drop python<3.6 support

Filter all code over `pyupgrade --py36-plus` and update `classifiers`.

setup.py

@@ -14,12 +14,13 @@ setup(name=name,
           "Programming Language :: Python",
           "Programming Language :: Python :: 3",
           "Programming Language :: Python :: 3 :: Only",
-          "Programming Language :: Python :: 3.4",
-          "Programming Language :: Python :: 3.5",
           "Programming Language :: Python :: 3.6",
           "Programming Language :: Python :: 3.7",
           "Programming Language :: Python :: 3.8",
           "Programming Language :: Python :: 3.9",
+          "Programming Language :: Python :: 3.10",
+          "Programming Language :: Python :: 3.11",
+          "Programming Language :: Python :: 3.12",
         ],
       keywords='noVNC websockify',
       license='LGPLv3',

tests/test_websocketproxy.py

@@ -29,7 +29,7 @@ from websockify import token_plugins
 from websockify import auth_plugins
 
 
-class FakeSocket(object):
+class FakeSocket:
     def __init__(self, data=b''):
         self._data = data
 
@@ -47,7 +47,7 @@ class FakeSocket(object):
             return StringIO(self._data.decode('latin_1'))
 
 
-class FakeServer(object):
+class FakeServer:
     class EClose(Exception):
         pass
 
@@ -60,7 +60,7 @@ class FakeServer(object):
 
 class ProxyRequestHandlerTestCase(unittest.TestCase):
     def setUp(self):
-        super(ProxyRequestHandlerTestCase, self).setUp()
+        super().setUp()
         self.handler = websocketproxy.ProxyRequestHandler(
             FakeSocket(), "127.0.0.1", FakeServer())
         self.handler.path = "https://localhost:6080/websockify?token=blah"
@@ -69,7 +69,7 @@ class ProxyRequestHandlerTestCase(unittest.TestCase):
 
     def tearDown(self):
         patch.stopall()
-        super(ProxyRequestHandlerTestCase, self).tearDown()
+        super().tearDown()
 
     def test_get_target(self):
         class TestPlugin(token_plugins.BasePlugin):

tests/test_websockifyserver.py

@@ -39,7 +39,7 @@ def raise_oserror(*args, **kwargs):
     raise OSError('fake error')
 
 
-class FakeSocket(object):
+class FakeSocket:
     def __init__(self, data=b''):
         self._data = data
 
@@ -59,7 +59,7 @@ class FakeSocket(object):
 
 class WebSockifyRequestHandlerTestCase(unittest.TestCase):
     def setUp(self):
-        super(WebSockifyRequestHandlerTestCase, self).setUp()
+        super().setUp()
         self.tmpdir = tempfile.mkdtemp('-websockify-tests')
         # Mock this out cause it screws tests up
         patch('os.chdir').start()
@@ -68,7 +68,7 @@ class WebSockifyRequestHandlerTestCase(unittest.TestCase):
         """Called automatically after each test."""
         patch.stopall()
         os.rmdir(self.tmpdir)
-        super(WebSockifyRequestHandlerTestCase, self).tearDown()
+        super().tearDown()
 
     def _get_server(self, handler_class=websockifyserver.WebSockifyRequestHandler,
                     **kwargs):
@@ -101,7 +101,7 @@ class WebSockifyRequestHandlerTestCase(unittest.TestCase):
 
 class WebSockifyServerTestCase(unittest.TestCase):
     def setUp(self):
-        super(WebSockifyServerTestCase, self).setUp()
+        super().setUp()
         self.tmpdir = tempfile.mkdtemp('-websockify-tests')
         # Mock this out cause it screws tests up
         patch('os.chdir').start()
@@ -110,7 +110,7 @@ class WebSockifyServerTestCase(unittest.TestCase):
         """Called automatically after each test."""
         patch.stopall()
         os.rmdir(self.tmpdir)
-        super(WebSockifyServerTestCase, self).tearDown()
+        super().tearDown()
 
