhat.com>

* Dynamic dist version in headers - #32

Signed-off-by: Savitoj Singh <savsingh@redhat.com>

Co-authored-by: Savitoj Singh <savsingh@redhat.com>

Author: savitojs

linkstatus/linkstatus.py

@@ -3,6 +3,7 @@
 from shutil import get_terminal_size
 
 import click
+import pkg_resources
 import requests
 
 from linkstatus.parser import link_validator
@@ -20,11 +21,13 @@ def link_status(link, timeout=5):
     Returns:
         tuple of status (bool) and status code
     """
-
+    headers = {
+        "User-Agent": "linkstatus/{}".format(pkg_resources.get_distribution("linkstatus").version)
+    }
     try:
-        status_code = requests.get(link, timeout=timeout).status_code
+        status_code = requests.get(link, headers=headers, timeout=timeout).status_code
     except requests.exceptions.SSLError:
-        status_code = requests.get(link, verify=False, timeout=timeout).status_code
+        status_code = requests.get(link, verify=False, headers=headers, timeout=timeout).status_code
     except Exception:  # noqa
         # TODO: include exception in logging
         status_code = None