def test_reuse_same_address_port(self):
# NOTE: This test should ensure that same address port can be used by two
# sockets. This to prevent accidental changes to socket options. In Windows
# SO_REUSEADDR flag allows two sockets to bind to same address:port combination.
# Windows should always use SO_EXCLUSIVEADDRUSE
sock1 = sockets.create_server(self.HOST1, 0)
try:
_, PORT1 = sock1.getsockname()
with pytest.raises(Exception):
sockets.create_server(self.HOST1, PORT1)
finally:
sockets.close_socket(sock1)
def test_reuse_same_port(self):
try:
sock1, sock2 = None, None
sock1 = sockets.create_server(self.HOST1, 0)
_, PORT1 = sock1.getsockname()
sock2 = sockets.create_server(self.HOST2, PORT1)
assert sock1.getsockname() == (self.HOST1, PORT1)
assert sock2.getsockname() == (self.HOST2, PORT1)
except Exception:
pytest.fail()
finally:
if sock1 is not None:
sockets.close_socket(sock1)
if sock2 is not None:
sockets.close_socket(sock2)
def listen(self):
self._server_socket = sockets.create_server("127.0.0.1", 0,
self.TIMEOUT)
_, self.port = self._server_socket.getsockname()
self._server_socket.listen(0)
def accept_worker():
log.info(
"Listening for incoming connection from {0} on port {1}...",
self,
self.port,
)
server_socket = self._server_socket
if server_socket is None:
return # concurrent close()
try:
sock, _ = server_socket.accept()
except socket.timeout:
if self._server_socket is None:
return
else:
log.reraise_exception(
"Timed out waiting for {0} to connect", self)
except Exception:
if self._server_socket is None:
return
else:
log.reraise_exception(
"Error accepting connection for {0}:", self)
sock.setsockopt(socket.IPPROTO_TCP, socket.TCP_NODELAY, 1)
log.info("Incoming connection from {0} accepted.", self)
self._socket = sock
self._setup_stream()
accept_thread = threading.Thread(target=accept_worker,
name=fmt("{0} listener", self))
accept_thread.daemon = True
accept_thread.start()
def listen(address, settrace_kwargs):
# Errors below are logged with level="info", because the caller might be catching
# and handling exceptions, and we don't want to spam their stderr unnecessarily.
import subprocess
server_access_token = compat.force_str(codecs.encode(os.urandom(32), "hex"))
try:
endpoints_listener = sockets.create_server("127.0.0.1", 0, timeout=10)
except Exception as exc:
log.swallow_exception("Can't listen for adapter endpoints:")
raise RuntimeError("can't listen for adapter endpoints: " + str(exc))
endpoints_host, endpoints_port = endpoints_listener.getsockname()
log.info(
"Waiting for adapter endpoints on {0}:{1}...", endpoints_host, endpoints_port
)
host, port = address
adapter_args = [
sys.executable,
os.path.dirname(adapter.__file__),
"--for-server",
str(endpoints_port),
"--host",
host,
"--port",
str(port),
"--server-access-token",
server_access_token,
]
if log.log_dir is not None:
adapter_args += ["--log-dir", log.log_dir]
log.info("debugpy.listen() spawning adapter: {0!j}", adapter_args)
# On Windows, detach the adapter from our console, if any, so that it doesn't
# receive Ctrl+C from it, and doesn't keep it open once we exit.
creationflags = 0
if sys.platform == "win32":
creationflags |= 0x08000000 # CREATE_NO_WINDOW
creationflags |= 0x00000200 # CREATE_NEW_PROCESS_GROUP
# Adapter will outlive this process, so we shouldn't wait for it. However, we
# need to ensure that the Popen instance for it doesn't get garbage-collected
# by holding a reference to it in a non-local variable, to avoid triggering
# https://bugs.python.org/issue37380.
try:
global _adapter_process
_adapter_process = subprocess.Popen(
adapter_args, close_fds=True, creationflags=creationflags
)
if os.name == "posix":
# It's going to fork again to daemonize, so we need to wait on it to
# clean it up properly.
_adapter_process.wait()
else:
# Suppress misleading warning about child process still being alive when
# this process exits (https://bugs.python.org/issue38890).
_adapter_process.returncode = 0
pydevd.add_dont_terminate_child_pid(_adapter_process.pid)
except Exception as exc:
log.swallow_exception("Error spawning debug adapter:", level="info")
raise RuntimeError("error spawning debug adapter: " + str(exc))
try:
sock, _ = endpoints_listener.accept()
try:
sock.settimeout(None)
sock_io = sock.makefile("rb", 0)
try:
endpoints = json.loads(sock_io.read().decode("utf-8"))
finally:
sock_io.close()
finally:
sockets.close_socket(sock)
except socket.timeout:
log.swallow_exception("Timed out waiting for adapter to connect:", level="info")
raise RuntimeError("timed out waiting for adapter to connect")
except Exception as exc:
log.swallow_exception("Error retrieving adapter endpoints:", level="info")
raise RuntimeError("error retrieving adapter endpoints: " + str(exc))
log.info("Endpoints received from adapter: {0!j}", endpoints)
if "error" in endpoints:
raise RuntimeError(str(endpoints["error"]))
try:
server_host = str(endpoints["server"]["host"])
server_port = int(endpoints["server"]["port"])
client_host = str(endpoints["client"]["host"])
client_port = int(endpoints["client"]["port"])
except Exception as exc:
log.swallow_exception(
"Error parsing adapter endpoints:\n{0!j}\n", endpoints, level="info"
)
raise RuntimeError("error parsing adapter endpoints: " + str(exc))
log.info(
"Adapter is accepting incoming client connections on {0}:{1}",
client_host,
client_port,
)
_settrace(
host=server_host,
port=server_port,
wait_for_ready_to_run=False,
block_until_connected=True,
access_token=server_access_token,
**settrace_kwargs
)
log.info("pydevd is connected to adapter at {0}:{1}", server_host, server_port)
return client_host, client_port
