idevice: call SSL_shutdown a second time if required

This will fix that:
lockdownd[25] <Notice>: 00484000 _receive_message: Could not receive size of message, expected 4 bytes, got -1 bytes: (54, Connection reset by peer)

1 files changed, 4 insertions, 1 deletions

diff --git a/src/idevice.c b/src/idevice.c
index 5fa2e85..d01aa8f 100644
--- a/src/idevice.c
+++ b/src/idevice.c
@@ -820,7 +820,10 @@ idevice_error_t idevice_connection_disable_ssl(idevice_connection_t connection)
 
 #ifdef HAVE_OPENSSL
         if (connection->ssl_data->session) {
-                SSL_shutdown(connection->ssl_data->session);
+                /* see: https://www.openssl.org/docs/ssl/SSL_shutdown.html#RETURN_VALUES */
+                if (SSL_shutdown(connection->ssl_data->session) == 0) {
+                        SSL_shutdown(connection->ssl_data->session);
+                }
         }
 #else
         if (connection->ssl_data->session) {