问题
What is the size limit for requests sent to incoming webhooks?
I tried looking for this information in the documentation but could not find it.
I like to send MessageCard to the incoming webhooks. The MessageCard will have an image but I don't want to use an URL for the image but instead want to embed the image. This works on Card Playground (https://messagecardplayground.azurewebsites.net/) but I'm getting a HTTP 413 error when sending to incoming webhook.
I don't want to persist the image to file if I don't have to.
来源：https://stackoverflow.com/questions/51957658/incoming-webhook-request-size-limits