获取手机端app传输的地址

越来越多的内容转移到移动端,而且很多仅有移动端,想要保存点东西下来的时候,连个地址都看不到了。

把电脑做为热点,让手机连接到热点上,流量就会经过电脑,打开wireshark可以抓取,这是《计算机网络》课程的一个实践作业。

一般地址是酱紫的:

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痛苦过后的世界原来如此美丽

by
Logogogo 评论 数学物理方法

练乾坤大挪移前学好九阳神功;做论文前学好数学。
求学时代好好学习数学,毕业之后,数学能够不忘记就很不错了,还能精进的很少了。


 这是我写的第一篇书评(划掉,不是我写的,转的,作者在开头),我从来没有想过,是写给这样的一本书的。这的确是我迄今最仔细读过的一本书。
    在上高一的时候,我就买过一本《数学物理方法》,纯粹出于对书名的崇拜,那还是四川大学出版的那一本。当然,那时的我只能看到Riemann plane就晕得差不多了。那的确是我第一次听说有这样的书存在,数学和物理,好神奇。

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Risk of downloadhelper

Downloadhelper is a good browser extension for downloading media. It is useful for obtaining addresses of targeted objects. However, I realized that there may be some risks of this kind of tools. The way it works is based on packet capture & analysis during network communication. If the communication is not encrypted, there may be privacy risks. The tool may be able to see what you receive and send. Therefore, it would be better to capture the address by yourself (see Video Streaming & Thunder, VanDyke, NetAnts, etc.); or use the tool on a computer without any private data——at least without any private data communication via browser.

Video Streaming & Thunder, VanDyke, NetAnts, etc.

How long haven’t you used Thunder? It was so popular on PC, like Tencent. Tencent is still there, while Thunder is gone. Now most on line videos are provided in streaming way.

FFMPEG.exe is a tool to download them. It runs in command line:
ffmpeg -i http://***/***.m3u8 “***.mp4”
And there is a better tool to do such streaming, which is N_m3u8DL-CLI_v2.9.7.exe

How to find the streaming address? Press F12 when you watch video via browser; locate “network” and search for “m3u8”
By this way, you are able to download most videos as long as you are able to watch them in your browser.

While sometimes, there is inhibition for you to complete full streaming, then you need to merge the “.ts” files by yourself.
Way 1
copy /b *.*    output.mp4
Way 2
DIR *.*  /B >filelist.txt
Open filelist.txt using Excel; insert column ‘file’ and ‘ before the column of file name and one column of ‘ after the column of file name; save as txt. (To make command of e.g. file ‘1.ts’, file ‘2.ts’…)
ffmpeg -f concat -safe 0 -i filelist.txt -c copy output.mp4

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2020诺贝尔化学奖之际

本来也是打算英文写的,但是考虑到后面这一大串都是英文,就改用中文写吧。
这个时候看到这个新闻,多少总还是会觉得wow!,虽然其实也和你没多大关系。很多时候科学家的故事,如果都能让你也觉得很值得思考,那么很可能你也是一个科学家,或者至少是热爱科学的。
上一次觉得诺贝尔化学奖有点联系的时候,还在2000年:The Nobel Prize in Chemistry 2000 was awarded jointly to Alan J. Heeger, Alan G. MacDiarmid and Hideki Shirakawa “for the discovery and development of conductive polymers.”
link:The Nobel Prize in Chemistry 2000 从发现到开始商业化,经过了约30年。
我相信很多人做出诺奖级别的贡献的时候,他们的目标自始至终可能都不是诺奖,而是对科学本身的热爱和对未知领域的好奇心。
Emmanuelle Charpentier在众多的发言场合,提到最多的就是curiosity。
I realized that being a research scientist would fit the many aspects of my personality — my curiosity, intellectual drive for knowledge, enjoyment of communicating knowledge to others and working as a team, and my desire to turn complex scientific discoveries into practical applications that would help society. I was excited about being a scientist.

若有时间,我会再写一篇。

Emmanuelle Charpentier Receives Aachen Engineering Award
07/09/2018

People on a stage looking at the camera

Copyright: Andreas Schmitter
Link: Emmanuelle Charpentier Receives Aachen Engineering Award

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reCAPTCHA or Captcha

ReCAPTCHA

  • abstract:
    • reCAPTCHA is a user-dialogue system originally developed by Luis von Ahn, Ben Maurer, Colin McMillen, David Abraham and Manuel Blum at Carnegie Mellon University’s main Pittsburgh campus, and acquired by Google in September 2009. Like the CAPTCHA interface, reCAPTCHA asks users to enter words seen in distorted text images onscreen.

对于垃圾评论,重点还是要多加防范。WordPress用户可以通过多种方式来屏蔽垃圾评论:可以要求用户注册后才能进行评论,也可以安装验证码(比如WP-reCaptcha)插件等。

使用WordPress自带的垃圾评论插件:Akismet
1、在WordPress后台》插件下面有一个默认的Akismet插件。
2、启用插件然后注册,选择个人免费版,获取API秘钥,并进行简单的设置就可以了。

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wordpress插件兼容性及旧版本下载和恢复

很多软件看到有新版本时都忍不住去升级,刚才升级了PDF Embedder到4.1版本,竟然编辑器不能正常使用了,wordpress plugin页面却没有恢复到旧版本的按钮,这可怎么办?好在寻找了一下,发现wordpress提供了插件网页旧版本下载,于是下载了4.0版本,但是怎么安装呢?幸好网页上说明了:

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wordpress不支持rar的问题及其没有解决方案

随着内容的丰富,遇到的问题也需要一个接一个解决,rar的问题始终没有解决。好几种方案都不怎么靠谱。插件的办法拓展了支持的文件类型,但是rar始终不支持,好像是因为某种潜在的安全漏洞。
替代办法是采用zip格式。有这个替代办法,也懒了,不再寻找新的办法。毕竟代码改来改去,最后都可能影响其它位置。体会到大一点的程序维护的困难,尤其这个代码不都是你自己写的时候。

10.雪花神剑——挑衅-初稿
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