http_stream:cgi

Change one of the properies. Supported properties are:

request(+Term): Associate a request to the stream.
header(+Term): Register a reply header. This header is normally retrieved from the send_header hook to send the reply header to the client.
connection(-Connection): One of Keep-Alive or close.
transfer_encoding(-Tranfer): One of chunked or none. Initially set to none. When switching to chunked from the header hook, it calls the send_header hook and if there is data queed this is send as first chunk. Each subsequent write to the CGI stream emits a chunk. The implementation does not use the chunked stream filter defined by http_chunked_open/3. It shares most of the implementation though and CGI streams do support http_is_chunked/1, http_chunked_flush/2 and http_chunked_add_trailer/3.