Use a free port instead of using 2500 fixed

This allow have more than one instance running at the same time
and improve reliability, if for any reason the port is in use.

Signed-off-by: Gonzalo Odiard <gonzalo@laptop.org>

1 files changed, 10 insertions, 1 deletions

diff --git a/activity.py b/activity.py
index 0416b35..dd19b64 100644
--- a/activity.py
+++ b/activity.py
@@ -26,6 +26,7 @@ import telepathy
 import dbus
 import os.path
 import json
+import socket
 
 from sugar3.activity import activity
 from sugar3.activity.widgets import ActivityToolbarButton
@@ -64,8 +65,16 @@ class JournalShare(activity.Activity):
         self._jm = JournalManager(self._activity_root)
 
         self.server_proc = None
-        self.port = 2500
+
         if not self.shared_activity:
+            # Get a free socket
+            sock = socket.socket(socket.AF_INET, socket.SOCK_STREAM, 0)
+            sock.bind(('', 0))
+            sock.listen(socket.SOMAXCONN)
+            _ipaddr, self.port = sock.getsockname()
+            sock.shutdown(socket.SHUT_RDWR)
+            logging.error('Using port %d', self.port)
+
             #TODO: check available port
             server.run_server(self._activity_path, self._activity_root,
                               self._jm, self.port)