More ssl_set_XXX() functions can return BAD_INPUT
diff --git a/include/polarssl/ssl.h b/include/polarssl/ssl.h
index 09bc907..e68714a 100644
--- a/include/polarssl/ssl.h
+++ b/include/polarssl/ssl.h
@@ -959,11 +959,12 @@
* \param transport transport type:
* SSL_TRANSPORT_STREAM for TLS,
* SSL_TRANSPORT_DATAGRAM for DTLS.
+ * \return 0 on success or POLARSSL_ERR_SSL_BAD_INPUT_DATA
*
* \note If DTLS is selected and max and/or min version are less
* than TLS 1.1 (DTLS 1.0) they are upped to that value.
*/
-void ssl_set_transport( ssl_context *ssl, int transport );
+int ssl_set_transport( ssl_context *ssl, int transport );
/**
* \brief Set the certificate verification mode
@@ -1377,38 +1378,35 @@
* (Default: SSL_MAX_MAJOR_VERSION, SSL_MAX_MINOR_VERSION)
*
* Note: This ignores ciphersuites from 'higher' versions.
- * Note: Input outside of the SSL_MAX_XXXXX_VERSION and
- * SSL_MIN_XXXXX_VERSION range is ignored.
*
* \param ssl SSL context
* \param major Major version number (only SSL_MAJOR_VERSION_3 supported)
* \param minor Minor version number (SSL_MINOR_VERSION_0,
* SSL_MINOR_VERSION_1 and SSL_MINOR_VERSION_2,
* SSL_MINOR_VERSION_3 supported)
+ * \return 0 on success or POLARSSL_ERR_SSL_BAD_INPUT_DATA
*
* \note With DTLS, use SSL_MINOR_VERSION_2 for DTLS 1.0 and
* SSL_MINOR_VERSION_3 for DTLS 1.2
*/
-void ssl_set_max_version( ssl_context *ssl, int major, int minor );
+int ssl_set_max_version( ssl_context *ssl, int major, int minor );
/**
* \brief Set the minimum accepted SSL/TLS protocol version
* (Default: SSL_MIN_MAJOR_VERSION, SSL_MIN_MINOR_VERSION)
*
- * Note: Input outside of the SSL_MAX_XXXXX_VERSION and
- * SSL_MIN_XXXXX_VERSION range is ignored.
- *
* \param ssl SSL context
* \param major Major version number (only SSL_MAJOR_VERSION_3 supported)
* \param minor Minor version number (SSL_MINOR_VERSION_0,
* SSL_MINOR_VERSION_1 and SSL_MINOR_VERSION_2,
* SSL_MINOR_VERSION_3 supported)
+ * \return 0 on success or POLARSSL_ERR_SSL_BAD_INPUT_DATA
*
* \note With DTLS, use SSL_MINOR_VERSION_2 for DTLS 1.0 and
* SSL_MINOR_VERSION_3 for DTLS 1.2
*/
-void ssl_set_min_version( ssl_context *ssl, int major, int minor );
+int ssl_set_min_version( ssl_context *ssl, int major, int minor );
#if defined(POLARSSL_SSL_MAX_FRAGMENT_LENGTH)
/**