static void deadline_enc(grpc_chttp2_hpack_compressor *c, gpr_timespec deadline,
framer_state *st) {
char timeout_str[GRPC_HTTP2_TIMEOUT_ENCODE_MIN_BUFSIZE];
grpc_mdelem *mdelem;
grpc_http2_encode_timeout(
gpr_time_sub(deadline, gpr_now(deadline.clock_type)), timeout_str);
mdelem = grpc_mdelem_from_metadata_strings(
GRPC_MDSTR_GRPC_TIMEOUT, grpc_mdstr_from_string(timeout_str));
hpack_enc(c, mdelem, st);
GRPC_MDELEM_UNREF(mdelem);
}
static void deadline_enc(grpc_exec_ctx *exec_ctx,
grpc_chttp2_hpack_compressor *c, gpr_timespec deadline,
framer_state *st) {
char timeout_str[GRPC_HTTP2_TIMEOUT_ENCODE_MIN_BUFSIZE];
grpc_mdelem mdelem;
grpc_http2_encode_timeout(
gpr_time_sub(deadline, gpr_now(deadline.clock_type)), timeout_str);
mdelem = grpc_mdelem_from_slices(exec_ctx, GRPC_MDSTR_GRPC_TIMEOUT,
grpc_slice_from_copied_string(timeout_str));
hpack_enc(exec_ctx, c, mdelem, st);
GRPC_MDELEM_UNREF(exec_ctx, mdelem);
}
void grpc_chttp2_encode_header(grpc_exec_ctx *exec_ctx,
grpc_chttp2_hpack_compressor *c,
uint32_t stream_id,
grpc_metadata_batch *metadata, int is_eof,
size_t max_frame_size,
grpc_transport_one_way_stats *stats,
grpc_slice_buffer *outbuf) {
framer_state st;
grpc_linked_mdelem *l;
gpr_timespec deadline;
GPR_ASSERT(stream_id != 0);
st.seen_regular_header = 0;
st.stream_id = stream_id;
st.output = outbuf;
st.is_first_frame = 1;
st.stats = stats;
st.max_frame_size = max_frame_size;
/* Encode a metadata batch; store the returned values, representing
a metadata element that needs to be unreffed back into the metadata
slot. THIS MAY NOT BE THE SAME ELEMENT (if a decoder table slot got
updated). After this loop, we'll do a batch unref of elements. */
begin_frame(&st);
if (c->advertise_table_size_change != 0) {
emit_advertise_table_size_change(c, &st);
}
grpc_metadata_batch_assert_ok(metadata);
for (l = metadata->list.head; l; l = l->next) {
hpack_enc(exec_ctx, c, l->md, &st);
}
deadline = metadata->deadline;
if (gpr_time_cmp(deadline, gpr_inf_future(deadline.clock_type)) != 0) {
deadline_enc(exec_ctx, c, deadline, &st);
}
finish_frame(&st, 1, is_eof);
}
