Option 'host_is_server' not work

Because taken from conn_params, but must of conn_params ['OPTIONS']

Author: kwist-sgr

sql_server/pyodbc/base.py

@@ -201,7 +201,7 @@ def get_new_connection(self, conn_params):
             # Only append DRIVER if DATABASE_ODBC_DSN hasn't been set
             cstr_parts.append('DRIVER={%s}' % driver)
             if ms_drivers.match(driver) or driver == 'FreeTDS' and \
-                conn_params.get('host_is_server', False):
+                options.get('host_is_server', False):
                 if port:
                     host += ';PORT=%s' % port
                 cstr_parts.append('SERVER=%s' % host)