Multipart should not add "Content-Length"

I found following request will cause server error The body of your POST request is not well-formed multipart/form-data

--be1563be-4245-4ac5-8a95-498ba5b57ba8
content-disposition: form-data; name="name"
Content-Length: 22

ic_menu_white_24dp.png
...
--d4653e4a-9a5d-42e5-8a49-fcafbe9c673c
content-disposition: form-data; name="file"; filename="ic_menu_white_24dp.png"
Content-Type: image/png
Content-Length: 92

In okhttp code,

     long contentLength = body.contentLength();
      if (contentLength != -1) {
        sink.writeUtf8("Content-Length: ")
            .writeDecimalLong(contentLength)
            .write(CRLF);
      } else if (countBytes) {
        // We can't measure the body's size without the sizes of its components.
        byteCountBuffer.clear();
        return -1L;
      }

And I google the rfc1867, in the document, there is not description for adding “Content-Length”, so maybe it is a bug for okhttp.

[JakeWharton]

Sounds like a server bug. Any number of headers are allowed in the part bodies so if the length isn’t used it should simply be ignored or if it is used the number if accurate so the server is using it incorrectly.

[swankjesse]

No action for us to take here.