Question

我正在尝试创建一个Python Web服务器，但它似乎无法发送任何大于4KB的文件。如果文件大小超过4KB，则只会将文本/图像的末尾切断4KB。从其他来源（亚马逊S3 / Twitter）嵌入的任何东西都可以正常工作。

这是服务器代码。目前这有点乱，但我专注于让它发挥作用。之后我会为代码添加更多安全性。

'''
    Simple socket server using threads
'''

import socket
import sys
import time
import os
from thread import *

HOST = ''   # Symbolic name meaning all available interfaces
PORT = 80 # Arbitrary non-privileged port

s = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
print 'Socket created'

#Bind socket to local host and port
try:
    s.bind((HOST, PORT))
except socket.error as msg:
    print 'Bind failed. Error Code : ' + str(msg[0]) + ' Message ' + msg[1]
    sys.exit()

print 'Socket bind complete'

#Start listening on socket
s.listen(10)
print 'Socket now listening'

#Function for handling connections. This will be used to create threads
def clientthread(conn):
    #Sending message to connected client

    #infinite loop so that function do not terminate and thread do not end.
    while True:

        #Receiving from client
        data = conn.recv(4096)
        print data
        dataSplit = data.split(' ')
        print dataSplit

        contentType = "text/html"

        if(dataSplit[1].endswith(".html")):
            print "HTML FILE DETECTED"
            contentType = "text/html"
        elif(dataSplit[1].endswith(".png")):
            print "PNG FILE DETECTED"
            contentType = "image/png"
        elif(dataSplit[1].endswith(".css")):
            print "CSS FILE DETECTED"
            contentType = "text/css"
        else:
            print "NO MIMETYPE DEFINED"

        conn.sendall('HTTP/1.1 200 OK\nServer: TestWebServ/0.0.1\nContent-Length: ' + str(os.path.getsize('index.html')) + '\nConnection: close\nContent-Type:' + contentType + '\n\n')

        print '\n\n\n\n\n\n\n\n'

        with open(dataSplit[1][1:]) as f:
            fileText = f.read()
            n = 1000
            fileSplitToSend = [fileText[i:i+n] for i in range(0, len(fileText), n)]
            for lineToSend in fileSplitToSend:
                conn.sendall(lineToSend)
            break

        if not data:
            break

    #came out of loop
    conn.close()

#now keep talking with the client
while 1:
    #wait to accept a connection - blocking call
    conn, addr = s.accept()
    print 'Connected with ' + addr[0] + ':' + str(addr[1])

    #start new thread takes 1st argument as a function name to be run, second is the tuple of arguments to the function.
    start_new_thread(clientthread ,(conn,))

s.close

感谢您的时间。

Answer 1

所以，谢谢你的用户“你”我们发现了这个问题。我有这个代码：

conn.sendall('HTTP/1.1 200 OK\nServer: TestWebServ/0.0.1\nContent-Length: ' + str(os.path.getsize('index.html')) + '\nConnection: close\nContent-Type:' + contentType + '\n\n')

代替此代码：

conn.sendall('HTTP/1.1 200 OK\nServer: TestWebServ/0.0.1\nContent-Length: ' + str(os.path.getsize(dataSplit[1][1:])) + '\nConnection: close\nContent-Type:' + contentType + '\n\n')

问题在于我为每个文件发送了index.html的文件大小，因此Chrome和其他浏览器只删除了额外的数据。事实上，index.html是4KB所以我虽然这是一个数据包限制或该领域的东西。

Python不发送所有数据，只有4kb

1 个答案: