Lab1.md

Web Server Lab

参考jzplp/Computer-Network-A-Top-Down-Approach-Answer: 计算机网络-自顶向下方法 习题/编程/实验答案

注意需要两次\r\n,因为没有首部行，直接到本体体了。

#import socket module
from socket import *
import sys # In order to terminate the program
serverSocket = socket(AF_INET, SOCK_STREAM)
#Prepare a sever socket
#Fill in start
print(gethostbyname(gethostname()))
serverSocket.bind(('',8888))
serverSocket.listen(1)
print("The server is ready to receive")
#Fill in end
while True:
 #Establish the connection
 print('Ready to serve...')
 connectionSocket, addr =  serverSocket.accept()#Fill in start  #Fill in end 
 try:
     message = connectionSocket.recv(1024)#Fill in start #Fill in end 
     filename = message.split()[1] 
     f = open(filename[1:]) 
     outputdata = f.read() #Fill in start #Fill in end 
     #Send one HTTP header line into socket
     #Fill in start
     f.close()
     outputdata = 'HTTP/1.1 200 OK\r\n\r\n' + outputdata
     #Fill in end 
     #Send the content of the requested file to the client
     for i in range(0, len(outputdata)): 
         connectionSocket.send(outputdata[i].encode())
     connectionSocket.send("\r\n".encode())
     
     connectionSocket.close()
 except IOError:
     #Send response message for file not found
     #Fill in start 
     outputdata = 'HTTP/1.1 404 Not Found\r\n\r\n'
     connectionSocket.send(outputdata.encode());
     #Fill in end
     #Close client socket
     connectionSocket.close();
     #Fill in start
     #Fill in end 
serverSocket.close()
sys.exit()#Terminate the program after sending the corresponding data 

局域网内可使用ip+端口+地址访问。