server.c
tig_freebsdfoundation.org (Tiger Gao)
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	tig_freebsdfoundation.org
	Apr 16 2020, 3:22 PM

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server.c
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	// Server side C/C++ program to demonstrate Socket programming
	#include <unistd.h>
	#include <stdio.h>
	#include <sys/socket.h>
	#include <stdlib.h>
	#include <netinet/in.h>
	#include <string.h>
	#define PORT 8080
	int main(int argc, char const *argv[])
	{
	int server_fd, new_socket, valread;
	struct sockaddr_in address;
	int opt = 1;
	int addrlen = sizeof(address);
	char buffer[1024] = {0};
	char *hello = "Hello from server";

	// Creating socket file descriptor
	if ((server_fd = socket(AF_INET, SOCK_STREAM, 0)) == 0)
	{
	perror("socket failed");
	exit(EXIT_FAILURE);
	}

	address.sin_family = AF_INET;
	address.sin_addr.s_addr = INADDR_ANY;
	address.sin_port = htons( PORT );

	// Forcefully attaching socket to the port 8080
	if (bind(server_fd, (struct sockaddr *)&address,
	sizeof(address))<0)
	{
	perror("bind failed");
	exit(EXIT_FAILURE);
	}
	if (listen(server_fd, 3) < 0)
	{
	perror("listen");
	exit(EXIT_FAILURE);
	}
	if ((new_socket = accept(server_fd, (struct sockaddr *)&address,
	(socklen_t*)&addrlen))<0)
	{
	perror("accept");
	exit(EXIT_FAILURE);
	}
	valread = read( new_socket , buffer, 1024);
	printf("%s\n",buffer );
	send(new_socket , hello , strlen(hello) , 0 );
	printf("Hello message sent\n");
	return 0;
	}