Python proxy - Need help to send HTTP header to the browser

Question

I'm making a proxy for my project and I'm trying to send to the browser (Firefox) an HTTP header to continue the "Conversation" between me(Proxy server) and the browser. The issue is: when I'm refreshing any page, the page Keeping loading. I use socket and select for the proxy:

import socket, select

#Sending a message for the waiting list
def send_Waiting_Messages(wlist):
    for msg in messages_to_send:
        clientSocket, data = msg
        if clientSocket in wlist:
            clientSocket.send('HTTP/1.1 200 OK\r\nContent-Type: text/html\r\n\r\n')
            messages_to_send.remove(msg)

serverSocket = socket.socket()
serverSocket.bind(('0.0.0.0',8080))
serverSocket.listen(10)
open_client_sockets = []
messages_to_send = []

while True:
    rlist, wlist, xlist = select.select([serverSocket] + open_client_sockets, open_client_sockets, [])
    for currentSocket in rlist:
        if currentSocket is serverSocket:
            newSocket, addr = serverSocket.accept()
            open_client_sockets.append(newSocket)
        else:
            data = currentSocket.recv(1024)
            if data == "":
                open_client_sockets.remove(currentSocket)
                print 'Conn is closed'
            else:
                print data
                messages_to_send.append((currentSocket, 'Hello, ' + data))
    send_Waiting_Messages(wlist)

These lines:

clientSocket.send('HTTP/1.1 200 OK\r\n')
clientSocket.send('Content-Type: text/html\r\n\r\n')

are for sending the header.

Thanks for helpers!!

I want that the page will response me again and it doesn't work because of this issue — iYonatan
– iYonatan, Commented Mar 19, 2015 at 15:08

Guy Goldenberg · Accepted Answer · 2015-03-20 12:15:27Z

1

notice that every the send_Waiting_Messages function is sending the same response to all of your connected clients. I reccomend to replace it with the basic send function when the socket is in the wlist.

This will probably work

import socket, select
serverSocket = socket.socket()
serverSocket.bind(('0.0.0.0',8080))
serverSocket.listen(10)
open_client_sockets = []

while True:
    rlist, wlist, xlist = select.select([serverSocket] + open_client_sockets, open_client_sockets, [])
    for currentSocket in rlist:
        if currentSocket is serverSocket:
            newSocket, addr = serverSocket.accept()
            open_client_sockets.append(newSocket)
        else:
            data = currentSocket.recv(2048)
            if data == "":
                open_client_sockets.remove(currentSocket)
                print 'Conn is closed'
            else:
                print data
                content_to_send = "The content that you want to send"
                currentSocket.send("HTTP/1.1 200 OK\r\nContent-Type: text/html\r\nContent-Length:"+str(len(content_to_send))+"\r\n\r\n"+content_to_send)

edited Mar 20, 2015 at 12:15

answered Mar 20, 2015 at 11:56

Guy Goldenberg

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1 Comment

Guy Goldenberg Over a year ago

Try to define content_to_send in the beginning of the code.

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