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fix: ensure loopback addresses are included in available interfaces

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yashksaini-coder
2025-08-18 12:40:38 +05:30
parent a2fcf33bc1
commit 9378490dcb
1 changed files with 11 additions and 1 deletions
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12
libp2p/utils/address_validation.py
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@ -57,13 +57,23 @@ def get_available_interfaces(port: int, protocol: str = "tcp") -> List[Multiaddr
addrs: List[Multiaddr] = [] addrs: List[Multiaddr] = []
# IPv4 enumeration # IPv4 enumeration
seen_v4: set[str] = set()
for ip in _safe_get_network_addrs(4): for ip in _safe_get_network_addrs(4):
seen_v4.add(ip)
addrs.append(Multiaddr(f"/ip4/{ip}/{protocol}/{port}")) addrs.append(Multiaddr(f"/ip4/{ip}/{protocol}/{port}"))
# Ensure loopback IPv4 explicitly present (JS echo parity) even if not returned
if "127.0.0.1" not in seen_v4:
addrs.append(Multiaddr(f"/ip4/127.0.0.1/{protocol}/{port}"))
# IPv6 enumeration (optional: only include if we have at least one global or loopback) # IPv6 enumeration (optional: only include if we have at least one global or loopback)
seen_v6: set[str] = set()
for ip in _safe_get_network_addrs(6): for ip in _safe_get_network_addrs(6):
# Avoid returning unusable wildcard expansions if the environment does not support IPv6 seen_v6.add(ip)
addrs.append(Multiaddr(f"/ip6/{ip}/{protocol}/{port}")) addrs.append(Multiaddr(f"/ip6/{ip}/{protocol}/{port}"))
# Optionally ensure IPv6 loopback when any IPv6 present but loopback missing
if seen_v6 and "::1" not in seen_v6:
addrs.append(Multiaddr(f"/ip6/::1/{protocol}/{port}"))
# Fallback if nothing discovered # Fallback if nothing discovered
if not addrs: if not addrs: