C ++套接字 - 我只能发送字符？ [英] C++ Sockets - Can i only send characters?

问题描述

我使用带有win32窗口的同步套接字，并使用send（）和recv（）函数通过互联网TCP发送数据;

I'm using synchronised sockets with a win32 window, and using the send() and recv() function to send data over internet TCP;

what i' m想知道，我将如何发送一些整数，甚至我自己的类/结构在tcp套接字？因为send（）函数只允许我发送字符。

what i'm wondering, how would i send some integers or even my own class/structure over the tcp socket? because the send() function only lets me send characters.

我只需要发送字符，然后可以使用atoi（）将它们转换为整数。或者如果我想发送一个类结构，我会发送很多字符串，然后将它们一个接一个地放入变量。

Would i just have to send characters and then maybe convert them to integer with atoi()? or if i wanted to send a class structure, would i send many strings over and then put them in the variables.. one by one.

推荐答案

它不是在文本意义上发送字符 - 它发送连续的字节数组，它引用使用char *。你可以指向这种方式的任何值类型的字节，所以如果你想发送一个int，

It isn't sending characters in the textual sense - it's sending contiguous arrays of bytes, which it refers to using a char*. You can point to the bytes of any value type this way, so if you wanted to send an int,

int A = 5;
const char* pBytesOfA = (const char*)&A;
int lengthOfBytes = sizeof(A);

send(socket, pBytesOfA, lengthOfBytes, flags);

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