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Python不发送所有数据,仅4kb_Python_Sockets_Web_Server - Fatal编程技术网

Python不发送所有数据,仅4kb

Python不发送所有数据,仅4kb,python,sockets,web,server,Python,Sockets,Web,Server,我试图创建一个Python web服务器,但是它似乎无法发送任何大于4KB的文件。如果文件的大小超过4KB,它只会将文本/图像的末尾截断超过4KB。从其他来源(AmazonS3/Twitter)嵌入的任何东西都可以正常工作 这是服务器代码。现在有点乱,但我专注于让它发挥作用。之后,我将为代码添加更多安全性 ''' Simple socket server using threads ''' import socket import sys import time import os f

我试图创建一个Python web服务器,但是它似乎无法发送任何大于4KB的文件。如果文件的大小超过4KB,它只会将文本/图像的末尾截断超过4KB。从其他来源(AmazonS3/Twitter)嵌入的任何东西都可以正常工作

这是服务器代码。现在有点乱,但我专注于让它发挥作用。之后,我将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
感谢您抽出时间。

因此,感谢您用户“您”我们发现了问题。我有这个密码:

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')
而不是此代码:

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')

问题是我发送每个文件的index.html文件大小,所以Chrome和其他浏览器只是删除了额外的数据。碰巧index.html是4KB,所以我认为这是一个数据包限制或该区域的某个地方。

可能是传输编码=“chunked”会有帮助。我尝试更改传输编码,但现在Chrome甚至不会显示任何内容。它声称该网页在控制台中没有任何内容时不可用。作为参考,新字符串是
conn.sendall('HTTP/1.1 200 OK\n服务器:TestWebServ/0.0.1\n传输编码:chunked\n连接:close\n内容类型:'+contentType+'\n\n')
我选中了,它试图将内容发送到Chrome,但由于某种原因Chrome看不到内容。如果我继续使用内容长度系统,它将发送文件,但只发送前4KB。如果我尝试一次发送整个文件,它仍然只接收Chrome中的前4KB。我认为问题在于您硬编码了-os.path.getsize('index.html'),更改为dataSplit[1][1:]与您原来的代码一起工作。谢谢。这解决了我的问题。我不敢相信我犯了那个错误,却忽略了它。