add error handling for port process check (#5540)

Author: adhami3310

reflex/utils/processes.py

@@ -53,6 +53,26 @@ def get_num_workers() -> int:
     return (os.cpu_count() or 1) * 2 + 1
 
 
+def _is_address_responsive(
+    address_family: socket.AddressFamily | int, address: str, port: int
+) -> bool:
+    """Check if a given address and port are responsive.
+
+    Args:
+        address_family: The address family (e.g., socket.AF_INET or socket.AF_INET6).
+        address: The address to check.
+        port: The port to check.
+
+    Returns:
+        Whether the address and port are responsive.
+    """
+    try:
+        with closing(socket.socket(address_family, socket.SOCK_STREAM)) as sock:
+            return sock.connect_ex((address, port)) == 0
+    except OSError:
+        return False
+
+
 def is_process_on_port(port: int) -> bool:
     """Check if a process is running on the given port.
 
@@ -62,16 +82,11 @@ def is_process_on_port(port: int) -> bool:
     Returns:
         Whether a process is running on the given port.
     """
-    # Test IPv4 localhost (127.0.0.1)
-    with closing(socket.socket(socket.AF_INET, socket.SOCK_STREAM)) as sock:
-        ipv4_result = sock.connect_ex(("127.0.0.1", port)) == 0
-
-    # Test IPv6 localhost (::1)
-    with closing(socket.socket(socket.AF_INET6, socket.SOCK_STREAM)) as sock:
-        ipv6_result = sock.connect_ex(("::1", port)) == 0
-
-    # Port is in use if either IPv4 or IPv6 is listening
-    return ipv4_result or ipv6_result
+    return _is_address_responsive(  # Test IPv4 localhost (127.0.0.1)
+        socket.AF_INET, "127.0.0.1", port
+    ) or _is_address_responsive(
+        socket.AF_INET6, "::1", port
+    )  # Test IPv6 localhost (::1)
 
 
 def change_port(port: int, _type: str) -> int: