def _tcp_sock_from_meta(self, meta):
assert meta.host
if meta.ia is None:
meta.ia = self.addr.isd_as
if meta.path is None:
meta.path = SCIONPath()
dst = meta.get_addr()
first_ip, first_port = self._get_first_hop(meta.path, dst)
active = True
try:
# Create low-level TCP socket and connect
sock = SCIONTCPSocket()
sock.bind((self.addr, 0))
sock.connect(dst,
meta.port,
meta.path,
first_ip,
first_port,
flags=meta.flags)
except SCIONTCPError:
log_exception(
"TCP: connection init error, marking socket inactive")
sock = None
active = False
# Create and return TCPSocketWrapper
return TCPSocketWrapper(sock, dst, meta.path, active)
def _tcp_accept_loop(self):
while self.run_flag.is_set():
try:
logging.debug("TCP: waiting for connections")
self._tcp_conns_put(TCPSocketWrapper(*self._tcp_sock.accept()))
logging.debug("TCP: accepted connection")
except SCIONTCPTimeout:
pass
except SCIONTCPError:
log_exception("TCP: error on accept()")
logging.error("TCP: leaving the accept loop")
break
try:
self._tcp_sock.close()
except SCIONTCPError:
log_exception("TCP: error on closing _tcp_sock")