def perform(self, achalls): # pylint: disable=missing-docstring
if any(util.already_listening(port) for port in
(self.config.dvsni_port, self.config.simple_http_port)):
raise errors.MisconfigurationError(
"At least one of the (possibly) required ports is "
"already taken.")
try:
return self.perform2(achalls)
except errors.StandaloneBindError as error:
display = zope.component.getUtility(interfaces.IDisplay)
if error.socket_error.errno == socket.errno.EACCES:
display.notification(
"Could not bind TCP port {0} because you don't have "
"the appropriate permissions (for example, you "
"aren't running this program as "
"root).".format(error.port))
elif error.socket_error.errno == socket.errno.EADDRINUSE:
display.notification(
"Could not bind TCP port {0} because it is already in "
"use by another process on this system (such as a web "
"server). Please stop the program in question and then "
"try again.".format(error.port))
else:
raise # XXX: How to handle unknown errors in binding?
def _call(self, *args, **kwargs):
from letsencrypt.plugins.util import already_listening
return already_listening(*args, **kwargs)
def check_required_ports(self):
"""Check if required ports are available, else raise an Error."""
if any(util.already_listening(port) for port in self._necessary_ports):
raise errors.MisconfigurationError("At least one of the (possibly) required ports is " "already taken.")
