diff --git a/projects/.vscode/settings.json b/projects/.vscode/settings.json
index 33c2443..7b1a728 100644
--- a/projects/.vscode/settings.json
+++ b/projects/.vscode/settings.json
@@ -4,6 +4,7 @@
     "editor.formatOnSave": true,
     "cmake.installPrefix": "${workspaceFolder}",
     "cmake.environment": {
-        "PATH": "${env:PATH};C:/mingw64/fltk-1.3.8-cmake/bin"
+        "PATH": "${env:PATH};C:/mingw64/fltk-1.3.8-cmake/bin",
+        "BOOST_ROOT": "C:/mingw64/boost-1.83.0"
     }
 }
\ No newline at end of file
diff --git a/projects/CMakeLists.txt b/projects/CMakeLists.txt
index 9dc5c6c..9078839 100644
--- a/projects/CMakeLists.txt
+++ b/projects/CMakeLists.txt
@@ -23,3 +23,5 @@ add_subdirectory(ch13/fibonacci_spiral)
 add_subdirectory(ch13/hexagon_tile)
 
 add_subdirectory(ch14/logic_shapes)
+
+add_subdirectory(messenger)
\ No newline at end of file
diff --git a/projects/messenger/CMakeLists.txt b/projects/messenger/CMakeLists.txt
new file mode 100644
index 0000000..5eb450c
--- /dev/null
+++ b/projects/messenger/CMakeLists.txt
@@ -0,0 +1,25 @@
+cmake_minimum_required(VERSION 3.20)
+
+set(TARGET "messenger")
+
+set(SOURCES
+    main.cpp
+)
+
+project(${TARGET} CXX)
+
+find_package(
+    Boost 1.83.0 EXACT REQUIRED
+    COMPONENTS headers
+)
+
+include_directories(SYSTEM ${Boost_INCLUDE_DIRS})
+
+add_executable(${TARGET} ${SOURCES})
+
+target_link_libraries(${TARGET} ${Boost_LIBRARIES})
+if(CMAKE_SYSTEM_NAME STREQUAL "Windows")
+    target_link_libraries(${TARGET} ws2_32)
+endif()
+
+install(TARGETS ${TARGET})
diff --git a/projects/messenger/ReadMe.md b/projects/messenger/ReadMe.md
new file mode 100644
index 0000000..abed7d0
--- /dev/null
+++ b/projects/messenger/ReadMe.md
@@ -0,0 +1,29 @@
+## Notes for Windows user
+
+### Download Boost libraries
+
+- use [direct link](https://boostorg.jfrog.io/artifactory/main/release/1.83.0/source/boost_1_83_0.7z)
+- or get latest version from the official [web-site](https://www.boost.org)
+
+
+### Unpack and install
+
+`Boost.Asio` is a header-only library. So, just unpack archive and install headers without building anything else.
+```sh
+$ cd /path/to/boost_1_83_0
+$ ./bootstrap.sh
+$ ./b2 --prefix=/absolute/path/to/boost-1.83.0 --with-headers variant=release -j4 install
+```
+
+
+### Configure VS Code
+
+Add to your workspace `settings.json` a hint where `CMake` should find Boost libraries.
+```json
+{
+    "cmake.environment": {
+        ...
+        "BOOST_ROOT": "/absolute/path/to/boost-1.83.0"
+    }
+}
+```
diff --git a/projects/messenger/main.cpp b/projects/messenger/main.cpp
new file mode 100644
index 0000000..3de1639
--- /dev/null
+++ b/projects/messenger/main.cpp
@@ -0,0 +1,114 @@
+// Simple TCP server-client console messenger
+
+#include <chrono>
+#include <exception>
+#include <iostream>
+#include <string>
+#include <thread>
+
+#include <boost/asio.hpp>
+
+using boost::asio::ip::tcp;
+
+using namespace std::chrono_literals;
+
+void run_as_server (unsigned port)
+{
+  boost::asio::io_context context;
+  tcp::acceptor acceptor(context, tcp::endpoint(tcp::v4(), port));
+
+  tcp::endpoint endpoint = acceptor.local_endpoint();
+  std::cout << "Server listening on " << endpoint.address().to_string()
+            << ":" << endpoint.port() << std::endl;
+
+  while (acceptor.is_open() && std::cin)
+  {
+    tcp::iostream stream;
+    boost::system::error_code ec;
+    acceptor.accept(*stream.rdbuf(), ec);
+    if (ec)
+    {
+      std::cerr << ec << std::endl;
+      std::this_thread::sleep_for(500ms);
+      continue;
+    }
+    auto ip = stream.rdbuf()->remote_endpoint().address().to_string();
+    std::cout << "Has connection from " << ip << "\n"
+              << "*** Chat starts ***" << std::endl;
+
+    while (stream && std::cin)
+    {
+      // receive message from client
+      std::string msg;
+      if (!std::getline(stream, msg))
+        break;
+
+      std::cout << "client: " << msg << std::endl;
+
+      // send responce to the client
+      std::cout << ">> " << std::flush;
+      if (!std::getline(std::cin, msg))
+        break;
+
+      stream << msg << std::endl;
+    }
+    std::cout << "*** Chat ends ***\n"
+              << "Waiting for a new connection..." << std::endl;
+  }
+  std::cout << "Bye, bye!" << std::endl;
+}
+
+void run_as_client (const std::string& server, unsigned port)
+{
+  tcp::iostream stream;
+  stream.connect(server, std::to_string(port));
+
+  if (!stream)
+  {
+    std::cerr << "Failed to connect to the server" << std::endl;
+    return;
+  }
+  std::cout << "*** Has connection. Chat starts ***" << std::endl;
+
+  while (stream && std::cin)
+  {
+    // send a message to the server
+    std::cout << ">> " << std::flush;
+    std::string msg;
+    if (!std::getline(std::cin, msg))
+      break;
+
+    stream << msg << std::endl;
+
+    // receive the server's response
+    if (!std::getline(stream, msg))
+      break;
+
+    std::cout << "server: " << msg << std::endl;
+  }
+  std::cout << "*** Chat ends ***\n"
+            << "Bye, bye!" << std::endl;
+}
+
+int main (int argc, char* argv[])
+try
+{
+  if (argc < 2 || 3 < argc)
+  {
+    std::cerr << "Usage: " << argv[0]
+              << " {\"server\"|\"localhost\"|ip} [port]" << std::endl;
+    return 2;
+  }
+  std::string host{argv[1]};
+  int port = (argc == 3) ? std::stoi(argv[2]) : 443;
+
+  if (host == "server")  // keyword to start as server
+    run_as_server(port);
+  else
+    run_as_client(host, port);
+}
+catch (std::exception& e)
+{
+  std::cerr << e.what() << std::endl;
+  return 1;
+}