static int ftp_restart(FTPContext *s, int64_t pos) { char command[CONTROL_BUFFER_SIZE]; const int rest_codes[] = {350, 0}; snprintf(command, sizeof(command), "REST %"PRId64"\r\n", pos); if (!ftp_send_command(s, command, rest_codes, NULL)) return AVERROR(EIO); return 0; }