Client can not connect to the server program in the LAN

Question

I have this class constructor in C++ :

SocketServer::SocketServer(int port)
{
    this->port=port;

WSAStartup(MAKEWORD(2,0), &WSAData);
server = socket(AF_INET, SOCK_STREAM, 0);

addr.sin_addr.s_addr = htonl(INADDR_ANY);
addr.sin_family = AF_INET;
addr.sin_port = htons(port);

bind(server, (SOCKADDR *)&addr, sizeof(addr));
}

The client application with port no. 5555 can't connect to the server program on the another pc within the LAN network. I have tried different port no. too. How to resolve this? The error message is :

Error while connecting

: This is client.cpp :

 #include <iostream>
#include <fstream>
#include "SocketClient.h"

using namespace std;

void onError(errorStruct *e)
{
    cout << e->message << endl;
}

int main()
{
    int port;
    cout<<"Enter a port : ";
    cin>>port;
    SocketClient client("127.0.0.1", port);
    client.setErrorCallback(onError);
   client.connect();

string str;
while(1)
{
    cout << ">";
    getline(cin, str);
    client.send(str);
}

client.close();
}

Edit 2 : SocketClient

SocketClient::SocketClient(std::string ip, int port)
{
    this->ip=ip;
    this->port=port;
    this->connected=false;
    initParameters();
    initSocket(ip, port);
}

void SocketClient::initSocket(std::string ip, int port)
{
    WSAStartup(MAKEWORD(2,0), &WSAData);
    this->socket = WINSOCK_API_LINKAGE::socket(AF_INET, SOCK_STREAM, 0);
    this->addr.sin_addr.s_addr = inet_addr(ip.c_str());
    this->addr.sin_family = AF_INET;
    this->addr.sin_port = htons(port);
}

void SocketClient::initParameters()
{
    this->bytes_for_package_size=16;
    this->size_of_packages=2048;
    this->callback=NULL;
    this->callbackError=NULL;
    this->thread_started=false;
    this->errorWhileReceiving=false;
    this->errorWhileSending=false;
}

Answer 1

I guess your system works fine if the Server and Client are both on the same machine?

In your client code you have the line

SocketClient client("127.0.0.1", port);

You haven't given the code for SocketClient, but I guess that this is the address and port of the server? If so, then your problem is that you need to give the IP address of the server: 127.0.0.1 is localhost, or this computer.