SocketClient.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 res;
	int sock;
	char buffer[256];

	if (argc != 2)
	{
		printf("usage: %s <ip address>", argv[0]);
		return EXIT_FAILURE;
	}

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

	memset(&sa, 0, sizeof sa);
	sa.sin_family = AF_INET;
	sa.sin_port = htons(1092);
	res = inet_pton(AF_INET, argv[1], &sa.sin_addr);

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

	res = recv(sock, buffer, sizeof(buffer) - 1, 0);
	if (res > 0)
	{
		buffer[res] = 0;
		printf("%s", buffer);
	}

	close(sock);
	return EXIT_SUCCESS;
}