12.1 rsi/response.h — Building responses
<rsi/response.h> is the sending half of a source's serve loop. After you handle a request, you reply on the source fd with a framed response. This header builds those frames for you: you pass the result as flat arrays, and librsi validates and heap-encodes the wire frame — you never hand-pack a byte.
Every response echoes the request's id and its op-code (OR'd with the response bit) and carries an RSI_* status. Most operations are status-only; five carry a payload on success. Any operation can report a non-OK status with the status-only helper.
For the wire, a response is a 14-byte header (echoed request id, op-code | RSI_RESPONSE_BIT) plus a 4-byte RSI_* status, followed by an op-specific payload for payload-bearing successes; multi-byte integers are little-endian and names/data are length-prefixed. You don't assemble any of that — the helpers do. Status and target-type constants (RSI_OK, RSI_PATH_TARGET_GUID, …) come from <pkm/lcs.h>.
12.1.1 See also #
<rsi/request.h>— decoding the request each of these replies to.- Building responses — choosing and filling the right responder.