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include <string.h>

include <unistd.h>

include <stdio.h>

include <netdb.h>

include <sys/types.h>

include <sys/socket.h>

include <netinet/in.h>

include <iostream>

include <fstream>

include <strings.h>

include <stdlib.h>

include <string>

include <pthread.h>

using namespace std;

void *task1(void *);

static int connFd;

int main(int argc, char* argv[]) { int pId, portNo, listenFd; socklen_t len; //store size of the address bool loop = false; struct sockaddr_in svrAdd, clntAdd;

pthread_t threadA[3];

if (argc < 2)
{
    cerr << "Syntam : ./server <port>" << endl;
    return 0;
}

portNo = atoi(argv[1]);

if((portNo > 65535) || (portNo < 2000))
{
    cerr << "Please enter a port number between 2000 - 65535" << endl;
    return 0;
}

//create socket
listenFd = socket(AF_INET, SOCK_STREAM, 0);

if(listenFd < 0)
{
    cerr << "Cannot open socket" << endl;
    return 0;
}

bzero((char*) &svrAdd, sizeof(svrAdd));

svrAdd.sin_family = AF_INET;
svrAdd.sin_addr.s_addr = INADDR_ANY;
svrAdd.sin_port = htons(portNo);

//bind socket
if(bind(listenFd, (struct sockaddr *)&svrAdd, sizeof(svrAdd)) < 0)
{
    cerr << "Cannot bind" << endl;
    return 0;
}

listen(listenFd, 5);

len = sizeof(clntAdd);

int noThread = 0;

while (noThread < 3)
{
    cout << "Listening" << endl;

    //this is where client connects. svr will hang in this mode until client conn
    connFd = accept(listenFd, (struct sockaddr *)&clntAdd, &len);

    if (connFd < 0)
    {
        cerr << "Cannot accept connection" << endl;
        return 0;
    }
    else
    {
        cout << "Connection successful" << endl;
    }

    pthread_create(&threadA[noThread], NULL, task1, NULL); 

    noThread++;
}

for(int i = 0; i < 3; i++)
{
    pthread_join(threadA[i], NULL);
}

}

void *task1 (void *dummyPt) { cout << "Thread No: " << pthread_self() << endl; char test[300]; bzero(test, 301); bool loop = false; while(!loop) {
bzero(test, 301);

    read(connFd, test, 300);

    string tester (test);
    cout << tester << endl;

    if(tester == "ciao") {
        cout << "Prova" << endl;
        write(connFd , "Prova" , strlen("Prova"));
    }
    if(tester == "exit") {
        break;
    }
}
cout << "\nClosing thread and conn" << endl;
close(connFd);

}