ocpp_rs 0.4.2

no_std + alloc OCPP 1.6 and 2.1 protocol library (OCPP-J parse/serialize, CallResult correlation).
Documentation 
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//! OCPP 2.1 Heartbeat request/response payloads.

use crate::v21::datatypes::CustomDataType;
use crate::v21::datatypes::DateTimeWrapper;
use serde::{Deserialize, Serialize};

#[derive(Debug, Clone, PartialEq, Eq, Serialize, Deserialize)]
#[serde(rename_all = "camelCase", deny_unknown_fields)]
pub struct HeartbeatRequest {
    #[serde(skip_serializing_if = "Option::is_none")]
    #[serde(default)]
    pub custom_data: Option<CustomDataType>,
}

#[derive(Debug, Clone, PartialEq, Eq, Serialize, Deserialize)]
#[serde(rename_all = "camelCase", deny_unknown_fields)]
pub struct HeartbeatResponse {
    #[serde(with = "crate::v21::utils::rfc3339_date_time")]
    pub current_time: DateTimeWrapper,
    #[serde(skip_serializing_if = "Option::is_none")]
    #[serde(default)]
    pub custom_data: Option<CustomDataType>,
}