This is client side log from browser with my code:

        ... - - [31/Aug/2016 15:46:50] "GET /brands/ HTTP/1.0" 200 -
        HEADERS:  Content-Length: 150
        Accept-Language: en-US,en;q=0.8
        Accept: */*
        User-Agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_11_6) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/52.0.2743.116 Safari/537.36
        X-Real-Ip: ...
        Origin: ...
        Content-Type: multipart/form-data; boundary=----WebKitFormBoundaryfTd4Bca7eEBHYgjx
        X-Forwarded-For: ...
        Accept-Encoding: gzip, deflate
        Connection: close
        Host: ...
        Referer: ...


        ORIGIN:  ...
        Values> CombinedMultiDict([ImmutableMultiDict([]), ImmutableMultiDict([('file', '[object Object]')])])
        REQUEST:  ImmutableMultiDict([('file', '[object Object]')])
        172.17.0.4 - - [31/Aug/2016 15:46:56] "POST /media HTTP/1.0" 400 -


This is postman log:


        HEADERS:  Content-Length: 18698
        Accept-Language: en-US,en;q=0.8,ro;q=0.6,ru;q=0.4
        User-Agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_11_6) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/52.0.2743.116 Safari/537.36
        Accept: */*
        Cache-Control: no-cache
        X-Real-Ip: ...
        Origin: chrome-extension://fhbjgbiflinjbdggehcddcbncdddomop
        Postman-Token: 45e161d9-04cc-9572-626b-4f43c58725a1
        Content-Type: multipart/form-data; boundary=----WebKitFormBoundaryZqjumF1RROIba4fp
        X-Forwarded-For: ...
        Accept-Encoding: gzip, deflate
        Connection: close
        Host: ...


        ORIGIN:  chrome-extension://fhbjgbiflinjbdggehcddcbncdddomop
        Values> CombinedMultiDict([ImmutableMultiDict([]), ImmutableMultiDict([])])
        REQUEST:  ImmutableMultiDict([])
        png
        file_path:  /var/www/assets/img/...
        ... - - [31/Aug/2016 15:47:18] "POST /media HTTP/1.0" 200 -