def connect_socket(self, host, port):
try:
addr_info = io.AddrInfo(host, family=self.family)
except Exception:
raise NSPRError(error_code=error.PR_ADDRESS_NOT_SUPPORTED_ERROR,
error_message="Cannot resolve %s using family %s" %
(host, io.addr_family_name(self.family)))
for net_addr in addr_info:
root_logger.debug("Connecting: %s", net_addr)
net_addr.port = port
self.family = net_addr.family
try:
self._create_socket()
self.sock.connect(net_addr)
return
except Exception as e:
root_logger.debug("Could not connect socket to %s, error: %s",
net_addr, str(e))
root_logger.debug("Try to continue with next family...")
continue
raise NSPRError(
error_code=error.PR_ADDRESS_NOT_SUPPORTED_ERROR,
error_message="Could not connect to %s using any address" % host)
class NSSAddressFamilyFallback(object):
def __init__(self, family):
self.sock_family = family
self.family = self._get_nss_family(self.sock_family)
def _get_nss_family(self, sock_family):
"""
Translate a family from python socket module to nss family.
"""
try:
return _af_dict[sock_family]
except KeyError:
raise ValueError('Uknown socket family %d\n', sock_family)
def _create_socket(self):
self.sock = io.Socket(family=self.family)
def connect_socket(self, host, port):
try:
addr_info = io.AddrInfo(host, family=self.family)
except Exception:
raise NSPRError(
error_code=error.PR_ADDRESS_NOT_SUPPORTED_ERROR,
error_message="Cannot resolve %s using family %s" % (host,
io.addr_family_name(self.family)))
for net_addr in addr_info:
root_logger.debug("Connecting: %s", net_addr)
net_addr.port = port
self.family = net_addr.family
try:
self._create_socket()
self.sock.connect(net_addr)
return
except Exception, e:
root_logger.debug("Could not connect socket to %s, error: %s",
net_addr, str(e))
root_logger.debug("Try to continue with next family...")
continue
raise NSPRError(
error_code=error.PR_ADDRESS_NOT_SUPPORTED_ERROR,
error_message="Could not connect to %s using any address" % host)