WSGI全称是Web Server Gateway Interface(Web服务器网关接口)。这是Python中定义的一个网关协议,规定了Web Server如何跟应用程序交互。这个协议最主要的目的就是保证在Python中所有Web Server程序或者说Gateway程序,能够通过统一的协议跟Web框架或者说Web应用进行交互。
简单的Web Server
import socket
EOL1=b'\n\n'
EOL2=b'\n\n'
body='''Hello,world!<h1>from wuyou</h1>'''
response_params=[
'HTTP/1.0 200 OK',
'Date:Sun,27 may 2018 01:01:01 GMT',
'Content-Type:text/plain;charset=utf-8',
'Content-Length:{}\r\n'.format(len(body.encode())),
body,
]
response='\r\n'.join(response_params)
def handle_connection(conn,addr):
request=b""
while EOL1 not in request and EOL2 not in request:
request+=conn.recv(1024)
print(request)
conn.send(response.encode()) #response转为bytes后传输
conn.close()
def main():
#socket.AF_INET用于服务器与服务器之间的网络通信
#socket.SOCK_STREAM用于基于TCP的流式socket通信
serversocket=socket.socket(socket.AF_INET,socket.SOCK_STREAM)
#设置端口可用,保证我们每次按ctrl+C组合键之后,快速重启
serversocket.setsockopt(socket.SOL_SOCKET,socket.SO_REUSEADDR,1)
serversocket.bind(('127.0.0.1',8000)) #设置backlog-socket连接最大排队数量
serversocket.listen(5)
print('http://127.0.0.1:8000')
try:
while True:
conn,address=serversocket.accept()
handle_connection(conn,address)
finally:
serversocket.close()
if __name__ == '__main__':
main()