def send(self, msg):
# TODO: Busy wait will do for initial startup but for dealing with server down in the middle of things
# TODO: then busy wait is probably inappropriate.
while True: # keep going until we break out inside the loop
try:
self.logger.debug('Attempting to connect to ' +
self.serverName + ' server at ' +
str(self.address) + ' port ' +
str(self.port))
conn = hub.connect((self.address, self.port))
self.logger.debug('Connect to ' + self.serverName +
' successful.')
break
except SocketError as serr:
if serr.errno == errno.ECONNREFUSED:
self.logger.debug(
'Connect to ' + self.serverName +
' failed because connection was refused (the server is down). Trying again.'
)
else:
# Not a recognized error. Treat as fatal.
self.logger.debug('Connect to ' + self.serverName +
' gave socket error ' + str(serr.errno))
raise serr
except:
self.logger.exception('Connect to ' + self.serverName +
' threw unknown exception')
raise
conn.sendall(msg)
conn.close()
def _connect_tcp(self, peer_addr, conn_handler, time_out=None,
bind_address=None):
"""Creates a TCP connection to given peer address.
Tries to create a socket for `timeout` number of seconds. If
successful, uses the socket instance to start `client_factory`.
The socket is bound to `bind_address` if specified.
"""
LOG.debug('Connect TCP called for %s:%s' % (peer_addr[0],
peer_addr[1]))
if netaddr.valid_ipv4(peer_addr[0]):
family = socket.AF_INET
else:
family = socket.AF_INET6
with Timeout(time_out, socket.error):
sock = hub.connect(peer_addr, family=family, bind=bind_address)
if sock:
# Connection name for pro-active connection is made up
# of local end address + remote end address
conn_name = ('L: ' + str(sock.getsockname()) + ', R: ' +
str(sock.getpeername()))
self._asso_socket_map[conn_name] = sock
# If connection is established, we call connection handler
# in a new thread.
self._spawn(conn_name, conn_handler, sock)
return sock
def _connect_tcp(self,
peer_addr,
conn_handler,
time_out=None,
bind_address=None):
"""Creates a TCP connection to given peer address.
Tries to create a socket for `timeout` number of seconds. If
successful, uses the socket instance to start `client_factory`.
The socket is bound to `bind_address` if specified.
"""
LOG.debug('Connect TCP called for %s:%s' %
(peer_addr[0], peer_addr[1]))
if netaddr.valid_ipv4(peer_addr[0]):
family = socket.AF_INET
else:
family = socket.AF_INET6
with Timeout(time_out, socket.error):
sock = hub.connect(peer_addr, family=family, bind=bind_address)
if sock:
# Connection name for pro-active connection is made up
# of local end address + remote end address
conn_name = ('L: ' + str(sock.getsockname()) + ', R: ' +
str(sock.getpeername()))
self._asso_socket_map[conn_name] = sock
# If connection is established, we call connection handler
# in a new thread.
self._spawn(conn_name, conn_handler, sock)
return sock
def send(self, msg):
# TODO: Busy wait will do for initial startup but for dealing with server down in the middle of things
# TODO: then busy wait is probably inappropriate.
while True: # keep going until we break out inside the loop
try:
self.logger.debug('Attempting to connect to '+self.serverName+' server at '+str(self.address)+' port '+str(self.port))
conn = hub.connect((self.address, self.port))
self.logger.debug('Connect to '+self.serverName+' successful.')
break
except SocketError as serr:
if serr.errno == errno.ECONNREFUSED:
self.logger.debug('Connect to '+self.serverName+' failed because connection was refused (the server is down). Trying again.')
else:
# Not a recognized error. Treat as fatal.
self.logger.debug('Connect to '+self.serverName+' gave socket error '+str(serr.errno))
raise serr
except:
self.logger.exception('Connect to '+self.serverName+' threw unknown exception')
raise
conn.sendall(msg)
conn.close()
