The world's largest spam Botnet is promoting the cryptocurrency Swisscoin
Necurs is currently the world's largest spam botnet, and researchers recently found that Necurs is promoting a method called Swisscoin by sending spam).
The researchers said that attackers will send large-scale spam emails with the topic of Recommendation shares to stimulate the interest of target users. This type of spam pattern used by attackers has been converted into "pum
server.py from Import Make_server from Import applicationhttpd=make_server (", 8000, application)print' Serving Http on port 8000'httpd.serve_forever ()ex.pydefApplication (Environ,start_response): Start_response ('OK',[('Content-type','text/html')])body='' forKey,valueinchEnviron.iteritems (): Body="'. join ([Body,''%(Key,value)]) Else: Body="'. join ([Body,'']) return[Body]Two file modes in the same directory, Python server.py bootBrowser A
Variable char **environ is defined in Unistd.h, to represent all current environment variables, generally access to specific environment variables can be getenv, but to traverse all environment variables is to use Environ.That is, the extern char **environ is declared globally within the program, but it is also possible to set the 3rd parameter of the main function, but it is not recommended because the mai
we use Python to focus on generating HTML documents. Because we don't want to be exposed to TCP connections, HTTP RAW requests, and response formats, we need a unified interface that lets us focus on writing Web services in Python.
This interface is the Wsgi:web Server Gateway Interface.
Wsgi interface definition is very simple, it only requires the web developer to implement a function, you can respond to HTTP requests. Let's look at one of the simplest web versions of "Hello, web!" :
def appl
main.cpp// environ//// Created by Apple on 14-11-6.// Copyright (c) 2014 CC. All rights reserved.//#include environment variable parameters can be output on Unix via Environ variableenvironment variable Environ in Unix, C + +
This chapter of learning makes me understandProcess typical storage spaceHow environment variables and command-line arguments are passed to the process5 Forms of normal termination of a process and 3 forms of abnormal terminationHow to dynamically allocate additional storage space to a processSETJMP and LONGJMP functions and their interaction with the stack, and the state effect on the Auto register volatile static global 5 types of variablesThis is a non-local transfer--spanning the stack frame
#include int main (int argc,char *argv[],char **envptr) { int i=0; for (i=0; envptr[i]!=null; i++) printf ("%s\n", Envptr[i]); return 0;}The main function is the entry function of the program, int main (int argc,char *argv[]);ARGC is the
This is an introductory article on cryptocurrency, a supplement to the Getting Started Guide section of the Nodejs development crypto currency, mainly for small partners who have not been in touch with Bitcoin or cryptocurrency, and the next content will be related to cryptocurrency.Objective"Cryptocurrency is Money" sounds "idiotic". Think of the meaning behind,
This article is about the last article in the Crypto Currency primer article. Cryptocurrency introductory article mainly for developers, from the theoretical level to describe the concept of crypto-currency architecture, a total of 3. The title of this article in the real writing when the change, did not continue the last hint of "mechanism, the root of the future of society." When writing this article, Bitcoin experienced a crazy rise, currently 3876
This article describes in detail how to simulate the Django framework in python and understand the basic functions required by a web framework. For more information, see
I. python web server implementation
Web development requires a web server first. For example, apache, but it is best to have a simple and convenient development server in the development stage,It is easy to restart for debugging. After the development and debugging are completed, the code will be deployed to a mature, stable,
Python simulates the Django framework instance and pythondjango framework
I. python web server implementation
Web development requires a web server first. For example, apache, but it is best to have a simple and convenient development server in the development stage,It is easy to restart for debugging. After the development and debugging are completed, the code will be deployed to a mature, stable, and efficient web server.
#-*-Coding: UTF-8-*-from wsgiref import simple_server # define a simple
coupling between Web servers and frameworks through WSGI is shown in:
WSGI Server adaptation
The specific explanation is as follows:
An application (network framework) provides a callable object named application (WSGI does not specify how to implement this object ). After receiving a request from an HTTP client, the server calls the callable object application. when calling the application, it passes a dictionary named environ as the parameter and
between the Web server and Web applications. On the one hand, it obtains the original HTTP data from the Web server, processes it in a unified format, and then delivers it to the Web application, on the other hand, the business logic is processed from the application/framework side, and the response content is generated and handed over to the server.
Detailed process of coupling between Web servers and frameworks through WSGI is shown in:
WSGI Server adaptation
The specific explanation is as f
coupling between the server and the application, and it greatly increases the flexibility of the design from another angle.WSGI Implementation SummaryIn the previous section, a brief introduction to WSGI was made. Here, from the application, server, middleware three angles to the WSGI a little deeper, so that we have a more specific impression of it.1) Application EndWSGI requires that the application side must provide an entity that can be called (PEP 0333 uses object, and the document specifi
-SideWSGI specifies that each Python program (application) must be a callable object (a __call__ method or class that implements the function), accepts two parameters environ (WSGI environment information), and (the function that start_response starts responding to the request), and returns Iterable. A few notes:
environand start_response provided by HTTP server and implemented
environA variable is a dictionary that contains information a
follows:
The application (Network framework) provides a callable object named application (the WSGI protocol does not specify how to implement this object). Each time the server receives a request from the HTTP client, it invokes the callable object application, passing a dictionary called Environ as an argument, and a callable object named Start_response. The framework/application generates an HTTP status code and an HTTP response header, which is
first, Python implements the Web server
Web development must first have a Web server. such as Apache, but in the development phase it is best to have a simple and convenient development server,Easy to restart for debugging, and so on after the development of debugging, then deploy the code to mature and stable and efficient Web server.
#-*-Coding:utf-8-*-from wsgiref Import simple_server# define a simple Web application that outputs Hello World and environment Variables Def hello_app (
the application/framework side, and the response content is delivered to the server.
The detailed process of coupling the Web server and the framework through WSGI is as follows:
WSGI Server Adaptation
The specific explanations are as follows:
The application (Network framework) provides a callable object named application (the WSGI protocol does not specify how to implement this object). Each time the server receives a request from an HTTP client, it invokes the callable object application, p
objects that can be called:
a function
A class that must implement the __call__ () method
An instance of a class
This object receives two parametersFrom the source, we can see that these two parameters are environ, start_response. Take the callable object as an example of a class:
Class Application:def __call__ (self, Environ, start_response):Pass
A callable object needs to return a value that can be itera
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At the bottom of django,flask,bottle and all other Python web frameworks is the Web Server Gateway Interface, referred to as WSGI. Wsgi for Python is like Servlets to Java-A common specification for Web servers that allows different Web servers and application frameworks to interact based on common A
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