# agora::rtc::DownlinkNetworkInfo结构体 参考 (/zh-CN/api-reference/rtc-server-sdk/cpp/structagora-1-1rtc-1-1-downlink-network-info)

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## 详细描述 [#详细描述]

下行网络信息。

## 构造及析构函数说明 [#构造及析构函数说明]

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### DownlinkNetworkInfo() [1/2] [#downlinknetworkinfo-12]

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agora::rtc::DownlinkNetworkInfo::DownlinkNetworkInfo()

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### DownlinkNetworkInfo() [2/2] [#downlinknetworkinfo-22]

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agora::rtc::DownlinkNetworkInfo::DownlinkNetworkInfo(const [DownlinkNetworkInfo](/zh-CN/api-reference/rtc-server-sdk/cpp/structagora-1-1rtc-1-1-downlink-network-info) & *info*)

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### ~DownlinkNetworkInfo() [#downlinknetworkinfo]

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agora::rtc::DownlinkNetworkInfo::~DownlinkNetworkInfo()

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## 成员函数说明 [#成员函数说明]

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### operator=() [#operator]

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[DownlinkNetworkInfo](/zh-CN/api-reference/rtc-server-sdk/cpp/structagora-1-1rtc-1-1-downlink-network-info)& agora::rtc::DownlinkNetworkInfo::operator=(const [DownlinkNetworkInfo](/zh-CN/api-reference/rtc-server-sdk/cpp/structagora-1-1rtc-1-1-downlink-network-info) & *rhs*)

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## 类成员变量说明 [#类成员变量说明]

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### lastmile_buffer_delay_time_ms [#lastmile_buffer_delay_time_ms]

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int agora::rtc::DownlinkNetworkInfo::lastmile_buffer_delay_time_ms

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lastmile 视频延时（毫秒）。

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### bandwidth_estimation_bps [#bandwidth_estimation_bps]

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int agora::rtc::DownlinkNetworkInfo::bandwidth_estimation_bps

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视频缩小之后，当前的下行带宽预测（bps）。

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### total_downscale_level_count [#total_downscale_level_count]

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int agora::rtc::DownlinkNetworkInfo::total_downscale_level_count

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视频缩小级别总数。

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### peer_downlink_info [#peer_downlink_info]

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[PeerDownlinkInfo](/zh-CN/api-reference/rtc-server-sdk/cpp/structagora-1-1rtc-1-1-downlink-network-info-1-1-peer-downlink-info)* agora::rtc::DownlinkNetworkInfo::peer_downlink_info

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远端用户网络下行信息。

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### total_received_video_count [#total_received_video_count]

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int agora::rtc::DownlinkNetworkInfo::total_received_video_count

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收到视频帧总数。