套接字错误[Errno 9]错误的文件描述符HTTP服务器

Question

I want to write code for a multi clients socket program, but I get Bad file descriptor, and I don't know how to fix it. this is my first code in python I'm new in python.

my code:

import socket
import os.path
from thread import *

host = '0.0.0.0'
port = 11111

#server_socket = socket.socket()
server_socket = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
server_socket.bind((host, port))
server_socket.listen(1)

def clientthread(client_socket):
    while True:
        rqst = client_socket.recv(1024)
        if ("GET" not in rqst) or (rqst == ""):
            client_socket.send("HTTP/1.1 500 Internal Server Error\r\n")

        FileName = rqst.split(" ")[1]
        print "Client (%s, %s) connected" % client_address
        print rqst

        if os.path.isfile(os.getcwd() + FileName) == True:
            f = open(os.getcwd() + FileName )
            g = f.read()
            response = 'HTTP/1.1 200 OK\r\n' + 'Content-Length: ' + str(len(g)) + '\r\n''' + g  
            client_socket.send(response)
            print response
        elif FileName == "/":
            f = open(os.getcwd() + "/index.html")
            g = f.read()
            response = 'HTTP/1.1 200 OK\r\n' + 'Content-Length: ' + str(len(g)) + '\r\n''' + g  
            client_socket.send(response)
            print response    
        elif FileName == "/for.html":
            client_socket.send("HTTP/1.1 403 Forbidden\r\n\r\n")
            print "HTTP/1.1 403 Forbidden\r\n\r\n"
        elif FileName == "/move.html":
            f = open(os.getcwd() + "/index2.html")
            g = f.read()
            client_socket.send(g)
            client_socket.send('HTTP/1.1 302 Moved Temporarily\r\n')
            print 'moved''http/1.1 302 Moved Temporarily\r\n'      
        elif "calculate-next?num=" in FileName:
            num = int(FileName[FileName.find("=")+1:])+1
            client_socket.send(str(num))
            print str(num)
        elif "calculate-area?" in FileName:
            height = float(FileName[FileName.find("height")+7:FileName.find("&")])
            width = float(FileName[FileName.find("width")+6:])
            S = float((height*width)/2)
            client_socket.send(str(S))
            print str(S)
        else:
            response = "HTTP/1.1 404 Not Found\r\n"
            client_socket.send(response)
            print response
        client_socket.close()   
    client_socket.close()
    server_socket.close()

while True:
    (client_socket, client_address) = server_socket.accept()
    start_new_thread(clientthread ,(client_socket,))

my error:

Unhandled exception in thread started by Traceback (most recent call last): File "C:\\Users\\Eden\\Desktop\\HTTPserver\\server2.py", line 15, in clientthread rqst = client_socket.recv(1024) File "C:\\Python27\\lib\\socket.py", line 174, in _dummy raise error(EBADF, 'Bad file descriptor') socket.error: [Errno 9] Bad file descriptor

What should I do?

Answer 1

You have a duplicate client_socket.close() line indented in your inner while loop. This means that you try to recieve data from the closed socket, which raises that error. Also, why are you closing the server_socket in the clientthread method.