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1/*-----------------------------------
2   Project: CS 270 Project 5: A Small Server
3   SubName: Small Set
4   Authors: Brad Stephenson & Colton Thompson
5   Date: 4/12/18
6   Version: 1.0
7-----------------------------------
8*/
9/* General Application Requirements:
10               -Take command line parameters: MachineName, port, and SecretKey
11                  followed by specifics of the command
12                      -MachineName: The DNS name ie.(george.netlab.uky.edu) or the
13                          IP address ie.(128.163.146.12) of the maching where the 
14                          server is running
15                      -port: the TCP port number where the server is listening
16                      -SecretKey: the number to use as the SecretKey when 
17                          communicating with the server
18              *Value can be any sequence of characters not exceedint 100 bytes
19 */
20 
21/* Small Set Requirements:
22                -Format: smallSet MachineName port SecretKey variableName value
23                -Procedure:
24                        -takes a variable name and a value
25                        -server sets that variable(internally to the server) to 
26                            that value
27                        -the client prints nothing unless the command fails in 
28                            which case it prints "failed"
29 */
30
31
32#include <unistd.h> //sleep
33#include "csapp.h"
34
35/*
36 * echoclient.c - An echo client
37 */
38/* $begin echoclientmain */
39
40int EchoClient(int argc, char **argv) 
41{
42    int clientfd, port;
43    char *host, buf[MAXLINE];
44    rio_t rio;
45
46    if (argc != 3) {
47	fprintf(stderr, "usage: %s <host> <port>\n", argv[0]);
48	exit(0);
49    }
50    host = argv[1];
51    port = atoi(argv[2]);
52
53    clientfd = Open_clientfd(host, port);
54    Rio_readinitb(&rio, clientfd);
55
56    /*added fill buf*/
57    buf[0] = '1'; buf[1] = '2'; buf[2] = '3';
58
59   
60    Rio_writen(clientfd, buf, strlen(buf));
61   
62    //if (FD_ISSET(clientfd, &set)
63
64    char BUF[3];
65    Rio_readn(clientfd, BUF, 3); 	//HANG at this line
66    printf("2\n");	//test
67    printf("CLIENT BUFFER: %c %c %c\n", BUF[0], BUF[1], BUF[2]);
68 
69
70    Close(clientfd); //line:netp:echoclient:close
71    sleep(1); //waits for the server to finish
72    exit(0);
73}
74/* $end echoclientmain */
75
76
77int main(int argc, char **argv){
78	printf("Start\n");
79	EchoClient(argc, argv);
80	printf("End\n");
81	return 0;
82}