如何调试 C++ REST SDK (Casablanca) 异常？

如何解决如何调试 C++ REST SDK (Casablanca) 异常？

此代码旨在连接到 websocket 服务器并发送文本字符串。

当我在 Visual Studio 2019 IDE 中运行它时，它会在调用 Exception Thrown - casablanca_test.exe has triggered a breakpoint 后抛出一个措辞含糊的异常 (client.send())。

我认为我在使用 send() 时做错了 - 如果我忽略它，连接似乎可以正确打开和关闭 - 但我不知道是什么。我该如何开始调试？

// This is a complete program,but assumes the cpprestsdk package is installed,// which in turn requires OpenSSL

#include <iostream>

#include <cpprest/ws_client.h>

using namespace utility;                    // Common utilities like string conversions
using namespace web;                        // Common features like URIs.
using namespace web::web_sockets::client;     // WebSockets client

int main()
{
    websocket_client client;

    client.connect(U("wss://echo.websocket.org")).then([]()
        {
            OutputDebugStringA("returned from .connect()\n");
        });

    OutputDebugStringA("After client.connect()\n"); // <== this is fine

    websocket_outgoing_message msg;
    msg.set_utf8_message("hello");
    client.send(msg).then([]()
        {
            OutputDebugStringA("returned from .send()\n");
        });

    OutputDebugStringA("After client.send()\n"); // <== exception reported here

    client.close().then([]() 
        { 
            OutputDebugStringA("returned from .close()\n"); 
        });
}

这是异常消息：