     def _get_server(self, handler_class=websockifyserver.WebSockifyRequestHandler,
                     **kwargs):
@@ -181,7 +181,7 @@ class WebSockifyServerTestCase(unittest.TestCase):
             sock, '127.0.0.1')
 
     def test_do_handshake_no_ssl(self):
-        class FakeHandler(object):
+        class FakeHandler:
             CALLED = False
             def __init__(self, *args, **kwargs):
                 type(self).CALLED = True
@@ -256,7 +256,7 @@ class WebSockifyServerTestCase(unittest.TestCase):
     def test_do_handshake_ssl_sets_ciphers(self):
         test_ciphers = 'TEST-CIPHERS-1:TEST-CIPHER-2'
 
-        class FakeHandler(object):
+        class FakeHandler:
             def __init__(self, *args, **kwargs):
                 pass
 
@@ -291,7 +291,7 @@ class WebSockifyServerTestCase(unittest.TestCase):
     def test_do_handshake_ssl_sets_opions(self):
         test_options = 0xCAFEBEEF
 
-        class FakeHandler(object):
+        class FakeHandler:
             def __init__(self, *args, **kwargs):
                 pass
 
@@ -302,7 +302,7 @@ class WebSockifyServerTestCase(unittest.TestCase):
         def fake_select(rlist, wlist, xlist, timeout=None):
             return ([sock], [], [])
 
-        class fake_create_default_context(object):
+        class fake_create_default_context:
             OPTIONS = 0
             def __init__(self, purpose):
                 self.verify_mode = None

websockify/sysloghandler.py

@@ -102,7 +102,7 @@ class WebsockifySysLogHandler(handlers.SysLogHandler):
             if self.unixsocket:
                 try:
                     self.socket.send(msg)
-                except socket.error:
+                except OSError:
                     self._connect_unixsocket(self.address)
                     self.socket.send(msg)
 

websockify/token_plugins.py

@@ -37,7 +37,7 @@ class ReadOnlyTokenFile(BasePlugin):
             for line in [l.strip() for l in open(f).readlines()]:
                 if line and not line.startswith('#'):
                     try:
-                        tok, target = re.split(':\s', line)
+                        tok, target = re.split(r':\s', line)
                         self._targets[tok] = target.strip().rsplit(':', 1)
                     except ValueError:
                         logger.error("Syntax error in %s on line %d" % (self.source, index))

websockify/websocket.py

@@ -36,7 +36,7 @@ class WebSocketWantReadError(ssl.SSLWantReadError):
 class WebSocketWantWriteError(ssl.SSLWantWriteError):
     pass
 
-class WebSocket(object):
+class WebSocket:
     """WebSocket protocol socket like class.
 
     This provides access to the WebSocket protocol by behaving much

websockify/websocketproxy.py

@@ -198,7 +198,7 @@ Traffic Legend:
             if cqueue or c_pend: wlist.append(self.request)
             try:
                 ins, outs, excepts = select.select(rlist, wlist, [], 1)
-            except (select.error, OSError):
+            except OSError:
                 exc = sys.exc_info()[1]
                 if hasattr(exc, 'errno'):
                     err = exc.errno

websockify/websockifyserver.py

@@ -187,11 +187,11 @@ class WebSockifyRequestHandler(WebSocketRequestHandlerMixIn, SimpleHTTPRequestHa
         """ Send a WebSocket orderly close frame. """
         self.request.shutdown(socket.SHUT_RDWR, code, reason)
 
-    def send_pong(self, data=''.encode('ascii')):
+    def send_pong(self, data=b''):
         """ Send a WebSocket pong frame. """
         self.request.pong(data)
 
-    def send_ping(self, data=''.encode('ascii')):
+    def send_ping(self, data=b''):
         """ Send a WebSocket ping frame. """
         self.request.ping(data)