restructure and add server/client example

server/src/server.cpp

@@ -0,0 +1,34 @@
+#include "TcpSocket.hpp"
+#include <iostream>
+
+using namespace std;
+
+// use pthread rw_lock to lock db so you can safy clone .db file
+
+int main()
+{
+  // When a new client connected:
+  TcpSocket::OnNewConnectionCallBack onNewConnection = [](int sock, sockaddr_in newSocketInfo)
+  {
+    std::cout << "new User" << std::endl;
+    char tempBuffer[AS_DEFAULT_BUFFER_SIZE + 1];
+    ssize_t messageLength;
+    while ((messageLength = TcpSocket::recvt(sock, tempBuffer, AS_DEFAULT_BUFFER_SIZE)) > 0)
+    {
+      tempBuffer[messageLength] = '\0';
+      TcpSocket::sendt(sock, tempBuffer, messageLength);
+    }
+    std::cout << "del USER" << std::endl;
+    TcpSocket::closet(sock);
+  };
+
+  // Bind the server to a port.
+  int err = TcpSocket::listent("0.0.0.0", 8888, onNewConnection);
+  if (err < 0)
+  {
+    printf("ERROR %d", err);
+    return 0;
+  }
+
+  return 0;
+}