photosV2.getUploadUrl

The method starts photo upload workflow and returns an upload URL

Name	Required	Type	Description
uid	false	String	ID of user who uploads photos. Parameter must be set when there is no session.
aid	false	String	Album ID. If not set photos will be added to the Personal album.
gid	false	String	Group ID. Set this and aid to upload into a group album or to create a topic in a group.
count	false	Integer	Number of photos to upload. Default: 1.
placeholders	false	Boolean	Returns an upload URL with placeholders rather than IDs. Allows uploading multiple images by small portions specifying IDs subset during the second stage. Default: false.
topicLink	false	Boolean
target_id	false	String
sizes	false	Long[]	Comma-separated images sizes list in bytes. Allowed list lengths: 0 (not set), 1 (size of the largest image), and count. Allows to avoid proceeding to the stage 2 when some sizes exceed the limit. (If the parameter is not set and any image is too big, stage 2 will fail anyway.)

Session is optional (for External applications - required)

See the full image upload example (in Russian)

{ "expires_ms": "Long", "photo_ids": [ "String" ], "ttl_ms": "Long", "upload_url": "String" }

	json

Используем для подписи secret_key = session_secret_key

Используем для подписи secret_key = application_secret_key

Используем для подписи secret_key = MD5(access_token + application_secret_key)

secret_key =

Сортируем и склеиваем параметры запроса и secret_key

Рассчитываем MD5 от полученной строки и получаем параметр sig