human
Solve the following python programming problem given the following code:
@ tornado.web.asynchronous 
def connect(self) : 
    (host, port) = self.request.uri.split (':') 
    client = read_from_client.request.connection.stream 
    def read_from_client(data) : 
        upstream.write (data) 
def read_from_upstream(data) : 
        client.write (data) 
def client_close(data = None) : 
        if upstream.closed () : 
            return 
if data : 
            upstream.write (data) 
upstream.close () 
def upstream_close(data = None) : 
        if client.closed () : 
            return 
if data : 
            client.write (data) 
client.close () 
def start_tunnel() : 
        client.read_until_close (client_close, read_from_client) 
        upstream.read_until_close (upstream_close, read_from_upstream) 
        client.write (b'HTTP/1.0 200 Connection established\r
\r
') 
s = socket.socket (socket.AF_INET, socket.SOCK_STREAM, 0) 
    upstream = tornado.iostream.IOStream (s) 
    upstream.connect ((host, int (port)), start_tunnel) 

    
    

    Fix the buggy line: client = read_from_client.request.connection.stream
assistant
#Here is Python code to fix the buggy line: client = read_from_client.

client = self.request.connection.stream