Multipart/form-data POST

gistfile1.txt

HTML:

<form action="/api/thing" method="post" enctype="multipart/form-data">
<input name="caption">
<input type="file" name="file">
<input type="submit" value="Submit">
</form>

Request:

POST /api/thing HTTP/1.1
Content-Type: multipart/form-data; boundary=--foo
Content-Length: 12345

--foo
Content-Disposition: form-data; name="caption"

Summer vacation
--foo
Content-Disposition: form-data; name="image1"; filename="GrandCanyon.jpg"
Content-Type: image/jpeg

(Binary data)
--foo--

gistfile2.txt

POST /api/thing HTTP/1.1
Content-Type: multipart/form-data; boundary=--foo
Content-Length: 12345

--foo
Content-Disposition: form-data; name="FooModel"
Content-Type: application/json

{"json":"data"}
--foo
Content-Disposition: form-data; name="BarModel"
Content-Type: application/json

{"json":"data"}
--foo--