BUG/MINOR: only auto-prefer last server if lb-alg is non-deterministic
While "option prefer-last-server" only applies to non-deterministic load
balancing algorithms, 401/407 responses actually caused haproxy to prefer
the last server unconditionally.
As this breaks deterministic load balancing algorithms like uri, this
patch applies the same condition here.
Should be backported to 1.8 (together with "BUG/MINOR: only mark
connections private if NTLM is detected").
diff --git a/src/proto_http.c b/src/proto_http.c
index 980525d..48cb383 100644
--- a/src/proto_http.c
+++ b/src/proto_http.c
@@ -3712,7 +3712,8 @@
* server over the same connection. This is required by some
* broken protocols such as NTLM, and anyway whenever there is
* an opportunity for sending the challenge to the proper place,
- * it's better to do it (at least it helps with debugging).
+ * it's better to do it (at least it helps with debugging), at
+ * least for non-deterministic load balancing algorithms.
*/
s->txn->flags |= TX_PREFER_LAST;
}