原创

🤔 如果我们想启动一个http server

1. 使用python我们可以怎么实现
内置的wsgiref、eventlet、httpd、nginx

📝实现http server

wsgiref

# coding:utf-8
from wsgiref.simple_server import make_server
import time


def my_handler(environ, start_response):
    request_method = environ['REQUEST_METHOD']
    if request_method == 'GET':
        if environ['PATH_INFO'] == "/":
            # 'QUERY_STRING': 'ha=1&oo=m'
            params = environ['QUERY_STRING']
            if params:
                qurrys = params.split('&')
                qs = (q.split("=") for q in qurrys)
                print(list(qs))
            token = "" if 'HTTP_X_AUTH_TOKEN' not in environ else environ['HTTP_X_AUTH_TOKEN']
            # 第一个参数必须是至少两个用空格分开的内容
            # 第二个参数是headers
            start_response("202 OK", [("content-type","text/json")])
            time.sleep(100)
            return "Hello World %s" % token
        elif environ['PATH_INFO'] == "/hi":
            start_response("202 OK", [("content-type","text/plain")])
            return "Hello 00"
        else:
            start_response("404 NOT FOUND", [("content-type","text/plain")])
            return "404 NOT FOUND"
    elif request_method == "POST":
        start_response("202 OK", [("content-type","text/plain")])
        return "Hello POST"
    else:
        start_response("404 NOT FOUND", [("content-type","text/plain")])
        return "404 NOT FOUND"


server = make_server("0.0.0.0", 8888, my_handler)
# 单任务的，一个请求处理完才会处理另外一个请求
server.serve_forever()

eventlet

import eventlet
eventlet.monkeypatch()

from eventlet import wsgi


def hello_world(env, start_response):
    print(env)
    start_response('200 OK', [('Content-Type', 'text/plain')])
    return ['Hello, World!\r\n']

def run_service_world(listen_fd):
    try:
				 # 内部使用绿色线程池来处理请求，一个请求遇到io操作时，
        # 另外一个请求到来，会处理该请求，不会被阻塞
        wsgi.server(listen_fd, site=hello_world)
    except Exception as e:
        print("Error starting thread.")
        raise

listen_fd1 = eventlet.listen(("", 8090))
run_service_world(listen_fd1)

🤗总结归纳

参考文章