SSL: avoid calling SSL_shutdown() during handshake (ticket #901).
This fixes "called a function you should not call" and
"shutdown while in init" errors as observed with OpenSSL 1.0.2f
due to changes in how OpenSSL handles SSL_shutdown() during
SSL handshakes.
diff --git a/src/event/ngx_event_openssl.c b/src/event/ngx_event_openssl.c
index 1ca1945..de10d48 100644
--- a/src/event/ngx_event_openssl.c
+++ b/src/event/ngx_event_openssl.c
@@ -1767,6 +1767,19 @@
int n, sslerr, mode;
ngx_err_t err;
+ if (SSL_in_init(c->ssl->connection)) {
+ /*
+ * OpenSSL 1.0.2f complains if SSL_shutdown() is called during
+ * an SSL handshake, while previous versions always return 0.
+ * Avoid calling SSL_shutdown() if handshake wasn't completed.
+ */
+
+ SSL_free(c->ssl->connection);
+ c->ssl = NULL;
+
+ return NGX_OK;
+ }
+
if (c->timedout) {
mode = SSL_RECEIVED_SHUTDOWN|SSL_SENT_SHUTDOWN;
SSL_set_quiet_shutdown(c->ssl->connection, 1);
