add IPv6 support

mcstatus/protocol/connection.py

@@ -1,6 +1,7 @@
 import socket
 import struct
 
+from ..scripts.address_tools import ip_type
 
 class Connection:
     def __init__(self):
@@ -160,7 +161,7 @@ class UDPSocketConnection(Connection):
     def __init__(self, addr, timeout=3):
         Connection.__init__(self)
         self.addr = addr
-        self.socket = socket.socket(socket.AF_INET, socket.SOCK_DGRAM)
+        self.socket = socket.socket(socket.AF_INET if ip_type(addr[0]) == 4 else socket.AF_INET6, socket.SOCK_DGRAM)
         self.socket.settimeout(timeout)
 
     def flush(self):

mcstatus/scripts/address_tools.py

@@ -0,0 +1,50 @@
+import socket
+
+def ip_type(address):
+    try:
+        socket.inet_pton(socket.AF_INET, address)
+    except AttributeError:
+        try:
+            socket.inet_aton(address)
+        except socket.error:
+            return False
+        return 4 if address.count('.') == 3 else None
+    except socket.error:
+        try:
+          socket.inet_pton(socket.AF_INET6, address)
+          return 6
+        except socket.error:
+          return None
+    return 4
+
+def parse_address(address):
+    parts = address.split(":")
+    if len(parts) == 1:
+        return (address, None)
+    elif len(parts) == 2:
+        try:
+            return (parts[0], int(parts[1]))
+        except:
+            raise ValueError("Invalid address '%s'" % address)
+    elif len(parts) < 10:
+        tmp = address
+        port = None
+
+        if len(parts[0]) and len(parts[-2]) and "[" == parts[0][0] and "]" == parts[-2][-1] :
+            if not parts[-1].isdigit():
+                raise ValueError("Invalid address '%s'" % address)
+
+            port = int(parts[-1])
+            parts[0] = parts[0][1:]
+            parts[-2] = parts[-2][:-1]
+            tmp = ':'.join(parts[0:-1])
+
+        if not ip_type(tmp) == 6:
+            raise ValueError("Invalid address '%s'" % address)
+        else:
+            return (tmp, port)
+        parts[0] = parts[0][1:]
+        parts[-2] = parts[0][:-1]
+
+    else:
+        raise ValueError("Invalid address '%s'" % address)

mcstatus/server.py

@@ -1,6 +1,7 @@
 from mcstatus.pinger import ServerPinger
 from mcstatus.protocol.connection import TCPSocketConnection, UDPSocketConnection
 from mcstatus.querier import ServerQuerier
+from mcstatus.scripts.address_tools import parse_address
 import dns.resolver
 
 
@@ -11,14 +12,7 @@ class MinecraftServer:
 
     @staticmethod
     def lookup(address):
-        host = address
+        host, port = parse_address(address)
-        port = None
-        if ":" in address:
-            parts = address.split(":")
-            if len(parts) > 2:
-                raise ValueError("Invalid address '%s'" % address)
-            host = parts[0]
-            port = int(parts[1])
         if port is None:
             port = 25565
             try: