from gevent import monkey
import gevent
import socket
import sys
import remonkey.patch_all()class WSGIServer(object):"""定义一个WSGI服务器的类"""def __init__(self, port, documents_root):# 1. 创建套接字self.server_socket = socket.socket(socket.AF_INET, socket.SOCK_STREAM)# 2. 绑定本地信息self.server_socket.setsockopt(socket.SOL_SOCKET, socket.SO_REUSEADDR, 1)self.server_socket.bind(("", port))# 3. 变为监听套接字self.server_socket.listen(128)self.documents_root = documents_rootdef run_forever(self):"""运行服务器"""# 等待对方链接while True:new_socket, new_addr = self.server_socket.accept()gevent.spawn(self.deal_with_request, new_socket)  # 创建一个协程准备运行它def deal_with_request(self, client_socket):"""为这个浏览器服务器"""while True:# 接收数据request = client_socket.recv(1024).decode('utf-8')# print(gevent.getcurrent())# print(request)# 当浏览器接收完数据后，会自动调用close进行关闭，因此当其关闭时，web也要关闭这个套接字if not request:new_socket.close()breakrequest_lines = request.splitlines()for i, line in enumerate(request_lines):print(i, line)# 提取请求的文件(index.html)# GET /a/b/c/d/e/index.html HTTP/1.1ret = re.match(r"([^/]*)([^ ]+)", request_lines[0])if ret:print("正则提取数据:", ret.group(1))print("正则提取数据:", ret.group(2))file_name = ret.group(2)if file_name == "/":file_name = "/index.html"file_path_name = self.documents_root + file_nametry:f = open(file_path_name, "rb")except:# 如果不能打开这个文件，那么意味着没有这个资源，没有资源 那么也得需要告诉浏览器 一些数据才行# 404response_body = "没有你需要的文件......".encode("utf-8")response_headers = "HTTP/1.1 404 not found\r\n"response_headers += "Content-Type:text/html;charset=utf-8\r\n"response_headers += "Content-Length:%d\r\n" % len(response_body)response_headers += "\r\n"send_data = response_headers.encode("utf-8") + response_bodyclient_socket.send(send_data)else:content = f.read()f.close()# 响应的body信息response_body = content# 响应头信息response_headers = "HTTP/1.1 200 OK\r\n"response_headers += "Content-Type:text/html;charset=utf-8\r\n"response_headers += "Content-Length:%d\r\n" % len(response_body)response_headers += "\r\n"send_data = response_headers.encode("utf-8") + response_bodyclient_socket.send(send_data)# 设置服务器服务静态资源时的路径
DOCUMENTS_ROOT = "./html"def main():"""控制web服务器整体"""# python3 xxxx.py 7890if len(sys.argv) == 2:port = sys.argv[1]if port.isdigit():port = int(port)else:print("运行方式如: python3 xxx.py 7890")returnprint("http服务器使用的port:%s" % port)http_server = WSGIServer(port, DOCUMENTS_ROOT")http_server.run_forever()if __name__ == "__main__":main()