#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>

#include <arpa/inet.h>

#include <string>

#include <iostream>

using namespace std;

#define MAXBUFLEN 10000

#define AWS_TCP_PORT 24472 // the port client will be connecting to

int main(int argc, char *argv[])

{

printf("The client is up and running.\n");

// need below for socket

int sockfd, numbytes;

char buf[MAXBUFLEN];

struct addrinfo hints, *servinfo, *p;

int rv;

if (argc != 4)

{

fprintf(stderr, "Input error!\n");

exit(1);

}

memset(&hints, 0, sizeof hints);

hints.ai_family = AF_UNSPEC;

hints.ai_socktype = SOCK_STREAM;

// connect to aws

if ((rv = getaddrinfo("127.0.0.1", to_string(AWS_TCP_PORT).c_str(), &hints, &servinfo)) != 0)

{

fprintf(stderr, "getaddrinfo: %s\n", gai_strerror(rv));

return 1;

}

// loop through all the results and connect to the first we can

for (p = servinfo; p != NULL; p = p->ai_next)

{

if ((sockfd = socket(p->ai_family, p->ai_socktype,

p->ai_protocol)) == -1)

{

perror("client: socket");

continue;

}

if (connect(sockfd, p->ai_addr, p->ai_addrlen) == -1)

{

perror("client: connect");

close(sockfd);

continue;

}

break;

}

if (p == NULL)

{

fprintf(stderr, "client: failed to connect\n");

return 2;

}

freeaddrinfo(servinfo); // all done with this structure

string map(argv[1]);

string src(argv[2]);

string fsize(argv[3]);

// send to aws

if (send(sockfd, (map + " " + src + " " + fsize).c_str(), MAXBUFLEN, 0) == -1)

perror("send");

struct sockaddr getPort;

socklen_t len = sizeof(getPort);

getsockname(sockfd, &getPort, &len);

printf("The client has sent query to AWS using TCP over port %d: start vertex %s; map %s; file size %s.\n", ((struct sockaddr_in *)&getPort)->sin_port, argv[2], argv[1], argv[3]);

// receive data from aws

if ((numbytes = recv(sockfd, buf, MAXBUFLEN - 1, 0)) == -1)

{

perror("recv");

exit(1);

}

printf("The client has received results from AWS:\n");

printf("-----------------------------------------------------\n");

printf("Destination\tMin Length\tTt\tTp\tDelay\n");

printf("-----------------------------------------------------\n");

buf[numbytes] = '\0';

cout << buf;

printf("-----------------------------------------------------\n");

close(sockfd); // close socket

return 0;

}