An action block that sends a response to an incoming HTTP request.
The fiber will pause until the response has been fully sent.
This block sends the response to an incoming HTTP request as accepted by a preceding HTTP accept block in the same fiber. It will only do so when executed within 5 seconds of accepting the request.
The response content body and response content path can both be arrays thereof,
the elements of both are interleaved beginning with body then file, body and so on.
If only one array is used, or one is longer that the other, the (remaining) elements are simply concatenated. null elements are ignored.
This can be used to concatenate files before upload, or send a multipart body.
"Content-Disposition".