====== file ======
**C → S → C {type:'file', from:..., name:..., nr:..., of:..., data:...}**

Transfer a chunk of file. Reception of file is acknowledged by sending back a [[ixnx:wrtc:rtcgate:fack|fack]] message.

arguments:
  * from - name of client sending the file
  * name - name of file
  * nr - chunk sequential number
  * of - number of chunks constituting the file
  * data - file chunk encoded in [[https://en.wikipedia.org/wiki/Base64|base64]]

optional arguments:
  * to - name of client file is sent to
  * c2c - client to client mode:
      * "yes": do not forward message through SIP, only through direct connection to another wrtc client connected to same server

===== error =====
C → S → C {type:'file', from:..., error:...}

arguments:
  * from - name of client reporting the error
  * error - error message:
      * "001: File transmit aborted": file transfer aborted by user (optional argument from supplied, see below)
      * "101: Packet order mismatch": file chunks received in wrong order (optional argument nr supplied, see below)

optional arguments:
  * to - name of client file was attempted to be sent to
  * nr - received, incorrect chunk sequential number

===== get_log =====
C → S → C {type:'file', get_log:true, from:..., to:...}

arguments:
  * get_log - always true
  * from - name of client asking for log
  * to - name of client requested to send log

Upon receiving a get_log request client should send it's [[ixnx:wrtc:js:api:wrtc:modulelog|wrtc_kit log]] back to the requesting client. Is not aknowledged by any fack message but by a new file message in the opposite direction, containing the first part of the log file.

====== see also ======
[[ixnx:wrtc:rtcgate:fack|fack]]