javascript - C++與nodejs的互動中出現的問題及實戰程式碼

class TCP_CLIENT : public IConnectionHandler
{
    bool isdone;
public:
    TCP_CLIENT(const char* host, int port, const char* data, Isolate *isolate, const FunctionCallbackInfo<Value> args)
    {
        this->host_ = host;
        this->port_ = port;
        this->request_data_ = data;
        isolate_ = isolate;
    }
    ~TCP_CLIENT()
    {
        std::cout << "~tcp_client" << std::endl;
    }
    
    /*callback handler implement回调接口实现*/

    //建立连接的回调
    void on_established(IBaseConnection*  conn) override_final
    {
        std::cout << "Connect Successful" << std::endl;
        this->send_request(conn);
    }

    。。。。。。。。。
    
    //服务器响应得到数据的回调
    int on_read(int err, int bytes_transfered, IBaseConnection* conn, SharedBufferPtr buffer) override_final
    {

        if (err == 0 && bytes_transfered)
        {
            std::cout << "In read, thread id is ----" << GetCurrentThreadId() << std::endl;
            buffer->erase(bytes_transfered);
            if (conn->is_established())
            {
                conn->stop();
            }
                
        }
        return 0;
    }

    //发送数据的回调
    void on_write(int err, int bytes_transferred, IBaseConnection* conn, SharedBufferPtr buffer) override_final
    {
        if (err == 0 && bytes_transferred > 0)
        {
            std::cout << "Send Request Successful------>" << buffer->length() << std::endl;
            buffer->erase(bytes_transferred);
        }
        else {}
    }

private:
    const char* host_;
    int port_;
    const char* request_data_;
    http::ParserPtr response_parser_;
    Isolate *isolate_;
};


const char* ToCString(const v8::String::Utf8Value& value)
{
    return *value ? *value : "<string conversion failed>";
}

void entry(const FunctionCallbackInfo<Value>& args)
{
    std::cout << "In entry, process id is ----" << GetCurrentProcessId() << std::endl;
    std::cout << "In entry, thread id is ----" << GetCurrentThreadId() << std::endl;

    //启动一个线程执行tcp连接
    global_http_transfer_context_pool.run();

    Isolate* isolate = args.GetIsolate();

    if (args.Length() != 2)
    {
        isolate->ThrowException(Exception::TypeError(v8::String::NewFromUtf8(isolate, "参数数量必须为二")));
        return;
    }
    if (!args[0]->IsString() || !args[1]->IsNumber())
    {
        isolate->ThrowException(Exception::TypeError(
            v8::String::NewFromUtf8(isolate, "参数类型错误")
        ));
    }

    v8::String::Utf8Value str_temp(args[0]);
    const char* data = ToCString(str_temp);

    TCP_CLIENT* tcp_client;
    if (args[1]->NumberValue() == 1)
    {
        tcp_client = new TCP_CLIENT(cms_host, cms_port, data, isolate, args);
        tcp_client->perform(1);

    }
    else
    {
        tcp_client = new TCP_CLIENT(liteapp_host, liteapp_port, data, isolate, args);
        tcp_client->perform(0);
    }
}

void Init(Local<Object> exports)
{
    NODE_SET_METHOD(exports, "http_request", entry);
}

NODE_MODULE(NODE_GYP_MODULE_NAME, Init)