SocketServer.c

#include <sys/types.h>
#include <sys/socket.h>
#include <netinet/in.h>
#include <arpa/inet.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>

int main(int argc, char* argv[])
{
	struct sockaddr_in sa;

	int ssock = socket(PF_INET, SOCK_STREAM, IPPROTO_TCP);
	if (ssock == -1) {
		perror("cannot create socket");
		exit(EXIT_FAILURE);
	}

	memset(&sa, 0, sizeof sa);
	sa.sin_family = AF_INET;
	sa.sin_port = htons(1092);
	sa.sin_addr.s_addr = htonl(INADDR_ANY);

	if (bind(ssock, (struct sockaddr*) &sa, sizeof sa) == -1)
	{
		perror("bind failed");
		close(ssock);
		exit(EXIT_FAILURE);
	}

	if (listen(ssock, 10) == -1)
	{
		perror("listen failed");
		close(ssock);
		exit(EXIT_FAILURE);
	}

	for (;;)
	{
		int csock = accept(ssock, NULL, NULL);

		if (csock < 0)
		{
			perror("accept failed");
			close(ssock);
			exit(EXIT_FAILURE);
		}

		send(csock, "Hello, world!\r\n", 15, 0);

		close(csock);
	}

	close(ssock);

	return EXIT_SUCCESS;
}