asio网络编程 tcp、udp、rpc

轻量级的tcp、udp、rpc库，为了简化socket程序编写，基于asio。
提供了轻量级的、方便易用的rpc功能，基于rpc_core。

特性

• TCP/UDP支持，依赖于：asio
• RPC支持，依赖于：rpc_core
• 基于UDP组播的服务发现
• 支持IPv6和SSL（使用OpenSSL）
• 支持域套接字和rpc
• 全面的单元测试
• 支持串口
• 自动重连

仓库地址

https://github.com/shuai132/asio_net

asio_net

a tiny Async TCP/UDP/RPC library based on asio
and rpc_core

Features

• Header-Only
• TCP/UDP support, rely on: asio
• RPC support, rely on: rpc_core
• Service discovery based on UDP multicast
• Support IPv6 and SSL (with OpenSSL)
• Support domain socket and rpc
• Support serial port
• Comprehensive unittests
• Automatic reconnection

Options:

• TCP can be configured to automatically handle the problem of packet fragmentation to support the transmission of
  complete data packets.

• Supports setting the maximum packet length, and will automatically disconnect if exceeded.

Requirements

• C++14
• asio

Usage

The following are examples of using each module. For complete unit tests,
please refer to the source code: test

• TCP

  You can enable automatic handling of packet fragmentation using tcp_config.
  Subsequent send and receive will be complete data packets.

  By default, this feature is disabled.

  // echo server
  asio::io_context context;
  tcp_server server(context, PORT/*, tcp_config*/);
  server.on_session = [](const std::weak_ptr& ws) {
    auto session = ws.lock();
    session->on_close = [] {
    };
    session->on_data = [ws](std::string data) {
      ws.lock()->send(std::move(data));
    };
  };
  server.start(true);

  // echo client
  asio::io_context context;
  tcp_client client(context/*, tcp_config*/);

  client.on_data = [](const std::string& data) {
  };
  client.on_close = [] {
  };
  client.open("localhost", PORT);
  client.run();

• UDP

  // server
  asio::io_context context;
  udp_server server(context, PORT);
  server.on_data = [](uint8_t* data, size_t size, const udp::endpoint& from) {
  };
  server.start();

  // client
  asio::io_context context;
  udp_client client(context);
  auto endpoint = udp::endpoint(asio::ip::address_v4::from_string("127.0.0.1"), PORT);
  client.send_to("hello", endpoint);
  context.run();

• RPC

  rpc based on tcp and rpc_core, and also support ipv6 and ssl.
  more usages, see rpc.cpp and rpc_2.cpp

  // server
  asio::io_context context;
  rpc_server server(context, PORT/*, rpc_config*/);
  server.on_session = [](const std::weak_ptr& rs) {
    auto session = rs.lock();
    session->on_close = [] {
    };
    session->rpc->subscribe("cmd", [](const std::string& data) -> std::string {
      return "world";
    });
  };
  server.start(true);

  // client
  asio::io_context context;
  rpc_client client(context/*, rpc_config*/);
  client.on_open = [](const std::shared_ptr& rpc) {
    rpc->cmd("cmd")
        ->msg(std::string("hello"))
        ->rsp([](const std::string& data) {
        })
        ->call();
  };
  client.on_close = [] {
  };
  client.open("localhost", PORT);
  client.run();

• Server Discovery

  // receiver
  asio::io_context context;
  server_discovery::receiver receiver(context, [](const std::string& name, const std::string& message) {
    printf("receive: name: %s, message: %s\n", name.c_str(), message.c_str());
  });
  context.run();

  // sender
  asio::io_context context;
  server_discovery::sender sender_ip(context, "ip", "message");
  context.run();

Links

• RPC library for MCU

  most MCU not support asio, there is a library can be ported easily: esp_rpc