tor

commit 3beb3dac2db492df1686abd1d2c047d5ee6cddcc
parent f755f9b9e67232d9d39682cbcdf4433ac738e17a
Author: Nick Mathewson <nickm@torproject.org>
Date:   Mon,  6 Nov 2017 09:49:06 -0500

Merge branch 'maint-0.3.2'

Diffstat:
A
changes/bug23318
 | 
7
+++++++
M
src/or/routerlist.c
 | 
2
+-

2 files changed, 8 insertions(+), 1 deletion(-)
diff --git a/changes/bug23318 b/changes/bug23318
@@ -0,0 +1,7 @@
+  o Minor bugfixes (path selection):
+    - When selecting relays by bandwidth, avoid a rounding error that
+      could sometimes cause load to be imbalanced incorrectly. Previously,
+      we would always round upwards; now, we round towards the nearest
+      integer.  This had the biggest effect when a relay's weight adjustments
+      should have given it weight 0, but it got weight 1 instead.
+      Fixes bug 23318; bugfix on 0.2.4.3-alpha.
diff --git a/src/or/routerlist.c b/src/or/routerlist.c
@@ -2706,7 +2706,7 @@ compute_weighted_bandwidths(const smartlist_t *sl,
       final_weight = weight*this_bw;
     }
 
-    bandwidths[node_sl_idx] = final_weight + 0.5;
+    bandwidths[node_sl_idx] = final_weight;
   } SMARTLIST_FOREACH_END(node);
 
   log_debug(LD_CIRC, "Generated weighted bandwidths for rule %s based "