disable 'leave before join'

Daniel Gultsch created 

leaving a MUC before joining it was a work around for servers that did not treat a
<x/> join as a full join and didn’t send the full user list if they thought the user was
still in the room.
this happens if Conversations restarts after an inproper disconnect. The MUC will think
the user is still in the room.

however nowadays most modern servers will treat <x/> joins as full joins. on the user hand
leave before join would trigger flood prevention on ejabberds and race the first message
with the actual join (making the message arrive before the user is considered in the room)

Change summary

src/main/java/eu/siacs/conversations/Config.java | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)

Detailed changes

src/main/java/eu/siacs/conversations/Config.java 🔗 

@@ -119,7 +119,7 @@ public final class Config {
     public static final boolean ONLY_INTERNAL_STORAGE = false; //use internal storage instead of sdcard to save attachments
 
     public static final boolean IGNORE_ID_REWRITE_IN_MUC = true;
-    public static final boolean MUC_LEAVE_BEFORE_JOIN = true;
+    public static final boolean MUC_LEAVE_BEFORE_JOIN = false;
 
     public static final boolean USE_LMC_VERSION_1_1 = true;