2025-12-25 upload

venv/Lib/site-packages/mitmproxy/net/local_ip.py

@@ -0,0 +1,40 @@
+from __future__ import annotations
+
+import socket
+
+
+def get_local_ip(reachable: str = "8.8.8.8") -> str | None:
+    """
+    Get the default local outgoing IPv4 address without sending any packets.
+    This will fail if the target address is known to be unreachable.
+    We use Google DNS's IPv4 address as the default.
+    """
+    # https://stackoverflow.com/questions/166506/finding-local-ip-addresses-using-pythons-stdlib
+    s = None
+    try:
+        s = socket.socket(socket.AF_INET, socket.SOCK_DGRAM)
+        s.connect((reachable, 80))
+        return s.getsockname()[0]  # pragma: no cover
+    except OSError:
+        return None  # pragma: no cover
+    finally:
+        if s is not None:
+            s.close()
+
+
+def get_local_ip6(reachable: str = "2001:4860:4860::8888") -> str | None:
+    """
+    Get the default local outgoing IPv6 address without sending any packets.
+    This will fail if the target address is known to be unreachable.
+    We use Google DNS's IPv6 address as the default.
+    """
+    s = None
+    try:
+        s = socket.socket(socket.AF_INET6, socket.SOCK_DGRAM)
+        s.connect((reachable, 80))
+        return s.getsockname()[0]  # pragma: no cover
+    except OSError:  # pragma: no cover
+        return None
+    finally:
+        if s is not None:
+            s.close()