Question

这是我的第一个问题：D

我必须从我的个人计算机（Linux-Red Hat）向服务器（机器人控制器）发送一些命令。我看到控制器有一个以太网协议，允许使用telnet通信发送命令。

我的问题：是否可以使用python进行telnet连接，发送命令和读取输出？如果是的话，你能帮助我吗？

谢谢。

Answer 1

在python中，他们有telnetlib，它允许telnet通信。我非常确定这是你正在寻找的东西。您可以在https://docs.python.org/2/library/telnetlib.html找到文档。这是登录Windows服务器并获取目录列表的基本方法（由上述文档页面提供）

#include <memory>
#include <Windows.h>
#include <iostream>

//Prevent the memcpy from being optimized out of the for loop
_declspec(noinline) void MemoryCopy(void *destinationMemoryBlock, void *sourceMemoryBlock, size_t size)
{
    memcpy(destinationMemoryBlock, sourceMemoryBlock, size);
}

int main()
{
    const int SIZE_OF_BLOCKS = 25000000;
    const int NUMBER_ITERATIONS = 100;
    void* sourceMemoryBlock = malloc(SIZE_OF_BLOCKS);
    void* destinationMemoryBlock = malloc(SIZE_OF_BLOCKS);
    LARGE_INTEGER Frequency;
    QueryPerformanceFrequency(&Frequency);
    while (true)
    {
        LONGLONG total = 0;
        LONGLONG max = 0;
        LARGE_INTEGER StartingTime, EndingTime, ElapsedMicroseconds;
        for (int i = 0; i < NUMBER_ITERATIONS; ++i)
        {
            QueryPerformanceCounter(&StartingTime);
            MemoryCopy(destinationMemoryBlock, sourceMemoryBlock, SIZE_OF_BLOCKS);
            QueryPerformanceCounter(&EndingTime);
            ElapsedMicroseconds.QuadPart = EndingTime.QuadPart - StartingTime.QuadPart;
            ElapsedMicroseconds.QuadPart *= 1000000;
            ElapsedMicroseconds.QuadPart /= Frequency.QuadPart;
            total += ElapsedMicroseconds.QuadPart;
            max = max(ElapsedMicroseconds.QuadPart, max);
        }
        std::cout << "Average is " << total*1.0 / NUMBER_ITERATIONS / 1000.0 << "ms" << std::endl;
        std::cout << "Max is " << max / 1000.0 << "ms" << std::endl;
    }
    getchar();
}

使用python进行telnet通信

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