I tried to upload an image to the server with ktor-client. But it lacks `Content-Length`. May I know...

# ktor

[pandawarrior]

I tried to upload an image to the server with ktor-client. But it lacks Content-Length. May I know how can I put it in please?

-.kt

[Jonas Bark]

I mentioned this here:
https://github.com/ktorio/ktor/pull/785

[Jonas Bark]

Note: the MultiPartFormDataContent from ktor should also support calculating contentLength

[Jonas Bark]

to go around this you can create your own subclass for Outgoing.WriteChannelContent like this:
https://gist.github.com/jonasbark/3a0054dcf0c8ac9a896a0d805574914c
please note calculating contentLength probably has bad performance

[pandawarrior]

Thanks! I saw your changes in the latest ktor client lib. Does that mean that MultiPartFormDataContent cannot calculate contentLength yet?

[Jonas Bark]

Exactly. Can you open a ticket for this? I think it's an important thing that's missing at the moment :)