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Message.md

File metadata and controls

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Message format

Everything described in this file is part of the encrypted message content, so nothing in here affects the client/server interface.

Main structure

{
    "type": "text",
    "content": "Moie!",
    "attachments": []
}

attachments may be null or unset. In both cases, client must treat it like an empty list.

Types

  • In type "text", the content field contains plain text
  • In type "reaction", the content field contains an emoji

Attachments

An array of attachment objects like

{
    "id": "f8cb093bcbcefc48edc544a5853cc773",
    "name": "img2.png",
    "mimeType": "image/png",
    "encryption": {
        "algorithm": "chacha20poly1305-ietf-nonce12prefixed",
        "key": "B/lViSzth+5SybaOk6TvE6HGPdQMSCAQs1MMlg2S7AA="
    },
    "thumbnail": {
        "id": "cdd28827b7e17a5c1c83580fcdc6974b",
        "mimeType": "image/jpeg",
        "width": 200,
        "height": 100,
        "encryption": {
            "algorithm": "chacha20poly1305-ietf-nonce12prefixed",
            "key": "wa4WgcueHGJSZ20IACWfj8XVj6g5PWEBFch229l0BY4="
        }
    }
}

with

  • id used to build the attachment download URL,
  • name the file name,
  • mimeType the file type,
  • conversationKeyId the ID of the key used to encrypt this attachment,
  • thumbnail a thumbnail for this attachment (can be null).