Improved HttpProxy validation routine

Validation routine for HttpProxy updated to use the newly introduced isSocketAddress() function

src/conf.py

@@ -35,6 +35,7 @@ import socket
 
 from . import ircutils, registry, utils
 from .utils import minisix
+from .utils.net import isSocketAddress
 from .version import version
 from .i18n import PluginInternationalization
 _ = PluginInternationalization()
@@ -1179,17 +1180,13 @@ class HttpProxy(registry.String):
     def setValue(self, v):
         proxies = {}
         if v != "":
-            # TODO: improve checks
+            if isSocketAddress(v):
-            if ':' not in v:
-                self.error()
-            try:
-                int(v.rsplit(':', 1)[1])
-            except ValueError:
-                self.error()
                 proxies = {
                     'http': v,
                     'https': v
                     }
+            else:
+                self.error()
         proxyHandler = ProxyHandler(proxies)
         proxyOpenerDirector = build_opener(proxyHandler)
         install_opener(proxyOpenerDirector)