/*
 *  simple_client_simple.c
 *  a stream socket client demo
 *
 *  Created by Angelos Stavrou on 9/16/08.
 *  Copyright 2008 George Mason University. All rights reserved.
 *
 */

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

#define PORT 15000 // the port client will be connecting to 

#define MAXDATASIZE 1400 // max number of bytes we can get at once 

int main(int argc, char *argv[])
{
	int sockfd, numbytes; // socket descriptor and number of bytes.  
	char buf[MAXDATASIZE];
	struct hostent *remotehost;
	struct sockaddr_in remote_addr; // connector's address information 
	
	if (argc != 3) {
		fprintf(stderr,"usage: socket_client_simple hostname message\n");
		exit(1);
	}
	
	if ((remotehost=gethostbyname(argv[1])) == NULL) {  // get the host info from the command line
		perror("gethostbyname");
		exit(1);
	}
	
	if ((sockfd = socket(AF_INET, SOCK_STREAM, 0)) == -1) {
		perror("socket");
		exit(1);
	}
	
	remote_addr.sin_family = AF_INET;    // host byte order 
	remote_addr.sin_port = htons(PORT);  // short, network byte order 
	remote_addr.sin_addr = *((struct in_addr *)remotehost->h_addr);
	memset(remote_addr.sin_zero, '\0', sizeof remote_addr.sin_zero);
	
	if (connect(sockfd, (struct sockaddr *)&remote_addr, sizeof remote_addr) == -1) {
		perror("connect");
		exit(1);
	}

	if (send(sockfd, argv[2], sizeof(argv[2]), 0) == -1)
		perror("send");
	
	if ((numbytes=recv(sockfd, buf, MAXDATASIZE-1, 0)) == -1) {
		perror("recv");
		exit(1);
	}
	
	buf[numbytes] = '\0';
	
	printf("Received: %s",buf);
	
	close(sockfd);
	
	return 0;
}