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Merge pull request #217 from langflow-ai/tui-bind-fix

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tui ip bind check
This commit is contained in:
Sebastián Estévez 2025-10-07 11:35:31 -04:00 • committed by GitHub
commit 02af923d13
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1 changed files with 28 additions and 3 deletions
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31
src/utils/container_utils.py
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@ -157,10 +157,22 @@ def guess_host_ip_for_containers(logger=None) -> str:
import logging
import re
import shutil
import socket
import subprocess
log = logger or logging.getLogger(__name__)
def can_bind_to_address(ip_addr: str) -> bool:
"""Test if we can bind to the given IP address."""
try:
with socket.socket(socket.AF_INET, socket.SOCK_STREAM) as sock:
sock.setsockopt(socket.SOL_SOCKET, socket.SO_REUSEADDR, 1)
sock.bind((ip_addr, 0)) # Port 0 = let OS choose a free port
return True
except (OSError, socket.error) as e:
log.debug("Cannot bind to %s: %s", ip_addr, e)
return False
def run(cmd, timeout=2, text=True):
return subprocess.run(cmd, capture_output=True, text=text, timeout=timeout)
@ -261,10 +273,23 @@ def guess_host_ip_for_containers(logger=None) -> str:
"Container-reachable host IP candidates: %s",
", ".join(ordered_candidates),
)
else:
log.info("Container-reachable host IP: %s", ordered_candidates[0])
return ordered_candidates[0]
# Try each candidate and return the first one we can bind to
for ip_addr in ordered_candidates:
if can_bind_to_address(ip_addr):
if len(ordered_candidates) > 1:
log.info("Selected bindable host IP: %s", ip_addr)
else:
log.info("Container-reachable host IP: %s", ip_addr)
return ip_addr
log.debug("Skipping %s (cannot bind)", ip_addr)
# None of the candidates were bindable, fall back to 127.0.0.1
log.warning(
"None of the discovered IPs (%s) can be bound; falling back to 127.0.0.1",
", ".join(ordered_candidates),
)
return "127.0.0.1"
log.warning(
"No container bridge IP found. For rootless Podman (slirp4netns) there may be no host bridge; publish ports or use 10.0.2.2 from the container."