Linux Buffer Size Adjustment Guide

In Linux, the setsockopt function can be used to adjust the size of the buffer.

The specific steps are as follows:

1. Include header files in the program.
2. Include two libraries: sys/types.h and sys/socket.h.
3. Create a socket and retrieve the socket file descriptor.
4. Set the buffer size using the setsockopt function.
5. Establish a socket file descriptor and set the receive buffer and send buffer size for it.
6. Note: SO_RCVBUF is used for setting the receive buffer size, while SO_SNDBUF is used for setting the send buffer size.
7. Check to see if the settings have been successfully configured.
8. Retrieve the receive buffer size and send buffer size for the specified socket by using the getsockopt function.
9. You can check if the buffer size has been successfully set by printing the values of rcvbuf and sndbuf.

It is important to note that the third parameter in the setsockopt function is used to specify the level of the option, for example SOL_SOCKET represents the socket level. In addition, the setting of buffer size may be limited by the system, so the specified size may not be fully met.