--5e29b94943f2485c9763384cd71ddfa9
Content-Disposition: form-data; name="foo"

bar
--5e29b94943f2485c9763384cd71ddfa9
Content-Disposition: form-data; name="spam"; filename="file.txt"
Content-Type: text/plain

checking data

--5e29b94943f2485c9763384cd71ddfa9--