使用套接字的MFC应用程序似乎很奇怪 [英] A MFC application that uses socket seems strange

问题描述

以下是服务器应用程序的消息接收功能：

Here is the message receiving function of the Server Application:

void CServerDlg::ReceiveData(CSocket & socket)
{
	char bufferdata[BUFFERSIZE];						
	int len = socket.Receive(bufferdata,BUFFERSIZE);	
	if (len != -1)								
	{
		bufferdata[len] = '\0';							
		POSITION pos = m_socketlist.GetHeadPosition();	
		std::cout << len ;
		std::cout << "got";
		std::cout << bufferdata << '\n';
		while (pos != NULL)							
		{
			CClientSocket* socket = (CClientSocket*)m_socketlist.GetNext(pos);
			if (socket != NULL) {						
				socket->Send(bufferdata, len);		
			}
		}
	}

}

我只想打印从中获取的文本客户端应用程序在控制台窗口中，但它不显示文本，只是一个正确的LEN号码和一个得到。

但令我困惑的是，客户端应用程序接收正确的文字!!多么奇怪!!!!



我的尝试：



我试图把

[std :: cout<< len;

std :: cout<< 得到;

std :: cout<< bufferdata<< '\ n';]

在while {...}下，以避免它没有完全收到文本的情况，但问题仍然存在。请告诉我该怎么办呢？

I just want to print the text it gets from the Client Application in the console window, but it dose not show the text, but just a right number of the LEN, and a "got".
But what confuses me is, however, the Client Application receive the text rightly!!How strange it is!!!!

What I have tried:

I've tried to put
[std::cout << len ;
std::cout << "got";
std::cout << bufferdata << '\n';]
under the while{...}, to avoid the case that it didn't receive the text completely, but the problem still exist. Please tell me how can I do for this?

推荐答案

查看实际数据的简单有效方法是使用调试器。

另一种方法可能是显示每个接收字节的十六进制表示。

A simple ed effective way to see the actual data is using the debugger.
Another approach could be showing the hexadecimal representation of each received byte.

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