Why im not receving the full string when write blankspace between words , but the opposite when I use character , using C++ chat networking library?

The Code dont print the Blankspace when I type it between words in the message getline it only print first word or last letter but if i write between words any character like -./\_ it will print the full message , Example :

-Without character:
I Write : Hi how Are you
I Recive : Hi
*******
-With character:
I Write : How-how-Are-you?
I Recive : How-how-Are-you?
********

<pre>#include <iostream>
#include <SFML/Network.hpp>
using namespace std;
void server() {
    sf::TcpListener listener;
    listener.listen(5301);
    sf::TcpSocket socket;
    listener.accept(socket);
    cout << "New client connected: " << socket.getRemoteAddress() << endl;
    while(true){
		char buffer[1024];
		size_t received = 0;
		socket.receive(buffer, sizeof(buffer), received);
		cout << "Client : " << buffer << endl;
		string message;
		cout << "Enter Message  :";
		cin >> message;
		socket.send(message.c_str(), message.size() + 1);
		}
}
void client() {
    string consoleInput;
    cout << "Input server address: " << endl;
    cin >> consoleInput;
    sf::TcpSocket socket;
    socket.connect(consoleInput, 5301);
    while(true){
		string message;
		cout << ": ";
		cin >> message;
		socket.send(message.c_str(), message.size() + 1);
		char buffer[1024];
		size_t received = 0;
		socket.receive(buffer, sizeof(buffer), received);
		cout << "Server:" << buffer << endl;
		}
}
int main()
{
    cout << "Client[c] or server[s]? " << endl;
    string consoleInput;
    cin >> consoleInput;
    if (consoleInput == "c")
    {
        client();
    }
    else if (consoleInput == "s")
    {
        server();
    }

    return 0;
}