python Instance Method for Establishing web Service
- 2021-10-25 07:33:25
- OfStack
1. Description
(1) Sometimes we need a quick and easy way to set up an RPC service. Just let the program B call the program A.
(2) We don't need to know any technology about this point, but we only need something as simple as that. We can use a protocol (the corresponding Python library implements SimpleXMLRPCServer) to handle this.
2. Examples
from SimpleXMLRPCServer import SimpleXMLRPCServer
def file_reader(file_name):
with open(file_name, 'r') as f:
return f.read()
server = SimpleXMLRPCServer(('localhost', 8000))
server.register_introspection_functions()
server.register_function(file_reader)
server.serve_forever()
Instance extension:
Python implements a simple web server
import re
import socket
def service_cilent(new_socket):
request = new_socket.recv(1024).decode("utf-8")
# Python splitlines() By line ('\r', '\r\n', \n') Separate, return 1 A list containing rows as elements, if the parameter keepends For False Does not contain a newline character, if True The line break is preserved.
request_lines = request.splitlines()
print(request_lines)
file_name = ""
ret = re.match(r"[^/]+(/[^ ]*)", request_lines[0])
if ret:
file_name = ret.group(1)
if file_name == "/":
file_name = "index.html"
try:
f = open(file_name, "rb")
except:
response = "HTTP/1.1 404 NOT FOUND\r\n\r\n"
response += "------file not found-----"
new_socket.send(response.encode("utf-8"))
else:
# Open the file successfully read the file Then close the file pointer
html_content = f.read()
f.close()
# Data to be sent to the browser ---header
response = "HTTP/1.1 200 OK\r\n\r\n"
# Will response header Send to Browser
new_socket.send(response.encode("utf-8"))
# Will response body Send to Browser
new_socket.send(html_content)
# Close the socket
new_socket.close()
def main():
# Create a socket
tcp_server_socket = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
# tcp_server_socket.setsockopt(socket.SOL_SOCKET, socket.SO_REUSEADDR, 1)
# Binding
tcp_server_socket.bind(("", 7089))
# Listening socket
tcp_server_socket.listen(128)
while True:
new_socket, cilent_addr = tcp_server_socket.accept()
service_cilent(new_socket)
# Turn off listening sockets
tcp_server_socket.close()
if __name__ == '__main__':
main()