Can we get the source code of Berkeley sockets API..

I mean the source code of sendto, recv, listen... I mean ho开发者_如何学Cw they internally work at the kernel level...?

Of course you can get the kernel source code for the sockets API, simply download any of the open source UNIX or UNIX-like kernels: Linux, FreeBSD (Building and Installing a Custom Kernel), OpenBSD (Building the System from Source), NetBSD (NetBSD Documentation: Kernel) and probably others.