server: avoid overflowing the failure counter

grobian · Dec 10, 2016 · 5b1e04d · 5b1e04d
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diff --git a/ChangeLog.md b/ChangeLog.md
@@ -9,6 +9,10 @@
 			 [Pull #127](https://github.com/grobian/carbon-c-relay/issues/127),
 			 [Pull #87](https://github.com/grobian/carbon-c-relay/issues/87).
 
+### Bugfixes
+
+* **server** connection errors are no longer endlessly repeated
+
 # 2.3 (2016-11-07)
 
 ### Bugfixes

diff --git a/server.c b/server.c
@@ -224,6 +224,9 @@ server_queuereader(void *d)
 			if (__sync_bool_compare_and_swap(&(self->keep_running), 0, 0))
 				break;
 			usleep((200 + (rand() % 100)) * 1000);  /* 200ms - 300ms */
+			/* avoid overflowing */
+			if (__sync_add_and_fetch(&(self->failure), 0) > FAIL_WAIT_TIME)
+				__sync_sub_and_fetch(&(self->failure), 1);
 		}
 
 		/* at this point we've got work to do, if we're instructed to