概述
本文通过socket编程实现TCP服务器，接收浏览器请求，观察浏览器发来的请求数据
import socket
import os.path
import threading
LEN=1024*64
HOME_PAGE='index.html'
HTML_404='404.html'
WEB_ROOT=r'F:\网页模板\通用后台管理页面'
def main(port=80):
#默认就是ipv4,tcp
server=socket.socket()
server.bind(('0.0.0.0',port))
# 与操作系统有很大关系，需要操作系统支持，有时设置了，也没用
server.listen(5)
print('启动成功！')
while True:
# client就是socket对象，表示该客户的
client,addr=server.accept()
threading.Thread(target=handle,args=(client,addr)).start()
def handle(client,addr):
# 读取请求头信息
fp=client.makefile('r',encoding='utf-8')
line=fp.readline(LEN)
if line=='':
return
# 读取第一行指令
method,url,version=line.split(' ')
print('method:',method)
print('url:',url)
print('version:',version)
headers=readheaders(fp)
print(headers)
# 发送数据
if url=='/':
url=HOME_PAGE
# 读文件并发送，采用二进制发送，读一部分发送一部分
if url[0]=='/':
url=url[1:]
filepath=os.path.join(WEB_ROOT,url)
sendfile(client,filepath)
def readheaders(fp):
# 读取并封装后面的头信息
headers={}
while True:
line=fp.readline()
# print(line,end='')
if line=='\n':
break
pos=line.index(':')
headers[line[:pos]]=line[pos+2:-1]
return headers
# 发送文件
def sendfile(client,filepath):
if os.path.exists(filepath):
# 发送响应头 response headers
client.send(b'HTTP/1.1 200 OK\r\n')
else:
# 发送响应头 response headers
client.send(b'HTTP/1.1 404 NOT FOUND\r\n')
filepath=os.path.join(WEB_ROOT,HTML_404)
# 截取访问资源的后缀，并转换小写
suffix=filepath[filepath.rindex('.')+1:].lower()
content_type=get_content_type(suffix)
client.send(content_type)
filesize=os.path.getsize(filepath)
client.send(('Content-Length: %s\r\n'%filesize).encode('utf-8'))
client.send(b'Server: shanghaibaolei\r\n')
client.send(b'\r\n')
with open(filepath,'rb') as f:
data=f.read(LEN)
client.sendall(data)
client.close()
# 根据访问资源的后缀，获取content-type
def get_content_type(suffix):
ret=None
if suffix=='html':
ret=b'Content-Type: text/html;charset=UTF-8\r\n'
elif suffix=='png':
ret=b'Content-Type: image/png\r\n'
elif suffix=='gif':
ret=b'Content-Type: image/gif\r\n'
elif suffix in ['jpg','jpeg']:
ret=b'Content-Type: image/jpeg\r\n'
elif suffix =='css':
ret=b'Content-Type: text/css\r\n'
elif suffix =='js':
ret=b'Content-Type: application/x-javascript\r\n'
return ret
if __name__ == "__main__":
main()