Post an image

Posting an image requires two steps.

Upload

POST the image to the user's uploads stream (for user fred, it's at /api/user/fred/uploads). The Content-Type should be the right content-type for the file (like image/gif or image/png). The data should be raw binary data for the file.

POST /api/user/fred/uploads HTTP/1.1
Host: pump.example
Content-Type: image/jpeg
Content-Length: 128443

AF^&%$LK*...

The results will be an ActivityStrea.ms representation of the object, in JSON.

200 OK
Content-Type: application/json

{
    "id": "https://pump.example/api/image/Xkdk_ffK1dkf2",
    "objectType": "image",
    "image": {
        "url": "https://pump.example/uploads/2012/12/30/ZFxf-3.jpg"        
    }
    "fullImage": {
        "url": "https://pump.example/uploads/2012/12/30/ZFxf-3.jpg"        
    }
}

Post

Use the JSON results of the upload step to create a "post" Activity Streams activity and POST it to the user's feed (for user fred, it's /api/user/fred/feed).

{
    "verb": "post",
    "object": {
        "id": "https://pump.example/api/image/Xkdk_ffK1dkf2",
        "objectType": "image"
    }
}