Note from Figure 3 that the proto structure defines the transport-specific methods, while the proto_ops structure defines the general socket methods.
注意在图3中，proto结构定义了传输特有的方法，而proto_ops结构则定义了通用的socket方法。
NOTE 1 Goods and services includes the [value chain/lifecycle] of the activity, product or service, which includes, for example, transport, packaging and end-use/disposal.
注1材料和服务包括活动，产品或服务，例如运输，包装和最终使用/处理的【价值链/生命周期】。
Side note: UDP port 2873 uses the Datagram Protocol, a communications protocol for the Internet network layer, transport layer, and session layer.
附注：UDP端口2873使用数据报协议，一个通信协议的互联网络层，运输层，会话层。
Note: The Yiwu area freight charge, other local transport expense from pay. Thanks!
注：义乌市地区包运费，其他地区运费自付。谢谢！
Note: The Yiwu area freight charge, other local transport expense from pay. Thanks!
注：义乌市地区包运费，其他地区运费自付。谢谢！
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