什么是简单的 C 或 C++ TCP 服务器和客户端示例? [英] What is a simple C or C++ TCP server and client example?

问题描述

我需要快速实现一个非常小的 C 或 C++ TCP 服务器/客户端解决方案.这只是将字节数组从一台计算机传输到另一台计算机 - 不需要可扩展/过于复杂.越简单越好.如果可以的话，又快又脏.

I need to quickly implement a very small C or C++ TCP server/client solution. This is simply to transfer literally an array of bytes from one computer to another - doesn't need to be scalable / over-complicated. The simpler the better. Quick and dirty if you can.

我尝试使用本教程中的代码，但无法在 Linux 中使用 g++ 构建它:http://www.linuxhowtos.org/C_C++/socket.htm

I tried to use the code from this tutorial, but I couldn't get it to build using g++ in Linux: http://www.linuxhowtos.org/C_C++/socket.htm

如果可能，我想避免使用 3rd 方库，因为我运行它的系统受到很大限制.这必须是 C 或 C++，因为现有应用程序已经实现.

If possible, I'd like to avoid 3rd party libraries, as the system I'm running this on is quite restricted. This must be C or C++ as the existing application is already implemented.

感谢 emg-2 的回答，我使用以下步骤使上述代码示例与 C++ 兼容:

Thanks to emg-2's answer, I managed to make the above mentioned code sample compatible with C++ using the following steps:

将这些标头添加到客户端和服务器:

Add these headers to both client and server:

#include <cstdlib>
#include <cstring>
#include <unistd.h>

在 server.c 中，将 clilen 的类型更改为 socklen_t.

In server.c, change the type of clilen to socklen_t.

int sockfd, newsockfd, portno/*, clilen*/;
socklen_t clilen;

在 client.c 中，更改以下行:

In client.c, change the following line:

if (connect(sockfd,&serv_addr,sizeof(serv_addr)) < 0) { ... }

致:

if (connect(sockfd,(const sockaddr*)&serv_addr,sizeof(serv_addr)) < 0)

推荐答案

我用过 Beej's过去的网络编程指南.它是用 C 语言编写的，而不是 C++，但是例子很好.直接转到第 6 节，了解简单的客户端和服务器示例程序.

I've used Beej's Guide to Network Programming in the past. It's in C, not C++, but the examples are good. Go directly to section 6 for the simple client and server example programs.

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