!fixup doc

python3/httplib2/__init__.py

@@ -183,6 +183,20 @@ def _get_end2end_headers(response):
     return [header for header in list(response.keys()) if header not in hopbyhop]
 
 
+def _errno_from_exception(e):
+    # socket.error and common wrap in .args
+    if len(e.args) > 0:
+        return e.args[0].errno if isinstance(e.args[0], socket.error) else e.errno
+
+    # pysocks.ProxyError wraps in .socket_err
+    # https://github.com/httplib2/httplib2/pull/202
+    if hasattr(e, "socket_err"):
+        e_int = e.socket_err
+        return e_int.args[0].errno if isinstance(e_int.args[0], socket.error) else e_int.errno
+
+    return None
+
+
 URI = re.compile(r"^(([^:/?#]+):)?(//([^/?#]*))?([^?#]*)(\?([^#]*))?(#(.*))?")
 
 
@@ -1355,7 +1369,7 @@ def _conn_request(self, conn, request_uri, method, body, headers):
                 conn.close()
                 raise ServerNotFoundError("Unable to find the server at %s" % conn.host)
             except socket.error as e:
-                errno_ = self._errno_from_exception(e)
+                errno_ = _errno_from_exception(e)
                 if errno_ in (errno.ENETUNREACH, errno.EADDRNOTAVAIL) and i < RETRIES:
                     continue  # retry on potentially transient errors
                 raise
@@ -1413,17 +1427,6 @@ def _conn_request(self, conn, request_uri, method, body, headers):
             break
         return (response, content)
 
-    @staticmethod
-    def _errno_from_exception(e):
-        if len(e.args) > 0:
-            return e.args[0].errno if isinstance(e.args[0], socket.error) else e.errno
-
-        if hasattr(e, 'socket_err'):
-            e_int = e.socket_err
-            return e_int.args[0].errno if isinstance(e_int.args[0], socket.error) else e_int.errno
-
-        return None
-
     def _request(
         self, conn, host, absolute_uri, request_uri, method, body, headers, redirections, cachekey,
     ):