The new MTU value only should be applied in server side after sending the ATT_MTU_RESP so encode the response using the old MTU value. --- src/attrib-server.c | 4 +++- 1 files changed, 3 insertions(+), 1 deletions(-) diff --git a/src/attrib-server.c b/src/attrib-server.c index 62c10f4..9de4c81 100644 --- a/src/attrib-server.c +++ b/src/attrib-server.c @@ -773,9 +773,11 @@ static uint16_t write_value(struct gatt_channel *channel, uint16_t handle, static uint16_t mtu_exchange(struct gatt_channel *channel, uint16_t mtu, uint8_t *pdu, int len) { + guint old_mtu = channel->mtu; + channel->mtu = MIN(mtu, channel->mtu); - return enc_mtu_resp(channel->mtu, pdu, len); + return enc_mtu_resp(old_mtu, pdu, len); } static void channel_disconnect(void *user_data) -- 1.7.0.4 -- To unsubscribe from this list: send the line "unsubscribe linux-bluetooth" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html