I have not used cURL, but I suspect it may be using \”application/x-www-form-urlencoded” or “multipart/form-data\” encoding to send the message.
The HTTP adapter just passes the raw message content to the pipeline.
So if is not plain Xml then you will need to decode it.
How are you expecting messages to be sent to the Http adapter. Is this internal where you have control over the sender or are you expecting external parties to send data.