Added support for the CMake build system

git-svn-id: https://sfml.svn.sourceforge.net/svnroot/sfml/branches/sfml2@1550 4e206d99-4929-0410-ac5d-dfc041789085

examples/sockets/CMakeLists.txt

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+
+set(SRCROOT ${CMAKE_SOURCE_DIR}/examples/sockets)
+
+# all source files
+set(SRC ${SRCROOT}/Sockets.cpp
+        ${SRCROOT}/TCP.cpp
+        ${SRCROOT}/UDP.cpp)
+
+# define the sockets target
+sfml_add_example(sockets
+                 SOURCES ${SRC}
+                 DEPENDS sfml-network sfml-system)

examples/sockets/Sockets.cpp

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+
+////////////////////////////////////////////////////////////
+// Headers
+////////////////////////////////////////////////////////////
+#include <iostream>
+#include <cstdlib>
+
+
+void RunTcpServer(unsigned short Port);
+void RunTcpClient(unsigned short Port);
+void RunUdpServer(unsigned short Port);
+void RunUdpClient(unsigned short Port);
+
+
+////////////////////////////////////////////////////////////
+/// Entry point of application
+///
+/// \return Application exit code
+///
+////////////////////////////////////////////////////////////
+int main()
+{
+    // Choose an arbitrary port for opening sockets
+    const unsigned short port = 50001;
+
+    // TCP, UDP or connected UDP ?
+    char protocol;
+    std::cout << "Do you want to use TCP (t) or UDP (u) ? ";
+    std::cin  >> protocol;
+
+    // Client or server ?
+    char who;
+    std::cout << "Do you want to be a server (s) or a client (c) ? ";
+    std::cin  >> who;
+
+    if (protocol == 't')
+    {
+        // Test the TCP protocol
+        if (who == 's')
+            RunTcpServer(port);
+        else
+            RunTcpClient(port);
+    }
+    else
+    {
+        // Test the unconnected UDP protocol
+        if (who == 's')
+            RunUdpServer(port);
+        else
+            RunUdpClient(port);
+    }
+
+    // Wait until the user presses 'enter' key
+    std::cout << "Press enter to exit..." << std::endl;
+    std::cin.ignore(10000, '\n');
+    std::cin.ignore(10000, '\n');
+
+    return EXIT_SUCCESS;
+}

examples/sockets/TCP.cpp

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+
+////////////////////////////////////////////////////////////
+// Headers
+////////////////////////////////////////////////////////////
+#include <SFML/Network.hpp>
+#include <iostream>
+
+
+////////////////////////////////////////////////////////////
+/// Launch a server, wait for an incoming connection,
+/// send a message and wait for the answer.
+///
+////////////////////////////////////////////////////////////
+void RunTcpServer(unsigned short port)
+{
+    // Create a server socket to accept new connections
+    sf::TcpListener listener;
+
+    // Listen to the given port for incoming connections
+    if (listener.Listen(port) != sf::Socket::Done)
+        return;
+    std::cout << "Server is listening to port " << port << ", waiting for connections... " << std::endl;
+
+    // Wait for a connection
+    sf::TcpSocket socket;
+    if (listener.Accept(socket) != sf::Socket::Done)
+        return;
+    std::cout << "Client connected: " << socket.GetRemoteAddress() << std::endl;
+
+    // Send a message to the connected client
+    const char out[] = "Hi, I'm the server";
+    if (socket.Send(out, sizeof(out)) != sf::Socket::Done)
+        return;
+    std::cout << "Message sent to the client: \"" << out << "\"" << std::endl;
+
+    // Receive a message back from the client
+    char in[128];
+    std::size_t received;
+    if (socket.Receive(in, sizeof(in), received) != sf::Socket::Done)
+        return;
+    std::cout << "Answer received from the client: \"" << in << "\"" << std::endl;
+}
+
+
+////////////////////////////////////////////////////////////
+/// Create a client, connect it to a server, display the
+/// welcome message and send an answer.
+///
+////////////////////////////////////////////////////////////
+void RunTcpClient(unsigned short port)
+{
+    // Ask for the server address
+    sf::IpAddress server;
+    do
+    {
+        std::cout << "Type the address or name of the server to connect to: ";
+        std::cin  >> server;
+    }
+    while (server == sf::IpAddress::None);
+
+    // Create a socket for communicating with the server
+    sf::TcpSocket socket;
+
+    // Connect to the server
+    if (socket.Connect(server, port) != sf::Socket::Done)
+        return;
+    std::cout << "Connected to server " << server << std::endl;
+
+    // Receive a message from the server
+    char in[128];
+    std::size_t received;
+    if (socket.Receive(in, sizeof(in), received) != sf::Socket::Done)
+        return;
+    std::cout << "Message received from the server: \"" << in << "\"" << std::endl;
+
+    // Send an answer to the server
+    const char out[] = "Hi, I'm a client";
+    if (socket.Send(out, sizeof(out)) != sf::Socket::Done)
+        return;
+    std::cout << "Message sent to the server: \"" << out << "\"" << std::endl;
+}

examples/sockets/UDP.cpp

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+
+////////////////////////////////////////////////////////////
+// Headers
+////////////////////////////////////////////////////////////
+#include <SFML/Network.hpp>
+#include <iostream>
+
+
+////////////////////////////////////////////////////////////
+/// Launch a server, wait for a message, send an answer.
+///
+////////////////////////////////////////////////////////////
+void RunUdpServer(unsigned short port)
+{
+    // Create a socket to receive a message from anyone
+    sf::UdpSocket socket;
+
+    // Listen to messages on the specified port
+    if (socket.Bind(port) != sf::Socket::Done)
+        return;
+    std::cout << "Server is listening to port " << port << ", waiting for a message... " << std::endl;
+
+    // Wait for a message
+    char in[128];
+    std::size_t received;
+    sf::IpAddress sender;
+    unsigned short senderPort;
+    if (socket.Receive(in, sizeof(in), received, sender, senderPort) != sf::Socket::Done)
+        return;
+    std::cout << "Message received from client " << sender << ": \"" << in << "\"" << std::endl;
+
+    // Send an answer to the client
+    const char out[] = "Hi, I'm the server";
+    if (socket.Send(out, sizeof(out), sender, senderPort) != sf::Socket::Done)
+        return;
+    std::cout << "Message sent to the client: \"" << out << "\"" << std::endl;
+}
+
+
+////////////////////////////////////////////////////////////
+/// Send a message to the server, wait for the answer
+///
+////////////////////////////////////////////////////////////
+void RunUdpClient(unsigned short port)
+{
+    // Ask for the server address
+    sf::IpAddress server;
+    do
+    {
+        std::cout << "Type the address or name of the server to connect to: ";
+        std::cin  >> server;
+    }
+    while (server == sf::IpAddress::None);
+
+    // Create a socket for communicating with the server
+    sf::UdpSocket socket;
+
+    // Send a message to the server
+    const char out[] = "Hi, I'm a client";
+    if (socket.Send(out, sizeof(out), server, port) != sf::Socket::Done)
+        return;
+    std::cout << "Message sent to the server: \"" << out << "\"" << std::endl;
+
+    // Receive an answer from anyone (but most likely from the server)
+    char in[128];
+    std::size_t received;
+    sf::IpAddress sender;
+    unsigned short senderPort;
+    if (socket.Receive(in, sizeof(in), received, sender, senderPort) != sf::Socket::Done)
+        return;
+    std::cout << "Message received from " << sender << ": \"" << in << "\"" << std::endl;
+}