Client file from class

client.c

#include "csapp.h" 

/* usage: ./echoclient host port */
int main(int argc, char **argv)
{ 
	int clientfd, port; 
	char *host, buf[MAXLINE]; 
	rio_t rio; 
	host = argv[1];
	port = atoi(argv[2]); 
	clientfd = Open_clientfd(host, port);
	Rio_readinitb(&rio, clientfd); 
	printf("Enter message:"); fflush(stdout);
	while (Fgets(buf, MAXLINE, stdin) !=
			NULL) { 
		Rio_writen(clientfd, buf, strlen(buf)); 
		Rio_readlineb(&rio, buf, MAXLINE); 
		printf("Echo:");
		Fputs(buf, stdout); 
		printf("Enter message:");
		fflush(stdout);
	} 
	Close(clientfd); 
	exit(0); 
}