网络套接字库 [英] WebSocket Library

问题描述

我想在 Linux 上使用 C++ 访问 WebSocket API.我见过不同的库(例如 libwebsockets 或 websocketpp)，但我不确定应该使用哪个.我唯一需要做的就是连接到 API 并接收数据到一个字符串.所以我正在寻找一个非常基本和简单的解决方案，没有什么太复杂的.也许有人已经使用过 WebSocket 库?

I want to access a WebSocket API using C++ on Linux. I've seen different librarys (like libwebsockets or websocketpp), but I'm not sure which I should use. The only thing I need to do is connect to the API and receive data to a string. So I'm looking for a very basic and simple solution, nothing too complex. Maybe someone has already made experience with a WebSocket library?

推荐答案

对于高级 API，您可以使用 cpprest 库{它包装了 websocketpp}.

For a high-level API, you can use ws_client from the cpprest library {it wraps websocketpp}.

针对 echo 服务器 运行的示例应用程序:

A sample application that runs against the echo server:

#include <iostream>
#include <cpprest/ws_client.h>

using namespace std;
using namespace web;
using namespace web::websockets::client;

int main() {
  websocket_client client;
  client.connect("ws://echo.websocket.org").wait();

  websocket_outgoing_message out_msg;
  out_msg.set_utf8_message("test");
  client.send(out_msg).wait();

  client.receive().then([](websocket_incoming_message in_msg) {
    return in_msg.extract_string();
  }).then([](string body) {
    cout << body << endl; // test
  }).wait();

  client.close().wait();

  return 0;
}

这里使用了.wait()方法来等待任务，但是可以很容易地修改代码以异步方式进行I/O.

Here .wait() method is used to wait on tasks, however the code can be easily modified to do I/O in the asynchronous way.

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