The switch in the tcp_usrreq function calls in_setpeeraddr(), which copies the foreign IP address and foreign port number from the protocol control block and returns these to the server process.

tcp_usrreq 函数中的切换调用 in_setpeeraddr()，后者从协议控制块复制外来 IP 地址和外来端口号，并将其返回到服务器进程。

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Circuit control with microcomputer chip: The circuit has the function of address correction, which makes it more stable;

电路微电脑芯片控制，电路自带住处纠错功能，使电路更稳定；

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Elegant and stylish appearance, graceful and clear acoustic quality, with the remote control function, you can use the remote control to set the sound box frequency, address code and volume.

外型美观大方、音质优美清晰。带遥控功能，可用遥控设置音箱的频率、地址码、音量。

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