cumiddleware

const (
	// HeaderRDMAToken is the single combined header sent by the real
	// cuObject client. Its value is a colon-delimited token per the
	// cuObj RDMA descriptor protocol. The whole token is passed through
	// verbatim to the RDMA backend as the descriptor.
	//
	// This is the canonical definition of the wire format; the encoder in
	// cuwrapper/rdma_host_client_wrapper.cpp (build_token) must stay in
	// sync with it. Fields, in order, colon-delimited, lowercase hex:
	//
	//   # | Field                                  | Type     | Width
	//   --|-----------------------------------------|----------|-----------
	//   1 | Remote base address (GPUMEM/SYSMEM)      | uint64   | 16 chars
	//   2 | Max size of buffer region from base addr | uint32   | 8 chars
	//   3 | Remote key (rkey)                        | uint32   | 8 chars
	//   4 | LID of the client NIC                    | uint16   | 4 chars
	//   5 | DCTN                                     | uint32   | 6 chars
	//   6 | GID present (1|0)                        | bool     | 1 char
	//   7 | GID of client NIC                        | 16 bytes | 32 chars
	//
	// Example: "0102030405060708:01020304:01020304:0102:010203:1:0102030405060708090a0b0c0d0e0f10"
	HeaderRDMAToken = "X-Amz-Rdma-Token"

	// HeaderRDMAReply is the response header sent after a successful
	// RDMA-offloaded PUT/GET, per NVIDIA's documented cuObject workflow:
	// "If the transfer is successfully offloaded to RDMA, the proxy responds
	// with x-amz-rdma-reply." This implementation carries a numeric RDMA
	// status code (e.g. HTTP-style 200/204/206 success classes) and is set
	// only after the RDMA operation has actually succeeded.
	HeaderRDMAReply = "X-Amz-Rdma-Reply"

	// HeaderRDMABytesTransferred is the statistics header documented
	// alongside HeaderRDMAToken/HeaderRDMAReply ("x-amz-rdma-bytes-transferred
	// (for statistics)"). This header carries the numeric transferred-byte
	// count and is set together with HeaderRDMAReply — see SetRDMAReplyHeader.
	HeaderRDMABytesTransferred = "X-Amz-Rdma-Bytes-Transferred"
)