1.0.0+kodimov.13: updates don't stop live TV; IPTV Simple restarts only when idle

- After an add-on update the new service found port 57031 still held by the
  old proxy for a moment and moved to a random port; the stream playing kept
  asking 57031 for its manifest and died a minute later (.49, 2026-11-13).
  The proxy now waits up to 10 s for the port, and SO_REUSEADDR /
  allow_reuse_address are set before binding (upstream set them after, so
  they did nothing).
- IPTV Simple is restarted only when nothing plays and no key was pressed
  for 30 s: on .49 a channel opened during a restart failed with an error.
- After start or update, changed instance files (duplicate removed, refresh
  timer) are picked up by the guide reload instead of a restart of their
  own; the service restarts IPTV Simple itself only if that reload didn't
  happen within 10 minutes. 3 restarts after kodimov.12 -> 2.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

resources/lib/proxy.py

@@ -274,6 +274,10 @@ PORT = 57031
 
 class ThreadedHTTPServer(ThreadingMixIn, HTTPServer):
     daemon_threads = True
+    # KodiMov+: must be set before the server binds (setting it on the
+    # instance afterwards did nothing): connections of the previous proxy
+    # left in TIME_WAIT would otherwise keep the port taken
+    allow_reuse_address = True
 
 class Proxy(object):
     started = False
@@ -281,8 +285,8 @@ class Proxy(object):
     def check_port(self, port=0, default=False):
       try:
         with closing(socket.socket(socket.AF_INET, socket.SOCK_STREAM)) as s:
-          s.bind((HOST, port))
           s.setsockopt(socket.SOL_SOCKET, socket.SO_REUSEADDR, 1)
+          s.bind((HOST, port))
           return s.getsockname()[1]
       except:
         return default
@@ -292,6 +296,14 @@ class Proxy(object):
             return
 
         port = self.check_port(PORT)
+        # KodiMov+: when the add-on updates, the previous service may still
+        # hold the port for a few seconds. Wait for it: a stream that is
+        # playing keeps asking this port for its manifest, and dies if the
+        # proxy moves to another one.
+        for _ in range(20):
+          if port: break
+          time.sleep(0.5)
+          port = self.check_port(PORT)
         if not port:
           port = self.check_port(0)
         LOG('port: {}'.format(port))