BUG/MEDIUM: compression: release the zlib pools between keep-alive requests
There was a possible memory leak in the zlib code when the first response of
a keep-alive session was compressed, because the next request would reset the
compression algo, preventing a later call to session_free() from releasing it.
The reason is that it is necessary to release the assigned resources in
http_end_txn_clean_session().
diff --git a/src/proto_http.c b/src/proto_http.c
index 1836405..b2ae01c 100644
--- a/src/proto_http.c
+++ b/src/proto_http.c
@@ -4085,6 +4085,12 @@
s->rep->flags &= ~(CF_SHUTR|CF_SHUTR_NOW|CF_READ_ATTACHED|CF_READ_ERROR|CF_READ_NOEXP|CF_STREAMER|CF_STREAMER_FAST|CF_WRITE_PARTIAL|CF_NEVER_WAIT);
s->flags &= ~(SN_DIRECT|SN_ASSIGNED|SN_ADDR_SET|SN_BE_ASSIGNED|SN_FORCE_PRST|SN_IGNORE_PRST);
s->flags &= ~(SN_CURR_SESS|SN_REDIRECTABLE);
+
+ if (s->flags & SN_COMP_READY)
+ s->comp_algo->end(&s->comp_ctx);
+ s->comp_algo = NULL;
+ s->flags &= ~SN_COMP_READY;
+
s->txn.meth = 0;
http_reset_txn(s);
s->txn.flags |= TX_NOT_FIRST | TX_WAIT_NEXT_RQ;