1 files changed, 23 insertions, 0 deletions
diff --git a/lib/ssluse.c b/lib/ssluse.c
index 503f7efe5..ab177009a 100644
--- a/lib/ssluse.c
+++ b/lib/ssluse.c
@@ -584,6 +584,29 @@ void Curl_ossl_cleanup(void)
 #endif
 }
 
+/*
+ * This function uses SSL_peek to determine connection status.
+ *
+ * Return codes:
+ *     1 means the connection is still in place
+ *     0 means the connection has been closed
+ *    -1 means the connection status is unknown
+ */
+int Curl_ossl_check_cxn(struct connectdata *conn)
+{
+  int rc;
+  char buf;
+
+  rc = SSL_peek(conn->ssl[FIRSTSOCKET].handle, (void*)&buf, 1);
+  if (rc > 0)
+    return 1; /* connection still in place */
+
+  if (rc == 0)
+    return 0; /* connection has been closed */
+
+  return -1; /* connection status unknown */
+}
+
 #endif /* USE_SSLEAY */
 
 /* Selects an OpenSSL crypto engine