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python 套接字和 epoll

转载 作者:行者123 更新时间:2023-12-01 03:58:12 30 4
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我使用python的socket和epoll来制作一个Web服务器。我的操作系统是Linux CentOS 6,我的python版本是python 2.7.8。我的源代码是:

# -*-coding:utf-8-*-

import socket
import select
import time

EOL1 = b'\n\n'
EOL2 = b'\n\r\n'
response = b'HTTP/1.0 200 OK\r\nDate: Mon, 1 Jan 1996 01:01:01 GMT\r\n'
response += b'Content-Type: text/plain\r\nContent-Length: 13\r\n\r\n'
response += b'<html><head><title>title</title></head><body><p>Hello, world!</p></body></html>'

serversocket = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
serversocket.setsockopt(socket.SOL_SOCKET, socket.SO_REUSEADDR, 1)
serversocket.bind(('0.0.0.0', 8080))
serversocket.listen(1) # the number of client that connect to server
serversocket.setblocking(0) # set 0 not block other block
serversocket.setsockopt(socket.IPPROTO_TCP, socket.TCP_NODELAY, 1)

epoll = select.epoll()
epoll.register(serversocket.fileno(), select.EPOLLIN)

try:
connections = {}
requests = {}
responses = {}
while True:
events = epoll.poll(1)
for fileno, event in events:
if fileno == serversocket.fileno(): # if request come
connection, address = serversocket.accept() # waiting income connection
connection.setblocking(0) # none block
epoll.register(connection.fileno(), select.EPOLLIN) # register socket read event to epoll
connections[connection.fileno()] = connection # add connection to connections dict
requests[connection.fileno()] = b''
responses[connection.fileno()] = response # write data to responses dict
elif event & select.EPOLLIN: # when data in os's read buffer area
requests[fileno] += connections[fileno].recv(1024) # read data from connections
if EOL1 in requests[fileno] or EOL2 in requests[fileno]: # if http message
print('-' * 40 + '\n' + requests[fileno].decode()[:-2])
responses[fileno] += str(time.time())
epoll.modify(fileno, select.EPOLLOUT) # change file number to epoll out mode
elif event & select.EPOLLOUT: # if out mode
byteswritten = connections[fileno].send(responses[fileno]) # write data to os's write buffer
responses[fileno] = responses[fileno][byteswritten:] # get http response message
if len(responses[fileno]) == 0: # if file sent
epoll.modify(fileno, 0) # change file number to hup mode
connections[fileno].shutdown(socket.SHUT_RDWR) # set socket read and write mode shutdown
elif event & select.EPOLLHUP: # if message sent and file number in epoll is hup
epoll.unregister(fileno) # remove file number from epoll
connections[fileno].close() # close connection
del connections[fileno] # delete connection from connections dict
finally:
epoll.unregister(serversocket.fileno())
epoll.close()
serversocket.close()

但是当我打开网络浏览器并访问“http://localhost:8080/”时,我得到了一些像这样的数据<html><head>< ,这不是完整的数据,它只是我数据的一部分。我的项目出了什么问题。查看更多信息请查看这张图片。 enter image description here

最佳答案

您的代码中包含“Content-Length: 13”,因此仅显示前 13 个字符!

关于python 套接字和 epoll,我们在Stack Overflow上找到一个类似的问题: https://stackoverflow.com/questions/37063954/

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