HTTP multipart/form-data processing by server

Specific Domains Web Stack
2

Workaround for now (it is working at least in my demo app):

import HTTP, HTTP.Parsers
"""
  returns embedded data or nothing
"""
function parse_multipart(data::Vector{UInt8})
    chunk_end = HTTP.Parsers.find_end_of_chunk_size(data)
    if chunk_end == 0
        return nothing
    end

    boundary = data[1:chunk_end - 2] # should be without \r\n
    header_end = HTTP.Parsers.find_end_of_header(data)

    data_start = header_end + 1
    data_end = length(data) - chunk_end - 2
    # check that block ending is with same boundary + two additional hyphens
    if (data[data_end + 1: end] == [boundary..., 0x2d, 0x2d, 0x0d, 0x0a])
       return data[data_start : data_end]
    end

    return nothing
end

...
data = parse_multipart(c.conn.request.body)

Looks like there is a pull request with similar function but still not merged into HTTP - https://github.com/JuliaWeb/HTTP.jl/pull/264

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