ms_message("All streams are encrypted key exchanged using %s",call->current_params->media_encryption==LinphoneMediaEncryptionZRTP?"ZRTP":call->current_params->media_encryption==LinphoneMediaEncryptionDTLS?"DTLS":"Unknown mechanism");
* Add a listener in order to be notified of LinphoneCall events. Once an event is received, registred LinphoneCallCbs are
* invoked sequencially.
* @param[in] call LinphoneCall object to monitor.
* @param[in] cbs A LinphoneCallCbs object holding the callbacks you need. A reference is taken by the LinphoneCall until you invoke linphone_call_remove_callbacks().
* File transfer receive callback prototype. This function is called by the core upon an incoming File transfer is started. This function may be call several time for the same file in case of large file.
* @param message #LinphoneChatMessage message from which the body is received.
* @param content #LinphoneContent incoming content information
* @param buffer #LinphoneBuffer holding the received data. Empty buffer means end of file.
* File transfer send callback prototype. This function is called by the core when an outgoing file transfer is started. This function is called until size is set to 0.
* @param message #LinphoneChatMessage message from which the body is received.