MUX_MSG_HELLO
if ((r = sshbuf_put_u32(out, MUX_MSG_HELLO)) != 0 ||
if (type == MUX_MSG_HELLO)
"received 0x%08x", MUX_MSG_HELLO, type);
if ((r = sshbuf_put_u32(m, MUX_MSG_HELLO)) != 0 ||
{ MUX_MSG_HELLO, mux_master_process_hello },
if (type != MUX_MSG_HELLO) {
error_f("expected HELLO (%u) got %u", MUX_MSG_HELLO, type);