Setsockopt function in C

A setsockopt() method is a crucial networking feature in the C programming language. It is a highly handy socket-related function. To understand this function, we must first understand the concept of a socket.

A socket is software that controls the whole network and serves as an endpoint for transmitting and receiving packets (data) throughout the network. It functions as a bridge between two nodes on the same or distinct networks.

setsockopt() is a function in the socket programming language (application programming) that controls this communication by allocating buffer space, controlling time, and transmitting.

Characteristics of setsocket() function

There are several characteristics of setsocket() function. Some Characteristics of setsocket() function are as follows:

1. header file: The setsockopt() method is a predefined function whose syntax is written in a header file in the c library named <sys/socket.h>.

2. syntax:

3. Return: If the setsockopt () function is called effectively, it returns zero. However, a failed call to the setsockopt() method returns 0. It returns a value in integers in this case.

Applications of set setsockpt()

The setsockopt() method allows an application program to alter socket behavior. An application program can use Setsockopt () to allocate buffer space, regulate timeouts, or allow socket data broadcasts. The socket-level parameters accessible to setsockopt() are defined in the <sys/socket.h> header.

Options may be available at several protocol levels. The SO_ options are constantly available at the highest socket level.

Example:

Filename: Socket.c

Output:

The probabilistic value of x2 is : = 536  
The  buffered value is = 24646 

Explanation:

In this example, we must include the following header files in our source code: sys/types.h>, sys/socket.h>, netinet.h/in.h>, and netinet/tcp.h> to run this program. To begin, we will establish a socket that will be used to call a standard function socket () and supply some standard arguments inside its parentheses. Now, we'll use the getsockopt () method to get the most recent value for a socket and save it in a variable called a2. Now, we'll use the setsockopt () method to set the value of the socket. Following that, we will use the getsockopt () method to check the value of the socket in the buffer once more and report its value.

Example: 2

Filename: Socket2.c

Output:

The present state of the responding function is:  OFF  
This functional value has been is installed  :
Monitoring the continuous response:  ON