Fix incorrect condition in is_compression_bad()
The transport is allowed to be MBEDTLS_SSL_TRANSPORT_DATAGRAM when the
compression is MBEDTLS_SSL_COMPRESS_NULL.
Signed-off-by: David Horstmann <david.horstmann@arm.com>
diff --git a/library/ssl_cli.c b/library/ssl_cli.c
index 788c190..3475aa4 100644
--- a/library/ssl_cli.c
+++ b/library/ssl_cli.c
@@ -2064,7 +2064,8 @@
#if defined(MBEDTLS_ZLIB_SUPPORT)
/* See comments in ssl_write_client_hello() */
#if defined(MBEDTLS_SSL_PROTO_DTLS)
- if( ssl->conf->transport == MBEDTLS_SSL_TRANSPORT_DATAGRAM )
+ if( ssl->conf->transport == MBEDTLS_SSL_TRANSPORT_DATAGRAM &&
+ comp != MBEDTLS_SSL_COMPRESS_NULL )
bad_comp = 1;
#endif