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

using namespace std;

extern int errno;

int port;

int main(int argc, char *argv[])
{
    int sd;
    struct sockaddr_in server;
    string input;
    string answer;
    int n;
    char buf[500];

    if(argc!=3)
    {
        cout<<"Sintaxa: "<<argv[0]<<"<adresa_server><port>\n";
        return -1;
    }

    port = atoi(argv[2]);//ascii to integer

//---->socket()
    if((sd = socket(AF_INET, SOCK_STREAM, 0)) == -1)
    {
        perror("Socket() error.\n");
        return errno;
    }

    server.sin_family = AF_INET;
    server.sin_addr.s_addr = inet_addr(argv[1]);
    server.sin_port = htons(port); //hostshort to network byte order

//---->connect()
    if(connect(sd, (struct sockaddr *) &server, sizeof(struct sockaddr)) == -1)
    {
        perror("[client]Connect() error.\n");
        return errno;
    }

    bzero(buf, 500);
    answer.empty();
    input.clear();

    cout<<"[client]Input your name: "<<flush;
    getline(std::cin, input);
    cout<<input;
    if(n = (send(sd, input.data(), input.size(), 0))<0)
    {
        perror("[client]Write to server error.\n");
        return errno;
    }

    while((n = recv(sd, buf, sizeof(buf), 0))>0)
    {
        answer.append(buf, buf+n);
    }
    if(n<0)
    {
        perror("[client]Read from server error.\n");
        return errno;
    }

    cout<<"[client]Received message is: "<<answer<<endl;

    close(sd);
}