TCP_Client.cpp

This is an example for a very simple TCP client application.

Output when started without a server running: "Connection Refused"

Output when the TCP_Server example is running:

Received data from server: The quick brown fox jumps over the lazy dog

#include <simple_socket/TCPSocket.h>
 
#include <array>
#include <iostream>
 
int main()
{
    try {
 
    NET::TCPSocket client_socket;
    // Connect to local TCP Server example
    client_socket.connect("127.0.0.1", 47777);
 
    std::array<char, 256> buffer{};
    std::cout << "Received data from server: ";
 
    while(true)
    {
        // TCP is a byte stream: one receive call is not guaranteed
        // to return everything the peer sent
        int received = client_socket.timedReceive(buffer.data(), buffer.size(), 5000);
        if (received > 0)
        {
            // Use the returned byte count
            // Received network data is not necessarily null terminated
            std::cout.write(buffer.data(), received);
            continue;
        }
 
        if (client_socket.peerDisconnected())
        {
            // Graceful EOF from the server
            break;
        }
 
        // timedReceive() also returns 0 when its timeout expires
        std::cerr << "\nTimed out waiting for server data." << std::endl;
 
        return 1;
    }
 
    std::cout << std::endl;
    // No explicit close is necessary
 
    }
    catch (const NET::SocketException& e)
    {
        std::cerr << e.what() << std::endl;
        return 1;
    }
 
    return 0;
}