我在python3中编写了一个相当简单的http Web服务器. Web服务器需要很简单 – 只能从配置文件等基本读取.我只使用标准库,现在它工作得相当好.

这个项目只有一个要求,我无法自己实现 – 虚拟主机.我需要至少有两个虚拟主机,在配置文件中定义.问题是,我找不到如何在python中实现它们的方法.有没有人有任何指南,文章,也许一些简单的实现如何做到这一点？

我将不胜感激任何帮助.

解决方法:

对于简单的HTTP Web服务器,您可以从WSGI reference implementation开始：

wsgiref is a reference implementation of the WSGI specification that can be used to add WSGI support to a web server or framework. It provides utilities for manipulating WSGI environment variables and response headers, base classes for implementing WSGI servers, a demo HTTP server that serves WSGI applications,…

修改示例服务器以检查HTTP_HOST标头,这是一个简单的应用程序,它根据虚拟主机使用不同的文本进行响应. (扩展示例以使用配置文件留作练习).

import wsgiref
from wsgiref.simple_server import make_server

def my_app(environ,start_response):
    from io import StringIO
    stdout = StringIO()
    host = environ["HTTP_HOST"].split(":")[0]
    if host == "127.0.0.1":
        print("This is virtual host 1", file=stdout)
    elif host == "localhost":
        print("This is virtual host 2", file=stdout)
    else:
        print("Unknown virtual host", file=stdout)

    print("Hello world!", file=stdout)
    print(file=stdout)
    start_response(b"200 OK", [(b'Content-Type',b'text/plain; charset=utf-8')])
    return [stdout.getvalue().encode("utf-8")]

def test1():
    httpd = make_server('', 8000, my_app)
    print("Serving HTTP on port 8000...")

    # Respond to requests until process is killed
    httpd.serve_forever()