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 enable_attach(dont_trace_start_patterns, dont_trace_end_patterns):
# 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
if hasattr(enable_attach, "adapter"):
raise AssertionError("enable_attach() can only be called once per process")
server_access_token = compat.force_str(codecs.encode(os.urandom(32), "hex"))
try:
endpoints_listener = sockets.create_server("127.0.0.1", 0, timeout=5)
except Exception as exc:
log.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
)
adapter_args = [
sys.executable,
os.path.dirname(adapter.__file__),
"--for-server",
str(endpoints_port),
"--host",
options.host,
"--port",
str(options.port),
"--server-access-token",
server_access_token,
]
if log.log_dir is not None:
adapter_args += ["--log-dir", log.log_dir]
log.info("enable_attach() 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:
enable_attach.adapter = 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.
enable_attach.adapter.wait()
else:
# Suppress misleading warning about child process still being alive when
# this process exits (https://bugs.python.org/issue38890).
enable_attach.adapter.returncode = 0
pydevd.add_dont_terminate_child_pid(enable_attach.adapter.pid)
except Exception as exc:
log.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.exception("Timed out waiting for adapter to connect:", level="info")
raise RuntimeError("timed out waiting for adapter to connect")
except Exception as exc:
log.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:
host = str(endpoints["server"]["host"])
port = int(endpoints["server"]["port"])
options.port = int(endpoints["ide"]["port"])
except Exception as exc:
log.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 IDE connections on {0}:{1}",
options.host,
options.port,
)
_settrace(
host=host,
port=port,
suspend=False,
patch_multiprocessing=options.multiprocess,
wait_for_ready_to_run=False,
block_until_connected=True,
dont_trace_start_patterns=dont_trace_start_patterns,
dont_trace_end_patterns=dont_trace_end_patterns,
access_token=server_access_token,
client_access_token=options.client_access_token,
)
log.info("pydevd is connected to adapter at {0}:{1}", host, port)
return options.host, options.port
def main(args):
from ptvsd import adapter
from ptvsd.common import compat, log, sockets
from ptvsd.adapter import ide, servers, sessions
if args.for_server is not None:
if os.name == "posix":
# On POSIX, we need to leave the process group and its session, and then
# daemonize properly by double-forking (first fork already happened when
# this process was spawned).
os.setsid()
if os.fork() != 0:
sys.exit(0)
for stdio in sys.stdin, sys.stdout, sys.stderr:
if stdio is not None:
stdio.close()
if args.log_stderr:
log.stderr.levels |= set(log.LEVELS)
if args.log_dir is not None:
log.log_dir = args.log_dir
log.to_file(prefix="ptvsd.adapter")
log.describe_environment("ptvsd.adapter startup environment:")
servers.access_token = args.server_access_token
if args.for_server is None:
adapter.access_token = compat.force_str(
codecs.encode(os.urandom(32), "hex"))
try:
server_host, server_port = servers.listen()
except Exception as exc:
if args.for_server is None:
raise
endpoints = {
"error": "Can't listen for server connections: " + str(exc)
}
else:
endpoints = {"server": {"host": server_host, "port": server_port}}
try:
ide_host, ide_port = ide.listen(port=args.port)
except Exception as exc:
if args.for_server is None:
raise
endpoints = {
"error": "Can't listen for IDE connections: " + str(exc)
}
else:
endpoints["ide"] = {"host": ide_host, "port": ide_port}
if args.for_server is not None:
log.info(
"Sending endpoints info to debug server at localhost:{0}:\n{1!j}",
args.for_server,
endpoints,
)
try:
sock = sockets.create_client()
try:
sock.settimeout(None)
sock.connect(("127.0.0.1", args.for_server))
sock_io = sock.makefile("wb", 0)
try:
sock_io.write(json.dumps(endpoints).encode("utf-8"))
finally:
sock_io.close()
finally:
sockets.close_socket(sock)
except Exception:
raise log.exception(
"Error sending endpoints info to debug server:")
if "error" in endpoints:
log.error("Couldn't set up endpoints; exiting.")
sys.exit(1)
listener_file = os.getenv("PTVSD_ADAPTER_ENDPOINTS")
if listener_file is not None:
log.info("Writing endpoints info to {0!r}:\n{1!j}", listener_file,
endpoints)
def delete_listener_file():
log.info("Listener ports closed; deleting {0!r}", listener_file)
try:
os.remove(listener_file)
except Exception:
log.exception("Failed to delete {0!r}",
listener_file,
level="warning")
try:
with open(listener_file, "w") as f:
atexit.register(delete_listener_file)
print(json.dumps(endpoints), file=f)
except Exception:
raise log.exception("Error writing endpoints info to file:")
if args.port is None:
ide.IDE("stdio")
# These must be registered after the one above, to ensure that the listener sockets
# are closed before the endpoint info file is deleted - this way, another process
# can wait for the file to go away as a signal that the ports are no longer in use.
atexit.register(servers.stop_listening)
atexit.register(ide.stop_listening)
servers.wait_until_disconnected()
log.info(
"All debug servers disconnected; waiting for remaining sessions...")
sessions.wait_until_ended()
log.info("All debug sessions have ended; exiting.")
