1 files changed, 0 insertions, 97 deletions
diff --git a/fg21sim/webui/utils.py b/fg21sim/webui/utils.py
index 4d84c95..6ae81e9 100644
--- a/fg21sim/webui/utils.py
+++ b/fg21sim/webui/utils.py
@@ -5,112 +5,15 @@
 Utilities for the Web UI
 ------------------------
 
-get_host_ip :
-    Get the IP address of the host extracted from the input URL.
-
-get_local_ip :
-    Get the local IP address of this machine.
-
-ip_in_network :
-    Whether the IP address is contained in the network?
-
 gen_cookie_secret :
     Generate the secret key for cookie signing from the local hostname.
 """
 
 
-import ipaddress
 import socket
-from urllib.parse import urlparse
 import base64
 
 
-def get_host_ip(url):
-    """
-    This function parses the input URL to get the hostname (or an IP),
-    then the hostname is further resolved to its IP address.
-
-    Parameters
-    ----------
-    url : str
-        An URL string, which generally has the following format:
-        ``scheme://netloc/path;parameters?query#fragment``
-        while the ``netloc`` may look like ``user:pass@example.com:port``
-
-    Returns
-    -------
-    ip : str
-        An IPv4 address string.
-        If something wrong happens (e.g., ``gaierror``), then ``None``
-        is returned.
-    """
-    netloc = urlparse(url).netloc
-    hostname = netloc.split("@")[-1].split(":")[0]
-    try:
-        ip = socket.gethostbyname(hostname)
-    except socket.gaierror:
-        ip = None
-    return ip
-
-
-def get_local_ip(host="localhost", timeout=3.0):
-    """
-    Get the local IP address of this machine where this script runs.
-
-    A dummy socket will be created and connects to the given host, then
-    the valid local IP address used in this connection can be obtained.
-
-    Parameters
-    ----------
-    host : str
-        The host to which will be connected by a dummy socket, in order
-        to determine the valid IP address.
-    timeout : float
-        Timeout (in seconds) on the blocking socket operations (e.g.,
-        ``connect()``)
-
-    Returns
-    -------
-    ip : str
-        The local IPv4 address of this machine as a string.
-        If something wrong happens (e.g., ``gaierror``), then ``None``
-        is returned.
-    """
-    with socket.socket(socket.AF_INET, socket.SOCK_DGRAM) as s:
-        try:
-            s.settimeout(timeout)
-            # Use 0 as the port will let OS determine the free port
-            s.connect((host, 0))
-            ip = s.getsockname()[0]
-        except (socket.gaierror, socket.timeout):
-            ip = None
-    return ip
-
-
-def ip_in_network(ip, network):
-    """
-    Check whether the IP address is contained in the network?
-
-    Parameters
-    ----------
-    ip : `~ipaddress.IPv4Address`, str
-        An `~ipaddress.IPv4Address` instance or a string of the IPv4 address
-    network : `~ipaddress.IPv4Network`, str
-        An `~ipaddress.IPv4Network` instance or a string of the IPv4 network,
-        which is generally written in the CIDR format.
-
-    Raises
-    ------
-    ValueError :
-        Input IP or network is invalid.
-    """
-    if not isinstance(ip, ipaddress.IPv4Address):
-        ip = ipaddress.IPv4Address(ip)
-    if not isinstance(network, ipaddress.IPv4Network):
-        network = ipaddress.IPv4Network(network)
-    return ip in network
-
-
 def gen_cookie_secret():
     """
     Generate the secret key for cookie signing from the local hostname.