[FIXED] How I can check if it something available in socket?

Issue

I write a simple application that provide connection between two computers in C. I have a problem with simultaneously reading and writing in socket. I am able to check if user press any key by getch(), but I don't know how to check if it something in socket buffer. When I use read() function it wait until be something in socket. I wanted to check socket buffer and then use read(), but I can't find any function/flag to check this. Maybe is different solution for this problem, perhaps use another thread to read?

Solution

You can use sys/ioctl.h file's method ioctl:

#include <sys/ioctl.h>

...

int count;
ioctl(fd, FIONREAD, &count);

Reference credit : This Answer

Answered By - Kushal

Answer Checked By - Robin (PHPFixing Admin)