Add cheroot-8.2.1

lib/cheroot/errors.py

@@ -0,0 +1,58 @@
+"""Collection of exceptions raised and/or processed by Cheroot."""
+
+from __future__ import absolute_import, division, print_function
+__metaclass__ = type
+
+import errno
+import sys
+
+
+class MaxSizeExceeded(Exception):
+    """Exception raised when a client sends more data then acceptable within limit.
+
+    Depends on ``request.body.maxbytes`` config option if used within CherryPy
+    """
+
+
+class NoSSLError(Exception):
+    """Exception raised when a client speaks HTTP to an HTTPS socket."""
+
+
+class FatalSSLAlert(Exception):
+    """Exception raised when the SSL implementation signals a fatal alert."""
+
+
+def plat_specific_errors(*errnames):
+    """Return error numbers for all errors in errnames on this platform.
+
+    The 'errno' module contains different global constants depending on
+    the specific platform (OS). This function will return the list of
+    numeric values for a given list of potential names.
+    """
+    missing_attr = set([None, ])
+    unique_nums = set(getattr(errno, k, None) for k in errnames)
+    return list(unique_nums - missing_attr)
+
+
+socket_error_eintr = plat_specific_errors('EINTR', 'WSAEINTR')
+
+socket_errors_to_ignore = plat_specific_errors(
+    'EPIPE',
+    'EBADF', 'WSAEBADF',
+    'ENOTSOCK', 'WSAENOTSOCK',
+    'ETIMEDOUT', 'WSAETIMEDOUT',
+    'ECONNREFUSED', 'WSAECONNREFUSED',
+    'ECONNRESET', 'WSAECONNRESET',
+    'ECONNABORTED', 'WSAECONNABORTED',
+    'ENETRESET', 'WSAENETRESET',
+    'EHOSTDOWN', 'EHOSTUNREACH',
+)
+socket_errors_to_ignore.append('timed out')
+socket_errors_to_ignore.append('The read operation timed out')
+socket_errors_nonblocking = plat_specific_errors(
+    'EAGAIN', 'EWOULDBLOCK', 'WSAEWOULDBLOCK',
+)
+
+if sys.platform == 'darwin':
+    socket_errors_to_ignore.extend(plat_specific_errors('EPROTOTYPE'))
+    socket_errors_nonblocking.extend(plat_specific_errors('EPROTOTYPE'))