From 22ae66dfe1adc5c1a128a856919f5f79d20dc0a3 Mon Sep 17 00:00:00 2001
From: Juliusz Sosinowicz <juliusz@wolfssl.com>
Date: Fri, 11 Dec 2020 13:28:23 +0100
Subject: [PATCH] wolfSSL_BIO_do_connect should look for a socket bio in the
 chain

---
 src/ssl.c | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/src/ssl.c b/src/ssl.c
index ff6fa8d13..a9caa7bcc 100644
--- a/src/ssl.c
+++ b/src/ssl.c
@@ -15734,6 +15734,14 @@ int wolfSSL_set_compression(WOLFSSL* ssl)
             return WOLFSSL_FAILURE;
         }
 
+        while (b && b->type != WOLFSSL_BIO_SOCKET)
+            b = b->next;
+
+        if (!b) {
+            WOLFSSL_ENTER("No socket BIO in chain");
+            return WOLFSSL_FAILURE;
+        }
+
         if (wolfIO_TcpConnect(&sfd, b->ip, b->port, 0) < 0 ) {
             WOLFSSL_ENTER("wolfIO_TcpConnect error");
             return WOLFSSL_FAILURE;