Skip to content

check port with bind over connect_ex #5564

New issue

Have a question about this project? Sign up for a free GitHub account to open an issue and contact its maintainers and the community.

Sign up for GitHub

By clicking “Sign up for GitHub”, you agree to our terms of service and privacy statement. We’ll occasionally send you account related emails.

Already on GitHub? Sign in to your account

Merged
adhami3310 merged 4 commits into from
Jul 11, 2025
Merged

check port with bind over connect_ex #5564

Changes from 1 commit
Commits
Show all changes
4 commits
Select commit Hold shift + click to select a range
157651d
check port with bind over connect_ex
adhami3310 Jul 11, 2025
c8e9058
add tests and overflow handling
adhami3310 Jul 11, 2025
c3c60fe
dang it darglint
adhami3310 Jul 11, 2025
c39da8c
that was basically the same test
adhami3310 Jul 11, 2025
File filter

Filter by extension

Filter by extension
Conversations
Failed to load comments.
Loading
Jump to
Jump to file
Failed to load files.
Loading
Diff view
Diff view
11 changes: 7 additions & 4 deletions reflex/utils/processes.py
View file
Open in desktop
Original file line number Diff line number Diff line change
Expand Up @@ -53,7 +53,7 @@ def get_num_workers() -> int:
return (os.cpu_count() or 1) * 2 + 1


def _is_address_responsive(
def _can_bind_at_port(
address_family: socket.AddressFamily | int, address: str, port: int
) -> bool:
"""Check if a given address and port are responsive.
Expand All @@ -68,9 +68,12 @@ def _is_address_responsive(
"""
try:
with closing(socket.socket(address_family, socket.SOCK_STREAM)) as sock:
return sock.connect_ex((address, port)) == 0
sock.bind((address, port))
except PermissionError:
return False
except OSError:
return False
return True


def is_process_on_port(port: int) -> bool:
Expand All @@ -82,9 +85,9 @@ def is_process_on_port(port: int) -> bool:
Returns:
Whether a process is running on the given port.
"""
return _is_address_responsive( # Test IPv4 localhost (127.0.0.1)
return not _can_bind_at_port( # Test IPv4 localhost (127.0.0.1)
socket.AF_INET, "127.0.0.1", port
) or _is_address_responsive(
) or not _can_bind_at_port(
socket.AF_INET6, "::1", port
) # Test IPv6 localhost (::1)

Expand Down