A protocol-specific call, pr_usrreq, is then made, which switches to the corresponding protocol-specific request associated with the socket descriptor. The prototype of the pr_usrreq function is.
然后进行协议特定的调用pr_usrreq，进而切换到与套接字描述符关联的相应协议特定的请求。
Ruifeng switch (Dongguan) co., Ltd. accumulated decades of professional experience in producing switches and socket connector.
瑞丰开关(东莞)有限公司积累几十年专业生产开关与插座连接器丰富经验。
Design and production of the microswitch. Touch switch. Toggle switch. Switch button. Button switch. Headphone socket. Slide switches, USB socket. Self-locking switch, DC socket. Vibration switch.
设计生产微动开关。轻触开关。拨动开关。按键开关。按钮开关。耳机插座。滑动开关。
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