Client.cpp

#include <sys/types.h>
#include <sys/socket.h>
#include <netinet/in.h>
#include <arpa/inet.h>
#include <unistd.h>
#include <netdb.h>
#include <sys/time.h>
#include<bits/stdc++.h>
using namespace std;
//Client side
int main(int argc, char *argv[])
{
    //we need 2 things: ip address and port number, in that order
    if(argc != 3)
    {
        cerr << "Usage: ip_address port" << endl; exit(0); 
    } //grab the IP address and port number 
    char *serverIp = argv[1]; int port = atoi(argv[2]); 
    //create a message buffer 
    char * msg=(char*)malloc(sizeof(char)*100);
    memset(msg,'\0',sizeof(char)*100); 
    //setup a socket and connection tools 
    struct hostent* host = gethostbyname(serverIp); 
    sockaddr_in sendSockAddr;   
    bzero((char*)&sendSockAddr, sizeof(sendSockAddr)); 
    sendSockAddr.sin_family = AF_INET; 
    sendSockAddr.sin_addr.s_addr = 
        inet_addr(inet_ntoa(*(struct in_addr*)*host->h_addr_list));
    sendSockAddr.sin_port = htons(port);
    int clientSd = socket(AF_INET, SOCK_STREAM, 0);

    int status = connect(clientSd,(sockaddr*) &sendSockAddr, sizeof(sendSockAddr));
    if(status < 0)
    {
        cout<<"Error connecting to socket!"<<endl; 
        
    }
    cout << "Connected to the server!" << endl;
    int bytesRead, bytesWritten = 0;
    struct timeval start1, end1;
    gettimeofday(&start1, NULL);
    while(1)
    {
        cout << ">";
        string data;
        getline(cin, data);
        
        memset(msg, '\0', sizeof(char)*100);
        strcpy(msg, data.c_str());
        if(data == "exit")
        {
            send(clientSd, msg, 5, 0);
            break;
        }
        bytesWritten += send(clientSd, msg, data.length() , 0);
        memset(msg, '\0', sizeof(char)*100);
        cout << "Awaiting server response..." << endl;
        
        bytesRead += recv(clientSd, msg, sizeof(char)*100, 0);
        if(strcmp(msg, "exit")==0)
        {
            cout << "Server has quit the session" << endl;
            break;
        }
        cout << "Server: " << msg << endl;
    }
    gettimeofday(&end1, NULL);
    close(clientSd);
    cout << "********Session********" << endl;
    cout << "Bytes written: " << bytesWritten << 
    " Bytes read: " << bytesRead << endl;
    cout << "Elapsed time: " << (end1.tv_sec- start1.tv_sec) 
      << " secs" << endl;
    cout << "Connection closed" << endl;
    return 0;    
}