Implement relay-independent join

modules/chankeep.py

@@ -111,6 +111,17 @@ def keepChannels(net, listinfo, mean, sigrelay, relay):
         populateChans(net, siglist, sigrelay, newNums)
     notifyJoin(net)
 
+def joinSingle(net, channel):
+    if allRelaysActive(net):
+        chanfree = getChanFree(net, [])
+        print("chanfree", chanfree)
+        for i in chanfree[0]:
+            if chanfree[0][i] < 0:
+                print("JOIN CHAN")
+    else:
+        error("All relays for %s are not active" % net)
+        return False
+
 def nukeNetwork(net):
     #purgeRecords(net)
     #p = main.g.pipeline()