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#include "connection.h"
#include <ccan/take/take.h>
#include <wire/wire_io.h>
static void daemon_conn_enqueue(struct daemon_conn *dc, u8 *msg)
{
size_t n = tal_count(dc->msg_out);
tal_resize(&dc->msg_out, n + 1);
dc->msg_out[n] = tal_dup_arr(dc->ctx, u8, msg, tal_count(msg), 0);
}
static const u8 *daemon_conn_dequeue(struct daemon_conn *dc)
{
const u8 *msg;
size_t n = tal_count(dc->msg_out);
if (n == 0)
return NULL;
msg = dc->msg_out[0];
memmove(dc->msg_out, dc->msg_out + 1, sizeof(dc->msg_in[0]) * (n - 1));
tal_resize(&dc->msg_out, n - 1);
return msg;
}
struct io_plan *daemon_conn_read_next(struct io_conn *conn,
struct daemon_conn *dc)
{
dc->msg_in = tal_free(dc->msg_in);
return io_read_wire(conn, dc->ctx, &dc->msg_in, dc->daemon_conn_recv,
dc);
}
struct io_plan *daemon_conn_write_next(struct io_conn *conn,
struct daemon_conn *dc)
{
const u8 *msg = daemon_conn_dequeue(dc);
if (msg) {
return io_write_wire(conn, take(msg), daemon_conn_write_next,
dc);
} else if (dc->msg_queue_cleared_cb) {
return dc->msg_queue_cleared_cb(conn, dc);
} else {
return io_out_wait(conn, dc, daemon_conn_write_next, dc);
}
}
static struct io_plan *daemon_conn_start(struct io_conn *conn,
struct daemon_conn *dc)
{
dc->conn = conn;
return io_duplex(conn, daemon_conn_read_next(conn, dc),
daemon_conn_write_next(conn, dc));
}
void daemon_conn_init(tal_t *ctx, struct daemon_conn *dc, int fd,
struct io_plan *(*daemon_conn_recv)(struct io_conn *,
struct daemon_conn *))
{
dc->daemon_conn_recv = daemon_conn_recv;
dc->ctx = ctx;
dc->msg_in = NULL;
dc->msg_out = tal_arr(ctx, u8 *, 0);
dc->conn_fd = fd;
dc->msg_queue_cleared_cb = NULL;
io_new_conn(ctx, fd, daemon_conn_start, dc);
}
void daemon_conn_send(struct daemon_conn *dc, u8 *msg)
{
daemon_conn_enqueue(dc, msg);
io_wake(dc);
}