signal callback delegate or function to connect
void callback(uint chunkSize, soup.server_message.ServerMessage serverMessage)
chunkSize the number of bytes written (optional)
serverMessage the instance the signal is connected to (optional)
Yes.After to execute callback after default handler, No.After to execute before (default)
Signal ID
Connect to WroteBodyData signal.
Emitted immediately after writing a portion of the message body to the network.