Fix bye packet length

Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>

diff --git a/cstp.c b/cstp.c
index 6b7f009..c58da8f 100644 (file)
--- a/cstp.c
+++ b/cstp.c
@@ -685,8 +685,8 @@ int cstp_bye(struct openconnect_info *vpninfo, char *reason)
        memcpy(bye_pkt, data_hdr, 8);
        memcpy(bye_pkt + 9, reason, reason_len);
 
-       bye_pkt[4] = reason_len >> 8;
-       bye_pkt[5] = reason_len & 0xff;
+       bye_pkt[4] = (reason_len + 1) >> 8;
+       bye_pkt[5] = (reason_len + 1) & 0xff;
        bye_pkt[6] = AC_PKT_DISCONN;
        bye_pkt[8] = 0xb0;