Backport PR #798 on branch 1.x (missing required arguments in utils.fetch) (#799)

Co-authored-by: Min RK <[email protected]>

Author: meeseeksmachine

jupyter_server/serverapp.py

@@ -504,7 +504,7 @@ def shutdown_server(server_info, timeout=5, log=None):
     if log:
         log.debug("POST request to %sapi/shutdown", url)
 
-    fetch(url, method="POST", headers={"Authorization": "token " + server_info["token"]})
+    fetch(url, method="POST", body=b"", headers={"Authorization": "token " + server_info["token"]})
     # Poll to see if it shut down.
     for _ in range(timeout * 10):
         if not check_pid(pid):

jupyter_server/utils.py

@@ -346,7 +346,9 @@ def fetch(urlstring, method="GET", body=None, headers=None):
     Send a HTTP, HTTPS, or HTTP+UNIX request
     to a Tornado Web Server. Returns a tornado HTTPResponse.
     """
-    with _request_for_tornado_client(urlstring) as request:
+    with _request_for_tornado_client(
+        urlstring, method=method, body=body, headers=headers
+    ) as request:
         response = HTTPClient(AsyncHTTPClient).fetch(request)
     return response
 
@@ -356,7 +358,9 @@ async def async_fetch(urlstring, method="GET", body=None, headers=None, io_loop=
     Send an asynchronous HTTP, HTTPS, or HTTP+UNIX request
     to a Tornado Web Server. Returns a tornado HTTPResponse.
     """
-    with _request_for_tornado_client(urlstring) as request:
+    with _request_for_tornado_client(
+        urlstring, method=method, body=body, headers=headers
+    ) as request:
         response = await AsyncHTTPClient(io_loop).fetch(request)
     return response